Source Audio EQ2 Programmable EQ User manual

SA270 EQ2 User Guide
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EQ2 Programmable EQ User Guide
Welcome
Thank you for purchasing the Source Audio EQ2 Programmable EQ! The EQ2 is the pedal for the
working musician; the tone-chaser. With 10 fully customizable bands of graphic or parametric
equalization, adjustable Q controls, full stereo capabilities, and complex routing options, this EQ
pedal will fit in virtually any setup. A modern update to its predecessor, the SA170 Programmable
EQ—which landed onto the boards of pros such as David Gilmour and John Mayer among many
others—the EQ2 boasts One Series hardware, full MIDI compatibility, and a real-time editing
interface for a DAW-like experience.
The EQ2 is our first pedal to support two-way mobile Neuro communication via the USB Mini port. It
also includes a Control Input port, and 5-pin MIDI DIN In and Out/Through ports for full MIDI
integration. The pedal features true stereo operation, including a Split Mode which allows you to
create a separate EQ curve for each output.
Coupled with the EQ2 is its own sound editor in the Neuro App and Desktop Editor, making custom
equalization easy and intuitive to create and share with other users. EQ2’s sound editor features
deep editing controls such as complex routing, channel volumes, and an optional noise gate and
limiter. Visit the Quick Start guide for basic operation or move on to the following sections for more
in-depth information about the EQ2. Enjoy!
—The Source Audio Team

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Contents
Welcome...................................................................................................................................................1
Contents ...................................................................................................................................................2
Feature Overview .....................................................................................................................................3
Connecting the Pedal ...............................................................................................................................4
Connections..............................................................................................................................................5
Basic Operation ........................................................................................................................................8
The Options Menu....................................................................................................................................9
Navigating the Options Menu ..................................................................................................................9
Controls ..................................................................................................................................................11
Common EQ Configurations...................................................................................................................13
Stereo Operation & Signal Routing ........................................................................................................15
Preset Storage and Recall.......................................................................................................................18
Additional Features ................................................................................................................................19
External Control......................................................................................................................................21
Neuro Desktop and Mobile Editors........................................................................................................22
The Neuro Desktop Editor......................................................................................................................22
The Neuro Mobile App —with New Direct MIDI-USB Support.............................................................30
Neuro Hub ..............................................................................................................................................31
MIDI ........................................................................................................................................................32
USB..........................................................................................................................................................32
Specifications..........................................................................................................................................33
Troubleshooting .....................................................................................................................................33
Frequently Asked Questions...................................................................................................................34
Rubber Feet ............................................................................................................................................35
Waste Disposal Notes.............................................................................................................................36
Warranty.................................................................................................................................................36
Version History .......................................................................................................................................38

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Feature Overview
Universal Bypass –Select between true bypass or analog buffered bypass. The EQ2 features high-
quality signal relays for true bypass and transparent buffers for analog bypass.
Flexible Stereo Routing –EQ2 is equally at home in a mono or stereo rig. The EQ2 Auto-Detects the
Inputs and Outputs that are being used and accordingly routes every delay and reverb effect engine
in Mono-to-Mono, Mono-to-Stereo, or Stereo-to-Stereo modes. Additional complex routing options
are available in the Neuro Editors.
Split Mode –By default, the same equalizer settings are applied to both Channel 1 and Channel 2.
Using Split mode allows for entirely independent settings of level, frequency, Q factor, etc. per signal
channel.
Compact Design –The extruded anodized aluminum housing, with its slim profile and small footprint,
is built for the rigors of the road.
Onboard Tuner –EQ2 comes with an onboard chromatic tuner that can be accessed in multiple
different ways using the pedal’s footswitch.
Presets –Save your favorite sounds with the touch of a button. Save total of 128 presets recallable
on the pedal itself or with an external MIDI controller.
Neuro Mobile App –The Neuro App is a free download for iOS and Android mobile devices. The App
offers a powerful extension to the basic pedal functionality with the options of preset saving and
publishing. Edit your presets and download them directly to your pedal, save them in your private
library, or publish and share them with the rest of the Neuro Community.
Two-Way Mobile Communication –For the first time, EQ2 will provide two-way Neuro
communication with your mobile device through the USB port on the pedal.
The Neuro Desktop Editor –Connect your EQ2 to the USB port on your Mac or Windows PC to create
and save advanced presets with the Neuro Desktop’s sleek editing interface. The Neuro software is a
free download for Mac or Windows based PCs. Two-way communication between the pedal and your
computer also allows the Desktop Editor to see the parameter settings of every preset stored in your
EQ2.
Neuro Hub Ready –The Source Audio Neuro Hub connects up to five compatible Source Audio
pedals and stores the settings of multi-pedal “Scenes.” Up to 128 Scenes can be saved and recalled
using the Neuro Hub alongside a standard MIDI controller. This option combines the power of a
multi-effects system with the ease and flexibility of a traditional pedal board.
Full MIDI Implementation –EQ2’s parameters can be accessed and controlled using MIDI messages
via its 5-pin DIN Input, a Neuro Hub connection, or USB port. Use MIDI messages to
engage/disengage the pedal, change presets, move parameters with a MIDI expression controller,
and more. Class-compliant USB-MIDI allows the EQ2 to work as a plug-and-play device with recording
software running on Mac and Windows.

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External Control –Easily configure the EQ2 to work with a variety of expression pedals and
footswitches for flexible external control options
Full Frequency Range –Since the human ear can detect between 20Hz and 20kHz (20,000Hz), each
of the 10 bands can be set anywhere between 20Hz and 20kHz for ultimate sonic customization.
Connecting the Pedal
Power
To power the unit, connect the included 9V DC negative-tipped power supply to the jack labeled DC
9V on the back panel.
Warning: Using a non-Source Audio supply, especially an unregulated supply, could damage the unit.
A power supply with insufficient current levels may also cause noise or other unpredictable behavior.
Please be very cautious when using 3rd-party power supplies and refer to the power supply
requirements in the Specifications section of this guide.

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Connections
Guitar/Audio Connections
Using standard ¼” mono (TS) cables, connect your guitar, bass, or other instrument to the INPUT 1
jack and your amp (or the next audio device in the signal chain) to the OUTPUT 1 jack. If you have a
second amp, connect it to OUTPUT 2.
When the power and audio connections have been made, EQ2 is ready for use.
Input Side Connections
INPUT 1
INPUT 1 is the primary input for guitar, bass, or other instruments. It can also accept line-level inputs
and will work in your amp’s effect loop. Connect it to your instrument or other audio source using a
mono (TS) 1/4” cable. Details about the appropriate signal levels are available in the Specifications
section.
INPUT 2
Use the secondary audio input for stereo sources or as the data connection to your mobile device
when using the Neuro App.
•INPUT 2 as an Audio Input: The tip contact on INPUT 2 acts as a secondary input for guitar, bass,
or other instruments. Connect your instrument (or the previous effect in the signal chain) using
a mono (TS) ¼” cable. The EQ2 will automatically configure itself for stereo audio input. Other
routing options are available using the Neuro App. For more information about stereo routing,
refer to the Stereo Operation section.
•INPUT 2 as a Neuro App Data Input: The ring contact on INPUT 2 acts as a data connection for the
Neuro Mobile App. The Neuro App sends data to the pedal using your mobile device’s
headphone jack. Connect it to your mobile device using the included stereo (TRS) 1/8” to 1/4”
cable. It can also accept daisy-chained Neuro data from another Neuro-compatible pedal in the
chain, provided that a TRS cable is used. The audio signal (if applicable) will be on the tip contact

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of the plug, and the Neuro App data will be on the ring contact. This allows audio and Neuro
data to flow on the same cable.
MIDI IN
This is a standard 5-pin DIN connector that accepts MIDI control messages from external devices,
including program change (PC) and continuous controller (CC) messages.
Output Side Connections
OUTPUT 1
This is the primary audio output. Connect it to your amplifier, recording interface, or the next device
in your effects signal chain using a mono (TS) ¼” cable.
OUTPUT 2
OUTPUT 2 can act either as an audio output or a daisy-chain data connection for the Neuro App.
•OUTPUT 2 as an Audio Output:The tip contact on OUTPUT 2 acts as the secondary audio output.
It carries an audio signal when the EQ2 is configured with a signal routing that uses stereo
outputs. Connect it to your amplifier, recording interface, or the next device in your effects
signal chain using a mono (TS) ¼” cable.
•OUTPUT 2 as a Neuro App Data Daisy-Chain Output: The ring contact on OUTPUT 2 acts as a data
connection for the Neuro App, passing data from the EQ2 to the next Source Audio effect in
your signal chain. You can daisy-chain the Neuro App data regardless of whether OUTPUT 2 is
configured to output audio or not. Connect OUTPUT 2 to the next device’s Neuro App Data input
(usually INPUT 2) using a stereo (TRS) 1/4” cable. The audio signal (if applicable) will be on the tip
contact of the plug, and the Neuro App data will be on the ring contact. This allows audio and
Neuro data to flow on the same cable.

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MIDI THRU
This is a standard 5-pin DIN connector that echoes MIDI messages from the MIDI IN jack and sends
them to other devices. The EQ2 does not generate any of its own MIDI data.
Power and Control Connections
DC 9V (Power)
Connect to the included 9 Volt DC power supply. If you would like to use a 3rd-party supply, the
power supply must be regulated at 9 Volts DC (direct current), able to source at least 180 mA
(milliamps) of current, and the plug should have a tip-negative, barrel-positive polarity.
USB
Connect to your computer or mobile device (Windows or Mac) to the EQ2’s USB port (denoted by
the icon) using a standard USB mini B cable. The EQ2 is a class compliant USB device, meaning that it
does not require any custom drivers. For more information about the EQ2’s USB capabilities, refer to
the USB Section of the User’s Guide.
CONTROL INPUT
The 3.5 mm CONTROL INPUT port connects to external control devices such as the Source Audio Tap
Tempo Switch, Source Audio Dual Expression Pedal, Neuro Hub, and Hot Hand Motion Controller. For
more information, refer to the Expression Pedal Input and Neuro Hub sections of the User’s Guide.

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Basic Operation
The EQ2 defaults to each band in the flat position, Q value of 1.0, and set to the standard grapgic-EQ
frequency values (the value written on the face of the pedal under each band) of 31, 62, 125, 250,
500, 1k, 2k, 4k, 8k, and 16k Hertz. No presets are saved from the factory, Split mode is set to OFF,
and Preset Extension mode is set to OFF. For more details on Preset Extension mode, see the Preset
Storage and Recall section.
Selecting a Band to Adjust
To select a frequency band, hold the ENCODER KNOB down while rotating it right or left. If Split mode
is enabled, continuing to rotate the encoder past the rightmost value will display the values for the
Channel 2 equalizer. The display will flash briefly to “CH 2” to indicate the change. You can navigate
back to Channel 1 equalizer by rotating the encoder past the leftmost value.
Adjusting a Band
To adjust a frequency band, rotate the ENCODER KNOB clockwise or counterclockwise without pushing
it down. Rotating the ENCODER KNOB clockwise will boost the frequency selected, while rotating it
counterclockwise will cut the frequency. Each “click” of the encoder will adjust the frequency band
up or down in 1dB increments. Note that finer adjustment increments of 0.2dB are available in the
Neuro Desktop and Mobile Apps.
Set to Flat
If you’ve made changes to your EQ that you would not like to keep, simply double tap the ENCODER
KNOB to “start over” and bring each band back to its default (flat) position. Note that this will NOT
reset adjustments made to the Frequency or Q Factor settings for any band.
Adjusting the Frequency of a Band
The human ear can detect frequencies from about 20Hz at the lowest, to about 20,000Hz (20kHz).
Since this is such a broad spectrum, and we only could fit 10 bands to work with on the pedal, we
armed each band with the ability to be set to anywhere between 20Hz and 20kHz.
Each of the 10 frequency bands is fully adjustable over the audio spectrum of 20Hz to 20,000Hz
(20kHz). Additionally, the filter frequencies used on Channel 1 can be completely different than
those used on Channel 2. All of these filter adjustments are saved per preset.
To adjust a band frequency, say you want to control a band at 5kHz, but you don’t see this frequency
option on the face of the pedal. You can select any band (though the band closest to your desired
frequency might make the most sense) and change the frequency value to 5kHz. To do this, select a
frequency, then press + hold the ENCODER KNOB. This brings up the Options menu. “Freq” is the first
option. Click once on the encoder. The screen will now read out the current frequency value of the
band you’ve selected. Rotate the encoder to adjust the frequency. Each band contains the entire
pedal’s range of frequencies, for total sonic customization.
Note that we had to limit the number of frequencies available when editing directly using the
encoder to a smaller subset of the full range from 20Hz to 20kHz. If you need to make single Hz
adjustments to the frequencies, this can be done using the Neuro Desktop or Mobile Apps.

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Adjusting the Q Factor (Width) of a Band
Let’s say you’re used to your DAW equalizer software, and you’re used to being able to make a
particular EQ band more wide or narrow. This can be done on the EQ2! To do this, select a band,
then press + hold the ENCODER KNOB. This brings up the Options menu. “Q factor” is the second
option. Click once on the encoder to edit the Q factor. The screen will now readout the current Q
factor value of the band you’ve selected. Rotate the encoder to adjust the Q up or down. The
available range of value is 0.5 to 10.0. The lowest value (0.5) gives you a very wide filter range while
the highest value (10.0) makes the filter band very narrow.
Setting the Master Output
The small, blue LED-lit knob labeled “OUTPUT” is a master output volume control, integral for
matching, raising, or lowering your signal’s output depending on your rig’s needs. The brightness of
the LED corresponds with the position of the knob, giving you an indicator of how your output level is
set. Note that the OUTPUT control will scale the volume of both channels simultaneously.
Unity gain, or 0dB, is set to be the mid-point of the OUTPUT knob range. When adjusting the knob,
the blue LED and Activity LED will flash twice to indicate when “unity” has been reached.
The Options Menu
For ultimate tone-shaping power and flexibility, we’ve included more parameters in an easy-access
Options page. To access the Options menu, press + hold the ENCODER KNOB. Below “Navigating the
Options Menu” is the list of menu items and what they entail. Please note that the “SHELF” option
will only appear when adjusting bands 1 and 10.
Navigating the Options Menu
1. To enter the Options Menu, press + hold the ENCODER KNOB.
2. From here, you will see the first menu option, FREQ.
3. Rotate the ENCODER KNOB to cycle though the Options choices. Your position within the list of
options is denoted by the vertical strip of LEDs on the left side of the screen.
4. Once you’ve arrived at the option or parameter you’d like to toggle or adjust, press the
ENCODER KNOB.
5. Now, rotate the ENCODER KNOB to toggle between the options, or to adjust a parameter’s
value. You will see the readout on the screen change, such as in the form of “on/off” or by a
numeric parametric value, depending on which option you’ve selected.
6. Press the ENCODER KNOB once more to exit the Options menu and return to your EQ screen.
FREQ
Sets the frequency of the selected band between 20Hz and 20kHz. More precise numbers can be
selected in the Neuro Mobile App and Neuro Desktop Editor.
Q FACT
Sets the Q factor of each filter, measured in octaves. The default setting is 1.0.

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GAIN
Sets the gain per channel. Each channel has its own gain control from -18dB to +18dB. Useful for
matching the Channel 1 and Channel 2 levels when Split mode is used, similar to a line selector pedal.
Note that these channel gain values are separate from the master output volume control.
SPLIT
By default, all of the controls for Channel 2 will match the Channel 1 settings. If Split Mode is turned
ON, the Channel 2 controls can be set to different values. Turning Split OFF will make Channel 2
match Channel 1 again. When Split is enabled, push and turn the encoder to scroll all the way to the
right to view and edit Channel 2. Scroll back to the left to view and edit Channel 1.
LIMITER
Enable or disable the clipping limiter to prevent digital clipping. By default the limiter uses a
lookahead delay, but this can be turned off in the Neuro Mobile App and Neuro Desktop Editor.
GATE
Enable or disable the EQ2’s internal noise gate.
THRESHOLD
Adjust the noise gate threshold from -100dB to -60dB. -60dB would be the most aggressive gating
for very noisy signals.
HP FREQ
Each channel has an independent input high pass filter that is adjustable from 10Hz to 80Hz. Note
that the filter is always active. Setting to 10Hz effectively removes the filter from the signal.
SHELF (Bands 1 and 10 Only)
The lowest and highest filter bands can be changed from a normal “peaking” filter to a “shelving”
type with this control. A low shelf (Band 1) boosts/cuts all frequencies lower (to the left of) the
frequency selected. A high shelf (Band 10) boosts/cuts all frequencies higher (to the right of) the
selected frequency. The frequency and Q settings for these bands will apply to both peaking and
shelving modes.
CONFIG
Toggles between parallel filters (default option) and cascading (series) filters. Most EQ devices use
parallel filters, but some parametric equalizers use filters in series for a more dramatic effect.
FS Option
Select the main global footswitch operation mode. There are eight possible configurations, including
enabling the tuner by double tapping or holding the footswitch. For more information on the
footswitch operation options, visit the Hardware Options section of this guide.
MIDI CH
Sets the global MIDI Channel on your EQ2 from Ch. 1 to Ch. 16.
CNTRL OPTION
Sets the global Control Input mode: 1-Neuro Hub/Expression, 2-External Switch, 3-
Increment/Decrement Preset, 4-Tuner. For more information, see External Switch Options.

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Controls
Rotary Encoder Knob
This is the key to the whole operation. Push + rotate the Encoder Knob to select a frequency band.
Turn the Encoder Knob clockwise or counterclockwise to boost or cut the selected band. Double tap
the Encoder Knob to “start over” and set the bands back to flat. Push + hold the Encoder Knob to
enter the Options screen.
OUTPUT Knob
Think of this knob as a master volume control. Rotate this knob to boost your signal +12 dB or cut
your signal down to -∞dB (zero volume). The OUTPUT Knob is lit with a bright blue LED, which will
glow brighter the higher the knob is turned up. When adjusting the knob, the blue LED and Activity
LED will flash twice to indicate when “unity” has been reached. Unity gain, or 0dB, is set to be the
mid-point of the OUTPUT knob range.
Footswitch
By Default, click the footswitch to engage or bypass the pedal. Hold the footswitch down while the
pedal is bypassed to scroll through presets. Release when you’ve reached your desired preset. The
press + hold actions in both engaged and bypassed states, as well as double-tap actions can be
changed in the Hardware Options.

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Control Input Button
This small button located at the top of the pedal is used to enable or disable external control. It also
is used in many of the Hardware Shortcuts. See the External Control section and the Hardware
Shortcuts section for more details.
ON/OFF LED
The ON/OFF LED indicates whether the effect is bypassed or engaged. In Tuner Mode, when your
note is too sharp or too flat, the LED becomes orange. When your note is at pitch, the LED becomes
green.
Preset SELECT/SAVE Button & Preset LEDs
Push the SELECT/SAVE Button to cycle forward through preset slots. Hold the button to save your
current settings as a preset. The Preset LEDs will indicate which preset slot you are currently working
in.
Presets can also be saved to different locations other than the currently selected slot. To do this,
once a preset has been edited, press and hold the SELECT/SAVE button until the preset LED begins to
blink rapidly, then release the button. Next, do a quick press and release of the SELECT/SAVE button
to select a different preset slot. Finally, press and hold the SELECT/SAVE button.
Display Screen
The luminous, multi-purpose display screen lets you view and edit your EQ curve in real time and
transforms into a navigable “Options” menu when you hold down on the Encoder Knob. The main
display contains the Control/Activity LED, the Band Select LEDs, and the Level Indicators for each
band.
Control/Activity LED
The LED located in the top center is the Control/Activity LED, mapped to the CONTROL INPUT Button.
Frequency Band LED
The LED underneath the frequency values indicates which band you are currently editing. It will
move with the Encoder when you push + rotate the knob. In Split Mode, rotating the Encoder
beyond 16k will bring you to your EQ settings for the “right” channel
Level Indicators
The LED indicator LEDs display the current boost or cut settings for all 10 bands. The center position
is 0dB or “flat”. The maximum boost/cut levels are +/-18dB. In Options mode, the LEDs are
rearranged to display the menu text. In Tuner mode, the LEDs are rearranged to form the note
closest to the frequency you are playing as well as arrows on either side indicating whether to tune
up or down.

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Common EQ Configurations
With 10 customizable bands and +/- 18 dB of boost or cut on tap for each band, there are thousands
of configurations possible when equalizing an instrument. The sheer amount of options can be
paralyzing for anyone new to EQ or unsure of where to start. Below are a few common EQ curves
that can serve as jumping-off points or simply help you dial in some interesting tones.
Vocal Mid-Bump, Mild Bass Reduction
This particular curve accentuates the “vocal” frequencies in the upper-mid range. This can help
vocals stand out in a mix, or give your midrange instrument a more “vocal-like” quality. Cutting or
shelving around 31Hz will reduce any unwanted “boominess” or low frequencies.
“Arrow” Configuration (Drastic Mid Push)
This angular configuration allows the mid frequencies to “slam” your amplifier. A similar
configuration was popularized by Eddie Van Halen with his graphic EQ pedals back in the 70s. This
curve helps a guitar cut through the mix and stand out for solos or lead parts. It’s particularly helpful
if you have an amp that is already distorting. Note that this example is quite drastic and may need to
be tamed depending on your setup.

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Drastic Mid Scoop
You might have heard the term “mid-scooped” to describe modern metal guitar tones. Since the
guitar is already a midrange instrument, cutting those frequencies while boosting the high and low
frequencies can give it a big, thick tone. Take in small doses; not enough mid frequencies can make a
guitar get “lost” in the mix since its prominent frequencies have been cut.
Subtle Mid Scoop
Many amplifiers and overdrive pedals have a very pronounced midrange. Mildly cutting the mid
frequencies can dial out some of that “honk” from classic mids-y amplifiers, giving you a full-
sounding tone without disappearing from a live mix.
Mild Bass Boost, Treble Roll-Off
A curve similar to this one can help to tame a brightly voiced amplifier or pickup. Notice how this
configuration doesn’t look too dramatic—sometimes when EQ’ing, less is more!

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Single Coil Sanctuary
Barely cutting each frequency while giving a spike to about 5-7kHz can make a humbucker-equipped
guitar sound similar to a single coil Strat or Tele. This setting works notably well for darker or
warmer-toned guitars, like a Les Paul, and can really liven up a clean tone.
Stereo Operation & Signal Routing
The EQ2 is flexible for any rig or use case due to its stereo INPUT and OUTPUT jacks. By default, EQ2
auto-detects the cables connected to INPUTS and OUTPUTS 1 & 2 and engages the appropriate
Routing Mode. Stereo Routing can also be performed manually with the Neuro Editors, select
between “Mono In, Stereo Out” or “Stereo In, Stereo Out.”
Auto Routing Modes
There are four routing modes available when the EQ2 is in its default Auto Detect mode. See detailed
descriptions of each Auto Detect mode in the sections below.
•Mono In, Mono Out
•Mono In, Stereo Out
•Stereo In, Stereo Out
•Stereo In, Mono Out

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Mono In, Mono Out
This is the most common use case. Plugging the incoming signal into INPUT 1 with OUTPUT 1
connected to an amp (or the next device in the signal chain) produces a standard mono signal. Dual
processing effects are also mixed down a single output.
Mono In, Stereo Out
This is a very common use case that allows you to create some nice stereo imaging from a single
mono instrument input or use your EQ2 as a splitter to send your signal to two separate outputs.
Note that if Split mode is enabled, you can set up two entirely different equalizer curves for each
output. When the unit is bypassed in this mode, it will automatically switch to Soft Bypass mode to
maintain the bypass signal on the Channel 2 output.

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Stereo In, Stereo Out
This mode should be your default selection for Stereo In, Stereo Out applications. Stereo In, Stereo
Out allows you to continue your stereo chain of effects.
Stereo In, Mono Out
This mode will accept stereo input on jacks INPUT 1 and 2. Inputs 1 and 2 are sent to Channel 1 and 2
equalizers, respectively. The outputs of the Channel 1 and Channel 2 equalizers are mixed together
and sent to OUTPUT 1.
Additional Routing Modes
EQ2 supports an additional routing mode available in the Neuro Mobile App and the Neuro Desktop
Editor,External Loop 2 -> Loop 1.

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External Loop 2 -> Loop 1
This routing mode supports a use case that involves placing two different EQs at two different points
in your signal path. In this routing mode, a loop for external effects is placed after Channel 2, before
Channel 1. INPUT 2 and OUTPUT 2 act as “Send” and “Return” for the effects loop.
Preset Storage and Recall
User Presets store all user editable parameters. This includes the knob positions, parameter settings,
frequencies, routing options, external control, and the full list of Neuro/MIDI accessible parameters.
Included in every preset are settings for either output curve (Channel 1 [Mono] or Channel 2). After a
preset is recalled, you can always tweak the Output in a performance situation by turning the knob.
The knob parameter will then “jump” to the current knob position as it is rotated.
Recalling Presets
The first four User Presets (or eight in Preset Extension Mode) are accessible via the onboard
hardware or with an external footswitch in the following ways:
1. Click the SELECT button to cycle through the hardware user presets. This function works
whether the pedal is engaged or bypassed.
2. By default, when the effect is bypassed, press and hold down the footswitch to cycle forward
through presets. Release when you’ve arrived at your desired slot. If the pedal is engaged, you
will not be able to cycle through presets.
This behavior can be switched in the Neuro App and Neuro Desktop Editor’s Hardware Options
for the EQ2, so you can cycle through presets while the pedal is engaged rather than bypassed.
Recalling MIDI Presets
All 128 available User Presets are accessible with an external MIDI controller. MIDI controllers can be
connected via either the 5-pin DIN (MIDI IN) jack on the side of the pedal, the USB port at the top of
the pedal, or through a Neuro Hub, which connected to the CONTROL INPUT at the top of the pedal.
All 128 User Presets can be recalled with the corresponding MIDI program change (PC) messages.
Note: When recalling presets via MIDI PC messages, you may wish to queue up your preset with
effect bypassed. To do this, simply engage the preset, bypass it with the footswitch, then re-save the

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preset normally. When recalled, the pedal will load the saved user settings, but the effects will be
bypassed until you engage the pedal.
Copying a Preset to a New Location Using the Select/(Hold) Save Button
1. Select the preset you would like to copy by pressing the SELECT Button until the corresponding
PRESET LED is lit.
2. Press and hold the SELECT Button for one second until the corresponding PRESET LED begins
blinking rapidly. Quickly release the SELECT Button. The PRESET LED should continue to blink
rapidly. This indicates that the EQ2 is in copy mode.
3. Tap the SELECT Button to increment the preset. The corresponding PRESET LED should continue
to blink rapidly. Tap the SELECT Button again until the desired copy destination is selected.
4. Press and hold the SELECT Button until the PRESET LED blinks slowly and then turns solid. This
indicates that the preset has been saved to the new location. The original location will not be
changed or overwritten.
Copying a Preset to a New Location Using an External MIDI Controller
1. Select the preset you would like to copy by sending a MIDI program change message to the
EQ2.
2. Press and hold the SELECT Button for one second until the corresponding PRESET LED begins
blinking rapidly. Quickly release the SELECT Button. The PRESET LED(S) should continue to blink
rapidly. This indicates that the EQ2 is in copy mode.
3. Send a desired MIDI Program Change number to indicate the desired copy destination for the
preset.
4. PRESET LED will blink fast and then turn solid. This indicates that the preset has been saved to
the new location.
Copying a Preset to a New Location Using the Neuro App
Using the BURN command in Neuro Mobile or Desktop Editors, it is possible to copy presets to any
location in memory.
Clearing all Presets
All 128 User Presets can be erased using the Factory Reset procedure. Warning: the Factory Reset
procedure resets the entire pedal back to the state in which it was originally shipped –this includes
all global settings and User Presets. A Factory Reset will not erase any firmware updates.
Additional Features
Along with complete equalization control and complex routing options, EQ2 packs a few more
features for the ultimate tone-shaping experience.
Noise Gate
Accessible by the Options menu (see Basic Operation for details on how to access), an optional noise
gate is available for reducing any noise from your signal up to a certain dB threshold. More noise
gate options are available in the Neuro App and Neuro Desktop Editor.

SA270 EQ2 User Guide
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Limiter
Designed to reign in your signal and keep it from peaking or clipping, we’ve implemented an optional
limiter if you need to keep your playing dynamics in check. The limiter acts similarly to a compressor
in that it catches any “peaks”, or volume spikes, from your input signal and regulates them down to a
more uniform level (a configurable “threshold” value).
The limiter is accessible through the Options menu, and more parameters are available in the Neuro
App and Neuro Desktop Editor.
“Split” Mode
Putting your pedal into Split Mode enables a second EQ channel for the Right output. This entirely
separate EQ curve will allow you to have a different EQ for either output, great for any stereo setup.
You can use an external switch like the Source Audio Tap Switch to swap the channels on any preset
you put into Split Mode. In a mono situation, this means you can toggle between 2 separate EQs per
preset.
Tuner
A chromatic tuner is available by pressing the footswitch + ENCODER KNOB at the same time. Other
ways to access the tuner via the pedal’s footswitch can be configured in the EQ2’s Hardware Options
via the Neuro App and Neuro Desktop Editor. See Hardware Options for more details.
Using the Tuner
When the tuner is activated, the Level Indicators rearrange to form notes (A, B, C, D, E, F, and G).
When the note you’re playing is sharped as opposed to natural, the Control/Activity LED will appear
above the note. For example, if you’re tuning to the note D#, this will appear on the screen as “D”
with the Control/Activity LED illuminated above it, whereas D will appear on the screen as a “D” with
NO Control/Activity LED above it.
As you start tuning up, you’ll notice the ON/OFF LED is orange, and arrows on either side of the note
begin to blink, indicating whether to tune up or down to get to the precise pitch. The Band Select
LED will indicate how close you are to the precise pitch of the note.
Note: Using the tuner will always mute the instrument’s signal, whether the pedal is engaged or
bypassed.
Approaching Pitch
As you approach an exact pitch, the ON/OFF LED will change from orange to green, and the Band
Select LED will appear as two LEDs illuminated in the center of the screen just below the note.
Reference Pitch
Standard concert pitch is A=440Hz, but some musicians (such as Jimi Hendrix) prefer to perform in
slight variations of concert pitch, like A=432Hz. The Reference Pitch of the tuner is configurable in
the Hardware Options section of the Neuro App and Neuro Desktop from A=430Hz to A=450Hz.