Wyred 4 Sound STI User manual

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 1 of 12
W
Wy yr re ed d 4 4 S So ou un nd d
OWNER’S MANUAL
_____________________________________________________________________
S
ST TI I
S
St te er re eo o I In nt te eg gr ra at te ed d
A
Am mp pl li if fi ie er r
Get Wired, WYRED 4 SOUND

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 2 of 12
T A B L E O F C O N T E N T S
Warranty Registration 3
Unpacking 3
Introduction 3
Design features 4
Front panel operation 4
Set-up menu 4-5
Powering your amplifier 5
DC Trigger 5
Getting connected 5-6
“Break-in”/ warming up Period 6
Troubleshooting 6-7
Got Hum 7
Amplifier Faults 7
Warranty coverage 8-9
Servicing your amplifier 9-11
Product Specifications 12

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 3 of 12
W
Wa ar rr ra an nt ty y R Re eg gi is st tr ra at ti io on n
*
** *I IM MP PO OR RT TA AN NT T* ** *
P
Pl le ea as se e t ta ak ke e a a m mo om me en nt t t to o c co om mp pl le et te e t th he e w wa ar rr ra an nt ty y r re eg gi is st tr ra at ti io on n f fo or rm m l lo oc ca at te ed d o on n o ou ur r w we eb bs si it te e. . Y Yo ou u M MU US ST T
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co om mp pl le et te e a an nd d s su ub bm mi it t t th hi is s f fo or rm m w wi it th hi in n 3 30 0 d da ay ys s o of f p pu ur rc ch ha as se e t to o a ac ct ti iv va at te e y yo ou ur r w wa ar rr ra an nt ty y. .
U
Un np pa ac ck ki in ng g
The STI series packaging contains:
1 – Owners Manual
1 – 6’ AC Power Cable
1 – 6’ DC Trigger Cable
1 – STI stereo integrated amplifier
1 – Remote control
2 – AAA Batteries
Carefully inspect your new integrated amplifier for any shipping damage. Please contact your dealer or Wyred 4
Sound directly if you notice any shipping damage or for anything you suspect is missing from your shipment. All
packaging cartons will easily fold flat for convenient storage, and should be stored for future use should there be
one.
I
In nt tr ro od du uc ct ti io on n
Wyred 4 Sound products are a perfect example of what is accomplished when practical engineering and
knowledge are combined. All components are selected for the greatest possible functionality, durability, and most
importantly quality. Wyred 4 Sounds’ excellence in engineering will provide you with first-class performance and
years of satisfaction.
Wyred 4 Sound audio products are designed to bring you closer to the beauty of your music. Our goal is
to bring the performance of the recording right into your home with as little change as possible. As you can
identify, our drive is focused on the customer. We know what others have to offer, so you can be sure that our
value will be substantially more than theirs to keep the American made products desirable. We greatly appreciate
your purchase and expect your complete satisfaction. Wyred 4 Sound hopes that you will continue to grow with
us as we continue to provide the quality and functionality that you can learn to depend on.

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 4 of 12
D
De es si ig gn n f fe ea at tu ur re es s
There are many reasons why the STI series integrated amplifiers are better than the competition. To start
with, the volume control in the STI is a true-resistive ladder type that offers truer linearity, and supreme sonic
quality. The line-stage within the integrated doubles as an unbalanced to balanced converter which provides a
balanced signal from unbalanced inputs.
A loop in/out feature is also on hand with the STI integrated amplifiers. In the setup menu, you can select
the loop feature to insert a digital crossover or similar devices into the audio path. When the loop feature is
activated, Input 5 becomes loop in, and the AUX out becomes loop out.
With a set of balanced inputs, 4 sets of unbalanced inputs and a set of unbalanced outputs, connection
possibilities are vast. Absolute phase and balance control are easily selected through the supplied remote for
those out of phase recordings, and room adjustments.
User interface is made easy with the VFD display and optical rotary encoder. Allowing input naming and
HT Bypass input selection, the setup menu is easily accessed for customization. Several display dimming steps
including “off” are available through the remote for stealth operation. Powering up the STP can be done several
ways, by pushing in on the volume knob, by pressing power on the remote, and by the remote DC trigger in when
HT Bypass is selecting in the setup menu. When an input is selected to be used as the HT input, the DC trigger
can be activated by a surround processor to power up the unit, and automatically set the volume to unity gain.
This allows for all volume controls to be made through the surround processor. When the processor is shut
down, so is the STI. When 2ch listening is desired, then manual operation can be executed from the front of the
unit, or through the remote.
F
Fr ro on nt t p pa an ne el l o op pe er ra at ti io on n
The front of the STP offers several features, power on/off, input selection, volume control, muting, setup
routine, and display for user feedback. For phase, balance, and dim control, the remote must be used. To enter
the setup mode, input up and down must be pressed in while the power is turned on by pushing in the volume
knob. Once in the setup menu, input up/down is used to scroll through the settings, mute is used to select the
setting for adjustment, and the volume knob is used to adjust the setting. For input naming, the volume control
will be used to select the character, and the mute button to move to the next character position for adjustment.
Once all settings are made (automatically saved once changed), the setup menu can be closed by pressing the
power button (volume knob) again at any time.
S
Se et t- -u up p m me en nu u/ / i in ns st tr ru uc ct ti io on ns s
To enter the set-up menu proceed with the following steps:
1. Make sure the unit is plugged in, power switch on rear is on, and the unit is off.
2. Push and hold in the Input up and down buttons while pressing the power button (knob) once.

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 5 of 12
3. Release all the buttons when the set-up screen shows up on the display.
4. Use the input up and down buttons to navigate the menu function.
5. Use the mute button to select and enter the menu function.
6. Use the volume knob to change the setting with-in the menu function.
(You can press the input buttons to save the settings and move to another function)
7. Once all settings have been made, press the power button again (knob) to set and store you selections.
When selecting the HT Bypass input, make sure that the proper input is selected which is connected to your
HT processor. When the trigger is applied after this setting is made, the unit will automatically select that input,
set the volume to -0db, and turn on other connected equipment via the DC trigger output.
When the Loop out feature is used, Aux out becomes the loop out which will feed the connected components
input, and Input 5 will become the loop in which will come from the output of the connected component. Please
note: the loop in connectors are directly connected to the internal amplifiers as if the unit was a standalone amp
with 27db of gain. The loop out is controlled by the volume control, but the loop in is not. Make sure you have
all connections made properly to ensure no damage is made to your equipment.
P
Po ow we er ri in ng g y yo ou ur r a am mp pl li if fi ie er r
When power is applied to the amplifier and the switch located on the rear is in the on position, the
amplifier will turn on. If you would like to manually turn the amplifier on and off, this switch is where you would
want to do so. Leaving your amplifier on all the time will not hurt it, shorten the lifespan, or degrade the future
sound. The STI series amplifiers make zero noise internally and to connected gear. The unit shouldn’t be in any
way noticeable of its operation other than the display status on the front panel. To prevent power surges, we
recommend using quality surge suppressor equipment. Turning the switch off on the rear of the unit will also
protect against surges and spikes should some occur without proper protection.
D
Dc c t tr ri ig gg ge er r
The STI series stereo amplifiers are equipped with a 12VDC remote trigger input and output. You can
connect the 12V trigger output of your processor or source to the 12V trigger input on the amplifier for an easy
remote power up and HT configuration every time. When the unit is in standby via the remote trigger, the
amplifier is powered up, but disabled. The current draw in standby mode is less than 10W per channel, and
shouldn’t measure too much on your electricity bill. The trigger input will work from 5-25V, so there shouldn’t
be any issue with the voltage tolerance on source equipments outputs rated for 12V. You can also connect the
trigger output to additional amplifiers or equipment to be turned on and off with the STI amplifier.
G
Ge et tt ti in ng g c co on nn ne ec ct te ed d
CAUTION: Disconnect the power cord or put the power switch in the off position before making any
connections to your amplifier to minimize the risk of electric shock and possible loudspeaker damage. Power
your amplifier after all final connections have been made. NOTE: This is a balanced amplifier and you should

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 6 of 12
NEVER connect either output to a ground point! Doing so may cause damage to your amplifier and/or
connected gear.
The binding posts that you will find on the STI series are made of nothing but the best. Each binding post
is made of highly ductile “OFC” copper alloy. Both clamping nuts are built out of one piece, and offers excellent
grip. All metallic surfaces offer a 24-carat gold-plating, and are non magnetic surfaces. The binding post will
accept 4mm banana plugs, spades of 6 and 8mm, and crimped cable ends up to 10 AWG. The easiest
connection is made with banana plugs, but be sure that you use the highest quality that you can find. Make sure
that the banana plugs fit snugly into the terminals. Some inexpensive banana plugs can cause a highly resistive
connection which can result in a noticeably higher distortion output to the connected speakers.
The RCA (unbalanced) jack is made with high quality gold plated copper, and should be properly
connected with interconnects of the same value. The Neutrik XLR (balanced) connectors are the finest balanced
connector on the market, and are the best possible option for connecting your amplifier to your sources.
Using the new W4S power and interconnect cables would be a great way to ensure your system is closer to
what we call “our reference”. We are now offering superior cables at an affordable rate that anyone can afford.
For more information, please visit the web-site, or send an email to [e-mail] .
“
“B Br re ea ak k- -i in n” ” p pe er ri io od d
Your new STI series amplifier will deliver outstanding performance right out of the box. However, you
should plan on improvements as it reaches its normal operating temperature and once all of the components have
a chance to “settle in”. Our experience has shown that the amplifier has reached its’ potential after the initial 300
hours. You will find that the initial 100hours, the amplifier will start to shed the initial “brightness” and somewhat
harsh transitions. During the second 100 hours, the amplifier will start to become more fluid, and smoother
overall. The remaining 100 hours is where the lesser of the change happens, and you might still notice
improvements over time.
After the initial break in period, your amplifier will be ready to perform within minutes of powering it on.
T
Tr ro ou ub bl le es sh ho oo ot ti in ng g
No sound?
If you have your input source and speakers connected, and you can’t get music to play, check the following:
1. Verify that the power cord is plugged in and that the outlet is powered up.
2. Check the front panel and make sure that the blue light is on.
3. If the front panel is blue and there still isn’t any sound, put your ear next to the tweeter of your speaker
and have someone turn your amplifier off then on again at the rear switch. You should barely hear a
click when the amplifier is turned on and off

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 7 of 12
4. If you can hear the amplifier turn on and off, but there still isn’t any sound, make sure you are getting a
signal to it.
5. Verify that the input selector is selecting the proper input for what you have connected.
6. If the input is in the proper position and still no sound, then try replacing the interconnects to verify the
connection between the amplifier and source.
7. Verifiy that the interconnects are conducting by replacing them on a different set from a connection that
you know works.
8. Now that you have interconnects that you know work, try connecting the amplifier to another source
that you know has worked in the past.
If you are still experiencing problems after checking all possibilities and using the resources provided please
contact your dealer or Wyred 4 Sound directly for further assistance.
G
Go ot t h hu um m? ?
Is there too much hum or hiss coming out of your speakers? If you put your ear right next to the tweeter
of your speaker, you should barely be able to hear any hiss from the amplifier in normal conditions. If the noise
is easily heard at a distance, try putting your source on mute, or pause. If this eliminates the noise, it’s inherent in
the source or preamplifier. If your source doesn’t disconnect the outputs when muted, and the noise still exists
while muted, try disconnecting the inputs to the amplifier. If the noise is still there when the inputs are
disconnected, and the inputs are shorted with shorting plugs, then your amplifier may need some servicing. If the
noise is not there when the inputs are disconnected, try putting a cheater plug (ground isolator) on one or all
components in order to eliminate a ground loop issue. NOTE: We only recommend using a ground isolator for
trouble shooting purposes, and should be removed after the problem has been found. Having the ground of any
unit disconnected can potentially create a dangerous situation.
An easy way to locate a noisy component is to replicate the problem then start disconnecting components
one at a time, starting with a source. Digital cable boxes and satellite receivers are notorious for making ground
loop hum. This is normally caused by the potential difference on the input wire (shield side) for either of the
boxes when referenced to ground. If this is the case in your system, the installation of an isolating transformer
would be the easiest solution and are normally readily available at your local electronics parts store. A better
solution is a power strip with grounded and surge protected F-connectors that you can pass a signal through.
A
Am mp pl li if fi ie er r f fa au ul lt ts s
When the amplifier faults, there will be no indication other than the lack of music. The STI series
amplifiers are very robust and can handle the heaviest of loads. Under normal circumstances, there shouldn’t be
any issues with faulting. If you suspect a problem, check the outputs and speaker connections to make sure they
aren’t shorted to each other or ground. If the amplifier faults while playing music loud, you may need a bigger
amplifier for your taste or system. Contact your dealer or Wyred 4 Sound for other options you can explore.

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 8 of 12
W
Wa ar rr ra an nt ty y c co ov ve er ra ag ge e
Wyred 4 Sound’s warranty obligations are limited to the terms set forth below:
Wyred 4 Sound, as defined below, warrants this Wyred 4 Sound-branded hardware product against
defects in materials and workmanship under normal use for a period of FIVE (5) YEARS from the date of retail
purchase by the original end user purchaser ("Warranty Period"). If the product has been transferred from the
original owner to a second hand owner it has a ONE (1) YEAR warranty, valid from the original date of purchase
by the original owner. If a hardware defect arises and a valid claim is received within the Warranty Period, at its option, Wyred 4
Sound will either (1) repair the hardware defect at no charge, using new or refurbished replacement parts, or (2) exchange the product
with a product that is new or which has been manufactured from new or serviceable used parts and is at least functionally equivalent to
the original product. Wyred 4 Sound may option that you replace defective parts with new or refurbished user-installable parts that
Wyred 4 Sound provides in fulfillment of its warranty obligation. A replacement product or part, including a user-installable part that has
been installed in accordance with instructions provided by Wyred 4 Sound, assumes the remaining warranty of the original product or
ninety (90) days from the date of replacement or repair, whichever provides longer coverage for you. When a product or part is
exchanged, any replacement item becomes your property and the replaced item becomes Wyred 4 Sound's property. Parts provided by
Wyred 4 Sound in fulfillment of its warranty obligation must be used in products for which warranty service is claimed. When a refund is
given, the product for which the refund is provided must be returned to Wyred 4 Sound and becomes Wyred 4 Sound's property.
EXCLUSIONS AND LIMITATIONS
Wyred 4 Sound does not warrant that the operation of the product will be uninterrupted or error-free. Wyred 4 Sound is not
responsible for damage arising from failure to follow instructions relating to the product's use. This warranty does not apply: (a) to
damage caused by use with non-Wyred 4 Sound products; (b) to damage caused by accident, abuse, misuse, flood, fire, earthquake or
other external causes; (c) to damage caused by operating the product outside the permitted or intended uses described by Wyred 4
Sound; (d) to damage caused by service (including upgrades and expansions) performed by anyone who is not a representative of Wyred
4 Sound or a Wyred 4 Sound Authorized Service Provider; (e) to a product or part that has been modified to significantly alter
functionality or capability without the written permission of Wyred 4 Sound; (f) if any Wyred 4 Sound serial number has been removed
or defaced.
TO THE EXTENT PERMITTED BY LAW, THIS WARRANTY AND REMEDIES SET FORTH ABOVE ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND CONDITIONS, WHETHER ORAL OR
WRITTEN, STATUTORY, EXPRESS OR IMPLIED. AS PERMITTED BY APPLICABLE LAW, WYRED 4 SOUND
SPECIFICALLY DISCLAIMS ANY AND ALL STATUTORY OR IMPLIED WARRANTIES, INCLUDING, AND WITHOUT
LIMITATION, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND WARRANTIES
AGAINST HIDDEN OR LATENT DEFECTS. IF WYRED 4 SOUND CANNOT LAWFULLY DISCLAIM STATUTORY OR
IMPLIED WARRANTIES THEN TO THE EXTENT PERMITTED BY LAW, ALL SUCH WARRANTIES SHALL BE
LIMITED IN DURATION TO THE DURATION OF THIS EXPRESS WARRANTY AND TO REPAIR OR REPLACEMENT
SERVICE AS DETERMINED BY WYRED 4 SOUND IN ITS SOLE DISCRETION EXCEPT AS PROVIDED IN THIS
WARRANTY AND TO THE EXTENT PERMITTED BY LAW, WYRED 4 SOUND IS NOT RESPONSIBLE FOR DIRECT,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY BREACH OF WARRANTY OR
CONDITION, OR UNDER ANY OTHER LEGAL THEORY, INCLUDING BUT NOT LIMITED TO LOSS OF USE; LOSS
OF REVENUE; LOSS OF ACTUAL OR ANTICIPATED PROFITS (INCLUDING LOSS OF PROFITS ON CONTRACTS);
LOSS OF THE USE OF MONEY; LOSS OF ANTICIPATED SAVINGS; LOSS OF BUSINESS; LOSS OF OPPORTUNITY;
LOSS OF GOODWILL; LOSS OF REPUTATION; LOSS OF, DAMAGE TO OR CORRUPTION OF DATA; OR ANY
INDIRECT OR CONSEQUENTIAL LOSS OR DAMAGE HOWSOEVER CAUSED INCLUDING THE REPLACEMENT OF
EQUIPMENT AND PROPERTY, ANY COSTS OF RECOVERING, PROGRAMMING, OR REPRODUCING ANY PROGRAM
OR DATA STORED OR USED WITH WYRED 4 SOUND PRODUCTS AND ANY FAILURE TO MAINTAIN THE
CONFIDENTIALITY OF DATA STORED ON THE PRODUCT. THE FOREGOING LIMITATION SHALL NOT APPLY

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 9 of 12
TO DEATH OR PERSONAL INJURY CLAIMS. WYRED 4 SOUND DISCLAIMS ANY REPRESENTATION THAT IT WILL
BE ABLE TO REPAIR ANY PRODUCT UNDER THIS WARRANTY.
O
Ob bt ta ai in ni in ng g w wa ar rr ra an nt ty y s se er rv vi ic ce e
Please access and review the resources referred to in the documentation accompanying this hardware product before
requesting warranty service. If the product is still not functioning properly after making use of these resources, please contact
the Wyred 4 Sound representatives or, if applicable, a Wyred 4 Sound Authorized Service Provider located using the
information provided in the documentation. A Wyred 4 Sound representative or Wyred 4 Sound Authorized Service
Provider will help determine whether your product requires service and, if it does, will inform you how Wyred 4 Sound will
provide it. Wyred 4 Sound or its Wyred 4 Sound Authorized Service Providers will provide warranty service on products
that are tendered or presented for service during the Warranty Period, as permitted by law. Wyred 4 Sound is not
responsible for freight charges to our facility for warranty repairs. We will cover return freight charges (domestic only) if the
unit is found to be faulty and still within the warranty coverage period. You will be responsible for delivery and return
shipping and handling charges if the product cannot be serviced in the country it is in. In accordance with applicable law,
Wyred 4 Sound may require that you furnish proof of purchase details and/or comply with registration requirements before
receiving warranty service. Please refer to the accompanying documentation for more details on this and other matters on
obtaining warranty service.
Recovery and reinstallation of system and application software and user data are not covered under this Limited Warranty.
S
Se er rv vi ic ce e
In the unlikely event there is a problem with your Wyred 4 Sound component, please contact your dealer,
distributor, or Wyred 4 Sound to discuss the problem before you return the component to our manufacturing
facilities for repair. Products shipped to the factory will be refused and returned freight collect if not accompanied
by a Wyred 4 Sound Service Department issued return authorization number (RA Number). Return
authorization numbers must be prominently displayed on the outside of the box and an accompanying letter
describing the problem and re-listing the RA number must be inside the box to qualify for service.
To contact the Wyred 4 Sound Service Department:
TELEPHONE [phone]
HOURS M/F 8:00 am to 5:00 pm PST
FAX [phone]
E-MAIL [e-mail]
WEBSITE http://www.wyred4sound.com

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 10 of 12
If you are located in the United States use the following procedure:
1. Obtain a Return Authorization Number (R/A number) and shipping address from the Wyred 4 Sound Service
Department.
2. Insure and accept all liability for loss or damage to the product during shipment to the Wyred 4 Sound factory
and ensure all freight (shipping) charges are prepaid.
The product may also be hand delivered to the California facility if arrangements with the Service Department
have been made in advance. Proof of purchase from an authorized Wyred 4 Sound dealer, distributor or agent
will be required for warranty validation at the time of hand delivery. Use the original packaging to ensure the safe
transit of the product to the factory, dealer, or distributor. Wyred 4 Sound may, at its discretion, return a product
in new packaging and bill the owner for such packaging if the product received by Wyred 4 Sound was boxed in
nonstandard packaging or if the original packaging was so damaged to the point it was unusable. If Wyred 4
Sound determines that new packaging is required, the owner will be notified before the product is returned. To
purchase additional packaging, please contact your authorized Wyred 4 Sound dealer, distributor, or the Wyred 4
Sound Service Department for assistance.
S
Se er rv vi ic ce e p pr ro oc ce ed du ur re e
If you are located outside the United States use the following procedure:
1. Obtain a Return Authorization Number (R/A number) and shipping address from your dealer or distributor’s
Service Department.
2. Insure and accept all liability for loss or damage to the product during shipment to the dealer or distributor’s
Service Department and ensure all freight (shipping) charges are prepaid.
If you feel your authorized dealer or distributor is either unwilling or unable to service your Wyred 4 Sound
products, please contact our service department at [e-mail] or at the above contact
numbers to discuss and resolve the situation.
Voltage changes to match your country’s voltage and frequency requirements to your Wyred 4 Sound product are
possible only at the time of purchase. The STI series amplifiers are set to a fixed voltage to match your country’s
requirements and may not be easily changed.

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 11 of 12
Your Wyred 4 Sound product serial number is:
Your dealer or distributor information:
Your purchase information:
C
Ch he ec ck k o ou ut t t th he e l la at te es st t n ne ew ws s, , p pr ro od du uc ct ts s a an nd d s se er rv vi ic ce es s! !
W
WW WW W. .W WY YR RE ED D4 4S SO OU UN ND D. .C CO OM M
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Ge et t W Wi ir re ed d, , W WY YR RE ED D 4 4 S SO OU UN ND D! !

_____________________________________________________________________
WYRED 4 SOUND STI Integrated amplifier v2.1
4235 Traffic Way
Atascadero, CA 93422
PH: 805-466-9973
FAX: [phone]
[e-mail]
www.wyred4sound.com
©2013 WYRED 4 SOUND
All rights reserved. Page 12 of 12
P
Pr ro od du uc ct t s sp pe ec ci if fi ic ca at ti io on ns s
STI-500
STI-1000
Typical THD+N 8Ω (10W out) 0.005% 0.008%
Power Output 8Ω @ 0.2%
THD+N 250Wpc 570Wpc
Power Output 8Ω @ 1.0%
THD+N 320Wpc 615Wpc
Power Output 4Ω @ 0.2%
THD+N 550Wpc 1,140Wpc
Power Output 4Ω @ 1.0%
THD+N 625Wpc 1,225Wpc
IMD (CCIF) 0.0005% 0.0005%
Transient Intermodulation (TIM) 0.003% 0.005%
Output Idle Noise 80uV 80uV
Efficiency (4Ω)
80% @
500W
78% @
1000W
Efficiency (8Ω)
77% @
200W
77% @
500W
Frequency Response (20Hz--
20kHz) ± 0.3db ± 0.4db
Lower Bandwidth
3.3Hz
all loads
3.3Hz
all loads
Balanced Input Impedance
60.4kΩ
60.4kΩ
Unbalanced Input Impedance 60.4kΩ60.4kΩ
Dynamic Range 115db 118db
Gain 0-39db 0-39db
Sensitivity 0.55 V 0.75 V
Output Impedance 0.005 Ω0.005 Ω
Min Load 2Ω2Ω
Damping Factor (100Hz 8Ω) 2000 2000
Max Output Current 35A 40A
Channel Tracking
<+/-
0.05db <+/- 0.05db
Crosstalk (20Hz--20kHz) > 77 db >85 db
Idle power consumption
25w
35w
*All specs are given as a per channel rating*