SUPRO Chorus User manual
All Contents © Bond Audio LLC 2021
CHORUS
User Manual
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CONTENTS
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1. INTRODUCTION
2. EXPLANATION OF CONTROLS
The Supro Chorus is an all-analog, full-stereo modulation stompbox that uses a pair of genuine MN3007
Bucket Brigade IC chips to deliver the thickest, most luscious Chorus effect possible in pedal form, all while
maintaining exceptional headroom. In addition to Speed and Depth knobs, the Supro Chorus features a Time
control that increases the delay time on one side of the stereo field while shortening the delay time on the
other side. Further increasing the available drama is a Dimension control, which mixes the stereo channels into
one another for a mesmerizing intermingling of the two delay lines being modulated in opposite directions. A
Vibrato switch removes the clean pass-through signal, allowing for pure pitch modulation with the Dimension
knob, introducing a more complex, double vibrato effect. Runs on standard 9VDC.
Sets the rate of modulation of the Chorus effect.
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Sets the delay time of the Chorus effect. Turning the Time knob clockwise will increase the
delay time on channel 1 while decreasing the delay time on channel 2.
Sets the amount of crossfeed between the two channels, creating a double-chorus
effect in mono or stereo.
Selects whether your clean signal is mixed in with the effect signal. In the down
position, your clean signal is removed from the output mixer for a Vibrato effect. In the up position,
your clean signal is added in for a Chorus effect.
The Supro Chorus runs on industry standard, 2.1mm neg. tip 9VDC power only.
The Supro Chorus does not take batteries.
The Supro Chorus has two separate channels each with its own particular character. Plugging into IN 1 and IN
2 will allow stereo processing of any sound source. Plugging into IN 1 only will automatically split your signal
into both channels. This allows you to use OUT 1 or OUT 2 or both outputs. Using the Supro Chorus in stereo
is strongly encouraged, as this unit sounds fantastic through a pair of tube amps.
When plugged in, the Supro Chorus will automatically power up in bypass. If you want the pedal to automatically
power up engaged, hold down the footswitch during power up to change this behavior. If you ever want to
switch the behavior back, simply hold down the footswitch during power up to change it back.
Sets the overall intensity of the Chorus effect.
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3. SUPRO LIMITED WARRANTY
Your new Supro product is warranted to be free from defects in materials and workmanship for 1 year from the
original date of purchase. If the product is registered at http://suprousa.com/warranty, coverage is extended to
two years. Tubes and speakers are covered for 90 days. Warranty applies only to the original retail purchaser
of a registered Supro product, subject to the limitations contained in this warranty.
THIS WARRANTY IS EXTENDED TO THE ORIGINAL RETAIL PURCHASER OF SUPRO PRODUCTS BOUGHT
ON OR AFTER JANUARY 1, 2020 ONLY AND MAY NOT BE TRANSFERRED OR ASSIGNED TO SUBSEQUENT
OWNERS. IN ORDER TO VALIDATE YOUR WARRANTY, AND AS A CONDITION PRECEDENT TO WARRANTY
ORIGINAL DATE OF PURCHASE. YOUR PROOF OF PURCHASE OR SALES RECEIPT MUST ACCOMPANY ALL
SERVICED UNDER WARRANTY.
If your Supro product is destroyed, lost or damaged beyond repair while in the possession of Supro for
repair, Supro will replace that product with one of the same or most similar style of a value not in excess of
the original purchase price of your product. Any insurance covering the product, including but not limited to
collector’s value insurance, must be carried by you at your expense.
This warranty covers the cost of both labor and materials on repairs deemed necessary by our Customer
Service Representative which includes:
tampered with or altered.
service has been performed.
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SUPRO MAKES NO OTHER EXPRESS WARRANTY OF ANY KIND WHATSOEVER. ALL IMPLIED, WARRANTIES,
INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, EXCEEDING
THE SPECIFIC PROVISIONS OF THIS WARRANTY ARE HEREBY DISCLAIMED AND EXCLUDED FROM THIS
WARRANTY. SOME STATES AND/OR COUNTRIES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF
IMPLIED WARRANTIES SO THAT THE ABOVE MAY NOT APPLY TO YOU. SUPRO SHALL NOT BE LIABLE FOR
ANY SPECIAL, INDIRECT CONSEQUENTIAL, INCIDENTAL OR OTHER SIMILAR DAMAGES SUFFERED BY THE
PURCHASER OR ANY THIRD PARTY, INCLUDING, WITHOUT LIMITATION. DAMAGES FOR LOSS OF PROFITS
OR BUSINESS OR DAMAGES RESULTING FROM USE OR PERFORMANCE OF THE PRODUCT, WHETHER IN
CONTRACT OR IN TORT, EVEN IF SUPRO OR ITS AUTHORIZED REPRESENTATIVE HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES, AND SUPRO SHALL NOT BE LIABLE FOR ANY EXPENSES, CLAIMS,
OR SUITS ARISING OUT OF OR RELATING TO ANY OF THE FOREGOING.
Register your new guitar at
Complete the warranty request form available at and we will handle it from there!
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