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RADIAL LIMITED THREE YEAR TRANSFERABLE 

WARRANTY 

Radial Engineering Ltd. warrants this product to be free from defects in material and 

workmanship to the original owner and will remedy any such defects free of charge 

according to the terms of this warranty. Radial Engineering will repair or replace at its 

option any defective component(s) of this product, excluding the finish, the footswitch 

(footswitch is warranted for 90 days) and wear and tear from normal use, for a period 

of three (3) years from the original date of purchase. In the event that a particular 

product is no longer available, Radial Engineering reserves the right to replace the 

product with a similar product of equal or greater value. To make a request or claim 

under this limited warranty, the product must be returned prepaid in the original shipping 

container (or equivalent) to Radial Engineering or to an authorized repair centre and 

you must assume the risk of loss or damage. A copy of the original invoice showing 

date of purchase and the dealer name must accompany any request for work to be 

performed under this limited warranty. This limited warranty shall not apply if the product 

has been damaged due to abuse, misuse, misapplication, accident or as a result of 

service or modification by any other than an authorized repair centre.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE 

HEREOF AND DESCRIBED ABOVE. NO WARRANTIES, WHETHER EXPRESSED 

OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES 

OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, SHALL 

EXTEND BEYOND THE RESPECTIVE WARRANTY PERIOD DESCRIBED ABOVE 

OF THREE YEARS.

RADIAL ENGINEERING SHALL NOT BE RESPONSIBLE OR LIABLE FOR ANY 

SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS ARISING 

FROM THE USE OF THIS PRODUCT. THIS WARRANTY GIVES YOU SPECIFIC 

LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH MAY VARY 

DEPENDING ON WHERE YOU LIVE.

www.rad

ialeng

.com

BigShot ABY

User Guide

Radial BigShot ABY User Guide Part #: R870 1120 10 / 06-2016 
Subject to change without notice

BigShot ABY

 User Guide

Radial Engineering Ltd.

BigShot ABY

 User Guide

Radial Engineering Ltd.

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INPUT 

jack connects the cable 

from your instrument.

TUNER 

jack common output 

that can be used for an elec-

tronic tuner. It is always on.

OUTPUT-A 

jack connects to 

your main amp. 

OUTPUT-B 

jack connects to 

your second amp.

9VDC 

power jack connection 

for power supply (for LED’s 

only).

TOGGLE

 footswitch selects 

between output A or B.

 

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A/B LED 

two LED status indica-

tors to display the active amp.

BOTH 

footswitch with LED indi-

cator turns outputs A and B on at 

the same time. 

ISO 

switch engages the internal 

isolation transformer on output B 

to eliminate ground loop hum.

180º 

switch reverses the phase 

on output B. This switch only 

works when the ISO transformer 

is engaged. 

  

LIFT 

switch disconnects or ‘lifts’ 

the ground from the cable shield 

on output B.

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CAUTION: PLEASE READ THE IMPORTANT NOTICE ON 

THE BACK COVER BEFORE USING THE BIGSHOT ABY

IMPORTANT NOTICE! 

The Radial BigShot ABY is a passive switcher that is specifically designed for use 

with amplifiers with proper electrical safety grounds that have been approved by 

nationally recognized electrical authorities such as UL in the United States, CSA 

in Canada and other similar bodies in countries around the world. 
It is further understood that due to the unpredictable nature of connecting any 

number of different amplifiers and pedals together, using the ABY can pose a 

potential for electric shock, and as such, the user is completely responsible for 

any and all consequences as these are beyond our control. 
This means that you are completely responsible to ensure the safe and proper 

use of the BigShot ABY and to clearly understand that using the BigShot ABY 

confirms you have taken full responsibility. If you are not 100% sure of your ac

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tions, please consult a qualified technician for advice before using this device or 

connecting any of your equipment to it.  

FEATURE AND FUNCTIONS

True to the Music

True to the Music

True to the Music

®

®

®

Radial Engineering Ltd.

1588 Kebet Way,  Port Coquitlam

British Columbia, Canada, V3C 5M5      

Tel: 604-942-1001 • Fax: 604-942-1010  

 

Email: [email protected]

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