8x4 AMP/SPEAKER Selector

Imagine you could check all your guitar amps with only one guitar chord. Here is the solution.

The Amplifier/Speaker Selector is a system which allows you to connect 8 amplifiers to 4 speakers, providing the possibility of easily selecting combinations of amplifiers and speakers. Thus avoiding waste of time and making work easier and without quality loss in the signal path.


How it was created:
After several suggestions of Ludovico Vagnone guitarist, Pablo Kahayan started developing a prototype of what is now known as the 4x4 selector. After many trials, Pablo found the perfect circuit to keep the purest possible signal. In this way you could combine different guitar amps with different speakers. After 4x4 selector  the 8x4 was developed. Thanks to Ludovico Vagnone for all his contributions.

«This is a life
changing unit for me»
                                                     Tim Pierce
«A unique piece
that every guitarist
should have in his studio»
Tim Pierce and Pablo Kahayan

​​· Inputs:

1 Jack instrument input

8 Jack inputs from Amps

· Outputs:

8 Jack outputs to Amps


4 Jack outputs to Speakers



Operator's Manual -

⚠️ WARNING of Setup- 

Front & Rear Panels-

8x4 Selector Q&A-

8x4 Selector Brochure -

ATT/Spk Simulator -

Live, studio and guit shop

English Tutorial Video

Spanish Tutorial Video

Italian Tutorial Video

Portuguese Tutorial