"I was psyched to discover the GCS-3 - I was needing to put together a "no amp" super compact rig ... Just bringing a strat and this tiny pedalboard I put together with the GCS-3 as the last thing in the chain... It doesn't just sound good, it feels good. I'm looking forward to dialing it in even more and am so psyched with the idea of being able to show up with one guitar and a few pedals/boxes and go straight into the PA and sound great."

-- Ian Ethan Case

"The GCS-2 is an analog guitar cabinet simulator with enough variable parameter control to satisfy the most demanding stage, studio or bedroom guitarist (or anyone else who needs a great speaker sim.) Designed by David Tarnowski, the man behind all of the great ADA products, the GCS-2 doesn't fail in its mission: It sounds realistic and utterly convincing. Check it out and see if you can resist."

-- Brett Kingman, Guitar Player and Reviewer, extraordinaire

GCS-2 features:


"David – the GCS-2 is simply awesome! I did a quick little A/B recording for a friend of mine who is a roadie for Clint Black (and a few others) because I thought he had to hear it since it’s such an amazing tool. Thanks again for the hookup, this thing is going to get some use!"

-- Aaron, Oregon

GCS-2 Guitar Cabinet Simulator & DI Box

featuring Natural Resonance Response

Turn any full-range passive or powered monitor speaker or sound system into a dynamic guitar cabinet, loaded with your choice of drivers.

The new ADA GCS-2 is an easy-to-use guitar cabinet simulator in a small, rugged package designed for guitar players and sound engineers who are looking for high quality analog solutions for live sound reinforcement systems, stage monitors and recording electric guitar.


The new ADA GCS-2 is ideally suited for live performance and studio applications.  A unique feature of the GCS-2 is that it replicates the low frequency natural resonance of a guitar speaker cabinet at loud volumes, which is especially noticeable in the SEALED CABINET configuration.  

The GCS-2 is inserted between the output of your preamplifier (or effects pedal chain) and a mixing or recording console to replace the close proximity microphone that is typically used to mic a guitar speaker cabinet.  This eliminates the problem of bleed through or crosstalk from other instruments or amplifiers in live situations.  The GCS-2 is especially useful for owners of our APP-1 guitar pedal preamp because it can split the output of the APP-1 for sending the signal to a guitar amplifier and to a mixing console for recording, house sound systems and stage monitor systems.

We have tested the GCS-2 in live performances by sending a feed to a stage monitor for the guitarist and eliminating the combo or head with stack. The same feedback that you get from a stack or a hot-rod combo can easily be produced in the monitor, and interestingly, with more control.