Signal Processors

The 1973 version two Big Muff Pi — with a ram's head printed on the casework — was used on so many classic records that EHX have decided to bring it back.

These audio examples accompany our Kemper Profiler Stage review from SOS December 2019.

Kemper finally have a floorboard version of their groundbreaking Profiling Amplifier. Has it been worth the wait?

There are plenty of very heavily distorted examples already out there to be heard, but I’ve gone for some tones that I think challenge the technology a little more.

Widely touted as Boss's response to UA's popular OX, the Tube Amp Expander actually offers a contrasting approach. Will one of them be a clear winner?

The Gigboard crams the processing power of Headrush's flagship Pedalboard into a compact and easy to use format.

Don’t have a great-sounding room? Can’t turn your amp up to get the sounds you want? Want to turn down your speaker without sacrificing your tube amp’s tonality? Maybe this changes everything...

We’re used to seeing convolution technology in plug-ins, but recent years have seen this increasingly appearing in hardware form. DigiTech’s take on this is a compact stompbox-format dual-channel cabinet emulator.

Building on Avid’s Eleven Rack technology, this new hardware amp modeller promises to combine great sound with ease of use.

While an overdrive pedal might not seem like an obvious studio accessory I’ve often found that using an analogue overdrive pedal before a software modelling amp/speaker produces more musical results.

Expanding on the modelling technology used in their Variax and Variax Acoustic, Line 6 have dropped an octave and turned their attention to the bass guitar. The Variax Bass features 24 models of 'classic' instruments — is it all the bass you'll ever need?

Roland's new V-Bass refines the technology developed for the pioneering V-Guitar systems to meet the demands of bass players.