Signal Processors

Does this take on delay-pedal history merit a place in your pedalboard’s future?

A modern stompbox take on a classic digital delay unit — what’s not to like?

Tech 21's Hot Rod Plexi claims to replicate the classic tone and feel of a vintage Marshall amp in pedal form. Does it deliver, or is it really just another overdrive pedal?

Compression is an often under-rated weapon in the electric guitarist's arsenal.

The uniquely complex, spacious swirl of a real, mechanical Leslie rotary-speaker cabinet sound in a pedal!

The latest version of the Digitech Whammy — the pedal-operated digital pitch-shifter that has been keeping guitarists amused...

It's perfectly possible to use a tremolo arm to make the pitch of your guitar strings drop in real time, and guitarists have...

R3FX are a one‑man guitar‑effects outfit based in the US, and they offer a range of pedal mods by mail order, as well as a ...

These flexible effects pedals from the makers of the original Harmonizer are equally at home on stage and in the studio, with guitar, keys or even a mixing desk.

We check out this traditional JoeMeek compressor in pedal format, for use with guitars, basses and other instruments.

This classy stomp box is much more than a guitar effect, and it is equally impressive on stage and in the studio.

Fishman's acclaimed process for improving the sound of acoustic guitar pickups is now available in pedal format — and with 24-bit converters and 32-bit internal processing, this is a distinctly superior-sounding Aura.

This unusual effects pedal combines a bank of eight band-pass filters with an analogue-style control sequencer.

This new optical compressor not only has a smooth sound, but also offers gain-reduction metering to help you set it up.

Two effect pedals from the celebrated synth manufacturer provide serious modulation flexibility within a stomp-box format.

Since 1999, Bob Moog's Big Briar company has been making analogue filters and effects pedals based on his original Moog module designs. Now there's a central control unit, so that you can use them all together as a complete processing system.

Line 6 have released two DSP-based effects pedals that use physical modelling to recreate the echo, delay and modulation treatments of a bygone age. Paul White — who was there first time around — finds out how they measure up to the real thing.

It's cheap, it's cheerful and it's easy to use. Paul White rediscovers the joys of simplicity with Zoom's most affordable guitar multi-effects unit ever.