New Gear Review: Tech 21 Boost COMP Compressor


The Boost COMP Compressor is all about the best signal chain order for the best tone. The Presence control provides pre-compression tonal boost to achieve high-end string attack and clarity. The Tone control uses post-compression, cut or boost, for generating mellow lush tones without getting too dark.

Boost COMP utilizes old school, all-analog, Field Effect Transistor (FET) circuit design—FETs came in the ‘60s and promised the sonic characteristics of tubes in a solid-state device. So like tubes used for musical amplification, FETs tend to be inherently warmer and more transparent.

Boost COMP has up to 21dB of clean boost to increase the output level without adding more compression. A true post-boost, this function can also be used independently as well.

Other features include: 1/4-inch high-impedance input and low impedance output, silent-switching and custom footswitch actuators. Operable with 9V battery (not included) or optional DC power supply, Tech 21 Boost COMP sells for $195 MSRP.


Barry Rudolph is a recording engineer/mixer who has worked on over 30 gold and platinum records. He has recorded and/or mixed Lynyrd Skynyrd, Hall & Oates, Pat Benatar, Rod Stewart, the Corrs and more. Barry has his own futuristic music mixing facility and loves teaching audio engineering at Musician’s Institute, Hollywood, CA. He is a lifetime Grammy-voting member of NARAS and a contributing editor for Mix Magazine. barryrudolph.com