The Crimson is a volume modulation tremolo effect. The 2" x 2" box can squeeze its way onto any pedal board. Internal trimmers control speed and depth. The sound is smooth and natural.
- (2012-08-21) Henretta Crimson Tremolo Effect Pedal Demo by Fat Tone Guitars
- (2013-05-31) Henretta Engineering Crimson Tremolo by Chicago Music Exchange
- (2013-10-29) Crimson Tremolo (Henretta Engineering) by JustNickMusic
- (2017-03-11) Testing a Crimson Tremolo.
- (2017-03-11) Testing a Henretta Engineering Crimson Tremolo pedal by Henretta Engineering
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