The JOYO D55 is a compressor pedal. It is intended for controlling dynamics and evening out signal level.
Key identified features include true-bypass switching.
- Brand: JOYO
- Model: D55
- Product type: Compressor Pedals
- Features: True Bypass















This is a New JOYO D55 Compressor Pedal from Joyo, listed in Compressor Pedals on Just Pedals. Read More below.
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Compression reduces the difference between louder and quieter parts of the signal. It can restrain peaks, lift decaying notes and make picking feel more even, but strong settings also change the attack and add audible sustain or pumping. Threshold, ratio, attack, release and blend determine when gain reduction begins, how firmly it acts and how much natural transient detail remains.
Connects input directly to output through mechanical or relay switching when the effect is off, removing the active circuit from the audio path. It avoids buffer colour but leaves cable capacitance and switching design to influence high-frequency loss and possible switching noise.