Joyo R-Series R-03 “Uzi” — High-Gain Distortion, True Bypass, Bias-Switchable Voice

From tight, modern crunch to saturated lead—amp-in-a-box tones with flexible EQ in a compact chassis.
Designed for heavy, harmonically rich distortion, the Uzi adds a BIAS control that flips the voicing between “American” and “British” grind. You get Gain/Volume with auto-leveling behavior, a 3-band EQ, and ambient chassis LEDs with Sync / Always / Off modes. Runs on standard 9V DC. True bypass keeps your dry tone intact.
 
Condition: Excellent. Light cosmetic signs only.
Includes: Pedal only (no box, manual, or power supply)
 
Features
High-gain distortion with BIAS knob (American ↔ British flavor)
Controls: Volume, Gain, Low, Mid, High, Bias; rear LED mode toggle
True bypass; 9V DC (center-negative), ~20 mA; no battery compartment
Compact metal enclosure with ambient LED lighting options
 
“Tight, modern gain with real note clarity—flip the Bias for American bite or British roar without the fizz.”
 
FAQs
Q: Is it true bypass?
A: Yes—true bypass design minimizes tone loss.
Q: What power does it need?
A: Standard 9V DC, center-negative; rated draw about 20 mA; no battery slot.
Q: What does the BIAS control do?
A: It shifts the voicing between American and British-style distortion and alters saturation/feel.
Q: Do the case lights stay on?
A: You can choose Sync / Always / Off on the rear toggle.