Joyo JF-13 AC Tone Vintage VINTAGE Tube Amp Pedal, Analog Circuit, Bypass Effect. You can adjust the level with DRIVE and apply the effect with VOICE, allowing for adjustments from a clean sound to a fat, thick drive. Adjustment is possible with the three knobs: LOW, MID, and HIGH, creating a sound reminiscent of a tube amp, like a direct-amp sound. With this AC Tone, you can create clean and crunch tones, and by adding distortion-based effects, you can develop a wide range of thick sounds. It has a true bypass structure, and the quality of the switches and other components has been improved, resulting in a relatively low-noise design. • Recommended for creating British sounds like a VOX AC30. You can adjust the level with DRIVE and apply edge with VOICE, creating a direct-amp sound like that of a tube amp. With this AC Tone, you can create clean and crunch tones, and by adding distortion-based effects, you can develop a wide range of thick sounds.