VOL adjusts the saturation level, LVL adjusts the pedal output level, LO adjusts the low frequencies, and HI adjusts the high frequencies.
With the Double, you will find the warm and characteristic sound of DUMBLE tube amps generated by the Jfet transistors used in this pedal.100% analog circuit.
The Double will pleasantly surprise you with its signal / noise ratio and its dynamics will transcribe all your playing nuances.
HAMMOND1590Baluminumcasingensuresthe shielding of theelectronic card.