ART's 2-channel tube parametric equalizer, adjustable from low to high frequencies. It provides a warm tone and a strong effect. Operation has been confirmed, and there are no scratchy noises or malfunctions. There is a slight bend in the LO-MID knob of the 2ch, but there is no problem with the operation. - Model: DUAL TUBE EQ - Type: Parametric Equalizer - Number of channels: 2 channels - Functions: Bypass, Mono, Clip Indicator - Adjustable frequencies: Low, Mid, High - Output: Output adjustment knob - Gain adjustment: Gain knob - Design: Rack mount design Thank you for viewing.