Classic-style 500 Series Program EQ from Lindell Lindell Audios take on the American classic EQP1 program equalizer, the PEQ-501A serves up the smooth highs and absolutely huge bottom end generations of engineers have made a cornerstone of countless legendary recordings — and you dont want to be without. Designed for the convenient 500 Series format, the PEQ-501A features switchable hardware bypass that allows for A/B accuracy, while meticulous build quality with gold-plated PCB internals delivers clean and highly professional sound. For easy, accurate settings recall, all rotary controls are stepped — a feature mastering engineers at GearNuts really appreciate.Lindell Audio PEQ-501A 500 Series 2-band Program EQ Features: Extended high-frequency range: 1KHz, 1.5KHz, 2KHz, 3KHz, 4KHz, 5KHz, 8KHz, 10KHz, 12KHz, 14KHz, 16KHz Extended low-frequency range: 20Hz, 30Hz, 60Hz, 100Hz, 150Hz Transformer-balanced output Designed around vintage 1731 op-amp Hand-wound inductor Stepped rotary controls Gold-plated PCB internals Real hardware bypass Compatible with 500