RCK-517 is a standard 500 series module single channel FET compressor/limiter, RCK-517 provides the sonic essence of classic FET circuit design, this 500 series module provides you with 4 compression ratios of classic music, From a mild 4:1 to a heavy 20:1 compression ratio, some have also undergone some improvements, by changing the speed of the attack time and release time knob time, divided into fast, medium and slow three gears.

    The RCK-517 compressor uses a steel core output transformer imported from Japan, which is especially important for the sound of the device, helping to make the sound clear and delicate, delivering a powerful sound with a retro feel.