Yamaha DR100 is a compact, half-rack sized stereo type digital reverb offering four reverb programs and a 3 band equalizer. Due to digital processing the four integrated reverb programs offer a natural, high-grade reverb sound. Preset reverb programs are called up by one-touch operation. A MIX control allows exact balance adjustments between source sound and effect sound. A 3-band equalizer permits minute response adjustments.