Offered this nice Decent Boss Reverb dating from the 1990's. In good and working condition and very good reverb sounds. Works on 220 / 240 volts so no adapter needed. Below some specifications, watch the photo's to see te details. The RV-1000 uses a 31.25 kHz sampling frequency and a 16 bit DSP (Digital Signal Processing) chip to generate 16 types of reverb and delay. The mode switch has the following 16 settings: Small Room 1 Small Room 2 Mid Room 1 Mid Room 2 Mid Hall 1 Mid Hall 2 Large Hall 1 Large Hall 2 Cathedral Plate 1 Plate 2 Gate Reverb 1 Gate Reverb 2 Reverse Gate Delay 1 Delay 2 The Decay/Gate knob adjusts the reverberation time for the 11 first settings and the gate time for the gate reverbs.