The Dynacord DRP-15 provides numerous varying effects in 100 pre-set programs and 126 freely programmable memory locations.
The Dynacord DRP 20 is really two channels constructed. with stereophonic inputs and stereophonic outputs. They allow him as a true stereo device (stereo in stereo), as a transformer balanced two-channel device (2x mono to mono) or as a normal Stereo device to use (mono in stereo).
The Dynacord DRS 78 provides a very wide range of reverb and echo effects and it produces above all true and absolutely natural reverb effects.