GP-50
The Valeton GP-50 is a compact dual-footswitch multi-effects processor for guitar, offering over 100 modelled effects — drive, amp, cab, EQ, modulation, delay and reverb, up to nine at once — with SnapTone Neural Amp Modeler support and IR loading. It carries 100 patch slots (55 factory presets, 45 user), and works as a USB audio interface, looper, drum machine and tuner. MIDI arrives over TRS and USB.
With MDM: the GP-50 responds to standard Program Change, so MDM controls it by patch straight away. A ready-made CSV index of its 55 factory presets is available on the CSV import page — import it and your Pads carry the real patch names. The GP-50’s patch data uses a proprietary Valeton SysEx format, so direct auto-import isn’t supported yet, but nothing on the control side depends on it.