Boss GKCAD GK AD Converter DJ Controller You can use MIDI and

You can use MIDI and USB for controllers or storage devices

The DB 115 is versatile enough to pair with either the DB 210 or DB 410 for a very powerful full range rig or as a great standalone cabinet

allowing for precise tonal shaping with subtle tweaks

550 stands for its maximum delay time in milliseconds and that's the same spec as the classic Deluxe Memory Man

Boss GKCAD GK AD Converter DJ Controller You can use MIDI andThe latest BOSS guitar synthesizer products feature the Serial GK digital interface, a newly developed connection method that delivers evolved performance over the analog 13 pin GK interface used in earlier BOSS and Roland guitar synth and modeling products. The GKC AD GK Converter allows you to drive the Serial GK input on the GM 800 Guitar Synthesizer from a Roland GK 3 or GK 3B Divided Pickup or an instrument equipped with a 13 pin GK output.