Some cosmetic wear. Great BOSS sampler and delay unit from 80s :)

The best trick is to sample some percussion and control it via key input with high resonant synth sound -> instant early Autechre -style glitch percussive sounds :) They even named one song after this (from Tri Repetae), Rsdio

Key Specifications:

• Type: Digital Sampler / Delay
• Series: Micro Rack
• Released: 1985/1986
• Resolution: 12-bit A/D/A Converter
• Delay Time: 2ms to 2000ms (2 seconds)
• Frequency Response (Sampler/Delay): 20Hz - 7kHz
• Pitch Control: Tracks keyboard audio (CV/Gate) for octave shifts.
• Audio I/O: Mono In/Out
• Controls: Footswitch, Pad Input, Pitch Tracking
• Power: 9V DC (PSA adaptor)
• Dimensions: 218mm (W) x 44mm (H) x 169mm (D)
• Weight: 1 kg (2.2 lbs) 

• Sampler Mode: Records short audio loops with pitch and dynamics control from a connected synth.
• Delay Mode: Standard digital delay with feedback for repeats.
• Pitch Tracking: Allows you to play samples like an instrument, shifting pitch with your keyboard.
• External Control: Trigger input for rhythm machines or pads.