■The dd8 is a budget portable drum pad that can works on PSU or internal batteries.
It features a basic numeric display and 4 pads with adjustable sensitivity, numeric display and internal mono speakers (i f you want to know: 10 cm 8 Ohm).  It originally came with 2 plastic sticks.

■Some nice features like syncronized Rolls option. 
No midi, no sync

■Auto rhythm option with 100 presets

■ often used for old school circuit bending.

■Year Released: 1993
Number of Pads: 4 touch sensitive
Polyphony: 8 notes max
ROM Size: 52 sounds
rhythm styles: 100

■Connections:
PSU input (10-12V positive center)
headphones/aux out

■Weight: 1.3 kg
Dimensions: 420 mm x 261 mm x 113 mm

■ USER MANUAL DOWNLOAD
■ NO SERVICE MANUAL 
We do miss service manual and schematics, if you want to share it here for free, just contact us, we will be happy to make it available for everyone.