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 ROLAND DR55 Drummachine/Module + simple sequencer

Roland DR55 synthesizer
Boss DR55
click image to enlarge - Bild klicken zum vergroessern
other ROLAND gear..
Built 1979
Type: drum
Hybrid: no
4 Voice / Stimmen
4x Multitimbral
presets Memory / Speicher
Value / Wert in 2017 ca. 120 (rare)
Synthesis: subtractive

OSC Features analog drums
Wave Shapes 4 drums
4 OSCs
0 Filter
0 LFOs
0 Envelope Generators

NO Control / Triggering
0 Keys with no

Arpeggiator no
Sequencer simple sequencer
(ID 475)
  deutsch - german
ABOUT preset Drumcomputer in early TR- kind of sound design.. hihats can be set (16, 8 etc.), it is originally a BOSS DR55 but for me there is no difference between Boss and Roland..
ABOUT preset Drummachine mit TR-ähnlichen analogen Sounds, 4 Stück, die HiHats kann man einstellen (16tel,8tel..)
DETAILS 4 instruments, all analogue
DETAILS 4 Instrumente, alle analog,
SOUND nice old school electronica
SOUND nette alte electronik

ROLAND or Boss, Edirol formerly Ace, Acetone
roland synth manufacturer logo - Hersteller Logo

Roland was founded in 1972 by Ikutaro Kakehasi, Japan (prior companies: ace (drum machines and electronic organs and kakehashi musen), first synthesizer: 1972 - Mr. Kakehashis biography is available as a book from Robert Olsen.
- DIN SYNC: same as tb303, TR606, TR707 (also with MIDI)
Pins - Roland DIN sync:
from left to right: PIN 3 tempo clock, PIN 5 fill in, PIN 2 ground, (middle pin!), PIN 4 reset & start, PIN 1 start/stop

Official Intl. Site :

Roland wurde 1972 von Ikutakro Kakehashi gegründet, nachdem er Ace aufgebaut hatte. Von Kakehashi gibt es ein Buch vom PPV Verlag.

Offizielle Site (D)


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