Drum Machines ⇝ Roland ⇝ Roland Boss DR-550

The DR-550 was updated with a larger sound set as the Boss DR-550 MkII. It can store up to 8 songs with a maximum of 160 patterns per song.

Specifications

Year Released: 1990

Number of Pads: 12

Polyphony: 12 notes

Preset Patterns: 64

User Patterns: 64

Tempo Range: 40 - 250 BPM

ROM Size: 48 sounds at 16-bit resolution

Power Consumption: 9v, 90mA or 6 x AA batteries

Weight: 0.51 kg including batteries

Dimensions: 188 mm x 157 mm x 41 mm

User Demo Videos

Rating

File Downloads

Boss DR-550 Manual

Boss DR-550 Service Notes

Items for Sale on Reverb

Boss DR-550 Dr. Rhythm (s/n CB52506, Made in Japan) ($106.43)

Boss DR-550 MkII Dr. Rhythm 1992-1999 - Black ($98.28)

Boss DR-550 Dr. Rhythm 1989-1991 - Black ($130.32)

Boss DR-550 Dr. Rhythm Drum Machine 1990 - Black ($85.18)

Boss DR-550 Drum Machine ($99.99)

Set of two Boss DR-550 Dr. Rhythm 1989-1991 - Black ($108.60)

Boss DR-550 MkII Dr. Rhythm ($127)

Boss DR-550 MkII 2 Two Zwei Deux Twee With X0X Sounds ($71.68)

Boss DR-550 "Dr. Rhythm" Drum Machine ($90)

Boss DR-550 Dr. Rhythm Main Board NOS ($53.22)

Boss DR-550 Dr. Rhythm 1989-1991 - Black ($248.70)

Boss DR-550 Dr. Rhythm 1989-1991 - Black ($108.60)

Boss DR-550 Dr. Rhythm 1989-1991 - Black ($65)

(Pre-Owned) Boss Dr. Rhythm DR-550 Drum Machine ($79.99)

Boss DR-550mkII Drum Machine ($104.18)

Boss DR-550 ($162.90)

Boss DR-550 MkII Dr. Rhythm 1992-1999 - Black ($140.10)

Boss Dr. Rhythm 550 MKII 1990 - Black ($300)

Boss Dr. Rhythm DR-550 Drum Machine DR550 Doctor Beat U240458 ($89)

BOSS Dr. Rhythm DR-550 Drum Machine with Box! R121 ($129.99)

Boss DR-550 parts - tempo LED - part no. 15029324 ($5)

Boss DR-550 parts - 12MHz crystal - part no. 15299128 ($10)

Owner's Manual for Boss Dr. Rhythm DR-550 1984 ($15.72)

Boss DR-550 parts - flex cable - part no. 23485252 ($5)

Boss DR-550 parts - volume potentiometer - part no. 13279966 ($15)

Boss DR-550 parts - power switch - part no. 13159168 ($10)

Boss DR-550 parts - tape save/load socket - part no. 13449428 ($10)

BOSS - DR-550 - Dr. Rhythm Drum Machine w/ Manuals, PSU - x7357 - USED ($79.99)

Power Supply Replacement for Boss Dr-550 Adapter Uk 9V ($10.90)

Power Supply Replacement for Boss Dr-550 Mkii Adapter Uk 9V ($10.90)

Boss DR-550mkII ($205.26)

Power Supply, 9-volt DC, Roland TB-303, TR-505, TR-606, TR-626, MC-202, SH-101, A-500S, SBX-1, BOSS ($21.72)