Synths ⇝ Quasimidi ⇝ Quasimidi Sirius

The Sirius uses a waveform-ROM-based synthesis method called DTE synthesis, which literally means "difficult to explain". It has a built-in 11-channel vocoder with 16 user-programmable memories.

It also has a 16-song sequencer with 142 ROM patterns and 100 user-programmable patterns.

Specifications

Year Released: 1998

Keyboard: 49 keys with velocity

Polyphony: 28 notes

Multitimbral: 7 parts

Preset Patches: 672

User Patches: 480

User Drum Kits: 20

ROM: 128 instrument waveforms, 365 drum waveforms

Effects: 2 independent effects processors with reverb, chorus, delay

Arpeggiator: 16 presets, 9 user-programmable

Screen: 16 x 2 character backlit LCD

Outputs: One 1/4" stereo pair

Power Consumption: 10.5V, 1.5A

Dimensions: 735 mm x 375 mm x 115 mm

MIDI Connections: In, Out, Thru

User Demo Videos

Rating

File Downloads

Quasimidi Sirius Manual

Items for Sale on Reverb

OLED Display Upgrade - Quasimidi 309 / Sirius / Polymorph ($103.69)

Quasimidi Sirius parts - knob cap (black) ($7.50)

Vintage Quasimidi Sirius Groove-Synth (1997) - Working Screen / Unserviced with Vocoder Mic ($822.58)

Quasimidi sirius ($1,500)

Quasimidi Sirius ($1,024.68)

Quasimidi - Sirius , 309 , Polymorph - Rotary Potentiometer 10KB ($8.90)

Quasimidi Sirius 1998 ($964.41)

Quasimidi Sirius Mod Wheel. ($44.99)

Quasimidi Sirius Synthesizer last OS Firmware V2.05 EPROM ROM Update Upgrade ($20.43)

Quasimidi Sirius parts - tactile switch button (s) ($10)

Quasimidi Sirius / Rave-o-lution parts - Knob (s) ($10)

Quasimidi Sirius parts / internal connectors / cables ($10)

Quasimidi - Sirius , 309 , Polymorph Rotary Potentiometer for all except volume ($7.17)

Quasimidi Sirius rotary encoder data wheel Groovebox Synthesizer ($14.41)

Quasimidi Sirius ($1,500)

Quasimidi Rave-O-Lution parts - knob cap (grey) ($12.50)

Quasimidi Rave-O-Lution parts - knob cap (blue) ($12.50)

Custom Metal Knob Set Upgrade for Quasimidi Sirius ($44.60)

Quasimidi Sirius. ($1,100)

Replacement data entry knob for Quasimidi Sirius, Rave-O-Lution 309, Raven, Quasar, Cyber-6 ($9.64)

2 replacement knobs for Quasimidi Polymorph Sirius 309 ($9.64)