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.
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
OLED Display Upgrade - Quasimidi 309 / Sirius / Polymorph ($98.69)
Quasimidi Sirius Mod Wheel. ($44.99)
Quasimidi - Sirius , 309 , Polymorph - Rotary Potentiometer 10KB ($8.90)
Quasimidi Sirius parts / internal connectors / cables ($10)
Quasimidi Sirius / Rave-o-lution parts - Knob (s) ($10)
Quasimidi Sirius Synthesizer last OS Firmware V2.05 EPROM ROM Update Upgrade ($16.37)
Quasimidi - Sirius , 309 , Polymorph Rotary Potentiometer for all except volume ($6.52)
1998 Quasimidi Sirius Synthesizer / Groovebox Keyboard ($1,695)
Quasimidi Sirius parts - knob cap (black) ($7.50)
Quasimidi Sirius parts - tactile switch button (s) ($10)
Quasimidi sirius ($1,300)
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 ($40.53)
Quasimidi Sirius. ($1,100)
Replacement data entry knob for Quasimidi Sirius, Rave-O-Lution 309, Raven, Quasar, Cyber-6 ($8.76)
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