Oberheim OB-Xa

OB-Xa
Oberheim OB-Xa analog polyphonic synthesizer
ManufacturerOberheim
Dates1980 – 1983
PriceUS$4595 (4-voice)
US$5595 (6-voice)
US$6195 (8-voice)
Technical specifications
Polyphony4, 6 or 8 voices
TimbralityBi-timbral (keyboard split/layering)
Oscillator2 VCOs per voice
LFO1
Synthesis typeAnalog Subtractive
FilterSwitchable 12dB/oct and 24dB/oct resonant low-pass
Attenuator2 x ADSR; one for VCF, one for VCA
Aftertouch expressionNo
Velocity expressionNo
Storage memory32 or 120 patches
EffectsNone
Input/output
Keyboard61 keys
Left-hand controlPitch
Modulation
External controlOberheim system

The Oberheim OB-Xa was the second of Oberheim's OB-series polyphonic analog subtractive synthesizers, replacing the OB-X with updated features.

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