ABOUT quite same features as OBXa.. but a bit more and midi.. structure: switchable 2 or 4 pole LPF (low pass filter), 8 voices (instead of modular voices expandable like the obxa) with 2 VCOs (saw,pulse,tri), syncable, arpeggiator and lfo. splitable, 120 patch memories. (de)tune each voice and let them sound unison! standard version has NO midi, later version have like the model shown here. It was made from 1983 to 1985, maybe the DX7 was a big opponent (remember: the ppl wanted "realistic" e pianos , haha) but this is the "jump" synth.. or better: the ob xa is the jump synth, this one is,too ;) but it CAN sound gooood!! this one got famous for it's pads, "brasses" etc.. oberheim did one of the best sounding and warm curtis based synth. like the xpander it has a very warm sound and very easy to use,

DETAILS allows MIDI control. unison mode! and split mode. 2 and 4 pole modes. split and dual mode. d2 VCOs and ARP'er and detunable voices (faaaat!) midi .. the coolest kit had 9 channels (retrofittable) timeline 1974 - 1986: SEM/2,4,8voice -> OB I -> obx -> obxa -> ob8 -> matrix and xpander line the ob8 added some features on "page 2" (double "click" the chord memory button) like LFO key sync for phase control / retrigger modes, LFO quantize and more - the OB8 has at leasst 3 LFOs, 2 because you have 1 LFO per layer and another one "non programmable" on the mod / wheel section (called lever @ oberheim). the ob8 is the most powerful one in the OB series (obx,oba,ob8) but also has no xmod like the obx. Hardware: (obxa/ob8) 2 CEM3360 Dual VCA 16 CEM3340 VCO 16 CEM3310 EG 16 CEM3320 VCF

SOUND wide and big pads and sweeps with soft character, one of the best you can get. leads and basses also very fat.