Octave Mandolin Célestine
Jupiter 4 Compuphonic
The Roland Jupiter-4 (JP-4) was an analog synthesizer designed and manufactured by Roland from 1978 to 1981. It was the company's first polyphonic synthesizer, and was known to have been the first synthesizer to provide digital controls to its analog circuits (under the term “Compuphonic” by Roland), allowing notable new functions such as programmable memories (digital recording of “patches”) and greater flexibility in the assignment of synthesized voices by the oscillators. It was sold for $ 2,895, so much cheaper than polyphonic synthesizers from competing brands of the same era (such as the Sequential Circuit Prophet 5 or the Oberheim OB X). Yet it was not as popular and remained less distributed than these competing machines. This disaffection was completely reversed when its successor model, the very popular Jupiter 8, was released on the market.
Analogical tank from the 1978s with which we quickly spend hours on bass sounds, with 2 synchronizable VCOs. Rare with less than 650 copies, there is a grey version OB-1A. 1750 copies in total. The 6-page Oberheim OB-1 manual is typewritten (true, it can be found on the Internet), but it is not really needed in sound design, except perhaps to position the buttons to be able to record a sound on the 8 available memories (which store the positions of 33 potentiometers or buttons, almost all of them), as this cannot be invented. The OB-1 sends heavy, even if its keyboard is very cheap and makes a hell of a noise. In any case, it can be ordered with conventional CV-IN 1 volt per octave. The pinball pitch is huge. It is recommended in the instructions for use to wait 5 minutes for the circuits to be stabilized. This is clearly another way to conceive a sound, with fabulous surprises in the percussive basses, noise, boat engine noises, factory purring. Finally, no need to look for a MIDI interface on the OB-1. Source: vintage stock copy tested, service manual.
The RozzBox V2 Poly Synth with tube filter is a 5-voice polyphonic synthesizer with digital oscillators, digital and analog filters on each voice, and one additional all tube filter.In addition to the the classic design of a 4-oscillator polysynth with analog filters, the RozzBox features some functions that can’t be found on any other synthesizer, such as the Hacker, the chaotic filter mode, and switchable aliasing of the oscillators.