Studio Electronics ToneStar Synth Voice Eurorack Module
The Studio Electronics TONESTAR is a Eurorack module loosely styled on the classic ARP2600.
- Complete synth voice in a Eurorack module
- Styled as a single oscillator ARP2600
- 21 jack points
- 32HP Eurorack format module
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TONESTAR is an ARP® 2600-styled synth voice, 31 years in the shaping, pre-patched like Pearlman's prized 2600, and fully 'outs to outs' modular. Connect CV / gate and twist 'n' switch, or pull its tones and voltages apart one 3.5mm cord at a time. 26 knobs, 7 switches, and 21 jacks make for complex and satisfying signal flow, colour and collisions.
Caswell Knowledge (circuit designer):
'The VCO is the same affair as the Oscillation, the Boomstar, and the Omega. It's kind of a combination of Arp®, Oberheim® and Moog® circuits (sort of a greatest hits), time-tested, very stable—very good tracking over a very large range. certain parts have to be hand selected to achieve that level of performance.
Envelope FYI: The Tonestar Sustain control replicates the behaviour of the 2600 and Odyssey: after the initial Decay, it continues to move (sink) very slowly, adding a little extra texture to the sound. It's technically a flaw, but after digging out my Odyssey, it is for sure a desirable 'quirk', and the perfect companion to the 4072 filter.
Another bit of fun: the LFO is voltage controlled, so you can envelope, LFO, or otherwise modulate both the rate and the depth. The ADSR amount is also voltage controlled, so it can be manipulated by MIDI dynamics, MIDI volume, an LFO, etc. Greg [St. Regis] has decreed that anything must be patchable to anything, so some technically wrong patchings (for example pulse wave out to ADSR out) may often do unexpectedly interesting and pleasing things.
The Tonestar was Greg's concept, but as I understood it, the goal was a single oscillator, 2600 VCF, pre-patched and yet fully modular classic synth voice, at a specific size, wielding every trick we could cram in. Main use would be as a go-to bassline/lead tool, or a premium quality, entry-level, complete synth module (sans case and power) for root-to-leaf sound design and multiform electronic illumination.'
SE TONESTAR 2600 Specifications
PCB Mounting Scheme: Through-hole
Filter: Discrete, voltage controlled, 24/db/oct cascaded transconductance low-pass filter, employing six pairs of hand-matched transistors
Depth: 35mm including connectors
Power Usage: TBC