IO Instruments Themisto

Eurorack Module

  • Analogue VCO
  • Outputs for sine, triangle, sawtooth (rising and falling), square (with adjustable pulse width)
  • Square wave sub-oscillator with switchable phase position
  • Frequency range: 10 - 13,0000 Hz
  • Switchable LFO mode: 0.5 - 6000 Hz
  • CV inputs for linear and exponential FM, each with attenuators
  • CV input for pulse width modulation
  • Oscillator sync input
  • Buffered thru outputs for pitch CV and sync gate
  • Current consumption: 60mA (+12V) / 60mA (-12V)
  • Width: 12 HP

Further Information

Analog Yes
Digital No
Width 12 TE / HP
variants IO Instruments
7 Customer Ratings
  • 5
  • 4
  • 3
  • 2
  • 1
4.4 /5
  • handling
  • features
  • quality
Total
handling
features
quality
Unbeatable at the price
Imnothere, 09.10.2020
I couldn't find any other Eurorack VCO in this price range that offered so many features at the price. The obvious competitors are the Doepfer A110-1 and 110-2 but the Themisto wins out with its suboctave output, sine output and linear FM with attenuator.

I don't have proper test equipment, but as far as I can tell the tracking is very good over the audio range and the waveforms look precise - if you're looking for analogue "quirkiness" and "character" then you may have to add your own.

There are two jumpers on the back to enable v/oct and gate from the Eurorack bus.

Cons: The knobs feel a bit wobbly (even alongside low-cost modules from Doepfer and Behringer) and - although the fine tune knob makes it easy to tune accurately - the slightest touch on the coarse-tune knob knocks it off tune (I'm tempted to just remove the knob). That's why it doesn't get a clean 5 stars.

Documentation is minimal - you know how to use a VCO, right?

Being picky, an octave switch would have been a nice addition, and I'd prefer a layout with controls at the top and jacks at the bottom...
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de Original review (Show translation)
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Total
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features
quality
Hochpräzisions VCO zum Budget Preis?
Penishead, 16.06.2020
Ein VCO liefert die Grundwellenformen, um Klänge zu erzeugen. Je mehr Wellenformen umso besser, deswegen hat man hier bei diesem Modul den größten Teil an Wellenformen im Zugriff und das auf nur 16TE. Jeder Wellenformausgang liefert ein hohe Qualität an Sound, und das so souverän, dass man hier schon behaupten kann: IO Instruments hat höchsten Wert auf gute Bauteile gelegt. Die angepriesenen Fakten werden gehalten. Angemerkt, das ist ein analoges Modul. Der Sinus klingt wie Butter, Saw kommt gut knackig und die Square Derivate machen alle ordentlichen Druck. In den oberen Tönen bleibt auch alles stabil und es dringen keine Artefakte in die Ohren. Alles bleibt differenziert. Hier empfehle ich jetzt das Youtube Video vom IO Instruments. Die Bedienung geht flott von der Hand, die Aufteilung der Ein- und Ausgänge ist funktional ausgeführt – so ist das Bedienpanel in der Mitte immer frei und gut einzustellen. Die Potis sind schön leichtgängig, aber haben noch etwas Grip. Ein aus Versehen Verstellen ist nicht möglich. Super nützlich sind die gepufferten Ausgänge und das natürlich alles gleichzeitig abgezapft werden kann.
Fantastischer Einstieg einer kleinen Manufaktur in den Eurorack Bereich. Der Themisto ist ein rundum gelungener VCO mit edlem Flair, sowohl klanglich als auch optisch. Es beschleicht einen das Gefühl, dass man kein besseres VCO Modul finden kann und zwar auch nicht weit über der angesetzen Preismarke von 149.- EUR. Hier sind alle wichtigen Klänge und noch mehr auf 12TE versammelt. Unglaublich vielseitig und klangkräftig! Zusätzlich wird man glücklich mit dem LFO Modus. Die liebevolle Verpackung will hier auch nochmal erwähnt werden.
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se Original review (Show translation)
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Fantastiskt ljud
drpeel, 13.03.2020
En mycket prisvärd VCO med fantastiskt ljud och med enkelt gränssnitt. Lätt att integrera i sitt modulära system.
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de Original review (Show translation)
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So muss das aussehen...ein Osc Modul
TinyVince, 19.07.2020
Ein wirklich toller OSC. Wie bei alle IO Modulen ist das Frontpanel eine Augenweide.Die Haptik mit den geriffelten,schräg nach hinten breiter werdenden farbigen Kappen in sinnvoller Anordnung machen die Teile perfekt. Sicher könnte man ein Modul mit diesen Features noch kleiner gestalten aber die richtige Grösse bringt wesentlich mehr Spass am Bedienen.
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Show variations of this product
IO Instruments Themisto
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IO Instruments Themisto
to the product
152 €

Eurorack Module Analogue VCO, Outputs for sine, triangle, sawtooth (rising and falling), square (with adjustable pulse width), Square wave sub-oscillator with switchable phase position, Frequency...

Dreadbox Hysteria
(13)
Dreadbox Hysteria

Eurorack module Analogue VCO, Frequency range from 16 to 32,000 Hz, Quantiser with two modes, Hard sync input, Separate pulse output, Waveform fully adjustable, CV input for pulse width modulation...

152 €
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