Item: SYN0008324-000
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INSTRUO I-o47 Product Image
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The analogue multimode filter I-o47 is based on the filter of the ARP 2500 and has been extended and improved in some places.  All product info

£ 307.00
incl. VAT, incl. Shipping Costs
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Product information - Instruo I-o47

Multimode filter

Instruo I-o47 at a glance:

  • Multimode Filter
  • 18dB lowpass
  • 18dB highpass
  • 6-18dB Bandpass (depending on resonance)
  • Notch with variable Offset (+/- 2 octaves)
  • Cutoff with fine control
  • Integrated limiter
  • Feedback circuit
  • Strike input for pinging the filter
  • CV inputs for tracking, FM, notch & resonance

The I-o47from Instruo is an analog Multimode filter, which is based on the classic 1047 from ARP 2500 and has been expanded and improved in several points. The module impresses with four filter characteristics that can be tapped in parallel, which sound clean and have a pleasant resonance behavior. Lowpass and highpass have a slope of 18dB, the bandpass varies between 6 and 18 dB, which depends on the set resonance in this circuit. Notch is with a variable Offset in the range of +/- two octaves which is also sufficient for phaser-like sounds. The audio input turns out a bit more extensive than usual. The upper input can be influenced by the gain control and can be limited with Limit if needed, so there will hardly be any overloads of the filter circuit. The level of the signal applied to the inverted input is inversely proportional to the level of the resonance parameter. As resonance increases, the signal applied to this input decreases. To control the filter there are four CV inputs for tracking, FM (with attenuverter), notch & resonance (Q). The Strike input pings the filter, strictly speaking an incoming gate or trigger signal sets the resonance to maximum.

Instruo Io47

Instruo I-ō47 Eurorack Filter Module - In Depth Demo


  • Manufacturer: Instruo
  • TE / HP: 14
  • Depth (mm): 27
  • + 12 V (mA): 50
  • - 12 V (mA): 50
  • Lowpass: Yes
  • Bandpass: Yes
  • Highpass: Yes
  • Notch: Yes
INSTRUO I-o47 Product ImageINSTRUO I-o47
£ 307.00
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