instruō specialist synthesizers i-ō47: multimode resonator/filter price : $355.00

i-ō47 multimode resonator/filter is a modern take on a vintage circuit design inspired by the classic 1047 module of the arp2500. it has been designed with some extra features and quirks built in.

the internal vca's are a new hybrid design of matched transistors and precision op-amps.

with cv controllable centre frequency, resonance/q and notch offset along side fm, strike and a complex dual input with wave shaping limiter, the i-ō47 is truly a filter for all occasions.

features:
centre frequency range 16hz to 16khz
1v/octave, coarse and fine frequency controls
fm input with attenuverter
low pass 12 db/octave
high pass 12 db/octave
band pass 6 - 12 db/octave dependent on q
notch with variable offset -/+ 2 octaves
input with gain control
inverted input with resonance dependent gain
strike input for pinging the filter
feedback switch which adds bp to the input for enhances resonance
Limiter based on tanh wave shaper which affects primary input (post gain fader)

specifications:
14hp
depth: 27mm
+12v: 50ma, -12v: 50ma

download the users manual here and the quickstart guide here.