4 Operator FM

‘Akemie’s Castle’ is a dual voltage controlled oscillator with authentic 4 Operator digital FM using ‘new-old-stock’ Yamaha IC’s for audio signal generation.

Each of the 4 operators feature independent waveform selection, frequency multiplier and level control via direct panel operation and voltage control. Operators can be combined in various ways across both oscillators, which together with independent feedback control on each VCO, offer an extremely wide palette of sounds.

Oscillator A also features a chord mode providing a range of up to 5 voice chords and voltage controlled inversion.


Authentic digital FM sound for Eurorack with never before seen levels of control
Dual independent and combine-able outputs
4 Operator / 6 Algorithm / 8 Waveform / Feedback FM
Rich Chord mode producing up to 5 voice chords with inversion also
Reverse polarity protection.
Skiff friendly.
Designed and Made in the UK


  • 120 mA +12V
  • 120 mA -12V
  • 0 mA 5V
  • 25 mm deep
  • Ø 4.58 (12 Votes) Average Rating

This Module is currently available.

38 HP Oscillator
submitted Mar 31st 2015, 17:15 by seank | last Change Dec 15th 2017, 16:13 by davidu

Date Region Description Price Seller
EUExcellent condition - original box and receipt included - message for photos....£399.99louiscv View
EUThe module is in perfect condition. Under warranty till october 2019. I will...€470,00MNDSRGR View
EUThe overall condition of this ALM Busy Circuits Akemie's Castle is like new. ...€500,00michael_dop View
EUThe overall condition of this *ALM Busy Circuits Akemie's Castle* is *li...€410,00musdj View

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