Oakley Sound Systems Modular Synthesizer Projects
As of Febraury 2026, Oakley Modular projects are now distributed and supported by synthCube
- News Specials and Updates
Friends of Oakley Sound Systems and Tony Allgood– we are delighted to announce that we have reached an agreement with Tony to support and distribute his modular synthesizer projects beginning in March 2026. This new website (oakleymodular.com) is dedicated to the Oakley modular projects, and will remain separate and distinct from Tony’s main site (oakleysound.com)…
Oakley Eurorack Projects
Oakley Euro MOSPhaser
The 6HP Oakley Sound MOS Phaser is a six-stage, 1970s-inspired phaser featuring five variable all-pass filter stages that utilize a single 4009UBM CMOS IC for simplified, matched-component construction [1]. It features an internal triangle…
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Oakley Euro Discrete Ladder Filter (DLF)
The Oakley Discrete Ladder Filter (DLF) is my reworking of the classic 1960’s low pass filter module. Inspired by the circuits of the 904A filter and CP3 mixer, the DLF combines them into one excellent sounding 6HP wide module. The a…
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Oakley Euro Croglin VC Dual Filter
The 10HP wide Oakley Croglin Voltage Controlled Filter (VCF) is based around two low noise ‘Sallen-Key’ filter circuits that operate either together or against each other. The cut off frequency of both filters, named A and B, c…
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Oakley Euro COTA – VC ‘Cascaded OTA’ Filter
This is a 10HP wide four pole multimode filter module capable of -24dB/octave low pass, -12dB/octave low pass and +/-6dB/octave bandpass outputs simultaneously. The filter core is based on four identical cascaded current controlled integra…
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Oakley Euro Sequencer
Oakley Euro Sequencer NEW LOWER PRICES- 2026 Build documentation here: https://www.oakleysound.com/Sequencer%20Builder's%20Guide.pdf User Guide here: https://www.oakleysound.com/Sequencer%20User%20Manual.pdf Aluminum panel…
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Oakley Euro Dual VCO V2 (Silver or Black)
The 14HP wide Oakley Dual VCO, or DVCO, is two traditional sawtooth core voltage controlled oscillators in one module sharing a single common 1V/octave input. Each oscillator features a sawtooth (falling ramp) and variable width pulse wave…
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Oakley Euro ADSR (Envelope)
The 6HP wide Oakley Envelope is an easy to use four stage envelope generator with switchable looping mode. The ADSR is operated by a traditional gate signal, but can also be triggered by slow rising CVs too due to the built in schmitt trig…
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Oakley Euro Journeyman Classic Diode Ring Filter
The Journeyman is a 6HP, four-pole, dual-mode filter module featuring a unique, non-linear discrete circuit inspired by 1970s Japanese Traveller filters [1]. It offers switchable -12dB/octave low-pass or -6dB/octave high-pass responses, wi…
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Oakley Euro Classic VCA (SMT 6HP)
"You can NEVER have too many VCAs!" A widely recognized mantra across the modular syntheszier community-- and a bit of history, the term was first coined by Oakley Sound founder Tony Allgood many years ago-- when the Oakely Classic VCA was…
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Oakley Euro SVF (State Variable Filter)
The Oakley SVF is a 10HP wide two stage multimode filter module capable of high pass, low pass, band pass and notch output modes. All four outputs are available simultaneously. The module is a stand alone version of the filter in the Oakle…
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Oakley Euro Multimix
The 6HP wide Oakley Sound Eurorack Multimix is highly useful mixer module that can be used to process both control voltages (CVs) and audio. It is based on the original ‘Stooge’ version of the Oakley Multimix for 5U. The unit f…
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Oakley Euro HVM Human Voice Module '185' and '220' Black Versions
The 8HP wide Oakley Sound Human Voice Module (HVM) is an all analogue audio signal modification unit that replicates some of the sounds made from a classic electronic keyboard first seen and heard in 1979. The VP-330 is often thought of as…
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Analogue Sequencer Oakley Modular Euro
The Oakley Sound Sequencer is a 50HP wide eurorack analogue sequencer with a maximum of eight steps and multistage loading capability. Each step can be selected to reset the sequence back to the start, or to skip and go straight to the nex…
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Classic VCA (Thru-Hole 8HP) Oakley Modular Euro
This is a high quality single channel voltage controlled amplifier designed around an all discrete transistor core. It is based on the 4019 sub-module which is found in the classic 2600 semi-modular synthesiser. Two signal inputs are provi…
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Deep Equinoxe Phaser Oakley Modular 5U (MOTM)
From the manufacturer: This is an upgrade of our four stage OTA based phaser design, the Oakley Equinoxe. The original Equinoxe is a wonderfully lush and smooth effect and similar in sound to the phaser used by Jean Michel Jarre on th…
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Human Voice HVM Oakley Modular 5U MOTM
The Oakley Sound HVM is an all-analogue audio signal modification device that replicates some of the sounds made from a classic electronic keyboard first seen and heard in 1979. The VP-330 is often thought of as a string synthesiser and vo…
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Discontinuity Oakley Modular 5U MOTM
NEW LOWER PRICES FOR 2026 Oakley Discontinuity Shaper, MOTM, 2U Full kit includes everything you need-- 3 PCB set, 2U MOTM panel, all parts individually bagged and labelled Internally the module is arranged as five sections connected in se…
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VC-LFO Oakley Modular 5U MOTM
Oakley VC LFO MOTM format, 1U kits are available in the v3.1 issue pcb From Oakley: "This is a versatile yet easy to use voltage controlled low frequency oscillator module that can also be used as an audio VCO over a u…
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VCO Oakley Modular 5U MOTM
An excellent sounding and popular VCO (voltage controlled oscillator) module. The design was originally inspired by the classic sound of the Mini's VCOs with the central core of the oscillator being somewhat similar. However, a …
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Overdrive II Oakley Modular 5U MOTM
Oakley Overdrive II IMPORTANT: The synthcube kit is complete EXCEPT it does not include the PCBs- these have to be ordered from Oakley direct: https://www.oakleysound.com/overdrv.htm The Oakley Overdrive-II features two d…
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MIDI DAC Oakley Modular 5U MOTM
oakley midi dac, 2U wide MOTM format The synthCube kits for the MIDI-DAC do NOT include PCBs or PICs— These are no longer available.
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VCO Controller Oakley Modular 5U MOTM
Oakley VCO Controller Issue 1 PCB + SOCK8 PCB As of 2026 synthCube will begin supporting and distributing Oakley Modular projects. As of 15 Febraury 2026 we have confirmed and updated the BOM and reduced the prices for the PCB set, kit and…
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Discrete Ladder Filter Oakley Modular 5U MOTM
Oakley Discrete Ladder Filter MOTM MOTM 2U panel “The Oakley discrete ladder filter (DLF) is my reworking of the classic 1960's low pass filter module using the circuits from the 904A filter and CP3 mixer and combini…
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Triple VCA Oakley Modular 5U MOTM
Oakley Triple VCA MOTM format, 2U panel by bridechamber
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Equinoxe (VC Phaser) Oakley Modular 5U MOTM
Oakley Equinoxe (VC Phaser) MOTM 1U panel Note: this panel version uses the label VC PHASER rather than EQUINOXE as shown in the picture This is the Oakley version of the classic four stage OTA based phaser. Wonderfully lush a…
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Sample & Hold w/Slew Limiter Oakley Modular 5U MOTM
oakley sample & hold w/slew limiter MOTM format full kit includes everything you need to build the module This compact single width module features a powerful sample and hold module with controllable correlation, a slew g…
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Classic VCA v1.1 Oakley Modular 5U MOTM
Oakley Classic VCA, MOTM 1U PCB Issue 1.1 PCB Set includes the v1.1 PCB and the SOCK6 PCB (PCBs no longer available via Oakley Modular directly ) On Demand Info These kits and assembled modules are …
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Journeyman2 VCF Oakley Modular 5U MOTM
Oakley Journeyman2 VCF The Oakley Journeyman2 VCF DIY kit includes everything you need to build the module- panel, pcb, sock4 jack pcb, panel and pcb components etc component kit excludes the panel, pcbs, panel parts If …
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Diode Superladder Variable Slope VCF Oakley Modular 5U MOTM
Oakley Diode Superladder Variable Slope VCF full kit includes everything you need to build the module including the panel, main pcb, sock4 jack pcb, panel and pcb components, etc component kit excludes the panel, pcbs, and pa…
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COTA VCF Oakley Modular 5U MOTM
Oakley COTA VCF Controlled 'cascaded OTA' filter The full DIY synth kit includes everything you need to build the module- panel, main pcb, sock8 jack pcb, panel and pcb components etc. Component kit dopes not include&…
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Croglin Voltage Controlled Dual LPF Oakley Modular 5U MOTM
Oakley Croglin Voltage Controlled Dual LPF Full kit includes everything necessary to build the module, including the MOTM panel, main pcb, sock4 jack pcb, pcb and panel parts etc. Component kit excludes pcbs, panel, pan…
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State Variable VCF (SVCF) Oakley Modular 5U MOTM
oakley modular state variable vcf This is a two pole multimode filter capable of high pass, low pass, band pass and notch output modes. All four outputs are available simultaneously. This new version of the very popular Oakley desig…
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VCO V6 Oakley Modular 5U MOTM
An excellent sounding and popular VCO (voltage controlled oscillator) module. The design was originally inspired by the classic sound of the Mini's VCOs with the central core of the oscillator being somewhat similar. However, a great many …
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VCO V7 Oakley Modular 5U MOTM
PCB Issue 7 An excellent sounding and popular VCO (voltage controlled oscillator) module. The design was originally inspired by the classic sound of the Mini's VCOs with the central core of the oscillator being somewhat similar. However, a…
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