Radikal Technologies Delta CEP A Synth Now Available

Radikal Technologies has announced the availability of its Delta CEP A synthesizer – a paraphonic semi-modular synthesizer that’s available in desktop and Eurorack versions.

The Delta CEP A – introduced at the 2018 NAMM Show -offers nine essential synthesis ‘modules’ in one device, which together make a powerful all-in-one synth voice that can be used as a starting point or building block in Eurorack modular systems. The synth can be used as a standalone synth or, when removed from the chassis, as a 68HP Eurorack module.

Radikal notes that the Delta CEP A sounds particularly good in paraphonic mode, because it offers two oscillators per voice, which can sound much richer than synths that use one onscillator per voice in paraphonic mode.


  • The Delta CEP A is semi-modular, so it can be used as a pre-patched synth voice, without the need for any patch cables. But patch points are available to allow you to override the default patching to create custom sounds or to use the synth’s individual modules within your Eurorack system.
  • The Delta CEP A also features a unique ‘snapshot’ system, that lets you store the states of settings on the synth, and even interpolate between them or sequence from one snapshot to another.
  • It also offers a well-equipped MIDI to CV interface, significant when wanting to use the instrument in paraphonic mode. It also has additional outputs for connecting to external Eurorack modules, and a dedicated digital bus for controlling Radikal Technologies’ RT-311 Swarm Oscillator.
  • The LFO 1 section features five waveforms, MIDI and clock synchronisation, and an invertible DEPTH control for modulation purposes.
  • The synth’s swarm oscillator is accessed via the SWARM OSC section; PARAPHONIC play mode (allowing four voices to be simultaneously played), PITCH quantisation, and easy tuning (DETUNING) access.
  • The MIXER section mixes the outputs from the swarm oscillator and the noise source or an external signal for the filter.
  • The VCF (Voltage Controlled Filter) section offers an analog 12 dB multimode filter, alongside a stereo digital emulation of that 12 dB multimode filter, plus a digital 24 dB lowpass filter.
  • ADSR section with ‘snappy-sounding curves’, together with ATTACK and DECAY voltage control inputs.
  • VCA that can be controlled by either the ADSR envelope or GATE signal, while also providing external inputs for the FX processor section, which features stereo delay effects, as well as chorus, flanging, and phasing.
  • 23 knobs, 14 buttons, 28 RGB LEDs, 14 outputs, and 17 inputs.
  • Stereo OUTPUT; stereo FX-INPUT; MIDI IN, OUT, and THRU; and DC 12-19V, 2A DC-IN connections, plus onboard ON/OFF switch.

Video Demos:

Pricing and Availability

The Delta CEP A is now available for purchase, with an RRP of €899.00 EUR/$999.00 USD (Eurorack) and €1,198.00 EUR/$1,298.00 USD (desktop).

12 thoughts on “Radikal Technologies Delta CEP A Synth Now Available

  1. I thought, awesome a Neutron competitor…..then I saw that it is triple the price and does not even sound as good. xD

    1. It’s not clear to me if you’re trolling or just don’t know anything about synthesizers. Comparing this to a Neutron makes as much sense as comparing a Volkswagen to a Mercedes.

      Behringer’s idea of doing something original is making all of their Eurorack knockoff synths different widths, so that they can’t easily be racked. They could have ripped off that aspect of Moog’s Eurorack lineup, too, and at least had a line you could rack up nicely.

      Enjoy Behringer’s stuff for what it is – cheap knockoffs – and don’t try to pretend it’s something that it isn’t.

        1. Someone new to synths might think the Neutron is original – but people have been doing simple two-oscillator synth designs since the 60’s.

          Behringer has yet to do anything original in the synth world. They see their place as making cheap knockoffs, so everything they’ve announced is a clone, or is derivative of designs from 30-40 years ago. The exception is the Crave, which is a Mother-32 knockoff.

          Not sure why you mention the Neutron to begin with, when no one knowledgeable about synths would put it in the same league, in terms of capabilities, originality or sound as anything Radikal has ever done.

          Note that I’m not knocking Behringer for what it is – if you want cheap entry level gear and want to make retro sounds, their synths are a great option. I’ve got a Behringer D, and it’s a good knockoff.

          1. By that mentality then almost all synths are copy cats….except for a few really out there designs like the Gamechanger Motor Synth…..one could even compare that to a similar mechanism in certain organs. We have not had any real innovation since the 80s.

            Funny you mention price, if it was made by a boutique manufacturer I guarantee it would be priced similarly to the CEP A.

            1. “… and does not even sound as good”
              It’s only your opinion. The synth is made by a person having a very large experience and who produced some iconic synths. So… buy a Neutron and enjoy sparing money. You are smart enough, isn’t it?

              1. The Neutron is out of the budget at the moment. Also, don’t get me wrong. The CEP A sounds good, but not enough for the money. Now the UDO Super 6, that sounds good even for that much money.

  2. I listened to the whole set of YouTube videos. What really sets the Delta Cep A apart is not the voice, but the FX section. But I just bought a Korg Volca Modular, so I’m gonna be set for a while…

  3. •The Delta CEP A also features a unique ‘snapshot’ system, that lets you store the states of settings on the synth, and even interpolate between them or sequence from one snapshot to another.

    That’s a killer feature that I’d love to see more manufactures adopt or Radikal Technologies expand upon in future products. Especially if you can MIDI and or CV control the morphing between snapshots

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