This item is in excellent working condition and barely used.

The SE-1 was Studio Electronics’ first original product. We had spent several years adding MIDI, doing mods, and rack-mounting older synths. By 1991, we were ready to create our own product. Based largely on the MiniMoog, but incorporating many features from other classic Analog synths, it stored 255 patches and had extensive MIDI control; quickly it greased & boomed the bottom and wormed its way to the top on a multitude of hit records, soundtracks, video games, and touring racks.

After making it for 10 years or so and getting a lot of customer requests, we decided a major update was in order. The original ROM chip that held the operating system was full, so we designed a new CPU board, using a much larger Flash chip which enabled updating the OS over MIDI. Other standouts included 4 banks of 128 ROM patches, 4 RAM banks, an up-sized battery-backed SRAM chip made that possible, and a CV generator boost to produce smoother envelopes and LFOs; the pot reading was greatly improved as well, making that vital programming aspect much faster and smoother.

We continued to sell them for another 10 years...

In 2020, we got a request from one of our top dealers and good friends, Lewis Chiodo at Awave, to make a second special '1X model for him. In addition to the custom hardware he wanted—2 extra VCFs—he wondered if we could include some potent software updates too. At first I declined, since I hadn't been working with the Motorola (now Freescale) chip that ran it for several years, added to that, my development system for it didn't work anymore. After some persuasion however, I decided to try. Progress was painfully slow at first, but I was eventually able to put it all together, with the usual optimistic and determined circuit-bending assist from Greg St. Regis.

The SE-3X… Hard to believe it was nearly 30 years ago the SE-1 helped the world to play… TC

VCOs: 3 Voltage Controlled Discrete Analog Oscillators: OSC 1 waveforms: triangle, sawtooth, variable width square; OSC 2 waveforms: sine, sawtooth, variable width square; OSC 3 waveforms: triangle, sawtooth, variable width square. All waveforms output simultaneously. OSC 1 syncs to OSC 2, 3.
VCFs: 4 Voltage Controlled Discrete Analog Filters: SE Classic 24dB Moog®; SE Classic 24dB ARP®; SE Classic Juno/Jupiter 24dB, 12dB, and Mix modes; SE Classic 12dB Oberheim® filter incorporating Low Pass & Band Pass modes. Oberheim filter frequency range has been expanded by a whole tone.
Envelopes: 4 Multiple Stage Envelope Generators: attack, decay, sustain, release with inverting & multiple triggering. Envelope 1 fixed to filter frequency. Envelope 2 fixed to amplifier level. Envelopes 3 & 4 are assignable. ADSR speed increased from standard SE-1X.
LFOs: 3 Low Frequency Oscillators: triangle, sawtooth, reverse sawtooth, square, noise, random waveforms. One destination/amount for each LFO with key trigger, phase, clock-divisible MIDI-sync, auto-gate.
Glide: Linear or exponential glide (portamento), auto glide.
Fuzz: Switchable fixed value hardware amplifier overdrive for saturated distortion: 70’s (soft fuzz), 90’s (hard fuzz).
Presets: 4 factory banks, 4 designer banks: Scroggins Synquence, Infared, Diademer, PARAdizer (available 6/'21)
Faceplate: Matte Black, high contrast 4 color black, red, blue, green, white.
Additional Features: Noise Generator, hardware Ring Modulation.
Modulation Destinations: LFOs 1, 2, 3: VCOs 1, 2, 3 frequency; VCOs 1, 2, 3 mix level; VCOs 1, 2, 3 pulse width; ring mod mix level; noise mix level; VCF resonance; VCF frequency; volume. Envelopes 3, 4: VCOs 1, 2, 3 frequency; VCOs 1, 2, 3 mix level; VCOs 1, 2, 3 pulse width; ring mod mix level; noise mix level; LFO 1, 2, 3 rate, depth, VCF resonance.


  • Voices: Monophonic, with 3 note Paraphonic mode.
  • Audio Outputs: 1
  • External Audio Inputs: 1
  • Interface: 1 rotary encoder, 24 knobs, 20 square switches—17 illuminated, one three-way toggle (filter fuzz), one 5-way rotary switch (filter selection), power.
  • Main Display: 20 x 4 blue back-lit liquid crystal.
  • Memory: 8 banks of 99: 396 patches in ROM, 396 in RAM.
  • Weight: 11 lbs.
  • Dimensions: 3 rack spaces, 8 inches deep.
  • Power: 90 - 250 volts AC auto switching.

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  • SE-3X 3-Voice Rackmount Paraphonic Analog Synthesizer
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Chicago Music Exchange

Chicago, IL, United States
Joined Reverb:2012

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