# Which analog synthesizer has the sturdiest build for long-term use? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which analog synthesizer has the sturdiest build for long-term use?

## Products

### Arturia MiniFreak
```yaml
product: arturia-minifreak
brand: Arturia
price_gbp: 400.82
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 6 voices
connectivity: USB, MIDI In/Out/Thru, stereo audio out (2x 6.3mm), audio in (6.3mm), headphone out (6.3mm), sustain input (6.3mm), clock in/out (3.5mm), reset out, 12V power in
filter_types: low-pass, band-pass, high-pass (state-variable analog)
num_oscillators: 2 engines per voice
envelope_sections: per-voice ADSR envelope; per-voice cycling envelope
modulation_sources: 2 LFOs, cycling envelope, 7 modulation matrix sources
```

- **Price:** £400.82 [^1]
- **Summary:** MiniFreak is a six-voice polyphonic hybrid synthesizer with two digital sound engines per voice and polyphonic analog state-variable filters. It offers 31 oscillator modes, a flexible modulation matrix, three FX engines, a 37-note velocity-sensitive keybed with aftertouch, and deep integration with the MiniFreak V plugin. Suited to sound designers and performers who want experimental digital timbres combined with analog filtering and hands-on control.
- **Ideal For:** Not an analog synthesizer; however, its metal chassis, universal PSU, and robust build quality (metal housing, 37-note keybed, 2.94kg) make it durable for long-term use.

### Dave Smith Instruments OB-6
```yaml
product: dave-smith-instruments-ob-6
brand: Dave Smith Instruments
price_gbp: 2622.16
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 6 voices
connectivity: USB bidirectional MIDI, MIDI In/Out/Thru, audio outputs, sustain pedal input, expression input, power input
filter_types: Two-pole state-variable resonant filter (low-pass high-pass band-pass notch)
num_oscillators: 2 discrete VCOs per voice plus sub-oscillator
envelope_sections: Filter envelope ADSR; Amplifier envelope ADSR
modulation_sources: LFO (multiple waveforms), X-Mod sources: filter envelope and oscillator 2
```

- **Price:** £2622.16 [^2]
- **Summary:** The OB-6 is a 6-voice analog polyphonic synthesizer with two discrete VCOs plus a sub-oscillator per voice, a two-pole state-variable filter with multiple modes, dedicated ADSR filter and amp envelopes, and advanced modulation (X-Mod) and dual effects. It features a knob-per-function front panel, 49-key semi-weighted keyboard with aftertouch, polyphonic step sequencer and USB/MIDI connectivity, suited for studio and live performance. The sound blends classic Oberheim SEM character with modern pe
- **Ideal For:** Ideal for long-term sturdy use because it uses discrete VCOs and discrete voice-card analog circuitry with a robust metal and wood build and a 49-key semi-weighted keyboard, providing durable, serviceable analog voice cards.

### Moog Moog Subsequent 37
```yaml
product: moog-moog-subsequent-37
brand: Moog
price_gbp: 1422.71
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: Selectable monophonic or paraphonic
connectivity: MIDI DIN In/Out, MIDI over USB, 1/4 inch audio out, 1/4 inch headphone, CV inputs (filter pitch volume), Gate, External audio input
filter_types: Moog Ladder low-pass 6/12/18/24 dB per octave
num_oscillators: Two variable waveshape oscillators
envelope_sections: Two DAHDSR envelopes
modulation_sources: LFOs (triangle square saw ramp sample & hold) plus 10 programmable sources
```

- **Price:** £1422.71 [^3]
- **Summary:** The Moog Subsequent 37 is a 100% analog, knob-per-function synthesizer with two waveshape oscillators, a sub-oscillator, a Moog Ladder filter with multi-slope options, extensive modulation routing, and a 37-note semi-weighted keybed with aftertouch. It offers selectable mono or paraphonic voicing, DAHDSR envelopes, a powerful arpeggiator/sequencer, and hardware improvements for richer low end and greater headroom. It suits players who want hands-on analog sound design and stage-ready build quali
- **Ideal For:** Ideal for long-term sturdy use because it has a metal chassis, upgraded keybed, robust knob-and-switch panel, and a hardened Moog Ladder filter and Multidrive circuit that increase headroom and durability.

---
## References & Sources
[^1]: Thomann, accessed 2026-06-09. https://www.thomannmusic.com/arturia_minifreak.htm
[^2]: Sam Ash, accessed 2026-06-09. https://www.samash.com/dave-smith-instruments-ob-6-6-voice-polyphonic-analog-synthesizer-ddsi2700x-p
[^3]: Perfect Circuit (alternate listing), accessed 2026-06-09. https://www.perfectcircuit.com/moog-subsequent-37-synth.html