#1
Moog Subsequent 37
Analog Monophonic · VCO, Moog ladder filter$900–$1,200 usedBest for: Professional bass and leads, warm Moog filter tone, players seeking the classic Moog sound
The Moog Subsequent 37 is a three-oscillator monophonic synthesizer built on the Moog sound — the ladder filter design that defines warmth in electronic music. With three detunable VCOs, a legendary filter with subtle saturation, and a full sequencer, the Subsequent 37 is the entry point to professional-grade Moog synthesis without paying $3,000+ for a vintage Model D. Every control is knob-per-function for immediate hands-on synthesis.
What to check used: Verify all three VCOs track cleanly across the keyboard range and that the ladder filter produces consistent resonance. Check the aftertouch sensor responsiveness.
#2
Sequential Prophet-6
Analog Polyphonic · 6-voice polyphonic VCO$1,800–$2,400 usedBest for: Pads, leads, chords, professional analog poly production
The Sequential Prophet-6 is the modern flagship polyphonic analog synthesizer — six voices of true analog oscillators with the classic Prophet character: warm pads, bright leads, and smooth polyphonic synthesis. Built by Dave Smith, who designed the original Propet 5 that defined the 1980s sound. The Prophet-6 has a 49-key weighted keyboard and deep modulation options. Used Prophet-6s at $1,800–$2,400 are the most affordable entry to pro-level analog poly synthesis.
What to check used: All six voices should produce consistent output. Verify the keyboard action and aftertouch response. Check that all modulation destinations (filter, VCA, pitch) respond smoothly.
#3
Arturia MiniBrute 2S
Analog Monophonic · Steiner-Parker filter, patch bay$350–$500 usedBest for: Aggressive tones, filter modulation, learning patching and signal flow
The Arturia MiniBrute 2S adds a step sequencer to the MiniBrute 2 — monophonic analog synthesis with a full patchbay for modular routing. The Steiner-Parker filter produces brighter, more aggressive tones than the Moog ladder filter and opens more modulation possibilities. For producers learning analog synthesis and signal flow, the MiniBrute 2S teaches patching and modulation at an accessible price and size.
What to check used: Verify all patch points make clean connections. Check the sequencer saves and recalls patterns. Test the Steiner-Parker filter resonance across the frequency range.
#4
Korg Minilogue XD
Analog Polyphonic · 4-voice polyphonic, analog + digital FX$350–$500 usedBest for: Teaching analog synthesis, all-around production, visual learning
The Korg Minilogue XD is the educational star of analog synthesis — 4-voice polyphonic with true analog oscillators and filter, plus programmable digital effects. The oscilloscope display shows your waveforms in real-time as you tweak the controls, and the interface is clear enough that beginners understand signal flow immediately. Used Minilogue XDs at $350–$500 are the best value for learning true analog synthesis.
What to check used: Verify all four voices produce consistent output. Check the oscilloscope display functions. Ensure the digital effects engine loads custom oscillators if that matters to you.
#5
Behringer Model D
Analog Monophonic · Moog ladder filter, 3 VCOs$150–$220 usedBest for: Minimoog tone on a budget, bass and leads
The Behringer Model D is a faithful circuit recreation of the Moog Minimoog Model D — one of the most influential analog synths ever built. It uses the same ladder filter and VCO-based architecture at a fraction of vintage Minimoog prices. Used Model Ds at $150–$220 give players access to genuine Minimoog character, the filter tone that defined synthesizer history, without paying $5,000+ for an original.
What to check used: Check all three oscillators for clean pitch tracking. Verify the ladder filter resonance. Early batches had potentiometer noise — test all controls for clean response without crackling.
#6
Roland SH-4d
Analog Monophonic · VCO, digital sequencer$350–$500 usedBest for: Sequencer-driven analog bass and leads, 808-style tones
The Roland SH-4d is a compact analog monophonic synth with a powerful 16-step sequencer and Roland's characteristic analog filter sound — not as famous as the Moog ladder but warm and punchy. The 4-voice chord mode lets you play chords from a single oscillator. Used SH-4d units at $350–$500 are excellent for sequencer-driven electronic music and learn hands-on patching.
What to check used: Verify the sequencer records and plays back patterns correctly. Test the oscillator tuning and filter resonance. Check that the chord mode functions.
#7
Dreadbox Typhon
Analog Monophonic · Semi-modular, Steiner-Parker filter$350–$480 usedBest for: Modular-ready analog synthesis, experimental tones, patching
The Dreadbox Typhon is a compact Greek-made semi-modular analog synthesizer with Eurorack modularity and the Steiner-Parker filter for aggressive character. Fully analog signal path, patchable oscillators and envelopes, and built-in distortion. For players interested in modular synthesis without committing to a full Eurorack system, the Typhon at $350–$480 used is an excellent entry into semi-modular analog.
What to check used: Check all modulation destinations work correctly. Verify the Steiner-Parker filter responds across the full frequency range. Test distortion without clipping.