Product Price Oscillator Count Polyphony Envelope Sections Filter Types Modulation Sources MIDI Compatibility
Behringer Model D Analog Synthesizer Module
US
£123.63 3 VCOs Monophonic with 16-unit Poly Chain Two envelope generators Low-pass/high-pass ladder filter Oscillator 3, filter envelope, noise, external signal, LFO

The Behringer Model D is a semi-modular analog synthesizer module with three VCOs, a resonant 24 dB ladder filter, dual filter modes, and a dedicated triangle or square LFO. Its Eurorack compatibility, CV connections, and MIDI and USB-MIDI support make it suitable for beginners, studio producers, and modular synthesizer users seeking classic bass and lead sounds.

★ Ideal for

It suits the best-value-under-300 question because it provides three analog VCOs, two filter modes, two envelope generators, Eurorack compatibility, and MIDI connectivity for 249 USD or less.

Korg Monologue Analog Synthesizer
US
£191.51 2 VCO 1 voice 1 EG 2-pole VCF EG, LFO

The Korg Monologue is a fully programmable monophonic analog synthesizer with two oscillators, a two-pole filter, drive circuit, LFO, and 16-step motion sequencer. Its compact 25-key design and battery operation suit beginners, bass and lead players, and portable live setups.

★ Ideal for

It offers strong value under $300 with two analog VCOs, one-voice monophony, a two-pole filter, drive circuit, programmable presets, and a motion-capable 16-step sequencer.

Arturia MicroBrute UFO
US
£198.90 1 VCO with sub-oscillator Monophonic ADSR and gate Low-pass, band-pass, high-pass LFO, ADSR envelope, modulation wheel, external CV

The Arturia MicroBrute UFO is a compact analog monosynth with one VCO, sub-oscillator, Steiner-Parker multimode filter, patchable modulation matrix, and built-in 64-step sequencer. It suits basslines, leads, experimental sound design, and musicians who want hands-on analog control in a small keyboard.

★ Ideal for

It offers strong value under $300 with a single analog VCO, sub-oscillator, three-mode filter, ADSR and LFO modulation, CV/Gate, MIDI, USB MIDI, and a built-in sequencer.

Arturia MicroFreak Vocoder Edition
US
£246.22 1 digital oscillator Monophonic; paraphonic up to 4 voices 2 Analog state variable low-pass, band-pass, high-pass Cyclic envelope, ADSR envelope, LFO, pressure output, sequencer/arpeggiator

The MicroFreak Vocoder Edition is a compact hybrid synthesizer with one digital oscillator, an analog multimode filter, polyphonic aftertouch, and a 16-band vocoder with a detachable gooseneck microphone. It suits adventurous producers, performers, and sound designers who want experimental textures, vocal processing, sequencing, and flexible modulation in a portable instrument.

★ Ideal for

It offers strong value for experimental synthesis through its digital oscillator, four-voice paraphony, analog multimode filter, modulation matrix, sequencer, and vocoder, although the searched retail prices exceed $300.