Replay Polyphonic Synthesizer

Vongon stepped into the synth world with this gem, channeling the warm, nostalgic vibe of 1980s classics like the Roland Juno and Korg Polysix into a super-compact pedalboard-friendly package.

At its core is a 6-voice virtual analog engine with a single oscillator per voice offering ramp, square, sine, or triangle waves, plus PWM for square, noise generator (switchable to external audio input), and a versatile LFO with 7 waveforms that can sync to the arpeggiator. Sound shapes up through a 4-pole resonant lowpass filter with cutoff, resonance, envelope amount, key tracking, and LFO mod, followed by ADSR envelope on filter and VCA, all controlled via 22 intuitive sliders and Rogan knobs on a sleek monochrome aluminum body. The 2.5-octave keyboard uses swappable Cherry MX mechanical keys for that satisfying tactile feel, with a multimode arpeggiator (up/down/order/random) featuring latch, keyed, and poly modes, MIDI beat sync, and 1-3 octave range. Power it via USB or standard 9VDC pedal supply, connect with 3.5mm MIDI I/O or USB, and tweak deeper params plus 31 presets through a web interface—perfect for stacking on a board without the bulk.

Players love how it nails organic, Juno-esque pads, leads, and arps right out of the box, praising the hands-on layout and build quality, though some note the fixed 6-voice polyphony limits mega-chords.