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PerFourMer MKII Quad Analog (Non CV/Gate) - Image 1

PerFourMer MKII Quad Analog (Non CV/Gate)

DesktopAnalogPolyphonic

Imagine having four independent analog synthesizers right at your fingertips, each capable of weaving its own sonic thread into a rich tapestry of sound—this is the magic that sets the PerFourMer MKII apart in Vermona's lineup of hands-on analog gear.

Each of its four channels packs a genuine analog VCO offering sine, triangle, two squares, two sawtooths, pulse width modulation, and white noise, feeding into a punchy 24dB/octave low-pass filter with resonance. Modulation comes from a dedicated LFO per voice—saw down, square, sine, or sample & hold, syncing to MIDI clock—and a full ADSR envelope that shapes pitch, filter cutoff, and VCA. Hands-on knobs give direct access to every parameter, with per-channel external inputs for filterbank duties, individual mono outs plus stereo mix with pan, a headphone jack, and optional CV/gate for modular integration. Housed in a sturdy 19-inch 5U rackmount chassis weighing about 3.7kg, it supports six play modes from monophonic unison to polyphonic, plus FM and hard sync between voices for endless experimentation.

Players love its intuitive layout that rewards tweaking in real time, delivering thick basses, soaring leads, and experimental textures with zero menu diving—though some wish for built-in wooden side panels.

Released

2012

Status

In Production

Synthesizer
Format
Desktop, Rackmount
Type
Analog, Subtractive
Internal Battery
No
Voice
A/D
Analog
Polyphony
Polyphonic
Oscillators
1
Oscillator Type
VCO (Voltage Controlled)
Voices
4
Filter
Lowpass, 24dB/oct (4-pole)
Envelopes
4
LFO
4
Effects
No
Expression
Aftertouch
No
Velocity
Yes
MPE
No
Additional
6 play modes (monophonic, duophonic, polyphonic), FM between channels, external input per voice, filterbank mode, 19 inch rack mountable
Software
-
I/O
Audio In
4x EXT In (per channel)
Audio Out
4x individual mono, 1x stereo
Headphone
1
MIDI
In, Thru
MIDI Type
DIN (5-pin)
Ports
USB
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
No
Mod Matrix
-
Memory
-
Measurements
Dimensions
435 x 315 x 105 mm
Weight
3.7 kg
Last updated Apr 4, 2026