Larsen

four-channel no-input mixer

nothing plugged in.
it feeds on itself.
you play the feedback.

A small mixer with its outputs wired back into its own inputs. Nothing comes in from outside: the hiss, the hum and the howl are the instrument. You steer it with the EQ, a patch bay, a delay and a spring reverb.

$19launch price
until Dec 18, then $29

Buy Listen first Free trial

Windows 10 and 11 · VST3 and standalone
Pay once, use it forever · Full refund within 14 days

Larsen: four channel strips on the left, the PATCH bay in the middle, and the round phase scope on the right.

Listen

Six factory presets, rendered straight from the plugin with nothing plugged in. Each clip starts from silence, and all of them play at the same level. The color is the control each one is about.

The PATCH bay. Each row is an output, each column a channel. A dashed line means the phase is flipped.

Wired back into itself.

Plug a mixer’s output back into its own input and it starts to howl. Larsen is a small four-channel mixer made for exactly that.

The PATCH bay sends any of eight outputs back into any of the four channels: the two aux returns, master left and right, and each channel’s insert. Set how much goes back, and flip the phase of any point. One flip can turn a low hum into a tone, or into a rhythm.

The EQ picks the note.

Each channel has NOISE, the hiss it starts from, a TRIM that saturates as you push it, a three-band EQ with a sweepable MID, two aux sends, pan, a fader and MUTE. In a feedback loop, the EQ decides what rings: boost MID and sweep it, and the tone follows.

Left against right.

The round screen draws the last few milliseconds of the output, left against right, on every frame. A mono sound stands straight up. The wider the stereo, the more it spreads.

Under it, FUNDAMENTAL shows the strongest frequency in the output, from 30 Hz to 5 kHz. When the loop goes quiet, it goes dark.

The phase scope and the counter. Nothing on the screen moves unless the sound does.

Chaos you can keep.

Feedback never plays the same way twice. These help you find a sound and get back to it.

The two effects on the aux sends, and the snapshots.

Two effects in the loop

A delay on AUX 1, from half a millisecond to 450, that bends the pitch as you change its time. A spring reverb on AUX 2, with TENSION, DECAY and MIX.

Snapshots

Store two states in A and B, and MORPH slides every knob and patch point between them.

EXPLORE and UNDO

EXPLORE nudges the gains, the MID frequencies and the patch points a little, at random. UNDO takes you back.

PULSE and RESET

A short click on every channel, to wake up a loop that went quiet. RESET clears it.

MIDI learn

Right-click any knob, fader or button, then move a control on your MIDI device.

Presets

30 factory presets, plus your own, saved as files.

Loud, never dangerous.

Feedback can jump from a whisper to full scale in a moment. Three things stand between Larsen and your ears:

GUARDWatches how fast the loop gets louder. When it runs away, GUARD turns it down gently, and its light comes on. You can switch it off.
CEILINGA limiter that is always on. Set it anywhere from −12 to 0 dBFS, and nothing ever goes over it.
DC BLOCKAlways on, on every channel and on the output, so your speakers never get pushed by a slow drift.

Pay once. Keep it.

No subscription. No account needed to use it. No need to stay online.

Yours for good

One payment. Every update is free.

Three computers

Activate up to three. Free one up yourself from inside the plugin, even if that computer died.

Works offline

Activate once, then use it offline forever. When you’re online, it quietly checks in once a month.

Your presets are files

Plain files in a folder you can open from the preset list. Copy them, share them, back them up.

Your data

Activation sends your license key, a hashed computer ID, and your computer’s name. Nothing about how you use the plugin.

Try it first

The free trial has everything. Until you activate, it goes silent for a moment about once a minute. Bought it and it’s not for you? Full refund within 14 days.

Details

Formats: VST3 and standalone
System: Windows 10 and 11, 64-bit
Input: None. The sound starts from the hiss of its own channels.
Safety: GUARD, a limiter that is always on, and DC blocking
MIDI: MIDI learn on every knob, fader and button
Presets: 30 factory presets, plus your own, saved as files
Language: English

Larsen

four-channel no-input mixer

$19launch price
until Dec 18, then $29

Buy Full refund within 14 days.