SAMT optical compressor interface with input, gain reduction and output meters, Peak Reduction, Character, Mix and Auto Gain controls

Samt

An optical compressor inspired by the legendary LA-2A. Smooth out vocals and bass with musical, program-dependent compression, 4x oversampled colour and Auto Gain.

Windows · VST3macOS · AU + VST3
$49.99

Digital product. No shipping.

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A great take. A little less fader chasing.

The vocal has the feeling. The bass has the groove. A few notes just insist on being louder than the rest. SAMT brings them into place with smooth optical compression, so you can spend less time chasing levels and more time hearing the performance.

Inspired by the legendary LA-2A, SAMT pairs a response that follows the music with adjustable harmonic colour, 4x oversampling and the controls you reach for in a modern session. Turn up Peak Reduction, listen to the phrase settle, and leave the life in it.

SAMT optical compressor rendered in Blender, showing the input, gain reduction and output instruments

The LA-2A was the starting point. The music was the reason.

We studied published LA-2A schematics and the behaviour of optical gain control to understand what makes that style of compression so musical. The way it eases into a phrase. The way its recovery changes after a short peak or a long held note. SAMT brings those ideas into an original digital model with a soft knee and a release that remembers what just passed through it.

Use COMPRESS for gentle levelling and LIMIT when you want a firmer grip. Vocals stay present, bass lines feel more even, and you get to shape the amount by ear instead of setting another pair of attack and release knobs.

SAMT 3D close-up of the Input and Character controls on its champagne metal panel

A little colour goes a long way.

Sometimes the level is right and the sound still feels a little thin. CHARACTER lets you add harmonic density from SAMT's input and output stages, from a subtle touch to a more obvious edge. Keep it low for gentle polish or drive the input harder when the colour should become part of the performance.

Both colour stages run with fixed 4x oversampling to reduce aliasing from the added harmonics. It is always there, whether you are finding the sound or exporting the finished mix.

SAMT 3D detail of its Mix and Gain controls for parallel optical compression

Keep the punch. Bring in the weight.

Push the compression a little further, then use MIX to bring the original attack back. Parallel compression is right on the front panel, with the dry and processed paths aligned in time. You can make a part feel denser without committing every transient to the same treatment.

The sidechain high-pass filter lets low notes carry less weight in the detector. Your bass stays in the audio; it simply stops telling the compressor what to do quite so often.

SAMT 3D close-up of the Compress Limit toggle and Auto Gain button

Better, or just louder?

That extra decibel is a very persuasive salesperson. Switch on AUTO GAIN and give it a few seconds to settle. SAMT compensates for much of the level change while you adjust the compression and colour, making it easier to hear what actually helps the track.

Auto Gain takes over the manual GAIN control while it is on. Switch it off and your saved gain setting returns. Use BYPASS for the final comparison, and trust the part in the mix as much as the meters.

Try Samt free for seven days

Try every feature of Samt in your own session. No credit card required.

System requirements

Windows
Windows 10 or 11, 64-bit. VST3.
macOS
macOS 11 or later. Apple silicon and Intel. Universal build.
Plugin formats
Windows: VST3. macOS: Audio Units (AUv2) and VST3.
Your DAW
Load Samt as an audio effect in a compatible DAW. Logic Pro uses Audio Units. The Mac installer is signed and notarized. AAX and a standalone application are not included.
Read manual (PDF)

Frequently asked questions

Is SAMT an LA-2A emulation?

SAMT is inspired by the legendary Teletronix LA-2A family. We studied published schematics and optical gain-control behaviour, then developed our own model with program-dependent recovery and adjustable harmonic colour. It is not a measured reproduction of a particular hardware unit. Metasis Audio is independent and is not affiliated with or endorsed by the owners of the LA-2A or Teletronix names.

Does SAMT use oversampling?

Yes. The input and output colour stages run at four times the host sample rate. Filtering reduces aliasing from the generated harmonics. Oversampling is fixed and always active, with a reported latency of 112 samples, about 2.33 ms at 48 kHz.

What are COMPRESS, LIMIT and the sidechain filter for?

COMPRESS gives gentler optical levelling; LIMIT applies firmer gain control. LIMIT is not a brickwall peak limiter. The sidechain high-pass filter reduces low-frequency influence on the detector without filtering the bass out of the audio.

Why is the GAIN control grey?

AUTO GAIN is on. It slowly compensates for level changes and takes over manual output gain. Turn it off to restore your saved GAIN setting. Allow several seconds for it to settle; it is an RMS listening aid, not an exact loudness match or peak limiter.

Can I try SAMT before buying it?

Yes. The complete plugin runs for seven days from first launch, with no credit card required. After the trial, activate it with your purchase email and licence key. A standard licence covers two computers, and normal activated use works offline without periodic licence-server checks.

Which computers and plugin formats are supported?

Windows 10 or 11 uses the 64-bit VST3. macOS 11 or later includes Audio Units and VST3 in a universal build for Apple silicon and Intel. The Mac installer is signed and notarized. AAX and a standalone application are not included.

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