Shelbybark LLC

Classic FET Character.
Built for iPhone and iPad.

Warm, musical compression voiced in the tradition of the Cali76 — and the vintage 1176 circuit it's based on. AUv3 plugin for live performance and studio recording.

Get it on the App Store — $5.99 See features
FET Acoustic Compressor plugin UI

Voiced for feel.
Ready for any instrument.

FET Acoustic Compressor is dialed in for acoustic guitar — but the soft knee, program-dependent release, and gentle FET saturation translate beautifully to electric guitar, bass, vocals, keys, and anything else that benefits from a compressor with character. It sits, it glues, it breathes.

Every knob matters.

IN

Input Drive

Push the signal into compression. More drive means more character — let the compressor work for you.

ATTACK / RELEASE

Shape the Transient

Fast enough to catch a pick attack. Slow enough to let the body bloom. Knob direction matches the original hardware.

RATIO

2:1 to 20:1

Gentle leveling to heavy squash — and a secret mode hiding behind the label.

OUT

Output Level

Trim your output after compression. Bring the level back up or keep it controlled.

DRY

Parallel Blend

Mix your dry signal alongside the compressed output — parallel compression without the routing setup.

SC HPF

Sidechain Filter

High-pass the detector signal so low-end doesn't trick the compressor into over-reacting.

GAIN REDUCTION METER

See What's Happening

A real-time meter shows exactly how hard the compressor is working at any moment.

4× OVERSAMPLING

Clean Processing

Runs at four times your sample rate internally for artifact-free FET saturation at any setting.

ALL-IN MODE

The secret weapon.

Tap the RATIO label to activate All-In — the infamous trick of pressing all four ratio buttons simultaneously on a vintage 1176-style compressor. Ratio locks to 100:1, the knee tightens, and asymmetric FET saturation kicks in. Gritty. Pumping. Unmistakable.

RATIO → ALL

GAIN REDUCTION (dB)

RATIO 4.0
ATTACK 2.00 ms
RELEASE 150 ms
ALL-IN OFF

Start somewhere great.

Three factory presets get you to a useful sound immediately — then dial from there.

Compressed Fingerstyle

Tight and controlled. Keeps fingerpicked dynamics even without flattening the feel.

Dynamic Fingerstyle

More open and expressive. Lets the natural dynamics breathe while adding gentle glue.

Pop Strumming

Punchy and present. Tames strumming peaks so the guitar sits right in a busy mix.

iPhone, iPad, and Mac.

iOS / iPadOS

$5.99

  • AUv3 plugin
  • GarageBand
  • AUM
  • Loopy Pro
  • Cubasis
  • Any AUv3 host

macOS

Coming soon

  • AU and AUv3 plugin
  • Logic Pro
  • Reaper
  • GarageBand
  • Any AU host

Your tracks deserve
better compression.

Download on the App Store — $5.99