Real tube warmth for your digital audio.

Physics-based triode modeling with Koren equations at 8× oversampling. True harmonic distortion from real circuit simulation, not just an EQ curve.

Mac App Store iOS App Store
No Subscriptions AUv3 Compatible System-Wide on macOS
Audiophile mode iOS Pro Studio
Ecosystem

Three platforms, one analog soul.

The same physics-based tube model everywhere. Your music deserves warmth, regardless of where you listen.

macOS AU Plugin

Use in Logic Pro, GarageBand, and any AUv3 host. Full Pro mode with 9 tube types, real-time THD analysis, and parameter automation.

Exclusive

macOS System-Wide

Add tube warmth to everything you listen to. Spotify, YouTube, Apple Music. System-wide audio processing via Core Audio Tap.

iOS & iPadOS

Studio tube sound on iPhone and iPad. Works standalone or as AUv3 in GarageBand, AUM, Logic Pro, and any host.

Core Engine

Real circuits, real harmonics.

Real vacuum tube physics. Every harmonic comes from the Koren triode model running at 8× oversampling.

Koren Triode Model
E1 = (EP⁄kP) log(1 + exp(kP(1⁄μ + EG⁄√(kVB + EP²))))
IP = (E1X / kG1)(1 + sgn(E1))

9 tube types

12AX7, 12AT7, 12AU7, 12BH7, 6SL7, 6SN7, 6922, 6H30, ECC99. Each with unique Koren parameters and harmonic character.

Real-time THD chart

Live Total Harmonic Distortion analysis. See THD, THD+N, H2 and H3 levels as you adjust parameters. No other plugin shows this.

8× oversampling

Heavy saturation generates high frequencies. Custom oversampled engine ensures your high-end stays smooth, never harsh or aliased.

Tube aging emulation

Three aging levels (New, Worn, Old) plus Pro knobs for specimen spread, drift, shot noise, and mu degradation.

Shared PSU coupling

Stereo channels share a virtual power supply. Loud passages on one channel sag the other, just like real tube amps.

Transformer saturation

Output transformer model with core saturation, resonance peak, bass phase shift, and phase dispersion for authentic iron tone.

Live Analysis

See what you hear.

Real-time THD vs. input level chart built into every mode. Watch harmonic distortion grow as you drive the tubes harder. Select different tube types and see how each one colors the sound.

THD vs Level

THD
0.00%
H2
—
H3
—
-40-30-20-12-6-2 dBFS
THD THD+N
Pro Mode

Build the circuit,
shape the tone.

Go beyond presets. Dial in exact tube character with real circuit parameters from classic amplifier designs.

Factory Presets
Golden Glow British Chime Liquid Presence Velvet Bloom Crystal Air

Inspired by real tube circuits from classic preamps, guitar amps, and hi-fi amplifiers.

9 Tube Types
12AX7 12AT7 12AU7 12BH7 6SL7 6SN7 6922 6H30 ECC99

Triode Operating Point

Plate voltage, plate resistor, grid bias, Mu Scale. From clean headroom to asymmetrical clipping.

Plate V
Bias
Mu

Power Supply Dynamics

Rectifier resistance, filter cap, reservoir. From stiff solid-state to saggy GZ34 tube rectifier.

Rect R
Filter
Res

Output Transformer

Core saturation, resonance frequency and Q, bass phase shift. The soul of the amp's voice.

Xfmr
Reso
Q

Advanced Circuit

Coupling cap, cathode bypass, NFB ratio, grid leak, interstage drive.

NFB
Bypass
Drive
Get TubeSound

Available on the App Store.

No subscriptions. One payment unlocks everything forever.

macOS AU Plugin

One-time purchase
  • AUv3 for Logic Pro, GarageBand, any host
  • 23 Audiophile presets + Pro mode with 9 tube types
  • 5 Pro factory presets + unlimited user presets
  • Real-time THD chart
  • No trial limitations
Mac App Store

macOS System-Wide

Free to try · In-app purchase to unlock
  • Process all system audio through tubes
  • Spotify, YouTube, Apple Music, everything
  • 23 Audiophile presets + Pro mode with 9 tube types
  • 5 Pro factory presets + unlimited user presets
  • Real-time THD chart
  • Trial: 3s silence every 60s
Mac App Store

iOS App + AU Plugin

Free to try · In-app purchase to unlock
  • Standalone + AUv3 in GarageBand, AUM, Logic Pro, any host
  • iPhone & iPad
  • 23 Audiophile presets + Pro mode with 9 tube types
  • 5 Pro factory presets + unlimited user presets
  • Real-time THD chart
  • Trial: 3s silence every 30s
iOS App Store