BetaPi-NAM v1.0

TONE KING IMPERIAL MK II

Living Digital Twin — Physics-Informed Neural Amp Model

A single plugin that contains the entire behavior of the Tone King Imperial Mk II. Both channels. Every knob. Continuously variable. Real-time. Zero latency.

$29$59beta pricing

SIGNAL PATH

How a Living Digital Twin processes audio

  INPUT                                                          OUTPUT  ──┤                                                            ├──    │                                                            │    ▼                                                            │ ┌──────────────┐    ┌──────────────┐    ┌──────────────┐       │ │              │    │              │    │              │       │ │  PRE-FILTER  │───▶│  TONE STACK  │───▶│  POWER AMP   │───┬───┘ │              │    │              │    │              │   │ └──────────────┘    └──────────────┘    └──────────────┘   │                                                            │       ┌────────────────────────────────────────────────────┘       │       ▼ ┌──────────────┐ │   CABINET    │ │   IR (Morgan │ │   AC20)      │ └──────────────┘       │       ▼    OUTPUT
 ─────────────────────────────────────────────────────────
  CONDITIONING LAYER (FiLM)
  Knob positions ──▶ γ, β parameters ──▶ modulate every layer
  Volume ─────┐  Treble ─────┤──▶ FiLM(x) = γ · x + β  Bass   ─────┤  Mid-Bite ───┘

Feature-wise Linear Modulation (FiLM) injects knob positions as conditioning parameters into every layer of the network. The model does not switch between presets — it continuously interpolates through the full parameter space of the original amplifier circuit.

FULL SPECIFICATIONS

ArchitectureWaveNet-style dilated causal convolutions
ConditioningFeature-wise Linear Modulation (FiLM)
ActivationSnake — x + sin²(x)/a — tube saturation curves
Receptive field6,139 samples (0.128s at 48kHz)
Memory393 KB — fits in CPU L2 cache
Latency0 ms — strict causality
MACs/sample~1,440 multiply-accumulate operations
Training lossESR with high-pass pre-emphasis
Cabinet IRMorgan AC20 speaker cabinet convolution
FormatVST3 / AU
PlatformmacOS + Windows
Sample rate44.1 / 48 / 96 kHz

TWO CHANNELS. EVERY KNOB.

Rhythm Channel

Fender Blackface-inspired. Clean to edge-of-breakup.

Volume0 — 10
Treble0 — 10
Bass0 — 10

Lead Channel

Fender Tweed-inspired. Warm breakup to full saturation.

Volume0 — 10
Mid-Bite0 — 10

Every parameter is continuously variable in real-time. No presets. No snapshots. The FiLM conditioning layer modulates the network at every knob position — the same way the real circuit responds to the physical potentiometers.

QUESTIONS

Not a snapshot. A twin.

393 KB. Zero latency. Every knob works.

Launch price: $59