Two faces. One signal. Linear phase, by design.

A linear-phase Linkwitz-Riley crossover with symmetric reach in both directions — high-pass on one face, low-pass on the other, sum-flat by construction. Built for multi-way active loudspeakers where phase coherence between bands and minimized audible pre-ringing are non-negotiable.

• 01 Symmetric FIR. Sum of HPF and LPF is mathematically flat — drop two instances on parallel paths and the magnitude rebuilds exactly.
• 02 Linkwitz-Riley slopes. From 1 to 48 dB/oct in decimal steps — pick the steepness, keep the phase.No analog-style phase rotation. No magic.
• 03 Latency modes. Eco / Normal / High-Res — trade pre-ring against latency to fit the source. Reported honestly to the host for delay compensation.
• 04 HPF, LPF, or both. Per-face enable means one instance can also be a clean linear-phase HPF or LPF — useful in single-band roles too.

Three bands of Baxandall musicality.

A three-band tone control built on Baxandall-style musical curves. Gentle, broad, intentionally reciprocal — cut and boost are mirrored halves of the same adjustment, not two unrelated filters. The shelves taper smoothly toward asymptote at the extremes, so even bold moves stay musical. The bell handles everything from wide tonal lean to focused presence shaping. Built for voicing by ear — the listener-end counterpart to Janus.

• 01 Baxandall-style curves. Smooth, broad, intentionally reciprocal. Cut and boost mirror each other; the shelves taper toward natural asymptote at the extremes. Heavy-handed settings stay musical instead of becoming brittle.
• 02 Adjustable shelf slope. Start at gentle 6 dB/oct (classic first-order Baxandall) and dial up toward sharper shelving when a band needs tighter focus.
• 03 Bell with adjustable Q. Wide for tonal tilt, narrower for presence shaping. Always musical, never clinical.
• 04 Per-band enable. A/B each band on its own without losing your settings — hear exactly what each band is contributing.

Every bit, accounted for.

A bit-depth and true-peak analyzer for multichannel signal chains. Measures the effective bit-depth of your audio in real time — not the claimed bit-depth, the bits actually doing useful work — and tracks sample clips, intersample peaks, and true-peak dBTP separately per channel. Pick any two channels from a multichannel bus to monitor.

• 01 Effective bit-depth, measured. Real-time histogram of the actual bits in use per channel. Verify your 32-bit float chain is actually doing 32-bit float work — or watch where the bits drop off.
• 02 True-peak detection. Separate counters for sample clips and intersample peaks. Catch the inter-sample overs your standard meter misses.
• 03 Multichannel source routing. L/R source dropdowns pick any two channels from the host bus — useful for verifying multichannel chains, or running per-channel diagnostics on Atmos / surround busses.
• 04 Configurable analysis window. 0.1 s for instant feedback; longer windows for stable readouts. Reset clears counters on demand.

Drive. Mix. Single-ended warmth.

An asymmetric soft-saturating waveshaper voiced for the harmonic character of a 300B SET. Not a tube simulation — an honest waveshaper that draws the same kind of even-dominant ladder a real single-ended triode produces, in a memoryless nonlinearity that's clean, fast, and predictable. The live harmonics display shows you the ladder building as you turn Drive up.

• 01 300B-voiced harmonic ladder. Even-dominant, ~20 dB per even order at reference Drive, with the small odd companion every real single-ended design carries. Voiced by ear against canonical 300B references, locked by measurement.
• 02 Two knobs that matter. Drive moves you along the saturation curve, Mix blends wet and dry. Auto Gain compensates for level changes from Drive so the controls do what you think they do. No voicing selector, no asymmetry knob, no parameter forest.
• 03 Live harmonics display. Per-harmonic dBFS readout from 1f to 8f, with even bins highlighted. Watch the ladder build as Drive opens up.A visualization of the curve's character, not a literal output spectrum.
• 04 Near-zero latency. ~12 samples at host sample rate. Minimum-phase polyphase FIR oversampling — no linear-phase smearing of transients, no long-IR latency cost. Safe to drop into monitoring and live chains.

Any IR. Convolved in double.

A VST3 double-precision convolution engine for room correction, active crossover work, and audiophile playback. End-to-end 64-bit floating point including the FFT itself — not the float-FFT-with-double-buffer compromise most convolvers ship. Non-uniform partitioned, with user-controllable head block size, hot-swap WAV loading, multi-rate filter sets, and an honest latency readout. Load a measured room correction, an active-speaker filter, or a captured IR of any analog hardware — Chronos convolves it cleanly.

• 01 End-to-end 64-bit double precision. Every stage runs in IEEE 754 double — input buffer, partitioned convolver, the FFT itself, output. Built on the marton78 pffft fork's double-precision branch with SIMD. Numerical floor sits near 10⁻¹⁶, not 10⁻⁷ — for long-tap correction work the precision matters.
• 02 Non-uniform partitioned convolution. Small head blocks near the impulse, doubling block sizes for the tail. You pick the head block size — direct latency vs CPU tradeoff. The exact latency is reported to the host for PDC and shown in the UI.Honest, deterministic, no auto-magic.
• 03 Native multi-rate WAV support. Export your filter at each rate you run — name them filter_44100.wav, filter_48000.wav, filter_96000.wav — and Chronos auto-picks the file matching your host rate. No resampling, exact response. When no native match exists, r8brain-free-src handles the conversion and tells you exactly what it did. Hot-swap loading: drop a new IR into the browser without stopping playback, lock-free filter handoff means the audio thread never blocks.
• 04 Impulse response display. See the loaded IR in the time domain at a glance. Auto-normalization is optional and off by default — you control the gain structure. Peak level reported alongside the metadata so you know what's hitting the chain.