Tape, tubes, iron, and glue — an entire analog record chain in one photographed console. Every knob is calibrated to hardware behavior. Every meter is a real instrument. Every number we claim, we measure.

Most saturation plugins give you a color. CREOSOTE gives you the room: a tape machine with ten formulas on the shelf, a tube stage you can re-valve, eight vintage compressors with their true circuits, a summing amp with real iron on the output — laid out on a control-room console rendered with physically-baked light, down to the bulbs behind the meter glass.

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CREOSOTE is calibrated and available for immediate deployment. Integrate the full analog record chain directly into your laboratory.

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GRIT — The Tape Machine

Seven transports. Ten reels. Three speeds. One WEAR knob that ages the whole transport at once.

  • · 7 machines — Studer A800, Ampex ATR-102, MCI JH-24, Otari MTR-90, Ampex MM1200, Scully 280, Tascam.
  • · 10 tape formulas — Ampex 456/406/499, Quantegy GP9, Scotch 250/996, BASF SM468, RTM SM911/SM900, ATR Master.
  • · Calibration — ¼" to 2" 24-track, 7.5/15/30 IPS, +3/+6/+9 cal, over/under bias.
  • · Calibrated Saturator — 0 VU = −18 dBFS. 0.39% THD at operating level.
  • · Program-Dependent Hysteresis — The tape "warms up" and remembers soft attacks and lingering tails.
  • · Record-Amp Slew Limiting — The HF transient rounding of a real record amplifier.
  • · Comb-free MIX — The dry blend leg runs through a matched oversampling path.
AMBER — The Tube Stage

A three-stage valve amplifier you can re-tube, re-bias, and re-era.

  • · Preamp — 12AX7, 12AT7, 12AU7, EF86.
  • · Power — EL84, EL34, 6L6, 6V6, KT66, KT88.
  • · Rectifier — 5Y3, GZ34 — with era-true sag.
  • · Per-Stage Voicings — Tweak per-stage condition, bias point (cold/normal/hot), plate voltage, and load.
  • · Hardware Modes — Direct, transformer-coupled, and Pultec-style passive output paths.
  • · Calibrated Drive Law — The whole knob is useful with RMS auto-makeup holding your level steady.
COMPRESS — Eight Compressors, True Circuits

Not eight presets of one compressor — eight true hardware topologies.

  • · The Models — LEVEL CELL (opto) · BLACK FET (1176) · ALL BUTTONS · FAIR MU (vari-mu) · SSL BUS · NEVE BRIDGE · PYE PWM · TG ZENER.
  • · True Topology — Opto, vari-mu, bridge, and PWM units run feedback. FET, VCA, and Zener units run feedforward. Force either topology in TWEAK.
  • · Infrastructure — Always-on lookahead with full delay compensation, sidechain filtering, and a real edgewise gain-reduction meter.
SUMMING & STAGING — The Console Bus

Character saturation, stereo glue, and a ceiling clipper — all anti-derivative anti-aliased (ADAA), all measured.

  • · Summing — PREGAIN, WIDTH (M/S), BALANCE. The last analog bus before the wide world.
  • · IRON — A modeled output transformer (off / subtle / rich) with three voicings (British console, American punch, broadcast desk) built as a flux integrator with magnetic remanence, not an EQ curve.
  • · Staging — Honest INPUT/LEVEL staging. Limit lookahead ceiling pouring oil-damped reduction top-down. AUTO LEVEL for one-button unity out.
  • · TONE — A direction-aware tilt. Darkening reaches into the presence region to warm rather than dull. Brightening lifts the air band and tightens lows.
OUTPUT EQ — The Chart Plate

Eight bands of dynamic EQ drawn on a machine-tool chart: cream card, blue graticule, red pen.

  • · Dynamic Architecture — Per-band frequency, gain, Q, plus dynamic gain with attack and release — each band can duck or expand itself against the signal.
  • · Visual Feedback — Pre and post curves displayed together (the dashed blueprint and the live red line) with the dynamic delta filled between them.
  • · Decramped, Analog-Matched Filters — Standard digital EQs cramp against Nyquist. CREOSOTE's shelves and bells are matched to their analog prototypes to within 0.16 dB at 20 kHz.
TRANSPORT & LFO — Phosphor Logic

A real transport with scrape-band noise, head-gap width, and dropout aging driven by WEAR.

  • · The Oscilloscope — Wow and flutter with per-channel phase offset is authored on the AGE LFO oscilloscope page.
  • · Shape Vectors — Five shapes including sample-and-hold, rate, depth, smoothing, and phase.
  • · Hardware CRT — Drawn live on a green phosphor CRT with an amber etched graticule.

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Unit Variance

No two racks alike

Real hardware never matched. CREOSOTE models that: pick UNIT 1 through 16 and the instance adopts that unit's component tolerances — filter corners drift up to ±5%, drive points shift fractions of a dB. Deterministic, recall-safe, and loudness-matched to ±0.005 dB.

Punch Protection

Saturate the sustain

Heavy drive usually costs you your transients. PUNCH detects onsets and momentarily eases the drive into the saturators (level-compensated, wet-path only) so the crack of the stick passes clean while the body stays thick. Measured: attacks pass ~1.4 dB cleaner at FULL.

Photographed UI

The Console

Not a picture of a console — it's a console, photographed. Panels, caps, and instruments rendered in Blender Cycles under one locked studio light. Real bulb-backlit VUs, chunky bronze selectors, and light that spills organically across the plate.

Session Safety

Versioned DSP

Every audible improvement in CREOSOTE ships behind a DSP version gate. A session saved on any previous version recalls bit-identical while new sessions get the newest behavior. Enforced with an automated 36-pass-bar audio regression suite on every build.

Transparency

Measured, Not Marketed

Marketing says "warm." We say: 0.39% THD at 0 VU; alias floors driven down 16–35 dB by ADAA; EQ matched to analog prototypes within 0.16 dB at 20 kHz; comb-free wet/dry blending verified by null test.

The Library

Album-Anchored Presets

Starting points voiced from the recording chains of records you know: Thriller, The Dark Side of the Moon, Rumours, Aja, Kind of Blue, Random Access Memories, Pet Sounds — plus the THETA artist set. All loudness-matched to unity.

ARCHITECTURE

  • Sample Rates44.1–192 kHz; behavior verified by measurement at 48/96 kHz.
  • Oversampling2× / 4× / 8×, clean minimum-phase or vintage character.
  • Efficiency~6.6% of one core, full chain @ 2× / 48 kHz. Bypassed modules near-zero.
  • InterfaceResizable 50%–200%, crisp at retina resolutions.

TECHNICAL_TARGETS

  • FormatsAU · VST3 (AAX in preparation).
  • PlatformmacOS (Apple silicon + Intel).
  • LatencyFixed, fully host-compensated (lookahead + oversampling).
  • Session SafetyVersioned DSP — prior sessions recall bit-identical.
THETA AUDIO RESEARCH // 2026 LAB NOTE #004 // CREOSOTE_SHIPPING_v0.4.112