The LOCK Family

The self-learning engine and quality mark of the PX drum family — six PX processors and the LM-2 Latency Matcher carry it. SOUNDLOCK listens to the real instrument in the real room, derives its processing, then locks it for the show. It is the origin of the LOCK doctrine: learn from evidence, then hold.

The next-generation feedback technology of TZ-12 TraceZero. GAINLOCK does not treat feedback as "a steady tone" — it demands proof of a closed loop in three stages: a spectral candidate, a jury of independent signatures (frequency lock, dB-linear exponential growth, missing harmonics, persistence), and finally loop evidence — sitting inside the loop, it correlates its input against its own recent output. A fan, an organ, a flute cannot produce loop evidence. They are never touched.
The bit-transparency rule: while no loop is confirmed, not one sample of the signal path changes — no broadband "auto-EQ" behavior slowly discoloring the mix. Designed modes: LIVE (0 ms, IEM-safe) and SURGICAL (3–5 ms, designed to cut a detected tone before it reaches the loudspeaker); an optional SPEECH mode applies a slight frequency shift — a method proven in the literature since 1964, inaudible on speech.

The channel is locked. Your voice is the key.
The channel technology of SC-16 SmartControl. A FLOORLOCK channel has two states — LOCKED and UNLOCKED — and its threshold is never a fixed number: it rides the room's noise floor live, floor plus margin, so when the room gets louder the threshold climbs with it. Closure is true digital zero — not "quieter", silent. And SC-16 stays a zero-latency processor: no lookahead, ever.
VoiceKey makes the unlock decision about speech evidence, not just level: the channel opens instantly on level — the first phoneme is preserved — and if proof of speech (voiced harmonic structure or a sibilant signature, then syllable rhythm) does not arrive within a short probation window, it locks again. In the acceptance run, 12 of 12 spoken phrases unlocked and held; applause, a table hit, a dropped microphone, a held 440 Hz note, an HVAC fan and a cough were all locked out again in well under 600 ms. Honest limits, stated plainly: a sustained harmonic source in the voice band — a low organ pedal, a held bass note — is voice to any measurement, and no technology can tell a loudspeaker playing a human voice from the real thing.

Your phone becomes the measurement microphone — zero installation, a browser and a QR code. The system plays a sweep, the phone listens, and the engine extracts the impulse response: phase, group delay, arrival time in milliseconds and meters, polarity, and A/B overlay for sub/top alignment with a suggested alignment delay. Bench acceptance is passed — delay repeatability ±0.06 ms, clock drift stable at ~8 ppm; console field tests are next. Honest scope: a timing, phase and alignment tool — not a calibrated SPL meter or an absolute EQ analyzer: a phone microphone is not flat, but timing does not care about microphone color. It replaces the 80% of alignment jobs that were never worth setting up a full measurement rig for.