TDR Ultrasonic
by Tokyo Dawn Labs · Filter · Ultrasonic content filter
Not rated yet
TDR Ultrasonic controls the build-up of ultrasonic content in oversampled recording, processing and playback chains.
It has a linear phase filter, a dynamic ultrasonic gate and a Bat Mode for hearing ultrasonic content, for €30 (about $34.07).
Best for: Mastering, Mix Bus. Genres: all genres.
Keywords: oversampling, linear-phase, mastering, full mix, mixing, A/B compare, analog-sounding, built-in analyzer, bus processing, heavy, mix bus, resizable UI.
What it does
TDR Ultrasonic "controls the accumulation of ultrasonic content in oversampled recording, processing, or playback chains." The idea is to stop inaudible high-frequency energy from reaching nonlinear stages, where it would cause intermodulation distortion.
- Filter: linear phase with a continuously variable slope, enforcing infinite attenuation at Nyquist.
- Ultrasonic Gate: a dynamic gate that filters ultrasonic content only when it is present.
- Bat Mode: shifts ultrasonic content down into the audible range so you can check it by ear.
- HF noise: a high-frequency noise generator that dithers ultrasonic content, as an alternative to filtering.
- Analysis and A/B: a precise ultrasonic analyser and a Bypass All switch for comparing every instance across a mix.
- Sample rates and interface: support for sample rates up to 20 MHz, in a freely resizable, hardware-accelerated interface that can go full screen.
The current version is 1.0.6. The free demo has no time limit but blocks automatic recall. Updates are free.
Source: Tokyo Dawn Labs product page
When to use it
Ultrasonic is the better pick for sessions at high sample rates or with many oversampled plugins, where it keeps inaudible energy out of later saturators and converters. Unlike Volcano 3 or FilterFreak, it does nothing creative in the audible range. Compared with the high-cut in Pro-Q 4, it adds a dynamic gate, Bat Mode for hearing what it removes, a noise-dither option and one-click bypass of every instance. It is the high-end partner to TDR Infrasonic and the cheaper of the two.
- Best for: mastering and high sample-rate mixing chains with heavy oversampling or analog-modelled saturation.
- Genres: any.
- Look elsewhere if: you work at 44.1 or 48 kHz without much oversampling, where you may not need it, or you want a creative filter; Volcano 3 suits that.
Where to buy
- AudioDeluxe: $15 (regular $30)
- Plugin Boutique: $30
- Tokyo Dawn Labs: $34.07 (€30 converted to USD (ECB rate, 29 Sep 2026))
Tutorials and reviews
Similar plugins
- TDR Infrasonic by Tokyo Dawn Labs · Low-frequency high-pass filter · $20
- Linear Phase EQ by Waves · Linear-phase EQ · $32.91
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