The TC Electronic Triple-C was built around three compression modes: Multi-band, Full-band and Envelope. Its central concept was to give users different ways of controlling dynamics depending on the source material, rather than forcing every signal through a single full-range compression approach. The Triple-C combined digital processing with an analogue-style user interface, presets and MIDI automation, making it suitable for studio and live production environments where repeatable compression settings and external control were required.
In Multi-band mode, the TC Electronic Triple-C divided the incoming signal into three frequency bands. Compression could then be applied independently within those user-defined frequency areas. This allowed the Triple-C to compress only the areas that required control, rather than allowing one dominant part of the frequency spectrum to determine the compression of the entire signal. TC Electronic described this as a more intelligent way of working with source material, particularly where peaks in one frequency area could otherwise control the overall gain reduction.
The Multi-band mode was intended to reduce common artefacts associated with traditional full-band compression. For example, when compressing vocals with a conventional compressor, mid-range energy can cause the whole signal to be compressed, which may reduce high-frequency content unnecessarily. By allowing independent compression across the three bands, the Triple-C could preserve high frequencies while still applying compression to the lower and mid-frequency areas. This approach also allowed the Multi-band mode and Spectral Controls to be used together to adjust the spectral balance of the processed signal dynamically.
The TC Electronic Triple-C also included Compression Style parameters within Multi-band mode. These settings were designed to tailor the behaviour of the three-band compression system to different sources. Listed Compression Style parameters included Vocals, Speech, Bass, Guitar, Music, Horns, Percussive Instruments and HF-Sense. The HF-Sense style could be used to make the high compression band operate as a de-esser, while allowing compression to continue in the lower and mid bands.
Multi-band compression on the Triple-C was applicable to single sources and grouped material. TC Electronic highlighted uses including de-essing, preserving top-end, rolling off low-end rumble, bass compression and group compression. The Low-band level could be used to reduce low-frequency rumble, while bass processing could allow higher frequencies to pass while applying compression to lower frequencies for control and sustain. For grouped sources, the independent three-band compression system was intended to maintain transparency by preventing one frequency area from dominating the gain-reduction behaviour.
The Envelope mode of the TC Electronic Triple-C allowed the dynamic envelope of an incoming source to be altered by changing gain at the attack and release points of the original signal. This mode was especially intended for percussive material. TC Electronic described applications including adding gain to the attack of a snare hit, and creating level changes for heavily processed breakbeats.
Full-band mode provided a more traditional single-band compression approach. TC Electronic described examples including a slow attack and fast release vocal setting for a more forward vocal treatment, and percussive rhythm guitar processing. This gave the Triple-C a conventional compression mode alongside its multi-band and envelope-based processing.
The Triple-C also included a Peak Sense mode. By default, the compressor responded to average levels, but when Peak Sense was active, it became responsive to peaks. This was intended for percussive source material such as snare drum, where a short attack and peak-sensitive behaviour are more relevant than average-level detection.
The TC Electronic Triple-C included 50 factory presets in a ROM bank, with 100 RAM locations for user presets. Its Make Up Gain section included Absolute Gain indication on the LCD metering, allowing the user to view gain flow through the processor and compensate level and frequency response. The unit also included a Digital Radiance Generator, designed to add second harmonic distortion as a tube-simulation effect.
Sidechain functionality formed another part of the Triple-C design. TC Electronic listed applications including using a kick drum to control compression on a bass guitar through the external sidechain input, inserting an external equaliser into the sidechain for frequency-sensitive compression, and stereo coupling two Triple-C units by crossing the direct outputs and sidechain inputs.
The Spectral Adjust section used Lo-Band and Hi-Band controls to adjust the output level of the low and high frequency bands separately. TC Electronic described this as useful for opening up vocals in a mix. MIDI controller support allowed all effect parameters to be accessed via standard MIDI controllers, enabling real-time control and automation from sequencers or other MIDI devices.
The Triple-C included S/PDIF digital input and output on RCA phono connectors, supporting 24-bit S/PDIF, EIAJ CP-340 and IEC 958 formats, with output dither available at 24, 20, 16 and 8 bits. Digital sample rates were 44.1 kHz and 48 kHz, with a processing delay of 0.1 ms at 48 kHz excluding optional look-ahead delay. Analogue input and output were handled through balanced 6.35mm phone jacks. The analogue inputs used 24-bit, 128-times oversampling bitstream A-D conversion, while the outputs used 24-bit, 128-times oversampling bitstream D-A conversion
Features
- Multi-band compression with three independently processed frequency bands
- Full-band compression for traditional single-band dynamics control
- Envelope compression for altering attack and release characteristics
- Compression Style parameters for source-specific multi-band processing
- HF-Sense mode for de-essing applications
- Peak Sense mode for peak-responsive compression on percussive material
- Spectral Adjust controls for low-band and high-band output level adjustment
- Digital Radiance Generator for second harmonic distortion
- External sidechain input for sidechain compression applications
- Stereo coupling possible using direct outputs and sidechain inputs
- 50 factory presets and 100 user preset locations
- Absolute Gain indication on LCD metering
- Standard MIDI controller access for real-time control and automation
- S/PDIF digital input and output
- 24-bit A-D and D-A conversion