The TC Electronic Gold Channel was designed as a microphone preamplifier and signal refinement processor in one unit. Its basic signal path allowed a microphone to be connected directly to the unit, with the processed signal then sent to analogue or digital recording equipment. Immediately after the gain stage, the incoming analogue signal was converted to digital through 24-bit A/D converters, allowing the TC Electronic Gold Channel to apply its internal DSP processing before outputting the result in multiple analogue and digital formats.
The TC Electronic Gold Channel contained two channels, making it suitable for individual mono recording, dual-mono work, or linked stereo operation. This was intended for recording situations where one high-quality channel might often be required, while still providing a second channel for stereo recording, dual-source recording, or linked processing. The TC Electronic Gold Channel could also be used after recording, since its mic/line and digital inputs and outputs allowed previously recorded material to be sent back through the unit for additional processing, including digital-in to digital-out operation.
The processing architecture of the TC Electronic Gold Channel was built around a flexible processing grid. Each channel provided four assignable processing blocks, and the available algorithms could be placed freely within those blocks. This allowed the user to decide the order of processing, such as applying equalisation before dynamic equalisation, or using de-essing before compression. In addition to the two-channel processing modes, the TC Electronic Gold Channel could route all eight processing blocks internally in series, or split the Channel 1 input signal to both processing channels.
The TC Electronic Gold Channel operated with 48kHz and 96kHz high-resolution processing tools. In 96kHz mode, the user could operate one channel with access to three processing blocks, or use both channels with one processing block available per channel. When 96kHz mode was selected, the assigned processing ran internally at high sample rates.
The TC Electronic Gold Channel included a range of dynamics, equalisation and utility processing. The expander and gate section provided two types: Easy Gate and Advanced Expander. Easy Gate was intended for removing low-level noise, including use on percussive instruments. Advanced Expander added DSP-based control options including a sidechain key filter and the ability to use Channel 2 as a sidechain source when processing Channel 1.
The compressor section of the TC Electronic Gold Channel provided two distinct compressor types: Soft Compressor and Vintage Compressor. The Soft Compressor included standard compressor controls such as threshold, ratio, attack and release, with the additional option of using Channel 2 processing as a sidechain input when loaded in Channel 1. The Vintage Compressor was designed to emulate classic analogue compressor behaviour. Instead of a conventional threshold parameter, it used a fixed internal threshold, with Input Drive and Output Gain controlling the overall operation. The Vintage Compressor was described as a feedback-style compressor rather than a feed-forward design.
The equalisation section included two types of EQ. The five-band fully parametric equaliser covered 20Hz to 20kHz, with ±18dB gain range and variable bandwidths. The second EQ type, Vintage EQ, was designed to emulate classic analogue equaliser curves and presented its controls in a knob-based style inspired by older analogue equipment.
The Tools section added further processing options for tracking and mixing. Dynamic EQ operated as an extended de-esser, with broader frequency range, variable bandwidth, attack and release controls. It was intended to remove unwanted frequencies dynamically, affecting peaks rather than applying static equalisation across the whole sound. A simpler version, called De-Esser, was also included and could use sidechain input from Channel 2 when loaded in Channel 1. The Digital Radiance Generator added sub-harmonics and was compared in the original description to some of the characteristics associated with tube equipment.
The TC Electronic Gold Channel also included M/S encoding and decoding before and after processing. This allowed mid and side signals to be processed separately, using a technique often associated with broadcast and film recording. The supplied description explains the method as using a cardioid or hypercardioid microphone for the mid signal and a figure-eight microphone for the side signal. The TC Electronic Gold Channel also provided delay for time alignment, with up to 340ms delay available on each channel.
Preset storage was a key part of the TC Electronic Gold Channel. All settings could be stored and recalled from preset locations, and the unit included 100 factory presets. Some factory presets were designed for specific tracking situations, while others were created for particular microphone types. Presets could be recalled as total recalls, restoring the whole unit, or as partial recalls where only processing or parts of the processing were changed. User settings could be stored internally in 100 preset locations, or dumped to an optional PCMCIA card for transfer to another TC Electronic Gold Channel.
The TC Electronic Gold Channel provided an extensive range of input and output formats. Its analogue I/O included mic and line-level inputs, plus line-level outputs. Its digital I/O included AES/EBU, S/PDIF and optical S/PDIF or ADAT connections. It also included word clock input and MIDI In, Out and Thru. All audio outputs were available simultaneously, and the internal software routing allowed the unit to be used for daily conversion and I/O format tasks as well as microphone preamplification and processing.
Retrospectively, the TC Electronic Gold Channel reflects a late-1990s approach to studio front-end design, where microphone preamplification, conversion, dynamics, equalisation, routing, recall and digital interfacing were brought together in one rackmount device. Rather than offering a traditional analogue channel strip layout, the TC Electronic Gold Channel used a digital processing grid, preset-based recall and multiple simultaneous output formats, making it a hybrid recording front end and digital signal processing unit.
Features
- Two-channel digitally enhanced microphone preamplifier and signal processor
- Mic, line and digital inputs and outputs
- 24-bit A/D conversion immediately after the gain stage
- 48kHz and 96kHz internal processing options
- Four assignable processing blocks per channel
- Flexible processing grid with freely assignable algorithm order
- Internal routing of all eight processing blocks in series
- Option to split Channel 1 input signal to both processing channels
- Linkable stereo operation
- Easy Gate and Advanced Expander processing
- Soft Compressor and Vintage Compressor processing
- Five-band fully parametric equaliser
- Vintage EQ algorithm
- Dynamic EQ with extended de-essing functions
- Dedicated De-Esser algorithm
- Digital Radiance Generator for sub-harmonic generation
- M/S encoding and decoding before and after processing
- Delay for time alignment up to 340ms per channel
- 100 factory presets
- 100 internal user preset locations
- Preset storage and transfer using optional PCMCIA card
- Analogue, AES/EBU, S/PDIF and optical digital I/O
- ADAT optical input and output support
- Word clock input
- MIDI In, Out and Thru
- Simultaneous audio outputs
