The Sony DTC-55ES was released in 1990 as a Sony ES Series Digital Audio Tape deck, placing DAT recording into a domestic hi-fi component format at a time when the format was still relatively new outside professional and semi-professional recording environments. The Sony DTC-55ES was a 2-channel stereo DAT recorder designed for digital recording and playback using the Digital Audio Tape format, with rotary head recording, multiple sampling frequencies, digital and analogue connectivity, and front panel access to programme, identification and transport functions.
The Sony DTC-55ES used a rotary head system running at 2000rpm and supported both standard and long-play tape operation, with tape speeds of 8.15mm/s and 4.075mm/s. Maximum recording time was specified at 240 minutes. The deck supported 48kHz, 44.1kHz and 32kHz sampling frequencies, giving the Sony DTC-55ES compatibility with common DAT recording modes of the period, including digital input recording at CD-standard 44.1kHz and DAT standard 48kHz operation.
Conversion was handled by 1-bit A/D and 1-bit D/A converters. The Sony DTC-55ES specified a frequency response of 2Hz to 22kHz, a signal-to-noise ratio of 92dB, a dynamic range of 92dB and total harmonic distortion of 0.005%. These figures placed the Sony DTC-55ES firmly within the technical expectations of early 1990s DAT recording, with performance figures notably beyond those typically associated with analogue compact cassette decks.
The front panel of the Sony DTC-55ES reflected the operational complexity of DAT compared with analogue tape. Alongside the main transport controls, the Sony DTC-55ES included controls for counter mode and reset, AMS track access, review and cue, fader operation, repeat, skip play and margin reset. The deck also provided dedicated controls for Start ID, Skip ID and End ID writing and erasing, allowing the user to manage track identification and navigation data on recorded DAT tapes.
The Sony DTC-55ES included both coaxial and optical digital inputs, with optical digital output. This allowed the deck to be connected to compatible digital sources and recorders, while also retaining analogue input and output operation for use with conventional hi-fi systems. A front panel input selector allowed selection between analogue, optical and coaxial input sources. The deck also included a headphone output with level control and a left-centre-right record level control.
As an ES Series component, the Sony DTC-55ES was built as a full-width hi-fi separate, with a black front panel, large display window, tape loading compartment, numeric keypad and remote control support. The model measured 115mm x 470mm x 330mm and weighed 8.3kg, giving it the size and construction of a serious domestic digital recorder rather than a compact portable DAT machine.
The Sony DTC-55ES belongs to the first generation of DAT recorders that brought digital tape recording into the home and project studio environment. While DAT did not replace analogue compact cassette as a mass-market domestic format, machines such as the Sony DTC-55ES became important as digital mastering, mixdown and archiving recorders during the early 1990s, particularly where users needed a compact digital recording format with direct digital connectivity.
Features
- Digital Audio Tape recorder released in 1990
- 2-channel stereo DAT recording and playback
- 2000rpm rotary head recording system
- Standard and long-play tape speeds
- 48kHz, 44.1kHz and 32kHz sampling frequency support
- 1-bit A/D conversion
- 1-bit D/A conversion
- Coaxial and optical digital inputs
- Optical digital output
- Start ID, Skip ID and End ID writing and erasing controls
- AMS, review, cue, fader, repeat and skip play functions
- Remote control supplied