dAD7

The Cyrus dAD7 followed the lead of our world class Discmaster/Dacmaster two box player, sharing many of its advanced techniques and benefiting directly from Cyrus’s over ten years experience in CD technology. It was a conscious decision to use multi-bit technology as opposed to low-bit DACs as a result of an involved subjective and objective evaluation process that took over three years of research to complete.

The dAD7’s 18 bit Digital to Analogue conversion module running at 8 times base sample rate achieves well over 100 dB true dynamic range with negligible distortion. Handed down from Dacmaster’s development this implementation results in superior resolution of the low-level signals that in turn enables the system to reproduce the subtle nuances of the music and the atmosphere of the recording venue accurately.

The high stability, low jitter system clock module originally developed for the Cyrus Discmaster is featured in the dAD7 to ensure that low level information is not masked by time related distortion artefacts. Jitter related aberrations produce a complex type of anharmonics distortion that results in smearing and loss of clarity in the mid-range.

Extensive inter-stage Power supply decoupling together with star-earthing techniques are responsible for isolating the sensitive analogue stages from high-speed digital circuits. The net result of this measure is the total absence of Power supply imprint onto the signal lines that can account for loss of coherent musical timing.

The dAD7’s monolithic laser optics with its precision glass lens system affords a far superior degree of consistency, eliminating potential human error in the laser alignment process during manufacturing. Quite separately, this construction facilitates error-free information retrieval from the disc, which improves overall performance of dAD7. A highly tuned, self-centring suspension mechanism isolates the sensitive disc reading mechanism from the environment. This minimises vibration induced disc reading errors which can introduce inaccuracies in the data retrieved from the disc.

Technical Information

Electrical

Transport – Integral Isolated Loader Mechanism using ultra fast CDM9
with monolithic glass LASER assembly

Outputs – Stereo audio and Coaxial SPDIF
Power Supply – 13 fully regulated power supplies
External – Highly regulated PSX-R upgradeable
Display – Custom LCD with subtle green back lighting
Remote Control – Full function remote control facility
Communications – MC-BUS System BUS

Specifications

Audio output – 2V rms.
Frequency response – 20Hz-20kHz
THD – <0.007% (ref. 1kHz, -10dB)
S/n ratio – 106dBA
Dynamic Range – >100 dB (20 Hz to 20 kHz)
Channel separation – >100dB (1kHz), >80dB (20kHz)
Digital output – 500mVpp SPDIF
Clock Jitter – <100pS
Power Consumption – 16W (12W Standby)
Weight – 3.5 Kg
Dimensions – (H x W x D) 78 x 215 x 360 (mm)
Height (dust cover open) – 230 (mm)
Finish – Black

Designed & Engineered in the United Kingdom