Quad 77 CD Player Pre Production Unit 14!

Lovely Quad CD77 (7712) CD player. Nextel finish. This is the Quad Bus version so you will need a 77 Integrated or a 77 Pre to use with the CD player. It does not have standard RCA outputs. These originally retailed at £595 in 1995 which was a lot of money. The player was well reviewed in the hifi press and found to be a worthy successor of the legendary Quad CD67. This example is particularly notable as it has a sticker on the back identifying it as pre production example 14. The player is in good cosmetic condition although there is the odd mark and rub mark which we have tried to show in the photos. This is particuarly noticeable on the top when viewed from certain angles which the pics do not really capture. It reads discs nicely, operates smoothly and sounds great. There is no remote. Basic commands can be sent through the buttons on the front panel or the unit can be controlled by the Quad 77 remote if you have one for your system.

 

The Quad 77 compact disc player uses a Philips CDM 12.4 transport and Delta Sigma modulation decoder to provide a player which has a measured performance very close to the theoretical optimum and with very high tolerance of damaged or faulty discs.

The CDM 12.4 transport is extremely well engineered and produces a very low error output even with badly marked or out of specification discs. It is also very quiet in operation.

Delta Sigma modulation is a variation on Bitstream technology. The chief advantage of the Delta Sigma chip is that the accuracy of conversion is not dependent upon the accuracy of the masted clock and is thus not susceptible to clock jitter, which makes the task of the design engineer somewhat easier. However, with digital technology it is not the terminology which matters as much as quality engineering.

The Quad 77 is available in bus powered and mains powered form. The bus powered unit can only be used as part of a Quad 77 system and is supplied with a Quadlink cable. The mains powered version comes with phono and bus connections and standard remote control.

Specifications

Disc format: CD

Digital converter: CS4328-KP, 18 bit Delta Sigma

CD Mechanism: CDM 12.4

Frequency response: 20Hz to 20kHz

Signal to Noise Ratio: 100dB

Total harmonic distortion: 0.002%

Line output: 2V

Dimensions: 321 x 65 x 300mm

Weight: 3.5kg

Finish: carbon or nextel front panel

Year: 1995