Rare Marantz CD-3577 Single Disc CD Player, Class DX 1-Bit Conversion

Excellent / Mint condition, Like new, Working as it should, Fully serviced, New belt installed

No remote but any Logitech harmony type remote will work with this unit

Pretty rare model in the sense that it does not have a typical DAC like a normal CD Player, This unit uses a "Revolutionary Advanced digital technique known as Class DX 1-Bit Conversion" please see last two pics for a dealers sheet with tons of info regarding this model and technology, More specs, details and info about this model / technology can also be found below

**Please View and read the last two pics in this listing of the dealer sheet carefully and fully for exact and accurate info regarding this model as it comes directly from the people that manufactured it**

Manufacturer's Specifications

Frequency Response : 4 Hz to 20 kHz, ±0.5 dB.

THD : Less than 0.005% at 1 kHz.

S/N : Greater than 100 dB.

Dynamic Range : Greater than 96 dB.

Output Level : Normal, 2 V, variable; digital coaxial, 0.5 V peak to peak, ± 0.1 V.

Number of Programmable Selections : 20

Power Consumption : 120 V a.c., 60 Hz, 13 watts

Dimensions : 16 15/16 in. W x 4 3/8 in. H x 12 7/8 in. D (43 cm x 11.1 cm x 32.6 cm)

Weight : 9.3 lbs. (4.2 kg)

Original Price: $450 


Brief explanation I found from the net (Fully detailed and explained in dealer sheet pics) :

The Marantz CD-3577 serves as a good illustration of how the much-discussed, one-bit D/A conversion system can be used to produce a superb-sounding CD player whose low level linearity rivals that of players costing several times this handsome unit's relatively modest price. Different manufacturers have come up with different names for the one-bit D/A conversion process. Marantz chooses to call their approach Class DX one-bit conversion. As Marantz describes the system, Class DX is intended to solve both low-level non-linearity and zero-crossing distortion (the error that occurs when signal polarities change). It does so by first increasing the sampling rate, with a digital filter, to 256 times the CD's sampling rate of 44.1 kHz. A computerized interpolater then changes the pulse code to pulse-width modulation by monitoring changes in value rather than discrete values of each digital word. Timing is quartz-controlled.

The pulse-width modulation (PWM) signal then goes through a low-pass filter that changes it to analog, continuous-waveform audio. All one-bit systems introduce higher residual noise levels than do conventional ladder-type D/A converters. Accordingly, a process known as noise-shaping is required. In the Marantz CD-3577, Third-order noise-shaping is used. This process moves any generated or remaining noise components up and out of the audible frequency range, Resulting in a signal to noise ratio rivaling conventional DAC's


Unit will ship padded and wrapped in box with tracking and insurance via Canada Post regular parcel


Thanks


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