The Meridian
563 Digital to Analogue Converter provides three digital inputs and one optical
input, and uses a high definition dual differential digital to analogue Delta
Sigma converter to give up to 19 bit precision. Dual phase lock loops ansure
low jitter, and balanced Class A output amplifiers give extremely low
distprtion.
The Crystal
Delta Sigma 1-bit DAC is designed as a one chip solution for stereo decoding,
including its own high performance digital filter, oversampling and noise
shaping. By using a pair of decoders in differential mode for left and right
channels, Meridian claims a unique implementation giving a precision up to
19-bit resolution. A front-panel switch toggles a software phase inversion at
this stage if the user desires, with the handbook pointing out that 'in some
circumstances this can give a noticeable improvement in realism'.
NE5534 ICs,
bandwidth-limited via a 38 kHz single pole filter, feed Class A discrete output
stages which provide two balanced outputs via XLR connectors as well as the two
standard phono outputs. Each output circuit utilises A06/A56 high current
driver transistors, easily capable of driving long cables with a source
impedence of 12 ohms.
Specifications
Conversion: Dual differential Delta Sigma, 64 times
oversampled at 2 bits per channel giving 19 bits resolution
Jitter: less than 1 ps rms
Noise and
Distortion: less than -95 dB
Inputs:
D1 -
D3 digital audio : unbalanced phono
SPDIF input at 75 Ω
AES/EBU
connection via optional XLR connection on D1
Optical
disgital audio high speed
TOSLINK
input
Outputs
Unbalanced
analogue output 2 V nominal
Balanced
anlogue output on 2 x XLRs
Display:
illuminated legends for EQ, Lock, 44,1 kHz, and Phase
Finish: Black textured enamel and glass
Dimensions
(H x W x D): 88 x 321 x 332 mm (3.46" x 12.64" x 13.07").
Weight: 6.4 kg (14 lbs).