SPRZEDAM Referencyjny High End przedwzmacniacz
Denon DAP-5500 Preamp jest w super stanie , technicznie 100% sprawny , bez napraw , modyfikacji , w fabrycznym stanie . Przedwzmacniacz ma zabudowany DAC bardzo dobrej jakosci na podzespolach BurrBrown PCM56P-K !!!
Gra fantastycznie .
Digital Audio Preamplifier
http://www.thevintageknob.org/denon-DAP-5500.html
The DAP-5500 is a preamplier + digital converter combination : three analogue and three digital inputs, two analogue and one digital tape loops, balanced and s-e analogue outputs plus a DAC out direct (analogue) out of the digital section which bypasses all the (analogue) preamp functions and switches.
The d/a conversion is done with four BurrBrown PCM56P-K 16bit converters in push-pull, two per channel ; filtering is done at 4x oversampling, low-pass filters are 7th order.
Opto-couplers from Hewlett-Packard link everything in the DAP-5500 : two between the digital filter's outputs and the d/a converters, two more between the filters' sync'ing (digital side) and the error correction circuits (analogue side).
Analogue inputs benefit from a quadruple push-pull of PNP/NPN FETs and so does the DAC out analogue output ; the preamplifier's attenuator is a 4-gang from (probably) ALPS.
Specifications
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.002%
Input sensitivity: 150mV (line)
Signal to noise ratio: 116dB (line)
Output: 1V (Pre out)
Digital inputs: optical, coaxial
Dimensions: 434 x 133 x 380mm
Weight: 13.7kg
DIGITAL section
Inputs :
1x optical (digital 1)
2x coaxial (digital 2 & 3, 75 Ohm / 0,5V p-p)
1x coaxial (DAT, 75 Ohm / 0,5V p-p)
Outputs :
1x coaxial (DAT rec-out, 75 Ohm / 0,5V p-p)
Sampling frequencies :
32 / 44,1 / 48Khz
D/A :
4x 16Bit Superlinear converter, symmetrical array
Digital filter :
4x oversampling, 7th order CALP low pass filter
Frequency response :
2Hz...20Khz (± 0,2dB)
S/N ratio :
110dB
Dynamic :
97dB
THD :
0,002% (1Khz)
Separation :
100dB (1Khz)
ANALOGUE section
Inputs :
2x unbalanced LINE (one is doubled on front)
1x balanced LINE
2 tape
Outputs :
2x tape
1x unbalanced pre-out (doubled on front)
1x balanced pre-out
1x DAC out (= DAC bypass)
Max. output level :
30V (balanced)
15V (unbalanced)
Frequency response :
1Hz...300Khz (+0/-3dB)
S/N ratio :
116dB
THD :
0,002% (20Hz...20Khz, 5V)
General
PC :
25W
Dimensions :
43,4 x 13,3 x 38cm
Weight :
13,7kg.
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