HD650+CORDA OPERA 看得见的声音

Pan · 发表于 2008-7-13 10:17:41

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这是个人听过配合HD650最是美满的一套系统。分 digital USB-input 版和无DAC版，我试的一台是无DAC版搭配HD650，我听到的是：“无框的空间感，看得见的声音”。从这个组合里，那些对HD650的一切赞美，都得到证实。
想国内HD650的使用者成千上万，却没引入 Corda 这个牌子的耳扩，感到可惜。

2 headphone outputs
( 0/120 Ohm output impedance ).
Maximum output 13V / 500 mA.
Gain switch. Maximum gain factors -5 / +8 dB.
Crossfeed filter switch:
1. Stereo / crossfeed OFF
2. Crossfeed ON

2 pairs of analog inputs
Input impedance 12 kOhm

1 digital S/PDIF input
1 digital USB-input
1 pair of volume-controlled preamplifier outputs.

Gold-plated input jacks.
Silver plated headphone jacks (Neutrik).
Silver plated heavy duty switches
Alps Blue potentiometer for volume control.
25 Watts toroidal transformer for the analog section.
7 Watts toroidal transformer for the digital section.
110V and 220V mains power switchable.
Power uptake 12 Watts
Built-in groundloop breaker.
Schottky rectifying diodes in the power supply.
Double regulated voltage lines.
Low impedance electrolytic buffer capacitors (Nichicon).
Total Buffer capacity 80.000 uF.
Bypass capacitors in the power supply.
Polystyrol and polypropylen capacitors in the signal path.
Metalfilm resistors in the signal path.
Double sided PCB
LM6171 opamps biased into class-A using LM334 current sources.
2 BUF634 buffer amplifiers at left and right headphone output channel.
(Active) balanced headphone ground
3 BUF634 buffer amplifiers at the balanced ground headphone output channel.
PCM2704 as USB-to-S/PDIF receiver
CS8420 as S/PDIF receiver (in high-jitter-reduction mode)
PCM1794 D/A converter-chip.
LM6171 opamps biased into class-A for I-V conversion.
Sampling frequencies / resolution
8..96 kHz / 16, 20, 24 bit (S/PDIF)
32, 44.1, 48 kHz / 16 bit (USB)
Star-grounding.
Ultra short signal paths.
Signal paths and signal path components at the bottom side of the PCB for maximal shielding.
Sturdy aluminium enclosure
Weight: 3.9 kg.
Size: 27.6 x 27.8 x 8,7 cm.

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[ 本帖最后由 Pan 于 2008-7-13 16:20 编辑 ]

emmanuelle · 发表于 2008-7-13 10:20:05

原帖由 Pan 于 2008-7-13 10:17 发表
这是个人听过配合HD650最是美满的一套系统。分 digital USB-input 版和无DAC版，我试的一台是无DAC版搭配HD650，我听到的是：“无框的空间感，看得见的声音”。从这个组合里，那些对HD650的一切赞美，都得到证实 ...

我相信这耳放推QP450会更加好声。