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标题: apogee symphony I/O MKII PK prismsound ADA-8XR [打印本页]

作者: 工程师 时间: 2017-1-25 20:48
标题: apogee symphony I/O MKII PK prismsound ADA-8XR
大家新年好，在这里开个PK贴。
首先是apogee的symphony

Digital to Analog:

THD+N: -119dB @ 21dBu (0.00014%) unweighted
Dynamic Range: 126dB A weighted
Max output levels – ∞ to +24dBu
Frequency response at 44.1 kHz: dc to 20kHz (+/- 0.05dB)
Output impedance: 25 Ohm
Outputs are balanced through Apogee’s proprietary Perfect Symmetry Circuitry (PSC)

Headphone Output:

1 stereo 1/4″ headphone output on front panel
THD+N:
- -110dB @19dBu into 600 Ohm (=80mW)
- -101dB @14dBu into 32 Ohm (=470mW)
Dynamic Range: 121db A weighted
Output: Apogee’s proprietary Constant Current Drive™ provides smooth frequency response with any headphones

然后是prismsound的ada-8xr

8C-DA SPECIFICATIONS

Connections	Electronically balanced outputs, male XLRs
Differential output impedance	50 Ohm
Full-scale output range (software-controlled)	+5dBu..+24dBu in 1dBu steps, trims in 0.05dBu steps
Absolute gain accuracy	+/-0.05dB
Output balance	54dB
THD+N: (997Hz, -1dBFS)	-102dB (0.0007%) typical
Dynamic range: (997Hz, -60dBFS)	108dB
IMD (SMPTE/DIN, 60Hz@-3dBFS & 7kHz@-12dBFS)	<-94dB
Maximum aharmonic spurium (997Hz @ -1dBFS)	<-130dBFS
Frequency response: fs=192kHz	-0.05dB: 5.2Hz..37.2kHz; -3dB: 1.4Hz..74.4kHz
Frequency response: fs=96kHz	-0.05dB: 5.1Hz..38.9kHz; -3dB: 1.4Hz..47.4kHz
Frequency response: fs=48kHz	-0.05dB: 5.1Hz..22.6kHz; -3dB: 1.4Hz..23.9kHz
Frequency response: fs=44.1kHz	-0.05dB: 5Hz..20.8kHz; -3dB: 1.4Hz..22.0kHz
Passband ripple	<0.005dB
Inter-channel phase difference	<0.02 degrees
Channel separation	1kHz: >115dB; 20Hz..20kHz: >110dB
Group delay (AES3 to output)	49.5/fs

(PCM to) DSD to Analogue Performance
The following DSD to Analogue specifications are measured using an ADA-8 Path in PCM to DSD mode as the signal source (since no standard DSD test source is available). They are as the Analogue Line Output Module, except for the following:
Maximum input level	0dB SACD (Normal) / +3.1dB SACD (Hot)
Absolute gain accuracy	±0.1dB
THD+N (997Hz, -1dBFs)	<-100dB (0.001%)
Dynamic range (997Hz, -60dBFS)	>106dB
Frequency response	-0.05dB: 10Hz…35kHz -3dB: 3.9Hz…40kHz

作者: 工程师 时间: 2017-1-25 20:50
看到在THD+N和Dynamic Range上apogee都是完胜prismsound。更具实际盲听二者的声音也完全在一个档次上，甚至apogee还略好。

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