升级我的ada8000,用在sac上面的。所以最多也就48k够用了。关键是质量和话放品质。PreSonus DigiMax D8
Input/Output
2 unbalanced ¼” instrument inputs (front panel; bypass Ch. 1 and 2 mic inputs)
8 balanced rear-panel XMAX mic preamps
1 BNC word-clock input
8 balanced ¼” direct outputs (1 per channel)
1 ADAT Lightpipe optical digital output (8 channels)
Meters, Controls, and Features
Individual channel-trim controls with -4 dB to +50 dB gain range
48V phantom power for condenser microphones (switchable in pairs)
-20 dB pad on every channel
4-segment, fast-acting LED input meter
Clock source (sets clock to external or internal with 44.1 or 48 kHz sample rate)
Digitalia
Professional-quality AD converters (+107 dBu dynamic range)
ADAT Lightpipe digital output: 8 channels at 24-bit resolution and 44.1 and 48 kHz internal sampling rate
Word-clock master via ADAT Lightpipe or slave to external word clock
Power
Internal power supply with standard IEC connector
Physical
1U rack-mountable, rugged steel chassis
Focusrite OctoPre Mk II
Mic Input
Frequency Response: 20Hz - 20kHz +/- 0.1 dB.
THD+N: 0.001% (measured at 1kHz with a 20Hz/22kHz bandpass filter).
Noise: EIN > 125dB (128dB analogue to digital): measured at ~60dB of gain with 150 Ohm termination (20Hz/22kHz bandpass filter).
Mic Gain: +10dB to + 55 dB
Input Pad: ~-10 dB
Phantom power switched in 2 x 4 channel groups (1-4 and 5-8)
Maximum input level: +8 dBu (+17 dBu with pad on input)
Line Input
Frequency Response: 20Hz - 20kHz +/- 0.1dB.
THD+N: < 0.001% (measured with 0dBFS input and 22Hz/22kHz bandpass filter).
Noise: -90dBu (22Hz/22kHz bandpass filter).
Line 1-8 Gain: -10 dB to +36 dB
Line maximum input level: +22 dBu
Instrument Input
Frequency Response: 20Hz - 20kHz +/- 0.1dB.
THD+N: 0.004% (measured with 0dBu input and 20Hz/22kHz bandpass filter).
Noise: -87dBu (20Hz/22kHz bandpass filter).
Instrument Gain: +10 dB to +55 dB
Maximum input level: +8 dBu
Analogue Output
Frequency Response: 20Hz – 20kHz +/- 0.2dB.
THD+N < 0.0010% (-100dB) (measured with 0dBFS input 22Hz/22kHz bandpass filter, un-weighted).
Nominal output level @ 0dBFS: 16 dBu, balanced
Digital
A/D Dynamic Range 110dB 'A-weighted' (all inputs).
JetPLL™ Technology providing superb jitter reduction for class leading converter performance.
Clock Jitter < 250 pico seconds.
Sample Rate Clock Accuracy: +/- 20PPM.
Sample rates: 44.1kHz to 96kHz.
Clock Sources: Internal and Word Clock.
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