musictech, είδες το manual της 1820 m και αναφέρει κάτι παραπάνω? γιατί στα αναλυτικά spec που παραθέτω παρακάτω, ούτε κάνει τον κόπο η creative να αναφέρει οτιδήποτε για τα 4 stereo 1/8'' Speaker Outputs (να τα χρησιμοποιεί ως 4 balance άραγε? και για ποιον λόγο? πλεονασμός και τσάμπα κόστος, αν γίνεται κιόλας...), οπότε επιμένω στην προηγούμενη μου απάντηση και στο προφανές της consumer χρησιμότητάς τους....
" 1820m Specifications
General Sample Rates: 44.1, 48, 96, 192kHz from internal crystal or externally supplied clock (no sample rate conversion)
Bit Depth: 16 or 24 bits
PCI Bus-Mastering DMA subsystem reduces CPU usage
Zero-latency direct hardware monitoring w/effects
Analog Line Inputs ( 6-1/4" ) Type: Servo-balanced, DC-coupled, low-noise input circuitry
Level (software selectable):
-Professional: +4dBu nominal, 20dBu maximum (balanced)
-Consumer: -10dBV nominal, 6dBV maximum (unbalanced)
Frequency Response: +/- .05dB, 20Hz - 20kHz
THD+N (1kHz at -1dBFS): -110dB (.0003%)
SNR (A-weighted): 120dB
Dynamic Range (1kHz, A-weighted): 120dB
Stereo Crosstalk (1kHz at -1dBFS): < -115dB
Common-Mode Rejection (60Hz): > 40dB
Analog Line Outputs ( 8-1/4" ) Type: Balanced, low-noise, 3-pole low-pass differential filter
Level (software selectable):
-Professional: +4dBu nominal, 20dBu maximum (balanced)
-Consumer: -10dBV nominal, 6dBV maximum (unbalanced)
Frequency Response: 0.0/-.35dB, 20Hz - 20kHz
THD+N (1kHz at -1dBFS): -105dB (.0006%)
SNR (A-weighted): 120dB
Dynamic Range (1kHz, A-weighted): 120dB
Stereo Crosstalk (1kHz at -1dBFS): < -115dB
Combo Microphone Preamplifier/Line Inputs (2) Type: TFPro™ combination microphone preamp and line input
Frequency Response: +0.8/-0.1dB, 20Hz - 20kHz
Stereo Crosstalk (1kHz min gain, -1dBFS): < -120dB
Line Input:
-Gain Range: -12 to +28dB
-Max Level: +17dBV (19.2dBu)
-THD+N (1kHz at -1dBFS, min gain): -94dB (.002%)
-Dynamic Range (A-weighted, 1kHz min gain): 100dB
-SNR (A-weighted, min gain): 100dB
-Input Impedance: 10K ohm
-Common-mode Rejection Ratio (60Hz): > 40dB
Microphone Preamplifier:
-Gain Range: +10 to +50dB
-Max Level: -12dBV (-9.8dBu)
-THD+N (1kHz at -1dBFS, min gain): -95dB (.0018%)
-SNR (A-weighted, min gain): 100dB
-Input Impedance: 330 ohms
-Common-mode Rejection Ratio (60Hz): > 80dB
Headphones (stereo) Type: Linear power amplifier
Frequency Response: +0.0/-0.35dB, 20Hz - 20kHz
THD+N (1kHz, max gain):
-33 ohm load: -70dB (0.032%)
-600 ohm load: -85dB (0.006%)
SNR (A-weighted): 112dB
Dynamic Range (A-weighted): 117dB
Stereo Crosstalk (1kHz at -1dBFS, 600 ohm load):< -100dB
Maximum Output Power: 500mW
Output Impedance: 22 ohms
Gain Range: 85dB
Phono Input (stereo) Type: RIAA equalized phono input
Frequency Response: +/-0.5dB, 50Hz - 20kHz
THD+N (1kHz, 10mV RMS unbal input): -76dB (.015%)
SNR (10mV RMS unbal input, A-weighted): 90dB
Stereo Crosstalk (1kHz at -1dBFS): < -80dB
Maximum Level:
-Professional: 80mV RMS
-Consumer: 20mV RMS
Input Capacitance: 220 pF
Input Impedance: 47K ohm
Digital I/O S/PDIF:
-2 in/2 out coaxial (transformer coupled)
-2 in/3 out optical (software switched with ADAT)
-AES/EBU or S/PDIF format, switchable under software control
ADAT:
-8 channels, 24-bit @ 44.1/48kHz
-4 channels, 24-bit @ 96kHz (S-MUX compatible)
-2 channels, 24-bit @ 192kHz
Firewire:
-400 Mbps 1394a port (6-pin)
-Compatible with DV cameras, storage peripherals, etc.
MIDI: 2 in, 2 out
Synchronization
Internal Crystal Sync at 44.1, 48, 96, 192kHz
External Sample Rate Sync:
-ADAT
-S/PDIF (opt. or coax)
-Word clock (75 ohm termination, switchable) "