Specifications
Microphone Preamplifier: (measured to balanced DB25 analog outputs)
- Mic gain: 0 to 70dB (extra gain stage for more!)
- Switchable pad: -15dB (all channels front panel switchable)
- Line gain: -10 to 60dB (-25 to 45dB inc. PAD)
- Phantom power: 48V ±4V @ 10mA / channel
- Mic EIN: < -127.0dBu
- CMRR: >80 dB @ 100Hz to 2kHz
- Maximum input level: +20dBu (+35dBu with PAD)
- Input impedance (Mic): >2k ohm balanced (approx. 2.2k ohm)
- Input impedance (Line): >8k ohm balanced (approx. 8.6k ohm)
- frequency response: ±0.5dB 10Hz to 100kHz @ min. gain
- Crosstalk: < -90dBu 10Hz to 10kHz
- THD+N @ 0dBu (1kHz): <0.003% (-90.5dBu) mostly 3rd harmonic
- SNR: >90 dB @ min. gain; >90 dB @ min. gain
- XLR Combi female: Pin 2 (Hot), Pin 3 (Cold) & Pin 1 (Shield)
- ¼” TRS : Tip (Hot), Ring (Cold) & Sleeve (Shield)
Discrete JFET DI: (measured via microphone preamplifier circuitry)
- I gain: 0dB unity gain (0 to 70dB)
- Maximum input level: +17dBu
- Input impedance (DI): 1Meg ohm unbalanced
- Frequency response: ±0.5dB 10Hz to 50kHz
- THD+N @ 0dBu (1kHz): <0.01% (-80dBu) mostly 2nd & 3rd
- SNR: >85dB @ min. gain
- ¼” TS jack: Tip (Hot) & Sleeve (Shield)
Balanced Analog Line Outputs: (ground sensing compensation scheme)
- 8-channel DB25:25-Pin Tascam Format
- Maximum output level: +22dBu
- Output impedance: <200 ohm ground sensing <100 ohm unbalanced
A-D Converter: (measured under AES-17 sans microphone preamplifiers)
- Chipset: Burr-Brown PCM4204 24-bit PCM
- Digital reference level: Selectable via Rear Panel
- 0dBFS = +18dBu (iD22 Professional)
- 0dBFS = +12dBu (iD14 Prosumer)
- Frequency response: ±0.1dB 20Hz to Fs/2 (Nyquist)
- Crosstalk: <-110dBFS @ 1kHz & <-90dBFS @ 10kHz
- THD+N @ -1dBFS (1kHz): 0.0015% (-96.5dB)
- THD+N @ -6dBFS (1kHz): 0.0009% (-101dB)
- Dynamic range: 113.5dB un-weighted; 116.0 dB A-weighted
- Peak LED lineup: -2dBFS (moves with reference level)
- Signal LED lineup: -38dBFS (moves with reference level)
Digital Output:
- ADAT 8-channel SMUX: 44.1 to 96kHz
- Clock: Internal Crystal or External Source
- Word clock input: 75 ohm BNC – switchable 75 ohm termination
Power Supply:
- Low-noise shielded linear PSU fanless, quiet operation: custom transformers 35W Maximum Consumption
- Internal DC power rails: ±15V, +48, +30V & +9V
- Switchable mains voltage: 100, 120, 220 or 230Va.c
- Fuse: 200mA (UK) or 315mA (US)l Time-delay (T) slow-blow type
Weight:
- 9 lb. / 4.5kg
Dimensions (approx.)
- 19″ x 11-5/16″ x 1-11/16″ / 482mm x 286.5mm x 44mm (W,D,H)