| Product Specifications | Focusrite Pro ISA 828 MkII Microphone Preamp Specifications
MICROPHONE INPUTS
- Gain Range: 0dB to +30dB (30-60 switch disabled) and +30dB to +60dB (30-60 switch enabled) in 10dB steps, with an additional +20dB of continuous trim
- Input Impedance: Low = 600O, ISA 110 = 1400O, Med (Medium) = 2400O, High = 6800O
- Max. Input Level: +7dBu, min gain, medium Z
- Frequency Response (20Hz - 20kHz): 20Hz - 20kHz ±0.2dB, min gain, medium Z
- Frequency Response (10Hz - 110kHz): 10Hz - 110kHz ±1.5dB, min gain, medium Z
- THD + N: -92dB (0.0025%) @ -1dBr, min gain, medium Z
- EIN: -123dBu 'A'-Weighted (typical)
- Signal-to-Noise Ratio: 122dB 'A'-Weighted (typical), medium Z
- Common-Mode Rejection Ratio: 997Hz
CMRR: -93dB, min gain, medium Z
- Phantom Power: +48V, independently switchable per channel.
- High-Pass Filter: 75Hz knee frequency, 18dB/Octave, independently switchable per channel
- Phase: Inverts the phases of the selected input
LINE INPUTS
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Gain Range: -20dB to +10dB in 10dB steps, with an additional +20dB of continuous trim
- Input Impedance: Low = 600O, ISA 110 = 1400O, Med (Medium) = 2400O, High = 6800O
- Max. Input Level: +25dBu, min gain, medium Z
- Frequency Response (20Hz - 20kHz): 20Hz - 20kHz ±0.1dB, unity gain, medium Z
- Frequency Response (10Hz - 122kHz): 10Hz - 122kHz ±3dB, unity gain, medium Z
- THD + N: -91dB (0.0028%) @ -1dBr, min gain, medium Z
- Signal-to-Noise Ratio: 122dB 'A'-Weighted (typical), medium Z
- Common-Mode Rejection Ratio: 997Hz
- CMRR: -65dB, min gain, medium Z
INSTRUMENT INPUTS
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Gain Range: +10dB to +40dB with continuous gain using trim pot
- Input Impedance: Low = 470O, High = 2.4MO
- Max. Input Level: +18dBu, min gain, low Z
- Frequency Response (20Hz - 20kHz): 20Hz - 20kHz ±0.1dB, min gain, low Z
- Frequency Response (10Hz - 110kHz): 10Hz - 110kHz ±1.2dB, min gain, low Z
- THD + N: -83dB (0.0071%) @ -1dBr, min gain, low Z
- Signal-to-Noise Ratio: 100dB 'A'-Weighted (typical), min gain, low Z
CROSSTALK
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Microphone Crosstalk: Microphone Talkback: -60dB; 20Hz - 20kHz, min gain, medium Z
- Line Crosstalk: Microphone Talkback: -80dB; 20Hz - 20kHz, min gain, medium Z
- Instrument Crosstalk: Microphone Talkback: -80dB; 20Hz - 20kHz, min gain, medium Z
FRONT PANEL CONNECTIVITY
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Instrument Inputs: Channel Count: 2 Channels In
- Instrument Inputs: 4 x 1/4" jack inputs
REAR PANEL CONNECTIVITY
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Mic Inputs: Channel Count: 8 In
- Input: 8 x Female XLR
-
Line Level: Channel Count: 8 In and 8 Out
- Input: 8 x 1/4" jack inputs
- Output: 1 x DB-25 connectors (AES59)
- Inserts: Channel Count: 8 In
- Input: 1 x DB-25 connectors (AES59)
- Digital Card Slot:
- Compatible Card: ISA ADN8
- PSU:
- PSU: 1 x IEC Input
FRONT PANEL INDICATORS
- Control Functions: 16 x Pots (Gain and Trim). 60 Switches (On/Off Switch, 30-60 Gain, +48V, Phase, HPF, Insert, Z In, Input, Meters Pre A-D, Clock Select and Ext. Word Clock
REAR PANEL INDICATORS
- Control Functions: 1 x Pot (Meter Trim)
- Dimensions (H x W x D): 3.46 x 18.98 x 12.80”
- Weight: 15.55lbs
- PSU: 1 x Internal, 100-240V, 50/60Hz, consumption 140W
- Operating Temperature: Operates at up to an ambient temperature of 40 degrees Celsius
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