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Our stock is strategically distributed across multiple warehouses to ensure swift processing and delivery. For urgent click and collect where products are showing in stock, please call us at 01442 292929 or email sales@proav.co.uk to check for availability.
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Sharing the simple mic preamp design of the original Focusrite ISA 110 module from the Focusrite Studio Console, ISA 828 MK2 incorporates eight of Focusrite's classic mic preamps, with Lundahl LL1538 transformers on every input. Each channel has the option of mic or line inputs, while inputs 1-4 also feature instrument inputs on the front panel. Each mic pre has variable input impedance, to provide a range of subtly different sonic options when using microphones, including an 'ISA 110' setting, which replicates the impedance of the original Focusrite mic pre
Up to 60dB of gain is available, with a further +20dB of continuously variable trim, providing a huge 80dB gain range. The high-pass filter with fixed 75Hz frequency and 18dB/octave roll-off. ISA 828 MK2 features high-pass filters, calibratable per-channel, six-segment LED meters, and switchable rear-panel insert points, which allow the use of inline processors such as compressors or EQs.
Dedicated connectors for mic and line-level inputs allow all sources to be connected simultaneously, making ISA 828 MK2 perfect for permanent installation in a rack. New to the ISA 828 MK2 is an updated power supply that allows for more efficient power consumption, a reduction in heat generation, and extremely reliable operation. The optional ISA ADN8 analogue-to-digital expansion card provides eight Dante, ADAT and AES3 outputs at rates of up to 24-bit/192kHz.
Mic 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 = 600Ω, ISA 110 = 1400Ω, Med (Medium) = 2400Ω, High = 6800Ω |
Max. Input Level |
+7dBu, min gain, medium Z |
Frequency Response (20Hz - 20kHz) |
20Hz - 20kHz ±0.2dB, min gain, medium Z |
THD + N |
-91dB (0.0028%) @ -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 |
Frequency Response (10Hz - 110kHz) |
10Hz - 110kHz ±1.5dB, min gain, medium Z |
Line inputs |
|
Gain Range |
20dB to +10dB in 10dB steps, with an additional +20dB of continuous trim |
Input Impedance |
Low = 600Ω, ISA 110 = 1400Ω, Med (Medium) = 2400Ω, High = 6800Ω |
Max. Input Level |
+25dBu, min gain, low Z |
Frequency Response (20Hz - 20kHz) |
20Hz - 20kHz ±0.1dB, min gain, low Z |
THD + N |
-91dB (0.0028%) @ -1dBr, min gain, low Z |
Signal-To-Noise Ratio |
122dB 'A'-Weighted (typical), min gain, low Z |
Frequency Response (10Hz - 122kHz) |
10Hz - 122kHz ±3dB, min gain, low Z |