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Focusrite ISA428MK2 4 Channel Transformer Based Microphone/Instrument Preamplifier

$1,749.99
Was $1,899.99 Save: $150.00 (8%)
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SKU: FCR16-AMS-ISA428MK2
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Description

Focusrite’s ISA mic preamps can be traced back to 1985, when console designer Rupert Neve was asked by Sir George Martin to create new modules for the console at AIR Montserrat. The modules he created included the legendary ISA110, on which all ISA microphone preamps are based. With their characteristic Lundahl LL1538 input transformer, along with one concession to modernity – variable input impedance – ISA mic preamps are very much the same as they were 30 years ago. But today, instead of solely gracing the consoles at AIR, ISA mic pres are at the heart of hundreds of hits made in leading studios and by leading engineers, artists and producers, across the world.

Specifications
  • Focusrite ISA428MK2 4 Channel Transformer Based Microphone/Instrument Preamplifier
  • SKU: FCR16-AMS-ISA428MK2
  • Mic Inputs
    • Frequency response at minimum gain (0dB): -0.35dB at 20Hz and –3dB at 122kHz
    • Frequency response at maximum gain (60dB): –2.5dB at 20Hz and –3dB 103kHz
    • Gain range: 0dB to +60dB in 10dB steps, plus 0dB to +20dB continuously variable trim
    • Maximum headroom: +7.4dBu
    • THD+N: 0.0009% (measured at 1kHz -20dBu input signal, at 30dB gain setting, with a 20Hz/22kHz bandpass filter)
    • Noise EIN: -126dB (measured at 60dB of gain with 150? termination and 20Hz/22kHz bandpass filter)
    • Noise at main output with unity gain: -98dBu (measured with a 20Hz/22kHz bandpass filter)
    • SNR: 123dB (relative to max output 25dBu)
    • SNR: 120dB (relative to 0dBFS (+22dBu)
    • CMRR: 88dB.
    • Input Impedance, variable: 600?, 1400?, 2400?, 6800?
  • Line Inputs
    • Frequency Response at unity gain (0dB): -0.3dB at 20Hz and –3dB at 94kHz
    • Gain range: -20dB to +10dB in 10dB steps, plus 0dB to +20dB continuously variable trim
    • Maximum headroom: +25.4dBu
    • THD+N: 0.002% (measured with +4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)
    • Noise at main output with unity gain: -91dBu (measured with a 20Hz/22kHz bandpass filter)
    • SNR: 116dB (relative to max output 25dBu)
    • SNR: 113dB (relative to 0dBFS +22dBu). Input Impedance: 10k?
  • Instrument Inputs
    • Frequency Response at +10dB gain: -0.2dB at 20Hz and 0dB at 200kHz
    • Frequency Response at +40dB gain: -3dB at 20Hz and –3dB at 38.4kHz
    • Gain range: +10dB to +40dB continuously variable
    • Maximum headroom: +11.5dBu
    • THD+N: 0.006% (measured with –20dBu input signal, at minimum gain (+10dB), with a 20Hz/22kHz bandpass filter)
    • Noise at main output with minimum gain (+10dB): -95dBu (measured with a 20Hz/22kHz bandpass filter)
    • Input Impedance = >1M?
  • High Pass Filter
    • Roll off = 18dB per octave 3 pole filter
    • Frequency range: 16Hz to 420Hz (continuously variable, measured at the 3dB down point)
  • Meters
    • 6 LED meter is calibrated 0dBFS = +22dBu (the maximum level which can be correctly converted by the optional internal A/D converter before overload occurs). The meter calibration points are as follows:
    • Meter panel calibration value in dBFS / Equivalent dBu value
    • 0dBFS / +22dBu
    • -2dBFS / +20dBu
    • -6dBFS / +16dBu
    • -12dBFS / +10dBu
    • -18dBFS / +4dBu
    • -42dBFS / -20dBu
  • Front and rear connectivity
    • Analogue Channel Inputs (Inputs 1-4)
      • 4 instrument 1?4” TS jack inputs on front panel
      • 4 microphone XLR inputs on rear panel
      • 4 line 1?4” TRS jacks on rear panel
      • 4 insert return 1?4” TRS jacks on rear panel
      • 4 ADC XLR inputs on rear panel
      • Analogue Audio Outputs (Outputs 1-4)
      • 4 line XLR outputs on rear panel
      • 4 insert send 1?4” TRS jacks on rear panel
      • Other I/O: IEC power input connector 100Vac – 240Vac
    • Front Panel Indicators
      • 8 output meters, 6 segment
      • 4 30-60 mic gain range selection indicator
      • 4 +48V phantom power indicator
      • 4 Phase indicator
      • 4 Insert In indicator
      • 4 Filter In indicator
      • 4 Input selection indicators (Mic, Line, Inst)
      • 4 Z In microphone input impedance selection indicators (Low, ISA110, Med, High) Clock select indicators (44.1, 48, 88.2, 96, 176.4, 192)
      • Ext clock indicators (Lock, Word clock, 256X)
  • Weight: 12.2lbs
  • Dimensions (W x H x D): 19" (W) x 3.5" (H) x 11" (D)
  • This item is New
  • 1-Year Manufacturer's Warranty
  • This product has no questions yet. Sign in to post a question

    Return Policy
    You may return this item in its original condition within 14-Days for a refund, minus a 20% restocking fee, and minus any shipping charges we paid to get the item to you.

    Description

    Focusrite’s ISA mic preamps can be traced back to 1985, when console designer Rupert Neve was asked by Sir George Martin to create new modules for the console at AIR Montserrat. The modules he created included the legendary ISA110, on which all ISA microphone preamps are based. With their characteristic Lundahl LL1538 input transformer, along with one concession to modernity – variable input impedance – ISA mic preamps are very much the same as they were 30 years ago. But today, instead of solely gracing the consoles at AIR, ISA mic pres are at the heart of hundreds of hits made in leading studios and by leading engineers, artists and producers, across the world.

    Specifications
    • Focusrite ISA428MK2 4 Channel Transformer Based Microphone/Instrument Preamplifier
    • SKU: FCR16-AMS-ISA428MK2
    • Mic Inputs
      • Frequency response at minimum gain (0dB): -0.35dB at 20Hz and –3dB at 122kHz
      • Frequency response at maximum gain (60dB): –2.5dB at 20Hz and –3dB 103kHz
      • Gain range: 0dB to +60dB in 10dB steps, plus 0dB to +20dB continuously variable trim
      • Maximum headroom: +7.4dBu
      • THD+N: 0.0009% (measured at 1kHz -20dBu input signal, at 30dB gain setting, with a 20Hz/22kHz bandpass filter)
      • Noise EIN: -126dB (measured at 60dB of gain with 150? termination and 20Hz/22kHz bandpass filter)
      • Noise at main output with unity gain: -98dBu (measured with a 20Hz/22kHz bandpass filter)
      • SNR: 123dB (relative to max output 25dBu)
      • SNR: 120dB (relative to 0dBFS (+22dBu)
      • CMRR: 88dB.
      • Input Impedance, variable: 600?, 1400?, 2400?, 6800?
    • Line Inputs
      • Frequency Response at unity gain (0dB): -0.3dB at 20Hz and –3dB at 94kHz
      • Gain range: -20dB to +10dB in 10dB steps, plus 0dB to +20dB continuously variable trim
      • Maximum headroom: +25.4dBu
      • THD+N: 0.002% (measured with +4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)
      • Noise at main output with unity gain: -91dBu (measured with a 20Hz/22kHz bandpass filter)
      • SNR: 116dB (relative to max output 25dBu)
      • SNR: 113dB (relative to 0dBFS +22dBu). Input Impedance: 10k?
    • Instrument Inputs
      • Frequency Response at +10dB gain: -0.2dB at 20Hz and 0dB at 200kHz
      • Frequency Response at +40dB gain: -3dB at 20Hz and –3dB at 38.4kHz
      • Gain range: +10dB to +40dB continuously variable
      • Maximum headroom: +11.5dBu
      • THD+N: 0.006% (measured with –20dBu input signal, at minimum gain (+10dB), with a 20Hz/22kHz bandpass filter)
      • Noise at main output with minimum gain (+10dB): -95dBu (measured with a 20Hz/22kHz bandpass filter)
      • Input Impedance = >1M?
    • High Pass Filter
      • Roll off = 18dB per octave 3 pole filter
      • Frequency range: 16Hz to 420Hz (continuously variable, measured at the 3dB down point)
    • Meters
      • 6 LED meter is calibrated 0dBFS = +22dBu (the maximum level which can be correctly converted by the optional internal A/D converter before overload occurs). The meter calibration points are as follows:
      • Meter panel calibration value in dBFS / Equivalent dBu value
      • 0dBFS / +22dBu
      • -2dBFS / +20dBu
      • -6dBFS / +16dBu
      • -12dBFS / +10dBu
      • -18dBFS / +4dBu
      • -42dBFS / -20dBu
    • Front and rear connectivity
      • Analogue Channel Inputs (Inputs 1-4)
        • 4 instrument 1?4” TS jack inputs on front panel
        • 4 microphone XLR inputs on rear panel
        • 4 line 1?4” TRS jacks on rear panel
        • 4 insert return 1?4” TRS jacks on rear panel
        • 4 ADC XLR inputs on rear panel
        • Analogue Audio Outputs (Outputs 1-4)
        • 4 line XLR outputs on rear panel
        • 4 insert send 1?4” TRS jacks on rear panel
        • Other I/O: IEC power input connector 100Vac – 240Vac
      • Front Panel Indicators
        • 8 output meters, 6 segment
        • 4 30-60 mic gain range selection indicator
        • 4 +48V phantom power indicator
        • 4 Phase indicator
        • 4 Insert In indicator
        • 4 Filter In indicator
        • 4 Input selection indicators (Mic, Line, Inst)
        • 4 Z In microphone input impedance selection indicators (Low, ISA110, Med, High) Clock select indicators (44.1, 48, 88.2, 96, 176.4, 192)
        • Ext clock indicators (Lock, Word clock, 256X)
  • Weight: 12.2lbs
  • Dimensions (W x H x D): 19" (W) x 3.5" (H) x 11" (D)
  • This item is New
  • 1-Year Manufacturer's Warranty
  • Frequently Asked Questions for this Product:

    How fast do you ship out?
    Most orders placed before 3:00 PM CST will ship within 24 hours. If you need a product by a specific time please contact us at 1-877-275-4434 before ordering.
    When will I receive my tracking number?
    Most tracking numbers are sent out around 5:30 PM CST of the following business day. Please allow 24-business-hours after ordering before requesting tracking information.
    How fast will I receive my product?
    Depending on your location it may take 3-4 business days for your order to arrive. Your tracking number will tell you the exact day your order will arrive. If you need an order by a specific date we recommend you call us at 1-877-275-4434

    Return Policy
    You may return this item in its original condition within 14-Days for a refund, minus a 20% restocking fee, and minus any shipping charges we paid to get the item to you.