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Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp - Secondhand

  • Image of actual item
    CCR1708
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  • Image of actual item
    CCR1708
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    Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp - Front
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    Focusrite ISA428 MK2 Four-Channel Preamp - Angled
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    Focusrite ISA428 MKII Preamp - Rear
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    Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp - Angled 2
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    Focusrite ISA428 Mk II 4 Channel Preamplifier - Detail
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  • CCR1708 Actual Item
  • CCR1708 Actual Item

New condition product media content:

  • Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp - Front
  • Focusrite ISA428 MK2 Four-Channel Preamp - Angled
  • Focusrite ISA428 MKII Preamp - Rear
  • Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp - Angled 2
  • Focusrite ISA428 Mk II 4 Channel Preamplifier - Detail
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Key Features

  • Good condition secondhand product. Fully functional, inspected by our experts
  • Images show the actual product available for sale
  • FREE iZotope Ozone 11 Elements - limited time only
  • Four classic-style transformer-based preamps
  • Switchable impedance for enhanced flexibility
  • Classic 'ISA 110' setting - providing Focusrite's original signature sound

Secondhand condition of this item: GOOD

This product is secondhand and has been inspected by our team of product experts to ensure it is in full working order, and meets our high quality standards.
A product in good condition is clearly used, with noticeable marks, scratches or signs of wear. While these cosmetic imperfections are more apparent, they do not affect the items functionality or sound quality.
Any accessories or software mentioned outside of this condition report may not be included with this item for sale.
Included with this Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp is its UK Power lead.

Product Ref: 322375

Full Description

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FREE - iZotope Ozone 11 Elements for a limited time only!

Available for free until 6th January 2025, Native Instruments have teamed up with Focusrite to give Focusrite hardware owners (whether you’re new to the family or a long-time user) a chance to claim this powerful mastering tool. This means if you’re already a registered hardware owner or are purchasing this product today, the free copy of Ozone 11 Elements will appear in your account – available to download until the end date of this promotion.

With Ozone 11 Elements, you can elevate your music to release-ready standards using updated features like the refined Assistant View for personalised processing, the enhanced Master Assistant for tone matching and balance, and seamless integration with Audiolens for reference track analysis. Native Apple Silicon support ensures optimal performance, making it the perfect tool for finalising your next project. Claim your free download today through your registered Focusrite account!

Classic-style transformer-based preamps

The Focusrite ISA428 Mk II 4 Channel Pre Pack Pre-Amp brings you four timeless classic mic preamps in a compact and user-friendly 2U enclosure. This powerful pre-amp offers four mic preamp channels, as well as instrument inputs and line-ins, all conveniently located at your fingertips.

The original Focusrite mic pre was designed to complement the microphones of its time, and this updated model offers even more versatility. With the addition of three extra input impedances to the classic ISA 110 setting, you can now match any microphone, whether it's a vintage classic or a modern design, allowing you to access a wide range of sounds.

Variable input impedance and flexible controls

Each mic pre on the ISA428 Mk II gives you the choice between mic, line, or the front-panel instrument input. With variable input impedance, you can ensure that you are getting the best performance from your source. With up to 60dB of gain available on the four-position rotary and gain range switches, as well as an additional +20dB of continuously variable trim, you have a staggering 80dB of gain at your disposal. This makes the ISA428 Mk II perfect for capturing everything from subtle nuances to powerful performances. The high-pass filter also offers variable cut-off frequency, ranging from 16 to 420Hz.

Four additional AD converter inputs for high-end conversion

To further enhance its audio processing capabilities, the ISA428 Mk II offers optional A-D conversion, giving you four additional A-D converter inputs. This allows for up to eight channels of high-quality conversion, with a dynamic range of 122dB and exceptional jitter performance below 250 picoseconds. This optional feature takes your audio recordings to a whole new level of clarity and precision.

Selectable impedance for enhanced clarity

The Focusrite ISA428 Mk II gives you the freedom to experiment and explore different sonic possibilities. With selectable impedance settings, including the legendary 'Vintage ISA110' setting, you can achieve the original signature sound that Focusrite is known for. This feature allows you to match different microphones or push the boundaries of your creativity with various impedance settings.

Features

  • Four classic transformer-based preamps
  • Switchable impedance for unparalleled mic matching or extended mic creativity
  • Includes the classic ISA 110 setting
  • Multiple direct instrument inputs on the front panel
  • Analog insert points on every channel
  • Highpass filters on every channel
  • Ultra-precise LED metering (dBfs)
  • 2U chassis design
  • Optional A/D card provides 8 channels of cutting-edge conversion at up to 192kHz

Specifications

Mic inputs

  • Frequency Response At Minimum Gain (0dB) (Mic): -0.35dB at 20Hz and –3dB at 122kHz
  • Frequency Response At Maximum Gain (60dB) (Mic): –2.5dB at 20Hz and –3dB 103kHz
  • Gain Range (Mic): 0dB to 60dB in 10dB steps, plus 0dB to 20dB continuously variable trim
  • Maximum Headroom (Mic): 7.4dBu
  • Noise EIN (Mic): -126dB (measured at 60dB of gain with 150O termination and 20Hz/22kHz bandpass filter)
  • Noise At Main Output With Unity Gain (Mic): -98dBu (measured with a 20Hz/22kHz bandpass filter)
  • SNR (Mic): 123dB (relative to max output 25dBu) 120dB (relative to 0dBFS ( 22dBu)
  • CMRR (Mic): 88dB
  • Input Impedance, Variable (Mic): 600O, 1400O, 2400O, 6800O

Line inputs

  • Frequency Response At Unity Gain (0dB) (Line): -0.3dB at 20Hz and –3dB at 94kHz
  • Gain Range (Line): -20dB to 10dB in 10dB steps, plus 0dB to 20dB continuously variable trim
  • Maximum Headroom (Line): 25.4dBu
  • THD N (Line): 0.002 (measured with 4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)
  • Noise At Main Output With Unity Gain (Line): -91dBu (measured with a 20Hz/22kHz bandpass filter)
  • SNR (Line): 116dB (relative to max output 25dBu) 113dB (relative to 0dBFS 22dBu)
  • Input Impedance: 10kO

Instrument inputs

  • Frequency Response At 10dB Gain (Instrument): -0.2dB at 20Hz and 0dB at 200kHz
  • Frequency Response At 40dB Gain (Instrument): -3dB at 20Hz and –3dB at 38.4kHz
  • Gain Range (Instrument): 10dB to 40dB continuously variable
  • Maximum Headroom (Instrument): 11.5dBu
  • Noise At Main Output With Minimum Gain ( 10dB) (Instrument): -95dBu (measured with a 20Hz/22kHz bandpass filter)
  • Input Impedance (Instrument): >1MO

High-pass filter

  • Roll Off: 18dB per octave 3 pole filter
  • Frequency Range: 16Hz to 420Hz (continuously variable, measured at the 3dB down point)

Front and rear connectivity

  • 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

Physical

  • Height: 3.5"
  • Depth: 11"
  • Width: 19"
  • Weight: 12.2 lbs
  • Product Code: MOIF428MK2UKEU

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