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Focusrite ISA 428
Pre Pack with Four Rupert Neve-designed Transformer-based Mic/Instrument Preamps


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ItemID: ISA428   Retail Price: $2,499.99
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Focusrite ISA 428

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RESEARCH THIS PRODUCT: ISA 428 DESCRIPTION
ISA 428 Details:
- ISA 428 Description
- ISA 428 Specs
ISA 428 Reviews:
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- (9) Customer Reviews
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The Multichannel Pre Pack!
The ISA 428 Pre Pack is the perfect multi-channel front end for any professional DAW. Four classic Rupert Neve-designed, transformer-based preamps with switchable impedance and direct instrument inputs. An optional eight-channel 192kHz A/D converter, preceded by the all new proprietary Soft Limiter circuit, provides the perfect path into your Pro Tools HD system. The benefits of the ISA 428 Pre Pack preamp's topology include superb common-mode rejection, an excellent overload margin and, with its shared gain structure (20dB from the hand-wound transformer and up to 40dB from the amplifier), an extremely low noise floor and super-wide bandwidth (10Hz to 200kHz). This pre amp design is the cornerstone of Focusrite's signature "warm-yet-transparent" sound and the ISA 428 Pre Pack is a point of reference for any discerning audio professional.

Focusrite ISA 428 Pre Pack At-a-Glance:
  • Variable input impedance
  • Soft Limiter
  • Superb A/D conversion with optional card
  • Best of past and present


Variable input impedance
The input stage of the ISA 428 Pre Pack provides enhanced control and creativity allowing you to switch between four carefully selected input impedance settings. The original ISA 110 setting is supplemented by three further impedance settings to either perfectly match the preamp with any microphone and maximize level, or use different settings creatively to shape the sound of the microphone being used. Should the need arise to place extra processing in between pre amp and conversion, insert points are also featured on every channel.

Soft Limiter
Protecting the ADC, the ISA 428's Soft Limiter opto circuit is a new design from Focusrite, entirely preventing any digital overs, while minimizing the undesirable distortion that standard limiter circuits often generate.

Superb A/D conversion with optional card
Finally, adding the new A/D converter to the ISA 428 Pre Pack gives you cutting-edge conversion technology, encompassed within pristine Focusrite circuitry, providing eight conversion channels of the highest quality, at frequency rates of up to 192kHz. Running at 96kHz allows for up to 16 (2 x 8, parallel) simultaneous digital outputs in addition to the four main analog outputs. Digital output options include dual AES/EBU, SPDIF and dual ADAT lightpipe. Full digital metering is provided for every channel, alongside new "moving coil" peak meters, designed to catch even the fastest of transients.

Best of past and present
Classic preamp technology, custom Focusrite input and limiting circuits and the very best in A/D conversion technology, the ISA 428 Pre Pack raises the bar for multi-channel recording solutions into Pro Tools HD, or any other professional DAW. Equally, it can be used as an additional set of high quality pre amps for any analogue or digital console or hard disk recorder.

Focusrite ISA 428 Pre Pack Features:
  • Four classic Rupert Neve-designed transformer-based preamps
  • 8 channels of cutting-edge A/D conversion, running at up to 192kHz
  • Protected by proprietary optical Soft Limiter circuit
  • Switchable Impedance for unparalleled mic matching or extended mic creativity - includes the classic ISA 110 setting
  • Multiple Front Panel Instrument DI. No separate DI box required
  • Analogue insert points on every channel
  • Rupert Neve-designed High Pass Filters on every channel
  • New moving coil peak meters & full digital metering (dBfs)

Focusrite ISA 428 Pre Pack - A great 4-channel front end for your digital rig!

Customer Reviews
 Versitile  
by Brian Bauer from Cerritos, CA USA, October 25, 2008
Music Background:  Audio Engineer (Recording & Live), Guitarist

“Great Preamp, with the selectable impedance this is the preamp you need when your looking for versatility. Especially with transformerless mics,it brings new life to great mics. Plus with the option of a digital card (Which I don't have but plan to purchase) you can add 4 other preamps and make it a 8 channel A-DAT interface. If your looking for professional preamps with room to grow this is it!”
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Sweetwater Expert Advice
 
  "I've owned an ISA428 for a few years now, and it continues to be my go-to stereo mic pre. The best thing about the ISA pre is its ability to work on so many things and retain a clear, detailed, and yet warm sound that you would find on high-end single channel mic pres at this price (yet of course the ISA428 is four channels). In addition, the impedence switching comes in handy to work w/ any mic/input option, including the Royers and other ribbon mics. I mainly use it for stereo acoustic guitar recording, but it truly is a workhorse in the studio and in my mind a must-have for any multi-channel recording facility."
Paul Allen
  "The colored lights and VU meters impress clients, and the great sound quality impresses you. Get the ISA 428 and impress everyone!"
Maynard Madsen
  "Every once in awhile, a product comes along that I just love to recommend and one such product is the ISA428. It's such a great value of price and performance that it's really hard to beat. I personally own a pair of the ISA428's and use them on everything including drums, percussion, piano, string quartets and vocals... you name it! With the ISA 428 you get a warm, analog sound that isn't over-bearing. At the same time, it is a fairly neutral pre-amp but not sterile. It's just a great pre."
Brad Lyons



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