Focusrite ISA One Analogue
Pre Amp

MPN: MOIFONEA-UK
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Features
  • ISA Series Transformer-based Pre-amplifier
  • Flexible Independent D.I. Channel
  • Switchable Impedance
  • Optional Stereo 192kHz ADC
  • Headphone Output with Volume Control
  • Dedicated Insert Point

View all Focusrite ISA.

Details

The ‘ISA One’ microphone pre-amplifier delivers Focusrite's prestigious ISA transformer-based pre-amp in a rugged and portable chassis, at a groundbreaking price.

ISA One features the classic vintage microphone pre-amplifier topology from the original ISA110 module, including the Lundahl L1538 transformer and bespoke zobel network. (The original 110 pre amp formed the cornerstone of each channel of Focusrite's legendary Forte console.)

The pre-amp is complemented by a line input (XLR and TRS Jack) and an independent D.I. channel, complete with dedicated gain control, active or passive impedance switch, a TRS Jack output for routing to an amp and an independent XLR output on the rear. This flexible independent D.I. makes the ISA One ideal both for engineers wishing to blend a D.I.’d guitar signal with a mic’d guitar cabinet, and for demanding performers who require a single classic solution for both guitar and vocals.

A variable impedance circuit has been added, allowing the user to switch between four carefully selected input impedance settings. In addition to the original ISA110 impedance, three further impedance settings allow perfect matching, or creative mismatching of the pre amp with any microphone. ISA One also features an insert point, should the need arise to place extra processing between the pre amp or D.I. and the optional converter. Phantom power, phase reverse and a 75Hz, 18dB/octave high-pass filter are also available from the angled front fascia.

Independent input metering for both channels is provided in the form of a moving coil VU meter with variable calibration to suit analogue and digital recording media, alongside two six-LED peak meters; inputs can be metered either pre- or post-insert. The meter calibrations utilise all the same reference points as Digidesign's Pro Tools HD system, allowing effortless line-up.

ISA One’s headphone output features a dedicated volume control, which delivers an external stereo cue mix, (a simple click track, or a stereo mix feed from an interface or a live console,) fed to the headphones via two TRS jack inputs on the rear of the unit.

An optional state-of-the-art stereo A-D converter is also available (the same card as used with the ISA430 Mk II), embodying cutting-edge conversion technology seated within Focusrite’s custom analogue circuitry. This optional card can be retrofitted at any time and provides two channels of 24 bit/192kHz A-D conversion with a dynamic range of 119dB.

View product on the Focusrite website.

Pre-order (more info)
Usually delivered within 7 working days
  • FREE UK delivery with this product
  • 1 year warranty
  • 14-day money-back guarantee

Shipping to mainland UK destinations for all items over £99 is FREE. For all other items, shipping currently starts at £4.99 unless specified otherwise.

If you require shipment to destinations outside the UK, please contact us for a quote.

This product comes with a 1 year warranty as standard.

Please note that you will need to register your product with the manufacturer to qualify for any warranty beyond 12 months.

For all items ordered online or over the phone, we offer the statutory 14 day “cooling off period”. This means that if you are unhappy with the goods for whatever reason, you can return them for a full refund within this period.

Please note, however, that certain items are exempt from this – see our Terms and Conditions for more info.

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