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Focusrite ISA One Classic Analogue Microphone Pre-amplifier

SKU: DDJ2259

£499.00 £599.00
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Key features:

  • ISA series transformer-based preamplifier
  • Headphone output with volume control
  • Dedicated insert point
  • Optional stereo 192kHz A-D converter (Not included)
  • Backlit VU meter with variable calibration
  • Brand new
  • 3 Year Warranty
  • Free delivery
Description
Features
Specifications
Delivery

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Classic Focusrite Microphone Pre Amp (Digital Card NOT Included)

PLEASE NOTE: The optional A/D Converter Card is NOT included.

Back in the mid-1980s, Sir George Martin commissioned console design legend Rupert Neve to build a series of new, ‘no compromise’ console modules for AIR studios. They were an enormous hit and formed the basis of the Focusrite Studio Console, widely regarded as the best-sounding analogue recording console of all time. Today, the descendants of those modules are used in leading studios around the world, and their sought-after Focusrite Heritage Sound lies behind thousands of hit records. Today’s ISA Range from Focusrite puts the classic sound of Focusrite into your own studio or live performance.

Featuring a rugged, portable all-metal enclosure, the ISA One combines the classic Focusrite microphone preamp with a flexible, independent DI channel and optional 192kHz precision A/D conversion.

At the heart of the ISA range is the microphone preamplifier with its Lundahl input transformer – essentially the same circuit, based on the original ISA110, that has been used for 30 years in successive Focusrite designs. The input transformer imparts a special character to the sound that can’t be truly emulated in any other way: inseparable from the microphone itself, the transformer input stage is ideal for use with classic microphones. But this mic pre has a twist the original didn’t have, which makes it far more versatile: four carefully-selected impedances allow you to match microphone to input in different ways. Bring out the character of a classic mic or emphasise a special feature, or go for a totally transparent, modern sound – it’s up to you.

Whether you’re an artist, engineer or producer, you’ll appreciate the versatility of the ISA One, with its front-panel DI input. The DI includes low/high impedance switching and an amplifier output, and its own feed to the optional A/D converter and separate rear-panel XLR output

  • ISA series transformer-based preamplifier
  • Flexible independent DI channel
  • Switchable impedance
  • Headphone output with volume control
  • Dedicated insert point
  • Optional stereo 192kHz A-D converter (not included)
  • Lundahl LL1538 Input Transformer
  • Backlit VU meter with variable calibration
Gain Range (Mic)
  • 0dB to 60dB in 10dB steps
  • 20 dB of variable gain
EIN (Mic)
  • -126dB measured at 60dB of gain with 150 Ohm terminating impedance and 22Hz/22kHz band-pass filter
Noise (Mic)
  • Noise at output with unity gain (0 dB) and 22 Hz-22 kHz band pass filter: -97 dBu
Signal-To-Noise Ratio (Mic)
  • 106 dB relative to max headroom (9dBu)
Frequency Response (Mic)
  • At minimum gain (0 dB): -0.5dB down at 10Hz and -3dB down at 125kHz
CMRR (Mic)
  • 98dB (Channel 1, 1kHz, maximum gain with 24 dBu input)
Crosstalk Channel To Channel (Mic)
  • With 10dB@1kHz input to chA, chB output =104dBrA. With 10dB@10kHz input to chA, chB output = 84dBrA
Gain Range (Line)
  • -20dB to 10dB in 10dB steps
  • 20 dB of variable gain
Input Impedance (Line)
  • 10 kΩ from 10 Hz to 200 kHz
Total Harmonic Distortion Noise (Line)
  • Measured with a 0 dBu input signal, and a 22 Hz-22 kHz band pass filter: 0.0001
Frequency Response (Line)
  • At unity gain (0 dB): -0.3dB down at 10Hz and -3dB down at 200kHz
Gain Range (Instrument)
  • 10dB to 40dB continuously variable
Input Impedance (Instrument)
  • High = greater than 1MΩ
  • Low = greater than 300kΩ
THD (Instrument)
  • At minimum gain (10)
High-pass filter
  • Roll-Off: 18 dB per octave (3 pole filter)
  • Frequency: Fixed 75Hz measured at the 3dB down point

UK Deliveries

We offer FREE DELIVERY on orders OVER £99 to UK Mainland customers. Please see the table below for service details and costs.

Service DPD FedEx UPS
UK Standard (Orders Over £99) 7-10 Working Days | Free of charge
Next Working Day Express Next Day | £5.99 Next Day | £6.99 Next Day | £9.99
Next Day Before 12:00pm Next Day | £19.99 Service Not Available Service Not Available
Next Day Before 10:30am Next Day | £22.99 Service Not Available Service Not Available
Saturday or Sunday Weekend | £15.99 Service Not Available Service Not Available
Saturday or Sunday Before 12:00pm Weekend | £19.99 Service Not Available Service Not Available
Saturday Before 10:30am Weekend | £24.99 Service Not Available Service Not Available
Northern Ireland, Scottish Highlands & Islands 2 Days | £15.99 Service Not Available Service Not Available
Channel Islands 2 Days | £19.99 Service Not Available Service Not Available

For more information on shipping surcharges and additional costs, view our full policy here.

European Deliveries

We ship to most European destinations using trusted courier partners DPD, UPS, and FedEx, with full tracking from dispatch to delivery.

At checkout, simply select your country and the available courier options and prices will be calculated automatically based on your order’s size, weight, and destination.

All prices are tax inclusive and you will NOT have to pay any Tax or Duty to the courier.

Service DPD FedEx UPS
Republic Of Ireland 2-3 Days | £19.99 Live Rates at Checkout Live Rates at Checkout
Austria, Denmark, Estonia, Hungary, Latvia, Lithuania, Poland, Slovakia, Slovenia & Spain 3-6 Days | £39.99 Live Rates at Checkout Live Rates at Checkout
Belgium, France, Germany, Italy, Netherlands & Luxembourg 2-4 Days | £29.99 Live Rates at Checkout Live Rates at Checkout
Bulgaria, Greece & Romania 5-8 Days | £54.99 Live Rates at Checkout Live Rates at Checkout
Croatia, Czech Republic, Finland, Portugal & Sweden 4-6 Days | £44.99 Live Rates at Checkout Live Rates at Checkout
Norway 6-8 Days | £69.99 Live Rates at Checkout Live Rates at Checkout
Switzerland 3-5 Days | £49.99 Live Rates at Checkout Live Rates at Checkout

For more information on shipping surcharges and additional costs, view our full policy here.

Rest of the World

We ship to most international destinations worldwide using trusted courier partners UPS and FedEx, providing reliable delivery with full tracking from dispatch to delivery.

At checkout, simply select your country and the available courier options and prices will be calculated automatically based on your order’s size, weight, and destination. (Coming Soon)

All prices are excluding VAT. Your country & local taxes will have to be paid to the courier before they deliver your goods. Please check with your governing body on what rates you can expect to pay.

Service DPD FedEx UPS
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For more information on shipping surcharges and additional costs, view our full policy here.

Returns

Our returns system is easy, you have the right to cancel an order up to 14 days, please check our full returns policy here.

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£499.00

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