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Focusrite ISA One Analog Single Channel Preamp

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SKU: # 326142
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ISA ONE A

Your Price: $699.00 CDN

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The ISA One microphone preamplifier delivers Focusrite's prestigious ISA transformer-based preamp in a rugged and portable chassis, at a groundbreaking price.

ISA One features the classic vintage microphone preamplifier topology from the original ISA110 module, which formed the cornerstone of each channel of Focusrite's legendary Fort console.

The preamp is complemented by a line input 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 micd 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 preamp with any microphone. ISA One also features an insert point, should the need arise to place extra processing between the preamp 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 Avid's Pro Tools HD system, allowing effortless line-up.



ISA Ones 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 MkII).

NOTE: The ISA One Digital comes with the A-D converter as standard.

Isa One2 of 2 customers found this review helpful

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Closest StoreNanaimo, British Columbia
Amazing Preamp, Di! For the money youre getting an amazing pre , and a Di! 4 selecteble impedences, cue mix, a button to switch between mic/line/instrument, an analog and digital meter, meter calibration, optional space for a digital card! And it looks great, and its built solid! Now performance! On Vox it is definately a fairly clean pre, not adding alot in the way of bottom end, but thats one thing I like about it, Youre getting a nice signal from the cinemag transformer , it sits great in the mix, takes well to stacking tracks and eq, and when you push it you can get a very nice transformer saturation! Some people talk bad about this preamp because on its own it doesnt sound big and bassy, but this thing truly is a beast! I also love running my guitar and bass through a Di and then the mic pre! Ive used just the Di of the isa one aswell and its great! Its a good pre for singer/songwriters too as you can have your mic go to the mic pre, and run your acoustic or electric straight to the di and then run those into seperate channels of your interface! I could go on and on, but if you are considering this, you cant go wrong! Rock On! quick tip- try this pre with an AT 4040(amazing for male rap vox, female vox, and acoustic/electric guitar! just use a pop filter)
Posted by James Cassidy on Jul 1, 2017
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Focusrite ISA 13 of 3 customers found this review helpful

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Closest StoreCambridge, Ontario
Great pre amp with TONS of headroom and ultra low noise floor! Great value for the money!
Posted by anonymous on Oct 29, 2012
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