Focusrite ISA One Single Channel Mic Preamp
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 Forté 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 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 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 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 MkII).
| SKU | FOC-ISAONEANALOG |
| Vendor | Focusrite |
| Bus Power | No |
| Included From Manufacturer | Power Cable |
| Mic Preamps | 1 |
| MPN | ISAONEANALOG |
| ADAT Expandable | No |
| Number of Channels | 1 |
| Equalization (EQ) | High Pass Filter |
| Audio Inputs | XLR Mic Input, XLR and 1/4" Line Input |
| Audio Outputs | XLR Line Output, 1/4" Headphones |
| Phantom Power | 48V |
| Product Weight | 8.6 lbs |
| Rackmountable | No |
| Width | 8.66" |
| Depth | 11.4" |
| Height | 4.1" |
Focusrite Limited Warranty
All Focusrite products are built to the highest standards and should provide reliable performance for many years, subject to reasonable care, use, transportation and storage.
Many of the products returned under warranty are found not to exhibit any fault at all. To avoid unnecessary inconvenience to you in terms of retuning the product please contact Focusrite support.
In the event of a Manufacturing Defect becoming evident during the warranty period, Focusrite will ensure that the product is repaired or replaced free of charge. The warranty period for any product purchased on or after January 24th, 2020 is a period of 36 months from the date of the original purchase.
A Manufacturing Defect is defined as a defect in the performance of the product as described and published by Focusrite. A Manufacturing Defect does not include damage caused by post-purchase transportation, storage or careless handling, nor damage caused by misuse.
While this warranty is provided by Focusrite, the warranty obligations are fulfilled by the distributor responsible for the country in which you purchased the product.
The distributor will advise you of the appropriate procedure for resolving the warranty issue. In every case it will be necessary to provide a copy of the original invoice or store receipt to the distributor. In the event that you are unable to provide proof of purchase directly then you should contact the reseller from whom you purchased the product and attempt to obtain proof of purchase from them.
Please note that if you purchase a Focusrite product outside your country of residence or business you will not be entitled to ask your local Focusrite distributor to honor this limited warranty, although you may request an out-of-warranty chargeable repair.
This limited warranty is offered solely to products purchased from an Authorized Focusrite Reseller (defined as a reseller which has purchased the product directly from Focusrite Audio Engineering Limited in the UK, or one of its Authorized Distributors outside the UK). This warranty is in addition to your statutory rights in the country of purchase.
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