American Musical Supply
American Musical Supply
1-800-458-4076
AMS Advantage
American Musical Supply

Focusrite ISA One Microphone Preamp

Easy Payments, Fastest Shipping, Best Customer Service and Free Extended Warranty on Focusrite ISA One Microphone Preamp. AmericanMusical.com makes it simple to buy gear!
  • FOC ISAONE LIST Product Image

See all items from Focusrite
Product Description

The Focusrite ISA One Microphone Preamp provides 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 that formed the cornerstone of each channel on Focusrite's legendary Forte console. The preamp 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.

Focusrite ISA One Features

  • The same vintage preamp topology as their Forte console
  • Flexible Independent DI Channel
  • Four carefully selected input impedances
  • Headphone Output with Volume Control
  • Encased in a rugged and portable chassis
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 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.

Product Specifications
Focusrite ISA ONE Specifications

Mic Input Response
  • Gain range = 0dB to 60dB in 10dB steps + 20 dB of variable gain
  • Input Impedance, variable as follows:- (Switched Impedance setting Equivalent Input Impedance at 1kHz)
    • Low = 600 Ohms
    • ISA110 = 1400 Ohms
    • Med = 2400 Ohms
    • High = 6800 Ohms
  • EIN (equivalent input noise) = -126dB measured at 60dB of gain with 150 Ohm terminating impedance and 22Hz/22kHz band-pass filter
  • Noise at main output with gain at unity (0dB) = -97dBu measured with a 22Hz/22kHz band-pass filter
  • Signal to noise ratio relative to max headroom (9dBu) = 106dB
  • THD at medium gain (30dB) = 0.0009% measured with a 1kHz -20dBu input signal and with a 22Hz/22kHz band-pass filter
  • Frequency response at minimum gain (0dB) = -0.5dB down at 10Hz and -3dB down at 125kHz
  • Frequency response at maximum gain (60dB) = -3dB down at 16Hz and -3dB down 118kHz
  • CMRR=98dB (Channel 1, 1kHz, maximum gain with +24 dBu input)
  • Crosstalk Channel to Channel: with 10dB@1kHz input to chA, chB output =104dBrA. With 10dB@10kHz input to chA, chB output = 84dBrA
Line Input Response
  • Gain range = -20dB to +10dB in 10dB steps + 20 dB of variable gain
  • Input Impedance = 10kO from 10Hz to 200kHz
  • Noise at main output with gain at unity (0dB) = -96dBu measured with a 22Hz/22kHz band-pass filter
  • Signal to noise ratio relative to max headroom (24dBu)=120dB
  • Signal to noise ratio relative to 0dBFS (+22dBu) = 118dB
  • THD at unity gain (0dB) = 0.001% measured with a 0dBu input signal and with a 22Hz/22kHz band-pass filter
  • Frequency Response at unity gain (0dB) = -0.3dB down at 10Hz and -3dB down at 200kHz
Instrument Input Response
  • Gain range = 10dB to 40dB continuously variable
  • Input Impedance:
    • High = greater than1MO
    • Low =greater than 300kO
  • Noise at minimum gain (+10dB) = -92dBu measured with a 22Hz/22kHz band-pass filter
  • Noise at maximum gain (+40dB) = -62dBu measured with a 22Hz/22kHz band-pass filter
  • THD at minimum gain (+10dB) = 0.001% measured with a 10dBu input signal and with a 22Hz/22kHz band-pass filter
  • Frequency Response at 10dB gain with -10dB input = 10Hz-100kHz +/- 0.6dB
  • Frequency Response at 40dB gain with -40dB input = -2.5dB down at 10Hz and 0dB at 100kHz
High Pass Filter
  • Roll off = 18dB per octave 3 pole filter
  • Fixed Frequency 75Hz measured at the 3dB down point
Front and Rear Connectivity

Analogue Channel Inputs:
  • Mic input: XLR x 1
  • Line input: XLR x 1 and TRS x1
  • Instrument input TRS Jack: XLR x 1
  • External ADC input: TRS Jack x 1
  • Return: TRS Jack x 1
Analogue Channel Outputs:
  • Send: TRS Jack x 1
  • Balanced line output: XLR x 1
  • DI output: XLR x 1
  • DI through: TS Jack x 1
Analogue Channel Additional I/O:
  • Cue mix left input: TRS Jack x 1
  • Cue mix right input: TRS Jack x 1
  • Headphones output: 1/4 inch TRS Jack x 1
Weight
  • 8.6 pounds (3.9 kg)
Dimensions (W x H x D-top to bottom)
  • 8.66 x 4.1 x 10-11.4 inches (220 x 104 x 254-290 mm)


Helpful Info about the Manufacturer
Phone:  Warranty:  1 Year
Mello from Sacramento, CA
Overall Rating
General
Subject
Nice sound
Discussions
Currently there are no discussions available for this item.
Manual
0% Interest - EZ Payments!

3 Payments of
$166.34
$449.95 - $499.00
Loading....