Focusrite's pre-amps are amongst some of the most legendary in the world and the Focusrite ISA One Classic Pre-Amp With Digital A/D Card is here to further testify to this. Completely rugged and portable, the Focusrite ISA One Classic Pre-Amp's chassis plays home to technology that originates from the ISA110 module.
The Focusrite ISA One preamp is complemented by a line input and an independent DI channel, with a dedicated gain control, active or passive impedance switch, a TRS Jack output for sending to an amp and an independent XLR output on the rear panel. It also has a variable impedance circuit, allowing the user to switch through 4 carefully selected input impedance settings. As well as the original ISA110 impedance, 3 further impedance settings allow perfect matching, or creative mismatching of the preamp with any microphone to hand.
Classic design, modern power
The Focusrite ISA One Classic Pre-Amp also features an insert point, should you need to place extra processing between the preamp or DI and the optional converter. Phantom power, phase reverse and a 75Hz, 18dB/octave high-pass filter are also easily available from the 45 degree angled front panel.
A a moving coil VU meter offers independent input metering for both channels with variable calibration to suit analogue and digital recording sources. Alongside two six-LED peak meters, inputs can be metered either pre- or post-insert.
Manufacturer Focusrite Model ISA One Dimensions (HxWxD) 104 x 220 x 290mm Weight 8.6lbs (3.9Kg) Connectivity Intputs:
- 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
- Send: TRS Jack x 1
- Balanced line output: XLR x 1
- DI output: XLR x 1
- DI through: TS Jack x 1
- Cue mix left input: TRS Jack x 1
- Cue mix right input: TRS Jack x 1
- Headphones output: ¼” TRS Jack x 1
Dynamic Range 10dB to 40dB continuously variable Frequency Response
- @ 10dB gain with -10dB input = 10Hz-100kHz +/- 0.6dB
- @ 40dB gain with -40dB input = -2.5dB down at 10Hz and 0dB at 100kHz
Signal To Noise Ratio 0dBFS (+22dBu) = 118dB
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