Focusrite ISA One Single Channel Microphone Preamplifier, 10kOhms Line Input Impedance

With the Focusrite ISA One Single Channel Microphone Preamplifier, you can experience the renowned quality of Focusrite's ISA transformer-based preamp in a sturdy, portable design. This professional-grade preamplifier boasts the classic vintage microphone preamplifier topology from the original ISA110 module, a key component of Focusrite's legendary Forte console.

The ISA One is equipped with a line input and an independent D.I. channel, providing you with dedicated gain control, an active or passive impedance switch, a TRS Jack output for amp routing, and an independent XLR output on the rear. This versatile D.I. channel makes the ISA One an excellent choice for engineers looking to blend a D.I.'d guitar signal with a mic'd guitar cabinet, as well as for performers who need a single, high-quality solution for both guitar and vocals.

A unique feature of the ISA One is its variable impedance circuit, which allows you to switch between four carefully selected input impedance settings. This includes the original ISA110 impedance and three additional settings, enabling perfect matching or creative mismatching of the preamp with any microphone.

The ISA One also includes an insert point for extra processing between the preamp or D.I. and the optional converter. Other features include phantom power, phase reverse, and a 75Hz, 18dB/octave high-pass filter, all accessible from the angled front fascia.

For precise input metering, the ISA One offers a moving coil VU meter with variable calibration to suit analogue and digital recording media, alongside two six-LED peak meters. The meter calibrations align with all the same reference points as Avid's Pro Tools HD system, ensuring seamless integration.

The headphone output of the ISA One comes with a dedicated volume control, delivering an external stereo cue mix fed to the headphones via two TRS jack inputs on the rear of the unit.

Whether you're an engineer or a demanding performer, the Focusrite ISA One Single Channel Microphone Preamplifier offers a classic, reliable, and versatile solution for your audio needs.