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Designed to provide an additional eight mic pres, eight line outputs, and 24-bit / 192 kHz AD/DA conversion, the Focusrite Clarett+ OctoPre connects with your existing interface via ADAT connections. Building upon the success of the original OctoPre, the Clarett+ OctoPre features improved high-dynamic-range A/D and D/A conversion with ultralow distortion that provides clearer mixes and stunning details at all levels. The mic pres are outfitted with Focusrite's proprietary Air feature, which allows you to switch impedances to emulate an analog ISA preamp. You can also instantiate a transformer-resonance effect to lend your signal clarity and a sense of air. These mic pres switch automatically between mic level and line level.

The front-panel inputs feature an extended amount of headroom to suit the high-output signal of sources such as electric guitars, while the rear panel offers XLR-1/4" combination jacks for the remaining six inputs. With a dynamic range of 118 dB, each input leads into a 24-bit analog-to-digital conversion stage capable of sample rates up to 192 kHz. Every input also sports its own insertion point—with hardwired relay bypass—for outboard compressors, EQs, or any processor you have.

The ISA428 MkII from Focusrite is a four-channel microphone preamp featuring Focusrite's transformer-based preamps. With selectable input impedance, direct instrument inputs and an optional eight channels of high-quality analog to digital conversion, the unit is a perfect front end for the audio professional, whether utilizing digital or analog recording.

The ISA microphone preamp holds a reputation for delivering transparency along with subtle warmth derived from transformer core saturation. The addition of a variable impedance circuit allows users to perfectly match the preamp with any microphone, or to use different settings creatively to shape the sound of the microphone.

The extremely broad frequency response of Focusrite preamps (close to 200 kHz at the top end) guarantees accurate phase response across the range of human hearing, with the roll-off point being moved entirely outside of the audible hearing range. Warmth, plus beautifully open, unrestricted high frequencies, is a classic hallmark of the mid 80's Focusrite designs to which this preamp owes its design.

The optional eight-channel analog converter utilizes high-quality Burr-Brown amplifiers and PCM4220 A-D converter chips seated within Focusrite's custom analog circuitry. Specifications include a dynamic range of 122dB and jitter performance below 250 picoseconds. The card can be retrofitted at any time and due to the convenient 25-pin D-type connector, it integrates seamlessly with most digital workstations, including Pro Tools.

A premium bonus is the Brainworx bx_console Focusrite SC channel-strip plug-in, a stellar digital emulation of the legendary and rare Focusrite Studio Console. Only 10 of the consoles were ever produced, but you can access its famed sound directly in your DAW.

The ISA One from Focusrite is a single-channel, transformer-based microphone preamp, based on the original ISA 110 preamp that formed the cornerstone of each channel of the legendary Forte console. It features classic vintage topology and includes the Lundahl L1538 transformer and a custom Zobel network.

In addition to switchable input impedance settings for the microphone preamp, the unit includes a line input on XLR and 1/4" TRS phone jacks. An independent DI channel features a dedicated gain control, active or passive impedance switch, a 1/4" TRS output for routing to an amplifier, and an independent XLR output on the rear.

The ISA One features an insert point should the need arise to place extra signal processing between the preamp or DI, and the optional analog-to-digital converter. Phantom power, phase reverse and a 75 Hz, 18 dB/octave high-pass filter are also available from the angled front fascia.