input transformers, the same transformer model Rupert Neve originally selected for the ISA design in 1985. They offer up to 79dB of gain, four selectable microphone impedances, a 75Hz high-pass filter, and balanced insert connections.
The ISA channels also provide two relayswitchable, all-analog tone circuits. Console mode uses variable soft clipping to introduce saturation and additional low-frequency weight, while 430 Air mode, derived from the ISA 430 MkII, uses an inductor-based high-frequency shelf to add presence and openness.
I like the fact that both happen in the analog domain before conversion. Rather than simply giving you another plug-in to reach for later, Focusrite lets you make an intentional tonal decision on the way into the DAW.
CHANNELS THREE THROUGH EIGHT Channels 3 through 8 use Focusrite’ s ultra-lownoise preamp architecture and provide up to 69dB of gain. They also include analog Air and variable Drive, allowing the engineer to move from a relatively clean capture toward additional presence and harmonic color.
I actually like this architecture. Rather than paying for eight channels that duplicate exactly the same signal path, the C8X gives you two premium transformer channels for the most important sources and six very capable channels for the rest of the session.
On a worship tracking date, I would naturally put the lead vocal and acoustic guitar through the ISA channels, then use the other six inputs for background vocals, percussion, stereo keyboards, guitar cabinets, or additional acoustic instruments. On drums, kick and snare could occupy the ISA channels while the remaining inputs cover toms and overheads.
CONVERSION, HEADROOM, AND EXPANSION The C8X uses the same 24-bit / 192kHz AD / DA converter technology found in Focusrite’ s RedNet range, with up to 125dB of dynamic range. Eight fixed-level balanced line inputs also make it easy to integrate external preamps, compressors, channel strips, or a patchbay.
That matters in a church studio that may grow over time. You might start with the onboard microphone preamps and later add a favorite tube preamp or compressor. The C8X does not force you to abandon the interface when the rest of the studio develops around it.
At 44.1 or 48kHz, the dual ADAT ports can provide up to 16 channels of digital expansion. At 88.2 or 96kHz, that drops to eight channels. At 176.4 or 192kHz, the digital I / O is disabled, so anyone planning a large ADAT-based system should consider the intended sample rate.
For most worship recording environments working at 48kHz, 16 channels of ADAT expansion is substantial. S / PDIF, MIDI, word clock, and loopback are also provided, and the C8X can operate standalone.
MONITORING AND CONTROL There are 12 balanced analog outputs, with
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