Focusrite ISA-ONE Microphone Preamp

The ISA-ONE features a classic transformer-based circuit with a Lundahl LL1538 input transformer, providing a distinct, high-quality analog character that is often warmer and more detailed than the preamps built into standard interfaces.

Yes, the ISA-ONE features an independent DI channel, allowing you to record a microphone and an instrument simultaneously. Both signals can be processed and monitored separately.

No, the 192kHz A-D conversion card is an optional add-on. The base unit provides high-quality analog XLR outputs, but you will need to purchase the conversion card separately if you require a digital SPDIF output.

Switchable impedance allows you to change how the preamp interacts with your microphone. The classic ISA 110 setting provides a specific tonal response, while other settings can help you brighten or darken the sound of your mic to better suit your recording source.

Yes, the unit includes a dedicated headphone output with its own volume control, making it easy to monitor your signal directly from the preamp without needing to route audio back through your computer.

The insert point allows you to patch in external hardware, such as a compressor or EQ, directly into the signal path after the preamp stage but before the output, giving you more control over your signal chain.