Focusrite ISA 428 MKII

Variable impedance allows you to change how the preamp interacts with your microphone's output. You can match the impedance to get a clean, transparent sound or lower it to introduce subtle tonal coloration and character, making it a powerful tool for sound shaping.

Yes, the unit provides a massive 80dB of gain, which is more than enough to drive low-output ribbon microphones cleanly. The variable impedance settings also allow you to optimize the preamp for the specific loading requirements of different ribbon models.

No, the digital connectivity is provided via an optional A-D converter card that can be installed into the unit. Without this card, the ISA 428 MkII functions as an analog-only preamp with balanced line-level outputs.

Each channel features a dedicated insert point on the rear panel, allowing you to patch in external hardware like compressors or equalizers directly into the signal path after the preamp stage. This is ideal for processing your signal before it hits your interface or digital converter.

Absolutely. The front panel includes dedicated instrument inputs, allowing you to plug guitars, basses, or synthesizers directly into the unit without needing an external DI box.

Each channel is equipped with a six-segment LED meter. These are designed for fast response times, ensuring you can accurately monitor transients and avoid digital clipping when recording.