Focusrite ISA Two Classic Dual Mono Transformer Based Microphone Preamp

Variable impedance allows you to change how the preamp interacts with your microphone's output. By switching between the four settings, you can subtly alter the frequency response and character of your mic, letting you 'tune' the sound to better suit a specific vocal or instrument.

Yes, the unit features dedicated front-panel instrument inputs. These high-impedance DI inputs are designed to capture the full frequency range of passive pickups without the signal loss or dullness often associated with standard line inputs.

The ISA Two offers up to 80dB of gain, which is more than enough to drive low-output ribbon microphones or quiet dynamic mics. Its low noise floor ensures that even at high gain settings, your signal remains clean and free of unwanted hiss.

The unit is a standard 1U rack-mountable device. It measures 480mm wide and 280mm deep, so it will fit comfortably into any standard 19-inch studio equipment rack.

The Lundahl LL1538 is a high-quality input transformer that is central to the 'classic' Focusrite sound. It provides the warmth, harmonic richness, and transient response that define the ISA series, distinguishing it from transparent, transformerless preamps.

The high-pass filter is independently adjustable for each channel, allowing you to roll off unwanted low-end rumble or mud before the signal hits your converter. It is a useful tool for cleaning up vocal tracks or acoustic instruments during the initial recording stage.