815301005100

The ISA One from Focusrite is a single-channel, transformer-based microphone preamp, inspired by the original ISA 110. It includes the Lundahl L1538 transformer and a custom Zobel network, with switchable input impedance, line input on XLR and 1/4″ TRS jacks, a dedicated DI channel, and optional analog-to-digital conversion. Additional features include phantom power, phase reverse, insert point, and a high-pass filter.