ISA 428 MK II is a four-channel transformer-based ISA microphone preamp for studio recording. Each channel provides switchable impedance, instrument and line inputs, high-pass filtering and insert access, with optional eight-channel digital conversion.

The gain stages, impedance options, filtering and connections define how this exact preamplifier handles microphones, instruments or line-level sources in a recording setup.

Highlights

• Four-channel transformer-based ISA microphone preamp for studio recording
• High-pass filtering and insert access
• Instrument and line inputs
• Optional eight-channel digital conversion
• Instruments or line sources