Focusrite ISA 428 Microphone Preamp Overview
Neve Designed 4 Channel Mic PreThe ISA 428 Preamp is the perfect multi-channel front end for any professional DAW. Four classic, Rupert Neve-designed, transformer-based pre amps with switchable impedance and direct instrument inputs. An optional eight channel 192kHz ADC, preceded by the all new proprietory Soft Limiter circuit, provides the perfect path into your Pro Tools HD system.
The benefits of the pre amp's topology include superb common-mode rejection, an excellent overload margin and, with its shared gain structure (20dB from the hand-wound transformer and up to 40dB from the amplifier), an extremely low noise floor and super-wide bandwidth (10Hz to 200kHz).
This pre amp design is the cornerstone of Focusrite's signature 'warm-yet-transparent' sound and is a point of reference for any discerning audio professional.
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- Four classic Rupert Neve-designed transformer-based preamps.
- 8 channels of cutting-edge A/D conversion, running at up to 192kHz. Protected by proprietory optical Soft Limiter circuit.
- Switchable Impedance for unparalleled mic matching or extended mic creativity - includes the classic ISA 110 setting.
- Multiple Front Panel Instrument DI. No separate DI box required.
- Analogue insert points on every channel.
- Rupert Neve-designed High Pass Filters on every channel.
- New moving coil peak meters & full digital metering (dBfs).
