Focusrite ISA 428 MKII
4-Channel preamplifier

Technical Data
- Manufactured by Focusrite
- Released in 2010
- Average price : $2372
- For microphone - instrument Hi-Z and line signals (transformer-based)
- 4 Line outputs
- Variable input impedance
- Per channel: phantom power, insert, phase reverse and variable high-pass filter (16 - 420 Hz)
- 6-Segment LED display
- Optionally upgradeable with: 24 bit 192 kHz 8-channel AD converter card
- Dimensions: 19"/ 2U
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