Amber i4 – Release Notes 2.1
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new firmware, new user interface and new driver


New Firmware 2.1
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Output: 8 channels
Each headphone output (HP) can be fed separately with its own mix. This expands the Amber i4 into an 8-channel interface.

Input: 6 channels
  • Hardware inputs 1–4 as before:
      ◦ Inputs 1 and 2: Line / Hi-Z / Mic
      ◦ Inputs 3 and 4: Line
  • Inputs 5 and 6 are loopback channels. They optionally route back Line Out A, Line Out B, HP 1 or HP 2 for recording.


GUI Update v2.1
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The graphical user interface reflects the new firmware and has been extended with playback channels 5/6 and 7/8.

  • Individual mixes: For each output pair (Line Out A, Line Out B, HP 1, HP 2), a separate mix can be created from all playback channels and all analog inputs.
  • Linking output pairs: Output pairs can be linked by holding the Alt key (Windows) or ⌥ Option key (macOS).
  • Mini mixers: The sliders can be adjusted directly in the mini mixers.
  • Level meters: Every signal has its own level meter.
  • Snapshots: The number of snapshots has been increased to 16 (accessible via scroll bar).
  • Loopback: The loopback can take its signal from any of the four output pairs, either via the drop-down menu on the left or via the checkbox in each output pair.
  • Monitoring: Mono/stereo monitoring has been significantly improved.
  • Mono summing: Playback channel pairs can be summed to mono. The balance controls then become panning controls.


Driver Update v2.1
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  • ASIO stability significantly improved
  • ASIO latency optimized


MIDI fix on v2.1
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