Can I use Amber i1/i2/i4 under Linux?

Yes! Amber i1, Amber i2 and Amber i4 are fully class compliant and all main functions can be controlled via the switches on the hardware, so it is supported by the USB audio driver from the ALSA package which is part of most Linux distributions. Please note that the driver has not been developed by us, so we can only provide limited technical support for this.