TubeOpto 8, an excellent addition to the O1v
Great sound quality, ease of use, light-pipe connectivity, front controls and metering and the clients like the fact it has tubes for warmth.
In addition to opening up channels 17-24 on the input side, I now have 8 outs I can send to 4 stereo or 8 mono headphones or wedges.
The O1v is a great tool, the TubeOpto 8 expands the users options.
When I get the cash, I plan to add another, expanding my live rig to 32 channels. After extensive research, I cannot imagine a better quality sound, ease of use and more bang for your buck than the TubeOpto/O1v combination.