Ah - something I can answer being an electronics eng by trade!

The buffering I need is really just signal conditioning - no significant delay, but beefing up the signal and the voltages from/to the PC port. Buffering in itsmore "IT" sense is where data is collected and delayed for some period, so allow streaming of things like video. Not something we want here, as you suggest!

My existing BoB has no buffering at all - just wired straight through - and that is what I'm trying to avoid again.