you will need a powered headphone amp with multiple outputs, you may even need more then one, my digital music teacher had a class of about 30 and we used something like 6 amps...
I've never seen one with 30 outs, though...
is a simple speaker setup not an option, it would be much easier, and probably cheaper.
Is there any type of bluetooth setup? I imagine 30 or so headsets could be like fishing line when it comes time to collect them.
Q: Can I use multiple headphones with one transmitter? A: Yes! Simply order the add on headset for your system, specified below: RS100 --- > HDR120 RS110 --- > HDR120 RS115 --- > HDR120 RS120 --- > HDR120 RS130 --- > HDR130 RS140 --- > HDR140 A sole transmitter is not available separately.
Outside interference from what? Interference = airborne noise?
Discipline would provide a simple and highly effective solution to that problem with no further expense incurred. Gone are the good old days when I'd get beaten senseless at school for not paying attention. Cheers, Slipstreem.