Are these any good..?

[TheGreek]

I'm thinking about getting to play through in the wee hours...are these any good?

http://www.ebay.co.uk/itm/Behringer-MA400-Monitor-Headphone-Amplifier-/282279023340?epid=1294371475&hash=item41b92412ec:g:tycAAOSwB09YQ1Wr

[CameronJ]

Only problem I can see is that I assume the Monitor Input will be expecting line level, so you'll probably have to boost your bass signal beforehand? If you have a preamp/DI then just use the XLR out from that into the mic input and it should do the business I reckon