I have 2 years for my Yamaha NS-10M, I'm happy but no more. It lacks a bit of momentum I think. As against the report is very neutral, very quiet and virtually no heat. However, it generates easily blast that is getting stronger (unless I ca or connectors) but it will spoil a few eardrums before realizing it.

I recommend the low-budget souahite gain amplifier (very) silent spineless neutral and transparent sound without needing a lot of sound power. The value for money is in anyway interesting.

EDIT from 03/05/2006:

I have more worries of false contacts from the amp, ca me soule, I will be having PEIT change! :-(