I would eventually buy used but cannot since in Italy I cannot find them and I haven't a credit card for buying things on Internet for international countries.

What I noticed with the NAD is that A. It Is too powerful (40W? MAH!) and B. It is very good on some genres like Acoustics (rock and other), House/Trance and similar.
I want then to ask a few questions:

1. I fear that I cannot exploit the system since I have have to tune down the volume to a very low volume with the PC and with the amplifier, so can I go with low sensitivity speakers?

2. Which speakers could I buy with a budget max of 450 $/€ (that is a lot for me! So lesser is better!) that would go well even with those genres (House, Dance, etc.)? Must be front ported speakers and at least 6 inch. woofers (and max 30.5 cm).

Thanks!