I have previously owned Naim (17 years) and now own Meridian(1 year). Naim Power Amplifiers 'used' to be slightly unstable and the Naim preamplifier used to bandwidth limit the input signal into the Power Amplifier to ensure the Power Amplifier remained stable. This is why Naim amplifiers were not recommended for use with other pre-amplifers, etc. I don't know if this is true with the current range of products.

With regard to Naim being 'better for music' I would suggest that the Naim equipment majors on handling transients and therefore the music sounds urgent and alive, it isn't necessarily better just a different presentation. Its a very in your face thing, like you're sitting on the bands monitors rather than the Meridian equipment which puts you in rows 1 or 2 and you can see (hear) the whole presentation.

As I've aged I've grown out of the Naim and moved onto Meridian!!!

Mr Perceptive