Can anyone suggest me something - I have Sonus Faber Concertino Home speakers, amplified by NAD C352. I've chosen this "uneven" ($1200 / $400) match because it was much more impressive comparing to all ~$800/~$800 speaker/amplifier synergies I've heard. Midrange, voices are perfect. High's are pleasant. Low end (acoustic bass in jazz) is well enough for me - possibly because raised by my small room. BUT, soon I noticed terrible things. Jazz-rock and rock are pain to listen: bass guitar sound is very weak, not tight. It never drives the rythm - and even if I intentionally try to follow the bass line it is rather hard. I can add bass on my amplifier - and it helps to add weight to bass but doesn't help to make it tight and controlled (what I usually expect from bass guitar). Also adding bass on amplifier makes low end (for example bug drum kicks) too heavy. Do you think it is a problem with amplifier/speaker match? Maybe SF's have some special impedance change in midbass freq's which makes them hard to drive for NAD? Once I tried concertinos with Marantz 7200 - and seemed that there was no bass at all, comparing to NAD! So it defenitely depends on amplifier, and not only on power (Marantz - 95W, NAD - 80W). And finaly the QUESTION. What can I do to aid that problem. Do I need another amplifier? Can you recommend something in price range up to $1200? Or better sell Concertinos as soon as possible? Thank you in advance.