I am waiting for an audition for this amplifier. I have read raved reviews of this particular power amp. I am a tube amp user and find the achilees heel of most ss amps to be in their midrange. So I was wondering whether I can match a tube preamp to this poweramp and get the benefits of tube and the bass of ss amps. Any recommendation on good preamps to match with this are also welcome, ideally I would like to limit my expenditure on the preamp to about 1500 pounds.