Hi all, I'm in the process of upgrading my system, which currently consists of a Marantz PM4000 amp and Sony CDP XB740E CD player driving my latest acquisition, a pair of Monitor Audio Bronze B2's. The Monitor Audio's gave a pair of B&W 602's a comprehensive spanking when I auditioned them, and I love the sound they produce. However, I reckon there's more sound to come from them, by feeding them a better quality signal than the Marantz can provide. I have in mind to spend around £400-600, and thinking possibly Cyrus 6vs or Roksan Kandy, which brings me to my question concerning tone controls. I like lots of bass (as long as its taught and well controlled - something that impressed me greatly with the MA's), and I have the bass controlled turned up quite a bit on the amp. The Marantz is equipped with a tone defeat switch - if I activate this, I find the dreadful lack of bass quite upsetting. Am I likely to find amps without tone controls to have a sound equally as thin as the Marantz with its tone defeat on? I would be most annoyed to spend a fairly hefty slug of cash on an amp only to discover that it produces inadequate bass for my bass hungry ears. Hopefully, I will audition before I buy, but I have seen an opportunity to scoop up a Roksan Kandy for a bargain, and I am not unknown to make a rash purchase without proper research! Would appreciate the thoughts of other forum members concerning bass and tone controls.