I'd appreciate some advice on how to best improve my set up. Bought everything used over the last year or so. Speakers are all PMC - GB1, DB1i and DB1 Centre. Amp is a Denon AVR-3808. Sub is an Arcam Logo and also have a Marantz UD7006. The PC provides FLAC audio. The set up sounds spot on for movies but I'm sure the PMC speakers can deliver more than the Denon can provide in 2 channel. What would be the best amp improvement? I could purchase a (used and older) higher end AV receiver such as the Yamaha RX-A3030 or go for a stereo power amp like the Meridian 557. Or perhaps go for an Anthem or Arcam AV amp. I know the PMC speakers have a lot more to offer. What would you advise? Thanks.