Hi, I currently own a Parasound 2125v1, which has 125W driven by torodial transformers, currently driving my Klipsch RP-280FA mains with a Denon x7200wa as the preamp. I do 60/40 music / HT - although lately about 80 /20 music, so I can go in spurts of lots of music if I score a bunch of new albums. I mostly listen to vinyl, currently with a SL-1200, but have a Yamaha GT-2000 on the way. I considered initially a Parasound 2250v2 (250W) as an "upgrade", but the 2125 and 2250 share the same DNA, with the 2250 delivering more power... but as far as sound profile I have gathered they would be very similar. Then, I kicked around the A23 vs A21 - and although both in the Halo line, it is apparent they share SOME of the same DNA, but the A21 seems to be a step up, for instance, the A23 delivers around 2W Class A power, where the A21 is pushing 11W class A power. I spend a good deal of time at low to medium volume, so the A21 would have an advantage there. Also kicked around the idea of adding a P5 or P7 (P7 is better), but not something I need to do up front, and was told the 7200WA is plenty enough pre to drive A21. Having balanced ins / outs between the A21 and P5/7 is nice though, but could always upgrade that later. Bottom line - I am of the impression that a 2125 ---> A23 would not be that big of an upgrade - some, but not enough to justify a new amp. But, the biggest factor - with Klipsch RP-280FA as my current main, and although they are a good speaker with high 90's sensitivity, and 150W continuous rated - are they "not enough" speaker in anyone's opinion to justify the A21. Forget about the $$$, I am more asking about how much SQ I would be leaving on the table with the proposed Denon 7200, A21, Klipsch RP-280FA combo. Thanks in advance... I realize there is a subjective aspect here, but there is also the technical / power delivery and consumption angle here also.