Integrated or Receiver?

I was only suggesting you buy used due to the fact that you were considering the possibility of a 'short term' unit until you had the money for something better later. Also at the time no one knew about your desire to run 2 pairs of speakers at the same time. I do understand one's desire to purchase new, and would never try to talk one wishing to do so into purchasing used. If you are willing to consider increasing your budget to that of the Outlaw receiver there are many good choices out there (including the Outlaw). I would keep an eye on online retailers such as Music Direct, Audio Advisor, Crutchfield, and others. They often offer discounts on many fine products.

Be specific when researching your choices regarding the use of 2 speakers pairs. Ask the sales people you deal with about this. I would caution you regarding running 2 pairs of speakers simultaneously at very high volumes. There is a big difference on the demand made on an amplifier between biwiring, biamping, and running 2 pairs of speakers simultaneously.

Truly wishing you the best in your search. 

mesch.  Thanks for the added info.  I don't necessarily have to run two pairs of speakers simultaneously.  I just tried it for a lark with the Dayton amp and it sounded great.  Using the Omnipolar OM 10's with the more detailed sounds of the Conway 3's provided a great soundstage with lots of detailed music.  But I've found that Bi Wiring is every bit as good and has greatly improve the audio quality of my equipment.

I was thinking of buying a cheaper new unit for short term simply because the odds that it would fail would be lower than something comparable that is decades old.  A new $250 Yamaha for example is likely to last a lot longer than one of the older units I've bought.  Would buy me the time to get the money I need for something like the Outlaw.

I suspect the Yamaha A 500 will be a longer lived amp than the Denon PMA520.  Yamaha has always treated me well and I've never had a bad piece of equipment from them.  

2nd the Yamaha 501 or even the 500.  spend your money on the amplifier.

jag.  Only one thing worries me about the new Yamaha amps and receivers.  I've read a large number of reviews from people that claim the they sound too bright.  Not just a couple but a lot.  I can't listen to bright speakers or amps for any length of time without listener fatigue.  

Older Yamaha amps usually were neutral and not bright.  My 35 year old Yamaha A 500 is just that.  Still sounds great.  I've read the AX596 from a few years ago is also not bright.  Somehow with the last series or two of amps, Yamaha has changed the sound.

I was just reading a few reviews on the new Onkyo A 9150 and that might be a better choice than any new Yamaha amp.  Not bright at all.  Will read more about Marantz to see if that might work too.

After decades with receivers (Sansui/Sony ES/Pioneer Elite) I realized one day that I no longer (as in never) listen to the radio anymore.  Decided then, rather than upgrade to an integrated amp (receiver with no radio tuner), I'd just switch to pre-amp/processer and power amps.  I went with Emotiva for the incredible value and bought a 7.1 processor, a 300W/chan stereo amp and a 125w/chan 5-chan amp.  

Though I still use a Pioneer SC-05 receiver in my office system, I'll never buy another one.