<font color='#000000'>C.T.,
Thanks for your response to the Battle fo the Sony article. I have the following answers to your questions:
1) "is it unfair to compare a $1,000 unit with an almost $2k unit."
C.T., Good question and good point.
It really wasn't my purpose to compare the $1,100 (retail) Sony STR-DA4ES to the $2,000 (retail) Sony TA-E900ES, based on their price, but more for the fact that they share the ES title. Besides, when you consider that the 4ES and 7ES are almost identical Receivers, with a more expensive remote and larger power supply on the 7ES, this jacks the price up to $1,800 retail (or so) for the 7ES. Also, you can still purchase a new 9000ES for about $1,100 at a few mail order places, such as www.oade.com. So for these reasons, price was not my comparative factor.
What I am trying to express in this article is that Sony seems to have taken away some of the quality found in the 5ES and in the 9000ES to do the 4ES / 7ES. It's not to say the 4ES isn't a great Receiver. ESPECIALLY if you can get it for $600. For $600, I would jump on it. But, I don't think its worth $1,000, as there are other Receivers in this price range worth considering first.
2) "is it worth to use my HK 5Ch amp and find a new receiver as pre (current is RX-V795) or just to get rid of it and buy a good receiver with decent powers( >100W/ch from Yamaha, Denon)?"
Actually, the HK 5800 is a really good Receiver, so I'd have a hard time getting rid of it. If you start talking about using this unit as an amplifier and buying another Receiver, I'd have to say, it's probably not a wise investment.
First of all, you really need to define what your after for wanting to upgrade your current HK Receiver. Do you want/need a rear center (6.1)? Do you want/need 6-channel inputs for new Audio formats? Are you looking for other features not found in your HK?
If so, then I'd save a bit more money, wait a few more weeks and look at other units in the $1,200 range. Perhaps GDS or Ray can suggest what models to look at, as I have really not reviewed the newer Yamaha's, HK's and Denon's Models yet.
Good luck, and if you have more questions, I encourage you to use the forums. Audioholics is pleased to answer questions in here.
Thanks</font>