Reassure me that an upgrade will be an upgrade, Harman Kardon to Denon

[applejax]

Got a new TV and things cascaded into 4K Blurays and going from 5.1 to 7.1, and I'm having to do band-aids to keep my HK AVR2600 in my system, so that's looking like another upgrade. The HK is from 2004 or so, it just can't keep up with the new capabilities. I'd be looking at something in the range of the Denon AVR-S960H to the AVR-X3700H. I'm nervous, though, because I do like the HK, and it is significantly better than the Onkyo it replaced, with a focus on music. The big advantage I can determine is that HK's room correction isn't said to be very good, so while I'm sure there would be an improvement there, is it enough? I like the HK but it's time to upgrade, help!

 

[Blumlein 88]

Here is the review of the x3700H. It ranks fairly high among the AVR's tested so far.

https://www.audiosciencereview.com/forum/index.php?threads/denon-avr-x3700h-avr-review.15031/

I don't really know if the basic performance of the Denon is an improvement over the HK, but it likely is better or on par. Where you gain is room correction, and of course compatibility with all the newer formats and related connections.

 

[Chrispy]

What speakers? I'd probably stick to Denon x3xx and above series to get XT32 and pre-outs. You could also still use your old avr for audio if your 4k player can output to both tv and avr simultaneously.