I still have a Krell Showcase. Still works great. I have it set up balanced w/a pair of Bryston amps and a Parasound amp for the center. I use the 7.1 audio outputs from my Cambridge Audio Blu-Ray into my Krell for surround. . SQ is as good as anything out today. I think w/out HDMI it's one reason that it's lasted so long.
An argument for older processors
I’ve had the upgrade bug—going from a receiver to separates. Since many of the new processors are not available—e.g., Anthem AVM 70—I decided to get an older 7.1 (well it can have front high and front wides too) McIntosh MX123 at a good price.
Fantastic unit (I’m biased as I love Mc and this unit is definitely a lot more than a rebranded Marantz) that has greatly improved SQ and functionality.
I’ve been wondering about how much, audio wise, I’m missing and have been paying a lot more attention to how movies are recorded. Turns out that most TV, HBO, Netflix, and Amazon are only 5.1. HBO does have new Atmos releases and Disney and Apple TV have more Atmos and 7.1. Even many new Blu Ray movies are only 5.1. There are a scattering of actual 7.1 out there. If I play an Atmos movie it decodes to 7.1, and, by using Dolby EX and other settings, I can get rear surround out of 5.1.
So at this point most of the content I watch—like 95%—could not take advantage of a new processor. Only sticking point it I can’t pass 4K, but I could feed 5.1 audio via Toslink if I get a 4K TV—still using an old plasma for now.
Given the current lack of Atmos content, for me at least, having an older high quality processor makes a lot of sense. Maybe the room correction is better in the newer units, but I don’t know what I’m missing. No doubt in the future I’ll upgrade, but I’m satisfied for now (today at least).