Yamaha RX-V485
It's got loads of fun features and includes Alexa integration, which could be even more fun for me.
Sound-wise it's quite decently specced -
5.1 channel surround sound
Rated Output Power (1kHz, 1ch driven) = 115 W (6 ohms, 0.9% THD)
Rated Output Power (20Hz-20kHz, 2ch driven) = 80 W (6 ohms, 0.09% THD)
It's got three Burr-Brown 384 kHz / 32-bit DAC chips inside, with (so the bumph says) independent power supplies.
Dolby® TrueHD and DTS-HD® blah-blah-blah yadda-yadda-yadda...
It also features Yamaha's proprietary CINEMA DSP 3D which, it says...
Needless to say, it also handles 4K and 3D.[CINEMA DSP 3D] ...provides a wide, high and dense sound field, while HD Audio format decoding lets you enjoy HD Audio sources. Moreover, the Virtual Presence Speaker function delivers three-dimensional sound without the actual use of presence speakers — giving you a rich sound field virtually equivalent to 7.1-channel surround, even with a 5.1-speaker configuration.
DTS:X comes as standard, and DTS:X is "an object-based audio codec, which aims to create a multi-dimensional sound that 'moves around you like it would in real life' and will work with "any speaker configuration within a hemispherical layout" In short, it's an attempt to replicate the sort of sound Dolby Atmos can provide, but without the need for every square-inch of your walls and ceiling covered in speakers. It's also made it possible for users to adjust the volume of just the voices on a soundtrack, making once hard-to-hear dialogue a lot easier to understand.
It's controllable using the remote, android or Apple app, and, it seems, Alexa.
There appears to be a firmware update that allows one to connect a FREE Spotify account, which might be handy for me.
Obviously, I'm quoting most of this stuff from the manufacturer's site, and from elsewhere for the explanation of DTS:X but the actual proof of the pudding will be in the first Blu-ray of that pudding that I play, so I'll let you know.
One thing I will say, not about this amp but in general, I could never go back to listening to the TV with just the TV's own speakers. I've got a decent LG 55" telly but the sound is awful by comparison to any AV setup I've had. Being without an amp has reminded me of that in no uncertain terms.