I have replaced the x4000 which has been GREAT for years. The only downside to the x4000 was that after a few years we had heat issues. I bought this great cooler here on Amazon. It has the same depth and width dimensions as the AVR and has 3 fans that draw in heat from below and then expel it. I put this thing on top of the x4000 and ran it for another two years. Apparently my x3700 starts with an additional external cooler on top. I missed 4k. I've switched from all 1080p to 8K TVs in my media room (replacing a 65-inch Panasonic plasma with a 75-inch Samsung Q800T). This Denon is one of the SEVERAL 2020 AVRs that can handle 8k video. Everything about it is the same or even better than my old x4000. I will be adding 4 Atmos ceiling speakers soon. I am pleased. I highly recommend the Denon AVR Receiver. Just see which line suits your needs and don't worry; you can leave.
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