Hi all,
Just wanted to pop in this thread as a new owner of a 5000x, not exactly the same amp but incredibly similar.
I poked around a little inside, and I don't think this is a straight class-AB design as stated here. It has dual voltage rails so is more likely a class-G circuit, which isn't a bad thing as it stays barely above room temperature under normal TV volumes.
Looking at the power supply board, there are 2 rectifiers and 4 caps per channel, 1 rectifier and 2 caps for the low voltage supply, and 1 rectifier and 2 caps for the high voltage supply. All good so far...The flag I would raise is that all 4 caps are 6800uF rated at 50V. Low voltage taps on the transformer is 21.5VAC, should be okay, but the high voltage taps are 43V which will rectify to a little over 60VDC, a bit higher than what the caps are rated for so short life span may be of some concern with this amp.
On the plus side from my own observations. Noise floor is near silent with my speakers (audible only with my ear next to them), I've no 60Hz hum issues that are shown in the testing here (I used balanced input) and there's nothing bad I can say about the sound either. The chassis and the amp in general is also very well constructed of heavy gauge steel with pem-nut inserts for all the screws and a quality powder coat.
Thanks for the review. I have had my 5000X for about 4 months now. I initially had a loud buzz on my speaker tweeters but was able to get rid of them by using the ground nut connecting wires with my receiver.
The question I have is about the standby power consumption of this amp. I used a kill-a-watt meter and measured it draws 23 watts of power all the time when in standby mode (LED ring dim). It draws about 30 watts when turned on but no load applied. Isn't that standby power consumption rather high in todays' standard? My amp never goes to hot when running full volume (barely warm) but also at the same time never goes to room temperature when on standby mode. It is slightly warm to touch. In contrast, my Emotive XPA-5 draws less than a watt at standby and stays dead cold.