Drop + THX AAA™ 789 Linear Amplifier

I am connecting it the same way, with the same DT 1990 Pro as my main headphones. All I did was connect it via RCA to 3.5mm into my 3.5mm headphone jack on the front of my PC tower, or the back into the line-out green jack. The RCA cables go into the inputs on the back of the AMP, with red and white ports. If you don't have a 3.5mm headphone jack, then what I also did was get an Apple Dongle, and connect it to my PC via USB-C.

Hi guys, I've recently bought a Drop + THX AAA 789 Linear Amplifier. I have heard about the auto power-off feature of the unit as something of a cool feature to have as it simply turns itself off after about 6 hours of non-use so that even if you forget to power it down manually, it will do it for you, thus prolonging lifespan and keeping it cool all the time. With that said, I have noticed something bizarre and, dare I say, dumb. It happens whenever I try to listen to music on platforms such as Spotify Watch a movie on the Amazon Prime App on Windows, or simply browse a video on YouTube or stream a TV series on the browser. Every time I pause the music/video or when I backtrack or fast forward, the 789 will simply have no audio until 3 seconds later. I found that to be extremely annoying if it is a built-in feature, if not, then am I wrong to consider it a defect? Anyone who has the Drop + THX AAA 789 has experienced this? I'm talking about playing music or video on a Windows PC specifically as that is what I am using the AMP for. It is connected to a FiiO DAC and into my PC Tower. I tried with other dongles like the Apple one, and it's the same behaviour. Any help or pointers? I am seriously considering returning this purchase, as I pause, rewind/fast forward constantly when listening to music or watching videos and this constant audio drop-off is very annoying.

Reporting a red light of death. Just happened. Went to listen to music, turned up the volume knob, and nothing. Red light is on all the time. Checked the power supply; it's working fine. Unplugged, plugged in. Nothing. Now that I've had this happen, I see that a lot of others have, as well. Anyone look into this. I saw the replacement of the Q4 transistor at the power inlet. Could do. I can work with surface mount devices. I've read reports of burned components. I removed the board to see whether anything was immediately, easily apparent, and did not see any issues. Anything?? It can't be everything that's wrong, and there aren't so terribly many components on the board.