As LAK suggested: a fan. It draws current steadily.
I’ve had Furutech outlets since 2011, and yes, they take that along to burn in.
However, mine doesn’t sound as horrible as some other posters seem to have. I just notice it as "stiff," like a new pair of shoes that are not yet broken in. Decays on overtones stop abruptly, same as it did with digital 25 years ago. No overtones and the body of say, a tuba, just isn’t there. The instrument sounds like it’s 18" high instead of 40". All these appear as the unit burns in.
By the way, I have had the GTX-D (R), and then the NCF, which is downstairs in another system. I only got the GTX-D gold to see how it sounds, compared to the Rhodium version. The gold unit only has around 60 hours on it.
What’s interesting is that it’s in the tv setup in the living room (amp, speakers, CD player), and the most noticeable thing is how blotchy the videos of tv shows are. I’m watching Bewitched, my favorite show in the ’60s. And Samantha’s complexion, normally clear as a bell, now looks as though she got a sunburn. Splotchy and blotchy. I had never thought to try evaluating with video, but now I can "see" the unit’s burn in results by watching the same episode for around 10 minutes every day and watching Elizabeth Montgomery’s skin change. The first time I watched it, I wondered "What happened to the tv?!?" but quickly realized it was the ac receptacle.
This will be fun, and I don’t mean that sarcastically. I can watch a tv show AND listen to music to see how the improvements align.
