Is Singlepower still in bussiness?

This is terrible news! I've met Mikhail many years ago and own one of his amps. He was extremely nice and his amps are my absolute favorite for headphones. Really a shame...perhpas there is a reasonable explanation that will come out in time.

You need to go to Head-fi.com and check out the "stickys" in the amp section. There is no reason for taking ALOT of peoples money and vanishing with it. Also, the amps he put out over the last couple years had serious (dangerous) problems.

It is a shame- he had a large following at hed-fi. Also Sadly I think he is out of it. My amp (an "Extreme") took almost a year to get. Fortunately it sounds great. Apparently it is not plagued with the construction problems, or inferior design issues, with the power supply.
He is a very smooth talker, who seems too nice to be a rip off artist. When I was having problems with delivery, I thought I was alone!

Yes, Singlepower ended in disaster, but my Extreme was the best sounding headphone amp I have ever owned. Unfortunately, Mikhail Rotenberg was started running a Ponzi scheme as his business went downhill. As with any Ponzi scheme, the biggest victims are the ones who got in last and they are the ones who are angriest.

But there are many Singlepower owners who have had their amps checked out by a qualified tech. Those amps can be purchased for cents on the dollar relative to what other tube headphone amp manufacturers are charging. And they sound extremely good.