By low voltage, I mean "can be powered off a 24V/1A AC wall wart" :) . Most of the well-known tube designs need fairly high voltages, and require doing your own mains wiring with a toroidal transformer. For people who want to avoid that, what options are there? I've been reading through...

Hi everyone,   the following design is meant to be used as a PSU for various CMoy-like projects. In its current form, it should take 8V AC from a wall wart and output +-8V DC. The reason for this approach is that I do not want to mess with mains wiring myself (otherwise I would have gone...

Hi :)   So.. I got an Aune X1 DAC/Headamp today - sounds great by the way - and because I am a curious guy, I opened the case to check the interior. Because I am an idiot, I missed a small plastic ring when putting it back together, which shorted the heatsink of a TDA2030A in the power...

Hi there, I own an Ultrasone HFI-650 for quite a long time now, and while it's a great headphone, my source is very substandard, so I want to buy a reasonable CD-player as soon as possible. I'd also like to have a headphone amp, but buying seems very expensive, I guess it might be cheaper to...

Hi there, It's time upgrading my PC source. I'm using onboard sound at the moment, and I think I could improve the sound quite a bit if I used a decent soundcard instead. What about the Terratec EWX24/96? I'll only need the Stereo Cinch Out, so no need to get a 6fire. I'll run my home...

Good evening, fellow head-fiers . (It's 01:05AM over here in Germany ) . I'll start with a big 'Thank you!'. You guys rock . You really helped me quite a lot whenever I had another noob question about whatever. So, at last, I got me some Ultrasone HFI-650 as a late birthday present for...

Hi there, simple question: I often read about 'easy to drive'/'hard to drive', while it seems that phones with low impedance are called 'easy to drive', those with high impedance are called 'hard to drive'. Does this mean that for example, if I set up the output volume at my portable...

Hi there... it's me again . Simple question this time: Which of these three closed cans are the best, which the second best and which the worst? I know that everybody has his own opinion about this, so tell me yours! Some points: -I listen to Metal, Rock, Classic and Electronic...

Hi, I've got some questions... while you're reading, keep in mind that I am only 16 at the moment, and so I don't have 2000$ to spend on headphones, even if I wanted to . Yesterday I got myself the Senn HD 500 off ebay. They're not here yet, but I bought them at a very reasonable price...