Actually, I can't believe I missed this...   Is your filament grounded at any point? It looks like you're grounding the negative side of your filament.

Nah man, sorry. I'm really out of my element with stuff this low frequency.   I would say that you need some inductive chokes on the B+ supply to the tubes, but I have no idea how that does anything with the audio frequencies.   Another shot in the dark, how clean is the DC coming into the...

Yeah, any speaker (or headphone) output should have 0V DC. Your design looks like it's possible for there to be DC on the output, which is why I asked.

Hrm.     Is the output transformer grounded on both sides? I'm not sure I'd do that.   How much DC do you have on the output?

Fair enough. Most of my experience is with tube RF amplifiers. I've yet to build a headphone amp.

  Without doing a major chassis rebuild, my suggestion is to run a ground wire from each component that needs a ground to a central ground. Quick and easy way to do this is the following: To further explain what's going on, I found some pictograms. Just ignore all of the amateur radio stuff...

Yeah, you need an earth. That will probably fix it, but you shouldn't stop there -- take the initiative to build a really killer amp. You've taken the first few steps and gotten yourself a working (but unsafe) amplifier. Now just make it safer by adding fusing, earth grounding, a good...

Fiber washer, nylon washer, card stock treated with resin, or a custom 3d printed washer.   Or buy another, if you don't mind paying shipping again... Which personally I hate.

OK, first thing you need to do is stop touching things while the amp is plugged in. You're going to wake up across the room or wind up killing yourself. HV isn't something to play around with. It's not worth dying.   My background first so you understand where I come from. I've been an amateur...

I've owned all the impedance levels that Beyerdynamic offers with the dt770, even the 32 ohm version.   Never have I had that issue -- then again I only buy direct from them.

Have you tried using an amp?   My DT770s don't sound nearly as good without an amp as they do with one. Even something as cheap as a Little Dot Micro+ helps. (Which I just discovered isn't made anymore.)

I've been away for a while. Life does that to you.   I recently moved to a cubicle at work, from a lab with pretty good audio isolation, so I have to live with headphones now. I have a set of DT770 headphones from the HifiManufaktur service they offered in the EU.   I've got a Chinese 6N3J...

My first pair of Super.Fi Pro 5's broke. I emailed UE, and I was dealt with in a quick professional manner. I was sent a new version 2 pair (I had the v1 previously) and I would do it again. I don't think it's the earphone that is designed to be low-quality, I think it's the plastics used...

Call up UE and see what they say. It might be covered under the warranty. I know mine were.

I fully reccomend the M-Audio Studiophile AV 30 or 40. Both are great bang-for-the-buck speakers, and they're compact enough to use on a small desk. For the sound card: try your built-in card at first, because it won't cost you anything. A lot of built-in cards now offer S/PDIF, which the...

I smell a fed.

Quote: Originally Posted by kramer5150 That's the same thing I've used for almost a year now with my UE Super.fi's. I was tired of the cord pulling on my player when I turned my head, and it makes it easy to pull both IEMs out and not fear dropping them.

I got my 2nd gen iPod in the mail yesterday. I was suprised as to how well it's held up, but I have a suspicion that the headphone jack on it was damaged before it could be used (abused?) a lot. To make a long story short; I cracked it open after an initial listen, and started trying to...

Quote: Originally Posted by Cobaltz Sir has $800 so he gets a pair of BX8a Moniters (great speakers by the way) and the upgraded cables. Next year are you figuring he buy the Amp and cables? With a computer and $800 you can get a very good sounding system that will do what he wants...

'tibor' Seems like a way to get a google count up. Not sure why you wouldn't want it to link to something too. Never had the fortune of hearing a pair of porta-pros, but then again, I haven't really tried either.

UPDATE: I called up Apple, and after they took me through the normal rig-ama-roll, then told me to send it in. I setup a dispatch for my sister's address (because I'm overseas, they wouldn't ship to me directly) and I mailed it to my sister. She got it, and requested the dispatch to be sent...

I'd whole-heartedly reccomend these: http://www.m-audio.com/products/en_u...BX8a-main.html For the price, you can buy some decent cables to match, then you've got a nice experience. I had a pair a few months ago, but had to sell them for lack of desk-space.

Did everyone else get a black sleeve with their 5.5gen iPod? I bought a white 5th generation back in Feb06, and it had a white/mocha coloured sleeve. My girlfriend also bought a black 30GB around the same timeframe, and it had a white sleeve. The new 80GB iPod I just bought has a black sleeve...

My 5Gen iPod just died the other day. I know that's what a lot of people just say (believe me, I worked on an internet help desk...) Thinking it was the battery, I let it charge for a few hours (5) and then tried to reset it, but it still would not turn on. I then opened it up and tested the...

Quote: Originally Posted by Owen Bartley awptickes, I really like the flex you used on your "ugly" cables, what is it? And by the way they aren't that bad, and as long as they work, hey, no big deal, right? It's the black techflex from qables.com. My internet connection here in...