Hey guys, I'm back again! I just picked up a Dell Mini 9 and am thus far loving the little machine. However, in my quest to tear apart and hack everything I own, I took it apart yesterday, in a quest to find the audio output circuitry. Looking around the headphone jack, all I saw were surface...

Hey guys, long time no see! I took a bit of a Head-Fi break this year after picking up autocrossing and heading out to Mojave, CA for a rocket internship. Anyway, I hope to be back more often and actually post up like I used to, but for now, got a quick question. I'm going to be down in San...

I realize that the Mini3 is a highly tuned and refined design, but I still can't stop wondering how it would behave with different opamps. This thought sprung up since I am now on a quest to create the lowest noise and distortion amplifier to power my UE-11's. The chip that sprung to mind...

So I happened upon a couple of these opamps recently (datasheet here), mainly out of curiosity, and now I'm wondering what to do with them. They seem to be outrageously powerful, if a bit slow. They seem more usable for speaker driving applications (Gainclone style), but can anyone here come up...

I was checking my hard drives earlier tonight and apparently, my C: drive is down to 2.9 GB (out of 108) left. Astonished at this, I tried to find out where I had gone wrong. I apparently only have about 56 GB of data, but upon further inspection, 43 GB was tied up in a folder called...

It all started on one rather fine day in August, when I logged onto Head-Fi, and navigated my way to the UE-11 giveaway page. To say I was surprised when I saw my name selected would be an understatement. I was truly ecstatic. I immediately began correspondence with Kelly Duke and Brad Jensen at...

I was wondering, are there any designs out there for unity gain tube buffers? Basically something like the Szekeres amp (or maybe even more complex), but using tubes? I saw a simple design on TubeCAD under the heading "No Gain-No Pain" (scroll down a little bit), but would that be suitable for...

Well, I think it's about time to get my source end up to par. The HagUSB is great, but I've been wondering what other options I have. I've narrowed it down to two choices. First is the Monica USB. This appeals to me because of the simplicity of the setup. There are no excess signal conversions...

Just a random late night musing while looking at stuff for my circuits class, is there any way to bias a PINT into Class A? It is possible with the PIMETA and the PPA and many other amps out there, so why can't we attach a resistor connecting the output of the opamps and V-? And if it is...

I am in the process of peer-reviewing Asr's GLite LE. When I hooked it up to my HagUSB and turned up the volume, I heard some static and some strange beeping noises. I later found out that the beeping happens whenever I move my mouse (which is USB). Is this noise caused by dirty power that the...

Hey Atlanta area folks, I want to have a mini meet at my apartment sometime around June 7th (maybe the weekend afterwards). Reason being Asr is lending me his GLite LE to test out for a few days. As I don't think anyone around here has a Gilmore amp, this may be a great time to try one out. If a...

After exactly 2 weeks, my HA-2 MKII SE arrived from Dr. Meier. Mine has a custom gain of 7 to make it better suited to driving my K340's. First off, I have to say that Dr. Meier is such a pleasure to deal with. He answered all of my questions very promptly and made the whole purchase a breeze...

Since the Steinchen DB's are not finalized yet by the look of things, I have looked into other options for output devices. Many people have suggested placing BUF 634's or the equivalent within the feedback loop of the opamp. Apparently this is to control DC offset. I was considering using 2...

I was just browsing around and came upon this DAC by 47 Labs. Figuring that the same sense of simplicity that gave birth to the Gaincard was in this DAC, I went around trying to find some schematics for it. This is a stunningly simple DAC (no more complicated than the Gainclones) that I'm...

So several descriptions of amps I've heard of have stated things like 36V swing. The most I've heard is Philodox's custom McAllister tube amp that apparently has over 100V swing. My question is, if a source outputs a 2Vrms signal and an amp has a gain of 11 lets say, won't the maximum output...

So I realized as of late that I had not been using my K340's as much as I have in the past, and I think one of the main reasons is that it isn't as comfortable as my DT-770's. I haven't ordered the velour pads yet, for one reason or another, so I was thinking of ways to help in that department...

http://www.dyske.com/index.php?view_id=778 It discusses the perceived American mindset of music, which is more or less lyrically dominated, as opposed to others (they specify the Japanese) who tend to focus more on the music behind the lyrics. Personally, I subscribe to the "Japanese" view. I...

So I'm trying to acquire some high efficiency speakers at the moment for the dorm, so I won't have to listen to headphones all the time. Yesterday, I started thinking, would it be possible to turn the SOHA into a low powered speaker amp? As far as conversions, first off, use a higher rated...

Just as the title says, I want to start an online portfolio and begin investing my money. I just got hired by GT in a job that I can sustain through the rest of my college stay. So I will have a pretty stable source of income for the next 3 years or so at least. I want to start investing some of...

Hey guys, please post your meet impressions here! Overall we had a very good meet and lots of great equipment. I have to go somewhere now so my impressions will come a bit later. Aditya

For some reason, after I checked with my DMM to see what the output voltage of my HagUSB was, when I plugged my phones into it again, there was no sound and it displayed an error message saying "Bad DirectSound Drivers..." I then tried with some other output options that Winamp has, and the...

So I ordered my UE TF-10P's on Oct. 2nd, the day after UE opened their Pre-Pre-Sale. I know there have been manufacturing and QC problems and that full production will start in March. However, of the people that ordered in the initial Pre-Pre-Sale (that is, the people that submitted entries into...

So I was browsing through Siegfried Linkwitz's page earlier, and noticed that he had a page up for reference earphones. After doing some tests, he came up with an EQ circuit for the ER-4S, which has a -5db notch at 2.5KHz and a -8db notch at 7.5KHz. Apparently this makes things sound a lot more...

Well I have all my parts to recable my K340's, save for some heatshrink to make it look better. Got a couple questions though. When recabling, I am supposed to wire the dynamic driver and the PCB in parallel right? So it would be Plug>Dynamic Positive>PCB Positive and PCB Ground>Dynamic...

I just ordered some Cardas 4x24 cable for my K340's, since I wanted something better than Canare or Mogami, but I'm not quite ready to shell out for the full Headphile treatment (which is reserved for my DT-770's one day...). However, I have heard stories about the Cardas cables being really...