It's been a while since I've been on this forum -- while cleaning out my garage I found 1 never user CTH Rev A PCB - if anyone wants it for the cost of the PCB and shipping from Ottawa, Canada let me know? Not sure if should put this in the buy/sell but wanted to pass it to the DIY community first.

I fried one of my AKG K81DJ drivers.  A fellow head-fi'er here gave me a great price on a K518 driver.  Aside from a post I found somewhere reportedly from an AKG rep which said the drivers are identical, I could not find other confirmation.    I took a photo of the two.  From the drivers I...

On the IPOD connector side of things one has ground, left and right signal out.  When creating a line out cable to RCA, you obvisouly need four signal wires on the RCA connector side of things.   More out of curosity than anything, can anyone think of pros / cons of the following options...

Hi All,   I currently own a set of Beyerdynamic DT440's and using them with a Mini3 amp hi performance edition.   I'd like to try out a tube amp and seem have settled between the Little Dot MKIII ($250 US shipped to Canada), or the Millet Minimax (Kit from Beezar is the same price, but I...

As the title says, RE0 + Mini3 Amp + silver plate cable (spc) line out = lots and lots of bass.  I love the RE0 found its level of bass just fine.  But saying that, I recently built a spc line out for my ipod (nano 4th generation), and coupled with the amp, the base is much louder, impactful...

I'm 3 days from travelling and my ER6 filters became clogged. I decided to try a little cotton batton in place of the filters. I figured that it may at least keep the ear wax out. Anyways, sound signature is definitly different. To me the bass and mid is improved and it doesn't seem like...

Hello all, I have read and re-read posts for 2 days now and thoughts I'd fire a post out. My first IEMs were ER6i. They got stolen and I went to ER6. I was a little dissapointed in ER6 but I think mainly because the tri flange fit of the 6i much better then the bi flange. I used them both...

I built 2 AlienDACs, regulated USB power with Jeff's kit with the Elna electrolytics he supplies for DC blocking. I ordered Aerovox AFPS 4.7 uF (metalized polypropylene) caps from electronic goldmine on the recommendation of http://ecp.cc/cap-notes.html. They sent AREM 4.7 uF (metalized...

For my portable amp I built a buffered class A cmoy with DC power / charger, powered by 18 volts (two 9V). All the design was taken directly from many articles from http://tangentsoft.net (thanks Tangent!) All I did was piece together sections I wanted. Anyways, it fits in a plastic Serpac...

When building a CMOY, you only need to power each channel of the opamp, and can easily route power wires on the bottom side of the perf board. I recently built a class A buffered CMOY. So I needed to power 2 buffers, 1 opamp, 1 led, and two JEFT cascades. My design didn't allow alot of room...

If I've created a JFET cascade to bais an amp channel into class A (as described on tangentsoft.net), should I be able to measure it's current draw? I used a 9V battery attached to the 'input' (where you would normally connect between the opamp and buffer, and attached to the negative...

I've created a CMOY amp with single BUF634 on each channel, setup as a single feedback loop. OPA2227 as the opamp set to gain 6. I checked the power section as I went, and it's functioning correctly, +/- 9V. One other channel is functioning perfectly. I've removed flux, there are no cold joints...

Well, eBay finally bit me in the butt. I bought the Xytronic 253 soldering iron from a UK vendor, and of course, completely forgot the UK uses 230 volts. So, I replaced the plug with a 3 prong grounded 110 volt plug. The iron works great, I created three buffer stacks for my PIMETA, and one...

Well, going through my late grandfathers stuff I found an old pair of Sennheisers HD40. They still sound great, but the yellow ear pads are definitly past it (from what I gather on this forum, this was a common problem with them). Does anyone have a suggestion what to use to replace the ear...

Hello, First off, great forum folks. Everybody here makes it a joy to DIY audio because of this resource here. Sorry in advance for this long post! After creating a few CMOYs, and A47s, I moved up to a PIMETA, and it sounds great! My configuration is stock as per Tangents site, here are...