Sorry no other photos, the wiring may look a little confusing at first, but it's not really, you'll work it out quickly I'm sure.

Not much of a mod really, but it may interest some of you. I had a problem with a broken driver (the right one, perhaps a common fault?) in my ATH-M50s. I couldn't find any original drivers for sale so I replaced them with the drivers from a pair of Koss KSC75s (also 45mm and a near perfect...

I had  the same problem with a right broken driver, annoyed the hell out of me. I couldn't find any original drivers for sale so I replaced them with the drivers from a pair of Koss KSC75s (they were a perfect fit). The sound is pretty good, although I'm not sure how well it compares to the...

I put my amp together today, everything was looking great , I'd even found a working power supply in a junk bin for $2 and some nice 1960's tubes ..... final job mounting the Mosfets to the heatsinks .... Doh! I realised that I don't have any of the ceramic mounting kits. Does anyone know where...

Hi, The boards arrived today. They look fantastic,   Many thanks!

Just wanted to say thanks for this post, I needed to replace a damaged cable in my M50's and it was very useful to see them stripped down before I started work.   Actually, it's been such a long time since I last used mine I had forgotten how good they sound, great pair of budget...

Hey Grumus, I'm not as qualified as the others to answer your questions but I'll give it a try.   1. I think the only advantage using a stripboard has over point to point is that it's easier to build it that way for those of us who are not used to following circuit diagrams or who are not...

I'm very happy with my O2 amp. I think you can get them pre build for about $150

Quote:   Thanks for the info, as you recommended I'm now using the Wilma's as bypasses and I'm pleased to report that it does seem to be a nice improvement , highs are much brighter and clearer (it also makes me happy that the Wilmas' are being put to good use). I have to make a trip into...

I just wondered if anyone is using bypass caps, and is there any particular value in it?   It's going to be a while before I get new output caps and wondered if using the Wima caps that came with the Skeleton DAC kit  in parallel with the Nicon 220uf caps I am using at the moment would be a...

I think it's very good, but I'm no expert. Like Tomb said in an earlier post, make sure the power supply and tube you want is available / and within your budget. I paid about $20 for the tube, but only $3 for the power supply,  so the total cost was about $50. I bought my tube from a seller on...

Hi, Thanks for such fast responses, probably not the most elegant solution, but in the end I just removed the Mini USB connector bent pin 5 out horizontally (so it was sticking out the back of the connector) and wired the switch between that and the 5v pad, then soldered the connector back onto...

Hi, finished my DAC last night, the 2704 went down well, I flooded the pins and the wicked off the excess solder. I tried the wipe method first but I just couldn't get it to work. In fact the most difficult (and time consuming) thing was getting the surface mount components out of those tiny...

That is is one very cool looking amp! I remember reading on the original SSMH thread about about the problems you had with your clear case and heat, which is one of the reasons why I stayed away from plastic and wood. I listened to mine for about 1 1/2 hours last night and heat sinks got hot...

Thanks for the encouraging words. Still a few things to do, such as Kim mentioned,shortening wires, and moving R16/17 and R14/15 closer to the pot and tube socket. It was just luck that I had used 2 ground wires and twisted them around the signal wires, I didn't expect any advantage over such...

  Thanks to everyone for their help today, I managed to get the amp up and running about an hour ago, after a few false starts. It's nice and quiet, in fact with nothing playing I can turn it up to about 80% before I even get a slight hiss. It sounds very nice as many people have said, but I...

Thanks, everything is wired in to place now. But it looks like by following the original design I have the wrong polarity on C3 and C6.

Thanks I'm glad you told me about R6, I had a the R8 390k resistor there,  so actually R8 & R10 are missing from the diagram,  am I right in thinking that the jumpers either side of C4 are wrong and should actualy be R7 & R8 and the and in place of R7 in the  current diagram in should be R10?  

Many thanks , I soldered everything onto the board today and the case is already done, so hopefully I can start testing it out in a day or two.    I noticed that R6 is missing from the stripboard design, was there a specific reason for this? I've been though the whole thread but couldn't...

Quote: Fantastic effort, thanks so much for sharing (also of course thanks to everyone who helped you), I'm starting my build using exactly your stripboard design. It might be a bit of an obvious question to most people, but where did you connect your LEDs; also I know it was quite a...

The only other headphone amp I have at the moment is the Nuforce UDac2, which to tell the truth I've never really liked. The Nuforce of course has a much cleaner sound, you can hear a hiss with the tube/CMoy amp if you turn the volume right up when nothing is playing, but somehow it sounds...

Quote: I often have trouble with front/back positioning, I think that might be something to do with the limitations of the human ear. This Wikipedia page is interesting http://en.wikipedia.org/wiki/Vertical_sound_localization , have a look at the Cone of Confusion, it seems that we need...

Quote: Me neither, the up/down was movement was very cool, but I almost jumped out of my skin when the guy whispered in my left ear.

Quote: I should have mentioned that the kit I made was from fred_fred who is an Australian Head-fi member, I'm sure he can answer any questions.