Regarding soldering:   I built my gamma-1 a few years ago. I used the 30 watt Radio Shack soldering iron, and it worked fine. I would encourage people not to let the lack of an expensive Hakko soldering station hang them up. I'm not saying more expensive soldering irons aren't better, of...

I ran across this trying to find a Dolby Headphone solution for macs. It's not what I was looking for, but it looks (and sounds; check out the demo videos) like it's a software crossover with 3D processing, similar to Canz3D. Has anyone tried it? What do you think? Demo vids and download...

I normally listen at fairly low levels, but I turned it up to get a good feel for the sound. I never quite understood how to determine how much current a particular set of phones will need. The Sennheisers have an input impedance of 300 ohms. Doesn't that indicate that they would be easier to...

I built a cmoy as my first project some time ago, and more recently an extended life version of the mini3. I've been enjoying the mini3 with HD650s from a gamma1 source, but I just went back to the cmoy and found to my surprise that in some ways I like the sound better. In all respects, looking...

I can go to 220 uF or higher on the output cap. Would it help or hurt to go to 1uF from .1uF for the high frequency capacitor? I think post-regulation is the right answer. What I'd want is a 12V to 12V regulator with good high frequency ripple rejection and low dropout voltage. Does any such...

I would like to explore suitable battery power options for portable headphone amps, relying on AAs. I threw together a boost converter using a MAX761 to provide 12V from four AAs to power a Cmoy amp. It works, but I can hear some high frequency switching noise when driving low impedance ear...

Quote: Originally Posted by tangent The best way is to use a plastic jack. The only other thing I'd recommend is nylon washers, which can be hard to find in exactly the size you'd like for the purpose. In the past, I've bought RCA jacks with isolation washers, which happen to have...

Thanks! That is very helpful, regarding the LED bezel. I will be eventually looking into DC powering the amp, so I think I do need to address grounding at this point. Still trying to figure out what's a good way to insulate the DC jack. Oh, and the DC-DC converter I mentioned would be to...

Hello. I just finished my first CMoy using tangent's very clear instructions. I've been listening to it uncased, and it sounds great. Now I'd like to throw it in a case and have something a little less exposed. I'd like to ask a few questions on some casing details I haven't found any...