Just realized this meet was in my backyard, registered! It's going to be my first meet, looking forward to it!    Question, it seems like reading through the thread that there's almost too much gear! Will there still be space to set stuff down? I'd like to bring my Stax SR-202s, an eXStatA...

Quote: I really, really wanted to make a hybrid version of this amp using EL34s as output followers, but the analysis didn't bode that well. (SS won in distortion measurements in all frequencies by about an order of magnitude) Tubes introduce a lot of phase shift (their poles just stack and...

Quote:   Yeah, a large problem is definitely the cooling issue. It was nearly impossible to solder together the magnet "bond wires" I used for the TO-220s in this case, cool idea, terrible execution. I'm working on a second set of PCBs right now that use onboard heatsinks; I'll probably...

Thanks for pointing that out; I've updated the top post. Both of these errors made it to my PCBs, but weren't present on the simulation diagrams. Luckily I had the foresight to check my boards before powering them up, otherwise they would've blown...     Is there any easy source for the...

Hi all,   I designed a electrostatic headphone amplifier with a couple goals in mind: cheap parts, no specialty items, all available from Digi-Key (in stock!), including transformers good sound no matter the component tolerances   The end result was a high-gain voltage amp (around...

I finished casing my amp up a while ago but never got around to taking pictures: Went the standard Nabu case way and didn't worry about looks too much, I don't have a lot of tools here to make the cuts etc. properly. Everything still sounds great with the gamma-2 as a...

Hey all, I've been listening to my SS amp for a while now, and here are some initial impressions. My previous setup was a Stax 2020 combo---SRM-252A + SR-202, with stock Stax cables and a gamma-2 source. Only thing that's changed is the upgrade to an eXStata. - detail is incredible! The...

Hi all, Figured out my issue: if the input JFETs aren't matched, then the trim pots won't be able to get the offset down to zero. Turns out I probably mismeasured or miswrote the Idss when I was testing all of them, so I matched another quad and went for it. On another note, it took me 60...

Hey all, I just got my boards up and running, but I'm running into a problem: One of my boards has huge DC offsets, with Out- at +47V and Out+ at -23V. The inputs were tied together to ground. No smoke, double-checked connections, and the rails are at +/- 300V. The other board is just...

Hi runeight, I'd like to grab a set of SS boards. Could you add me to the list? Thanks! cyanoacry

I know for one that my friend Kaori's made a pair of his own -- look at the top of this page. As for the sound quality, I haven't had the money or the time to go out and find a place that demos them, much less buy a pair. I'd rather spend the money on CDs to listen to. For my ears though...

Homemade Headphones They sound really good for the cheap parts and simplistic design -- maybe a little bit boomy on the low end, but not horribly so. The gift-amp sounds okay itself. While I'm sure it doesn't stand up to any of the professionally sold amps from HeadRoom or anybody else...

Yeah, mine are just regular drivers that I picked up from a surplus electronics store. They're about 4-5" across, and came with a 1W rating, frequency specifications of 160Hz-10000Hz. They sound incredibly awesome compared to cheap earbuds or anything of the same price. Kaori and I have...

Just finished my latest hacking endeavor and ended up with a pair of homemade headphones for relatively cheap (about the cost of two speaker drivers: $7). They sound really good for the price I paid; they're also comfortable due to the foam that I used. I scavenged the band from an old...