It has been a while since I was a regular here but I haven't forgotten about my love of small amps. Wanting a small amplifier for work I decided to get on a project that I had put off for a long time and I'm extremely pleased with the results.   The 12AE7 is, for all intents and purposes, a...

For those of us that design our own amplifiers anyways... I had been soldering to sockets for a while and it was getting a little old having to desolder connections to move stuff around so I decided to try a new approach. This only works with 8 pin octal tubes but that's usually what I'm...

I just need a stereo one but I'd like it to match the 3.5mm. Anybody know of a line of minis that look the same between the two sizes? No gold please. Cable diameter is .19 inches plus techflex.

I guess that's what you call it. I was listening to a song, Bodyrox feat Luciana - Yeah Yeah, at work and I noticed that the tube amp I'm using here has more punch to it then the PPA does. The tube amp has no bass boost and while I installed it on the PPA, I rarely use it. The tube amp uses...

I'm trying to get a clip of the sound but apparently I need a mini y adapter to get the load i need on the amp for the condition to exist. When listening to music it sounds like the amp begins to distort when only high notes in music play. I thought maybe it was the headphones but my PPA nor...

Saw this DAC on eBay. Anyone have experience with it? Features: 1. Digital receiver CS8416 ~ 32 kHz to 192 kHz sample frequency range ~ Low-jitter clock recovery 2. Up-bit modular CS8421 ~Our Daughter Board design means you can either up-sample (when plugged in) or go without...

Since I enjoy P2P and after seeing digi01's super nice P2P amp I decided that instead of buying a PCB and all that for my tube driven surround sound with a window front I would go point to point. It'll add to the 'uniqueness' of the amp rack I think. Now, I'm running into a problem. I don't know...

Anyone running this combination? I was extremely careful and checked continuity on ALL of the pins on the 2702 and even looked for shorts. It sees a device, the LED lights up and the voltages out of the regulators check out good but windows installs an 'unknown device'. Thanks!

What does it mean for sound quality? I just bought opamps for my PPAv2 that have a slew rate of 180V/us @ 30ma and while looking up the opamps in my SB Audigy I noticed that the headphone amplifier has a slew rate of 3V/us @ 70ma. Would headphone sound quality improve if I were to swap the...

I can't find anywhere a pros and cons of each on the net anywhere. Any links? Also, in a capacitor coupled, say output stage, does the output transistor pull up to its biased say 18v and hang there with no output load unless there is AC or does the capacitor provide some sort of load under DC...

What is the difference between these? I'm building a hybrid headphone amp right now and will get to an all tube headphone amp but i want to build a power amp for driving my regular home speakers first and was wondering what the differences are? Headphone amps are relatively cheap in...

A little background on what I'm doing. I'm installing an FM modulator in my Durango, it has power lines in and a pair of wires for a switch. I want to make a cable that, once connected via the control box will allow a circuit in there to turn on the modulator, carries 5V to the mp3 player if the...

I notice that a lot of people here use torodial transformers in their projects. Any particular reason why? Every power supply I've ever made has been with an EI style transformer. Is it noise or limited space? The power adapters I make I connect the DC out to a cmoy of mine with maximum gain...

So before joining this forum I was, shall we say, content, with the way my music sounded. It wasn't the best, my little 2.1 sound system played adequate for my listening needs. Fast forward to now, I've got a nice solid state amp here with nice set of phones (a couple actually), should be...

Using my computer as a source isn't really working out well for me. I like playing music from it because it is easy to navigate and setup an on the fly playlist. My problem is noise that comes from the computer. The noise sounds like system noise, when i nav menus it changes, sounds like the...

What do you normally use? I did some fooling around with my cMoy(TS922 opamp) and the silver micas sounded horrible(very 'tinny' and no low-end at all) in comparison with the polyester film .1uF caps. I have yet to try some of the polystyrene caps I have here even though I have many of them...