[eddie0817]

Tube DAC CS 4328
 
https://www.flickr.com/photos/93828100@N00/sets/72157639763477653
 

 
Preamp LH0032+0033
 
https://www.flickr.com/photos/93828100@N00/sets/72157625927446955
 

 
Power amp classic A 60W
 
https://www.flickr.com/photos/93828100@N00/albums/72157623931977294
 

 

[Pars]

DynaFET (working) that I went back to several years after building it (and having oscillation problems). Got the oscillation problems ironed out (gate zobels ala Bob Cordell, ferrite beads, and yet to be installed Amb zobels, ala B22).

As far as I know, this is the only working one out there (other thank KG, but I've never seen or heard it). Mock up of layout before I case it up. I will probably replace the sigma22 PSU with a GRLV set at +/-30V. I am thinking I will also put the amp boards on the right heatsink and the transformer/PSU on the left side, and use the heatsink for the PSU pass devices.

This sounds really good. I also have a pair of dynahi boards I can swap in/out, and I prefer the FET version so far. I'll need to do some more comparison listening though.

 

[DutchGFX]

Not a picture but here's a video of an electronic instrument I built in school. I did all the electrical and hardware work, and did some of the code, promarily the data fitting

 

[rellik]

Dude, is the electronics tech lab still there.? How about Richard Dean Andersen. you know Jack O'Neil from that hit series Stargate.
Its kinda near the comp sci lab and closer to the machine shop aka the old automotive tech lab. and maybe a bit of drywall... Try to figure out what the oscillator/synth and the football dac are doing.

Breadboards do go bad. More likely a self error generating UV erase ROM module with a UV led on the top glass window. It sounded bad in '06 but i guess it can also programma tetragramma tech via UV bulb and/or DAC feedback punchies. hehe. not so funny am I...oh yes I am. Do the dance Dukakis. Please do the dance..... Seriously DO the dance.

If you dont believe me, just take a look from the Outside of the school, dont worry. Im sure they will let you back in.

Legal etcetera, this post is a vague description of a electronics "build".

 

[tomb]

New ECP Audio Walnut DAC 5.1. Similar to the one I posted several pages back, but this one has Lundahl transformers on the output. Dsavitsk found some really nice looking walnut for me to use! 24 bit, 192 Khz, asynchronous USB:

 

[funch]

Simply elegant. Is this production, or a one-off?

 

[Ech0]

@tomb, very nicely done. Elegant indeed. .

 

[Pars]

Looks great Tom!

 

[bluebyte60]

My beta22 and sigma22. They take me months and almost drive me crazy. The final build is not perfect but I am happy it works!!! The internal is not too elegant so I rather not show its ugly truth lol

 

[SonicTrance]

Great looking projects everyone!

Here's my new balanced headphone/speaker amp.

 

[funch]

Beautiful. I followed your build 'over there'. It turned out first class. How does it sound?

 

[funch]

My beta22 and sigma22. They take me months and almost drive me crazy. The final build is not perfect but I am happy it works!!! The internal is not too elegant so I rather not show its ugly truth lol

Great job. This looks so professional that we need to see inside.

 

[Mullet]

Here's my latest project. I obtained some boards from Head-Fi user muskyhuntr a few years back, put them in a closet and almost forgot about them after building my EHHA Rev A amp. The EHHA has been a really good amp, but in my opinion, but not great - too much hum. So I decided to try something else. I'm glad I finally finished this amp, because I think it's a real winner, especially since it's so simple yet elegant. I like it better than the EHHA with certain headphones.

Here is the project page...
http://diyaudioprojects.com/Tubes/6DJ8-Tube-Headphone-Amp/

This particular amp has output transformers that match with either 600Ω or 300Ω headphones with a flick of a switch. It also uses a pair of 6DJ8 tubes, which are very easy to get at a decent price. So the price is low to build... maybe $300 in total with a pair of tubes. The chassis was the most expensive part of the amp.

Special thanks to vixr, @muskyhuntr, and Bruce Heran for this project.

Here are a few pics of the build...

 

[muskyhuntr]

Great work, looks good! I love mine. I tried to get Bruce to release a set of boards to make this amp available to others, but to no avail.
The problem with the EHHA was that it was designed by committee. As such, there were about a thousand ways to ground the amp. Some worked in in a few situations, others worked in other situations.
I was lucky and got mine hum free on the second try. My final solution was different from what was suggested on Cavelli's web site.

Me

 

[Whitigir]

Wow nice, didn’t know we have such sub forum here