[Roberval]

Thanks !
 
The cover I've bougth somewhere on Ebay, the main case is from Hammond and the two things as P3 jacks (I can use the RCA´s with my HT or the P3´s with a headphone).
 
First time I used a transformer (the top cover was higher), but I changed for a simple 12V psu and trim a bit the cover.
 
Instead of FET´s I used an OPA2134.
 
Before was like that :
 

 
The paint was getting blemishes, so I change to an automotive one.

 

[Ocean7]

Thanks !

The cover I've bougth somewhere on Ebay, the main case is from Hammond and the two things as P3 jacks (I can use the RCA´s with my HT or the P3´s with a headphone).

First time I used a transformer (the top cover was higher), but I changed for a simple 12V psu and trim a bit the cover.

Instead of FET´s I used an OPA2134.

Before was like that :




The paint was getting blemishes, so I change to an automotive one.

Thanks for the explanations. I prefer your updated version. More elegant!

 

[Jose R]

My most recent project, an M3 balanced amplifier with sigma11 dual mono power supply.
 

 

 

 

 
 
Build thread at amb.org: http://www.amb.org/forum/balanced-m3-design-considerations-t2702.html
 
Gallery of pics: https://www.flickr.com/photos/jomanos/sets/72157645794784231/

 

[gilency]

That is a very nice M3. Congratulations !

 

[Glyn1967]

This is my first headphone amp, based on the Appeared 47 with a gain of 2 setup to run my daughters AKG K551s

I used Panasonic FM and Vishay caps, opa2134 and buf634 and built it on proto board









I was in the process of making a hardwood enclosure for it when I had an unfortunate slip with the bench saw leaving me with a somewhat damaged block of wood and some badly cut fingers



It works great, far superior sound to the phone or tablet alone

 

[mwhouston]

Looks like a good start.

 

[Klechty]

This is my first headphone amp, based on the Appeared 47 with a gain of 2 setup to run my daughters AKG K551s

I used Panasonic FM and Vishay caps, opa2134 and buf634 and built it on proto board









I was in the process of making a hardwood enclosure for it when I had an unfortunate slip with the bench saw leaving me with a somewhat damaged block of wood and some badly cut fingers



It works great, far superior sound to the phone or tablet alone

Hope nothing serious about your fingers.

 

[HiGHFLYiN9]

Bottlehead Mainline headphone amplifier with powder-coated top plate, Jupiter caps, Cardas wire, copperleaf wood base. 
 

 

 

[mwhouston]

God! That's good.

 

[funch]

Your best yet! Love the brass screws, copper rivets and shields.  Neat how you got the powder coat to look like that.
 
I'm assuming that those mondo film cap's replace the 'lytics?
 
The knobs are Kilo? That style is my favorite, as is the Cardas wiring.

 

[HiGHFLYiN9]

Thanks! The big Jupiter caps replace the stock Dayton audio film caps, which are made by Bennic and a very nice value, but not the end-all be-all audiophile capacitor. 

 

[funch]

I thought those big film cap's looked familiar. I remember seeing seeing your amp in the build stages over at the Bottlehead forum.

 

[Sko0byDoo]

Very nice, tidy work!  Love how the wires are neatly together, perfect lengths and all...
 
Cardas 2 x 23.5 awg?    

 

[Roberval]

Impressive !!!

 

[HiGHFLYiN9]

  Cardas 2 x 23.5 awg?    

Yes indeed! I got a good 30-40 feet of it when Soniccraft had it on clearance. Great for internal wiring whenever a shield is needed. Takes a little bit of effort to prepare with the layers of tape to remove and the enamel to burn off, but totally worth it.