Photo Gallery

[niclaspa]

I recently got the itch and built another preamp which oddly enough I had the parts for laying around.
Due to it being the eighth one I've built on this design I tend to order lots of parts and have them stashed everywhere...
I've still got to wire the cinemag transformers on the moving coil phono input, but the rest should work...

Very nice build!

I think that you use relays for switching between sources. Did you make the circuit board with the relays yourself or is that unit available for purchase?

 

[alex mm]

I also finished, the last amplifier, in the Dracon series, the number four. Same scheme, same PCB, same quality components .

 

[jcalvarez]

I also finished, the last amplifier, in the Dracon series, the number four. Same scheme, same PCB, same quality components . View attachment 1054646 View attachment 1054648 View attachment 1054649 View attachment 1054651 View attachment 1054652

Elegant simplicity! Looks great, congrats!

 

[kodabmx]

After a week of waiting for the volume board and a couple of pots, it's finally wired up.
No tubes installed yet, but it turned on so there's no shorts
I don't expect any 120Hz hum 12V SMPS to DC-DC converter to 400VAC to TL783 linear regulator boards for 340V for line/HP and 350V for phono, 280V DC boost for 6E2/IN12/IN13, 5V for volume and S/PDIF out, 12V for heaters, relays, and bluetooth.

 

[kodabmx]

I put the tubes in... At least it looks the part
The knobs are just cheap placeholders...

 

[kodabmx]

Look, Ma! It Works! Just like it said in the encyclopedia! LMAO

Not sure I like installing the IN13 tubes with Crazy Glue but whatever, I'm using it not shipping it.

Now I have to make 2U of space in the rack for the damned PSU.

 

[spirakos]

Hey Koda, i really like the tube arrangement. The wiring should be a headache. Maybe a second topping to cover all these screws
It seems you are going to mount it in a rack. More photos are needed
What circuit did you use to drive IN13??? I have a couple sitting silent

 

[jcalvarez]

After a week of waiting for the volume board and a couple of pots, it's finally wired up.
No tubes installed yet, but it turned on so there's no shorts
I don't expect any 120Hz hum 12V SMPS to DC-DC converter to 400VAC to TL783 linear regulator boards for 340V for line/HP and 350V for phono, 280V DC boost for 6E2/IN12/IN13, 5V for volume and S/PDIF out, 12V for heaters, relays, and bluetooth.

Do you ever build something small?

 

[kodabmx]

Here it is in the "rack"... I still need to adjust the IN13s - they are set too sensitive. Also, my "EQ" input has a misbalance I have to look for.
The phono stage is nice. Average noise is ~ -77dB. Majority of which comes from the 6N2P input. Next, I will mock up one with LND150 instead to see how that works

The IN13 circuit was a kit bought from a Russian guy on eBay who is now "Away" until December 2030
Here's a copy of the schematic.

 

[kodabmx]

Do you ever build something small?

Here's my smallest. It's just a gain box.

 

[Suncalc]

My latest little zero feedback SET. And a matching set of VU meters in their own box.

Fun little project.

 

[jcalvarez]

My latest little zero feedback SET. And a matching set of VU meters in their own box.

View attachment 1056114
View attachment 1056115
Fun little project.

Beautiful build! Is that a double triode tube, the big one?

 

[Suncalc]

Beautiful build! Is that a double triode tube, the big one?

Thanks. Yes, that's a 6AS7G. Each side of the 6AS7 is driven by a dual triode cascade. The chassis is purpleheart with four coats of oil and the top and front plates are aged copper. It came together nicely.

 

[kodabmx]

The amplifier I built my dad for his 75th birthday. I just permanently repaired a PSU issue.

 

[jcalvarez]

The amplifier I built my dad for his 75th birthday. I just permanently repaired a PSU issue.
View attachment 1056533

Menacing looks, like military equipment 😊

 

[jdg123]

It’s interesting that even playful mention of menace made think of how the way a tube amp lights up reduces the normal machine identity 🙂 i a,ways think about how my amps light up, it’s part of the design ⚙️💕

 

[6A3sUMMER]

Lots of nice photos everyone.

But . . .
The US navy electronics equipment we had on a Fletcher Class destroyer did not look anything like the photos on this thread.

Just my opinions and experience

 

[alex mm]

Just added, another amplifier, to my collection.

 

[CijTele52]

 

[potepuh]

Nice collection.