Haha I guess it's because I attended a school where "oh snap" and "oh shiiiii-" were the most common phrases for expressing realization, recognition, surprise, acknowledgment, and/or appreciation.

I remember the days of "oh snap." It was over 10 years ago.

Jim is ready to take pre-orders for his new headamp half-kit. Check out his latest blog update:

http://www.hagtech.com/blog07.html

I have to be brutally honest, $100 for a PCB, instructions and what sounds like just standoffs and a few other minor parts doesn't excite me enough to order it.

I have to be brutally honest, $100 for a PCB, instructions and what sounds like just standoffs and a few other minor parts doesn't excite me enough to order it.

My sentiments exactly.

http://www.hagtech.com/images/castanetschem.jpg

That's a pretty easy p2p job.

That is no way to do low impedance headphones, with one winding completely

unterminated. Needs to be wired with a switch that puts both secondaries in

parallel for low impedance phones.

That is no way to do low impedance headphones, with one winding completely

unterminated. Needs to be wired with a switch that puts both secondaries in

parallel for low impedance phones.

I didn't even notice that, but I didnt look at the wiring over there much. That does look pretty silly.

That is no way to do low impedance headphones, with one winding completely

unterminated. Needs to be wired with a switch that puts both secondaries in

parallel for low impedance phones.

Any other thoughts on the circuit? I'm planning a very similar build for my first tube amp with CCS instead of chokes for the plate load.

To my untrained eye (Kevin can correct me) it sure looks like a pretty run of the mill common-cathode (unbypassed) transformer coupled amp. Sound quality will greatly depend on the output transformers that are chosen. I don't know what was spec'ed as I really didnt look into the parts list.

I don't think the parts list is available, Jay, that's part of what would come along with the documentation of the amp.

That is no way to do low impedance headphones, with one winding completely

unterminated. Needs to be wired with a switch that puts both secondaries in

parallel for low impedance phones.

Partial answer:

Hey, that would be great, if only there were two secondaries! The 119DA has only one with two taps (autoformer style) of different ratios. No possible way to wire in parallel.

To my untrained eye (Kevin can correct me) it sure looks like a pretty run of the mill common-cathode (unbypassed) transformer coupled amp.

Choke loaded parafeed, with ultrapath connection and bypassed cathode. It's not something I see every day.

Choke loaded parafeed, with ultrapath connection and bypassed cathode. It's not something I see every day.

What are your thoughts on what KG said?

bypassed cathode. It's not something I see every day.

I think I meant to write bypassed. Either way, it was a bit different that what I was referring to, hence my apprehension.

Any other thoughts on the circuit? I'm planning a very similar build for my first tube amp with CCS instead of chokes for the plate load.

Anyone else have an opinion on the circuit?

What are your thoughts on what KG said?

Fully agree. I learned the hard way from personal experience.

Any other thoughts on the circuit? I'm planning a very similar build for my first tube amp with CCS instead of chokes for the plate load.

Better hope you have Grados and a source with a healthy output. The circuit has very little gain so with Senns or AKG's you might well run out of volume. I'd say try out the Less-pressivo, but those 6C45P tubes are pretty twitchy so you'll have to do a good job on your layout and grounding.

I'm actually planning on the Less-pressivo with a 6H30, and I'm using RS-1's. I just asked about thoughts on this schematic as it's similar in idea to the Less-pressivo.

I'm actually planning on the Less-pressivo with a 6H30, and I'm using RS-1's. I just asked about thoughts on this schematic as it's similar in idea to the Less-pressivo.

What transformers are you using for your Less-pressivo? Hammonds?

Donuts are your friend. The Amveco 6208X series transformers work great as parafeed or push-pull output transformers. I used them in my 6C45P and 13EM7 test builds, both were parafeed output. I think they're better than Hammonds, even though they're meant to be power transformers.

I was going to go with the hammonds, but aerius' suggestion to use a toroid intrigues me. I've read about a couple applications where they work well on output.

Of course, if I like the sound enough, I could end up getting a set of better output transformers like Elecra-Prints or Lundahls.