First class work. Simple but effective.

Very nice indeed!

https://www.head-fi.org/threads/oblivion-ultrasonic-studios.902926/post-15427047 This and the next post.

My aesthetics are a bit eccentric, I'd say the tophat needs a nice bowtie to finish the look!

Yes they have decent curves, they'll probably do pretty well. Sims (with all the caveats that sims have) seem to indicate EL12 is almost as good as EL81 and EL36 in this circuit. In real life it could be indistinguishable, or then again not. I would not recommend doing a 'workhorse' amp with...

In a few years you can get a next gen 3D printer and just print your chassis. You could print a plastic logo even now and screw it on top of chassis.

Sonic your drill has a display. You're not at the CNC level yet, but you're definitely pretty close. My drill has a handle and a cord. No display! Decent curves, to my eyes very pretty envelopes. Availability is a bit concerning though. EL11 has a µ of about 20, hopefully that's enough...

Visit Sweden, kill two ducks with one precision blow. Save on shipping. Nordics are at their best during the summer.

I take it these numbers are from measurements from Sonic? He did scale up the design somewhat, so those sound about right. My personal workhorse puts out about 1W and it's more than I'll ever need with speakers. Ears will give out before the amp starts clipping. Since it was asked, I will super...

There is a certain logic in this statement, it's true. But let me propose something else to consider: why not stop the search for the signature YOU want, and instead opt for maximum transparency and then enjoy the sonic signatures the ARTISTS wanted you to hear? Transparency, i.e. allowing the...

This thread is about Sonic's products and not general theory, but some of this might be very interesting to his customers and potential customers. If somebody is interested you can start a new thread (please link it to me in a private message) or just ask me in a private message. I'm happy to...

Before I give my comments I'd like to take an opportunity to thank everybody who has made reviews or even just some comments on their listening experiences, it is very interesting for me to read personally, and everybody has been very good with their words and descriptions. So thank you for...

The load in question is an active load, it not just resistive. So it can actively keep delivering current (the 18mA) even as Va approaches B+. So it is drawn just as I did. That is also how it behaves in reality. A passive component, be it a real resistor or a coil that is assumed /...

Try watching a well mixed horror movie with Sonic's amp and headphones. It's a unique experience.

Well the EL36 and eq don't really have room for positive grid operations, maybe a volt or two, but grid current is a real thing in low negative grid region already, as well as thruout the whole range to some extent. The control grid is located very close to the cathode in comparison to the...