hybrid master-plus

[C Moore]

Is there any Scuttlebutt on the Master Volume from Third Power.?
Is this more of a "power scaling" kind of a thing, or is it a variation of a LarMar MV.?
Thank You

hhhhmmmmm.....maybe a sign of things to come.?
Perhaps Bad cat is also pending a similar patent.?
http://www.badcatamps.com/blog/k-master ... t-do-this/

http://www.premierguitar.com/blogs/5-da ... technology

https://www.youtube.com/watch?v=3x9NKxZ7298

[gary]

bumping this query.

Anyone able to take an educated guess about how it's done?

[Firestorm]

Sounds like two different things. From the descriptions, I would guess the Third Power approach is some form of power scaling. The K Master sounds like a post-PI gain stage.

[C Moore]

Post PI Gain stage.?
So another dual triode...phase invering, that has a volume control.?
Thanks

[teemuk]

I don't know what the "plus" brings but the initial HybridMaster circuit was a dual-potentiometer arrangement where one potentiometer channel was wired in as an ordinary master volume control and the other channel used as a variable resistor to control phase-inverter stage's current ("bias resistor") and therefore also its clipping threshold.

Link to patent application via Google Patent Search:
https://www.google.com/patents/US20130028447

[C Moore]

BTW.....thanks for that link.
Very Interesting