Something a Little Different

About a month ago I had an exchange with a reader talking about The Purpleheart Signal Meters and modifying the project to provide multiple inputs and some gain balancing. I’ve been giving this a lot of thought in the last couple of weeks because I have the same needs. So I think this is going to be my next major project.

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Not Quite Done

There are a variety of sayings, axioms, proverbs, or quips which could apply to me this afternoon. A few which come to mind include:

“How wayward the decrees of fate are”Vanitas Vanitatum – William Makepeace Thackeray

or this one:

“Pride goeth before destruction, and an haughty spirit before a fall”Proverbs 16:18

or just the simple axiom:

“It ain’t over till it’s over”Yogi Berra

In any event, it would seem that “Final Chapter” or no, I have one more post concerning the Color Preamp.

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The 12AU7 “Color” Preamp with Improved Buffer

Lots of work has been going on the last couple of days working on an alternate buffer design for the 12AU7 “Color” preamp. As readers should know, I was not particularly pleased with the performance of the previous buffer circuit. It was bottoming out at too low a voltage. Now however, I have a simple change which yields much better results.

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