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Turning Scrap into a dual purpose preamp
Old 30th November 2018
Gear Addict
rvwainscott's Avatar

Turning Scrap into a dual purpose preamp


Checkout this youtube video where I take scraps & junk and turn it into a versatile preamp. If you know of someone that enjoys watching how these kinds of things are made then please share.

Old 2nd December 2018
Gear Addict
rvwainscott's Avatar

I did a minor change where I removed the "Air" feature since this unit has a fantastical amount of top end. I replaced it with this Atomic Jewell.

Old 10th December 2018
Here for the gear

Nice video, watching it now.

After spending over a year in software engineering I've decided to go back to what first got me into electronics and that's the analog world. A while ago I was going to start designing and building a basic valve pre-amp but missed the chance. I'm starting to play around again now so this is a good video for ideas.

I remember some of your old posts from quite while ago.

The Optometrist - and so it begins. . .

Always great ideas.

I'll look forward to more videos if your gonna do them that is!

Edit: Just a question. I haven't touched anything analog in quite a while. When you're testing the pentode section with the cathode follower you say you have a 40 volt output. Is that peak to peak? I'm assuming it is if your gain is about 100. So after the 3:1 output transformer where would this output go into? A mixing desk or another piece of gear I suppose. What signal level/voltage would other gear such as a desk typically need?

Last edited by samsm; 10th December 2018 at 07:07 PM.. Reason: Instead of making a new post.
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