DIY Audio Projects Forum

GU 50 Amp
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Author:  gofar99 [ 13 Apr 2018, 15:36 ]
Post subject:  GU 50 Amp

Hi, Has anyone used a GU50 in a SE U/L amp? I'm thinking of doing that. About 400B+ with around 75 ma cathode current. Load likely in the 3-4K range. It looks like it should behave about like a KT88....

Good listening

Author:  Geek [ 14 Apr 2018, 05:54 ]
Post subject:  Re: GU 50 Amp

Looks like some work was done on one over at Shannon's forum: ... hilit=gu50

Author:  Soundbrigade [ 14 Apr 2018, 06:43 ]
Post subject:  Re: GU 50 Amp

I did once build one.Of some reason it was scrapped, maybe because I wanted the components to build a 50CA10 SE-amp.
Let's see what I can come up with ...

Yepp, here it is:

I used the top schematic with EC52 driver.

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