Finally used these Mullard reissue EL34s in a SE UL amp with 3.5K 10W OPTs and external PS. Rec tube is a Sylvania 5U4GB and driver tube a Tung-Sol ECC803S gold pin but any 12A*7 can be rolled here. Also 6L6 and KT88s can be rolled as power tubes. Power tranni is an over specced Hammond and the amp steel chassis is Hammond also.http://retro-thermionic.blogspot.com/2024/11/perspective-el34-single-end-ultra.html
| retro-thermionic |
Edits: 11/19/24 11/19/24 11/19/24
This post is made possible by the generous support of people like you and our sponsors:
Topic - EL34 SE UL power amp with universal driver tube - mwhouston 18:01:37 11/19/24 (40)
- Why UL? - Gordon Rankin 11:47:58 11/25/24 (4)
- RE: Why UL? - mwhouston 14:30:58 12/02/24 (0)
- Agree - Triode_Kingdom 06:32:56 11/26/24 (2)
- In defense of the "universal driver tube" - Paul Joppa 12:09:24 11/22/24 (6)
- RE: In defense of the "universal driver tube" - PakProtector 05:35:48 12/05/24 (4)
- RE: In defense of the "universal driver tube" - Paul Joppa 20:54:34 12/06/24 (3)
- RE: In defense of the "universal driver tube" - mwhouston 17:37:08 12/07/24 (1)
- RE: In defense of the "universal driver tube" - Paul Joppa 08:49:43 12/08/24 (0)
- RE: In defense of the "universal driver tube" - PakProtector 17:35:17 12/07/24 (0)
- RE: In defense of the "universal driver tube" - Tre' 19:12:01 11/22/24 (0)
- I'm with Tre' on this one - Ralph 13:01:33 11/20/24 (19)
- RE: I'm with Tre' on this one - mwhouston 15:46:23 11/20/24 (18)
- RE: I'm with Tre' on this one - Tre' 06:51:24 11/21/24 (16)
- RE: I'm with Tre' on this one - mwhouston 14:03:29 11/21/24 (9)
- I have a number of different small tubes and wanted to try them all. - Ralph 11:12:57 11/22/24 (7)
- RE: I have a number of different small tubes and wanted to try them all. - mwhouston 14:57:34 11/22/24 (6)
- I get it now. Thanks. nt - Tre' 18:04:55 11/22/24 (0)
- RE: I have a number of different small tubes and wanted to try them all. - GEO 15:22:38 11/22/24 (4)
- RE: I have a number of different small tubes and wanted to try them all. - mwhouston 15:34:20 11/22/24 (3)
- RE: I have a number of different small tubes and wanted to try them all. - GEO 16:00:58 11/22/24 (2)
- RE: I have a number of different small tubes and wanted to try them all. - mwhouston 16:25:08 11/22/24 (1)
- RE: I have a number of different small tubes and wanted to try them all. - GEO 16:41:02 11/22/24 (0)
- RE: I'm with Tre' on this one - Tre' 17:16:16 11/21/24 (0)
- RE: I'm with Tre' on this one - GEO 12:08:07 11/21/24 (5)
- Now that is a convertible amp! nt - Tre' 17:25:37 11/21/24 (3)
- RE: Now that is a convertible amp! nt - GEO 13:07:07 11/22/24 (2)
- Nice build. nt - Tre' 18:07:41 11/22/24 (1)
- RE: Nice build. nt - GEO 19:15:34 11/22/24 (0)
- RE: I'm with Tre' on this one - mwhouston 16:57:48 11/21/24 (0)
- There is a reason David Manley grafted David Bogen schemos... 12AT7... clean sound - Cleantimestream 06:04:25 11/21/24 (0)
- Not very useful in a DIY forum without a schematic (nt) - Triode_Kingdom 11:02:07 11/20/24 (2)
- RE: Not very useful in a DIY forum without a schematic (nt) - mwhouston 20:14:49 11/20/24 (1)
- Thanks, it's always helpful to see the details! (nt) - Triode_Kingdom 21:49:49 11/22/24 (0)
- RE: EL34 SE UL power amp with universal driver tube - Tre' 07:14:29 11/20/24 (4)
- RE: EL34 SE UL power amp with universal driver tube - mwhouston 15:48:42 11/20/24 (3)
- Define "work well" - Tre' 07:23:52 11/21/24 (2)
- RE: Define "work well" - mwhouston 14:05:44 11/21/24 (1)
- RE: Define "work well" - Tre' 17:31:05 11/21/24 (0)