ask your general tube related questions here
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- PCLxx/ECLxx amp
by 6B4G » Tue Jan 04, 2022 9:55 am
- 7 Replies
- 66558 Views
- Last post by 6B4G
Wed Feb 02, 2022 9:58 am
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- Different tube distortion - why?
by soundbrigade » Sat Jun 11, 2016 8:59 am
- 3 Replies
- 10722 Views
- Last post by ruffrecords
Thu Dec 02, 2021 6:38 am
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- slow death spiral
by nyazzip » Mon Mar 25, 2019 1:18 am
- 22 Replies
- 49723 Views
- Last post by AmadeusMozart
Fri Nov 19, 2021 10:19 pm
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- 12AU7
by bone » Sat Jul 03, 2021 2:19 pm
- 2 Replies
- 8249 Views
- Last post by ruffrecords
Thu Sep 02, 2021 6:36 am
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- Good inexpensive OPT transformers or going hybrid.
by jukingeo » Sat Mar 13, 2021 12:26 pm
- 6 Replies
- 9673 Views
- Last post by AmadeusMozart
Sat Jul 17, 2021 9:42 pm
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- 6AS7 OTL Headphone Amp - Removing the 5u4
by coop402 » Tue May 01, 2018 4:22 pm
- 14 Replies
- 30253 Views
- Last post by battradio
Fri May 04, 2018 3:12 pm
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- 71A/50 SE amps?
by lego4040 » Fri Mar 23, 2018 1:15 pm
- 1 Replies
- 9034 Views
- Last post by DeathRex
Sat Mar 24, 2018 6:29 pm
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- Korg Nutube and GSP
by kheper » Thu Jan 04, 2018 1:39 pm
- 9 Replies
- 16087 Views
- Last post by Geek
Thu Mar 08, 2018 2:41 am
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- Amp PSUs - Joule per Watt?
by soundbrigade » Mon Jan 01, 2018 3:53 pm
- 5 Replies
- 11253 Views
- Last post by Geek
Fri Jan 05, 2018 12:56 am
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- Vacuum Tube Analyzer
by paart » Tue Dec 26, 2017 9:53 pm
- 1 Replies
- 8952 Views
- Last post by Geek
Tue Dec 26, 2017 10:29 pm
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- ECL82/PCL82 amp
by 6B4G » Sun Dec 10, 2017 9:47 am
- 6 Replies
- 14673 Views
- Last post by 6B4G
Tue Dec 12, 2017 11:03 am
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- Eico ST-96 tuner.
by DeathRex » Mon Nov 04, 2013 9:07 am
- 10 Replies
- 18041 Views
- Last post by DeathRex
Sat Nov 11, 2017 4:43 pm
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- Help I.D. a 300B Brand?
by Geek » Sat Sep 23, 2017 10:08 pm
- 6 Replies
- 12581 Views
- Last post by Geek
Mon Sep 25, 2017 10:20 pm
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- Photobucket
by DeathRex » Mon Jul 17, 2017 8:03 am
- 2 Replies
- 9828 Views
- Last post by DeathRex
Tue Jul 18, 2017 9:56 am
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- single ended gu50 schematic
by willie » Fri Oct 17, 2014 4:19 pm
- 16 Replies
- 32590 Views
- Last post by DeathRex
Wed Jul 12, 2017 11:29 am
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- Power supply question
by dannyr » Sat Jun 24, 2017 3:05 pm
- 8 Replies
- 15209 Views
- Last post by dannyr
Sat Jul 01, 2017 1:32 am
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- New Output-Tube Testing Method
by paart » Thu Jun 15, 2017 10:05 am
- 1 Replies
- 8998 Views
- Last post by Geek
Thu Jun 15, 2017 8:12 pm
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- PPP 6CB5A schematic? Look OK?
by Blair » Mon Jun 10, 2013 1:58 pm
- 43 Replies
- 72376 Views
- Last post by Blair
Mon May 15, 2017 8:11 pm
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- Speaker impedance. How close should actual load be?
by Newbietube » Thu Jan 12, 2017 2:36 pm
- 3 Replies
- 10719 Views
- Last post by Geek
Tue Mar 28, 2017 3:07 am
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- Did everyone get their ruler from Digikey?
by DeathRex » Thu Feb 16, 2017 3:39 pm
- 1 Replies
- 9216 Views
- Last post by Geek
Sat Feb 18, 2017 3:04 am
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- McIntosh MA 6100
by DeathRex » Fri Apr 29, 2016 11:20 am
- 17 Replies
- 27854 Views
- Last post by Geek
Mon Jan 30, 2017 2:23 pm
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- Running a transformer in reverse.
by Newbietube » Thu Nov 24, 2016 5:40 am
- 4 Replies
- 12308 Views
- Last post by Newbietube
Thu Jan 12, 2017 2:28 pm
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- CCS for small signal pentodes
by DeathRex » Wed Jan 11, 2017 5:50 pm
- 5 Replies
- 12041 Views
- Last post by Geek
Thu Jan 12, 2017 1:01 pm
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- Help understanding some things about amplifier design
by mrtubenewbie » Tue Aug 02, 2016 12:08 pm
- 5 Replies
- 14032 Views
- Last post by Impmon
Fri Dec 16, 2016 11:41 pm
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- Opinion, pls, for tubes Golden Gate
by azazello » Tue Dec 06, 2016 12:15 pm
- 4 Replies
- 11771 Views
- Last post by cdmawolf
Thu Dec 08, 2016 9:06 pm
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- ST-70 Power supply questions
by franciscano » Sun Oct 30, 2016 5:57 am
- 15 Replies
- 26052 Views
- Last post by Quad
Thu Nov 03, 2016 11:11 am
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- Dynaco Dyna PAS PC5 PC6 pcb
by erez1012 » Fri Sep 30, 2016 6:28 am
- 4 Replies
- 12043 Views
- Last post by Gingertube
Tue Oct 04, 2016 11:19 pm
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- Diy tube amp recommandation
by franciscano » Sat Sep 10, 2016 10:39 pm
- 5 Replies
- 12780 Views
- Last post by franciscano
Mon Sep 12, 2016 2:28 am
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- Philco Radio Gallery 1928-1960
by EWBrown » Wed Sep 07, 2016 7:18 pm
- 2 Replies
- 9660 Views
- Last post by EWBrown
Wed Sep 07, 2016 8:32 pm
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- Introducing the 26E6WG - Plinker of the Day
by EWBrown » Mon Aug 15, 2016 1:01 pm
- 4 Replies
- 12376 Views
- Last post by EWBrown
Mon Aug 29, 2016 3:43 pm
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- Tube data for the 9AM10
by rsumperl » Sun Aug 28, 2016 7:31 pm
- 2 Replies
- 10081 Views
- Last post by EWBrown
Sun Aug 28, 2016 8:41 pm
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- Best new 6CA7/EL34?
by joeztech » Sun Aug 21, 2016 2:22 pm
- 2 Replies
- 10267 Views
- Last post by joeztech
Sun Aug 21, 2016 3:41 pm
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- Couple of Russian "big boys"
by EWBrown » Sat Aug 20, 2016 7:50 pm
- 1 Replies
- 9670 Views
- Last post by Geek
Sat Aug 20, 2016 10:04 pm
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- Sylvania SN-1551B mystery triode ?
by EWBrown » Wed Aug 17, 2016 3:56 pm
- 2 Replies
- 10542 Views
- Last post by EWBrown
Thu Aug 18, 2016 3:10 pm
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- Three pairs of transformers and what to do with them
by soundbrigade » Tue Jul 26, 2016 4:35 pm
- 8 Replies
- 14890 Views
- Last post by soundbrigade
Wed Jul 27, 2016 4:36 pm
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- Small SE amp with no pre-amp
by Vernrich » Wed Jun 15, 2016 11:50 pm
- 3 Replies
- 11523 Views
- Last post by soundbrigade
Thu Jun 23, 2016 10:39 am
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- New ideas in an old fashioned AM tuner
by LW1DSE » Mon Apr 25, 2016 7:28 am
- 17 Replies
- 30225 Views
- Last post by LW1DSE
Wed Jun 22, 2016 6:32 am
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- VOX AC15 - DIY Repair assist
by JCB42 » Tue Jun 07, 2016 9:18 am
- 0 Replies
- 11848 Views
- Last post by JCB42
Tue Jun 07, 2016 9:18 am
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- Amplifier Using B Minus instead of B Plus
by joeztech » Sun Jun 05, 2016 3:00 pm
- 2 Replies
- 10033 Views
- Last post by joeztech
Mon Jun 06, 2016 5:32 am
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- Make Your Own Tubes- New Forum
by rmyauck » Sun May 29, 2016 9:25 am
- 0 Replies
- 11398 Views
- Last post by rmyauck
Sun May 29, 2016 9:25 am
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- Independent tube biasing?
by fcervone » Wed May 04, 2016 4:52 pm
- 5 Replies
- 12844 Views
- Last post by dcriner
Sat May 28, 2016 4:46 pm
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- Vacuum Tube Time Machine
by shlafferty » Mon May 02, 2016 2:33 pm
- 3 Replies
- 11048 Views
- Last post by shlafferty
Fri May 06, 2016 7:33 am
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- Mcintosh C24 rebuild ideas
by DeathRex » Wed Feb 10, 2016 3:57 pm
- 15 Replies
- 29434 Views
- Last post by DeathRex
Mon Apr 25, 2016 12:08 pm
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- CBS-Hytron Dice-a-tron
by EWBrown » Mon Apr 18, 2016 7:08 pm
- 6 Replies
- 12880 Views
- Last post by soundbrigade
Sun Apr 24, 2016 6:54 am
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- need tube chart for califone 26V cosmopolitan 2
by flashbk13 » Fri Mar 25, 2016 8:48 pm
- 14 Replies
- 25975 Views
- Last post by flashbk13
Tue Apr 19, 2016 5:34 pm
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- Low gain, low current, low impedance stage
by DeathRex » Mon Jun 15, 2015 6:18 pm
- 3 Replies
- 11649 Views
- Last post by LW1DSE
Mon Apr 18, 2016 10:05 am
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- Headphones and PP-amps
by soundbrigade » Sat Jun 06, 2015 3:32 pm
- 7 Replies
- 15150 Views
- Last post by LW1DSE
Mon Apr 18, 2016 9:49 am
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- Advice on a 6550 pp amp
by jbesound » Sat Mar 26, 2016 3:21 pm
- 4 Replies
- 12043 Views
- Last post by jbesound
Thu Apr 14, 2016 8:51 pm
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- Testing Rectifier Tube
by skidave » Tue Feb 09, 2016 10:56 am
- 4 Replies
- 13007 Views
- Last post by LW1DSE
Thu Apr 14, 2016 1:03 pm
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- The Knifonium, the vacuum tube synthesizer
by EWBrown » Fri Apr 08, 2016 6:33 pm
- 1 Replies
- 9963 Views
- Last post by Geek
Sat Apr 09, 2016 12:26 am
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