Valves

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Valve amplifier service

Last post by simon « Thu Oct 05, 2023 8:23 pm
Replies: 127
by bostod » Sat Apr 01, 2023 7:45 am
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127 Replies

24254 Views

Last post by simon
Thu Oct 05, 2023 8:23 pm
PP3521 idht

Last post by ACPEN « Sat Sep 23, 2023 5:50 pm
Replies: 22
by Paul Barker » Fri Mar 17, 2023 6:29 pm
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22 Replies

5164 Views

Last post by ACPEN
Sat Sep 23, 2023 5:50 pm
Latest 300b valves

Last post by Rexton « Fri Sep 08, 2023 8:18 pm
Replies: 19
by Rexton » Fri Aug 25, 2023 7:16 pm
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19 Replies

7105 Views

Last post by Rexton
Fri Sep 08, 2023 8:18 pm
Four-wire capacitors

Last post by Paul Barker « Mon Aug 14, 2023 6:32 pm
Replies: 1
by Morgan Jones » Mon Aug 14, 2023 5:19 pm

1 Replies

1012 Views

Last post by Paul Barker
Mon Aug 14, 2023 6:32 pm
Is this a Valve of some kind?

Last post by Mike H « Wed Jun 28, 2023 6:25 pm
Replies: 12
by Dave the bass » Mon Oct 04, 2021 9:29 pm

12 Replies

6853 Views

Last post by Mike H
Wed Jun 28, 2023 6:25 pm
Tube geekery to pass the time.

Last post by Boiss « Tue Jun 13, 2023 11:00 am
Replies: 28
by Cressy Snr » Wed Dec 29, 2021 12:56 pm
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28 Replies

10786 Views

Last post by Boiss
Tue Jun 13, 2023 11:00 am
Ed

Last post by Nick « Wed Mar 08, 2023 10:26 am
Replies: 22
by Paul Barker » Sun Mar 05, 2023 6:31 pm
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22 Replies

8075 Views

Last post by Nick
Wed Mar 08, 2023 10:26 am
What are the oldest affordable valves you can still buy?

Last post by steve s « Tue Feb 07, 2023 4:16 pm
Replies: 13
by Thermionic Idler » Mon Feb 06, 2023 9:59 am

13 Replies

5700 Views

Last post by steve s
Tue Feb 07, 2023 4:16 pm
Any cure for a noisy valve?

Last post by Max N « Sun Jan 22, 2023 4:59 pm
Replies: 9
by Max N » Sat Jan 14, 2023 1:26 pm

9 Replies

4622 Views

Last post by Max N
Sun Jan 22, 2023 4:59 pm
VT-127A

Last post by IslandPink « Fri Jul 01, 2022 10:34 pm

by IslandPink » Fri Jul 01, 2022 10:34 pm

0 Replies

7896 Views

Last post by IslandPink
Fri Jul 01, 2022 10:34 pm
6V6 alternatives

Last post by Paul Barker « Wed Apr 13, 2022 5:04 am
Replies: 2
by Paul Barker » Tue Apr 12, 2022 3:20 pm

2 Replies

3798 Views

Last post by Paul Barker
Wed Apr 13, 2022 5:04 am
Another cheap 300B !

Last post by IslandPink « Mon Mar 07, 2022 6:58 pm
Replies: 4
by IslandPink » Mon Mar 15, 2021 10:42 pm

4 Replies

5948 Views

Last post by IslandPink
Mon Mar 07, 2022 6:58 pm
EL82

Last post by Paul Barker « Mon Jan 24, 2022 10:57 am
Replies: 1
by Paul Barker » Mon Jan 24, 2022 10:41 am

1 Replies

3330 Views

Last post by Paul Barker
Mon Jan 24, 2022 10:57 am
1619

Last post by Paul Barker « Sun Dec 19, 2021 10:31 am
Replies: 4
by Paul Barker » Thu Dec 16, 2021 6:31 pm

4 Replies

4003 Views

Last post by Paul Barker
Sun Dec 19, 2021 10:31 am
D3a Triode Square Wave shows HF boost

Last post by Mike H « Wed Jul 28, 2021 9:29 pm
Replies: 17
by RhythMick » Fri Jul 23, 2021 9:19 pm
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17 Replies

10117 Views

Last post by Mike H
Wed Jul 28, 2021 9:29 pm
Class A2 - heater hum

Last post by Paul Barker « Thu Jul 22, 2021 6:34 pm
Replies: 7
by ACPEN » Thu Jul 22, 2021 10:08 am

7 Replies

4400 Views

Last post by Paul Barker
Thu Jul 22, 2021 6:34 pm
801A VT62 Power and Distortion

Last post by RhythMick « Thu Jul 15, 2021 9:16 pm
Replies: 40
by Paul Barker » Fri Apr 06, 2012 8:11 am
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40 Replies

25810 Views

Last post by RhythMick
Thu Jul 15, 2021 9:16 pm
Marconi DA100 Valves

Last post by Nick « Wed Jun 30, 2021 4:41 pm
Replies: 9
by Cal » Tue Jun 29, 2021 8:16 am

9 Replies

5726 Views

Last post by Nick
Wed Jun 30, 2021 4:41 pm
Another insane valve for phonos

Last post by Nick « Sun May 30, 2021 11:26 pm
Replies: 12
by IslandPink » Wed Jul 08, 2020 8:21 pm

12 Replies

9785 Views

Last post by Nick
Sun May 30, 2021 11:26 pm
SRPP stage useing a 5670

Last post by ruffrecords « Thu May 27, 2021 9:53 pm
Replies: 19
by acorn » Sat Oct 06, 2018 3:38 pm
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19 Replies

14350 Views

Last post by ruffrecords
Thu May 27, 2021 9:53 pm
Seraphim Phonostage

Last post by ruffrecords « Wed May 26, 2021 11:47 am
Replies: 7
by JohnG » Mon Feb 24, 2020 5:58 am

7 Replies

9013 Views

Last post by ruffrecords
Wed May 26, 2021 11:47 am
211

Last post by IslandPink « Tue May 11, 2021 2:59 pm
Replies: 12
by ed » Sun May 02, 2021 9:38 am

12 Replies

7295 Views

Last post by IslandPink
Tue May 11, 2021 2:59 pm
WAD 300b hum and buzz

Last post by Nick « Sun Nov 15, 2020 3:27 pm
Replies: 3
by adrian » Sat Nov 02, 2019 3:17 pm

3 Replies

8110 Views

Last post by Nick
Sun Nov 15, 2020 3:27 pm
john wood kt88 amp

Last post by jayman67 « Sun Sep 06, 2020 6:01 pm

by jayman67 » Sun Sep 06, 2020 6:01 pm

0 Replies

5595 Views

Last post by jayman67
Sun Sep 06, 2020 6:01 pm
New Transcendent pre-amp

Last post by Nick « Sat Aug 01, 2020 10:40 am
Replies: 2
by Ray P » Sat Aug 01, 2020 7:59 am

2 Replies

5051 Views

Last post by Nick
Sat Aug 01, 2020 10:40 am
Interesting Meters & 300B amp

Last post by RhythMick « Sun Jul 26, 2020 2:11 pm
Replies: 1
by Ray P » Sat Jul 25, 2020 10:42 pm

1 Replies

4117 Views

Last post by RhythMick
Sun Jul 26, 2020 2:11 pm
Saw these and thought of you guys...

Last post by Ali Tait « Fri Jul 17, 2020 5:50 pm
Replies: 22
by Ray P » Thu Jul 16, 2020 7:07 pm
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22 Replies

11956 Views

Last post by Ali Tait
Fri Jul 17, 2020 5:50 pm
Help needed on kt88 WAD amplifier

Last post by Nick « Thu Jul 02, 2020 10:20 pm
Replies: 3
by bostod » Thu Jul 02, 2020 10:32 am

3 Replies

4818 Views

Last post by Nick
Thu Jul 02, 2020 10:20 pm
6AK5 and 6AK6 anyone aware of circuits for us with?

Last post by Paul Barker « Sat Jun 27, 2020 9:48 pm
Replies: 2
by Paul Barker » Sat Jun 27, 2020 6:37 pm

2 Replies

4483 Views

Last post by Paul Barker
Sat Jun 27, 2020 9:48 pm
Cheap integrated on ebay, with MM stage. Opinions?

Last post by adrian « Thu Jun 11, 2020 12:26 pm
Replies: 7
by adrian » Tue Jun 09, 2020 2:14 pm

7 Replies

8401 Views

Last post by adrian
Thu Jun 11, 2020 12:26 pm
Tung Sol

Last post by Paul Barker « Mon Jun 08, 2020 9:21 pm
Replies: 6
by Baggy Trousers » Mon Jun 08, 2020 9:53 am

6 Replies

6151 Views

Last post by Paul Barker
Mon Jun 08, 2020 9:21 pm
CV315/4304CB/VT62 - RAF Transmitter

Last post by pre65 « Wed Apr 08, 2020 1:08 pm
Replies: 25
by Cressy Snr » Sun Mar 07, 2010 4:35 pm
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25 Replies

25308 Views

Last post by pre65
Wed Apr 08, 2020 1:08 pm
Beard P101 amplifier.

Last post by Mike H « Thu Feb 06, 2020 8:39 pm
Replies: 14
by Chopsaw » Sun Feb 02, 2020 1:24 pm

14 Replies

13085 Views

Last post by Mike H
Thu Feb 06, 2020 8:39 pm
uTracer v6

Last post by jack « Sat Jan 04, 2020 4:59 pm

by jack » Sat Jan 04, 2020 4:59 pm

0 Replies

6394 Views

Last post by jack
Sat Jan 04, 2020 4:59 pm
Valve Tester

Last post by little eddy « Tue Nov 12, 2019 2:44 pm
Replies: 2
by little eddy » Mon Nov 11, 2019 4:12 pm

2 Replies

6367 Views

Last post by little eddy
Tue Nov 12, 2019 2:44 pm
TAD KT88-STR

Last post by Qwin « Wed Nov 06, 2019 4:54 pm

by Qwin » Wed Nov 06, 2019 4:54 pm

0 Replies

6239 Views

Last post by Qwin
Wed Nov 06, 2019 4:54 pm
Decoupling...

Last post by Nick « Sat Oct 26, 2019 10:45 am
Replies: 53
by steve s » Sat Nov 23, 2013 10:15 am
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53 Replies

47137 Views

Last post by Nick
Sat Oct 26, 2019 10:45 am
CV4003 / ECC82 types...

Last post by Mike H « Wed Oct 23, 2019 4:46 pm
Replies: 6
by jack » Mon Sep 30, 2019 10:05 pm

6 Replies

9299 Views

Last post by Mike H
Wed Oct 23, 2019 4:46 pm
uTracer 400V upgrade kit available...

Last post by Paul Barker « Mon Sep 30, 2019 10:31 pm
Replies: 30
by jack » Sat Apr 11, 2015 6:33 pm
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30 Replies

29318 Views

Last post by Paul Barker
Mon Sep 30, 2019 10:31 pm
Recommendations needed for high quality valve bases

Last post by Mike H « Wed Sep 11, 2019 8:47 pm
Replies: 3
by RhythMick » Tue Aug 20, 2019 3:11 pm

3 Replies

7109 Views

Last post by Mike H
Wed Sep 11, 2019 8:47 pm
New toys to play with

Last post by pre65 « Wed Jun 05, 2019 6:52 pm
Replies: 11
by mainscablesrus » Mon Jun 03, 2019 9:21 pm

11 Replies

12612 Views

Last post by pre65
Wed Jun 05, 2019 6:52 pm
OH YES

Last post by IslandPink « Sat May 04, 2019 12:08 pm
Replies: 14
by mainscablesrus » Mon Apr 29, 2019 12:18 am

14 Replies

13861 Views

Last post by IslandPink
Sat May 04, 2019 12:08 pm
Help hunting down an odd fault

Last post by chris661 « Thu May 02, 2019 6:25 pm
Replies: 1
by RhythMick » Sat Apr 06, 2019 6:29 pm

1 Replies

5460 Views

Last post by chris661
Thu May 02, 2019 6:25 pm
Drool... !

Last post by Paul Barker « Thu Apr 25, 2019 2:09 pm
Replies: 4
by IslandPink » Tue Apr 23, 2019 8:17 pm

4 Replies

7165 Views

Last post by Paul Barker
Thu Apr 25, 2019 2:09 pm
GZ37 horizontal?

Last post by Mike H « Sat Mar 02, 2019 3:39 pm
Replies: 13
by Max N » Tue Feb 26, 2019 9:46 pm

13 Replies

14017 Views

Last post by Mike H
Sat Mar 02, 2019 3:39 pm
For high-power enthusiasts

Last post by chris661 « Wed Feb 20, 2019 7:17 pm
Replies: 6
by IslandPink » Mon Feb 18, 2019 6:14 pm

6 Replies

8782 Views

Last post by chris661
Wed Feb 20, 2019 7:17 pm
Finished and working - 12 valve all DHT PP 26-71a-45

Last post by steve s « Sun Feb 03, 2019 12:11 am
Replies: 286
by RhythMick » Thu Aug 02, 2018 2:05 pm
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286 Replies

133768 Views

Last post by steve s
Sun Feb 03, 2019 12:11 am
NOS Siemens and Halske ECC801S

Last post by IslandPink « Sat Nov 24, 2018 11:55 am
Replies: 4
by JohnG » Sun Nov 11, 2018 10:58 am

4 Replies

8162 Views

Last post by IslandPink
Sat Nov 24, 2018 11:55 am
SRA/VTA adjustment and tube distortion

Last post by Nick « Mon Oct 29, 2018 5:29 pm
Replies: 7
by Wolfgang » Sun Oct 28, 2018 4:13 pm

7 Replies

9522 Views

Last post by Nick
Mon Oct 29, 2018 5:29 pm
The Pinnacle

Last post by Ali Tait « Fri Oct 05, 2018 11:09 am
Replies: 8
by Ray P » Wed Oct 03, 2018 11:04 pm

8 Replies

10044 Views

Last post by Ali Tait
Fri Oct 05, 2018 11:09 am

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