for Dynaco Mark II/III/IV and DIY PP monoblocks
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- Why are all of Shannon Parks boards discontinued?
by jukingeo » Sat Mar 13, 2021 2:47 pm
- 2 Replies
- 50534 Views
- Last post by jukingeo
Tue Mar 23, 2021 9:28 pm
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- Correct bias for Mark IV with EL34
by tubularfluxus » Thu Feb 25, 2021 6:44 pm
- 0 Replies
- 4493 Views
- Last post by tubularfluxus
Thu Feb 25, 2021 6:44 pm
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- Replacing MkIII can-cap with SDS cap board with Poseidon
by wungun » Sun Jan 14, 2018 9:56 am
- 5 Replies
- 25465 Views
- Last post by wungun
Sat Mar 31, 2018 6:25 pm
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- Need a bit of assistance wiring up Poseidon in MKIV
by highflyin9 » Thu Aug 10, 2017 7:05 pm
- 0 Replies
- 8383 Views
- Last post by highflyin9
Thu Aug 10, 2017 7:05 pm
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- using a poseidon circuit to drive PP 300B's
by battradio » Thu Jun 08, 2017 2:50 pm
- 0 Replies
- 7812 Views
- Last post by battradio
Thu Jun 08, 2017 2:50 pm
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- 250V film bypass caps for power supply
by highflyin9 » Tue Feb 28, 2017 8:16 pm
- 1 Replies
- 6019 Views
- Last post by Geek
Tue Feb 28, 2017 8:27 pm
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- Poseidon trouble in River City
by logos47 » Sat Jan 07, 2017 9:58 pm
- 6 Replies
- 9429 Views
- Last post by logos47
Mon Jan 09, 2017 8:08 pm
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- Poseidon board in M125 mono amps
by Too much stuff! » Tue Jun 21, 2016 7:28 am
- 0 Replies
- 10724 Views
- Last post by Too much stuff!
Tue Jun 21, 2016 7:28 am
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- Use both triode sections of the 12AX7!
by michael_nipomo » Wed Jul 18, 2007 2:52 pm
- 9 Replies
- 18743 Views
- Last post by tubularfluxus
Sat Jun 18, 2016 12:51 pm
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- bias wiring MKIII
by vintage » Thu Apr 28, 2016 9:48 am
- 10 Replies
- 11286 Views
- Last post by vintage
Mon May 09, 2016 1:15 pm
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- Using 12ax7 on Stereo-70, Mark III and Mark IV
by tubularfluxus » Tue Apr 26, 2016 1:35 pm
- 2 Replies
- 6636 Views
- Last post by tubularfluxus
Wed Apr 27, 2016 11:02 pm
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- Screen grid resistors on MKIII
by jbesound » Tue Mar 29, 2016 12:25 am
- 1 Replies
- 6162 Views
- Last post by Geek
Tue Mar 29, 2016 1:26 pm
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- Mk-IV 1K resistor before the EL-34 pin5.
by Stevedel » Mon Oct 12, 2015 1:16 pm
- 3 Replies
- 7249 Views
- Last post by Stevedel
Wed Oct 14, 2015 7:30 am
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- Cloth leads
by Blair » Sun Jul 19, 2015 4:58 pm
- 7 Replies
- 10732 Views
- Last post by TerrySmith
Thu Aug 13, 2015 8:12 am
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- 6.8k cap resistor blowing
by wungun » Thu Jun 25, 2015 3:58 pm
- 33 Replies
- 34151 Views
- Last post by 20to20
Tue Jun 30, 2015 3:47 pm
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- 6SL7/6SN7
by bean_counter » Fri Apr 17, 2015 9:32 am
- 3 Replies
- 8252 Views
- Last post by Shannon Parks
Wed Jun 17, 2015 4:33 am
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- Have anyone tested Russian 6N2P?
by spiderman62 » Tue Mar 31, 2015 6:32 am
- 4 Replies
- 8262 Views
- Last post by EWBrown
Thu Apr 02, 2015 6:48 am
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- Tubezone vs standard diytube version for Mark 3's
by lord_glum » Tue Mar 03, 2015 5:45 pm
- 0 Replies
- 7156 Views
- Last post by lord_glum
Tue Mar 03, 2015 5:45 pm
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- Loud hum on Mark 3's
by rpochi » Mon Dec 22, 2014 3:07 am
- 5 Replies
- 8702 Views
- Last post by rpochi
Sat Jan 31, 2015 4:45 pm
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- Mark III Sound versus Stereo-70
by joeztech » Fri Jan 16, 2015 9:44 am
- 0 Replies
- 7069 Views
- Last post by joeztech
Fri Jan 16, 2015 9:44 am
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- MKIII noise issues
by justinsweber » Thu Aug 28, 2014 12:27 am
- 5 Replies
- 9849 Views
- Last post by Shannon Parks
Mon Sep 01, 2014 2:00 pm
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- Poseidon Board Upgrade
by camaroguy » Thu Aug 21, 2014 4:23 am
- 1 Replies
- 7222 Views
- Last post by Shannon Parks
Thu Aug 21, 2014 5:07 am
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- HAVE ORDERED NEW POESIDON BOARDS
by coca » Fri Apr 18, 2014 9:20 pm
- 1 Replies
- 7288 Views
- Last post by Geek
Fri Apr 18, 2014 10:54 pm
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- Mark III Poseidon Advice.
by Harpy » Sun Apr 13, 2014 2:50 pm
- 5 Replies
- 9155 Views
- Last post by pmarcin
Fri Apr 18, 2014 6:03 am
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- Poseidon V VTA
by MontanaWay » Sat Mar 29, 2014 8:53 am
- 5 Replies
- 9293 Views
- Last post by pmarcin
Wed Apr 02, 2014 10:22 am
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- Mark III Poseidon Boards with Classic Valve PS Boards
by Too much stuff! » Fri Dec 27, 2013 1:07 pm
- 4 Replies
- 10234 Views
- Last post by Too much stuff!
Sun Jan 26, 2014 5:38 pm
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- All 6CG7 front end schematic?
by Blair » Sun Dec 01, 2013 10:15 am
- 2 Replies
- 7911 Views
- Last post by Shannon Parks
Mon Dec 02, 2013 6:03 am
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- Mark III Poseidon Boards and Russian PIO caps
by kygeezer » Wed Jul 24, 2013 6:48 am
- 2 Replies
- 7991 Views
- Last post by EWBrown
Thu Jul 25, 2013 6:42 pm
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- Mark III noise question
by Soundguy2856 » Sat Jun 29, 2013 7:24 pm
- 6 Replies
- 10141 Views
- Last post by Soundguy2856
Wed Jul 24, 2013 1:07 pm
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- Mark IV big can capacitor replacement
by pgeejr » Mon Jul 01, 2013 6:28 pm
- 4 Replies
- 8703 Views
- Last post by pgeejr
Sun Jul 07, 2013 7:45 pm
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- Help with Mark III rebuilds
by kygeezer » Sat Jun 15, 2013 11:06 am
- 22 Replies
- 25155 Views
- Last post by kygeezer
Sat Jun 29, 2013 3:39 pm
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- Zero Semiconductor MKIII Upgrade
by kt88pppamp » Tue Jun 04, 2013 10:19 pm
- 3 Replies
- 8417 Views
- Last post by kt88pppamp
Wed Jun 26, 2013 12:40 am
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- Just got a Dynaco MK IV and have some questions
by pgeejr » Fri Jun 14, 2013 6:50 pm
- 4 Replies
- 8614 Views
- Last post by kt88pppamp
Sat Jun 15, 2013 9:27 pm
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- Where to now?
by Harpy » Tue Jun 04, 2013 11:23 pm
- 2 Replies
- 7321 Views
- Last post by Harpy
Wed Jun 05, 2013 8:42 pm
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- Going Balanced?
by kt88pppamp » Sat Jun 18, 2011 9:03 pm
- 11 Replies
- 17270 Views
- Last post by kt88pppamp
Wed Mar 13, 2013 9:54 pm
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- What to do with a pair MKIII'S
by battradio » Sun Mar 03, 2013 4:17 pm
- 4 Replies
- 8785 Views
- Last post by TerrySmith
Wed Mar 06, 2013 8:50 am
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- Outer foil: Mark III vs. Stereo 70
by petercapo » Wed Dec 19, 2012 11:13 pm
- 9 Replies
- 13900 Views
- Last post by Shannon Parks
Sun Dec 23, 2012 12:54 pm
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- Mounting and tube hole locations for the Poseidon board
by ashok » Wed Oct 31, 2012 9:48 am
- 3 Replies
- 8942 Views
- Last post by ashok
Thu Nov 01, 2012 6:29 am
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- And another new set of Poseidons on the bench!
by Wmacky » Thu Aug 02, 2012 8:18 am
- 5 Replies
- 10527 Views
- Last post by Shannon Parks
Sat Aug 11, 2012 3:39 pm
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- More on Poseidon V1 filament
by Wiesiek Lipowski » Wed Jul 04, 2012 3:52 am
- 2 Replies
- 7927 Views
- Last post by EWBrown
Wed Jul 04, 2012 11:30 am
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- Poseidon filament new idea
by Wiesiek Lipowski » Thu May 31, 2012 1:19 am
- 2 Replies
- 8552 Views
- Last post by Wiesiek Lipowski
Thu May 31, 2012 12:38 pm
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- 12ua7 conversion to 6cg7 buffer?
by logos47 » Wed May 16, 2012 10:43 am
- 0 Replies
- 7354 Views
- Last post by logos47
Wed May 16, 2012 10:43 am
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- Paging Shannon Parks
by logos47 » Fri Apr 27, 2012 10:41 am
- 4 Replies
- 8850 Views
- Last post by logos47
Sun Apr 29, 2012 12:14 pm
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- Just finished 100W Poseidon. First tube build.
by maynard999 » Fri Mar 30, 2012 4:43 pm
- 3 Replies
- 9554 Views
- Last post by maynard999
Sat Apr 14, 2012 1:07 pm
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- You ALL Need To Try KT77's - (NO---I Am NOT a Salesman)
by pferrari » Mon Mar 20, 2006 1:59 pm
- 17 Replies
- 42983 Views
- Last post by EWBrown
Sun Apr 08, 2012 9:46 pm
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- Troubleshooting a set of Triode mkIIIs
by highflyin9 » Mon Mar 19, 2012 5:19 pm
- 2 Replies
- 8156 Views
- Last post by highflyin9
Tue Mar 20, 2012 5:19 pm
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- AC Heater (Filament) Supply
by ChrisK » Mon Jul 06, 2009 8:39 pm
- 7 Replies
- 15811 Views
- Last post by battradio
Sun Mar 18, 2012 12:12 am
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- Poseidon/MarkIII startup problems
by phatbob808 » Sat Mar 10, 2012 11:31 am
- 10 Replies
- 14519 Views
- Last post by phatbob808
Wed Mar 14, 2012 10:19 am
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- Tweaks to the Posidion Circuit
by kt88pppamp » Tue Jun 21, 2011 7:34 am
- 12 Replies
- 17820 Views
- Last post by Carlp
Sun Feb 19, 2012 7:37 am
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- Just finished my Poseidons rev2
by K4ECA » Tue Jan 03, 2012 7:44 pm
- 11 Replies
- 16714 Views
- Last post by SteveH
Mon Feb 06, 2012 9:05 pm
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