The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


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No new posts  Announcement:  dual rectifiers for ST120 & ST70 amps 21tubes4hifi1805View latest post Fri Sep 08, 2023 8:35 am
by Ianedwin
No new posts  Announcement:  Tubes IN STOCK - Tung-Sol, Gold Lion, Electro-Harmonix, Svetlana, Sovtek, JJ 2Dan W212View latest post Thu Sep 07, 2023 9:00 pm
by Dan W
No new posts  Announcement:  blown tubes 0tubes4hifi765View latest post Thu Jun 08, 2023 7:51 pm
by tubes4hifi
No new posts   Coupling Cap Substitutions? 15vtshopdog2493View latest post Thu Aug 17, 2023 8:14 am
by Buck_R0gers
No new posts   ST70 bias is .56 instead of 1.56 6CAEMI388View latest post Thu Aug 17, 2023 8:09 am
by Buck_R0gers
No new posts   Capacitor and sound quality 18Sprags6773View latest post Fri Aug 11, 2023 12:48 am
by pedrocols
No new posts   Power switch wiring.  3Njrob367View latest post Thu Aug 10, 2023 4:32 pm
by tubes4hifi
No new posts   digital bias meters 0tubes4hifi322View latest post Thu Aug 10, 2023 2:14 pm
by tubes4hifi
No new posts   Tubes for VTA ST-120 11Hops1093View latest post Sat Aug 05, 2023 10:44 pm
by Njrob
No new posts   my first st 70 7Scott from west seneca362View latest post Thu Jul 27, 2023 12:16 pm
by peterh
No new posts   Vtast120 and the new fuse kit questions. 3Njrob375View latest post Thu Jul 27, 2023 11:30 am
by tubes4hifi
No new posts   New (Old) Guy 3mwagn_1577View latest post Fri Jul 14, 2023 5:38 pm
by Brap
No new posts   Hammond 1650E 4Junksleep522View latest post Thu Jul 13, 2023 8:09 pm
by Dan W
No new posts   Ph 14 looking manual  1Jim472View latest post Mon Jul 03, 2023 4:59 pm
by Dale Stevens
No new posts   looking for volume and selector knobs for dynaco pas2 1, 234vuejaday1191View latest post Fri Jun 30, 2023 12:44 pm
by vuejaday
No new posts   PAS 3 Shielded Phono Cabling 1moodyj2000543View latest post Thu Jun 29, 2023 7:04 pm
by jwb474
No new posts   SCA 35 trouble 8Junksleep773View latest post Tue Jun 27, 2023 6:53 pm
by tubes4hifi
No new posts   Octal driver board when used for VTA ST-120 1StevieRay572View latest post Tue Jun 27, 2023 6:51 pm
by tubes4hifi
No new posts   I have a pair of Dynaco original Mark IV's. One is dead. The other is playing but..... 2ng8264723370View latest post Mon Jun 26, 2023 8:50 am
by WLT
No new posts   Think I toasted my Power Transformer, how do I test it? 9evangerardo1008View latest post Tue Jun 13, 2023 9:23 am
by Bob Latino
No new posts   blown tubes 1tubes4hifi522View latest post Thu Jun 08, 2023 9:14 pm
by New2Tubez
No new posts   VTA M-125 amp videos 7Bob Latino1123View latest post Thu Jun 08, 2023 4:07 pm
by Dan W
No new posts   PH 14 phone amp hum 4Jim424View latest post Tue Jun 06, 2023 1:36 pm
by Jim
No new posts   Ruby 5U4GC Red Plating  18Tom Pickett1114View latest post Mon May 29, 2023 4:41 pm
by tubes4hifi
No new posts   Preamplifier & Power Amplifier Compatibility 3TN Allen478View latest post Mon May 29, 2023 4:33 pm
by tubes4hifi
No new posts   A Couple Of Front Panel Queries 7jwb474604View latest post Mon May 29, 2023 11:26 am
by jwb474
No new posts   Ph 14 phone amp 2Jim392View latest post Mon May 29, 2023 8:00 am
by Jim
No new posts   Sound stopped working on VTA120 8Pezcore67562View latest post Thu May 25, 2023 4:17 pm
by Pezcore67
No new posts   M-125 : Socket screws 12SixOhms932View latest post Tue May 23, 2023 11:06 am
by Seamus
No new posts   MKIII Bias Not Controllable 8snip73666View latest post Mon May 22, 2023 12:43 pm
by Seamus
No new posts   Poor man's solid state replacement rectifier for Dynaco ST-70, Mark II, Mark III or Mark IV 16Bob Latino12537View latest post Fri May 19, 2023 12:27 pm
by stewdan
No new posts   Dynaco A-25 Mark2 1978 0Mark Korda300View latest post Mon May 15, 2023 4:14 pm
by Mark Korda
No new posts   What about KT-66? 9MarcVBelgium3092View latest post Mon May 15, 2023 8:38 am
by Brap
No new posts   Loud squealing noise from one channel when powering off.  15Kettnet892View latest post Tue May 02, 2023 8:58 pm
by Solder Slinger
No new posts   Sutherland solid state driver board for the Dynaco ST-70 7Bob Latino4452View latest post Thu Apr 27, 2023 3:03 pm
by sbradley02
No new posts   New guy : new amps 7SixOhms663View latest post Sat Apr 22, 2023 1:43 pm
by Bob Latino
No new posts   Time delay board, UF4007 resistor mod, KT88 GL and Tung Sol/Sovtek KT120 questions 945scratches853View latest post Sat Apr 22, 2023 10:30 am
by Seamus
No new posts   ST70 blows 5 amp fuse 7vincentdsnt721View latest post Fri Apr 21, 2023 8:53 pm
by Big Harry
No new posts   mk 3 tubes 9JohnS752View latest post Tue Apr 04, 2023 6:20 pm
by JohnS
No new posts   Power Tower 9CletusB860View latest post Sat Apr 01, 2023 11:35 am
by CletusB
No new posts   ST70 No Bias 14Isstatu11140View latest post Thu Mar 30, 2023 5:36 pm
by fredeb
No new posts   Working on dynaco pots 7carcy815View latest post Thu Mar 30, 2023 12:28 pm
by carcy
No new posts   What are three three holes in the plates of a KT88 Tetrode for? 3alexbramford617View latest post Tue Mar 28, 2023 10:55 am
by Seamus
No new posts   ST70 HUM on New Build Single Channel 4moodyj2000412View latest post Mon Mar 27, 2023 5:24 pm
by Chad Spackman
No new posts   Newbie PAS2 help 3zapped1376View latest post Fri Mar 24, 2023 2:25 am
by peterh
No new posts   Dynaco ST70 speaker pops on power down 9pdxwaker542View latest post Tue Mar 21, 2023 9:53 pm
by pdxwaker
No new posts   Dynaco Mark II to III conversion - tubes4hifi + SDS Labs 3tacuba407View latest post Mon Mar 20, 2023 1:44 pm
by peterh
No new posts   ST70 - Tube heater center tap capacitor 1Don_U263View latest post Mon Mar 20, 2023 10:47 am
by Rec
No new posts   Dual PAM-1 & DSC-1 Front Panel 2jwb474202View latest post Sat Mar 18, 2023 3:04 pm
by jwb474
No new posts   VT-120 Tubes won't bias 8subman999View latest post Fri Mar 17, 2023 1:10 pm
by Tubes4ever
No new posts   start up mk 3 0JohnS239View latest post Wed Mar 15, 2023 9:33 pm
by JohnS
No new posts   can't get rid of hum st 70 + PAS 3x or st70 + PAS-NGT 15DrBrown613View latest post Wed Mar 15, 2023 7:19 pm
by DrBrown
No new posts   Ok to balance 70/30 input? 0Njrob163View latest post Wed Mar 15, 2023 5:27 pm
by Njrob
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