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  1. 13E1 SE design
  2. Booster Amp for low powered SET
  3. Soft starting the rectifier
  4. Tube preamp components help
  5. My own version of the EAR 834P Clone
  6. Eico HF86 modifications
  7. Heaters and centre tap
  8. DHT's, fixed bias, sharred filament supply
  9. Do New JJ GZ34's have less B+ Drop?
  10. Grounded, Floating, or Thermistor-To-Case for Center Tap
  11. Hi, looking for some info on tube amplifier design basics
  12. Nifty little (cheap ) transformer for bias supply
  13. Problems with my ARC VT 130SE
  14. Telefunken V69B - Tube Amp
  15. HV Regulator
  16. EL95 mini SE
  17. NOS vs. Chinese Plate Caps
  18. TL783 regulated B+ 250V PSU schematic
  19. 6922 tube buffer
  20. 300B grid resistance
  21. 6AU6 Aikido in Triode mode?
  22. brown crud?
  23. Steve Bench's tube crossover
  24. Wierd striation on 6L6GC plate
  25. LT1085-based regulated 6.3v heater supply
  26. Are these tubes cooked?
  27. New Build Power Up Advice
  28. Choosing the right mullard design to match the Foreplay III and Ariels
  29. Dumb question on Coupling cap ratings...
  30. European Triode Festival 2008 - couple of seats left
  31. Building PRETOR toroid preamp
  32. ACT2 - ConradJohnson by 818design
  33. PS questions?
  34. Frank's Tube Database Down?
  35. Anybody try Euro DHTs like RE134, RE304 etc??
  36. Need help...again :)
  37. idea for a simple bias servo for AB PP
  38. GU-32/GI-30 tube PP amp
  39. Switch-mode PSU for tube heaters?
  40. Hammond Primary Lead color is wrong?
  41. A newbie need helps on the very 1st tube PreAmp
  42. why does 12u7 need certain amount of gain to stop hum 120???
  43. EL34 Pushpull imbalance
  44. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  45. Rozenblit Grounded Grid Cascode Pho Preamp Project
  46. Driving the kt88/6550 in set mode
  47. 6550a question for engineer?
  48. Yl1260
  49. Parts layout diagram for SE amp
  50. Da 42 Triode
  51. Bogen CHB100 Power Supply Question
  52. Testing of russian tubes on B&K 747B
  53. VR150 use
  54. First Valve DIY Project
  55. I'm having grid1 current in EL34
  56. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  57. SEPTOR AT-amp (Anti-Triode) being built
  58. Sophia Electric el34 mods/upgrades
  59. Looking to build....
  60. Bias resistor for source follower driver
  61. PL 519 electrical characteristics
  62. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  63. My 6AS7G Fuse Link Checker
  64. Anyone ever had issues with One Electron?
  65. 35% off sale at RadioDaze
  66. phase splitter with Tr ?
  67. Chasing my Simple SE problem...
  68. Zenith stereo, EL84 SE. What to do...
  69. Free TVA-1 rev.3 schematic
  70. Bat Vk-60
  71. Trouble with amp 6V6
  72. 5-125 UL curves anyone?
  73. Mod it or scrap it?
  74. Bogen M330
  75. 1st Tube Amp - What to build?
  76. 6J5 weird phase inverter
  77. swinging CCS PP output stage
  78. Varying 2 tube amp characteristics: SE treble and richness
  79. Jadis Defy 7 Schematic
  80. microphonic sub-miniature tubes?
  81. Transformer distortion (THD)
  82. Options for replacing EF86? E180F?
  83. changing an integrated tube amp to a power amp
  84. Nice tube test supply
  85. Looking for 300B 2.5V heater vendor
  86. Cap to bypass bias battery
  87. 2A3 SE parafeed with PP-transformer
  88. Preamp Voltages
  89. TVA-1 "Export" circuit/schematic?
  90. 12ax7 series is this correct??
  91. Yet Another Phono Stage Suggestions Thread
  92. 15% off sale at Soniccraft
  93. Sizing Coupling Capacitors
  94. budget xformer for 829B pentode mode PP (class AB) ?
  95. preamp layout suggestions please
  96. Capacitors and hype!
  97. Transofrmer secondaries
  98. please help 407a
  99. OPT Grounding / Crosstalk
  100. SE With shared Rk in output
  101. Unsolved problem EL34/12AT7/5AR4
  102. Radford STA25 service UK
  103. My tube DIY Web page, translate into English
  104. suggestion about AIKIDO PRE
  105. jackson tube tester 648s manuals
  106. Hashimoto A-105 - 6S4A
  107. Looking For Counterpoint SA2000 Schematic
  108. Where do you put the standby switch
  109. Simple SE Schematic
  110. Operating point for 6GK5
  111. Audio Research St-70-c3
  112. Help identifying tube amp
  113. Ed8000
  114. power suply for Pre & Phono Use tube 6BM8
  115. ESLDD with "anti-triode"
  116. Schematics border patrol psu
  117. Tubelab PCBs for an 845 - a good idea?
  118. Bias supply idea
  119. dynaco st 70 c3
  120. KT88 and the 6550
  121. GM70/GM70 parafeed SET?
  122. Genalex repro KT88s
  123. Grid - Screen Alignment (X-Rays)
  124. tube matching
  125. DC heaters for 5687 in Aikido?
  126. Connection Jensen 4-pole
  127. Measuring Output Power
  128. Modelling stereo PSU in PSUD ...
  129. Speaker matching transformer.
  130. Sowter's Radford transformer
  131. Cathode bias 6LU8 UL/Triode
  132. Cathode bias 6LU8 UL/Triode
  133. Sourcing ASC 100uf X386S capacitor
  134. Looking for a linear triode for lowish B+ CF (6N6P?)
  135. need spice model 5814a
  136. 420T or 10E/33B ?????????
  137. Decca DMI-73 and EL-84 weirdness
  138. Pentode guys: important to decouple g2 supply between stages?
  139. Ccs
  140. The Friday Chuckle
  141. Need help deciding what to build
  142. Why does red plate spell early death?
  143. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  144. fisher 400 tweaking issues
  145. GM70 an 813 strapped in SE-UL - circuits?
  146. need help on transformer secondaries connection
  147. Partridge audio output transformer value
  148. Low mu Preamp Triodes as Power Output Tubes
  149. 300B Transformer temperature
  150. Standby Switch Problems
  151. Worth repairing?
  152. Measuring current distortion
  153. GM70 sockets?
  154. high AC mains problem
  155. 250 V PSU help
  156. EL34 UL Curves
  157. datasheet for ge 5star and rca command 5814a?
  158. PS choke voltage/current quetsion
  159. push pull power amp design question (a lot of actually :) )
  160. Knight Amplifier Repair Question
  161. Grant G100AS circuit diagram?
  162. Hashimoto A-105 - summary so far
  163. Related Audio Worlds largest
  164. Why do valves go microphonic?
  165. Allen Wright Superreg manual
  166. Need help on resistor values for 5687 aikido kit
  167. Pioneer SM83 PP amps
  168. Techtube valves/tubes
  169. Datasheet for Russian 6p3s-e
  170. Continually Blowing Fuses
  171. I am done with AES -- a short rant.
  172. CineMag CMMI-15/15B
  173. In market for a Capacitor meter - for a tube project!
  174. What amp(s) would you buy under $1500
  175. Etf 2008
  176. All FET Aikido
  177. what 12au7 have different tone ??vintage and modern
  178. Can 3.5W 2A3 amp drive proAc 1SC?
  179. British seven pin sockets
  180. Pentodes, triode mode and grid screen dissipation 101
  181. Yakov Aronov amps
  182. Suitable tube pre-amp for Phase Linear 400?
  183. Goldpoint value?
  184. TubelabSE 300B power transformer ?
  185. 316A socket
  186. Hashimoto A105 - some results (ECC99)
  187. Some uses for old transformers
  188. Power Supply Question
  189. PY82 as rectifier
  190. Jackson 637 Tube tester Info needed
  191. pro-ject tube box
  192. Some dumb Questions on Heater CCS supply
  193. Aikido loses power?
  194. Quicksilver 8417/12FQ7 mods
  195. Calculations for an AIKIDO
  196. Music Angel Empty shells
  197. Need help troubleshooting preamp trouble
  198. Compactrons on the brain!
  199. XSE vs. GSXE Edcors
  200. output transformer
  201. How to simulate OPT in LTspice?
  202. 311-b
  203. PSU Design help !!!
  204. BDT Preamp build
  205. Russian tubes / capacitors purchasing
  206. Bored with Leak ST20 - ideas?
  207. KT-88 Music Angel problems with sound level
  208. Fusion Hybrid 300B
  209. I'm new here..... :(
  210. DIY/Buy/Kit
  211. Ralph from Atma-sphere will be giving a talk 09/16
  212. Modified USB DAC board, DDDAC with triode buffer
  213. LS50/GU50 Both Grid Drive
  214. Aikido filament question
  215. 6l6 Se.
  216. Feedback requested on 7591 PP design
  217. Blackburn Mullard/Philips video
  218. DIY sheilded B+ cable
  219. Experimenters Tube Sockets
  220. Used freebies precipitate questions
  221. Mains toroid as IT with DC balance?
  222. Tubes for Viva Solista 845 SET amp
  223. SE transformer for PP duty?
  224. Warning: new SS relay question / No flame I
  225. Tube Haunts Thread?
  226. Problem with Maida regulator
  227. 2 stage SE IT coupled amps..
  228. BUF420M Current Sink
  229. Direct from the mains?
  230. PSU capacitors: 30uF film ok instead of 100uF electrolytic?
  231. Annealed silicon core opt`s
  232. Designing a "cheap" highish-power PP amp...
  233. Improvements for the Mikael Abdellah KT88???
  234. DC supply on driver tube hums..
  235. Sun Audio SV-2A3
  236. Mullard Blackburn Tube Factory Tour Video
  237. SE amp: Please suggest a better operating point
  238. Paralleling Outputs or Bi-amp
  239. triple triode common cathode - only want to use 2 triodes
  240. Luxman 3045 Mono Block Tube Amp
  241. Eye tube for balancing multi amp system
  242. 12ax7 preamp.
  243. External PSU for Quad 22 pre-amplifier
  244. Keep Blowing Fuses
  245. learning tube rectified psu
  246. Series of Diode on HT Plate
  247. Quad II power amps......power output transformers!!!
  248. Mullard (factory) making tubes again
  249. CFB and A2 operation
  250. DIY triode

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