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  1. resistors as inrush limiters before full-wave diodes?
  2. Calibrating Tube Testers
  3. 6L6 Build Suggestions
  4. 5R4GY longevity in tube amps
  5. 5U4GB tube rectifier flash
  6. 6j6 & similar...
  7. Re-bonding tube bases
  8. replacing 6w8's with separate pre and output tubes
  9. Replacing 6L6 with 6V6?
  10. One of these things is not like the others...
  11. Russian made Groove Tubes?
  12. Awesome tube tester/curve tracer
  13. Tone stack Mod for Bogen H30
  14. help identifying this tube
  15. 6L6--- which brand best keeps the fenders sound
  16. More Bass/Less Mid mod for a Sovtek Mig 50h
  17. EL84 tubes
  18. Source for 9-pin (preamp) tube bases???
  19. Just used a 16 years old new tubes.
  20. Shuguang 6L6WGC - any info
  21. hardware for blackface fender fix
  22. Model t tubes
  23. Anybody looked at tube perveance values?
  24. Tube Storage
  25. When did the American Tung Sol factory cease production?
  26. New production 12AX7
  27. CE Distribution - policy change coming for defective tubes
  28. Sinorussotubeaphobia
  29. Triplett 3444 testing of a 12AX7
  30. Variations in Filament intensity
  31. Used power tubes
  32. New production Mullard El34's
  33. Origin of the 6L6GC?
  34. Sovtek 6CA7 fat bottle 90s era
  35. ID tubes from 1968 Traynor YVM-1
  36. Thoughts on Tung Sol reissue 12AX7 and reliability?
  37. Plate voltage of NOS RCA and NOS Tung Sol??
  38. Old Sovtek EL34G, similar tube?
  39. Current production Sovtek EL84M
  40. 12AX7 tube for overdriven analog organ
  41. ECC83 clipping
  42. Can KT88's be used in my amp?
  43. JJ 6L6GCs... WTF?
  44. Please suggest KT88 tubes
  45. wurlitzer branded general electric grey plate 12ax7
  46. Power Tube Swap Extravaganza!
  47. need a source for 6KG6A/ EL509 tubes
  48. how long do these last?
  49. What is this tube ID?
  50. Avo valve tester questions.
  51. winged C vs Svetlana el34s?
  52. Mercury Rectifier Tubes
  53. boutique/back yard tube maker in Japan [Youtube]
  54. cathode by-pass in push pull six tube hifi amp
  55. Nuvistors - what do you think?
  56. Bias question - 6L6
  57. Adhesive for Repairing 6V6GT Base?
  58. 5763 Tetrode - what do you think?
  59. NOS Metal Can 6V6 Tube Quesiton
  60. Franks Electron Tube Data Sheets site down?
  61. Tube amps
  62. rf/audio screen voltage ratings
  63. Help with value vintage Line Transformer Altec 2282
  64. Suggest preamp tube (12AX7)
  65. Anyone used Sovtek 12ax7wa - Had one crack
  66. ID this Tube?
  67. what power amp is this and who made it ????need schmatic
  68. Recommendations for EL34 for 520V on the plate
  69. Anyone else having issues with Winged C EL34's?
  70. JJ 5Y3?
  71. Retrovalves
  72. Question For Other NOS Tube Junkies
  73. mismatched 6v6 pairs; cathode bias
  74. Article - Return of the Vacuum Tube
  75. Tube-Based Boiler Controller / Thermostat?
  76. Any experience with this tube vendor?
  77. Blackface Deluxe Reverb No bias current reading
  78. Fender Bassman 10 Bias adjust conversion
  79. Proper Tube Removal Process?
  80. dead output transformer
  81. Shuguang data sheets
  82. Ordered JJ's for my Bugera 333XL
  83. The Tube Shop - anyone shopped there?
  84. Which 12AX7 for my 18 watt plexi build ?
  85. 12AH7A info
  86. Changing tubes in a Crate vc5310
  87. Winged C 6L6GC + TubeDepot
  88. WANTED: 2 6N6 "metal can" vacuum tubes
  89. 50Watt Vintage tube PA Tubes?
  90. Northern Electric Tubes
  91. Fooprints (symbols) for tubes for Orcad PCB designer
  92. Sovtek 12AX7s
  93. Octal tubes and microphonics?
  94. Tube amplifier for headphones
  95. Any Opinions on Octal Preamp Tubes?
  96. Cryo treatment of metal things with music coming out of them
  97. JJ EL84 failure
  98. Anybody Know About Ballast Tubes?
  99. 21.5 watts from a Pair of EL84's?
  100. Strange 5AR4 "Problem"
  101. Is cathode bias the same thing as "self" bias?
  102. Rectifier tube question
  103. Who made the Groove Tube KT-66HP?
  104. Bugera 333XL 212 Combo Tube Questions
  105. Senior TC130 tube tester chart
  106. Difference between 5AR$ and 5Y3 as Tweed Deluxe rectifier
  107. What to do with one of a pair of matched tubes
  108. Most reliable current production 5AR4/GZ34?
  109. Please recommend me tubes for my Bassman
  110. Peavey classic 30
  111. EF86 too weak. is it true what they say?
  112. JJ 6L6GC
  113. Will changing from a 5U4GB to ? lower my DC voltages?
  114. New 6Sl7
  115. Best New Issue EL34
  116. Upgrading Epiphone Valve Junior to a 7591 SE design?
  117. 6Y6s.....any good for audio?
  118. My Handsome Devil head
  119. 6AR6WA v. 6L6GC?
  120. EF86-type Sonic Differences.....
  121. New Issue 6L6
  122. 12AX7 HUM
  123. 6U8/ECF82 shielding question
  124. 7581a in Fender amps?
  125. 12AY7 as a DC-coupled cathode follower
  126. Vox AC 100 Mk2
  127. Tung-Sol 6L6STR fragile bottle top
  128. ECF80 or ECF82 for AF?
  129. SED Winged C Prices Way Up
  130. Tube Lineage?
  131. 12ax7LP substitute
  132. Chinese tubes
  133. KT66 Pin 1 variations - which one is accurate?
  134. Tung-Sol RI 6V6 - opinions/experience?
  135. Presently manufactured power tubes
  136. Very elementary question/Sovtek etc.
  137. 807s?
  138. Miniwatt, yes or no?
  139. RCA - customers advice wanted
  140. Chinese and Russian tubes
  141. SS Tube replacements...
  142. Telefunken in Fender amps?
  143. 7868-EH tubes any good? (New Electro Harmonix)
  144. What are the best 6550/KT88 tubes for 2011?
  145. Gold Lions (English)____Anyone familiar?
  146. Bench-testing vintage power tubes?
  147. 6v6 and 6v6GT
  148. cleaning old dirty tubes?
  149. Tube labeling: Paint? Etched?
  150. help plz: identifying old tubes
  151. Baldwin 12AX7 Made in USA AMY 31 13 29
  152. tube test just for 12Ax7?
  153. Sovtek 5Y3GT--good tube?
  154. Are you kidding me!? Really!?
  155. 6SQ7 vs. 6SF5
  156. Anybody have a legible TC-142 schematic?
  157. Woolly guitar sound
  158. 12AX7 Mullard/Philips/Amperex NOS
  159. New JJ 5U4GB whines on warm up.
  160. 7591 vs 6V6
  161. Help me identify some 12ax7 tubes, please?
  162. What does it take to break a tube pin?
  163. EZ81, 6CA4, EL84 Question.
  164. Russian 6P3S
  165. 7868 tube
  166. Screens Still weak in EH6V6?
  167. ken-rad 6l6g and 6v6gc from 1948?
  168. Groove Tubes Marshall distortion Confusion!! lol.
  169. New 12AY7 vs 5751, can't hear the difference...!
  170. B&K 707 Tube Tester - Problem with emmissions test
  171. 6550,6L6,12AX7 and distortion question
  172. Tube question
  173. Any reason I shouldn't...
  174. Teonex
  175. Eurotubes=Bad News
  176. Svetlana factory seconds
  177. Free tube datasheets
  178. RCA 6L6's ?
  179. "Soot" Inside EL84/6BQ5
  180. JCM800 Preamp Clone - Wierd Distortion (oscilloscope pic)
  181. "Shield" brand 6BQ5 Torched Screen Resistors
  182. Preamp tubes
  183. Jan Philips 6L6WGB
  184. Mesa Boogie tubes
  185. R.I.P. CV4004.....Any tube sob stories?
  186. 5Y3 EZ81?
  187. Tube Slag
  188. my NOS 5y3 is not working. bad tube?
  189. Old Hammond Tubes??
  190. Cabs suited for Vox AC50
  191. legacy vl100
  192. I need Help with this tube "8CW5/XL86
  193. Amp should be 100 watts but low on power, why?
  194. 6sl7/12sl7 experimentation ?s'
  195. Question about Tube Output Power
  196. I have some general Q's about tubes!
  197. Question about tube glow.
  198. Hiwatt hi-gain 50 head biasing review
  199. Do different make 12AX7 tubes sound different? and why?
  200. 12at7 labeled as 12ax7
  201. Good Sounding Tubes
  202. New Tubes and disaster
  203. ECC 807 Brimar
  204. In at the deep end....
  205. Hiwatt hi-gain 50 head
  206. 6Y6GT in a Champ ?
  207. Bias probe
  208. No Sound on Fender Twin Pro All tube
  209. hammond tubes question
  210. Crate blue voodoo 60 watt 2-12 combo problems need advise
  211. Ampeg V4, maximizing headroom, needing real answers...
  212. Yellow Jacket Power Tube Adapter
  213. Hammond 7247
  214. The difference a tube can make
  215. What to do
  216. Laney AOR
  217. Tube Tests and Specs
  218. Duende Criatura?
  219. A Good New 12AY7?
  220. Fender Twin Preamp Question.
  221. Ampeg VL-503 not working tube arent glowing
  222. Ampeg SVT pro 3
  223. ECF80 / 6bl8 New ( not NOS ) ???
  224. 5881 question
  225. Useful Valve Test Reports
  226. Help identify a National Electronics 6l6 tube
  227. Tubes
  228. Phase Inverter tube capability
  229. Mesa boogie recto preamp tube placement values
  230. 12b4a ge jan
  231. 5AS4A acceptable Sub For 5U4G ?
  232. What NEW 12AX7 is BEST
  233. Anyone have info on A rcp 808aa tubetester?
  234. Variable cathode resistor
  235. The original chinese 12AX7's
  236. Making a solid state rectifier
  237. Tube amp death (auto bias-trouble)
  238. 12ax7 trouble
  239. Boy, do I HATE this (new tube rant)!
  240. Changing tubes on a Gibson Goldtone Ga-15
  241. 5u4 rattles on powerup
  242. NOS Russian 6Pi6c Beam Tetrodes
  243. Hammond-labeled tubes - mfr?
  244. JJ 6V6s sturdiness
  245. KT66 questions
  246. Changing Vibroluxe Reverb Custom tubes
  247. 6v6, 6f6
  248. What do these tubes do and can I use them in a THD amp?
  249. dsl 100 bias problem
  250. 12AX7 testing