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  1. One of these things is not like the others...
  2. Russian made Groove Tubes?
  3. Awesome tube tester/curve tracer
  4. Tone stack Mod for Bogen H30
  5. help identifying this tube
  6. 6L6--- which brand best keeps the fenders sound
  7. More Bass/Less Mid mod for a Sovtek Mig 50h
  8. EL84 tubes
  9. Source for 9-pin (preamp) tube bases???
  10. Just used a 16 years old new tubes.
  11. Shuguang 6L6WGC - any info
  12. hardware for blackface fender fix
  13. Model t tubes
  14. Anybody looked at tube perveance values?
  15. Tube Storage
  16. When did the American Tung Sol factory cease production?
  17. New production 12AX7
  18. CE Distribution - policy change coming for defective tubes
  19. Sinorussotubeaphobia
  20. Triplett 3444 testing of a 12AX7
  21. Variations in Filament intensity
  22. Used power tubes
  23. New production Mullard El34's
  24. Origin of the 6L6GC?
  25. Sovtek 6CA7 fat bottle 90s era
  26. ID tubes from 1968 Traynor YVM-1
  27. Thoughts on Tung Sol reissue 12AX7 and reliability?
  28. Plate voltage of NOS RCA and NOS Tung Sol??
  29. Old Sovtek EL34G, similar tube?
  30. Current production Sovtek EL84M
  31. 12AX7 tube for overdriven analog organ
  32. ECC83 clipping
  33. Can KT88's be used in my amp?
  34. JJ 6L6GCs... WTF?
  35. Please suggest KT88 tubes
  36. wurlitzer branded general electric grey plate 12ax7
  37. Power Tube Swap Extravaganza!
  38. need a source for 6KG6A/ EL509 tubes
  39. how long do these last?
  40. What is this tube ID?
  41. Avo valve tester questions.
  42. winged C vs Svetlana el34s?
  43. Mercury Rectifier Tubes
  44. boutique/back yard tube maker in Japan [Youtube]
  45. cathode by-pass in push pull six tube hifi amp
  46. Nuvistors - what do you think?
  47. Bias question - 6L6
  48. Adhesive for Repairing 6V6GT Base?
  49. 5763 Tetrode - what do you think?
  50. NOS Metal Can 6V6 Tube Quesiton
  51. Franks Electron Tube Data Sheets site down?
  52. Tube amps
  53. rf/audio screen voltage ratings
  54. Help with value vintage Line Transformer Altec 2282
  55. Suggest preamp tube (12AX7)
  56. Anyone used Sovtek 12ax7wa - Had one crack
  57. ID this Tube?
  58. what power amp is this and who made it ????need schmatic
  59. Recommendations for EL34 for 520V on the plate
  60. Anyone else having issues with Winged C EL34's?
  61. JJ 5Y3?
  62. Retrovalves
  63. Question For Other NOS Tube Junkies
  64. mismatched 6v6 pairs; cathode bias
  65. Article - Return of the Vacuum Tube
  66. Tube-Based Boiler Controller / Thermostat?
  67. Any experience with this tube vendor?
  68. Blackface Deluxe Reverb No bias current reading
  69. Fender Bassman 10 Bias adjust conversion
  70. Proper Tube Removal Process?
  71. dead output transformer
  72. Shuguang data sheets
  73. Ordered JJ's for my Bugera 333XL
  74. The Tube Shop - anyone shopped there?
  75. Which 12AX7 for my 18 watt plexi build ?
  76. 12AH7A info
  77. Changing tubes in a Crate vc5310
  78. Winged C 6L6GC + TubeDepot
  79. WANTED: 2 6N6 "metal can" vacuum tubes
  80. 50Watt Vintage tube PA Tubes?
  81. Northern Electric Tubes
  82. Fooprints (symbols) for tubes for Orcad PCB designer
  83. Sovtek 12AX7s
  84. Octal tubes and microphonics?
  85. Tube amplifier for headphones
  86. Any Opinions on Octal Preamp Tubes?
  87. Cryo treatment of metal things with music coming out of them
  88. JJ EL84 failure
  89. Anybody Know About Ballast Tubes?
  90. 21.5 watts from a Pair of EL84's?
  91. Strange 5AR4 "Problem"
  92. Is cathode bias the same thing as "self" bias?
  93. Rectifier tube question
  94. Who made the Groove Tube KT-66HP?
  95. Bugera 333XL 212 Combo Tube Questions
  96. Senior TC130 tube tester chart
  97. Difference between 5AR$ and 5Y3 as Tweed Deluxe rectifier
  98. What to do with one of a pair of matched tubes
  99. Most reliable current production 5AR4/GZ34?
  100. Please recommend me tubes for my Bassman
  101. Peavey classic 30
  102. EF86 too weak. is it true what they say?
  103. JJ 6L6GC
  104. Will changing from a 5U4GB to ? lower my DC voltages?
  105. New 6Sl7
  106. Best New Issue EL34
  107. Upgrading Epiphone Valve Junior to a 7591 SE design?
  108. 6Y6s.....any good for audio?
  109. My Handsome Devil head
  110. 6AR6WA v. 6L6GC?
  111. EF86-type Sonic Differences.....
  112. New Issue 6L6
  113. 12AX7 HUM
  114. 6U8/ECF82 shielding question
  115. 7581a in Fender amps?
  116. 12AY7 as a DC-coupled cathode follower
  117. Vox AC 100 Mk2
  118. Tung-Sol 6L6STR fragile bottle top
  119. ECF80 or ECF82 for AF?
  120. SED Winged C Prices Way Up
  121. Tube Lineage?
  122. 12ax7LP substitute
  123. Chinese tubes
  124. KT66 Pin 1 variations - which one is accurate?
  125. Tung-Sol RI 6V6 - opinions/experience?
  126. Presently manufactured power tubes
  127. Very elementary question/Sovtek etc.
  128. 807s?
  129. Miniwatt, yes or no?
  130. RCA - customers advice wanted
  131. Chinese and Russian tubes
  132. SS Tube replacements...
  133. Telefunken in Fender amps?
  134. 7868-EH tubes any good? (New Electro Harmonix)
  135. What are the best 6550/KT88 tubes for 2011?
  136. Gold Lions (English)____Anyone familiar?
  137. Bench-testing vintage power tubes?
  138. 6v6 and 6v6GT
  139. cleaning old dirty tubes?
  140. Tube labeling: Paint? Etched?
  141. help plz: identifying old tubes
  142. Baldwin 12AX7 Made in USA AMY 31 13 29
  143. tube test just for 12Ax7?
  144. Sovtek 5Y3GT--good tube?
  145. Are you kidding me!? Really!?
  146. 6SQ7 vs. 6SF5
  147. Anybody have a legible TC-142 schematic?
  148. Woolly guitar sound
  149. 12AX7 Mullard/Philips/Amperex NOS
  150. New JJ 5U4GB whines on warm up.
  151. 7591 vs 6V6
  152. Help me identify some 12ax7 tubes, please?
  153. What does it take to break a tube pin?
  154. EZ81, 6CA4, EL84 Question.
  155. Russian 6P3S
  156. 7868 tube
  157. Screens Still weak in EH6V6?
  158. ken-rad 6l6g and 6v6gc from 1948?
  159. Groove Tubes Marshall distortion Confusion!! lol.
  160. New 12AY7 vs 5751, can't hear the difference...!
  161. B&K 707 Tube Tester - Problem with emmissions test
  162. 6550,6L6,12AX7 and distortion question
  163. Tube question
  164. Any reason I shouldn't...
  165. Teonex
  166. Eurotubes=Bad News
  167. Svetlana factory seconds
  168. Free tube datasheets
  169. RCA 6L6's ?
  170. "Soot" Inside EL84/6BQ5
  171. JCM800 Preamp Clone - Wierd Distortion (oscilloscope pic)
  172. "Shield" brand 6BQ5 Torched Screen Resistors
  173. Preamp tubes
  174. Jan Philips 6L6WGB
  175. Mesa Boogie tubes
  176. R.I.P. CV4004.....Any tube sob stories?
  177. 5Y3 EZ81?
  178. Tube Slag
  179. my NOS 5y3 is not working. bad tube?
  180. Old Hammond Tubes??
  181. Cabs suited for Vox AC50
  182. legacy vl100
  183. I need Help with this tube "8CW5/XL86
  184. Amp should be 100 watts but low on power, why?
  185. 6sl7/12sl7 experimentation ?s'
  186. Question about Tube Output Power
  187. I have some general Q's about tubes!
  188. Question about tube glow.
  189. Hiwatt hi-gain 50 head biasing review
  190. Do different make 12AX7 tubes sound different? and why?
  191. 12at7 labeled as 12ax7
  192. Good Sounding Tubes
  193. New Tubes and disaster
  194. ECC 807 Brimar
  195. In at the deep end....
  196. Hiwatt hi-gain 50 head
  197. 6Y6GT in a Champ ?
  198. Bias probe
  199. No Sound on Fender Twin Pro All tube
  200. hammond tubes question
  201. Crate blue voodoo 60 watt 2-12 combo problems need advise
  202. Ampeg V4, maximizing headroom, needing real answers...
  203. Yellow Jacket Power Tube Adapter
  204. Hammond 7247
  205. The difference a tube can make
  206. What to do
  207. Laney AOR
  208. Tube Tests and Specs
  209. Duende Criatura?
  210. A Good New 12AY7?
  211. Fender Twin Preamp Question.
  212. Ampeg VL-503 not working tube arent glowing
  213. Ampeg SVT pro 3
  214. ECF80 / 6bl8 New ( not NOS ) ???
  215. 5881 question
  216. Useful Valve Test Reports
  217. Help identify a National Electronics 6l6 tube
  218. Tubes
  219. Phase Inverter tube capability
  220. Mesa boogie recto preamp tube placement values
  221. 12b4a ge jan
  222. 5AS4A acceptable Sub For 5U4G ?
  223. What NEW 12AX7 is BEST
  224. Anyone have info on A rcp 808aa tubetester?
  225. Variable cathode resistor
  226. The original chinese 12AX7's
  227. Making a solid state rectifier
  228. Tube amp death (auto bias-trouble)
  229. 12ax7 trouble
  230. Boy, do I HATE this (new tube rant)!
  231. Changing tubes on a Gibson Goldtone Ga-15
  232. 5u4 rattles on powerup
  233. NOS Russian 6Pi6c Beam Tetrodes
  234. Hammond-labeled tubes - mfr?
  235. JJ 6V6s sturdiness
  236. KT66 questions
  237. Changing Vibroluxe Reverb Custom tubes
  238. 6v6, 6f6
  239. What do these tubes do and can I use them in a THD amp?
  240. dsl 100 bias problem
  241. 12AX7 testing
  242. Kt100
  243. Just curious...
  244. What can folks tell me about 6EJ7 ?
  245. Making a quad out of 2 matched pairs
  246. Transconductance and tube performance
  247. Anyone ever try 6CW5s?
  248. 6G6G power tubes in a 5F2A ??
  249. Help with a tube substitution
  250. TV Tubes