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