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