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  1. Gibson Ga-20 rvt reverb problems
  2. good value (i.e. cheap) OPT in uk?
  3. Input xfmr, diff stage, CCS questions
  4. Theoretical OPT question
  5. input/driver stage for kt88/6550
  6. thyratron switching
  7. Making component choices (6V6/EL84 PP)
  8. Which socket for a 5Y3??
  9. using #47 in p-p
  10. 6463-12b4a srpp?
  11. Need some help identifying which tubes are suitable
  12. Tube Priceing
  13. edcor output transformer advice
  14. Non top-cap tubes for plasma tweeters
  15. Intermittent Static on ARC REF 3 Preamp
  16. Have you guys seen this yet?
  17. ECC88 heater overvoltage damage?
  18. Recommended designs
  19. Aikido Phono PCB Modifications
  20. Need Power supply advice for Andreas 845
  21. Phonodude question
  22. Power Supply for Aikido Phono Pre
  23. Completed New Combo Amplifier
  24. Want to Build my first Tube Amp
  25. single tube amp ~pspice problem
  26. Modding a tonebone to switch to pentode triode operation?Can this be done??
  27. Relyon KT88/EL34 SE issue, schem attached
  28. Search 35T Schematic
  29. Hickok 600A, shattered mercury rectifier...
  30. Pete Millett Low-Mu Triode Preamp
  31. First scope/buying oscilloscope probes
  32. thyratron rectifier
  33. Need help making some choices on what to build
  34. A2 curves and curvecaptor.
  35. damper diodes ....
  36. Different Rectifier Warmup Times
  37. stupid question of the day
  38. Fisher 400 Output Transformers
  39. Tube amp repair
  40. Hi-end 845 with only two stage
  41. PL519 Heaters in series blow fuse
  42. Looking for parts to tinker with
  43. KT88 Recommendations?
  44. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  45. Mirror of Steve Bench's site
  46. Quick Question About RCA Input
  47. Built an amp kit!
  48. Holy Smoking Toroid Winder
  49. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  50. why do tubes have a treble lost ???
  51. Low Frequency Mains Noise
  52. Help modifying circuit
  53. Ever heard sth like this?
  54. dual volume control
  55. Need DIY help in Los Angeles area with tube preamp
  56. 6c19p se otl
  57. pt
  58. "Killer" Screen Driven Push-Pull Amp Initial Queries
  59. fixed vs. cathode bias
  60. RH84 Push pull?
  61. Cheapfield project
  62. heater connection problem
  63. What to do with this PP OPT?
  64. Question about Bridging
  65. White Fuzzy furry growth..........TV-2C/U
  66. Tweaks for 845 Power amp
  67. the aardvark grows a spud!
  68. WEST output transformers?
  69. Tube Buffer Success!
  70. Lafayette LA-234 Amplifier
  71. filter choke voltage rating
  72. Dealing with Mr. Miller (phono)
  73. Western Electric plant
  74. Pentod PP - too much NFB needed to sound nice?
  75. Lf351 replacement for Curcio Daniel I
  76. How bad is grounding one side of AC filament ?
  77. New matched tubes - where to use them
  78. Glow Tube (0B2) Help
  79. Bose 901 + Tube amps
  80. Tube tape NR
  81. Ming Da MC-34B fuse value?
  82. Potentiometer with bass boost pin for Simple SE?
  83. Volume pot for TubelabSE 300B recommendation ?
  84. (help) Make a 13.8V 50 Amp continueous current
  85. Toy amp.
  86. Looking to build a 25-30 WPC Push Pull amp - Need Help
  87. Quicksilver 8417 question
  88. GSM interference
  89. <WTA>Tube biased by LED
  90. source for knobs
  91. Lundahl 4-30 Build
  92. Anyone Have Info On Triode Board For MK IV?
  93. I would like to DIY Marantz model9
  94. 813se DIY OPT problems
  95. Got a big output trafo I want to use.
  96. building S5 k-amp
  97. EL84 max power for HiFi Amp
  98. Question about cathode bypass capacitor:
  99. Curcio Daniel II builders?
  100. 13E1 SE design
  101. Booster Amp for low powered SET
  102. Soft starting the rectifier
  103. Tube preamp components help
  104. My own version of the EAR 834P Clone
  105. Eico HF86 modifications
  106. Heaters and centre tap
  107. DHT's, fixed bias, sharred filament supply
  108. Do New JJ GZ34's have less B+ Drop?
  109. Grounded, Floating, or Thermistor-To-Case for Center Tap
  110. Hi, looking for some info on tube amplifier design basics
  111. Nifty little (cheap ) transformer for bias supply
  112. Problems with my ARC VT 130SE
  113. Telefunken V69B - Tube Amp
  114. HV Regulator
  115. EL95 mini SE
  116. NOS vs. Chinese Plate Caps
  117. TL783 regulated B+ 250V PSU schematic
  118. Tube buffer for electronic keyboards used in a band?
  119. 6922 tube buffer
  120. 300B grid resistance
  121. 6AU6 Aikido in Triode mode?
  122. brown crud?
  123. Steve Bench's tube crossover
  124. Bogen M120 bass guitar amp coversion
  125. Wierd striation on 6L6GC plate
  126. LT1085-based regulated 6.3v heater supply
  127. Are these tubes cooked?
  128. New Build Power Up Advice
  129. Mic pre idea
  130. Choosing the right mullard design to match the Foreplay III and Ariels
  131. Dumb question on Coupling cap ratings...
  132. European Triode Festival 2008 - couple of seats left
  133. Building PRETOR toroid preamp
  134. ACT2 - ConradJohnson by 818design
  135. PS questions?
  136. Frank's Tube Database Down?
  137. Anybody try Euro DHTs like RE134, RE304 etc??
  138. Need help...again :)
  139. idea for a simple bias servo for AB PP
  140. GU-32/GI-30 tube PP amp
  141. Switch-mode PSU for tube heaters?
  142. Hammond Primary Lead color is wrong?
  143. A newbie need helps on the very 1st tube PreAmp
  144. why does 12u7 need certain amount of gain to stop hum 120???
  145. EL34 Pushpull imbalance
  146. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  147. Rozenblit Grounded Grid Cascode Pho Preamp Project
  148. Driving the kt88/6550 in set mode
  149. 6550a question for engineer?
  150. Yl1260
  151. Parts layout diagram for SE amp
  152. Da 42 Triode
  153. Bogen CHB100 Power Supply Question
  154. Testing of russian tubes on B&K 747B
  155. VR150 use
  156. First Valve DIY Project
  157. I'm having grid1 current in EL34
  158. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  159. SEPTOR AT-amp (Anti-Triode) being built
  160. Sophia Electric el34 mods/upgrades
  161. Looking to build....
  162. Bias resistor for source follower driver
  163. PL 519 electrical characteristics
  164. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  165. My 6AS7G Fuse Link Checker
  166. Anyone ever had issues with One Electron?
  167. 35% off sale at RadioDaze
  168. phase splitter with Tr ?
  169. Chasing my Simple SE problem...
  170. Zenith stereo, EL84 SE. What to do...
  171. Free TVA-1 rev.3 schematic
  172. Bat Vk-60
  173. Trouble with amp 6V6
  174. 5-125 UL curves anyone?
  175. Mod it or scrap it?
  176. Bogen M330
  177. 1st Tube Amp - What to build?
  178. 6J5 weird phase inverter
  179. swinging CCS PP output stage
  180. Varying 2 tube amp characteristics: SE treble and richness
  181. Jadis Defy 7 Schematic
  182. microphonic sub-miniature tubes?
  183. Transformer distortion (THD)
  184. Options for replacing EF86? E180F?
  185. changing an integrated tube amp to a power amp
  186. Nice tube test supply
  187. Looking for 300B 2.5V heater vendor
  188. Cap to bypass bias battery
  189. 2A3 SE parafeed with PP-transformer
  190. Preamp Voltages
  191. TVA-1 "Export" circuit/schematic?
  192. 12ax7 series is this correct??
  193. Yet Another Phono Stage Suggestions Thread
  194. 15% off sale at Soniccraft
  195. Bias Mode Switching Question (guitar Amp)
  196. Sizing Coupling Capacitors
  197. budget xformer for 829B pentode mode PP (class AB) ?
  198. preamp layout suggestions please
  199. Capacitors and hype!
  200. Transofrmer secondaries
  201. please help 407a
  202. OPT Grounding / Crosstalk
  203. SE With shared Rk in output
  204. Unsolved problem EL34/12AT7/5AR4
  205. Radford STA25 service UK
  206. My tube DIY Web page, translate into English
  207. suggestion about AIKIDO PRE
  208. jackson tube tester 648s manuals
  209. Hashimoto A-105 - 6S4A
  210. Looking For Counterpoint SA2000 Schematic
  211. Where do you put the standby switch
  212. Simple SE Schematic
  213. Operating point for 6GK5
  214. Audio Research St-70-c3
  215. Help identifying tube amp
  216. Ed8000
  217. power suply for Pre & Phono Use tube 6BM8
  218. ESLDD with "anti-triode"
  219. Schematics border patrol psu
  220. Tubelab PCBs for an 845 - a good idea?
  221. Bias supply idea
  222. dynaco st 70 c3
  223. KT88 and the 6550
  224. crate vintage club problem
  225. GM70/GM70 parafeed SET?
  226. Genalex repro KT88s
  227. Grid - Screen Alignment (X-Rays)
  228. tube matching
  229. DC heaters for 5687 in Aikido?
  230. Connection Jensen 4-pole
  231. Measuring Output Power
  232. Modelling stereo PSU in PSUD ...
  233. Speaker matching transformer.
  234. Sowter's Radford transformer
  235. Cathode bias 6LU8 UL/Triode
  236. Cathode bias 6LU8 UL/Triode
  237. Sourcing ASC 100uf X386S capacitor
  238. Looking for a linear triode for lowish B+ CF (6N6P?)
  239. need spice model 5814a
  240. 420T or 10E/33B ?????????
  241. Decca DMI-73 and EL-84 weirdness
  242. DIY JTM 45/100 Style Guitar Amp
  243. Pentode guys: important to decouple g2 supply between stages?
  244. Ccs
  245. The Friday Chuckle
  246. Need help deciding what to build
  247. Why does red plate spell early death?
  248. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  249. fisher 400 tweaking issues
  250. GM70 an 813 strapped in SE-UL - circuits?

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