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  1. Cheapfield project
  2. heater connection problem
  3. What to do with this PP OPT?
  4. Question about Bridging
  5. White Fuzzy furry growth..........TV-2C/U
  6. Tweaks for 845 Power amp
  7. the aardvark grows a spud!
  8. WEST output transformers?
  9. Tube Buffer Success!
  10. Lafayette LA-234 Amplifier
  11. filter choke voltage rating
  12. Dealing with Mr. Miller (phono)
  13. Western Electric plant
  14. Pentod PP - too much NFB needed to sound nice?
  15. Lf351 replacement for Curcio Daniel I
  16. How bad is grounding one side of AC filament ?
  17. New matched tubes - where to use them
  18. Glow Tube (0B2) Help
  19. Bose 901 + Tube amps
  20. Tube tape NR
  21. Ming Da MC-34B fuse value?
  22. Volume pot for TubelabSE 300B recommendation ?
  23. (help) Make a 13.8V 50 Amp continueous current
  24. Toy amp.
  25. Looking to build a 25-30 WPC Push Pull amp - Need Help
  26. Quicksilver 8417 question
  27. GSM interference
  28. <WTA>Tube biased by LED
  29. source for knobs
  30. Lundahl 4-30 Build
  31. Anyone Have Info On Triode Board For MK IV?
  32. I would like to DIY Marantz model9
  33. 813se DIY OPT problems
  34. Got a big output trafo I want to use.
  35. building S5 k-amp
  36. EL84 max power for HiFi Amp
  37. Question about cathode bypass capacitor:
  38. Curcio Daniel II builders?
  39. 13E1 SE design
  40. Booster Amp for low powered SET
  41. Soft starting the rectifier
  42. Tube preamp components help
  43. My own version of the EAR 834P Clone
  44. Eico HF86 modifications
  45. Heaters and centre tap
  46. DHT's, fixed bias, sharred filament supply
  47. Do New JJ GZ34's have less B+ Drop?
  48. Grounded, Floating, or Thermistor-To-Case for Center Tap
  49. Hi, looking for some info on tube amplifier design basics
  50. Nifty little (cheap ) transformer for bias supply
  51. Problems with my ARC VT 130SE
  52. Telefunken V69B - Tube Amp
  53. HV Regulator
  54. EL95 mini SE
  55. NOS vs. Chinese Plate Caps
  56. TL783 regulated B+ 250V PSU schematic
  57. 6922 tube buffer
  58. 300B grid resistance
  59. 6AU6 Aikido in Triode mode?
  60. brown crud?
  61. Steve Bench's tube crossover
  62. Wierd striation on 6L6GC plate
  63. LT1085-based regulated 6.3v heater supply
  64. Are these tubes cooked?
  65. New Build Power Up Advice
  66. Choosing the right mullard design to match the Foreplay III and Ariels
  67. Dumb question on Coupling cap ratings...
  68. European Triode Festival 2008 - couple of seats left
  69. Building PRETOR toroid preamp
  70. ACT2 - ConradJohnson by 818design
  71. PS questions?
  72. Frank's Tube Database Down?
  73. Anybody try Euro DHTs like RE134, RE304 etc??
  74. Need help...again :)
  75. idea for a simple bias servo for AB PP
  76. GU-32/GI-30 tube PP amp
  77. Switch-mode PSU for tube heaters?
  78. Hammond Primary Lead color is wrong?
  79. A newbie need helps on the very 1st tube PreAmp
  80. why does 12u7 need certain amount of gain to stop hum 120???
  81. EL34 Pushpull imbalance
  82. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  83. Rozenblit Grounded Grid Cascode Pho Preamp Project
  84. Driving the kt88/6550 in set mode
  85. 6550a question for engineer?
  86. Yl1260
  87. Parts layout diagram for SE amp
  88. Da 42 Triode
  89. Bogen CHB100 Power Supply Question
  90. Testing of russian tubes on B&K 747B
  91. VR150 use
  92. First Valve DIY Project
  93. I'm having grid1 current in EL34
  94. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  95. SEPTOR AT-amp (Anti-Triode) being built
  96. Sophia Electric el34 mods/upgrades
  97. Looking to build....
  98. Bias resistor for source follower driver
  99. PL 519 electrical characteristics
  100. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  101. My 6AS7G Fuse Link Checker
  102. Anyone ever had issues with One Electron?
  103. 35% off sale at RadioDaze
  104. phase splitter with Tr ?
  105. Zenith stereo, EL84 SE. What to do...
  106. Free TVA-1 rev.3 schematic
  107. Bat Vk-60
  108. Trouble with amp 6V6
  109. 5-125 UL curves anyone?
  110. Mod it or scrap it?
  111. Bogen M330
  112. 1st Tube Amp - What to build?
  113. 6J5 weird phase inverter
  114. swinging CCS PP output stage
  115. Varying 2 tube amp characteristics: SE treble and richness
  116. Jadis Defy 7 Schematic
  117. microphonic sub-miniature tubes?
  118. Transformer distortion (THD)
  119. Options for replacing EF86? E180F?
  120. changing an integrated tube amp to a power amp
  121. Nice tube test supply
  122. Looking for 300B 2.5V heater vendor
  123. Cap to bypass bias battery
  124. 2A3 SE parafeed with PP-transformer
  125. Preamp Voltages
  126. TVA-1 "Export" circuit/schematic?
  127. 12ax7 series is this correct??
  128. Yet Another Phono Stage Suggestions Thread
  129. 15% off sale at Soniccraft
  130. Sizing Coupling Capacitors
  131. budget xformer for 829B pentode mode PP (class AB) ?
  132. preamp layout suggestions please
  133. Transofrmer secondaries
  134. please help 407a
  135. OPT Grounding / Crosstalk
  136. SE With shared Rk in output
  137. Unsolved problem EL34/12AT7/5AR4
  138. Radford STA25 service UK
  139. My tube DIY Web page, translate into English
  140. suggestion about AIKIDO PRE
  141. Hashimoto A-105 - 6S4A
  142. Looking For Counterpoint SA2000 Schematic
  143. Where do you put the standby switch
  144. Operating point for 6GK5
  145. Audio Research St-70-c3
  146. Help identifying tube amp
  147. Ed8000
  148. power suply for Pre & Phono Use tube 6BM8
  149. ESLDD with "anti-triode"
  150. Schematics border patrol psu
  151. Bias supply idea
  152. dynaco st 70 c3
  153. KT88 and the 6550
  154. GM70/GM70 parafeed SET?
  155. Genalex repro KT88s
  156. Grid - Screen Alignment (X-Rays)
  157. tube matching
  158. DC heaters for 5687 in Aikido?
  159. Connection Jensen 4-pole
  160. Measuring Output Power
  161. Modelling stereo PSU in PSUD ...
  162. Speaker matching transformer.
  163. Sowter's Radford transformer
  164. Cathode bias 6LU8 UL/Triode
  165. Cathode bias 6LU8 UL/Triode
  166. Looking for a linear triode for lowish B+ CF (6N6P?)
  167. need spice model 5814a
  168. 420T or 10E/33B ?????????
  169. Decca DMI-73 and EL-84 weirdness
  170. Pentode guys: important to decouple g2 supply between stages?
  171. Ccs
  172. The Friday Chuckle
  173. Need help deciding what to build
  174. Why does red plate spell early death?
  175. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  176. fisher 400 tweaking issues
  177. GM70 an 813 strapped in SE-UL - circuits?
  178. need help on transformer secondaries connection
  179. Partridge audio output transformer value
  180. Low mu Preamp Triodes as Power Output Tubes
  181. 300B Transformer temperature
  182. Standby Switch Problems
  183. Worth repairing?
  184. Measuring current distortion
  185. GM70 sockets?
  186. high AC mains problem
  187. 250 V PSU help
  188. EL34 UL Curves
  189. datasheet for ge 5star and rca command 5814a?
  190. PS choke voltage/current quetsion
  191. push pull power amp design question (a lot of actually :) )
  192. Knight Amplifier Repair Question
  193. Grant G100AS circuit diagram?
  194. Hashimoto A-105 - summary so far
  195. Related Audio Worlds largest
  196. Why do valves go microphonic?
  197. Allen Wright Superreg manual
  198. Need help on resistor values for 5687 aikido kit
  199. Pioneer SM83 PP amps
  200. Techtube valves/tubes
  201. Datasheet for Russian 6p3s-e
  202. Continually Blowing Fuses
  203. I am done with AES -- a short rant.
  204. CineMag CMMI-15/15B
  205. In market for a Capacitor meter - for a tube project!
  206. What amp(s) would you buy under $1500
  207. Etf 2008
  208. All FET Aikido
  209. what 12au7 have different tone ??vintage and modern
  210. Can 3.5W 2A3 amp drive proAc 1SC?
  211. British seven pin sockets
  212. Pentodes, triode mode and grid screen dissipation 101
  213. Yakov Aronov amps
  214. Suitable tube pre-amp for Phase Linear 400?
  215. Goldpoint value?
  216. TubelabSE 300B power transformer ?
  217. 316A socket
  218. Hashimoto A105 - some results (ECC99)
  219. Some uses for old transformers
  220. Power Supply Question
  221. PY82 as rectifier
  222. pro-ject tube box
  223. Some dumb Questions on Heater CCS supply
  224. Aikido loses power?
  225. Quicksilver 8417/12FQ7 mods
  226. Calculations for an AIKIDO
  227. Music Angel Empty shells
  228. Need help troubleshooting preamp trouble
  229. Compactrons on the brain!
  230. XSE vs. GSXE Edcors
  231. output transformer
  232. How to simulate OPT in LTspice?
  233. 311-b
  234. PSU Design help !!!
  235. BDT Preamp build
  236. Russian tubes / capacitors purchasing
  237. Bored with Leak ST20 - ideas?
  238. KT-88 Music Angel problems with sound level
  239. Fusion Hybrid 300B
  240. I'm new here..... :(
  241. DIY/Buy/Kit
  242. Ralph from Atma-sphere will be giving a talk 09/16
  243. Modified USB DAC board, DDDAC with triode buffer
  244. LS50/GU50 Both Grid Drive
  245. Aikido filament question
  246. 6l6 Se.
  247. Feedback requested on 7591 PP design
  248. Blackburn Mullard/Philips video
  249. DIY sheilded B+ cable
  250. Experimenters Tube Sockets

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