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  1. Tube testers : sorting out settings for the Jackson 648
  2. Question about Shishido 2A3
  3. amp with the FD422
  4. ST-35 C-1 Capacitor on PC-13 board.
  5. Transformer winding examples!!!!
  6. sansui sm-33
  7. How to mod ASL MG OTL 32 DT?
  8. 300b problem
  9. Audio Research M100s
  10. E83CC in PI or Preamp
  11. Current Dumping Amplifier
  12. Quicksilver 8417 Bias
  13. PtP wiring: Solidcore unshielded cable
  14. Removing a motor from a tube turntable.
  15. Why do I go to hamfests?
  16. Circlotron Amplifier Advice Needed
  17. Traces inside tube?
  18. Hybrid for Zobsky
  19. help identifying telefunken tubes
  20. 5U4GB Tube Power Supply Schematic
  21. Copland CTA-401 - early layout ?
  22. Need to run heaters in output tubes, remove plate and screen safe?
  23. 1AG4 Direct Heated Pentode, Output
  24. grid stopper and grid choke on pentode input
  25. Has anyone tryied the GuiGuang 300B?
  26. Honeywell Mercury Tube?
  27. Tube audio-phoolery -- more teats on bulls
  28. Strange tube
  29. Adding a Headphone output to my amp.
  30. 6CG7 Phono/ linestage
  31. RH84 Build from old Dumont console
  32. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  33. Long Tail Pair
  34. Shunt Capacitance in Output Transformer
  35. LTP vs single first stage
  36. 6n23 v. 6dj8 v. 6fq7
  37. newer than noob looking for advice on RH84
  38. 300B failed again
  39. No output transformer tube amp
  40. curious about a curious connection
  41. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  42. My new "vintage" tube radio
  43. help designing 6L6G S.E. amplifier
  44. SVT output iron as single ended
  45. is 6s2p actually equiv to 8532?
  46. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  47. Quad 22 stereo balance/ filter problem
  48. KR 2A3: problems?
  49. Philco F-1801
  50. KT88 Stereo Schematic and help
  51. Where should I connect ground reference for heater supply?
  52. Chassis size and layout question
  53. May tubes amps
  54. 12SX7 coin base tubes? Fake?
  55. Toroidal transformer on tube amp
  56. Current Mirrors in a balanced preamp
  57. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  58. High-end Tube amp kits (all-included)
  59. High Current Maida
  60. High Current Maida
  61. Balanced tube preamp schematic or kit?
  62. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  63. 2A3 PP Can my OPT do the job?
  64. 1626 / 6j4 tube amp
  65. suggestions for driver tube for 2A3
  66. Does anyone know the specs for this Chinese pentode
  67. SiliconRay Kits
  68. Advice needed for hum reduction
  69. low voltage dc tube phase splitter/12AU7
  70. Damper rectifier tubes & voltage doubler
  71. Overheating Resistors on DAC board- "HELP NEEDED"
  72. opt primary inductance and secondary load
  73. SOS-HELP-AIDE-HILFE on " DAC dilema"
  74. Transformer Mounting Direction
  75. HELP! new to working on tube amps and need help with project im going to take on
  76. Fisher 500c radio hum
  77. Modify Power supply for Tube Amp
  78. Unusual amps..
  79. Help with Preamp/Amp hum
  80. Question about step up in 300B PP amp
  81. How do we reach PMillet?
  82. Please help me with a few questions and a idea for an old PA
  83. Edcor CXSE25-8-2.5K single ended UL transformer
  84. Voltseconds ccs for the K-12 kit
  85. The Torpedo Parafeed Headphone Amplifier
  86. Tube Rectifiers do sound different
  87. 6922, a 6DJ8 replacement??
  88. QB2/250 amplifier
  89. WE 350B and 311A
  90. Single ended 300b's
  91. More power!
  92. How the magnetic affect the sound of tube amplifier
  93. Valves replacement for Copland CT402
  94. Changing valve damage
  95. Tube phono preamplifier by 12ax7
  96. Altec 353A oddity
  97. I need to lose that Hummmm
  98. Reduce B+ with zener
  99. triode and pentode 6v6 in parallel
  100. How to make mic input transformer 150:50KCT for mic tube preamp???
  101. Webcor 12AU7 is it a Mullard?
  102. Everett AO48
  103. Resurrecting old tubes
  104. Lumley ST70 Output impedance change and other questions
  105. AC Heater reference to B+
  106. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  107. Overly complicated 1.6A CCS Heater Supply
  108. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  109. Tube/Valve buffer with ECC88
  110. High(er) gm octal pentodes?
  111. Shielding Characteristics of Copper Clad PCB
  112. Starting a Meixing MC34-A07 modification project
  113. 6V SLA Dropping resistor for a 5VDC Filament Supply
  114. Wind (Thermionic?) noise, and other strange sounds
  115. Suggestions for an tube-amp with KT88
  116. SE-100 Golden Tube Audio - REPAIR
  117. Power amp vs preamp topology
  118. EL34 Characteristics for Ug2 400V
  119. old Heathkit amp
  120. Toroid OPT for 300B
  121. Help: Connecting two Fluke meters in series
  122. Preamp Volume Controls
  123. Output SE Transformer Question
  124. Silver bearing grease for tube sockets
  125. Should I try adding a small Tube Preamp to a DTA-100?
  126. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  127. Dynaco stereo 70 look alike
  128. Vacuum Tube factory: For Sale!
  129. Does anybody know anything about this German console
  130. Heater dillema for multi chassis phono stage.
  131. Q: lifespan of JJ ECC99 tubes
  132. Cold solder joint?
  133. Input Impedance/Buffers
  134. Old capacitors..Comments..
  135. Shizuki capacitors?
  136. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  137. Amperex Orange Globe 12ax7 ,Brimar cv4004
  138. Question about transformer lamination stacking techniques
  139. line preamplifier with 6c10
  140. Homebrew Toroidal Output Transformer
  141. Line output tube
  142. MJK's SSSchadeode
  143. Any one know were to buy the fu-80 tube?
  144. Maida Regulator PCB
  145. Suggestions for 7k output transformers.
  146. Help: Fluke 87V Meter Calibration
  147. Searching for Primaluna Prologue Three schematic
  148. Pentode Regulation Question
  149. pentodes with CCS load?
  150. Are these tube PCBs any good ?
  151. china 6L6 SEdiy
  152. What are your opinions of the ST-70 and St-120
  153. Baffle Step Compensation Tube Circuit
  154. 6L6 to 7027 cathode resistor value
  155. Dared MC-7P Upgrades
  156. adapter to go from 6L6 to 807
  157. My Experience with a Jolida 202s (SoFar..)
  158. Cathodyne gain calculator link
  159. Dynakit ST-35?
  160. PSUD modeling old amp PS fails.
  161. Fisher 800 push-pull output stage not symmetrical. Why?
  162. Question of D3a driving 300B
  163. old console amp
  164. New Tim Mellows OTL project
  165. Melted my mains transformer - Where to find replacement ?
  166. Strange.................
  167. Effect of high mains voltage?
  168. Kent SL 21 Tube head need help!!
  169. Hexfred or SIC rectifiers in choke supplies
  170. 'Strange' bass boost with impedance transformer
  171. Did my tubes go south ?
  172. Use of Tango NN-600-600 Transformers ?
  173. Anyone have an explanation for break(burn)in
  174. The Right Tube & TRannie
  175. 6SL7 / 6SN7 Phono
  176. Tube integrated amp in China.
  177. Power supply issues with Borbely style 12AU7/MOSFET hybrid
  178. heater elevation ground point
  179. Edison 12, can anyone help?
  180. Delay B+ using relay?
  181. New Schematic Linestage Tube Preamp using EF86 & 12AX7
  182. Phonostage (WAD clone) and 12B4A Preamp Build
  183. Interstage coupling feedback
  184. Just received a Yaqin MC-10T and have a couple of questions.
  185. Amplifier Troubleshooting
  186. Audio Preamplifier with PCC88
  187. Need Help With These TriodeDick Preamp Scematics
  188. I need help with my amp project
  189. Looking for unbalanced to balanced transformer
  190. Power Transformer Question
  191. My First Tube Amp Project S5 K-12G
  192. 6E2 vacuum tube compatibility
  193. Tube condenser microphone help!
  194. Audio transformer feedback loop
  195. yaqin vk amp without the loudness button uk version
  196. PP driver stage with local feedback
  197. Leader LAG-120B Audio Generator Manual Wanted
  198. Transformer brand question
  199. Single ended at 24Vcc 1+1W @ 8 ohm - three tubes
  200. EL41 PP power supply questions
  201. Reduce output on a ECC88CC class A pre-amp !
  202. SE OT impedance question
  203. DIY Tube amp book?
  204. 6P6P tubes?? will 6V6's work?
  205. RH84 amplifier build, but very weak distorted output
  206. Paralleling filament transformers
  207. 6ak5 triode mode disipation
  208. Equalize or Not Equilize when driving a tube amp ?
  209. How to retire from DIY and sell off all your workshop contents?
  210. New to tubes and diyaudio here, question about torrids and tube amps...
  211. PC Based Oscilliscope for Tube Curcuits
  212. Lamp in HV Centre Tap - why?
  213. EL156 PP
  214. Has anyone here bought from ussr-tubes.com ?
  215. Which cathode bypass capacitor?
  216. RIAA Schematic for-6SL7,7308 or?
  217. Chassis' for Tube Gear
  218. Convergent Audio Tech SL1 preamp
  219. Buy Them While You Can Not When You...
  220. Does anyone know of Thomas Martens?
  221. OTL for 40-80ohm speakers
  222. Morrison Dinosaur
  223. pcl86=14gw8 ??
  224. My little SE with GU50
  225. Source follower in a DC-coupled pp amp?
  226. Tube chassis for retail sale.
  227. Poor man's power supply
  228. High voltage driver for AB2 operation GU81m tubes
  229. 5AR4 rectified power supply question
  230. Direct Coupled Amp
  231. Is this EL84 kit from Germany worth fooling with?
  232. 6v6 PP Pentode mode
  233. 5 pin octal tube socket
  234. RCA Manual Typo?
  235. pete millet low mu preamp
  236. Capability to drive the 211 PP
  237. 6BG6G SE advice needed.
  238. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  239. Power booster
  240. I've just build this steroe amplifier
  241. What amp to build? Push Pull, SE? thoughts?
  242. amp sounds bad- fatman itube 252
  243. 6C33 single ended class A2 (cathode network question)
  244. Sweet Peach EL34b Amp - Distortion?
  245. 6C33C socket types, where to buy?
  246. haedphone amp. using 6418< NEED HELP
  247. finished my 6au6/807 amplifier
  248. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  249. Broskie "Unbalancer" - transformer specifications
  250. Tube chess.

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