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  1. Transformer winding examples!!!!
  2. sansui sm-33
  3. How to mod ASL MG OTL 32 DT?
  4. 300b problem
  5. Audio Research M100s
  6. E83CC in PI or Preamp
  7. Current Dumping Amplifier
  8. Quicksilver 8417 Bias
  9. PtP wiring: Solidcore unshielded cable
  10. Removing a motor from a tube turntable.
  11. Why do I go to hamfests?
  12. Circlotron Amplifier Advice Needed
  13. Traces inside tube?
  14. Hybrid for Zobsky
  15. help identifying telefunken tubes
  16. 5U4GB Tube Power Supply Schematic
  17. Copland CTA-401 - early layout ?
  18. AVO CT160: Testing dual triodes
  19. Need to run heaters in output tubes, remove plate and screen safe?
  20. 1AG4 Direct Heated Pentode, Output
  21. grid stopper and grid choke on pentode input
  22. Has anyone tryied the GuiGuang 300B?
  23. Honeywell Mercury Tube?
  24. Tube audio-phoolery -- more teats on bulls
  25. Strange tube
  26. Adding a Headphone output to my amp.
  27. 6CG7 Phono/ linestage
  28. RH84 Build from old Dumont console
  29. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  30. Long Tail Pair
  31. Hickok 752A 5AR4 rectifier test?
  32. Shunt Capacitance in Output Transformer
  33. LTP vs single first stage
  34. 6n23 v. 6dj8 v. 6fq7
  35. newer than noob looking for advice on RH84
  36. 300B failed again
  37. No output transformer tube amp
  38. curious about a curious connection
  39. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  40. My new "vintage" tube radio
  41. help designing 6L6G S.E. amplifier
  42. SVT output iron as single ended
  43. is 6s2p actually equiv to 8532?
  44. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  45. Quad 22 stereo balance/ filter problem
  46. KR 2A3: problems?
  47. Philco F-1801
  48. KT88 Stereo Schematic and help
  49. Where should I connect ground reference for heater supply?
  50. Chassis size and layout question
  51. May tubes amps
  52. 12SX7 coin base tubes? Fake?
  53. Toroidal transformer on tube amp
  54. Current Mirrors in a balanced preamp
  55. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  56. High-end Tube amp kits (all-included)
  57. High Current Maida
  58. High Current Maida
  59. Balanced tube preamp schematic or kit?
  60. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  61. 2A3 PP Can my OPT do the job?
  62. 1626 / 6j4 tube amp
  63. suggestions for driver tube for 2A3
  64. Does anyone know the specs for this Chinese pentode
  65. SiliconRay Kits
  66. Advice needed for hum reduction
  67. low voltage dc tube phase splitter/12AU7
  68. Damper rectifier tubes & voltage doubler
  69. Overheating Resistors on DAC board- "HELP NEEDED"
  70. opt primary inductance and secondary load
  71. SOS-HELP-AIDE-HILFE on " DAC dilema"
  72. Transformer Mounting Direction
  73. HELP! new to working on tube amps and need help with project im going to take on
  74. Fisher 500c radio hum
  75. Modify Power supply for Tube Amp
  76. Unusual amps..
  77. Anyone make a guitar amp from an EA-3?
  78. Help with Preamp/Amp hum
  79. Question about step up in 300B PP amp
  80. How do we reach PMillet?
  81. Please help me with a few questions and a idea for an old PA
  82. nos 5y3wgt in 5e3
  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. Old Marshall plexi clone problem
  100. triode and pentode 6v6 in parallel
  101. How to make mic input transformer 150:50KCT for mic tube preamp???
  102. Webcor 12AU7 is it a Mullard?
  103. Everett AO48
  104. Resurrecting old tubes
  105. Lumley ST70 Output impedance change and other questions
  106. AC Heater reference to B+
  107. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  108. Overly complicated 1.6A CCS Heater Supply
  109. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  110. Tube/Valve buffer with ECC88
  111. High(er) gm octal pentodes?
  112. Shielding Characteristics of Copper Clad PCB
  113. Starting a Meixing MC34-A07 modification project
  114. 6V SLA Dropping resistor for a 5VDC Filament Supply
  115. Wind (Thermionic?) noise, and other strange sounds
  116. Suggestions for an tube-amp with KT88
  117. SE-100 Golden Tube Audio - REPAIR
  118. Power amp vs preamp topology
  119. EL34 Characteristics for Ug2 400V
  120. old Heathkit amp
  121. Toroid OPT for 300B
  122. Help: Connecting two Fluke meters in series
  123. Preamp Volume Controls
  124. Output SE Transformer Question
  125. Vintage electrolytic capacitors
  126. Silver bearing grease for tube sockets
  127. Should I try adding a small Tube Preamp to a DTA-100?
  128. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  129. Dynaco stereo 70 look alike
  130. Vacuum Tube factory: For Sale!
  131. Does anybody know anything about this German console
  132. Heater dillema for multi chassis phono stage.
  133. Q: lifespan of JJ ECC99 tubes
  134. Cold solder joint?
  135. Input Impedance/Buffers
  136. Old capacitors..Comments..
  137. Shizuki capacitors?
  138. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  139. Amperex Orange Globe 12ax7 ,Brimar cv4004
  140. Question about transformer lamination stacking techniques
  141. line preamplifier with 6c10
  142. Homebrew Toroidal Output Transformer
  143. Line output tube
  144. MJK's SSSchadeode
  145. Any one know were to buy the fu-80 tube?
  146. Maida Regulator PCB
  147. Suggestions for 7k output transformers.
  148. Help: Fluke 87V Meter Calibration
  149. Searching for Primaluna Prologue Three schematic
  150. JCM Build - Hum and Crackle
  151. Silvertone radio to Guitar Amp conversion question.
  152. Pentode Regulation Question
  153. pentodes with CCS load?
  154. Are these tube PCBs any good ?
  155. china 6L6 SEdiy
  156. What are your opinions of the ST-70 and St-120
  157. Baffle Step Compensation Tube Circuit
  158. 6L6 to 7027 cathode resistor value
  159. PCB to mount snapmout electrolytic capacitors
  160. Dared MC-7P Upgrades
  161. adapter to go from 6L6 to 807
  162. My Experience with a Jolida 202s (SoFar..)
  163. Cathodyne gain calculator link
  164. Dynakit ST-35?
  165. PSUD modeling old amp PS fails.
  166. Fisher 800 push-pull output stage not symmetrical. Why?
  167. Question of D3a driving 300B
  168. old console amp
  169. st35 vs millett DCPP vs tubelab simple SE
  170. New Tim Mellows OTL project
  171. Melted my mains transformer - Where to find replacement ?
  172. Strange.................
  173. Effect of high mains voltage?
  174. Kent SL 21 Tube head need help!!
  175. Hexfred or SIC rectifiers in choke supplies
  176. 'Strange' bass boost with impedance transformer
  177. Did my tubes go south ?
  178. Use of Tango NN-600-600 Transformers ?
  179. Anyone have an explanation for break(burn)in
  180. The Right Tube & TRannie
  181. 6SL7 / 6SN7 Phono
  182. Tube integrated amp in China.
  183. Power supply issues with Borbely style 12AU7/MOSFET hybrid
  184. heater elevation ground point
  185. Edison 12, can anyone help?
  186. Delay B+ using relay?
  187. New Schematic Linestage Tube Preamp using EF86 & 12AX7
  188. Phonostage (WAD clone) and 12B4A Preamp Build
  189. Interstage coupling feedback
  190. Just received a Yaqin MC-10T and have a couple of questions.
  191. Amplifier Troubleshooting
  192. Audio Preamplifier with PCC88
  193. Need Help With These TriodeDick Preamp Scematics
  194. I need help with my amp project
  195. Looking for unbalanced to balanced transformer
  196. Power Transformer Question
  197. My First Tube Amp Project S5 K-12G
  198. 6E2 vacuum tube compatibility
  199. Tube condenser microphone help!
  200. Audio transformer feedback loop
  201. yaqin vk amp without the loudness button uk version
  202. PP driver stage with local feedback
  203. Leader LAG-120B Audio Generator Manual Wanted
  204. Transformer brand question
  205. Single ended at 24Vcc 1+1W @ 8 ohm - three tubes
  206. EL41 PP power supply questions
  207. Reduce output on a ECC88CC class A pre-amp !
  208. SE OT impedance question
  209. DIY Tube amp book?
  210. 6P6P tubes?? will 6V6's work?
  211. RH84 amplifier build, but very weak distorted output
  212. Paralleling filament transformers
  213. 6ak5 triode mode disipation
  214. Equalize or Not Equilize when driving a tube amp ?
  215. How to retire from DIY and sell off all your workshop contents?
  216. New to tubes and diyaudio here, question about torrids and tube amps...
  217. PC Based Oscilliscope for Tube Curcuits
  218. Lamp in HV Centre Tap - why?
  219. EL156 PP
  220. 300B resistor
  221. Has anyone here bought from ussr-tubes.com ?
  222. Which cathode bypass capacitor?
  223. RIAA Schematic for-6SL7,7308 or?
  224. Chassis' for Tube Gear
  225. Convergent Audio Tech SL1 preamp
  226. Buy Them While You Can Not When You...
  227. Does anyone know of Thomas Martens?
  228. OTL for 40-80ohm speakers
  229. Morrison Dinosaur
  230. pcl86=14gw8 ??
  231. My little SE with GU50
  232. Source follower in a DC-coupled pp amp?
  233. Tube chassis for retail sale.
  234. Poor man's power supply
  235. High voltage driver for AB2 operation GU81m tubes
  236. 5AR4 rectified power supply question
  237. Direct Coupled Amp
  238. Is this EL84 kit from Germany worth fooling with?
  239. 6v6 PP Pentode mode
  240. 5 pin octal tube socket
  241. RCA Manual Typo?
  242. pete millet low mu preamp
  243. Capability to drive the 211 PP
  244. 6BG6G SE advice needed.
  245. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  246. Power booster
  247. I've just build this steroe amplifier
  248. What amp to build? Push Pull, SE? thoughts?
  249. amp sounds bad- fatman itube 252
  250. 6C33 single ended class A2 (cathode network question)

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