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  1. Carvin Transformer
  2. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  3. RCA 6V6PP amp schematic (Schade fb)
  4. 25W Class A Hybrid Amp
  5. help testing gz32 gz34
  6. A BeamKido?
  7. Zeners and voltage regulation
  8. A2 positive bias push pull possible?
  9. EL34 burn out on Yaqin MC10T
  10. input transformer and impedance question
  11. Options for 300mA tube rectifiers
  12. Electrical flow
  13. 5AR4 @ 250mA
  14. newbie with a choke question
  15. ROCKOAL JUKEBOX 1458
  16. Who can help to recognize this tube preamp?
  17. DIY High power Audio Amplifier from Heathkit SB200
  18. ECL82 amplifier help
  19. 6146B SPICE model wanted
  20. how to install a bias meter in a cathode bias amp
  21. Stuck... Output tube for Single ended?
  22. Aikido Octal Headphone amp
  23. Impedance bridging
  24. Philips AG-9016 frequency range?
  25. fuse voltage rating?
  26. Grounding issue between turntable and tube amp
  27. Great sounding KT88 amp?
  28. Designing a Gomes i/v stage for tda1541a
  29. choke input power supply
  30. Need Help with New Amp Build, Ugly signals
  31. Amplifier Saftey
  32. Cary SLM100 question (older brand)
  33. 6n18p 6n1p 6n2p project needed
  34. Heater wiring idea?
  35. 300B Amp Testing
  36. New amp build
  37. Bamboo chassis 6P3P SE
  38. 6N23P-EB SRPP DAC output stage.
  39. Packard Plamor Schematic needed
  40. Opinion; Alternate input tube socket
  41. Very Simple Attenuator For Audio Card
  42. Switchable PI, Paraphase,Cathodyne, LTP.
  43. Hmm... 4-1000As
  44. Bootstrapped anode
  45. Selecting the correct output transformer/primary impedance
  46. Caddock MK-132 or Mills MRA-12 as plate R?
  47. Minimum rating for stepdown transformer
  48. 6L6 Dared VP-20 issues
  49. Potentiometer Desigations/Codes
  50. 6L6 SE Tube Amp Kit on eBay... opinions?
  51. Building a VT46/PT25H PP amp
  52. Help choosing Sweat Peach FU50 or KT100
  53. New FM-3 Boards
  54. Unity-Coupled amp project
  55. Rectifier injecting noise into heater supply
  56. Tube base failures
  57. 1624 as DHT triode outputs
  58. Will this 2 stage DC DHT cct idea work?
  59. Help with Output Transformer
  60. multi cap verses add on power supply board
  61. 6AS7 hybride CCS
  62. Decware Zbox - looking for Tube buffer mods to reduce buzz
  63. Decware Zbox - looking for Tube buffer mods to reduce buzz
  64. Eico-ST-70 Advice
  65. Choosing Btw 2 EL34 China Tube Amps
  66. Looking for the GA article.
  67. Tube amp left ch. hum
  68. Did i model this PT correctly(psud2)?
  69. Help with the modifications of my tube-amp
  70. detailed photos of RH 84 build?
  71. heathkit aa-191
  72. Which KT-88 tube?
  73. 10m45s cascode diagram?
  74. What amp can make use of these large caps?
  75. Leslie 720 used with stereo keyboard
  76. Tube testers : sorting out settings for the Jackson 648
  77. Question about Shishido 2A3
  78. amp with the FD422
  79. ST-35 C-1 Capacitor on PC-13 board.
  80. Transformer winding examples!!!!
  81. sansui sm-33
  82. How to mod ASL MG OTL 32 DT?
  83. 300b problem
  84. Audio Research M100s
  85. E83CC in PI or Preamp
  86. Current Dumping Amplifier
  87. Quicksilver 8417 Bias
  88. PtP wiring: Solidcore unshielded cable
  89. Removing a motor from a tube turntable.
  90. Why do I go to hamfests?
  91. Circlotron Amplifier Advice Needed
  92. Traces inside tube?
  93. Hybrid for Zobsky
  94. help identifying telefunken tubes
  95. 5U4GB Tube Power Supply Schematic
  96. Copland CTA-401 - early layout ?
  97. Need to run heaters in output tubes, remove plate and screen safe?
  98. 1AG4 Direct Heated Pentode, Output
  99. grid stopper and grid choke on pentode input
  100. Has anyone tryied the GuiGuang 300B?
  101. Honeywell Mercury Tube?
  102. Tube audio-phoolery -- more teats on bulls
  103. Strange tube
  104. Adding a Headphone output to my amp.
  105. 6CG7 Phono/ linestage
  106. RH84 Build from old Dumont console
  107. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  108. Long Tail Pair
  109. Shunt Capacitance in Output Transformer
  110. LTP vs single first stage
  111. 6n23 v. 6dj8 v. 6fq7
  112. newer than noob looking for advice on RH84
  113. 300B failed again
  114. No output transformer tube amp
  115. curious about a curious connection
  116. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  117. My new "vintage" tube radio
  118. help designing 6L6G S.E. amplifier
  119. SVT output iron as single ended
  120. is 6s2p actually equiv to 8532?
  121. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  122. Quad 22 stereo balance/ filter problem
  123. KR 2A3: problems?
  124. Philco F-1801
  125. KT88 Stereo Schematic and help
  126. Where should I connect ground reference for heater supply?
  127. Chassis size and layout question
  128. May tubes amps
  129. 12SX7 coin base tubes? Fake?
  130. Toroidal transformer on tube amp
  131. Current Mirrors in a balanced preamp
  132. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  133. High-end Tube amp kits (all-included)
  134. High Current Maida
  135. High Current Maida
  136. Balanced tube preamp schematic or kit?
  137. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  138. 2A3 PP Can my OPT do the job?
  139. 1626 / 6j4 tube amp
  140. suggestions for driver tube for 2A3
  141. Does anyone know the specs for this Chinese pentode
  142. SiliconRay Kits
  143. Advice needed for hum reduction
  144. low voltage dc tube phase splitter/12AU7
  145. Damper rectifier tubes & voltage doubler
  146. Overheating Resistors on DAC board- "HELP NEEDED"
  147. opt primary inductance and secondary load
  148. SOS-HELP-AIDE-HILFE on " DAC dilema"
  149. Transformer Mounting Direction
  150. HELP! new to working on tube amps and need help with project im going to take on
  151. Fisher 500c radio hum
  152. Modify Power supply for Tube Amp
  153. Unusual amps..
  154. Help with Preamp/Amp hum
  155. Question about step up in 300B PP amp
  156. How do we reach PMillet?
  157. Please help me with a few questions and a idea for an old PA
  158. Edcor CXSE25-8-2.5K single ended UL transformer
  159. Voltseconds ccs for the K-12 kit
  160. The Torpedo Parafeed Headphone Amplifier
  161. Tube Rectifiers do sound different
  162. 6922, a 6DJ8 replacement??
  163. QB2/250 amplifier
  164. WE 350B and 311A
  165. Single ended 300b's
  166. More power!
  167. How the magnetic affect the sound of tube amplifier
  168. Valves replacement for Copland CT402
  169. Changing valve damage
  170. Tube phono preamplifier by 12ax7
  171. Altec 353A oddity
  172. I need to lose that Hummmm
  173. Reduce B+ with zener
  174. triode and pentode 6v6 in parallel
  175. How to make mic input transformer 150:50KCT for mic tube preamp???
  176. Webcor 12AU7 is it a Mullard?
  177. Everett AO48
  178. Resurrecting old tubes
  179. Lumley ST70 Output impedance change and other questions
  180. AC Heater reference to B+
  181. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  182. Overly complicated 1.6A CCS Heater Supply
  183. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  184. Tube/Valve buffer with ECC88
  185. High(er) gm octal pentodes?
  186. Shielding Characteristics of Copper Clad PCB
  187. Starting a Meixing MC34-A07 modification project
  188. 6V SLA Dropping resistor for a 5VDC Filament Supply
  189. Wind (Thermionic?) noise, and other strange sounds
  190. Suggestions for an tube-amp with KT88
  191. SE-100 Golden Tube Audio - REPAIR
  192. Power amp vs preamp topology
  193. EL34 Characteristics for Ug2 400V
  194. old Heathkit amp
  195. Toroid OPT for 300B
  196. Help: Connecting two Fluke meters in series
  197. Preamp Volume Controls
  198. Output SE Transformer Question
  199. Silver bearing grease for tube sockets
  200. Should I try adding a small Tube Preamp to a DTA-100?
  201. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  202. Dynaco stereo 70 look alike
  203. Vacuum Tube factory: For Sale!
  204. Does anybody know anything about this German console
  205. Heater dillema for multi chassis phono stage.
  206. Q: lifespan of JJ ECC99 tubes
  207. Cold solder joint?
  208. Input Impedance/Buffers
  209. Old capacitors..Comments..
  210. Shizuki capacitors?
  211. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  212. Amperex Orange Globe 12ax7 ,Brimar cv4004
  213. Question about transformer lamination stacking techniques
  214. line preamplifier with 6c10
  215. Homebrew Toroidal Output Transformer
  216. Line output tube
  217. MJK's SSSchadeode
  218. Any one know were to buy the fu-80 tube?
  219. Maida Regulator PCB
  220. Suggestions for 7k output transformers.
  221. Help: Fluke 87V Meter Calibration
  222. Searching for Primaluna Prologue Three schematic
  223. Pentode Regulation Question
  224. pentodes with CCS load?
  225. Are these tube PCBs any good ?
  226. china 6L6 SEdiy
  227. What are your opinions of the ST-70 and St-120
  228. Baffle Step Compensation Tube Circuit
  229. 6L6 to 7027 cathode resistor value
  230. Dared MC-7P Upgrades
  231. adapter to go from 6L6 to 807
  232. My Experience with a Jolida 202s (SoFar..)
  233. Cathodyne gain calculator link
  234. Dynakit ST-35?
  235. PSUD modeling old amp PS fails.
  236. Fisher 800 push-pull output stage not symmetrical. Why?
  237. Question of D3a driving 300B
  238. old console amp
  239. New Tim Mellows OTL project
  240. Melted my mains transformer - Where to find replacement ?
  241. Strange.................
  242. Effect of high mains voltage?
  243. Kent SL 21 Tube head need help!!
  244. Hexfred or SIC rectifiers in choke supplies
  245. 'Strange' bass boost with impedance transformer
  246. Did my tubes go south ?
  247. Use of Tango NN-600-600 Transformers ?
  248. Anyone have an explanation for break(burn)in
  249. The Right Tube & TRannie
  250. 6SL7 / 6SN7 Phono

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