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  1. TDO 5w resistors?
  2. Audio Research Dual 75 - Low Bias
  3. 6N3 SRPP + 6N5P Cathode Follower HPA Testing
  4. 6N16 headphone amplifier
  5. 5k plate to plate, el34 triode strapped, 400v b+
  6. russian penthodes 6J2P-EB and 6J9P.
  7. mA meter drags the circuit down
  8. Valve stage coupling capacitor leakage?
  9. Carvin Transformer
  10. Modifying the Lowther Club HK Jazz 6L6 ($449 SET amp)
  11. RCA 6V6PP amp schematic (Schade fb)
  12. 25W Class A Hybrid Amp
  13. help testing gz32 gz34
  14. A BeamKido?
  15. Zeners and voltage regulation
  16. A2 positive bias push pull possible?
  17. EL34 burn out on Yaqin MC10T
  18. input transformer and impedance question
  19. Options for 300mA tube rectifiers
  20. Electrical flow
  21. 5AR4 @ 250mA
  22. newbie with a choke question
  23. ROCKOAL JUKEBOX 1458
  24. Who can help to recognize this tube preamp?
  25. DIY High power Audio Amplifier from Heathkit SB200
  26. ECL82 amplifier help
  27. 6146B SPICE model wanted
  28. how to install a bias meter in a cathode bias amp
  29. Stuck... Output tube for Single ended?
  30. Aikido Octal Headphone amp
  31. silvertone organ amp conversion. 4704
  32. Impedance bridging
  33. Philips AG-9016 frequency range?
  34. fuse voltage rating?
  35. Grounding issue between turntable and tube amp
  36. Great sounding KT88 amp?
  37. Designing a Gomes i/v stage for tda1541a
  38. choke input power supply
  39. Need Help with New Amp Build, Ugly signals
  40. Amplifier Saftey
  41. Cary SLM100 question (older brand)
  42. 6n18p 6n1p 6n2p project needed
  43. Heater wiring idea?
  44. 300B Amp Testing
  45. New amp build
  46. Bamboo chassis 6P3P SE
  47. 6N23P-EB SRPP DAC output stage.
  48. Packard Plamor Schematic needed
  49. Hickok 600A
  50. Opinion; Alternate input tube socket
  51. Very Simple Attenuator For Audio Card
  52. Switchable PI, Paraphase,Cathodyne, LTP.
  53. Hmm... 4-1000As
  54. Bootstrapped anode
  55. Selecting the correct output transformer/primary impedance
  56. Caddock MK-132 or Mills MRA-12 as plate R?
  57. Minimum rating for stepdown transformer
  58. 6L6 Dared VP-20 issues
  59. Potentiometer Desigations/Codes
  60. 6L6 SE Tube Amp Kit on eBay... opinions?
  61. Building a VT46/PT25H PP amp
  62. Help choosing Sweat Peach FU50 or KT100
  63. New FM-3 Boards
  64. Unity-Coupled amp project
  65. Rectifier injecting noise into heater supply
  66. Tube base failures
  67. 1624 as DHT triode outputs
  68. Will this 2 stage DC DHT cct idea work?
  69. Help with Output Transformer
  70. multi cap verses add on power supply board
  71. 6AS7 hybride CCS
  72. Decware Zbox - looking for Tube buffer mods to reduce buzz
  73. Decware Zbox - looking for Tube buffer mods to reduce buzz
  74. Eico-ST-70 Advice
  75. Choosing Btw 2 EL34 China Tube Amps
  76. Looking for the GA article.
  77. Tube amp left ch. hum
  78. Did i model this PT correctly(psud2)?
  79. Help with the modifications of my tube-amp
  80. detailed photos of RH 84 build?
  81. heathkit aa-191
  82. Which KT-88 tube?
  83. 10m45s cascode diagram?
  84. What amp can make use of these large caps?
  85. Leslie 720 used with stereo keyboard
  86. Tube testers : sorting out settings for the Jackson 648
  87. Question about Shishido 2A3
  88. A micro-programmable tube tracer/tester
  89. amp with the FD422
  90. ST-35 C-1 Capacitor on PC-13 board.
  91. Transformer winding examples!!!!
  92. sansui sm-33
  93. How to mod ASL MG OTL 32 DT?
  94. 300b problem
  95. Audio Research M100s
  96. E83CC in PI or Preamp
  97. Current Dumping Amplifier
  98. Quicksilver 8417 Bias
  99. PtP wiring: Solidcore unshielded cable
  100. Removing a motor from a tube turntable.
  101. Why do I go to hamfests?
  102. Circlotron Amplifier Advice Needed
  103. Traces inside tube?
  104. Hybrid for Zobsky
  105. help identifying telefunken tubes
  106. 5U4GB Tube Power Supply Schematic
  107. Copland CTA-401 - early layout ?
  108. AVO CT160: Testing dual triodes
  109. Need to run heaters in output tubes, remove plate and screen safe?
  110. 1AG4 Direct Heated Pentode, Output
  111. grid stopper and grid choke on pentode input
  112. Has anyone tryied the GuiGuang 300B?
  113. Honeywell Mercury Tube?
  114. Tube audio-phoolery -- more teats on bulls
  115. Strange tube
  116. Adding a Headphone output to my amp.
  117. 6CG7 Phono/ linestage
  118. RH84 Build from old Dumont console
  119. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  120. Long Tail Pair
  121. Hickok 752A 5AR4 rectifier test?
  122. Shunt Capacitance in Output Transformer
  123. LTP vs single first stage
  124. 6n23 v. 6dj8 v. 6fq7
  125. newer than noob looking for advice on RH84
  126. 300B failed again
  127. No output transformer tube amp
  128. curious about a curious connection
  129. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  130. My new "vintage" tube radio
  131. help designing 6L6G S.E. amplifier
  132. SVT output iron as single ended
  133. is 6s2p actually equiv to 8532?
  134. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  135. Quad 22 stereo balance/ filter problem
  136. KR 2A3: problems?
  137. Philco F-1801
  138. KT88 Stereo Schematic and help
  139. Where should I connect ground reference for heater supply?
  140. Chassis size and layout question
  141. May tubes amps
  142. 12SX7 coin base tubes? Fake?
  143. Toroidal transformer on tube amp
  144. Current Mirrors in a balanced preamp
  145. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  146. High-end Tube amp kits (all-included)
  147. High Current Maida
  148. High Current Maida
  149. Balanced tube preamp schematic or kit?
  150. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  151. 2A3 PP Can my OPT do the job?
  152. 1626 / 6j4 tube amp
  153. suggestions for driver tube for 2A3
  154. Does anyone know the specs for this Chinese pentode
  155. SiliconRay Kits
  156. Advice needed for hum reduction
  157. low voltage dc tube phase splitter/12AU7
  158. Damper rectifier tubes & voltage doubler
  159. Overheating Resistors on DAC board- "HELP NEEDED"
  160. opt primary inductance and secondary load
  161. SOS-HELP-AIDE-HILFE on " DAC dilema"
  162. Transformer Mounting Direction
  163. HELP! new to working on tube amps and need help with project im going to take on
  164. Fisher 500c radio hum
  165. Modify Power supply for Tube Amp
  166. Unusual amps..
  167. Anyone make a guitar amp from an EA-3?
  168. Help with Preamp/Amp hum
  169. Question about step up in 300B PP amp
  170. How do we reach PMillet?
  171. Please help me with a few questions and a idea for an old PA
  172. nos 5y3wgt in 5e3
  173. Edcor CXSE25-8-2.5K single ended UL transformer
  174. Voltseconds ccs for the K-12 kit
  175. The Torpedo Parafeed Headphone Amplifier
  176. Tube Rectifiers do sound different
  177. 6922, a 6DJ8 replacement??
  178. QB2/250 amplifier
  179. WE 350B and 311A
  180. Single ended 300b's
  181. More power!
  182. How the magnetic affect the sound of tube amplifier
  183. Valves replacement for Copland CT402
  184. Changing valve damage
  185. Tube phono preamplifier by 12ax7
  186. Altec 353A oddity
  187. I need to lose that Hummmm
  188. Reduce B+ with zener
  189. Old Marshall plexi clone problem
  190. triode and pentode 6v6 in parallel
  191. How to make mic input transformer 150:50KCT for mic tube preamp???
  192. Webcor 12AU7 is it a Mullard?
  193. Everett AO48
  194. Resurrecting old tubes
  195. Lumley ST70 Output impedance change and other questions
  196. AC Heater reference to B+
  197. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  198. Overly complicated 1.6A CCS Heater Supply
  199. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  200. Tube/Valve buffer with ECC88
  201. High(er) gm octal pentodes?
  202. Shielding Characteristics of Copper Clad PCB
  203. Starting a Meixing MC34-A07 modification project
  204. 6V SLA Dropping resistor for a 5VDC Filament Supply
  205. Wind (Thermionic?) noise, and other strange sounds
  206. Suggestions for an tube-amp with KT88
  207. SE-100 Golden Tube Audio - REPAIR
  208. Power amp vs preamp topology
  209. EL34 Characteristics for Ug2 400V
  210. old Heathkit amp
  211. Toroid OPT for 300B
  212. Help: Connecting two Fluke meters in series
  213. Preamp Volume Controls
  214. Output SE Transformer Question
  215. Vintage electrolytic capacitors
  216. Silver bearing grease for tube sockets
  217. Should I try adding a small Tube Preamp to a DTA-100?
  218. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  219. Dynaco stereo 70 look alike
  220. Vacuum Tube factory: For Sale!
  221. Does anybody know anything about this German console
  222. Heater dillema for multi chassis phono stage.
  223. Q: lifespan of JJ ECC99 tubes
  224. Cold solder joint?
  225. Input Impedance/Buffers
  226. Old capacitors..Comments..
  227. Shizuki capacitors?
  228. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  229. Amperex Orange Globe 12ax7 ,Brimar cv4004
  230. Question about transformer lamination stacking techniques
  231. line preamplifier with 6c10
  232. Homebrew Toroidal Output Transformer
  233. Line output tube
  234. MJK's SSSchadeode
  235. Any one know were to buy the fu-80 tube?
  236. Maida Regulator PCB
  237. Suggestions for 7k output transformers.
  238. Help: Fluke 87V Meter Calibration
  239. Searching for Primaluna Prologue Three schematic
  240. JCM Build - Hum and Crackle
  241. Silvertone radio to Guitar Amp conversion question.
  242. Pentode Regulation Question
  243. pentodes with CCS load?
  244. Are these tube PCBs any good ?
  245. china 6L6 SEdiy
  246. What are your opinions of the ST-70 and St-120
  247. Baffle Step Compensation Tube Circuit
  248. 6L6 to 7027 cathode resistor value
  249. PCB to mount snapmout electrolytic capacitors
  250. Dared MC-7P Upgrades

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