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  1. Who can help to recognize this tube preamp?
  2. DIY High power Audio Amplifier from Heathkit SB200
  3. ECL82 amplifier help
  4. 6146B SPICE model wanted
  5. how to install a bias meter in a cathode bias amp
  6. Stuck... Output tube for Single ended?
  7. Aikido Octal Headphone amp
  8. silvertone organ amp conversion. 4704
  9. Impedance bridging
  10. Philips AG-9016 frequency range?
  11. fuse voltage rating?
  12. Grounding issue between turntable and tube amp
  13. Great sounding KT88 amp?
  14. Designing a Gomes i/v stage for tda1541a
  15. choke input power supply
  16. Need Help with New Amp Build, Ugly signals
  17. Amplifier Saftey
  18. Cary SLM100 question (older brand)
  19. 6n18p 6n1p 6n2p project needed
  20. Heater wiring idea?
  21. 300B Amp Testing
  22. New amp build
  23. Bamboo chassis 6P3P SE
  24. 6N23P-EB SRPP DAC output stage.
  25. Packard Plamor Schematic needed
  26. Hickok 600A
  27. Opinion; Alternate input tube socket
  28. Very Simple Attenuator For Audio Card
  29. Switchable PI, Paraphase,Cathodyne, LTP.
  30. Hmm... 4-1000As
  31. Bootstrapped anode
  32. Selecting the correct output transformer/primary impedance
  33. Caddock MK-132 or Mills MRA-12 as plate R?
  34. Minimum rating for stepdown transformer
  35. 6L6 Dared VP-20 issues
  36. Potentiometer Desigations/Codes
  37. 6L6 SE Tube Amp Kit on eBay... opinions?
  38. Building a VT46/PT25H PP amp
  39. Help choosing Sweat Peach FU50 or KT100
  40. New FM-3 Boards
  41. Unity-Coupled amp project
  42. Rectifier injecting noise into heater supply
  43. Tube base failures
  44. 1624 as DHT triode outputs
  45. Will this 2 stage DC DHT cct idea work?
  46. Help with Output Transformer
  47. multi cap verses add on power supply board
  48. 6AS7 hybride CCS
  49. Decware Zbox - looking for Tube buffer mods to reduce buzz
  50. Decware Zbox - looking for Tube buffer mods to reduce buzz
  51. Eico-ST-70 Advice
  52. Choosing Btw 2 EL34 China Tube Amps
  53. Looking for the GA article.
  54. Tube amp left ch. hum
  55. Did i model this PT correctly(psud2)?
  56. Help with the modifications of my tube-amp
  57. detailed photos of RH 84 build?
  58. heathkit aa-191
  59. Which KT-88 tube?
  60. 10m45s cascode diagram?
  61. What amp can make use of these large caps?
  62. Leslie 720 used with stereo keyboard
  63. Tube testers : sorting out settings for the Jackson 648
  64. Question about Shishido 2A3
  65. A micro-programmable tube tracer/tester
  66. amp with the FD422
  67. ST-35 C-1 Capacitor on PC-13 board.
  68. Transformer winding examples!!!!
  69. sansui sm-33
  70. How to mod ASL MG OTL 32 DT?
  71. 300b problem
  72. Audio Research M100s
  73. E83CC in PI or Preamp
  74. Current Dumping Amplifier
  75. Quicksilver 8417 Bias
  76. PtP wiring: Solidcore unshielded cable
  77. Removing a motor from a tube turntable.
  78. Why do I go to hamfests?
  79. Circlotron Amplifier Advice Needed
  80. Traces inside tube?
  81. Hybrid for Zobsky
  82. help identifying telefunken tubes
  83. 5U4GB Tube Power Supply Schematic
  84. Copland CTA-401 - early layout ?
  85. AVO CT160: Testing dual triodes
  86. Need to run heaters in output tubes, remove plate and screen safe?
  87. 1AG4 Direct Heated Pentode, Output
  88. grid stopper and grid choke on pentode input
  89. Has anyone tryied the GuiGuang 300B?
  90. Honeywell Mercury Tube?
  91. Tube audio-phoolery -- more teats on bulls
  92. Strange tube
  93. Adding a Headphone output to my amp.
  94. 6CG7 Phono/ linestage
  95. RH84 Build from old Dumont console
  96. 6N16 12x preamp srpp/cathode follower with printed circuit board design.
  97. Long Tail Pair
  98. Hickok 752A 5AR4 rectifier test?
  99. Shunt Capacitance in Output Transformer
  100. LTP vs single first stage
  101. 6n23 v. 6dj8 v. 6fq7
  102. newer than noob looking for advice on RH84
  103. 300B failed again
  104. No output transformer tube amp
  105. curious about a curious connection
  106. tube crossover project - http://www.pmillett.com/tube_active_crossover.htm
  107. My new "vintage" tube radio
  108. help designing 6L6G S.E. amplifier
  109. SVT output iron as single ended
  110. is 6s2p actually equiv to 8532?
  111. Grundig H&B 6007 tube power supply - Repair or gut for parts?
  112. Quad 22 stereo balance/ filter problem
  113. KR 2A3: problems?
  114. Philco F-1801
  115. KT88 Stereo Schematic and help
  116. Where should I connect ground reference for heater supply?
  117. Chassis size and layout question
  118. May tubes amps
  119. 12SX7 coin base tubes? Fake?
  120. Toroidal transformer on tube amp
  121. Current Mirrors in a balanced preamp
  122. Half-mu stage (or SRPP) w/6DJ8/6922/ECC88 tubes at Low B+ voltage?
  123. High-end Tube amp kits (all-included)
  124. High Current Maida
  125. High Current Maida
  126. Balanced tube preamp schematic or kit?
  127. Trying to find tube component supplier, lost webite ...VT42.com or something like it.
  128. 2A3 PP Can my OPT do the job?
  129. 1626 / 6j4 tube amp
  130. suggestions for driver tube for 2A3
  131. Does anyone know the specs for this Chinese pentode
  132. SiliconRay Kits
  133. Advice needed for hum reduction
  134. low voltage dc tube phase splitter/12AU7
  135. Damper rectifier tubes & voltage doubler
  136. Overheating Resistors on DAC board- "HELP NEEDED"
  137. opt primary inductance and secondary load
  138. SOS-HELP-AIDE-HILFE on " DAC dilema"
  139. Transformer Mounting Direction
  140. HELP! new to working on tube amps and need help with project im going to take on
  141. Fisher 500c radio hum
  142. Modify Power supply for Tube Amp
  143. Unusual amps..
  144. Anyone make a guitar amp from an EA-3?
  145. Help with Preamp/Amp hum
  146. Question about step up in 300B PP amp
  147. How do we reach PMillet?
  148. Please help me with a few questions and a idea for an old PA
  149. nos 5y3wgt in 5e3
  150. Edcor CXSE25-8-2.5K single ended UL transformer
  151. Voltseconds ccs for the K-12 kit
  152. The Torpedo Parafeed Headphone Amplifier
  153. Tube Rectifiers do sound different
  154. 6922, a 6DJ8 replacement??
  155. QB2/250 amplifier
  156. WE 350B and 311A
  157. Single ended 300b's
  158. More power!
  159. How the magnetic affect the sound of tube amplifier
  160. Valves replacement for Copland CT402
  161. Changing valve damage
  162. Tube phono preamplifier by 12ax7
  163. Altec 353A oddity
  164. I need to lose that Hummmm
  165. Reduce B+ with zener
  166. Old Marshall plexi clone problem
  167. triode and pentode 6v6 in parallel
  168. How to make mic input transformer 150:50KCT for mic tube preamp???
  169. Webcor 12AU7 is it a Mullard?
  170. Everett AO48
  171. Resurrecting old tubes
  172. Lumley ST70 Output impedance change and other questions
  173. AC Heater reference to B+
  174. Two tube class a2 se trioded el84 with 12dw7 cathode follower driver?
  175. Overly complicated 1.6A CCS Heater Supply
  176. Hibryd amplifier with tube/valve ECC88 (PCC88) and chipamp LM1875
  177. Tube/Valve buffer with ECC88
  178. High(er) gm octal pentodes?
  179. Shielding Characteristics of Copper Clad PCB
  180. Starting a Meixing MC34-A07 modification project
  181. 6V SLA Dropping resistor for a 5VDC Filament Supply
  182. Wind (Thermionic?) noise, and other strange sounds
  183. Suggestions for an tube-amp with KT88
  184. SE-100 Golden Tube Audio - REPAIR
  185. Power amp vs preamp topology
  186. EL34 Characteristics for Ug2 400V
  187. old Heathkit amp
  188. Toroid OPT for 300B
  189. Help: Connecting two Fluke meters in series
  190. Preamp Volume Controls
  191. Output SE Transformer Question
  192. Vintage electrolytic capacitors
  193. Silver bearing grease for tube sockets
  194. Should I try adding a small Tube Preamp to a DTA-100?
  195. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  196. Dynaco stereo 70 look alike
  197. Vacuum Tube factory: For Sale!
  198. Does anybody know anything about this German console
  199. Heater dillema for multi chassis phono stage.
  200. Q: lifespan of JJ ECC99 tubes
  201. Cold solder joint?
  202. Input Impedance/Buffers
  203. Old capacitors..Comments..
  204. Shizuki capacitors?
  205. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  206. Amperex Orange Globe 12ax7 ,Brimar cv4004
  207. Question about transformer lamination stacking techniques
  208. line preamplifier with 6c10
  209. Homebrew Toroidal Output Transformer
  210. Line output tube
  211. MJK's SSSchadeode
  212. Any one know were to buy the fu-80 tube?
  213. Maida Regulator PCB
  214. Suggestions for 7k output transformers.
  215. Help: Fluke 87V Meter Calibration
  216. Searching for Primaluna Prologue Three schematic
  217. JCM Build - Hum and Crackle
  218. Silvertone radio to Guitar Amp conversion question.
  219. Pentode Regulation Question
  220. pentodes with CCS load?
  221. Are these tube PCBs any good ?
  222. china 6L6 SEdiy
  223. What are your opinions of the ST-70 and St-120
  224. Baffle Step Compensation Tube Circuit
  225. 6L6 to 7027 cathode resistor value
  226. PCB to mount snapmout electrolytic capacitors
  227. Dared MC-7P Upgrades
  228. adapter to go from 6L6 to 807
  229. My Experience with a Jolida 202s (SoFar..)
  230. Cathodyne gain calculator link
  231. Dynakit ST-35?
  232. PSUD modeling old amp PS fails.
  233. Fisher 800 push-pull output stage not symmetrical. Why?
  234. Question of D3a driving 300B
  235. old console amp
  236. st35 vs millett DCPP vs tubelab simple SE
  237. New Tim Mellows OTL project
  238. Melted my mains transformer - Where to find replacement ?
  239. Strange.................
  240. Effect of high mains voltage?
  241. Kent SL 21 Tube head need help!!
  242. Hexfred or SIC rectifiers in choke supplies
  243. 'Strange' bass boost with impedance transformer
  244. Did my tubes go south ?
  245. Use of Tango NN-600-600 Transformers ?
  246. Anyone have an explanation for break(burn)in
  247. The Right Tube & TRannie
  248. 6SL7 / 6SN7 Phono
  249. Tube integrated amp in China.
  250. Power supply issues with Borbely style 12AU7/MOSFET hybrid

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