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  1. DIY valve radio
  2. U600 rectifier valve datasheet, please !!!
  3. Capacitors
  4. please help ! 5687 cd player buffer
  5. LK-72 mis-wired or am I confused?
  6. Need help with tube ID.
  7. spud amp 6c45pi vs 5842
  8. Air gapping transformers
  9. Voltage Measurement
  10. Cornell-Dubilier Caps Western Electric 91A Amplifier
  11. My take on a modern ST-70
  12. pls suggest a project
  13. Help with input stage driver for EL84 output stage
  14. Trying to make sense of the Sweet Peach
  15. Cornell-Dubilier Paper In Oil Capacitors
  16. lm3886 + cathode follower PS problem
  17. Completely differential amplifier final stage
  18. Capacitors in series for coupling?
  19. Help needed with messed-up-amp repairs.
  20. 6DJ8 tube schematic as balanced line stage?
  21. 6DJ8 (balanced) tube line stage
  22. Knight amp circut voltages
  23. Make Mono Phonograph into Mic Preamp?
  24. Yet another passive attenuator
  25. What tube is this?
  26. El Cheapo ok for a first build?
  27. Anyone in Vancouver with a tube tester?
  28. How long can I expect a tube to last
  29. Output transformers... which one...?
  30. My MA845 modded and questions
  31. Sun Audio SV-2a3 HK Clone
  32. departure and tube slop
  33. Wire construction for capped tube plates
  34. Grid resistor location
  35. Meng Yue X1 trial
  36. Yarland pro845
  37. Faulty 5881 tube ?
  38. MF Xpre - help pls!!
  39. Heaters Voltage
  40. Pleas help identify this McIntosh valve amplifier
  41. Curves for Triode Connected 6EW6
  42. microwave oven transformer..
  43. Marantz 8b tubes
  44. Request: The schematic of Audible illusions MODULUS 3
  45. How many watts are really needed?
  46. Worn Tube Rectifier
  47. Bogen CHB35a Problem
  48. 29KQ6 Datasheet
  49. Help selecting a thermistor
  50. Beard P.101, new-to-me.
  51. Audioromy 838 Amp Broke need help..
  52. Inexpensive Guitar Amp
  53. How to Read faded Tube Numbers
  54. Test data for 6H30PI & Hickok 539??
  55. Tube Text books "Reich"
  56. PCL805 parafeed SE idea + question
  57. 12V driver tubes for Engineer's Amp?
  58. >200W with 6BG6GA
  59. Leak stereo 20 modification
  60. Baby Huey components
  61. Monstrous 1kW amp!
  62. blue glow, how?
  63. Using different transformer taps for each needed B+
  64. Heating DHT Cathodes a new way???
  65. Noise problem in 572-10 PP amplifier
  66. Power transformer question (Bud?? calling Bud)
  67. Identifying 12AX7 Tubes
  68. PAS3 to volume pot
  69. 5F6A Amp build help (Fender Bassman)
  70. Jean Hiraga SE KT88
  71. ASC motor run caps....can they be mounted horizontal???
  72. Millivolt signal and tube sockets
  73. 6N1P Data sheet differences
  74. Confident in buying tubes on ebay ?
  75. CCS Troubles
  76. Mengyue el34b schematic needed
  77. safest way to power up a new build
  78. Phono amp Raytheon 6418 tubes
  79. YL1350 Help characteristic and output tranies
  80. EL84 PP using 5K plate to plate primate OPT
  81. VR tube flashing?
  82. Tabletop 12au7 Amp
  83. Renovated website: www.pmillett.com, www.tubebooks.org
  84. Troubleshooting Eico HF-85
  85. Custom chassis europe
  86. Mixer from pre-amp design
  87. SE Output Tranny - Dumb Question
  88. What Tube for a Differential Amplifier?
  89. Thinking of buying a Lumley Reference ST70 with attached passive pre
  90. Psu
  91. Protection of the Irreplaceable
  92. Trix T621 PA amplifier (British)
  93. Resistor types ??? (carbon or metal film)
  94. First Amp Build
  95. Help ID these little PP output xfrmrs?
  96. Rectifier voltage drop question
  97. dc and ac heater supply in Aikido
  98. Can I obtain a suitable B+ voltage with spare parts?
  99. Multi tap transformers dont use the whole windings?
  100. First layout with spud
  101. EL152, GU50 and EL156
  102. Convert a 110 volt Mcintosh Mc275 to 230volt
  103. transformer maker list
  104. design a preamp, so easy....
  105. SRPP - determining load and balancing
  106. Idea for all C3g phono stage
  107. temp check
  108. Pentode Question
  109. K & K Audio Transformer phase splitter?
  110. Transformer Efficiency
  111. How to test a 6H30 tube
  112. Karaoke Tube Hi-end In The Future
  113. What makes the old McIntosh stuff so good?
  114. Paralell 10M45's for 71A DHT filament?
  115. Rod Coleman CCS/gyrator help
  116. Differential amp.Do they pass 2nd harmonics or reject them?
  117. A half 6sl7 tube
  118. failing tube
  119. Capacitor in series - Resistor across ?
  120. Tube preamp choise...
  121. Some general tube questions from a Tube newbie !!
  122. How unsafe is an Autotransformer?
  123. Can a dual triode use a common cathode resistor?
  124. Dared MC-7P
  125. SRC2496 Miniatube tube output stage
  126. Tubetech smc2b multiband compressor
  127. Tweaking/correction question - Xindak MT-1 balance
  128. HELP! ELNA CERAFINE 500V Caps
  129. Em87/ em84
  130. Pioneer SM-83 restoration
  131. Best GM70 version suited for audio??
  132. PSUDII transformer question
  133. what are these caps doing?
  134. Distortion VS OPT impedence
  135. Heater wiring approaches
  136. Rogers pops, crackle and static are driving me mad!
  137. tube power enough?
  138. Ever notice those scratches on some plates??
  139. JE 45/2A3 SE 2001 edition
  140. Difficult Time Finding Replacement Caps
  141. Mini tube output stage
  142. Mismatched Power Tubes
  143. Eimac 35TG amplifier glows !
  144. ECC88 Shield
  145. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  146. SRRP Output stage. Calculating power output.
  147. bogen chb-35
  148. Rating for resistors in power supply?
  149. Effects of Bias /Ammeters....
  150. pentode mode distortion 6LR8? George?
  151. Info for 6b4g PP
  152. Understanding unregulated PSU
  153. C3m C3g tubes
  154. More ebay craziness
  155. Shunt Capacitor
  156. 6021 Load Line
  157. TubeRiaa - How to calculate the impendance?
  158. Fake Vacuum Tube Amps - Funny but real
  159. 12.6v+ vs 6.3v+/- heater supply
  160. Distortion Measurements
  161. modifying kt88 pp ul amp
  162. Aikido help!
  163. Are Positive Grid Voltage Traces Necessary?
  164. New to Tubes
  165. How to read "Typical Characteristics" curves
  166. 12B4 pre output cap and LF instability
  167. attractive amp kit?
  168. Stereo 7O with transformer phase splitter?
  169. Filter Cap Recommendation
  170. New Guy...With a question...
  171. Interesting wiring guide find, thanks NASA!
  172. marantz 9's OPT data
  173. Why do my amps want signal ground and safety earth connected?
  174. scott 299c
  175. Tube Schematics
  176. JLTi EL34 and KT88 Amplifiers
  177. Radford sta15 looking for a nice preamp...
  178. Really subjective question
  179. Pen-toad Question
  180. Revox Model 40- leave it alone or dig in?
  181. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  182. Output transformer from rowe ammi mm4
  183. Equivalent Circuit?
  184. 300b tube life
  185. CBS tube?
  186. Looking for a 700vdc supply
  187. Are all 9-pin sockets the same?
  188. Problem with short Test
  189. Troubleshooting 12B4/RH84/Akai project
  190. hi-end vacuum tube phono preamplifier
  191. PCB help
  192. QUICK transformer Question HELP
  193. Configuring an AB class amp to work in pure A class
  194. SCott LK-48-B balance pot
  195. lost a tube
  196. Lee Laboratory - model 50 Cruiser
  197. 1/2 of 12AX7 in single envelope?
  198. 2 pairs of 8150's
  199. AX84 Clean Preamp
  200. 8150 Tubes
  201. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  202. NJ Tube Auction
  203. pentode buffer
  204. Tube Buffer? 12ax7?
  205. What is this tube?
  206. Kits
  207. Power supply high voltage problems with Melos amp.
  208. 811A Class A2 with Power Drive
  209. Help ID this 12AX7/EL84 Console(?) Amp
  210. Eico HF-86
  211. Marantz 9 Filter CHOKE value??
  212. 10M45s: strange behaviour @ 100mA
  213. LtSpice - Russian tube models
  214. Before I buy KT88's
  215. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  216. adding reverb to Bassman circuit
  217. 300B SE amp: One more one
  218. Already found problem with new amp
  219. LtSpice transformer - confusion
  220. OPUS 5.0 A Modern Mullard
  221. EL34 PP New Design of newbie
  222. Tubelabs SE vs. Simple SE ??
  223. Somebody knows about Lorenz e84l?(real Lorenz)
  224. Aikido Heater PSU help
  225. ecc99 with which Interstage Transformer?
  226. Looking for Audio Research Caps
  227. 2A3 SE Problem
  228. One knob tone control
  229. Tube Base Application ?
  230. The no-brainer project, some questions
  231. schematic request Yarland FV34AIII
  232. SY/Pete Millett Crossover
  233. Please don't stone me. . . .
  234. Golden Tube
  235. BH Curve & OPT choices
  236. Scott Transformers
  237. Identifying transformers
  238. Need Help understanding a triode fed LTP.
  239. How to measure and adjust bias
  240. Another cheap tube amp from China
  241. where to add master volume/gain/tone to Bogen L330?
  242. Another Williamson
  243. Weird EL84 PP behavior
  244. 300B SE Design
  245. Tube/Valve Shop in BERLIN
  246. Aikido buffer/gain selector?
  247. Gaijin friendly audio shop in Tokyo area?
  248. Troubleshooting channel dropout
  249. "groundbus" is this right?
  250. About New Production Tubes

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