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  1. Worn Tube Rectifier
  2. Bogen CHB35a Problem
  3. 29KQ6 Datasheet
  4. Help selecting a thermistor
  5. Beard P.101, new-to-me.
  6. Audioromy 838 Amp Broke need help..
  7. How to Read faded Tube Numbers
  8. Tube Text books "Reich"
  9. PCL805 parafeed SE idea + question
  10. 12V driver tubes for Engineer's Amp?
  11. >200W with 6BG6GA
  12. Leak stereo 20 modification
  13. Baby Huey components
  14. Monstrous 1kW amp!
  15. blue glow, how?
  16. Using different transformer taps for each needed B+
  17. Heating DHT Cathodes a new way???
  18. Noise problem in 572-10 PP amplifier
  19. Power transformer question (Bud?? calling Bud)
  20. Identifying 12AX7 Tubes
  21. PAS3 to volume pot
  22. Jean Hiraga SE KT88
  23. Millivolt signal and tube sockets
  24. 6N1P Data sheet differences
  25. Confident in buying tubes on ebay ?
  26. CCS Troubles
  27. Mengyue el34b schematic needed
  28. safest way to power up a new build
  29. Phono amp Raytheon 6418 tubes
  30. YL1350 Help characteristic and output tranies
  31. EL84 PP using 5K plate to plate primate OPT
  32. VR tube flashing?
  33. Tabletop 12au7 Amp
  34. Renovated website: www.pmillett.com, www.tubebooks.org
  35. Troubleshooting Eico HF-85
  36. Custom chassis europe
  37. Mixer from pre-amp design
  38. SE Output Tranny - Dumb Question
  39. What Tube for a Differential Amplifier?
  40. Thinking of buying a Lumley Reference ST70 with attached passive pre
  41. Psu
  42. Protection of the Irreplaceable
  43. Trix T621 PA amplifier (British)
  44. First Amp Build
  45. Help ID these little PP output xfrmrs?
  46. Rectifier voltage drop question
  47. dc and ac heater supply in Aikido
  48. Can I obtain a suitable B+ voltage with spare parts?
  49. Multi tap transformers dont use the whole windings?
  50. First layout with spud
  51. EL152, GU50 and EL156
  52. Convert a 110 volt Mcintosh Mc275 to 230volt
  53. transformer maker list
  54. design a preamp, so easy....
  55. SRPP - determining load and balancing
  56. Idea for all C3g phono stage
  57. temp check
  58. Pentode Question
  59. K & K Audio Transformer phase splitter?
  60. Transformer Efficiency
  61. How to test a 6H30 tube
  62. Karaoke Tube Hi-end In The Future
  63. What makes the old McIntosh stuff so good?
  64. Paralell 10M45's for 71A DHT filament?
  65. Rod Coleman CCS/gyrator help
  66. Differential amp.Do they pass 2nd harmonics or reject them?
  67. A half 6sl7 tube
  68. failing tube
  69. Capacitor in series - Resistor across ?
  70. Tube preamp choise...
  71. Some general tube questions from a Tube newbie !!
  72. How unsafe is an Autotransformer?
  73. Can a dual triode use a common cathode resistor?
  74. Dared MC-7P
  75. SRC2496 Miniatube tube output stage
  76. Tubetech smc2b multiband compressor
  77. Tweaking/correction question - Xindak MT-1 balance
  78. Em87/ em84
  79. Pioneer SM-83 restoration
  80. Best GM70 version suited for audio??
  81. PSUDII transformer question
  82. what are these caps doing?
  83. Distortion VS OPT impedence
  84. Heater wiring approaches
  85. Rogers pops, crackle and static are driving me mad!
  86. tube power enough?
  87. Ever notice those scratches on some plates??
  88. JE 45/2A3 SE 2001 edition
  89. Mini tube output stage
  90. Mismatched Power Tubes
  91. Eimac 35TG amplifier glows !
  92. ECC88 Shield
  93. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  94. SRRP Output stage. Calculating power output.
  95. bogen chb-35
  96. Rating for resistors in power supply?
  97. Effects of Bias /Ammeters....
  98. pentode mode distortion 6LR8? George?
  99. Info for 6b4g PP
  100. Understanding unregulated PSU
  101. C3m C3g tubes
  102. More ebay craziness
  103. Shunt Capacitor
  104. 6021 Load Line
  105. TubeRiaa - How to calculate the impendance?
  106. Fake Vacuum Tube Amps - Funny but real
  107. 12.6v+ vs 6.3v+/- heater supply
  108. Distortion Measurements
  109. modifying kt88 pp ul amp
  110. Aikido help!
  111. Are Positive Grid Voltage Traces Necessary?
  112. New to Tubes
  113. How to read "Typical Characteristics" curves
  114. 12B4 pre output cap and LF instability
  115. attractive amp kit?
  116. Stereo 7O with transformer phase splitter?
  117. Filter Cap Recommendation
  118. New Guy...With a question...
  119. Interesting wiring guide find, thanks NASA!
  120. marantz 9's OPT data
  121. Why do my amps want signal ground and safety earth connected?
  122. scott 299c
  123. Tube Schematics
  124. JLTi EL34 and KT88 Amplifiers
  125. Radford sta15 looking for a nice preamp...
  126. Really subjective question
  127. Pen-toad Question
  128. Revox Model 40- leave it alone or dig in?
  129. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  130. Output transformer from rowe ammi mm4
  131. Equivalent Circuit?
  132. 300b tube life
  133. CBS tube?
  134. Looking for a 700vdc supply
  135. Are all 9-pin sockets the same?
  136. Problem with short Test
  137. Troubleshooting 12B4/RH84/Akai project
  138. hi-end vacuum tube phono preamplifier
  139. PCB help
  140. QUICK transformer Question HELP
  141. Configuring an AB class amp to work in pure A class
  142. SCott LK-48-B balance pot
  143. lost a tube
  144. Lee Laboratory - model 50 Cruiser
  145. 1/2 of 12AX7 in single envelope?
  146. 2 pairs of 8150's
  147. 8150 Tubes
  148. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  149. NJ Tube Auction
  150. pentode buffer
  151. Tube Buffer? 12ax7?
  152. What is this tube?
  153. Kits
  154. Power supply high voltage problems with Melos amp.
  155. 811A Class A2 with Power Drive
  156. Help ID this 12AX7/EL84 Console(?) Amp
  157. Eico HF-86
  158. Marantz 9 Filter CHOKE value??
  159. 10M45s: strange behaviour @ 100mA
  160. LtSpice - Russian tube models
  161. Before I buy KT88's
  162. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  163. 300B SE amp: One more one
  164. Already found problem with new amp
  165. LtSpice transformer - confusion
  166. OPUS 5.0 A Modern Mullard
  167. EL34 PP New Design of newbie
  168. Somebody knows about Lorenz e84l?(real Lorenz)
  169. Aikido Heater PSU help
  170. ecc99 with which Interstage Transformer?
  171. Looking for Audio Research Caps
  172. 2A3 SE Problem
  173. One knob tone control
  174. Tube Base Application ?
  175. The no-brainer project, some questions
  176. schematic request Yarland FV34AIII
  177. SY/Pete Millett Crossover
  178. Please don't stone me. . . .
  179. Golden Tube
  180. BH Curve & OPT choices
  181. Scott Transformers
  182. Identifying transformers
  183. Need Help understanding a triode fed LTP.
  184. How to measure and adjust bias
  185. Another cheap tube amp from China
  186. where to add master volume/gain/tone to Bogen L330?
  187. Another Williamson
  188. Weird EL84 PP behavior
  189. 300B SE Design
  190. Tube/Valve Shop in BERLIN
  191. Aikido buffer/gain selector?
  192. Gaijin friendly audio shop in Tokyo area?
  193. Troubleshooting channel dropout
  194. "groundbus" is this right?
  195. About New Production Tubes
  196. suche JJ E88CC oder 6922 Sovtek in Berlin
  197. 8ohm output transformer with a 4ohm load
  198. Power transformer - good for anything?
  199. Beginner question, swap .047uf for .05uf?
  200. Tetra phono stage
  201. Japanese OPTs
  202. Changing secondary voltage (Uncivilized way)
  203. 4EH7 opinions anyone?
  204. Silvertone 45A tubes....rare variant
  205. Finished the "big one"!
  206. CV428 or 5B254M useful?
  207. How about making your own tubes?!
  208. entry level int-amp?
  209. What Cap Is This?
  210. help please with kt-88 ultralinear o/p transformer
  211. A flea thingy that sounds good
  212. Mullard vs. Williamson 60W UL PP amp. Which one?
  213. Need help with PSUD II model
  214. 5v to 2.5v for 2a3 filament
  215. Does 2A3 require a grid stopper?
  216. Hammond ECL86/6GW8 conversion
  217. Connecting two opt's to act as one.
  218. Usefullness of tubes
  219. twisted/isolated/shielded wires?
  220. Feedback question
  221. What tubes for a tube amp?
  222. SE-OPTs
  223. Phase splitting using directly heated tubes?
  224. Change EL84 from Triode to Ultra linear
  225. DC hybrid folded-cascode for Schade
  226. New UK Manufacturer of Valves
  227. Can any here explain the JHS designation?
  228. Too good to be true???
  229. Judging a tube's condition
  230. EF86 tube preamp
  231. 6EM7 SET Headamp
  232. Are these ALL really EL34 subs?
  233. parallel tubes
  234. Changing the frequency of AC from mains to lower, out of audible range???
  235. Se 6550
  236. New Suppo Audio EL34 amp
  237. 60Watt+ valve design wanted
  238. Interesting tube on e-bay for trans atlantic cable
  239. Need help solving problem on new 2A3 build
  240. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  241. Where bay M6 lamination (M4,M2) metal for transformer
  242. dynamic pentode screen draw
  243. Tube Sockets
  244. Circuit Ideas for the 815 (martian tube)
  245. Old Tektronix unit, usefull?
  246. my transformer output has a center tap: what do I do with this?
  247. 6AV5GA amp?
  248. Phase splitter idea
  249. Lowering noise in small signal pentodes?
  250. Articles from the past

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