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  1. Confident in buying tubes on ebay ?
  2. CCS Troubles
  3. Mengyue el34b schematic needed
  4. safest way to power up a new build
  5. Phono amp Raytheon 6418 tubes
  6. YL1350 Help characteristic and output tranies
  7. EL84 PP using 5K plate to plate primate OPT
  8. VR tube flashing?
  9. Tabletop 12au7 Amp
  10. Renovated website: www.pmillett.com, www.tubebooks.org
  11. Troubleshooting Eico HF-85
  12. Custom chassis europe
  13. Mixer from pre-amp design
  14. SE Output Tranny - Dumb Question
  15. What Tube for a Differential Amplifier?
  16. Thinking of buying a Lumley Reference ST70 with attached passive pre
  17. Psu
  18. Protection of the Irreplaceable
  19. Trix T621 PA amplifier (British)
  20. First Amp Build
  21. Help ID these little PP output xfrmrs?
  22. Rectifier voltage drop question
  23. dc and ac heater supply in Aikido
  24. Can I obtain a suitable B+ voltage with spare parts?
  25. Multi tap transformers dont use the whole windings?
  26. First layout with spud
  27. EL152, GU50 and EL156
  28. Convert a 110 volt Mcintosh Mc275 to 230volt
  29. transformer maker list
  30. design a preamp, so easy....
  31. SRPP - determining load and balancing
  32. Idea for all C3g phono stage
  33. temp check
  34. Pentode Question
  35. K & K Audio Transformer phase splitter?
  36. Transformer Efficiency
  37. How to test a 6H30 tube
  38. Karaoke Tube Hi-end In The Future
  39. What makes the old McIntosh stuff so good?
  40. Paralell 10M45's for 71A DHT filament?
  41. Rod Coleman CCS/gyrator help
  42. Differential amp.Do they pass 2nd harmonics or reject them?
  43. A half 6sl7 tube
  44. failing tube
  45. Capacitor in series - Resistor across ?
  46. Tube preamp choise...
  47. Some general tube questions from a Tube newbie !!
  48. How unsafe is an Autotransformer?
  49. Can a dual triode use a common cathode resistor?
  50. Dared MC-7P
  51. SRC2496 Miniatube tube output stage
  52. Tubetech smc2b multiband compressor
  53. Tweaking/correction question - Xindak MT-1 balance
  54. Em87/ em84
  55. Pioneer SM-83 restoration
  56. Best GM70 version suited for audio??
  57. PSUDII transformer question
  58. what are these caps doing?
  59. Distortion VS OPT impedence
  60. Heater wiring approaches
  61. Rogers pops, crackle and static are driving me mad!
  62. tube power enough?
  63. Ever notice those scratches on some plates??
  64. JE 45/2A3 SE 2001 edition
  65. Mini tube output stage
  66. Mismatched Power Tubes
  67. Eimac 35TG amplifier glows !
  68. ECC88 Shield
  69. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  70. SRRP Output stage. Calculating power output.
  71. bogen chb-35
  72. Rating for resistors in power supply?
  73. Effects of Bias /Ammeters....
  74. pentode mode distortion 6LR8? George?
  75. Info for 6b4g PP
  76. Understanding unregulated PSU
  77. C3m C3g tubes
  78. More ebay craziness
  79. Shunt Capacitor
  80. 6021 Load Line
  81. TubeRiaa - How to calculate the impendance?
  82. Fake Vacuum Tube Amps - Funny but real
  83. 12.6v+ vs 6.3v+/- heater supply
  84. Distortion Measurements
  85. modifying kt88 pp ul amp
  86. Aikido help!
  87. Are Positive Grid Voltage Traces Necessary?
  88. New to Tubes
  89. How to read "Typical Characteristics" curves
  90. 12B4 pre output cap and LF instability
  91. attractive amp kit?
  92. Stereo 7O with transformer phase splitter?
  93. Filter Cap Recommendation
  94. New Guy...With a question...
  95. Interesting wiring guide find, thanks NASA!
  96. marantz 9's OPT data
  97. Why do my amps want signal ground and safety earth connected?
  98. scott 299c
  99. Tube Schematics
  100. JLTi EL34 and KT88 Amplifiers
  101. Radford sta15 looking for a nice preamp...
  102. Really subjective question
  103. Pen-toad Question
  104. Revox Model 40- leave it alone or dig in?
  105. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  106. Output transformer from rowe ammi mm4
  107. Equivalent Circuit?
  108. 300b tube life
  109. CBS tube?
  110. Looking for a 700vdc supply
  111. Are all 9-pin sockets the same?
  112. Problem with short Test
  113. Troubleshooting 12B4/RH84/Akai project
  114. hi-end vacuum tube phono preamplifier
  115. PCB help
  116. QUICK transformer Question HELP
  117. Configuring an AB class amp to work in pure A class
  118. SCott LK-48-B balance pot
  119. lost a tube
  120. Lee Laboratory - model 50 Cruiser
  121. 1/2 of 12AX7 in single envelope?
  122. 2 pairs of 8150's
  123. 8150 Tubes
  124. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  125. NJ Tube Auction
  126. pentode buffer
  127. Tube Buffer? 12ax7?
  128. What is this tube?
  129. Kits
  130. Power supply high voltage problems with Melos amp.
  131. 811A Class A2 with Power Drive
  132. Help ID this 12AX7/EL84 Console(?) Amp
  133. Eico HF-86
  134. Marantz 9 Filter CHOKE value??
  135. 10M45s: strange behaviour @ 100mA
  136. LtSpice - Russian tube models
  137. Before I buy KT88's
  138. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  139. 300B SE amp: One more one
  140. Already found problem with new amp
  141. LtSpice transformer - confusion
  142. OPUS 5.0 A Modern Mullard
  143. EL34 PP New Design of newbie
  144. Somebody knows about Lorenz e84l?(real Lorenz)
  145. Aikido Heater PSU help
  146. ecc99 with which Interstage Transformer?
  147. Looking for Audio Research Caps
  148. 2A3 SE Problem
  149. One knob tone control
  150. Tube Base Application ?
  151. The no-brainer project, some questions
  152. schematic request Yarland FV34AIII
  153. SY/Pete Millett Crossover
  154. Please don't stone me. . . .
  155. Golden Tube
  156. BH Curve & OPT choices
  157. Scott Transformers
  158. Identifying transformers
  159. Need Help understanding a triode fed LTP.
  160. How to measure and adjust bias
  161. Another cheap tube amp from China
  162. where to add master volume/gain/tone to Bogen L330?
  163. Another Williamson
  164. Weird EL84 PP behavior
  165. 300B SE Design
  166. Tube/Valve Shop in BERLIN
  167. Aikido buffer/gain selector?
  168. Gaijin friendly audio shop in Tokyo area?
  169. Troubleshooting channel dropout
  170. "groundbus" is this right?
  171. About New Production Tubes
  172. suche JJ E88CC oder 6922 Sovtek in Berlin
  173. 8ohm output transformer with a 4ohm load
  174. Power transformer - good for anything?
  175. Beginner question, swap .047uf for .05uf?
  176. Tetra phono stage
  177. Japanese OPTs
  178. Changing secondary voltage (Uncivilized way)
  179. 4EH7 opinions anyone?
  180. Silvertone 45A tubes....rare variant
  181. Finished the "big one"!
  182. CV428 or 5B254M useful?
  183. How about making your own tubes?!
  184. entry level int-amp?
  185. What Cap Is This?
  186. help please with kt-88 ultralinear o/p transformer
  187. A flea thingy that sounds good
  188. Mullard vs. Williamson 60W UL PP amp. Which one?
  189. Need help with PSUD II model
  190. 5v to 2.5v for 2a3 filament
  191. Does 2A3 require a grid stopper?
  192. Hammond ECL86/6GW8 conversion
  193. Connecting two opt's to act as one.
  194. Usefullness of tubes
  195. twisted/isolated/shielded wires?
  196. Feedback question
  197. What tubes for a tube amp?
  198. SE-OPTs
  199. Phase splitting using directly heated tubes?
  200. Change EL84 from Triode to Ultra linear
  201. DC hybrid folded-cascode for Schade
  202. New UK Manufacturer of Valves
  203. Can any here explain the JHS designation?
  204. Too good to be true???
  205. Judging a tube's condition
  206. EF86 tube preamp
  207. 6EM7 SET Headamp
  208. Are these ALL really EL34 subs?
  209. parallel tubes
  210. Changing the frequency of AC from mains to lower, out of audible range???
  211. Se 6550
  212. New Suppo Audio EL34 amp
  213. 60Watt+ valve design wanted
  214. Interesting tube on e-bay for trans atlantic cable
  215. Need help solving problem on new 2A3 build
  216. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  217. Where bay M6 lamination (M4,M2) metal for transformer
  218. dynamic pentode screen draw
  219. Tube Sockets
  220. Circuit Ideas for the 815 (martian tube)
  221. Old Tektronix unit, usefull?
  222. my transformer output has a center tap: what do I do with this?
  223. 6AV5GA amp?
  224. Phase splitter idea
  225. Lowering noise in small signal pentodes?
  226. Articles from the past
  227. Help for LTP/CCS plus cathode follower
  228. Conrad Johnson PV-5, my next project, some simple questions
  229. ALTEC 1566a (DiY...if)
  230. Friday Night Fun with a ST-70
  231. Aikido All-In-One Octal Heater Troubles
  232. transimpedance amplifier
  233. Jaehong Lee OTL
  234. What tube bases to support for a new tube curve tracer
  235. 6GE5 in driver service for class B P-P
  236. Replace Electrolytics?
  237. Can OT's couple?
  238. gates m-3638 preamp
  239. Oversized caps (PS and coupling) in RH84: Problem?
  240. What makes a great concertina triode?
  241. Luxman SQ5A
  242. Spice model with grid current 12ax7
  243. converting a magnavox pp 6v6 in triode mode
  244. 6V6 filaments in series
  245. my loud valve preamp
  246. Tranformer for Chinese pre amp (6N11) ?
  247. 1 watt desk speaker
  248. PE06/40 replacement
  249. Salvaged console tube reciever
  250. EF86 swap for 6BQ5 reverb?

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