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  1. 6N1P Data sheet differences
  2. Confident in buying tubes on ebay ?
  3. CCS Troubles
  4. Mengyue el34b schematic needed
  5. safest way to power up a new build
  6. Phono amp Raytheon 6418 tubes
  7. YL1350 Help characteristic and output tranies
  8. EL84 PP using 5K plate to plate primate OPT
  9. VR tube flashing?
  10. Tabletop 12au7 Amp
  11. Renovated website: www.pmillett.com, www.tubebooks.org
  12. Troubleshooting Eico HF-85
  13. Custom chassis europe
  14. Mixer from pre-amp design
  15. SE Output Tranny - Dumb Question
  16. What Tube for a Differential Amplifier?
  17. Thinking of buying a Lumley Reference ST70 with attached passive pre
  18. Psu
  19. Protection of the Irreplaceable
  20. Trix T621 PA amplifier (British)
  21. Resistor types ??? (carbon or metal film)
  22. First Amp Build
  23. Help ID these little PP output xfrmrs?
  24. Rectifier voltage drop question
  25. dc and ac heater supply in Aikido
  26. Can I obtain a suitable B+ voltage with spare parts?
  27. Multi tap transformers dont use the whole windings?
  28. First layout with spud
  29. EL152, GU50 and EL156
  30. Convert a 110 volt Mcintosh Mc275 to 230volt
  31. transformer maker list
  32. design a preamp, so easy....
  33. SRPP - determining load and balancing
  34. Idea for all C3g phono stage
  35. temp check
  36. Pentode Question
  37. K & K Audio Transformer phase splitter?
  38. Transformer Efficiency
  39. How to test a 6H30 tube
  40. Karaoke Tube Hi-end In The Future
  41. What makes the old McIntosh stuff so good?
  42. Paralell 10M45's for 71A DHT filament?
  43. Rod Coleman CCS/gyrator help
  44. Differential amp.Do they pass 2nd harmonics or reject them?
  45. A half 6sl7 tube
  46. failing tube
  47. Capacitor in series - Resistor across ?
  48. Tube preamp choise...
  49. Some general tube questions from a Tube newbie !!
  50. How unsafe is an Autotransformer?
  51. Can a dual triode use a common cathode resistor?
  52. Dared MC-7P
  53. SRC2496 Miniatube tube output stage
  54. Tubetech smc2b multiband compressor
  55. Tweaking/correction question - Xindak MT-1 balance
  56. HELP! ELNA CERAFINE 500V Caps
  57. Em87/ em84
  58. Pioneer SM-83 restoration
  59. Best GM70 version suited for audio??
  60. PSUDII transformer question
  61. what are these caps doing?
  62. Distortion VS OPT impedence
  63. Heater wiring approaches
  64. Rogers pops, crackle and static are driving me mad!
  65. tube power enough?
  66. Ever notice those scratches on some plates??
  67. JE 45/2A3 SE 2001 edition
  68. Difficult Time Finding Replacement Caps
  69. Mini tube output stage
  70. Mismatched Power Tubes
  71. Eimac 35TG amplifier glows !
  72. ECC88 Shield
  73. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  74. SRRP Output stage. Calculating power output.
  75. bogen chb-35
  76. Rating for resistors in power supply?
  77. Effects of Bias /Ammeters....
  78. pentode mode distortion 6LR8? George?
  79. Info for 6b4g PP
  80. Understanding unregulated PSU
  81. C3m C3g tubes
  82. More ebay craziness
  83. Shunt Capacitor
  84. 6021 Load Line
  85. TubeRiaa - How to calculate the impendance?
  86. Fake Vacuum Tube Amps - Funny but real
  87. 12.6v+ vs 6.3v+/- heater supply
  88. Distortion Measurements
  89. modifying kt88 pp ul amp
  90. Aikido help!
  91. Are Positive Grid Voltage Traces Necessary?
  92. New to Tubes
  93. How to read "Typical Characteristics" curves
  94. 12B4 pre output cap and LF instability
  95. attractive amp kit?
  96. Stereo 7O with transformer phase splitter?
  97. Filter Cap Recommendation
  98. New Guy...With a question...
  99. Interesting wiring guide find, thanks NASA!
  100. marantz 9's OPT data
  101. Why do my amps want signal ground and safety earth connected?
  102. scott 299c
  103. Tube Schematics
  104. JLTi EL34 and KT88 Amplifiers
  105. Radford sta15 looking for a nice preamp...
  106. Really subjective question
  107. Pen-toad Question
  108. Revox Model 40- leave it alone or dig in?
  109. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  110. Output transformer from rowe ammi mm4
  111. Equivalent Circuit?
  112. 300b tube life
  113. CBS tube?
  114. Looking for a 700vdc supply
  115. Are all 9-pin sockets the same?
  116. Problem with short Test
  117. Troubleshooting 12B4/RH84/Akai project
  118. hi-end vacuum tube phono preamplifier
  119. PCB help
  120. QUICK transformer Question HELP
  121. Configuring an AB class amp to work in pure A class
  122. SCott LK-48-B balance pot
  123. lost a tube
  124. Lee Laboratory - model 50 Cruiser
  125. 1/2 of 12AX7 in single envelope?
  126. 2 pairs of 8150's
  127. AX84 Clean Preamp
  128. 8150 Tubes
  129. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  130. NJ Tube Auction
  131. pentode buffer
  132. Tube Buffer? 12ax7?
  133. What is this tube?
  134. Kits
  135. Power supply high voltage problems with Melos amp.
  136. 811A Class A2 with Power Drive
  137. Help ID this 12AX7/EL84 Console(?) Amp
  138. Eico HF-86
  139. Marantz 9 Filter CHOKE value??
  140. 10M45s: strange behaviour @ 100mA
  141. LtSpice - Russian tube models
  142. Before I buy KT88's
  143. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  144. adding reverb to Bassman circuit
  145. 300B SE amp: One more one
  146. Already found problem with new amp
  147. LtSpice transformer - confusion
  148. OPUS 5.0 A Modern Mullard
  149. EL34 PP New Design of newbie
  150. Tubelabs SE vs. Simple SE ??
  151. Somebody knows about Lorenz e84l?(real Lorenz)
  152. Aikido Heater PSU help
  153. ecc99 with which Interstage Transformer?
  154. Looking for Audio Research Caps
  155. 2A3 SE Problem
  156. One knob tone control
  157. Tube Base Application ?
  158. The no-brainer project, some questions
  159. schematic request Yarland FV34AIII
  160. SY/Pete Millett Crossover
  161. Please don't stone me. . . .
  162. Golden Tube
  163. BH Curve & OPT choices
  164. Scott Transformers
  165. Identifying transformers
  166. Need Help understanding a triode fed LTP.
  167. How to measure and adjust bias
  168. Another cheap tube amp from China
  169. where to add master volume/gain/tone to Bogen L330?
  170. Another Williamson
  171. Weird EL84 PP behavior
  172. 300B SE Design
  173. Tube/Valve Shop in BERLIN
  174. Aikido buffer/gain selector?
  175. Gaijin friendly audio shop in Tokyo area?
  176. Troubleshooting channel dropout
  177. "groundbus" is this right?
  178. About New Production Tubes
  179. suche JJ E88CC oder 6922 Sovtek in Berlin
  180. 8ohm output transformer with a 4ohm load
  181. Power transformer - good for anything?
  182. Beginner question, swap .047uf for .05uf?
  183. Tetra phono stage
  184. Japanese OPTs
  185. Changing secondary voltage (Uncivilized way)
  186. 4EH7 opinions anyone?
  187. Silvertone 45A tubes....rare variant
  188. single 12AT7 in a tubelab simple se
  189. Finished the "big one"!
  190. CV428 or 5B254M useful?
  191. How about making your own tubes?!
  192. entry level int-amp?
  193. What Cap Is This?
  194. help please with kt-88 ultralinear o/p transformer
  195. A flea thingy that sounds good
  196. Mullard vs. Williamson 60W UL PP amp. Which one?
  197. Need help with PSUD II model
  198. 5v to 2.5v for 2a3 filament
  199. Does 2A3 require a grid stopper?
  200. Hammond ECL86/6GW8 conversion
  201. Connecting two opt's to act as one.
  202. Usefullness of tubes
  203. twisted/isolated/shielded wires?
  204. Feedback question
  205. What tubes for a tube amp?
  206. SE-OPTs
  207. Phase splitting using directly heated tubes?
  208. Change EL84 from Triode to Ultra linear
  209. DC hybrid folded-cascode for Schade
  210. New UK Manufacturer of Valves
  211. Can any here explain the JHS designation?
  212. Too good to be true???
  213. Judging a tube's condition
  214. EF86 tube preamp
  215. Any tips for snap in type caps to replace solder lug cans?
  216. 6EM7 SET Headamp
  217. Are these ALL really EL34 subs?
  218. parallel tubes
  219. Changing the frequency of AC from mains to lower, out of audible range???
  220. Se 6550
  221. New Suppo Audio EL34 amp
  222. 60Watt+ valve design wanted
  223. Interesting tube on e-bay for trans atlantic cable
  224. Need help solving problem on new 2A3 build
  225. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  226. Peavey Classic 30 - Squeal
  227. Where bay M6 lamination (M4,M2) metal for transformer
  228. dynamic pentode screen draw
  229. Tube Sockets
  230. Circuit Ideas for the 815 (martian tube)
  231. Old Tektronix unit, usefull?
  232. my transformer output has a center tap: what do I do with this?
  233. 6AV5GA amp?
  234. Phase splitter idea
  235. Lowering noise in small signal pentodes?
  236. Articles from the past
  237. tube upgrade for vintage orange 120
  238. Help for LTP/CCS plus cathode follower
  239. Conrad Johnson PV-5, my next project, some simple questions
  240. ALTEC 1566a (DiY...if)
  241. Friday Night Fun with a ST-70
  242. Aikido All-In-One Octal Heater Troubles
  243. Guitar tube amp OT Calculation/Winding HELP!
  244. transimpedance amplifier
  245. Jaehong Lee OTL
  246. What tube bases to support for a new tube curve tracer
  247. 6GE5 in driver service for class B P-P
  248. Replace Electrolytics?
  249. Can OT's couple?
  250. tube solid state hybrid guitar amp, looking for schematic

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