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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. Resistor types ??? (carbon or metal film)
  21. First Amp Build
  22. Help ID these little PP output xfrmrs?
  23. Rectifier voltage drop question
  24. dc and ac heater supply in Aikido
  25. Can I obtain a suitable B+ voltage with spare parts?
  26. Multi tap transformers dont use the whole windings?
  27. First layout with spud
  28. EL152, GU50 and EL156
  29. Convert a 110 volt Mcintosh Mc275 to 230volt
  30. transformer maker list
  31. design a preamp, so easy....
  32. SRPP - determining load and balancing
  33. Idea for all C3g phono stage
  34. temp check
  35. Pentode Question
  36. K & K Audio Transformer phase splitter?
  37. Transformer Efficiency
  38. How to test a 6H30 tube
  39. Karaoke Tube Hi-end In The Future
  40. What makes the old McIntosh stuff so good?
  41. Paralell 10M45's for 71A DHT filament?
  42. Rod Coleman CCS/gyrator help
  43. Differential amp.Do they pass 2nd harmonics or reject them?
  44. A half 6sl7 tube
  45. failing tube
  46. Capacitor in series - Resistor across ?
  47. Tube preamp choise...
  48. Some general tube questions from a Tube newbie !!
  49. How unsafe is an Autotransformer?
  50. Can a dual triode use a common cathode resistor?
  51. Dared MC-7P
  52. SRC2496 Miniatube tube output stage
  53. Tubetech smc2b multiband compressor
  54. Tweaking/correction question - Xindak MT-1 balance
  55. HELP! ELNA CERAFINE 500V Caps
  56. Em87/ em84
  57. Pioneer SM-83 restoration
  58. Best GM70 version suited for audio??
  59. PSUDII transformer question
  60. what are these caps doing?
  61. Distortion VS OPT impedence
  62. Heater wiring approaches
  63. Rogers pops, crackle and static are driving me mad!
  64. tube power enough?
  65. Ever notice those scratches on some plates??
  66. JE 45/2A3 SE 2001 edition
  67. Difficult Time Finding Replacement Caps
  68. Mini tube output stage
  69. Mismatched Power Tubes
  70. Eimac 35TG amplifier glows !
  71. ECC88 Shield
  72. One amp channel for mid, the other for tweeter, to SE or to PP, THAT is the Question?
  73. SRRP Output stage. Calculating power output.
  74. bogen chb-35
  75. Rating for resistors in power supply?
  76. Effects of Bias /Ammeters....
  77. pentode mode distortion 6LR8? George?
  78. Info for 6b4g PP
  79. Understanding unregulated PSU
  80. C3m C3g tubes
  81. More ebay craziness
  82. Shunt Capacitor
  83. 6021 Load Line
  84. TubeRiaa - How to calculate the impendance?
  85. Fake Vacuum Tube Amps - Funny but real
  86. 12.6v+ vs 6.3v+/- heater supply
  87. Distortion Measurements
  88. modifying kt88 pp ul amp
  89. Aikido help!
  90. Are Positive Grid Voltage Traces Necessary?
  91. New to Tubes
  92. How to read "Typical Characteristics" curves
  93. 12B4 pre output cap and LF instability
  94. attractive amp kit?
  95. Stereo 7O with transformer phase splitter?
  96. Filter Cap Recommendation
  97. New Guy...With a question...
  98. Interesting wiring guide find, thanks NASA!
  99. marantz 9's OPT data
  100. Why do my amps want signal ground and safety earth connected?
  101. scott 299c
  102. Tube Schematics
  103. JLTi EL34 and KT88 Amplifiers
  104. Radford sta15 looking for a nice preamp...
  105. Really subjective question
  106. Pen-toad Question
  107. Revox Model 40- leave it alone or dig in?
  108. Driver of Sumo Tubes PP for anybody: Shematic and PCB
  109. Output transformer from rowe ammi mm4
  110. Equivalent Circuit?
  111. 300b tube life
  112. CBS tube?
  113. Looking for a 700vdc supply
  114. Are all 9-pin sockets the same?
  115. Problem with short Test
  116. Troubleshooting 12B4/RH84/Akai project
  117. hi-end vacuum tube phono preamplifier
  118. PCB help
  119. QUICK transformer Question HELP
  120. Configuring an AB class amp to work in pure A class
  121. SCott LK-48-B balance pot
  122. lost a tube
  123. Lee Laboratory - model 50 Cruiser
  124. 1/2 of 12AX7 in single envelope?
  125. 2 pairs of 8150's
  126. 8150 Tubes
  127. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  128. NJ Tube Auction
  129. pentode buffer
  130. Tube Buffer? 12ax7?
  131. What is this tube?
  132. Kits
  133. Power supply high voltage problems with Melos amp.
  134. 811A Class A2 with Power Drive
  135. Help ID this 12AX7/EL84 Console(?) Amp
  136. Eico HF-86
  137. Marantz 9 Filter CHOKE value??
  138. 10M45s: strange behaviour @ 100mA
  139. LtSpice - Russian tube models
  140. Before I buy KT88's
  141. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  142. 300B SE amp: One more one
  143. Already found problem with new amp
  144. LtSpice transformer - confusion
  145. OPUS 5.0 A Modern Mullard
  146. EL34 PP New Design of newbie
  147. Tubelabs SE vs. Simple SE ??
  148. Somebody knows about Lorenz e84l?(real Lorenz)
  149. Aikido Heater PSU help
  150. ecc99 with which Interstage Transformer?
  151. Looking for Audio Research Caps
  152. 2A3 SE Problem
  153. One knob tone control
  154. Tube Base Application ?
  155. The no-brainer project, some questions
  156. schematic request Yarland FV34AIII
  157. SY/Pete Millett Crossover
  158. Please don't stone me. . . .
  159. Golden Tube
  160. BH Curve & OPT choices
  161. Scott Transformers
  162. Identifying transformers
  163. Need Help understanding a triode fed LTP.
  164. How to measure and adjust bias
  165. Another cheap tube amp from China
  166. where to add master volume/gain/tone to Bogen L330?
  167. Another Williamson
  168. Weird EL84 PP behavior
  169. 300B SE Design
  170. Tube/Valve Shop in BERLIN
  171. Aikido buffer/gain selector?
  172. Gaijin friendly audio shop in Tokyo area?
  173. Troubleshooting channel dropout
  174. "groundbus" is this right?
  175. About New Production Tubes
  176. suche JJ E88CC oder 6922 Sovtek in Berlin
  177. 8ohm output transformer with a 4ohm load
  178. Power transformer - good for anything?
  179. Beginner question, swap .047uf for .05uf?
  180. Tetra phono stage
  181. Japanese OPTs
  182. Changing secondary voltage (Uncivilized way)
  183. 4EH7 opinions anyone?
  184. Silvertone 45A tubes....rare variant
  185. single 12AT7 in a tubelab simple se
  186. Finished the "big one"!
  187. CV428 or 5B254M useful?
  188. How about making your own tubes?!
  189. entry level int-amp?
  190. What Cap Is This?
  191. help please with kt-88 ultralinear o/p transformer
  192. A flea thingy that sounds good
  193. Mullard vs. Williamson 60W UL PP amp. Which one?
  194. Need help with PSUD II model
  195. 5v to 2.5v for 2a3 filament
  196. Does 2A3 require a grid stopper?
  197. Hammond ECL86/6GW8 conversion
  198. Connecting two opt's to act as one.
  199. Usefullness of tubes
  200. twisted/isolated/shielded wires?
  201. Feedback question
  202. What tubes for a tube amp?
  203. SE-OPTs
  204. Phase splitting using directly heated tubes?
  205. Change EL84 from Triode to Ultra linear
  206. DC hybrid folded-cascode for Schade
  207. New UK Manufacturer of Valves
  208. Can any here explain the JHS designation?
  209. Too good to be true???
  210. Judging a tube's condition
  211. EF86 tube preamp
  212. Any tips for snap in type caps to replace solder lug cans?
  213. 6EM7 SET Headamp
  214. Are these ALL really EL34 subs?
  215. parallel tubes
  216. Changing the frequency of AC from mains to lower, out of audible range???
  217. Se 6550
  218. New Suppo Audio EL34 amp
  219. 60Watt+ valve design wanted
  220. Interesting tube on e-bay for trans atlantic cable
  221. Need help solving problem on new 2A3 build
  222. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  223. Where bay M6 lamination (M4,M2) metal for transformer
  224. dynamic pentode screen draw
  225. Tube Sockets
  226. Circuit Ideas for the 815 (martian tube)
  227. Old Tektronix unit, usefull?
  228. my transformer output has a center tap: what do I do with this?
  229. 6AV5GA amp?
  230. Phase splitter idea
  231. Lowering noise in small signal pentodes?
  232. Articles from the past
  233. Help for LTP/CCS plus cathode follower
  234. Conrad Johnson PV-5, my next project, some simple questions
  235. ALTEC 1566a (DiY...if)
  236. Friday Night Fun with a ST-70
  237. Aikido All-In-One Octal Heater Troubles
  238. transimpedance amplifier
  239. Jaehong Lee OTL
  240. What tube bases to support for a new tube curve tracer
  241. 6GE5 in driver service for class B P-P
  242. Replace Electrolytics?
  243. Can OT's couple?
  244. before i drill Simple SE Chassis Seperation of input and output
  245. gates m-3638 preamp
  246. Oversized caps (PS and coupling) in RH84: Problem?
  247. What makes a great concertina triode?
  248. Luxman SQ5A
  249. Spice model with grid current 12ax7
  250. converting a magnavox pp 6v6 in triode mode

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