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  1. safest way to power up a new build
  2. Phono amp Raytheon 6418 tubes
  3. YL1350 Help characteristic and output tranies
  4. EL84 PP using 5K plate to plate primate OPT
  5. VR tube flashing?
  6. Tabletop 12au7 Amp
  7. Renovated website: www.pmillett.com, www.tubebooks.org
  8. Troubleshooting Eico HF-85
  9. Custom chassis europe
  10. Mixer from pre-amp design
  11. SE Output Tranny - Dumb Question
  12. What Tube for a Differential Amplifier?
  13. Thinking of buying a Lumley Reference ST70 with attached passive pre
  14. Psu
  15. Protection of the Irreplaceable
  16. Trix T621 PA amplifier (British)
  17. Resistor types ??? (carbon or metal film)
  18. First Amp Build
  19. Help ID these little PP output xfrmrs?
  20. Rectifier voltage drop question
  21. dc and ac heater supply in Aikido
  22. Can I obtain a suitable B+ voltage with spare parts?
  23. Multi tap transformers dont use the whole windings?
  24. First layout with spud
  25. EL152, GU50 and EL156
  26. Convert a 110 volt Mcintosh Mc275 to 230volt
  27. transformer maker list
  28. design a preamp, so easy....
  29. SRPP - determining load and balancing
  30. Idea for all C3g phono stage
  31. temp check
  32. Pentode Question
  33. K & K Audio Transformer phase splitter?
  34. Transformer Efficiency
  35. How to test a 6H30 tube
  36. Karaoke Tube Hi-end In The Future
  37. What makes the old McIntosh stuff so good?
  38. Paralell 10M45's for 71A DHT filament?
  39. Rod Coleman CCS/gyrator help
  40. Differential amp.Do they pass 2nd harmonics or reject them?
  41. A half 6sl7 tube
  42. failing tube
  43. Capacitor in series - Resistor across ?
  44. Tube preamp choise...
  45. Some general tube questions from a Tube newbie !!
  46. How unsafe is an Autotransformer?
  47. Can a dual triode use a common cathode resistor?
  48. Dared MC-7P
  49. SRC2496 Miniatube tube output stage
  50. Tubetech smc2b multiband compressor
  51. Tweaking/correction question - Xindak MT-1 balance
  52. HELP! ELNA CERAFINE 500V Caps
  53. Em87/ em84
  54. Pioneer SM-83 restoration
  55. Best GM70 version suited for audio??
  56. PSUDII transformer question
  57. what are these caps doing?
  58. Distortion VS OPT impedence
  59. Heater wiring approaches
  60. Rogers pops, crackle and static are driving me mad!
  61. tube power enough?
  62. Ever notice those scratches on some plates??
  63. JE 45/2A3 SE 2001 edition
  64. Difficult Time Finding Replacement Caps
  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. AX84 Clean Preamp
  124. 8150 Tubes
  125. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  126. NJ Tube Auction
  127. pentode buffer
  128. Tube Buffer? 12ax7?
  129. What is this tube?
  130. Kits
  131. Power supply high voltage problems with Melos amp.
  132. 811A Class A2 with Power Drive
  133. Help ID this 12AX7/EL84 Console(?) Amp
  134. Eico HF-86
  135. Marantz 9 Filter CHOKE value??
  136. 10M45s: strange behaviour @ 100mA
  137. LtSpice - Russian tube models
  138. Before I buy KT88's
  139. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  140. adding reverb to Bassman circuit
  141. 300B SE amp: One more one
  142. Already found problem with new amp
  143. LtSpice transformer - confusion
  144. OPUS 5.0 A Modern Mullard
  145. EL34 PP New Design of newbie
  146. Tubelabs SE vs. Simple SE ??
  147. Somebody knows about Lorenz e84l?(real Lorenz)
  148. Aikido Heater PSU help
  149. ecc99 with which Interstage Transformer?
  150. Looking for Audio Research Caps
  151. 2A3 SE Problem
  152. One knob tone control
  153. Tube Base Application ?
  154. The no-brainer project, some questions
  155. schematic request Yarland FV34AIII
  156. SY/Pete Millett Crossover
  157. Please don't stone me. . . .
  158. Golden Tube
  159. BH Curve & OPT choices
  160. Scott Transformers
  161. Identifying transformers
  162. Need Help understanding a triode fed LTP.
  163. How to measure and adjust bias
  164. Another cheap tube amp from China
  165. where to add master volume/gain/tone to Bogen L330?
  166. Another Williamson
  167. Weird EL84 PP behavior
  168. 300B SE Design
  169. Tube/Valve Shop in BERLIN
  170. Aikido buffer/gain selector?
  171. Gaijin friendly audio shop in Tokyo area?
  172. Troubleshooting channel dropout
  173. "groundbus" is this right?
  174. About New Production Tubes
  175. suche JJ E88CC oder 6922 Sovtek in Berlin
  176. 8ohm output transformer with a 4ohm load
  177. Power transformer - good for anything?
  178. Beginner question, swap .047uf for .05uf?
  179. Tetra phono stage
  180. Japanese OPTs
  181. Changing secondary voltage (Uncivilized way)
  182. 4EH7 opinions anyone?
  183. Silvertone 45A tubes....rare variant
  184. single 12AT7 in a tubelab simple se
  185. Finished the "big one"!
  186. CV428 or 5B254M useful?
  187. How about making your own tubes?!
  188. entry level int-amp?
  189. What Cap Is This?
  190. help please with kt-88 ultralinear o/p transformer
  191. A flea thingy that sounds good
  192. Mullard vs. Williamson 60W UL PP amp. Which one?
  193. Need help with PSUD II model
  194. 5v to 2.5v for 2a3 filament
  195. Does 2A3 require a grid stopper?
  196. Hammond ECL86/6GW8 conversion
  197. Connecting two opt's to act as one.
  198. Usefullness of tubes
  199. twisted/isolated/shielded wires?
  200. Feedback question
  201. What tubes for a tube amp?
  202. SE-OPTs
  203. Phase splitting using directly heated tubes?
  204. Change EL84 from Triode to Ultra linear
  205. DC hybrid folded-cascode for Schade
  206. New UK Manufacturer of Valves
  207. Can any here explain the JHS designation?
  208. Too good to be true???
  209. Judging a tube's condition
  210. EF86 tube preamp
  211. Any tips for snap in type caps to replace solder lug cans?
  212. 6EM7 SET Headamp
  213. Are these ALL really EL34 subs?
  214. parallel tubes
  215. Changing the frequency of AC from mains to lower, out of audible range???
  216. Se 6550
  217. New Suppo Audio EL34 amp
  218. 60Watt+ valve design wanted
  219. Interesting tube on e-bay for trans atlantic cable
  220. Need help solving problem on new 2A3 build
  221. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  222. Peavey Classic 30 - Squeal
  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. tube upgrade for vintage orange 120
  234. Help for LTP/CCS plus cathode follower
  235. Conrad Johnson PV-5, my next project, some simple questions
  236. ALTEC 1566a (DiY...if)
  237. Friday Night Fun with a ST-70
  238. Aikido All-In-One Octal Heater Troubles
  239. Guitar tube amp OT Calculation/Winding HELP!
  240. transimpedance amplifier
  241. Jaehong Lee OTL
  242. What tube bases to support for a new tube curve tracer
  243. 6GE5 in driver service for class B P-P
  244. Replace Electrolytics?
  245. Can OT's couple?
  246. tube solid state hybrid guitar amp, looking for schematic
  247. before i drill Simple SE Chassis Seperation of input and output
  248. gates m-3638 preamp
  249. Oversized caps (PS and coupling) in RH84: Problem?
  250. What makes a great concertina triode?

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