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  1. Face Plate Printing and Silk Screening
  2. Funky reading 12B4A?
  3. Sovtek 5Y3 Issues
  4. from lilliput to gargantua (just for fun)
  5. Formula for calculating HT voltage?
  6. DIY Headamp for Sennheiser-650?
  7. Nuera Tube Amps
  8. Amplifier identification
  9. Perfect tube regulator
  10. Value of grid leak resistor
  11. Comments on this circuit
  12. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  13. Heater current monitoring...
  14. on-off switch position in PSU
  15. A better LDO heater regulator
  16. any feedback on Russian gas regulators like SG4S and etc.?
  17. Some cathode follower questions
  18. Anyone please explain"What is an A1,A2 in SE amp?
  19. What is the correct plate voltage in this circuit?
  20. Any1 have an Osmond PCB library for tubes?
  21. best type cap for preamp PSU
  22. Steve Bench PP loadlines
  23. Spice Error
  24. Anyone have a Welborne Labs amp?
  25. Please help out a Noobie...
  26. wellborne labs
  27. best schematic designer for tubes?
  28. hum in 1 channel
  29. B+ time delay relay
  30. something is wrong with the shunt regulator
  31. Suggestions for a high end tube amp kit
  32. Conrad Johnson PV 7 problem
  33. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  34. Please help: no sound and blown fuse
  35. sparking Output transformer In Webcor 14x240 Amp
  36. Designing my very first tube amp...
  37. Diode bridge for Valve Buffered GC
  38. 6S41S (6C41C) Amplifier
  39. audio research sp11 upgrade help please
  40. The good, the bad, and the ugly OTL amplifiers
  41. Z2b tube rectifier
  42. Sparks inside GZ34
  43. Help with EV4417 6cm5/EL36
  44. My Cornet2 Tube Phono Preamp
  45. bright switch to bias circuit?
  46. Regulated AC...thought some of you might be interested
  47. Aikido PSU - integrated or standalone???
  48. Frank Philipse's tube site
  49. World' smallest GM-70 set
  50. Question on output hum on tube amp?
  51. Aikido Preamp
  52. Argh!!
  53. EL84 bias point
  54. Coupling cap rating
  55. outstanding book??
  56. when the datasheet says "vertical mounting: up or down", does it mean...
  57. Did I get in over my head too soon?!?
  58. Parallel output tubes
  59. Dropping filament volts/ L-W ramblings
  60. Rogers Cadet III Power problem ?
  61. about bi-cap
  62. HOT Iron ?
  63. how to set current in G Pimm's latest self-biasing CCS circuit?
  64. Low pass active tube crossover
  65. Ecological recycling amplifier (6CU6)
  66. Need ECF80 / 6BL8 tube spice 3f4 model
  67. Capacitor above chassis
  68. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  69. Transmitter tubes
  70. what are the advantages of double core output transformers vs EI ?
  71. What is a reasonable amount ripple voltage for a 300B?
  72. "Old Like" sound transformer with a Tube !
  73. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  74. P-P resistance oddity
  75. Tube preamp vs. solid state
  76. 6l6 penthode triode
  77. Rising hum when turntable is plugged into preamp ??
  78. 6SL7 or 6SL7GT for broken Tubalizer
  79. Aikido PCB and AC filaments.
  80. Help with 300b proyect.
  81. 6P14P Amp Scratch Build
  82. 6GH8 - A Little Off?
  83. design and personality
  84. An all DHT push pull amp.
  85. Junk Pile Linestage
  86. need tube rectifier info
  87. Question on voltages
  88. How to change this design from penthode to triode or UL
  89. what glass-ware program?
  90. aikido 12b4 input 6sn7 output???
  91. GZ34 and temperature
  92. transmitter tube amp
  93. resistor and capacitor values for Aikido preamp
  94. need opinion on 2nd hand AF analyzers prices
  95. DH rectifier hookup.
  96. WE 310A vs. Russian 310A in WE91
  97. Question on the installation of LL1668 plate choke
  98. max plate voltage rating in tube datasheet
  99. choosing cap values for aikido
  100. Tubes in the Intermediate Stage
  101. c3m + 300b + miller capacitance
  102. How do I bias up a constant current series filament circuit?
  103. The perfect phono preamp.
  104. Got my 6BG6GA's last night
  105. Tubes4HiFi SP-6 preamp
  106. Shuguang 807s?
  107. LX-72A Sanity Check for Noooobie?
  108. Convert EL84 to 6V6? Anyone try this?
  109. PC96
  110. Ultrapath output transformers
  111. Grant RIAA phono with 12AX7/ECC83
  112. Ra-a??
  113. Help with my el509 amp almost done but with one problem.
  114. McIntosh chassis help needed
  115. Tube Voltage Regulator Design
  116. DC Tube Amplifiers
  117. Coupling cap voltage rating
  118. Anyone experienced in the 76 tube?
  119. aikido thump
  120. bypassing preamp board in integrated amp
  121. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  122. is it really required to use carbon comp for grid stoppers?
  123. How much trickle current can fixed bias cathode batteries stand?
  124. LM329 as voltage reference in a CCS.
  125. Euridice Preamp with 5842 and LL1660
  126. Trans. alignments
  127. Audio Note M3 Kit modification
  128. Has anyone simulated an "Aikido" amplifier?
  129. 6N1 Chinese tube and others
  130. 12AT7 Linestage design
  131. ECF80 instead of 7199
  132. 6922 vs 6SN7
  133. Transformer DCR's
  134. ferrite beads v. grid resistor
  135. What went wrong with my amp? Bass driver strange movement.
  136. Toccata Phono Preamp
  137. Drawbacks of Parafeed?
  138. aikido problem
  139. RS253 giant SE monoblock (Chinese)
  140. Plate chokes & Power chokes
  141. best amp for rock n roll
  142. quick question about tube relays
  143. Yeo's Simple EL84 with a twist
  144. ST-70 OPT, A-470 question
  145. meixing 805 tube amp problems
  146. Advice for NOOBie - Dad's Scott LK-72
  147. KT66 SE amp, grid current or not?
  148. How do I achieve more output power?
  149. Driver stage load resistor
  150. More Edcor XSM10K/10K Specs
  151. DC filament
  152. driver stages
  153. Bay Area DIY is Cancelled Because....
  154. Is constant filament current better way to build amps?
  155. Next amp build - Trainwreck - Princeton - Deluxe ???
  156. Quicksilver M135 Output Transformers Color Code?
  157. Dynaco ST70 clone, tubes substitution question
  158. caddocks mk132: has anyone used them for tube projects?
  159. Current rating and tube current draw
  160. PP splitters again
  161. preamp with output trannies.
  162. Is it the 6SN7 or me?
  163. Manufacture date of 6SN7s
  164. simple 12AU7 cathode follower
  165. How's your bench, what's your favorite setup/tool ?
  166. Siemens H42 AM/FM receiver circuit diagram?
  167. 429A load lines
  168. Mu-stage on output
  169. My new project, 2 x KT88 60W amp
  170. Tube Amp Hum
  171. Modding MEIXING MC 3008
  172. Will this work for an EL84 push pull?
  173. "Integrated" or "stand alone"
  174. Heater to cathode voltage limits in cascodes???
  175. some Japanese can help me? (OPT trafo winding)
  176. Quicksilver 8417 a class C amp?
  177. Newcomer, where to start?
  178. Benefits of Potted Output Transformers
  179. Transformer question
  180. 6AW6A, Unloaded
  181. Aikido PSU help
  182. Plate to Cathode Cap -- what's this??
  183. Need Help Understanding/Optimising a Schematic
  184. Simple basic question quick
  185. problem on thorens PR15 (strange filaments circuity)
  186. My 1W 5687 SE Direct Coupled Power Amp
  187. VT-25 linestage + step-down trafo
  188. What to do with 803's
  189. Newbie: KT88 amp info needed
  190. 805 tube amp, uProcessor controlled
  191. Class A Tube BJT Hybrid
  192. John Broskie's enhanced T8
  193. Audio Research SP6 E
  194. André Charlin anybody got his Tube Amp
  195. Info needed - Shuguang SG120-C Integrated Amp
  196. Help with 6SN7 preamp
  197. 12b4 vs. aikido linestage
  198. KT88/6550 as Triode
  199. 6AU6WA triode connected as a line amp?
  200. A few basic noobie questions.
  201. Which connector for PSU/chassis B+ supply?
  202. Quad II-Forty schematic ?:
  203. Audio Research Manuals
  204. I was thinking
  205. Is this OK for the Etude Preamp?
  206. gary pimm's latest self-biasing CCS circuit
  207. 46 tube pre
  208. BEZ T9B Intermittent problem
  209. Heathkit W-5M rebuild
  210. Masco MA25N repair
  211. Sunday's Project
  212. 5881- 6l6
  213. Gas-Rectifier power supply
  214. How to get more juice out of this shunt regulator
  215. Resistors on DHT Cathode
  216. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  217. Help me finish up this SET project (multiple questions / ramblings)
  218. This Is Cool !!
  219. output bias servo
  220. Looking for dual power triodes.
  221. Need advice selecting a 2A3 design
  222. Feedback basics
  223. tubalizer..
  224. The 6b4g
  225. 6N6P Operating Points
  226. Lundahl+EL84 PP+concertina+input stage
  227. Looking for circuit of SE amp. for Eimac 100TH
  228. Counterpoint Sa-3000 Circuit Diagram
  229. compressor Faiirchild 670 DIY
  230. How much headroom for a choke---to stop it from humming?
  231. Bay Area Diy Festival
  232. Using Eagle for Tubes designs
  233. Worst that could happen?
  234. Identifying output tx.
  235. Small pre
  236. Cathode follower driver
  237. comment on this B+ supply
  238. ODD TUBES, what to look for?
  239. 2A3 SE and Edcorp tranny
  240. Differential amplifier with 12AX7
  241. Bogen Challenger CH30 Amplifier
  242. do I need to use a heatsink on a DN2540 in a B+ supply?
  243. Transformer, 10K 1:1 - which one?
  244. Passive Pre-Amp causes huge power loss?
  245. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  246. Melos TM90 ST schematic?
  247. My first tube preamplifier:)
  248. Opinions on the Conrad Johnson MV75 amplifier please.
  249. Favorite Tubes
  250. SS replacement for 83 tube ?

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