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  1. Aikido pre tube for Minimum Gain
  2. 14gt8...clipping diodes?
  3. HPHV regulator
  4. Grounded Grid
  5. NYAL Super-It - removing volume pots, what resistor value to replace them?
  6. Another Bogen Conversion
  7. Trouble with my "new" PAS-3 Preamp
  8. Tubalizer, Monica
  9. musical angel modified marantz 7 preamp schematics
  10. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  11. Solder directly on tube?
  12. article in NY Times on Russian tubes
  13. Sovtek's sad tale
  14. audio research LS25 preamp
  15. Schematic needed PL519 Push-Pull Ultra-Linear amp
  16. Use 6C19 in a phono amp?
  17. 6L6 Push pull -- Power tranny question
  18. INPOL technology. Duh.
  19. Transformer problem
  20. Anyone tried a hi-voltage project as their first?
  21. Schematic needed PL519 Class A SE
  22. Giaime's new toy - aka the UniOctal
  23. Critique my circuit?
  24. New EC8010-VT52 Amp
  25. EL84/6BQ5 triode pp with no cathode biasing
  26. EL34 Push Pull in Class A
  27. In search of tube audiophile in Dhaka, Bangladesh
  28. Passive preamp with utc transformers
  29. RGN rectifiers in PSUD2...
  30. Power amp harmonics ?
  31. bypass tone controls on heathkit sp-2
  32. PS Caps
  33. Doubts on cathode stripping in tubes
  34. Edcor amplifier --> 6l6 PP
  35. Welborne labs phono stage needs help, got killed in power surge last night
  36. Huge OPT and small tubes
  37. UTC technology
  38. Luxman 38FD schematic
  39. EL84 PP Diy. Pls help me!!!
  40. Wurlitzer amplifier needs help
  41. Grounding case of 6J5
  42. Tube HW question from a software guy
  43. 12AU7 tube preamplifier schema
  44. "Improved RIAA by Jax"-Power supply help needed!!!
  45. OT Overload question
  46. V76
  47. Application of 6877 ?
  48. First nos tubes
  49. Looking for tube sockets
  50. Input transformers impedance questions
  51. Hybrid amp schema?
  52. Hybrid Cascode ?
  53. Interstage topology question
  54. raccomandation with valve amps
  55. Power Transformers in Output!
  56. How do I design "SCREEN GRID DRIVE"
  57. My El34 SET
  58. Ancient Bogen 807PP Amp-Guitar
  59. Schematic needed 811a Class A2
  60. Power transformer from Tek545 'oscope
  61. Agape Audio Labs
  62. ETF06 - A century of good sound
  63. I completed my amp!
  64. Overload recovery
  65. Converting SS eq. to Tube
  66. oscillation
  67. Tube preamp with: 1V in and 15Vout???
  68. Electrolytic Cap Search
  69. Bibster's 5687 Linestage, the return
  70. Anyone know anything about Morreto amps?
  71. Determining Output Power
  72. Turn on static?
  73. Estimate power transformer current rate?
  74. Control grid Voltage / grid stoppers...
  75. Horizontal TV tubes used in amplifier?
  76. tube sterio preamp complete
  77. Cons for using instrumentation tube PS for project amp...
  78. Svetlanas site down?
  79. Calculations for new Power transformer
  80. Mullard CV4015 info?
  81. SMPS for tube amp?
  82. Pentode Push-Pull
  83. LL1660S Anomaly
  84. DIY Hybrid poweramp noise and hum problem
  85. tube questions
  86. Problems w/biasing a lC50
  87. Big Honkin Tele
  88. Tube DIY store
  89. Pronouced 300B amp Midrange
  90. Tube preamp with current mirror
  91. Transformer Coupling and Headphones? (Toob Noob)
  92. Who can explain the source of this Siemens 12AU7
  93. how does one tell when a tube is truely dead?
  94. A curious observation
  95. Help choosing capacitor value?
  96. Neon Power?
  97. The rectifier from hell, a little story.
  98. a directly heated monkey?
  99. 6l6gc SET, my first DIY
  100. SE Output Transformer Matching
  101. power tube biasing
  102. Jupiters: Tolerance: 26% over spec: o.k.?
  103. Help! 6DJ8 Tube Buffer Schematics
  104. Output Transformers for an EL84 Push-Pull Amp
  105. Advice regarding philips/mullard EL34
  106. 300b based monoblock plans
  107. need help for Marshall PCB
  108. Marshall schematic ?
  109. counterpoint Sa 5.1
  110. Help with bogen CH8
  111. where do you get those schematics / layouts?
  112. Spice 3f4 model of a low voltage direct heated signal level pentode
  113. ECC82
  114. Major diff between 12AX7 and 12AU7
  115. Voltage doubler question
  116. el34 instead of 6550
  117. Bogen CH8
  118. Ah Njoe Tjoeb 4000 problem
  119. my last project
  120. TIP50 voltage regulator
  121. Collets for 212 pins
  122. K-12M Enclosure + Upgrades. Finished!
  123. Will this work?
  124. Big tube - what is it?
  125. Help! no signal! Marshall JTM60
  126. PSU topology & regulator
  127. Dynaco from scratch
  128. 6HV5A Single Ended Amp
  129. Cheap but not too much !
  130. Quick Output Transformer Question
  131. Help with guitar tube amp mods
  132. strange thing with AMC 2030
  133. GE6072 replacement tube
  134. Counterpoint 5.1 preamp
  135. Tube library
  136. RIAA recording on CD
  137. Old SE transformer measuring?
  138. Speakers for tube amps...
  139. MF x10v3
  140. Free Tube Books.....
  141. A Transformer question
  142. 6v6 PP - No sound
  143. help with interstage needed
  144. Hum in Speakers
  145. Just another PP...
  146. Leak Stereo 20 questions
  147. 10M45 CCS, what am I doing wrong ?
  148. Various transformers
  149. tubes sound
  150. Power supply help!
  151. KR Tubes
  152. Bi-amp Between Tube, and SS
  153. 2 Tube questions,
  154. my biggest project ever , need lotsa help plz
  155. tube temperatures
  156. hh scott bias issues
  157. B+ required w/ ccs load
  158. Info re Soundtech powerone tube amp
  159. Verdier Regulated Power Supply
  160. 6DJ8/ECC88 mu-follower
  161. Tube Compressor
  162. Newbie PSU question
  163. Hickok Cardmatic tube tester cards
  164. Hashimoto SE Output Transformer
  165. Ripple and chokes
  166. Tubes driven by BJT's
  167. Red LED substitution questions
  168. Hytron big 71A
  169. Need some help for 6L6 amp
  170. 802 as an audio output tube
  171. Changing 6DJ8 SRPP stage gain
  172. Cooling In Cab / Minimum Vent Area?
  173. Tube voltage help
  174. MF XPre troubleshooting
  175. Giaime's Preamp Finished!!!
  176. Circuit and PCB Layout comments
  177. 4613 triode
  178. Help with inverter CCS+NFB
  179. Question about KT 88 integrated
  180. The Trials, and Tribulations of Bias
  181. Which components should be matched?
  182. Using PP output for SE?
  183. Tube Newbee Needing Guidance
  184. 12A/71A SET project
  185. 805 SE amplifier
  186. Playing with screen resistors
  187. Interpret this 12ax7 feedback loop
  188. Low voltage-drop CCS for LTP input stage?
  189. Tube Socket Mounting - rigid or floating
  190. SE-9 mod help please
  191. 2a3SE
  192. 20 Watt SE. I had found it.
  193. Ok to exceed Vg2 in triode? (Yes)
  194. Fender Adjustments
  195. Help needed in Bloomington IN
  196. % error for primary resistance
  197. Help Understanding Circuit (grounded grid I/V)
  198. Testing a 70.7v transformer
  199. thyratron?
  200. Tube frontend....
  201. Transformer and Choke Grounding?
  202. El509 Pse
  203. 6550 Safety Question
  204. Jadis Defy 7 : Manual
  205. Melos Ma-111b
  206. Old audio amp change
  207. Need 45 tubes
  208. Jadis Defy 7 : Manual ??
  209. Help for pre-amp and two single-ended finals
  210. Schematic needed:MFA Magus B
  211. Can I remove the input caps?
  212. 807 vs. 1624 tetrode ?
  213. how to make tube amp sound layback and mellow?
  214. Standard tube filament voltages and currents
  215. SE 20W. What tube?
  216. 5687 Linestage behaving odd...
  217. SMPS & tube pre-amp development board.
  218. Question about Melody KT88 amp
  219. Trafomatic Transformer
  220. Diode trick?
  221. Return of the vacuum tube sonic hologram generator
  222. 6V6 ->EL84 with 12AT7?
  223. design for 6336A OTL amp needed
  224. Aikido sound?
  225. Valve preamp
  226. GAS VR Tubes on B+
  227. Measuring Triode-Connected Pentode Curves
  228. 6L6, 12L6 not same tube!
  229. equivilent part numbers for 6K35HF
  230. Is this a start or run cap
  231. 6V6 PP under construction - pics
  232. Is this practical
  233. Idea for a 2 tube 6080 PP amp.
  234. pls tell where to buy core of transformer
  235. 300B amp PS optimization?
  236. Different value for .47uf coupling cap
  237. Old Olympic audio tube amp
  238. What Design to Use?
  239. KT90's anyone using'em ?
  240. What are they?
  241. Replace el34 with 6p3s
  242. Advice on 6V6 push pull Parallel
  243. squealing output transformer
  244. Melos Sha Gold
  245. Ways to Lower B+ in a Tube Rectifed PS
  246. Oregon Electronics D6 HV supplies: info needed please
  247. My version of the Vacuum State FVP5
  248. Diy Tube Phono Preamp
  249. double check the math
  250. Kitparts line stage

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