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  1. Audio Note M3/4/5/6/8 schematics
  2. Lundahl LL1540 for SY's heretical?
  3. Henrys
  4. 955 Acorn tubes
  5. Do you know these Ampex mono Amps
  6. Audio Research Resistor Type
  7. What's the best low wattage guitar amp?
  8. volume issues
  9. Need advice for best CCS
  10. confusion in the resistor/capacitor values and B+ supply for the aikido
  11. What are the diferences between these ways of output?
  12. PS for tube preamp
  13. what resistors are in the aikido signal path
  14. clarification of aikido heater supply
  15. Audio Note schematics
  16. Data for PE08/40
  17. PA-060 use
  18. Anode loaded 6080 giving less than unity gain, Why??
  19. Frustration with hum and noise in guitar tube amp
  20. 3/8in thick acrylic - would this make a good chassis?
  21. 6c19p Se?
  22. CF and SRPP in one circuit . .
  23. WE417/437 with battery or RC on cathode
  24. Building a Preamp:Dual Outputs Question
  25. Audio Note Conquest?
  26. metallized caps instead of electrolytics in a tube rectifier power supply?
  27. Power transformer as Parafeed output?
  28. Bogen amp
  29. Noob question about plate load
  30. adjusting gain?
  31. Lowering HT
  32. Kaneda hybrid preamp error ?
  33. Match priorities to schematic & toobs
  34. what do you think of this integrated?
  35. Modified Audio Note M7 Tube Pre Amplifier PCB
  36. lundahl xformers - are they potted?
  37. Beginner's very simple line pre-amp
  38. UX-226 Preamp
  39. Difference between microphones
  40. sv572-30, where to find
  41. E182CC - how to connect heater supply?
  42. Aikido pre tube for Minimum Gain
  43. 14gt8...clipping diodes?
  44. HPHV regulator
  45. Grounded Grid
  46. NYAL Super-It - removing volume pots, what resistor value to replace them?
  47. Another Bogen Conversion
  48. Trouble with my "new" PAS-3 Preamp
  49. Tubalizer, Monica
  50. musical angel modified marantz 7 preamp schematics
  51. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  52. Solder directly on tube?
  53. article in NY Times on Russian tubes
  54. Sovtek's sad tale
  55. audio research LS25 preamp
  56. Schematic needed PL519 Push-Pull Ultra-Linear amp
  57. Use 6C19 in a phono amp?
  58. 6L6 Push pull -- Power tranny question
  59. INPOL technology. Duh.
  60. Transformer problem
  61. Anyone tried a hi-voltage project as their first?
  62. Schematic needed PL519 Class A SE
  63. Giaime's new toy - aka the UniOctal
  64. Critique my circuit?
  65. New EC8010-VT52 Amp
  66. EL84/6BQ5 triode pp with no cathode biasing
  67. EL34 Push Pull in Class A
  68. In search of tube audiophile in Dhaka, Bangladesh
  69. Passive preamp with utc transformers
  70. RGN rectifiers in PSUD2...
  71. Power amp harmonics ?
  72. bypass tone controls on heathkit sp-2
  73. PS Caps
  74. Doubts on cathode stripping in tubes
  75. Edcor amplifier --> 6l6 PP
  76. Welborne labs phono stage needs help, got killed in power surge last night
  77. Huge OPT and small tubes
  78. UTC technology
  79. Luxman 38FD schematic
  80. EL84 PP Diy. Pls help me!!!
  81. Wurlitzer amplifier needs help
  82. Grounding case of 6J5
  83. Tube HW question from a software guy
  84. 12AU7 tube preamplifier schema
  85. "Improved RIAA by Jax"-Power supply help needed!!!
  86. OT Overload question
  87. V76
  88. Application of 6877 ?
  89. First nos tubes
  90. Looking for tube sockets
  91. Input transformers impedance questions
  92. Hybrid amp schema?
  93. Hybrid Cascode ?
  94. Interstage topology question
  95. raccomandation with valve amps
  96. Power Transformers in Output!
  97. How do I design "SCREEN GRID DRIVE"
  98. My El34 SET
  99. Ancient Bogen 807PP Amp-Guitar
  100. Schematic needed 811a Class A2
  101. Power transformer from Tek545 'oscope
  102. Agape Audio Labs
  103. ETF06 - A century of good sound
  104. I completed my amp!
  105. Overload recovery
  106. Converting SS eq. to Tube
  107. oscillation
  108. Tube preamp with: 1V in and 15Vout???
  109. Electrolytic Cap Search
  110. Bibster's 5687 Linestage, the return
  111. Anyone know anything about Morreto amps?
  112. Determining Output Power
  113. Turn on static?
  114. Estimate power transformer current rate?
  115. Control grid Voltage / grid stoppers...
  116. Horizontal TV tubes used in amplifier?
  117. tube sterio preamp complete
  118. Cons for using instrumentation tube PS for project amp...
  119. Svetlanas site down?
  120. Calculations for new Power transformer
  121. Mullard CV4015 info?
  122. SMPS for tube amp?
  123. Pentode Push-Pull
  124. LL1660S Anomaly
  125. DIY Hybrid poweramp noise and hum problem
  126. tube questions
  127. Problems w/biasing a lC50
  128. Big Honkin Tele
  129. Tube DIY store
  130. Pronouced 300B amp Midrange
  131. Tube preamp with current mirror
  132. Transformer Coupling and Headphones? (Toob Noob)
  133. Who can explain the source of this Siemens 12AU7
  134. how does one tell when a tube is truely dead?
  135. A curious observation
  136. Help choosing capacitor value?
  137. Neon Power?
  138. The rectifier from hell, a little story.
  139. a directly heated monkey?
  140. 6l6gc SET, my first DIY
  141. SE Output Transformer Matching
  142. power tube biasing
  143. Jupiters: Tolerance: 26% over spec: o.k.?
  144. Help! 6DJ8 Tube Buffer Schematics
  145. Output Transformers for an EL84 Push-Pull Amp
  146. Advice regarding philips/mullard EL34
  147. 300b based monoblock plans
  148. need help for Marshall PCB
  149. Marshall schematic ?
  150. counterpoint Sa 5.1
  151. Help with bogen CH8
  152. where do you get those schematics / layouts?
  153. Spice 3f4 model of a low voltage direct heated signal level pentode
  154. ECC82
  155. Major diff between 12AX7 and 12AU7
  156. Voltage doubler question
  157. el34 instead of 6550
  158. Bogen CH8
  159. Ah Njoe Tjoeb 4000 problem
  160. my last project
  161. TIP50 voltage regulator
  162. Collets for 212 pins
  163. K-12M Enclosure + Upgrades. Finished!
  164. Will this work?
  165. Big tube - what is it?
  166. Help! no signal! Marshall JTM60
  167. PSU topology & regulator
  168. Dynaco from scratch
  169. 6HV5A Single Ended Amp
  170. Cheap but not too much !
  171. Quick Output Transformer Question
  172. Help with guitar tube amp mods
  173. strange thing with AMC 2030
  174. GE6072 replacement tube
  175. Counterpoint 5.1 preamp
  176. Tube library
  177. RIAA recording on CD
  178. Old SE transformer measuring?
  179. Speakers for tube amps...
  180. MF x10v3
  181. Free Tube Books.....
  182. A Transformer question
  183. 6v6 PP - No sound
  184. help with interstage needed
  185. Hum in Speakers
  186. Just another PP...
  187. Leak Stereo 20 questions
  188. 10M45 CCS, what am I doing wrong ?
  189. Various transformers
  190. tubes sound
  191. Power supply help!
  192. KR Tubes
  193. Bi-amp Between Tube, and SS
  194. 2 Tube questions,
  195. my biggest project ever , need lotsa help plz
  196. tube temperatures
  197. hh scott bias issues
  198. B+ required w/ ccs load
  199. Info re Soundtech powerone tube amp
  200. Verdier Regulated Power Supply
  201. 6DJ8/ECC88 mu-follower
  202. Tube Compressor
  203. Newbie PSU question
  204. Hickok Cardmatic tube tester cards
  205. Hashimoto SE Output Transformer
  206. Ripple and chokes
  207. Tubes driven by BJT's
  208. Red LED substitution questions
  209. Hytron big 71A
  210. Need some help for 6L6 amp
  211. 802 as an audio output tube
  212. Changing 6DJ8 SRPP stage gain
  213. Cooling In Cab / Minimum Vent Area?
  214. Tube voltage help
  215. MF XPre troubleshooting
  216. Giaime's Preamp Finished!!!
  217. Circuit and PCB Layout comments
  218. 4613 triode
  219. Help with inverter CCS+NFB
  220. Question about KT 88 integrated
  221. The Trials, and Tribulations of Bias
  222. Which components should be matched?
  223. Using PP output for SE?
  224. Tube Newbee Needing Guidance
  225. 12A/71A SET project
  226. 805 SE amplifier
  227. Playing with screen resistors
  228. Interpret this 12ax7 feedback loop
  229. Low voltage-drop CCS for LTP input stage?
  230. Tube Socket Mounting - rigid or floating
  231. SE-9 mod help please
  232. 2a3SE
  233. 20 Watt SE. I had found it.
  234. Ok to exceed Vg2 in triode? (Yes)
  235. Fender Adjustments
  236. Help needed in Bloomington IN
  237. % error for primary resistance
  238. Help Understanding Circuit (grounded grid I/V)
  239. Testing a 70.7v transformer
  240. thyratron?
  241. Tube frontend....
  242. Transformer and Choke Grounding?
  243. El509 Pse
  244. 6550 Safety Question
  245. Jadis Defy 7 : Manual
  246. Melos Ma-111b
  247. Old audio amp change
  248. Need 45 tubes
  249. Jadis Defy 7 : Manual ??
  250. Help for pre-amp and two single-ended finals

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