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  1. Help on PP EL 34 from Claus Byrith
  2. Datasheet of PTT4 tube?
  3. ready to give up
  4. O-Ring sizes for Tube Dampers
  5. preamp /amp combination question
  6. Strange Transformer Question.....
  7. Audio Note M3/4/5/6/8 schematics
  8. Lundahl LL1540 for SY's heretical?
  9. Henrys
  10. 955 Acorn tubes
  11. Do you know these Ampex mono Amps
  12. Audio Research Resistor Type
  13. volume issues
  14. Need advice for best CCS
  15. confusion in the resistor/capacitor values and B+ supply for the aikido
  16. What are the diferences between these ways of output?
  17. PS for tube preamp
  18. what resistors are in the aikido signal path
  19. clarification of aikido heater supply
  20. Audio Note schematics
  21. Data for PE08/40
  22. PA-060 use
  23. Anode loaded 6080 giving less than unity gain, Why??
  24. 3/8in thick acrylic - would this make a good chassis?
  25. 6c19p Se?
  26. CF and SRPP in one circuit . .
  27. WE417/437 with battery or RC on cathode
  28. Building a Preamp:Dual Outputs Question
  29. Audio Note Conquest?
  30. Power transformer as Parafeed output?
  31. Bogen amp
  32. Noob question about plate load
  33. adjusting gain?
  34. Lowering HT
  35. Kaneda hybrid preamp error ?
  36. Match priorities to schematic & toobs
  37. what do you think of this integrated?
  38. Modified Audio Note M7 Tube Pre Amplifier PCB
  39. lundahl xformers - are they potted?
  40. Beginner's very simple line pre-amp
  41. UX-226 Preamp
  42. Difference between microphones
  43. sv572-30, where to find
  44. E182CC - how to connect heater supply?
  45. Aikido pre tube for Minimum Gain
  46. 14gt8...clipping diodes?
  47. HPHV regulator
  48. Grounded Grid
  49. NYAL Super-It - removing volume pots, what resistor value to replace them?
  50. Another Bogen Conversion
  51. Trouble with my "new" PAS-3 Preamp
  52. Tubalizer, Monica
  53. musical angel modified marantz 7 preamp schematics
  54. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  55. Solder directly on tube?
  56. article in NY Times on Russian tubes
  57. Sovtek's sad tale
  58. audio research LS25 preamp
  59. Schematic needed PL519 Push-Pull Ultra-Linear amp
  60. Use 6C19 in a phono amp?
  61. 6L6 Push pull -- Power tranny question
  62. INPOL technology. Duh.
  63. Transformer problem
  64. Anyone tried a hi-voltage project as their first?
  65. Schematic needed PL519 Class A SE
  66. Giaime's new toy - aka the UniOctal
  67. Critique my circuit?
  68. New EC8010-VT52 Amp
  69. EL84/6BQ5 triode pp with no cathode biasing
  70. EL34 Push Pull in Class A
  71. In search of tube audiophile in Dhaka, Bangladesh
  72. Passive preamp with utc transformers
  73. RGN rectifiers in PSUD2...
  74. Power amp harmonics ?
  75. bypass tone controls on heathkit sp-2
  76. Doubts on cathode stripping in tubes
  77. Edcor amplifier --> 6l6 PP
  78. Welborne labs phono stage needs help, got killed in power surge last night
  79. Huge OPT and small tubes
  80. UTC technology
  81. Luxman 38FD schematic
  82. EL84 PP Diy. Pls help me!!!
  83. Grounding case of 6J5
  84. Tube HW question from a software guy
  85. 12AU7 tube preamplifier schema
  86. "Improved RIAA by Jax"-Power supply help needed!!!
  87. OT Overload question
  88. V76
  89. Application of 6877 ?
  90. First nos tubes
  91. Looking for tube sockets
  92. Input transformers impedance questions
  93. Hybrid amp schema?
  94. Hybrid Cascode ?
  95. Interstage topology question
  96. raccomandation with valve amps
  97. Power Transformers in Output!
  98. How do I design "SCREEN GRID DRIVE"
  99. My El34 SET
  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. Bibster's 5687 Linestage, the return
  110. Anyone know anything about Morreto amps?
  111. Determining Output Power
  112. Turn on static?
  113. Estimate power transformer current rate?
  114. Control grid Voltage / grid stoppers...
  115. Horizontal TV tubes used in amplifier?
  116. tube sterio preamp complete
  117. Cons for using instrumentation tube PS for project amp...
  118. Svetlanas site down?
  119. Calculations for new Power transformer
  120. Mullard CV4015 info?
  121. SMPS for tube amp?
  122. Pentode Push-Pull
  123. LL1660S Anomaly
  124. DIY Hybrid poweramp noise and hum problem
  125. tube questions
  126. Problems w/biasing a lC50
  127. Big Honkin Tele
  128. Tube DIY store
  129. Pronouced 300B amp Midrange
  130. Tube preamp with current mirror
  131. Transformer Coupling and Headphones? (Toob Noob)
  132. Who can explain the source of this Siemens 12AU7
  133. how does one tell when a tube is truely dead?
  134. A curious observation
  135. Help choosing capacitor value?
  136. Neon Power?
  137. The rectifier from hell, a little story.
  138. a directly heated monkey?
  139. 6l6gc SET, my first DIY
  140. SE Output Transformer Matching
  141. power tube biasing
  142. Jupiters: Tolerance: 26% over spec: o.k.?
  143. Help! 6DJ8 Tube Buffer Schematics
  144. Output Transformers for an EL84 Push-Pull Amp
  145. Advice regarding philips/mullard EL34
  146. 300b based monoblock plans
  147. counterpoint Sa 5.1
  148. Help with bogen CH8
  149. where do you get those schematics / layouts?
  150. Spice 3f4 model of a low voltage direct heated signal level pentode
  151. ECC82
  152. Major diff between 12AX7 and 12AU7
  153. el34 instead of 6550
  154. Bogen CH8
  155. Ah Njoe Tjoeb 4000 problem
  156. my last project
  157. TIP50 voltage regulator
  158. Collets for 212 pins
  159. K-12M Enclosure + Upgrades. Finished!
  160. Will this work?
  161. Big tube - what is it?
  162. PSU topology & regulator
  163. Dynaco from scratch
  164. 6HV5A Single Ended Amp
  165. Cheap but not too much !
  166. Quick Output Transformer Question
  167. strange thing with AMC 2030
  168. GE6072 replacement tube
  169. Counterpoint 5.1 preamp
  170. Tube library
  171. RIAA recording on CD
  172. Old SE transformer measuring?
  173. Speakers for tube amps...
  174. MF x10v3
  175. Free Tube Books.....
  176. A Transformer question
  177. 6v6 PP - No sound
  178. help with interstage needed
  179. Hum in Speakers
  180. Just another PP...
  181. Leak Stereo 20 questions
  182. 10M45 CCS, what am I doing wrong ?
  183. Various transformers
  184. tubes sound
  185. Power supply help!
  186. KR Tubes
  187. Bi-amp Between Tube, and SS
  188. 2 Tube questions,
  189. my biggest project ever , need lotsa help plz
  190. tube temperatures
  191. hh scott bias issues
  192. B+ required w/ ccs load
  193. Info re Soundtech powerone tube amp
  194. Verdier Regulated Power Supply
  195. 6DJ8/ECC88 mu-follower
  196. Tube Compressor
  197. Newbie PSU question
  198. Hickok Cardmatic tube tester cards
  199. Hashimoto SE Output Transformer
  200. Ripple and chokes
  201. Tubes driven by BJT's
  202. Red LED substitution questions
  203. Hytron big 71A
  204. Need some help for 6L6 amp
  205. 802 as an audio output tube
  206. Changing 6DJ8 SRPP stage gain
  207. Cooling In Cab / Minimum Vent Area?
  208. Tube voltage help
  209. MF XPre troubleshooting
  210. Giaime's Preamp Finished!!!
  211. Circuit and PCB Layout comments
  212. 4613 triode
  213. Help with inverter CCS+NFB
  214. Question about KT 88 integrated
  215. The Trials, and Tribulations of Bias
  216. Which components should be matched?
  217. Using PP output for SE?
  218. Tube Newbee Needing Guidance
  219. 12A/71A SET project
  220. 805 SE amplifier
  221. Playing with screen resistors
  222. Interpret this 12ax7 feedback loop
  223. Low voltage-drop CCS for LTP input stage?
  224. Tube Socket Mounting - rigid or floating
  225. SE-9 mod help please
  226. 2a3SE
  227. 20 Watt SE. I had found it.
  228. Ok to exceed Vg2 in triode? (Yes)
  229. Help needed in Bloomington IN
  230. % error for primary resistance
  231. Help Understanding Circuit (grounded grid I/V)
  232. Testing a 70.7v transformer
  233. thyratron?
  234. Tube frontend....
  235. Transformer and Choke Grounding?
  236. El509 Pse
  237. 6550 Safety Question
  238. Jadis Defy 7 : Manual
  239. Melos Ma-111b
  240. Old audio amp change
  241. Need 45 tubes
  242. Jadis Defy 7 : Manual ??
  243. Help for pre-amp and two single-ended finals
  244. Schematic needed:MFA Magus B
  245. Can I remove the input caps?
  246. 807 vs. 1624 tetrode ?
  247. how to make tube amp sound layback and mellow?
  248. Standard tube filament voltages and currents
  249. SE 20W. What tube?
  250. 5687 Linestage behaving odd...

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