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  1. Match priorities to schematic & toobs
  2. what do you think of this integrated?
  3. Modified Audio Note M7 Tube Pre Amplifier PCB
  4. lundahl xformers - are they potted?
  5. Beginner's very simple line pre-amp
  6. UX-226 Preamp
  7. Difference between microphones
  8. sv572-30, where to find
  9. E182CC - how to connect heater supply?
  10. Aikido pre tube for Minimum Gain
  11. 14gt8...clipping diodes?
  12. HPHV regulator
  13. Grounded Grid
  14. NYAL Super-It - removing volume pots, what resistor value to replace them?
  15. Another Bogen Conversion
  16. Trouble with my "new" PAS-3 Preamp
  17. Tubalizer, Monica
  18. musical angel modified marantz 7 preamp schematics
  19. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  20. Solder directly on tube?
  21. article in NY Times on Russian tubes
  22. Sovtek's sad tale
  23. audio research LS25 preamp
  24. Schematic needed PL519 Push-Pull Ultra-Linear amp
  25. Use 6C19 in a phono amp?
  26. 6L6 Push pull -- Power tranny question
  27. INPOL technology. Duh.
  28. Transformer problem
  29. Anyone tried a hi-voltage project as their first?
  30. Schematic needed PL519 Class A SE
  31. Giaime's new toy - aka the UniOctal
  32. Critique my circuit?
  33. New EC8010-VT52 Amp
  34. EL84/6BQ5 triode pp with no cathode biasing
  35. EL34 Push Pull in Class A
  36. In search of tube audiophile in Dhaka, Bangladesh
  37. Passive preamp with utc transformers
  38. RGN rectifiers in PSUD2...
  39. Power amp harmonics ?
  40. bypass tone controls on heathkit sp-2
  41. PS Caps
  42. Doubts on cathode stripping in tubes
  43. Edcor amplifier --> 6l6 PP
  44. Welborne labs phono stage needs help, got killed in power surge last night
  45. Huge OPT and small tubes
  46. UTC technology
  47. Luxman 38FD schematic
  48. EL84 PP Diy. Pls help me!!!
  49. Wurlitzer amplifier needs help
  50. Grounding case of 6J5
  51. Tube HW question from a software guy
  52. 12AU7 tube preamplifier schema
  53. "Improved RIAA by Jax"-Power supply help needed!!!
  54. OT Overload question
  55. V76
  56. Application of 6877 ?
  57. First nos tubes
  58. Looking for tube sockets
  59. Input transformers impedance questions
  60. Hybrid amp schema?
  61. Hybrid Cascode ?
  62. Interstage topology question
  63. raccomandation with valve amps
  64. Power Transformers in Output!
  65. How do I design "SCREEN GRID DRIVE"
  66. My El34 SET
  67. Ancient Bogen 807PP Amp-Guitar
  68. Schematic needed 811a Class A2
  69. Power transformer from Tek545 'oscope
  70. Agape Audio Labs
  71. ETF06 - A century of good sound
  72. I completed my amp!
  73. Overload recovery
  74. Converting SS eq. to Tube
  75. oscillation
  76. Tube preamp with: 1V in and 15Vout???
  77. Electrolytic Cap Search
  78. Bibster's 5687 Linestage, the return
  79. Anyone know anything about Morreto amps?
  80. Determining Output Power
  81. Turn on static?
  82. Estimate power transformer current rate?
  83. Control grid Voltage / grid stoppers...
  84. Horizontal TV tubes used in amplifier?
  85. tube sterio preamp complete
  86. Cons for using instrumentation tube PS for project amp...
  87. Svetlanas site down?
  88. Calculations for new Power transformer
  89. Mullard CV4015 info?
  90. SMPS for tube amp?
  91. Pentode Push-Pull
  92. LL1660S Anomaly
  93. DIY Hybrid poweramp noise and hum problem
  94. tube questions
  95. Problems w/biasing a lC50
  96. Big Honkin Tele
  97. Tube DIY store
  98. Pronouced 300B amp Midrange
  99. Tube preamp with current mirror
  100. Transformer Coupling and Headphones? (Toob Noob)
  101. Who can explain the source of this Siemens 12AU7
  102. how does one tell when a tube is truely dead?
  103. A curious observation
  104. Help choosing capacitor value?
  105. Neon Power?
  106. The rectifier from hell, a little story.
  107. a directly heated monkey?
  108. 6l6gc SET, my first DIY
  109. SE Output Transformer Matching
  110. power tube biasing
  111. Jupiters: Tolerance: 26% over spec: o.k.?
  112. Help! 6DJ8 Tube Buffer Schematics
  113. Output Transformers for an EL84 Push-Pull Amp
  114. Advice regarding philips/mullard EL34
  115. 300b based monoblock plans
  116. need help for Marshall PCB
  117. Marshall schematic ?
  118. counterpoint Sa 5.1
  119. Help with bogen CH8
  120. where do you get those schematics / layouts?
  121. Spice 3f4 model of a low voltage direct heated signal level pentode
  122. ECC82
  123. Major diff between 12AX7 and 12AU7
  124. Voltage doubler question
  125. el34 instead of 6550
  126. Bogen CH8
  127. Ah Njoe Tjoeb 4000 problem
  128. my last project
  129. TIP50 voltage regulator
  130. Collets for 212 pins
  131. K-12M Enclosure + Upgrades. Finished!
  132. Will this work?
  133. Big tube - what is it?
  134. Help! no signal! Marshall JTM60
  135. PSU topology & regulator
  136. Dynaco from scratch
  137. 6HV5A Single Ended Amp
  138. Cheap but not too much !
  139. Quick Output Transformer Question
  140. Help with guitar tube amp mods
  141. strange thing with AMC 2030
  142. GE6072 replacement tube
  143. Counterpoint 5.1 preamp
  144. Tube library
  145. RIAA recording on CD
  146. Old SE transformer measuring?
  147. Speakers for tube amps...
  148. MF x10v3
  149. Free Tube Books.....
  150. A Transformer question
  151. 6v6 PP - No sound
  152. help with interstage needed
  153. Hum in Speakers
  154. Just another PP...
  155. Leak Stereo 20 questions
  156. 10M45 CCS, what am I doing wrong ?
  157. Various transformers
  158. tubes sound
  159. Power supply help!
  160. KR Tubes
  161. Bi-amp Between Tube, and SS
  162. 2 Tube questions,
  163. my biggest project ever , need lotsa help plz
  164. tube temperatures
  165. hh scott bias issues
  166. B+ required w/ ccs load
  167. Info re Soundtech powerone tube amp
  168. Verdier Regulated Power Supply
  169. 6DJ8/ECC88 mu-follower
  170. Tube Compressor
  171. Newbie PSU question
  172. Hickok Cardmatic tube tester cards
  173. Hashimoto SE Output Transformer
  174. Ripple and chokes
  175. Tubes driven by BJT's
  176. Red LED substitution questions
  177. Hytron big 71A
  178. Need some help for 6L6 amp
  179. 802 as an audio output tube
  180. Changing 6DJ8 SRPP stage gain
  181. Cooling In Cab / Minimum Vent Area?
  182. Tube voltage help
  183. MF XPre troubleshooting
  184. Giaime's Preamp Finished!!!
  185. Circuit and PCB Layout comments
  186. 4613 triode
  187. Help with inverter CCS+NFB
  188. Question about KT 88 integrated
  189. The Trials, and Tribulations of Bias
  190. Which components should be matched?
  191. Using PP output for SE?
  192. Tube Newbee Needing Guidance
  193. 12A/71A SET project
  194. 805 SE amplifier
  195. Playing with screen resistors
  196. Interpret this 12ax7 feedback loop
  197. Low voltage-drop CCS for LTP input stage?
  198. Tube Socket Mounting - rigid or floating
  199. SE-9 mod help please
  200. 2a3SE
  201. 20 Watt SE. I had found it.
  202. Ok to exceed Vg2 in triode? (Yes)
  203. Fender Adjustments
  204. Help needed in Bloomington IN
  205. % error for primary resistance
  206. Help Understanding Circuit (grounded grid I/V)
  207. Testing a 70.7v transformer
  208. thyratron?
  209. Tube frontend....
  210. Transformer and Choke Grounding?
  211. El509 Pse
  212. 6550 Safety Question
  213. Jadis Defy 7 : Manual
  214. Melos Ma-111b
  215. Old audio amp change
  216. Need 45 tubes
  217. Jadis Defy 7 : Manual ??
  218. Help for pre-amp and two single-ended finals
  219. Schematic needed:MFA Magus B
  220. Can I remove the input caps?
  221. 807 vs. 1624 tetrode ?
  222. how to make tube amp sound layback and mellow?
  223. Standard tube filament voltages and currents
  224. SE 20W. What tube?
  225. 5687 Linestage behaving odd...
  226. SMPS & tube pre-amp development board.
  227. Question about Melody KT88 amp
  228. Trafomatic Transformer
  229. Diode trick?
  230. Return of the vacuum tube sonic hologram generator
  231. 6V6 ->EL84 with 12AT7?
  232. design for 6336A OTL amp needed
  233. Aikido sound?
  234. Valve preamp
  235. GAS VR Tubes on B+
  236. Measuring Triode-Connected Pentode Curves
  237. 6L6, 12L6 not same tube!
  238. equivilent part numbers for 6K35HF
  239. Is this a start or run cap
  240. 6V6 PP under construction - pics
  241. Is this practical
  242. Idea for a 2 tube 6080 PP amp.
  243. pls tell where to buy core of transformer
  244. 300B amp PS optimization?
  245. Different value for .47uf coupling cap
  246. Old Olympic audio tube amp
  247. What Design to Use?
  248. KT90's anyone using'em ?
  249. What are they?
  250. Replace el34 with 6p3s

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