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

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