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  1. Looking for tube sockets
  2. Input transformers impedance questions
  3. Hybrid amp schema?
  4. Hybrid Cascode ?
  5. Interstage topology question
  6. raccomandation with valve amps
  7. Power Transformers in Output!
  8. How do I design "SCREEN GRID DRIVE"
  9. My El34 SET
  10. Schematic needed 811a Class A2
  11. Power transformer from Tek545 'oscope
  12. Agape Audio Labs
  13. ETF06 - A century of good sound
  14. I completed my amp!
  15. Overload recovery
  16. Converting SS eq. to Tube
  17. oscillation
  18. Tube preamp with: 1V in and 15Vout???
  19. Bibster's 5687 Linestage, the return
  20. Anyone know anything about Morreto amps?
  21. Determining Output Power
  22. Turn on static?
  23. Estimate power transformer current rate?
  24. Control grid Voltage / grid stoppers...
  25. Horizontal TV tubes used in amplifier?
  26. tube sterio preamp complete
  27. Cons for using instrumentation tube PS for project amp...
  28. Svetlanas site down?
  29. Calculations for new Power transformer
  30. Mullard CV4015 info?
  31. SMPS for tube amp?
  32. Pentode Push-Pull
  33. LL1660S Anomaly
  34. DIY Hybrid poweramp noise and hum problem
  35. tube questions
  36. Problems w/biasing a lC50
  37. Big Honkin Tele
  38. Tube DIY store
  39. Pronouced 300B amp Midrange
  40. Tube preamp with current mirror
  41. Transformer Coupling and Headphones? (Toob Noob)
  42. Who can explain the source of this Siemens 12AU7
  43. how does one tell when a tube is truely dead?
  44. A curious observation
  45. Help choosing capacitor value?
  46. Neon Power?
  47. The rectifier from hell, a little story.
  48. a directly heated monkey?
  49. 6l6gc SET, my first DIY
  50. SE Output Transformer Matching
  51. power tube biasing
  52. Jupiters: Tolerance: 26% over spec: o.k.?
  53. Help! 6DJ8 Tube Buffer Schematics
  54. Output Transformers for an EL84 Push-Pull Amp
  55. Advice regarding philips/mullard EL34
  56. 300b based monoblock plans
  57. counterpoint Sa 5.1
  58. Help with bogen CH8
  59. where do you get those schematics / layouts?
  60. Spice 3f4 model of a low voltage direct heated signal level pentode
  61. ECC82
  62. Major diff between 12AX7 and 12AU7
  63. el34 instead of 6550
  64. Bogen CH8
  65. Ah Njoe Tjoeb 4000 problem
  66. my last project
  67. TIP50 voltage regulator
  68. Collets for 212 pins
  69. K-12M Enclosure + Upgrades. Finished!
  70. Will this work?
  71. Big tube - what is it?
  72. PSU topology & regulator
  73. Dynaco from scratch
  74. 6HV5A Single Ended Amp
  75. Cheap but not too much !
  76. Quick Output Transformer Question
  77. strange thing with AMC 2030
  78. GE6072 replacement tube
  79. Counterpoint 5.1 preamp
  80. Tube library
  81. RIAA recording on CD
  82. Old SE transformer measuring?
  83. Speakers for tube amps...
  84. MF x10v3
  85. Free Tube Books.....
  86. A Transformer question
  87. 6v6 PP - No sound
  88. help with interstage needed
  89. Hum in Speakers
  90. Just another PP...
  91. Leak Stereo 20 questions
  92. 10M45 CCS, what am I doing wrong ?
  93. Various transformers
  94. tubes sound
  95. Power supply help!
  96. KR Tubes
  97. Bi-amp Between Tube, and SS
  98. 2 Tube questions,
  99. my biggest project ever , need lotsa help plz
  100. tube temperatures
  101. hh scott bias issues
  102. B+ required w/ ccs load
  103. Info re Soundtech powerone tube amp
  104. Verdier Regulated Power Supply
  105. 6DJ8/ECC88 mu-follower
  106. Newbie PSU question
  107. Hashimoto SE Output Transformer
  108. Ripple and chokes
  109. Tubes driven by BJT's
  110. Red LED substitution questions
  111. Hytron big 71A
  112. Need some help for 6L6 amp
  113. 802 as an audio output tube
  114. Changing 6DJ8 SRPP stage gain
  115. Cooling In Cab / Minimum Vent Area?
  116. Tube voltage help
  117. MF XPre troubleshooting
  118. Giaime's Preamp Finished!!!
  119. Circuit and PCB Layout comments
  120. 4613 triode
  121. Help with inverter CCS+NFB
  122. Question about KT 88 integrated
  123. The Trials, and Tribulations of Bias
  124. Which components should be matched?
  125. Using PP output for SE?
  126. Tube Newbee Needing Guidance
  127. 12A/71A SET project
  128. 805 SE amplifier
  129. Playing with screen resistors
  130. Interpret this 12ax7 feedback loop
  131. Low voltage-drop CCS for LTP input stage?
  132. Tube Socket Mounting - rigid or floating
  133. SE-9 mod help please
  134. 2a3SE
  135. 20 Watt SE. I had found it.
  136. Ok to exceed Vg2 in triode? (Yes)
  137. Help needed in Bloomington IN
  138. % error for primary resistance
  139. Help Understanding Circuit (grounded grid I/V)
  140. Testing a 70.7v transformer
  141. thyratron?
  142. Tube frontend....
  143. Transformer and Choke Grounding?
  144. El509 Pse
  145. 6550 Safety Question
  146. Jadis Defy 7 : Manual
  147. Melos Ma-111b
  148. Old audio amp change
  149. Need 45 tubes
  150. Jadis Defy 7 : Manual ??
  151. Help for pre-amp and two single-ended finals
  152. Schematic needed:MFA Magus B
  153. Can I remove the input caps?
  154. 807 vs. 1624 tetrode ?
  155. how to make tube amp sound layback and mellow?
  156. Standard tube filament voltages and currents
  157. SE 20W. What tube?
  158. 5687 Linestage behaving odd...
  159. SMPS & tube pre-amp development board.
  160. Question about Melody KT88 amp
  161. Trafomatic Transformer
  162. Diode trick?
  163. Return of the vacuum tube sonic hologram generator
  164. 6V6 ->EL84 with 12AT7?
  165. design for 6336A OTL amp needed
  166. Aikido sound?
  167. Valve preamp
  168. GAS VR Tubes on B+
  169. Measuring Triode-Connected Pentode Curves
  170. 6L6, 12L6 not same tube!
  171. equivilent part numbers for 6K35HF
  172. Is this a start or run cap
  173. 6V6 PP under construction - pics
  174. Is this practical
  175. Idea for a 2 tube 6080 PP amp.
  176. pls tell where to buy core of transformer
  177. 300B amp PS optimization?
  178. Different value for .47uf coupling cap
  179. Old Olympic audio tube amp
  180. What Design to Use?
  181. KT90's anyone using'em ?
  182. What are they?
  183. Replace el34 with 6p3s
  184. Advice on 6V6 push pull Parallel
  185. squealing output transformer
  186. Melos Sha Gold
  187. Ways to Lower B+ in a Tube Rectifed PS
  188. Oregon Electronics D6 HV supplies: info needed please
  189. My version of the Vacuum State FVP5
  190. Diy Tube Phono Preamp
  191. double check the math
  192. Kitparts line stage
  193. Aikido tube heater floating
  194. Cathode and other types of feedback
  195. Tube God TH-1 Amp Regulator PCB ????
  196. step-up travel transformer for small preamp?
  197. Help a total tube amp newbie find a super simple design...
  198. heretical unity gain and ccs question
  199. What To Do
  200. Parallel Two Tubes
  201. 4 x PSE EL34
  202. EL34 CCS help
  203. Single Ended EL-34?
  204. Zener Bias
  205. Looking to build a tube amp.
  206. Tube humming question
  207. YAPPAP (Yet Another Push-Pull Amplifier Project)
  208. voltage output dac ==> TUBE
  209. Heater switch transistor
  210. Anything post power transformer that can cause it to hum / buzz?
  211. Aikido enclosure
  212. Power Transformers. Decisions
  213. First tube after IV
  214. Suggestions for Upgrade - VDV70/100
  215. New Hybrid Output Stage and booster for SE Amp
  216. Pro and cons high DCR filter choke
  217. do-it yourself leslie help
  218. John Broskie Aikido boards
  219. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  220. Limited run PCBs - where's copyright???
  221. Hammond Amp Question
  222. Impedance matching
  223. 6111 output for CD player - opinions - some help?
  224. Sensitivity Limiter - Bogen Mx-30a
  225. Are my speakers efficient enough for tubes?
  226. Ping Sy: LED for Cathode Bias
  227. PSU capacitors/electrolytics
  228. 2A3 monoblock power supply
  229. 2 tube questions
  230. Just acquired HEATHKIT W4-AM-*picture*
  231. Passive line stage with tubes
  232. My favorite preamp
  233. Again, a preamp tube choice.
  234. Class Double A
  235. Two Stereo Tube Amps Into Monoblocks
  236. Espey AM/FM radio (pentagrid mixer, etc.)
  237. Need help for DIY EL34PP tube amp
  238. Higher value oil capacitors?
  239. Transconductance.
  240. 5763 tetrode on OTL ?
  241. cornford harlequin
  242. Need help: 5687 tubes and heat dissipation
  243. Tube preamp, tone control problem
  244. Use 5KV transformer as output transformer?
  245. Any EL84 alternatives?
  246. help on id of tubes
  247. Sovtek 6CA7-EH Producing smoke...
  248. building V4's and phono pre
  249. pre out on a integrated tube amp?
  250. 6SN7 some good some bad

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