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  1. oscillation
  2. Tube preamp with: 1V in and 15Vout???
  3. Electrolytic Cap Search
  4. Bibster's 5687 Linestage, the return
  5. Anyone know anything about Morreto amps?
  6. Determining Output Power
  7. Turn on static?
  8. Estimate power transformer current rate?
  9. Control grid Voltage / grid stoppers...
  10. Horizontal TV tubes used in amplifier?
  11. tube sterio preamp complete
  12. Cons for using instrumentation tube PS for project amp...
  13. Svetlanas site down?
  14. Calculations for new Power transformer
  15. Mullard CV4015 info?
  16. SMPS for tube amp?
  17. Pentode Push-Pull
  18. LL1660S Anomaly
  19. DIY Hybrid poweramp noise and hum problem
  20. tube questions
  21. Problems w/biasing a lC50
  22. Big Honkin Tele
  23. Tube DIY store
  24. Pronouced 300B amp Midrange
  25. Tube preamp with current mirror
  26. Transformer Coupling and Headphones? (Toob Noob)
  27. Who can explain the source of this Siemens 12AU7
  28. how does one tell when a tube is truely dead?
  29. A curious observation
  30. Help choosing capacitor value?
  31. Neon Power?
  32. The rectifier from hell, a little story.
  33. a directly heated monkey?
  34. 6l6gc SET, my first DIY
  35. SE Output Transformer Matching
  36. power tube biasing
  37. Jupiters: Tolerance: 26% over spec: o.k.?
  38. Help! 6DJ8 Tube Buffer Schematics
  39. Output Transformers for an EL84 Push-Pull Amp
  40. Advice regarding philips/mullard EL34
  41. 300b based monoblock plans
  42. need help for Marshall PCB
  43. Marshall schematic ?
  44. counterpoint Sa 5.1
  45. Help with bogen CH8
  46. where do you get those schematics / layouts?
  47. Spice 3f4 model of a low voltage direct heated signal level pentode
  48. ECC82
  49. Major diff between 12AX7 and 12AU7
  50. Voltage doubler question
  51. el34 instead of 6550
  52. Bogen CH8
  53. Ah Njoe Tjoeb 4000 problem
  54. my last project
  55. TIP50 voltage regulator
  56. Collets for 212 pins
  57. K-12M Enclosure + Upgrades. Finished!
  58. Will this work?
  59. Big tube - what is it?
  60. Help! no signal! Marshall JTM60
  61. PSU topology & regulator
  62. Dynaco from scratch
  63. 6HV5A Single Ended Amp
  64. Cheap but not too much !
  65. Quick Output Transformer Question
  66. Help with guitar tube amp mods
  67. strange thing with AMC 2030
  68. GE6072 replacement tube
  69. Counterpoint 5.1 preamp
  70. Tube library
  71. RIAA recording on CD
  72. Old SE transformer measuring?
  73. Speakers for tube amps...
  74. MF x10v3
  75. Free Tube Books.....
  76. A Transformer question
  77. 6v6 PP - No sound
  78. help with interstage needed
  79. Hum in Speakers
  80. Just another PP...
  81. Leak Stereo 20 questions
  82. 10M45 CCS, what am I doing wrong ?
  83. Various transformers
  84. tubes sound
  85. Power supply help!
  86. KR Tubes
  87. Bi-amp Between Tube, and SS
  88. 2 Tube questions,
  89. my biggest project ever , need lotsa help plz
  90. tube temperatures
  91. hh scott bias issues
  92. B+ required w/ ccs load
  93. Info re Soundtech powerone tube amp
  94. Verdier Regulated Power Supply
  95. 6DJ8/ECC88 mu-follower
  96. Tube Compressor
  97. Newbie PSU question
  98. Hickok Cardmatic tube tester cards
  99. Hashimoto SE Output Transformer
  100. Ripple and chokes
  101. Tubes driven by BJT's
  102. Red LED substitution questions
  103. Hytron big 71A
  104. Need some help for 6L6 amp
  105. 802 as an audio output tube
  106. Changing 6DJ8 SRPP stage gain
  107. Cooling In Cab / Minimum Vent Area?
  108. Tube voltage help
  109. MF XPre troubleshooting
  110. Giaime's Preamp Finished!!!
  111. Circuit and PCB Layout comments
  112. 4613 triode
  113. Help with inverter CCS+NFB
  114. Question about KT 88 integrated
  115. The Trials, and Tribulations of Bias
  116. Which components should be matched?
  117. Using PP output for SE?
  118. Tube Newbee Needing Guidance
  119. 12A/71A SET project
  120. 805 SE amplifier
  121. Playing with screen resistors
  122. Interpret this 12ax7 feedback loop
  123. Low voltage-drop CCS for LTP input stage?
  124. Tube Socket Mounting - rigid or floating
  125. SE-9 mod help please
  126. 2a3SE
  127. 20 Watt SE. I had found it.
  128. Ok to exceed Vg2 in triode? (Yes)
  129. Fender Adjustments
  130. Help needed in Bloomington IN
  131. % error for primary resistance
  132. Help Understanding Circuit (grounded grid I/V)
  133. Testing a 70.7v transformer
  134. thyratron?
  135. Tube frontend....
  136. Transformer and Choke Grounding?
  137. El509 Pse
  138. 6550 Safety Question
  139. Jadis Defy 7 : Manual
  140. Melos Ma-111b
  141. Old audio amp change
  142. Need 45 tubes
  143. Jadis Defy 7 : Manual ??
  144. Help for pre-amp and two single-ended finals
  145. Schematic needed:MFA Magus B
  146. Can I remove the input caps?
  147. 807 vs. 1624 tetrode ?
  148. how to make tube amp sound layback and mellow?
  149. Standard tube filament voltages and currents
  150. SE 20W. What tube?
  151. 5687 Linestage behaving odd...
  152. SMPS & tube pre-amp development board.
  153. Question about Melody KT88 amp
  154. Trafomatic Transformer
  155. Diode trick?
  156. Return of the vacuum tube sonic hologram generator
  157. 6V6 ->EL84 with 12AT7?
  158. design for 6336A OTL amp needed
  159. Aikido sound?
  160. Valve preamp
  161. GAS VR Tubes on B+
  162. Measuring Triode-Connected Pentode Curves
  163. 6L6, 12L6 not same tube!
  164. equivilent part numbers for 6K35HF
  165. Is this a start or run cap
  166. 6V6 PP under construction - pics
  167. Is this practical
  168. Idea for a 2 tube 6080 PP amp.
  169. pls tell where to buy core of transformer
  170. 300B amp PS optimization?
  171. Different value for .47uf coupling cap
  172. Old Olympic audio tube amp
  173. What Design to Use?
  174. KT90's anyone using'em ?
  175. What are they?
  176. Replace el34 with 6p3s
  177. Advice on 6V6 push pull Parallel
  178. squealing output transformer
  179. Melos Sha Gold
  180. Ways to Lower B+ in a Tube Rectifed PS
  181. Oregon Electronics D6 HV supplies: info needed please
  182. My version of the Vacuum State FVP5
  183. Diy Tube Phono Preamp
  184. double check the math
  185. Kitparts line stage
  186. Aikido tube heater floating
  187. Cathode and other types of feedback
  188. Tube God TH-1 Amp Regulator PCB ????
  189. step-up travel transformer for small preamp?
  190. Help a total tube amp newbie find a super simple design...
  191. heretical unity gain and ccs question
  192. Vox tubes glowing red hot
  193. What To Do
  194. Parallel Two Tubes
  195. 4 x PSE EL34
  196. EL34 CCS help
  197. Tube curve tracer project
  198. Single Ended EL-34?
  199. maxi tube tester?
  200. Zener Bias
  201. Looking to build a tube amp.
  202. Tube humming question
  203. YAPPAP (Yet Another Push-Pull Amplifier Project)
  204. voltage output dac ==> TUBE
  205. Heater switch transistor
  206. Anything post power transformer that can cause it to hum / buzz?
  207. Aikido enclosure
  208. Power Transformers. Decisions
  209. First tube after IV
  210. Suggestions for Upgrade - VDV70/100
  211. New Hybrid Output Stage and booster for SE Amp
  212. Pro and cons high DCR filter choke
  213. do-it yourself leslie help
  214. John Broskie Aikido boards
  215. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  216. Limited run PCBs - where's copyright???
  217. Hammond Amp Question
  218. Impedance matching
  219. 6111 output for CD player - opinions - some help?
  220. Sensitivity Limiter - Bogen Mx-30a
  221. Are my speakers efficient enough for tubes?
  222. Ping Sy: LED for Cathode Bias
  223. PSU capacitors/electrolytics
  224. 2A3 monoblock power supply
  225. 2 tube questions
  226. Just acquired HEATHKIT W4-AM-*picture*
  227. Passive line stage with tubes
  228. My favorite preamp
  229. Again, a preamp tube choice.
  230. Class Double A
  231. Two Stereo Tube Amps Into Monoblocks
  232. Multi-purpose tube amp (line and guitar inputs)
  233. Espey AM/FM radio (pentagrid mixer, etc.)
  234. Need help for DIY EL34PP tube amp
  235. Higher value oil capacitors?
  236. Transconductance.
  237. 5763 tetrode on OTL ?
  238. cornford harlequin
  239. Need help: 5687 tubes and heat dissipation
  240. Tube preamp, tone control problem
  241. Use 5KV transformer as output transformer?
  242. Any EL84 alternatives?
  243. help on id of tubes
  244. Sovtek 6CA7-EH Producing smoke...
  245. building V4's and phono pre
  246. pre out on a integrated tube amp?
  247. 6SN7 some good some bad
  248. Phono pre amp - thanks SY
  249. 6c33c Tube preamp
  250. Tubes for Lumley ST40 power amplifier?

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