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  1. Hybrid voltage doubler using tube and diode
  2. Finally finished my first tube amp!
  3. advice on an EL84 Push pull Amp schematic
  4. Vintage radio
  5. Look for 12AU7 Preamp Circuit .
  6. PSU question? Going tube rectified
  7. PSU Rebuild Help Pleas
  8. Screeching tubes
  9. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  10. Fisher 800 restoration
  11. stern's ecl86 amp
  12. Look for Western Electric KS-16547-L1 circuit diagram
  13. Help about grommes 500C
  14. Dynaco MK III with 6146A tubes.
  15. Volume pot for Musical Fidelity F22 pre amp.
  16. Don't you just hate it when
  17. Bogen 8417 tube conversion..?
  18. How to Build Unbilical from PS to Phono
  19. Class A SET preamp, help
  20. Grounding MFA Luminescence
  21. custom transformer manufacturers (potted if possible)
  22. To Recap - A Question
  23. KT 44 anyone tried these
  24. Volts AC rating in power supply caps
  25. unfamiliar tube brand
  26. power supply schematic with a 6080 used as a "pass tube"
  27. Electro-Vox LA-210 Preamp; tube
  28. why so CHEAP!?
  29. Antique Electronic Supply
  30. Best Use For My Sansui Iron?
  31. Help on AMC CVT 3030
  32. Heathkit W-5M Red Plate Issue
  33. 1st Post (here) : ) My first project: Boozhound Amp
  34. regulated DC heater supply
  35. Help me pick up some good tubes! Urgent!
  36. CLCRC power supply config
  37. Choke Replacement Question.
  38. What tube instead of 7189
  39. Help on PP EL 34 from Claus Byrith
  40. Datasheet of PTT4 tube?
  41. ready to give up
  42. O-Ring sizes for Tube Dampers
  43. preamp /amp combination question
  44. Strange Transformer Question.....
  45. Audio Note M3/4/5/6/8 schematics
  46. Lundahl LL1540 for SY's heretical?
  47. Henrys
  48. 955 Acorn tubes
  49. Do you know these Ampex mono Amps
  50. Audio Research Resistor Type
  51. What's the best low wattage guitar amp?
  52. volume issues
  53. Need advice for best CCS
  54. confusion in the resistor/capacitor values and B+ supply for the aikido
  55. What are the diferences between these ways of output?
  56. PS for tube preamp
  57. what resistors are in the aikido signal path
  58. clarification of aikido heater supply
  59. Audio Note schematics
  60. Data for PE08/40
  61. PA-060 use
  62. Anode loaded 6080 giving less than unity gain, Why??
  63. Frustration with hum and noise in guitar tube amp
  64. 3/8in thick acrylic - would this make a good chassis?
  65. 6c19p Se?
  66. CF and SRPP in one circuit . .
  67. WE417/437 with battery or RC on cathode
  68. Building a Preamp:Dual Outputs Question
  69. Audio Note Conquest?
  70. metallized caps instead of electrolytics in a tube rectifier power supply?
  71. Power transformer as Parafeed output?
  72. Bogen amp
  73. Noob question about plate load
  74. adjusting gain?
  75. Lowering HT
  76. Kaneda hybrid preamp error ?
  77. Match priorities to schematic & toobs
  78. what do you think of this integrated?
  79. Modified Audio Note M7 Tube Pre Amplifier PCB
  80. lundahl xformers - are they potted?
  81. Beginner's very simple line pre-amp
  82. UX-226 Preamp
  83. Difference between microphones
  84. sv572-30, where to find
  85. E182CC - how to connect heater supply?
  86. Aikido pre tube for Minimum Gain
  87. 14gt8...clipping diodes?
  88. HPHV regulator
  89. Grounded Grid
  90. NYAL Super-It - removing volume pots, what resistor value to replace them?
  91. Another Bogen Conversion
  92. Trouble with my "new" PAS-3 Preamp
  93. Tubalizer, Monica
  94. musical angel modified marantz 7 preamp schematics
  95. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  96. Solder directly on tube?
  97. article in NY Times on Russian tubes
  98. Sovtek's sad tale
  99. audio research LS25 preamp
  100. Schematic needed PL519 Push-Pull Ultra-Linear amp
  101. Use 6C19 in a phono amp?
  102. 6L6 Push pull -- Power tranny question
  103. INPOL technology. Duh.
  104. Transformer problem
  105. Anyone tried a hi-voltage project as their first?
  106. Schematic needed PL519 Class A SE
  107. Giaime's new toy - aka the UniOctal
  108. Critique my circuit?
  109. New EC8010-VT52 Amp
  110. EL84/6BQ5 triode pp with no cathode biasing
  111. EL34 Push Pull in Class A
  112. In search of tube audiophile in Dhaka, Bangladesh
  113. Passive preamp with utc transformers
  114. RGN rectifiers in PSUD2...
  115. Power amp harmonics ?
  116. bypass tone controls on heathkit sp-2
  117. PS Caps
  118. Doubts on cathode stripping in tubes
  119. Edcor amplifier --> 6l6 PP
  120. Welborne labs phono stage needs help, got killed in power surge last night
  121. Huge OPT and small tubes
  122. UTC technology
  123. Luxman 38FD schematic
  124. EL84 PP Diy. Pls help me!!!
  125. Wurlitzer amplifier needs help
  126. Grounding case of 6J5
  127. Tube HW question from a software guy
  128. 12AU7 tube preamplifier schema
  129. "Improved RIAA by Jax"-Power supply help needed!!!
  130. OT Overload question
  131. V76
  132. Application of 6877 ?
  133. First nos tubes
  134. Looking for tube sockets
  135. Input transformers impedance questions
  136. Hybrid amp schema?
  137. Hybrid Cascode ?
  138. Interstage topology question
  139. raccomandation with valve amps
  140. Power Transformers in Output!
  141. How do I design "SCREEN GRID DRIVE"
  142. My El34 SET
  143. Ancient Bogen 807PP Amp-Guitar
  144. Schematic needed 811a Class A2
  145. Power transformer from Tek545 'oscope
  146. Agape Audio Labs
  147. ETF06 - A century of good sound
  148. I completed my amp!
  149. Overload recovery
  150. Converting SS eq. to Tube
  151. oscillation
  152. Tube preamp with: 1V in and 15Vout???
  153. Electrolytic Cap Search
  154. Bibster's 5687 Linestage, the return
  155. Anyone know anything about Morreto amps?
  156. Determining Output Power
  157. Turn on static?
  158. Estimate power transformer current rate?
  159. Control grid Voltage / grid stoppers...
  160. Horizontal TV tubes used in amplifier?
  161. tube sterio preamp complete
  162. Cons for using instrumentation tube PS for project amp...
  163. Svetlanas site down?
  164. Calculations for new Power transformer
  165. Mullard CV4015 info?
  166. SMPS for tube amp?
  167. Pentode Push-Pull
  168. LL1660S Anomaly
  169. DIY Hybrid poweramp noise and hum problem
  170. tube questions
  171. Problems w/biasing a lC50
  172. Big Honkin Tele
  173. Tube DIY store
  174. Pronouced 300B amp Midrange
  175. Tube preamp with current mirror
  176. Transformer Coupling and Headphones? (Toob Noob)
  177. Who can explain the source of this Siemens 12AU7
  178. how does one tell when a tube is truely dead?
  179. A curious observation
  180. Help choosing capacitor value?
  181. Neon Power?
  182. The rectifier from hell, a little story.
  183. a directly heated monkey?
  184. 6l6gc SET, my first DIY
  185. SE Output Transformer Matching
  186. power tube biasing
  187. Jupiters: Tolerance: 26% over spec: o.k.?
  188. Help! 6DJ8 Tube Buffer Schematics
  189. Output Transformers for an EL84 Push-Pull Amp
  190. Advice regarding philips/mullard EL34
  191. 300b based monoblock plans
  192. need help for Marshall PCB
  193. Marshall schematic ?
  194. counterpoint Sa 5.1
  195. Help with bogen CH8
  196. where do you get those schematics / layouts?
  197. Spice 3f4 model of a low voltage direct heated signal level pentode
  198. ECC82
  199. Major diff between 12AX7 and 12AU7
  200. Voltage doubler question
  201. el34 instead of 6550
  202. Bogen CH8
  203. Ah Njoe Tjoeb 4000 problem
  204. my last project
  205. TIP50 voltage regulator
  206. Collets for 212 pins
  207. K-12M Enclosure + Upgrades. Finished!
  208. Will this work?
  209. Big tube - what is it?
  210. Help! no signal! Marshall JTM60
  211. PSU topology & regulator
  212. Dynaco from scratch
  213. 6HV5A Single Ended Amp
  214. Cheap but not too much !
  215. Quick Output Transformer Question
  216. Help with guitar tube amp mods
  217. strange thing with AMC 2030
  218. GE6072 replacement tube
  219. Counterpoint 5.1 preamp
  220. Tube library
  221. RIAA recording on CD
  222. Old SE transformer measuring?
  223. Speakers for tube amps...
  224. MF x10v3
  225. Free Tube Books.....
  226. A Transformer question
  227. 6v6 PP - No sound
  228. help with interstage needed
  229. Hum in Speakers
  230. Just another PP...
  231. Leak Stereo 20 questions
  232. 10M45 CCS, what am I doing wrong ?
  233. Various transformers
  234. tubes sound
  235. Power supply help!
  236. KR Tubes
  237. Bi-amp Between Tube, and SS
  238. 2 Tube questions,
  239. my biggest project ever , need lotsa help plz
  240. tube temperatures
  241. hh scott bias issues
  242. B+ required w/ ccs load
  243. Info re Soundtech powerone tube amp
  244. Verdier Regulated Power Supply
  245. 6DJ8/ECC88 mu-follower
  246. Tube Compressor
  247. Newbie PSU question
  248. Hickok Cardmatic tube tester cards
  249. Hashimoto SE Output Transformer
  250. Ripple and chokes

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