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  1. 12B4a Cathode Follower
  2. Hybrid voltage doubler using tube and diode
  3. Finally finished my first tube amp!
  4. advice on an EL84 Push pull Amp schematic
  5. Vintage radio
  6. Look for 12AU7 Preamp Circuit .
  7. PSU question? Going tube rectified
  8. PSU Rebuild Help Pleas
  9. Screeching tubes
  10. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  11. Fisher 800 restoration
  12. stern's ecl86 amp
  13. Look for Western Electric KS-16547-L1 circuit diagram
  14. Help about grommes 500C
  15. Dynaco MK III with 6146A tubes.
  16. Volume pot for Musical Fidelity F22 pre amp.
  17. Don't you just hate it when
  18. Bogen 8417 tube conversion..?
  19. How to Build Unbilical from PS to Phono
  20. Class A SET preamp, help
  21. Grounding MFA Luminescence
  22. custom transformer manufacturers (potted if possible)
  23. To Recap - A Question
  24. KT 44 anyone tried these
  25. Volts AC rating in power supply caps
  26. unfamiliar tube brand
  27. power supply schematic with a 6080 used as a "pass tube"
  28. Electro-Vox LA-210 Preamp; tube
  29. why so CHEAP!?
  30. Antique Electronic Supply
  31. Best Use For My Sansui Iron?
  32. Help on AMC CVT 3030
  33. Heathkit W-5M Red Plate Issue
  34. 1st Post (here) : ) My first project: Boozhound Amp
  35. regulated DC heater supply
  36. Help me pick up some good tubes! Urgent!
  37. CLCRC power supply config
  38. Choke Replacement Question.
  39. What tube instead of 7189
  40. Help on PP EL 34 from Claus Byrith
  41. Datasheet of PTT4 tube?
  42. ready to give up
  43. O-Ring sizes for Tube Dampers
  44. preamp /amp combination question
  45. Strange Transformer Question.....
  46. Audio Note M3/4/5/6/8 schematics
  47. Lundahl LL1540 for SY's heretical?
  48. Henrys
  49. 955 Acorn tubes
  50. Do you know these Ampex mono Amps
  51. Audio Research Resistor Type
  52. What's the best low wattage guitar amp?
  53. volume issues
  54. Need advice for best CCS
  55. confusion in the resistor/capacitor values and B+ supply for the aikido
  56. What are the diferences between these ways of output?
  57. PS for tube preamp
  58. what resistors are in the aikido signal path
  59. clarification of aikido heater supply
  60. Audio Note schematics
  61. Data for PE08/40
  62. PA-060 use
  63. Anode loaded 6080 giving less than unity gain, Why??
  64. Frustration with hum and noise in guitar tube amp
  65. 3/8in thick acrylic - would this make a good chassis?
  66. 6c19p Se?
  67. CF and SRPP in one circuit . .
  68. WE417/437 with battery or RC on cathode
  69. Building a Preamp:Dual Outputs Question
  70. Audio Note Conquest?
  71. metallized caps instead of electrolytics in a tube rectifier power supply?
  72. Power transformer as Parafeed output?
  73. Bogen amp
  74. Noob question about plate load
  75. adjusting gain?
  76. Lowering HT
  77. Kaneda hybrid preamp error ?
  78. Match priorities to schematic & toobs
  79. what do you think of this integrated?
  80. Modified Audio Note M7 Tube Pre Amplifier PCB
  81. lundahl xformers - are they potted?
  82. Beginner's very simple line pre-amp
  83. UX-226 Preamp
  84. Difference between microphones
  85. sv572-30, where to find
  86. E182CC - how to connect heater supply?
  87. Aikido pre tube for Minimum Gain
  88. 14gt8...clipping diodes?
  89. HPHV regulator
  90. Grounded Grid
  91. NYAL Super-It - removing volume pots, what resistor value to replace them?
  92. Another Bogen Conversion
  93. Trouble with my "new" PAS-3 Preamp
  94. Tubalizer, Monica
  95. musical angel modified marantz 7 preamp schematics
  96. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  97. Solder directly on tube?
  98. article in NY Times on Russian tubes
  99. Sovtek's sad tale
  100. audio research LS25 preamp
  101. Schematic needed PL519 Push-Pull Ultra-Linear amp
  102. Use 6C19 in a phono amp?
  103. 6L6 Push pull -- Power tranny question
  104. INPOL technology. Duh.
  105. Transformer problem
  106. Anyone tried a hi-voltage project as their first?
  107. Schematic needed PL519 Class A SE
  108. Giaime's new toy - aka the UniOctal
  109. Critique my circuit?
  110. New EC8010-VT52 Amp
  111. EL84/6BQ5 triode pp with no cathode biasing
  112. EL34 Push Pull in Class A
  113. In search of tube audiophile in Dhaka, Bangladesh
  114. Passive preamp with utc transformers
  115. RGN rectifiers in PSUD2...
  116. Power amp harmonics ?
  117. bypass tone controls on heathkit sp-2
  118. PS Caps
  119. Doubts on cathode stripping in tubes
  120. Edcor amplifier --> 6l6 PP
  121. Welborne labs phono stage needs help, got killed in power surge last night
  122. Huge OPT and small tubes
  123. UTC technology
  124. Luxman 38FD schematic
  125. EL84 PP Diy. Pls help me!!!
  126. Wurlitzer amplifier needs help
  127. Grounding case of 6J5
  128. Tube HW question from a software guy
  129. 12AU7 tube preamplifier schema
  130. "Improved RIAA by Jax"-Power supply help needed!!!
  131. OT Overload question
  132. V76
  133. Application of 6877 ?
  134. First nos tubes
  135. Looking for tube sockets
  136. Input transformers impedance questions
  137. Hybrid amp schema?
  138. Hybrid Cascode ?
  139. Interstage topology question
  140. raccomandation with valve amps
  141. Power Transformers in Output!
  142. How do I design "SCREEN GRID DRIVE"
  143. My El34 SET
  144. Ancient Bogen 807PP Amp-Guitar
  145. Schematic needed 811a Class A2
  146. Power transformer from Tek545 'oscope
  147. Agape Audio Labs
  148. ETF06 - A century of good sound
  149. I completed my amp!
  150. Overload recovery
  151. Converting SS eq. to Tube
  152. oscillation
  153. Tube preamp with: 1V in and 15Vout???
  154. Electrolytic Cap Search
  155. Bibster's 5687 Linestage, the return
  156. Anyone know anything about Morreto amps?
  157. Determining Output Power
  158. Turn on static?
  159. Estimate power transformer current rate?
  160. Control grid Voltage / grid stoppers...
  161. Horizontal TV tubes used in amplifier?
  162. tube sterio preamp complete
  163. Cons for using instrumentation tube PS for project amp...
  164. Svetlanas site down?
  165. Calculations for new Power transformer
  166. Mullard CV4015 info?
  167. SMPS for tube amp?
  168. Pentode Push-Pull
  169. LL1660S Anomaly
  170. DIY Hybrid poweramp noise and hum problem
  171. tube questions
  172. Problems w/biasing a lC50
  173. Big Honkin Tele
  174. Tube DIY store
  175. Pronouced 300B amp Midrange
  176. Tube preamp with current mirror
  177. Transformer Coupling and Headphones? (Toob Noob)
  178. Who can explain the source of this Siemens 12AU7
  179. how does one tell when a tube is truely dead?
  180. A curious observation
  181. Help choosing capacitor value?
  182. Neon Power?
  183. The rectifier from hell, a little story.
  184. a directly heated monkey?
  185. 6l6gc SET, my first DIY
  186. SE Output Transformer Matching
  187. power tube biasing
  188. Jupiters: Tolerance: 26% over spec: o.k.?
  189. Help! 6DJ8 Tube Buffer Schematics
  190. Output Transformers for an EL84 Push-Pull Amp
  191. Advice regarding philips/mullard EL34
  192. 300b based monoblock plans
  193. need help for Marshall PCB
  194. Marshall schematic ?
  195. counterpoint Sa 5.1
  196. Help with bogen CH8
  197. where do you get those schematics / layouts?
  198. Spice 3f4 model of a low voltage direct heated signal level pentode
  199. ECC82
  200. Major diff between 12AX7 and 12AU7
  201. Voltage doubler question
  202. el34 instead of 6550
  203. Bogen CH8
  204. Ah Njoe Tjoeb 4000 problem
  205. my last project
  206. TIP50 voltage regulator
  207. Collets for 212 pins
  208. K-12M Enclosure + Upgrades. Finished!
  209. Will this work?
  210. Big tube - what is it?
  211. Help! no signal! Marshall JTM60
  212. PSU topology & regulator
  213. Dynaco from scratch
  214. 6HV5A Single Ended Amp
  215. Cheap but not too much !
  216. Quick Output Transformer Question
  217. Help with guitar tube amp mods
  218. strange thing with AMC 2030
  219. GE6072 replacement tube
  220. Counterpoint 5.1 preamp
  221. Tube library
  222. RIAA recording on CD
  223. Old SE transformer measuring?
  224. Speakers for tube amps...
  225. MF x10v3
  226. Free Tube Books.....
  227. A Transformer question
  228. 6v6 PP - No sound
  229. help with interstage needed
  230. Hum in Speakers
  231. Just another PP...
  232. Leak Stereo 20 questions
  233. 10M45 CCS, what am I doing wrong ?
  234. Various transformers
  235. tubes sound
  236. Power supply help!
  237. KR Tubes
  238. Bi-amp Between Tube, and SS
  239. 2 Tube questions,
  240. my biggest project ever , need lotsa help plz
  241. tube temperatures
  242. hh scott bias issues
  243. B+ required w/ ccs load
  244. Info re Soundtech powerone tube amp
  245. Verdier Regulated Power Supply
  246. 6DJ8/ECC88 mu-follower
  247. Tube Compressor
  248. Newbie PSU question
  249. Hickok Cardmatic tube tester cards
  250. Hashimoto SE Output Transformer

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