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  1. The Limitations of an EL34 in UL
  2. Source for tube bases....?
  3. 10Y, 26, 27 and 45: relative microphonics
  4. KT77 Mod Question/Idea/Punshishment
  5. KT88 SE with Edcor xfrmr
  6. Diy Distortion Pedal
  7. 45 fans expanded horizons upstream?
  8. 12B4a Cathode Follower
  9. Hybrid voltage doubler using tube and diode
  10. Finally finished my first tube amp!
  11. advice on an EL84 Push pull Amp schematic
  12. Vintage radio
  13. Look for 12AU7 Preamp Circuit .
  14. PSU question? Going tube rectified
  15. PSU Rebuild Help Pleas
  16. Screeching tubes
  17. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  18. Fisher 800 restoration
  19. stern's ecl86 amp
  20. Look for Western Electric KS-16547-L1 circuit diagram
  21. Help about grommes 500C
  22. Dynaco MK III with 6146A tubes.
  23. Volume pot for Musical Fidelity F22 pre amp.
  24. Don't you just hate it when
  25. Bogen 8417 tube conversion..?
  26. How to Build Unbilical from PS to Phono
  27. Class A SET preamp, help
  28. Grounding MFA Luminescence
  29. custom transformer manufacturers (potted if possible)
  30. To Recap - A Question
  31. KT 44 anyone tried these
  32. Volts AC rating in power supply caps
  33. unfamiliar tube brand
  34. power supply schematic with a 6080 used as a "pass tube"
  35. Electro-Vox LA-210 Preamp; tube
  36. why so CHEAP!?
  37. Antique Electronic Supply
  38. Best Use For My Sansui Iron?
  39. Help on AMC CVT 3030
  40. Heathkit W-5M Red Plate Issue
  41. 1st Post (here) : ) My first project: Boozhound Amp
  42. regulated DC heater supply
  43. Help me pick up some good tubes! Urgent!
  44. CLCRC power supply config
  45. Choke Replacement Question.
  46. What tube instead of 7189
  47. Help on PP EL 34 from Claus Byrith
  48. Datasheet of PTT4 tube?
  49. ready to give up
  50. O-Ring sizes for Tube Dampers
  51. preamp /amp combination question
  52. Strange Transformer Question.....
  53. Audio Note M3/4/5/6/8 schematics
  54. Lundahl LL1540 for SY's heretical?
  55. Henrys
  56. 955 Acorn tubes
  57. Do you know these Ampex mono Amps
  58. Audio Research Resistor Type
  59. What's the best low wattage guitar amp?
  60. volume issues
  61. Need advice for best CCS
  62. confusion in the resistor/capacitor values and B+ supply for the aikido
  63. What are the diferences between these ways of output?
  64. PS for tube preamp
  65. what resistors are in the aikido signal path
  66. clarification of aikido heater supply
  67. Audio Note schematics
  68. Data for PE08/40
  69. PA-060 use
  70. Anode loaded 6080 giving less than unity gain, Why??
  71. Frustration with hum and noise in guitar tube amp
  72. 3/8in thick acrylic - would this make a good chassis?
  73. 6c19p Se?
  74. CF and SRPP in one circuit . .
  75. WE417/437 with battery or RC on cathode
  76. Building a Preamp:Dual Outputs Question
  77. Audio Note Conquest?
  78. metallized caps instead of electrolytics in a tube rectifier power supply?
  79. Power transformer as Parafeed output?
  80. Bogen amp
  81. Noob question about plate load
  82. adjusting gain?
  83. Lowering HT
  84. Kaneda hybrid preamp error ?
  85. Match priorities to schematic & toobs
  86. what do you think of this integrated?
  87. Modified Audio Note M7 Tube Pre Amplifier PCB
  88. lundahl xformers - are they potted?
  89. Beginner's very simple line pre-amp
  90. UX-226 Preamp
  91. Difference between microphones
  92. sv572-30, where to find
  93. E182CC - how to connect heater supply?
  94. Aikido pre tube for Minimum Gain
  95. 14gt8...clipping diodes?
  96. HPHV regulator
  97. Grounded Grid
  98. NYAL Super-It - removing volume pots, what resistor value to replace them?
  99. Another Bogen Conversion
  100. Trouble with my "new" PAS-3 Preamp
  101. Tubalizer, Monica
  102. musical angel modified marantz 7 preamp schematics
  103. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  104. Solder directly on tube?
  105. article in NY Times on Russian tubes
  106. Sovtek's sad tale
  107. audio research LS25 preamp
  108. Schematic needed PL519 Push-Pull Ultra-Linear amp
  109. Use 6C19 in a phono amp?
  110. 6L6 Push pull -- Power tranny question
  111. INPOL technology. Duh.
  112. Transformer problem
  113. Anyone tried a hi-voltage project as their first?
  114. Schematic needed PL519 Class A SE
  115. Giaime's new toy - aka the UniOctal
  116. Critique my circuit?
  117. New EC8010-VT52 Amp
  118. EL84/6BQ5 triode pp with no cathode biasing
  119. EL34 Push Pull in Class A
  120. In search of tube audiophile in Dhaka, Bangladesh
  121. Passive preamp with utc transformers
  122. RGN rectifiers in PSUD2...
  123. Power amp harmonics ?
  124. bypass tone controls on heathkit sp-2
  125. PS Caps
  126. Doubts on cathode stripping in tubes
  127. Edcor amplifier --> 6l6 PP
  128. Welborne labs phono stage needs help, got killed in power surge last night
  129. Huge OPT and small tubes
  130. UTC technology
  131. Luxman 38FD schematic
  132. EL84 PP Diy. Pls help me!!!
  133. Wurlitzer amplifier needs help
  134. Grounding case of 6J5
  135. Tube HW question from a software guy
  136. 12AU7 tube preamplifier schema
  137. "Improved RIAA by Jax"-Power supply help needed!!!
  138. OT Overload question
  139. V76
  140. Application of 6877 ?
  141. First nos tubes
  142. Looking for tube sockets
  143. Input transformers impedance questions
  144. Hybrid amp schema?
  145. Hybrid Cascode ?
  146. Interstage topology question
  147. raccomandation with valve amps
  148. Power Transformers in Output!
  149. How do I design "SCREEN GRID DRIVE"
  150. My El34 SET
  151. Ancient Bogen 807PP Amp-Guitar
  152. Schematic needed 811a Class A2
  153. Power transformer from Tek545 'oscope
  154. Agape Audio Labs
  155. ETF06 - A century of good sound
  156. I completed my amp!
  157. Overload recovery
  158. Converting SS eq. to Tube
  159. oscillation
  160. Tube preamp with: 1V in and 15Vout???
  161. Electrolytic Cap Search
  162. Bibster's 5687 Linestage, the return
  163. Anyone know anything about Morreto amps?
  164. Determining Output Power
  165. Turn on static?
  166. Estimate power transformer current rate?
  167. Control grid Voltage / grid stoppers...
  168. Horizontal TV tubes used in amplifier?
  169. tube sterio preamp complete
  170. Cons for using instrumentation tube PS for project amp...
  171. Svetlanas site down?
  172. Calculations for new Power transformer
  173. Mullard CV4015 info?
  174. SMPS for tube amp?
  175. Pentode Push-Pull
  176. LL1660S Anomaly
  177. DIY Hybrid poweramp noise and hum problem
  178. tube questions
  179. Problems w/biasing a lC50
  180. Big Honkin Tele
  181. Tube DIY store
  182. Pronouced 300B amp Midrange
  183. Tube preamp with current mirror
  184. Transformer Coupling and Headphones? (Toob Noob)
  185. Who can explain the source of this Siemens 12AU7
  186. how does one tell when a tube is truely dead?
  187. A curious observation
  188. Help choosing capacitor value?
  189. Neon Power?
  190. The rectifier from hell, a little story.
  191. a directly heated monkey?
  192. 6l6gc SET, my first DIY
  193. SE Output Transformer Matching
  194. power tube biasing
  195. Jupiters: Tolerance: 26% over spec: o.k.?
  196. Help! 6DJ8 Tube Buffer Schematics
  197. Output Transformers for an EL84 Push-Pull Amp
  198. Advice regarding philips/mullard EL34
  199. 300b based monoblock plans
  200. need help for Marshall PCB
  201. Marshall schematic ?
  202. counterpoint Sa 5.1
  203. Help with bogen CH8
  204. where do you get those schematics / layouts?
  205. Spice 3f4 model of a low voltage direct heated signal level pentode
  206. ECC82
  207. Major diff between 12AX7 and 12AU7
  208. Voltage doubler question
  209. el34 instead of 6550
  210. Bogen CH8
  211. Ah Njoe Tjoeb 4000 problem
  212. my last project
  213. TIP50 voltage regulator
  214. Collets for 212 pins
  215. K-12M Enclosure + Upgrades. Finished!
  216. Will this work?
  217. Big tube - what is it?
  218. Help! no signal! Marshall JTM60
  219. PSU topology & regulator
  220. Dynaco from scratch
  221. 6HV5A Single Ended Amp
  222. Cheap but not too much !
  223. Quick Output Transformer Question
  224. Help with guitar tube amp mods
  225. strange thing with AMC 2030
  226. GE6072 replacement tube
  227. Counterpoint 5.1 preamp
  228. Tube library
  229. RIAA recording on CD
  230. Old SE transformer measuring?
  231. Speakers for tube amps...
  232. MF x10v3
  233. Free Tube Books.....
  234. A Transformer question
  235. 6v6 PP - No sound
  236. help with interstage needed
  237. Hum in Speakers
  238. Just another PP...
  239. Leak Stereo 20 questions
  240. 10M45 CCS, what am I doing wrong ?
  241. Various transformers
  242. tubes sound
  243. Power supply help!
  244. KR Tubes
  245. Bi-amp Between Tube, and SS
  246. 2 Tube questions,
  247. my biggest project ever , need lotsa help plz
  248. tube temperatures
  249. hh scott bias issues
  250. B+ required w/ ccs load

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