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  1. Voltage Multipliers
  2. I want to build an AM Tube Tuner
  3. Tube Amp CCS?
  4. S-5 Electronics Tube Amp Kit
  5. Tube amps from eBay (China)
  6. filament supply: batteries v TentLabs?
  7. replace a 5651 tube with a zener?
  8. tube design books
  9. Bogen chb100 input conversion suggestions
  10. MesaBoogie 400+ clone
  11. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  12. R-core xformers from China
  13. Counterpoint Service manual wanted
  14. Two chokes in one pot?
  15. help with a transformer
  16. 311T (211 alike) HIGH power triode
  17. Re-attaching anode cap to 805 or 811A tube
  18. "Fisher Doctor"
  19. Aikido + class D in the output stage
  20. tube-shop-com
  21. Ultrasonic heaters
  22. Grounding the Filament Winding
  23. Lundahl LL1680 for balanced output
  24. Website is back & new books posted
  25. strange tube G1 S/5
  26. First Tube Amp Needs an Overhaul
  27. pspice models for tubes
  28. Source for iron cores?
  29. Quad EL84 SE question
  30. Use of 12j1l and gu-50 tubes
  31. Shuguang 300B-98C
  32. Philips AG-9016 Upgrades???
  33. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  34. tube amp in a PCB with a toroidal xformer beside it?
  35. Need advice running 220v in USA
  36. My Fender Princeton FD2 chasis (clone)
  37. Parallel-Push-Pull KT66 organ amp conversion ???
  38. new on tubes
  39. Balance 5687 pre-amp any advise??
  40. The Limitations of an EL34 in UL
  41. Source for tube bases....?
  42. 10Y, 26, 27 and 45: relative microphonics
  43. KT77 Mod Question/Idea/Punshishment
  44. KT88 SE with Edcor xfrmr
  45. Diy Distortion Pedal
  46. 45 fans expanded horizons upstream?
  47. 12B4a Cathode Follower
  48. Hybrid voltage doubler using tube and diode
  49. Finally finished my first tube amp!
  50. advice on an EL84 Push pull Amp schematic
  51. Vintage radio
  52. Look for 12AU7 Preamp Circuit .
  53. PSU question? Going tube rectified
  54. PSU Rebuild Help Pleas
  55. Screeching tubes
  56. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  57. Fisher 800 restoration
  58. stern's ecl86 amp
  59. Look for Western Electric KS-16547-L1 circuit diagram
  60. Help about grommes 500C
  61. Dynaco MK III with 6146A tubes.
  62. Volume pot for Musical Fidelity F22 pre amp.
  63. Don't you just hate it when
  64. Bogen 8417 tube conversion..?
  65. How to Build Unbilical from PS to Phono
  66. Class A SET preamp, help
  67. Grounding MFA Luminescence
  68. custom transformer manufacturers (potted if possible)
  69. To Recap - A Question
  70. KT 44 anyone tried these
  71. Volts AC rating in power supply caps
  72. unfamiliar tube brand
  73. power supply schematic with a 6080 used as a "pass tube"
  74. Electro-Vox LA-210 Preamp; tube
  75. why so CHEAP!?
  76. Antique Electronic Supply
  77. Best Use For My Sansui Iron?
  78. Help on AMC CVT 3030
  79. Heathkit W-5M Red Plate Issue
  80. 1st Post (here) : ) My first project: Boozhound Amp
  81. regulated DC heater supply
  82. Help me pick up some good tubes! Urgent!
  83. CLCRC power supply config
  84. Choke Replacement Question.
  85. What tube instead of 7189
  86. Help on PP EL 34 from Claus Byrith
  87. Datasheet of PTT4 tube?
  88. ready to give up
  89. O-Ring sizes for Tube Dampers
  90. preamp /amp combination question
  91. Strange Transformer Question.....
  92. Audio Note M3/4/5/6/8 schematics
  93. Lundahl LL1540 for SY's heretical?
  94. Henrys
  95. 955 Acorn tubes
  96. Do you know these Ampex mono Amps
  97. Audio Research Resistor Type
  98. What's the best low wattage guitar amp?
  99. volume issues
  100. Need advice for best CCS
  101. confusion in the resistor/capacitor values and B+ supply for the aikido
  102. What are the diferences between these ways of output?
  103. PS for tube preamp
  104. what resistors are in the aikido signal path
  105. clarification of aikido heater supply
  106. Audio Note schematics
  107. Data for PE08/40
  108. PA-060 use
  109. Anode loaded 6080 giving less than unity gain, Why??
  110. Frustration with hum and noise in guitar tube amp
  111. 3/8in thick acrylic - would this make a good chassis?
  112. 6c19p Se?
  113. CF and SRPP in one circuit . .
  114. WE417/437 with battery or RC on cathode
  115. Building a Preamp:Dual Outputs Question
  116. Audio Note Conquest?
  117. metallized caps instead of electrolytics in a tube rectifier power supply?
  118. Power transformer as Parafeed output?
  119. Bogen amp
  120. Noob question about plate load
  121. adjusting gain?
  122. Lowering HT
  123. Kaneda hybrid preamp error ?
  124. Match priorities to schematic & toobs
  125. what do you think of this integrated?
  126. Modified Audio Note M7 Tube Pre Amplifier PCB
  127. lundahl xformers - are they potted?
  128. Beginner's very simple line pre-amp
  129. UX-226 Preamp
  130. Difference between microphones
  131. sv572-30, where to find
  132. E182CC - how to connect heater supply?
  133. Aikido pre tube for Minimum Gain
  134. 14gt8...clipping diodes?
  135. HPHV regulator
  136. Grounded Grid
  137. NYAL Super-It - removing volume pots, what resistor value to replace them?
  138. Another Bogen Conversion
  139. Trouble with my "new" PAS-3 Preamp
  140. Tubalizer, Monica
  141. musical angel modified marantz 7 preamp schematics
  142. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  143. Solder directly on tube?
  144. article in NY Times on Russian tubes
  145. Sovtek's sad tale
  146. audio research LS25 preamp
  147. Schematic needed PL519 Push-Pull Ultra-Linear amp
  148. Use 6C19 in a phono amp?
  149. 6L6 Push pull -- Power tranny question
  150. INPOL technology. Duh.
  151. Transformer problem
  152. Anyone tried a hi-voltage project as their first?
  153. Schematic needed PL519 Class A SE
  154. Giaime's new toy - aka the UniOctal
  155. Critique my circuit?
  156. New EC8010-VT52 Amp
  157. EL84/6BQ5 triode pp with no cathode biasing
  158. EL34 Push Pull in Class A
  159. In search of tube audiophile in Dhaka, Bangladesh
  160. Passive preamp with utc transformers
  161. RGN rectifiers in PSUD2...
  162. Power amp harmonics ?
  163. bypass tone controls on heathkit sp-2
  164. PS Caps
  165. Doubts on cathode stripping in tubes
  166. Edcor amplifier --> 6l6 PP
  167. Welborne labs phono stage needs help, got killed in power surge last night
  168. Huge OPT and small tubes
  169. UTC technology
  170. Luxman 38FD schematic
  171. EL84 PP Diy. Pls help me!!!
  172. Wurlitzer amplifier needs help
  173. Grounding case of 6J5
  174. Tube HW question from a software guy
  175. 12AU7 tube preamplifier schema
  176. "Improved RIAA by Jax"-Power supply help needed!!!
  177. OT Overload question
  178. V76
  179. Application of 6877 ?
  180. First nos tubes
  181. Looking for tube sockets
  182. Input transformers impedance questions
  183. Hybrid amp schema?
  184. Hybrid Cascode ?
  185. Interstage topology question
  186. raccomandation with valve amps
  187. Power Transformers in Output!
  188. How do I design "SCREEN GRID DRIVE"
  189. My El34 SET
  190. Ancient Bogen 807PP Amp-Guitar
  191. Schematic needed 811a Class A2
  192. Power transformer from Tek545 'oscope
  193. Agape Audio Labs
  194. ETF06 - A century of good sound
  195. I completed my amp!
  196. Overload recovery
  197. Converting SS eq. to Tube
  198. oscillation
  199. Tube preamp with: 1V in and 15Vout???
  200. Electrolytic Cap Search
  201. Bibster's 5687 Linestage, the return
  202. Anyone know anything about Morreto amps?
  203. Determining Output Power
  204. Turn on static?
  205. Estimate power transformer current rate?
  206. Control grid Voltage / grid stoppers...
  207. Horizontal TV tubes used in amplifier?
  208. tube sterio preamp complete
  209. Cons for using instrumentation tube PS for project amp...
  210. Svetlanas site down?
  211. Calculations for new Power transformer
  212. Mullard CV4015 info?
  213. SMPS for tube amp?
  214. Pentode Push-Pull
  215. LL1660S Anomaly
  216. DIY Hybrid poweramp noise and hum problem
  217. tube questions
  218. Problems w/biasing a lC50
  219. Big Honkin Tele
  220. Tube DIY store
  221. Pronouced 300B amp Midrange
  222. Tube preamp with current mirror
  223. Transformer Coupling and Headphones? (Toob Noob)
  224. Who can explain the source of this Siemens 12AU7
  225. how does one tell when a tube is truely dead?
  226. A curious observation
  227. Help choosing capacitor value?
  228. Neon Power?
  229. The rectifier from hell, a little story.
  230. a directly heated monkey?
  231. 6l6gc SET, my first DIY
  232. SE Output Transformer Matching
  233. power tube biasing
  234. Jupiters: Tolerance: 26% over spec: o.k.?
  235. Help! 6DJ8 Tube Buffer Schematics
  236. Output Transformers for an EL84 Push-Pull Amp
  237. Advice regarding philips/mullard EL34
  238. 300b based monoblock plans
  239. need help for Marshall PCB
  240. Marshall schematic ?
  241. counterpoint Sa 5.1
  242. Help with bogen CH8
  243. where do you get those schematics / layouts?
  244. Spice 3f4 model of a low voltage direct heated signal level pentode
  245. ECC82
  246. Major diff between 12AX7 and 12AU7
  247. Voltage doubler question
  248. el34 instead of 6550
  249. Bogen CH8
  250. Ah Njoe Tjoeb 4000 problem

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