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

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