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  1. tube sockets
  2. PX25
  3. Research on tubes and circuits simple circuits
  4. using only 1/2 of a dual triode
  5. Some HMMM on my SRPP
  6. Grid Stopper
  7. diy tube amp problem
  8. The Red Light District - another PP EL84 amp
  9. Balanced 300B output for headphones or loudspeakers?
  10. 5692, the best?
  11. Power transformer quality differences
  12. Is it possible to use regulated DC for a rectifier tube?
  13. Transformer Secondary Power
  14. Phono preamp
  15. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  16. Physically small rectifier tube with 5V heaters
  17. Distorting 5687 preamp circuit
  18. Looking for a good 300B datasheet
  19. CCS is your friend!
  20. Valve Pre Amp & Class D Power Amp
  21. heater supply questions
  22. sub-mini valve
  23. Amp kit recommendations
  24. First amp for a new in valves
  25. Loud buzz and hum from one monoblock!!!
  26. Stueyh
  27. Big *** '50s Power Supply, now what? 300B SET ideas...
  28. Phono Preamp Design Needed
  29. antique fender bassman 50 retubed HELP
  30. Severe oscillation in 6L6 amp
  31. How to tweak warmth to a power amp?
  32. Can anyone explain me this Loftin White amp?
  33. Substituting dual triodes
  34. ValveWave-1 My first Tube Project
  35. changing output capacitor value? what should I consider?
  36. motor run caps in the output? good or bad idea?
  37. resistors across the heater voltage then the middle is grounded
  38. Switched Pot Source Needed
  39. transcendar transformer
  40. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  41. Voltage Multipliers
  42. I want to build an AM Tube Tuner
  43. Tube Amp CCS?
  44. S-5 Electronics Tube Amp Kit
  45. Tube amps from eBay (China)
  46. filament supply: batteries v TentLabs?
  47. replace a 5651 tube with a zener?
  48. tube design books
  49. Bogen chb100 input conversion suggestions
  50. MesaBoogie 400+ clone
  51. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  52. R-core xformers from China
  53. Counterpoint Service manual wanted
  54. Two chokes in one pot?
  55. help with a transformer
  56. 311T (211 alike) HIGH power triode
  57. Re-attaching anode cap to 805 or 811A tube
  58. "Fisher Doctor"
  59. Aikido + class D in the output stage
  60. tube-shop-com
  61. Ultrasonic heaters
  62. Grounding the Filament Winding
  63. Lundahl LL1680 for balanced output
  64. Website is back & new books posted
  65. strange tube G1 S/5
  66. First Tube Amp Needs an Overhaul
  67. pspice models for tubes
  68. Source for iron cores?
  69. Quad EL84 SE question
  70. Use of 12j1l and gu-50 tubes
  71. Shuguang 300B-98C
  72. Philips AG-9016 Upgrades???
  73. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  74. tube amp in a PCB with a toroidal xformer beside it?
  75. Need advice running 220v in USA
  76. My Fender Princeton FD2 chasis (clone)
  77. Parallel-Push-Pull KT66 organ amp conversion ???
  78. new on tubes
  79. Balance 5687 pre-amp any advise??
  80. The Limitations of an EL34 in UL
  81. Source for tube bases....?
  82. 10Y, 26, 27 and 45: relative microphonics
  83. KT77 Mod Question/Idea/Punshishment
  84. KT88 SE with Edcor xfrmr
  85. Diy Distortion Pedal
  86. 45 fans expanded horizons upstream?
  87. 12B4a Cathode Follower
  88. Hybrid voltage doubler using tube and diode
  89. Finally finished my first tube amp!
  90. advice on an EL84 Push pull Amp schematic
  91. Vintage radio
  92. Look for 12AU7 Preamp Circuit .
  93. PSU question? Going tube rectified
  94. PSU Rebuild Help Pleas
  95. Screeching tubes
  96. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  97. Fisher 800 restoration
  98. stern's ecl86 amp
  99. Look for Western Electric KS-16547-L1 circuit diagram
  100. Help about grommes 500C
  101. Dynaco MK III with 6146A tubes.
  102. Volume pot for Musical Fidelity F22 pre amp.
  103. Don't you just hate it when
  104. Bogen 8417 tube conversion..?
  105. How to Build Unbilical from PS to Phono
  106. Class A SET preamp, help
  107. Grounding MFA Luminescence
  108. custom transformer manufacturers (potted if possible)
  109. To Recap - A Question
  110. KT 44 anyone tried these
  111. Volts AC rating in power supply caps
  112. unfamiliar tube brand
  113. power supply schematic with a 6080 used as a "pass tube"
  114. Electro-Vox LA-210 Preamp; tube
  115. why so CHEAP!?
  116. Antique Electronic Supply
  117. Best Use For My Sansui Iron?
  118. Help on AMC CVT 3030
  119. Heathkit W-5M Red Plate Issue
  120. 1st Post (here) : ) My first project: Boozhound Amp
  121. regulated DC heater supply
  122. Help me pick up some good tubes! Urgent!
  123. CLCRC power supply config
  124. Choke Replacement Question.
  125. What tube instead of 7189
  126. Help on PP EL 34 from Claus Byrith
  127. Datasheet of PTT4 tube?
  128. ready to give up
  129. O-Ring sizes for Tube Dampers
  130. preamp /amp combination question
  131. Strange Transformer Question.....
  132. Audio Note M3/4/5/6/8 schematics
  133. Lundahl LL1540 for SY's heretical?
  134. Henrys
  135. 955 Acorn tubes
  136. Do you know these Ampex mono Amps
  137. Audio Research Resistor Type
  138. What's the best low wattage guitar amp?
  139. volume issues
  140. Need advice for best CCS
  141. confusion in the resistor/capacitor values and B+ supply for the aikido
  142. What are the diferences between these ways of output?
  143. PS for tube preamp
  144. what resistors are in the aikido signal path
  145. clarification of aikido heater supply
  146. Audio Note schematics
  147. Data for PE08/40
  148. PA-060 use
  149. Anode loaded 6080 giving less than unity gain, Why??
  150. Frustration with hum and noise in guitar tube amp
  151. 3/8in thick acrylic - would this make a good chassis?
  152. 6c19p Se?
  153. CF and SRPP in one circuit . .
  154. WE417/437 with battery or RC on cathode
  155. Building a Preamp:Dual Outputs Question
  156. Audio Note Conquest?
  157. metallized caps instead of electrolytics in a tube rectifier power supply?
  158. Power transformer as Parafeed output?
  159. Bogen amp
  160. Noob question about plate load
  161. adjusting gain?
  162. Lowering HT
  163. Kaneda hybrid preamp error ?
  164. Match priorities to schematic & toobs
  165. what do you think of this integrated?
  166. Modified Audio Note M7 Tube Pre Amplifier PCB
  167. lundahl xformers - are they potted?
  168. Beginner's very simple line pre-amp
  169. UX-226 Preamp
  170. Difference between microphones
  171. sv572-30, where to find
  172. E182CC - how to connect heater supply?
  173. Aikido pre tube for Minimum Gain
  174. 14gt8...clipping diodes?
  175. HPHV regulator
  176. Grounded Grid
  177. NYAL Super-It - removing volume pots, what resistor value to replace them?
  178. Another Bogen Conversion
  179. Trouble with my "new" PAS-3 Preamp
  180. Tubalizer, Monica
  181. musical angel modified marantz 7 preamp schematics
  182. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  183. Solder directly on tube?
  184. article in NY Times on Russian tubes
  185. Sovtek's sad tale
  186. audio research LS25 preamp
  187. Schematic needed PL519 Push-Pull Ultra-Linear amp
  188. Use 6C19 in a phono amp?
  189. 6L6 Push pull -- Power tranny question
  190. INPOL technology. Duh.
  191. Transformer problem
  192. Anyone tried a hi-voltage project as their first?
  193. Schematic needed PL519 Class A SE
  194. Giaime's new toy - aka the UniOctal
  195. Critique my circuit?
  196. New EC8010-VT52 Amp
  197. EL84/6BQ5 triode pp with no cathode biasing
  198. EL34 Push Pull in Class A
  199. In search of tube audiophile in Dhaka, Bangladesh
  200. Passive preamp with utc transformers
  201. RGN rectifiers in PSUD2...
  202. Power amp harmonics ?
  203. bypass tone controls on heathkit sp-2
  204. PS Caps
  205. Doubts on cathode stripping in tubes
  206. Edcor amplifier --> 6l6 PP
  207. Welborne labs phono stage needs help, got killed in power surge last night
  208. Huge OPT and small tubes
  209. UTC technology
  210. Luxman 38FD schematic
  211. EL84 PP Diy. Pls help me!!!
  212. Wurlitzer amplifier needs help
  213. Grounding case of 6J5
  214. Tube HW question from a software guy
  215. 12AU7 tube preamplifier schema
  216. "Improved RIAA by Jax"-Power supply help needed!!!
  217. OT Overload question
  218. V76
  219. Application of 6877 ?
  220. First nos tubes
  221. Looking for tube sockets
  222. Input transformers impedance questions
  223. Hybrid amp schema?
  224. Hybrid Cascode ?
  225. Interstage topology question
  226. raccomandation with valve amps
  227. Power Transformers in Output!
  228. How do I design "SCREEN GRID DRIVE"
  229. My El34 SET
  230. Ancient Bogen 807PP Amp-Guitar
  231. Schematic needed 811a Class A2
  232. Power transformer from Tek545 'oscope
  233. Agape Audio Labs
  234. ETF06 - A century of good sound
  235. I completed my amp!
  236. Overload recovery
  237. Converting SS eq. to Tube
  238. oscillation
  239. Tube preamp with: 1V in and 15Vout???
  240. Electrolytic Cap Search
  241. Bibster's 5687 Linestage, the return
  242. Anyone know anything about Morreto amps?
  243. Determining Output Power
  244. Turn on static?
  245. Estimate power transformer current rate?
  246. Control grid Voltage / grid stoppers...
  247. Horizontal TV tubes used in amplifier?
  248. tube sterio preamp complete
  249. Cons for using instrumentation tube PS for project amp...
  250. Svetlanas site down?

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