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  1. Tubes and magnetic fields
  2. Driver tube for 45 interstage 1:1
  3. 89 db is it enough ?
  4. Troubl-shooting heater voltage for filament
  5. arcing in rectifier tube
  6. 1/8" Aluminum for top plate?
  7. Shopping list
  8. 6sn7 valves
  9. Neon flashes with the music
  10. Help in SE 807 amp
  11. naim user defects to valves !
  12. tamura opt need help
  13. Line stage question
  14. Tube question, how to read the difference.
  15. What Tube amp for Biginner?
  16. Leak Stereo 20 rebuild/restore question
  17. Is there any advantage in using preamp tubes in output stages ??
  18. 12b4 as PP output tubes
  19. Valves stripped bare….
  20. Anybody know this TUBE?
  21. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  22. Need help understanding something about UL stages
  23. I'd like to make a simple 50 amplifier
  24. gates tube pre-amp info??
  25. OT - To those who correspond with me....
  26. Could use info on Grommes + knight.
  27. Single Ended Ultra linear, anyone built one?
  28. Audio Innovations 800 Anniversary problem
  29. Transformer coupled 6SN7 push-pull DAC output stage?
  30. Vkh max voltage
  31. Mosfet differences with valves
  32. Need schematic - Audio Research LS2B MKII
  33. EL84M specs.
  34. What to do with these?
  35. Dyna Mk IV Driver Boards
  36. OTL driving series arrays
  37. Voltage problem
  38. Amp intermittently blowing fuse at power up
  39. Worlds Best Preamp
  40. Heathkit TT-1A Calibration
  41. surplus 12ax7a
  42. Phase Splitter as input stage
  43. DHT DC heater question
  44. Wanted-Assembly manual for Scott LK-150
  45. Happy new year, sophielove.
  46. Need UTC PVM-3 primary ?
  47. power amp for small studio
  48. Preamp
  49. Problems with EICO HF-12 amp.
  50. Technics SU-30A's schema???
  51. Tube PWM driver
  52. Tungsram tube data
  53. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  54. sharp cutoff pentode
  55. JJ E34L failure(s)
  56. Valve effects loop
  57. Bruce Moore "Companion" - Schematic
  58. CT impedence mismatch?
  59. Tube multiplex adapter parts replacement
  60. SY gets jiggy (5692 measurements)
  61. Tube Drag Racing!
  62. OTL, quick `n dirty
  63. 6V6 stereo amp
  64. humming from amplifier
  65. Any tube audiophile in New Dephli, India
  66. What are terminal 1 & 4 of 300B tube
  67. Tube Nube - need advice on Scott LK150
  68. Pentode AB1 or AB2?
  69. #56 tube line stage
  70. **** another unusual hum problem !!
  71. Any comments on Eico HF-14 and HF-85
  72. sensitivities of amplifier configurations
  73. Building a Sun Audio sv 300b Mk II clone
  74. wanted information! vellman vaa-70 tube amp
  75. old tubes, what to do?
  76. Knowledge needed. Need answer to basic yet puzzling question.
  77. tubes 5965A and 5814A
  78. 6s4a as driver for 6as7 in SEAmp
  79. Tube Manufactures Cross references
  80. KT88 vs. KT90 bench test
  81. Variable Voltage Technology(uk) iron
  82. Tutorial: building techniques
  83. Anyone tried UL or Triode connecting the $140 kit ?
  84. Using microphone transformers as phase splitters .
  85. Tube Cooling Recommendations
  86. WE 300B Vs &&&&
  87. Line stage board off from overseas. problems
  88. Volume control for tube amplifier ??
  89. Mro Pt8
  90. looking for se 811 schematics
  91. 6ar5??
  92. bias meter
  93. 829B/3E29 datasheet triodemode
  94. A better triode strap?
  95. outputtransformer data needed
  96. info wanted about a output transformer
  97. WE316a/VT191 triode
  98. electrolytic can capacitor
  99. Bogen DS-225
  100. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  101. 6V6GT and 6L6GT
  102. Unknown vaccumtubes
  103. Milleroux OPT
  104. Tube equalents.
  105. Western Electric 300B
  106. AVVT Tubes
  107. PAS phono. (curcio)
  108. Suitable Transformer for Etude 12B4A
  109. SE tube in mono amp
  110. Pentode current sink - how to connect the control grid?
  111. where are audio equipments in Beijing?
  112. Mullard 3-3 Question
  113. Grounded Grid w/ remote volume
  114. Modifying (Reducing) Screen Voltage
  115. coupling caps
  116. Single Stage Inverting or no?
  117. bias arrangements for P-P amps.
  118. Beginner's heaphone amp?
  119. Bridging
  120. Valve circuit in I, Robot
  121. ECC33, 34, 35 tubes?
  122. Help!! any good EL3n Push Pull circuits????
  123. What PP circuit to use for 6SN7 and 2a3?
  124. Stage classification and efficiency
  125. 2x8w SET choice.
  126. 10-15 mu DHT?
  127. Possible computer speaker amp
  128. Help me make a preamp decision
  129. Plitron PAT4006 - advice please
  130. Big valve
  131. Need help with PP pentode design
  132. EQ-circuits.
  133. measuring the power choke inductance confusion
  134. Single-end... which tube?
  135. bias voltage for 6BQ5 plate
  136. small poweramp with 12AH7 and 6AU6WA...
  137. Layout Check
  138. auto component placer with tube PCB prints
  139. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  140. Audio Electronics Supply AE-1 problems
  141. Cunningham CX 301A
  142. Quicksilver zener diode mod
  143. ELC7? I need help to identify this valve
  144. Spice 3f4 "Koren" models
  145. parallel or push-pull
  146. Isolation
  147. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  148. Magic Gu15
  149. Help identifing RCA transformer
  150. Problem with tube overheating. PLEASE HELP
  151. Battery powered phono.
  152. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  153. Has anyone used a triode as a shunt regulator?
  154. EL84 SE design recommendations?
  155. need a good low parts phono tube preamp schematic....
  156. Shunt Feedback - effect on input impedance
  157. searching bogen db10a schematic
  158. Swinging choke?
  159. Schematic help. (thread split)
  160. Playing with a Magic Eye.
  161. A music coming from component.
  162. DIY meeting in Belgium ?
  163. EL34 Push Pull weirdness
  164. Balancing DC-coupled differential stages
  165. Jadis JPS 2 schematic
  166. Leak Stereo20 rebuild ?
  167. Vintage amp rebuild advice
  168. simple 6v6 push-pull schematic ?
  169. valve newbie; 6H1H pre-amp.
  170. Polyprops as cathode bypass
  171. Eventual 300B advice welcome!
  172. Thinking about getting into Tubes, any kit recommendations?
  173. Another Mullard 5-20.
  174. Subbing EL86 (6CW5) for EL84
  175. Valve Warmer/Distortion PCB
  176. Having a problem with building this 6C45 PP amp.
  177. Blue glow in tube. Is the tube dead or not?
  178. Repairing VTL TL2.5
  179. Another ECL86 (integrated this time)
  180. CJ MV55 triode mode
  181. Mullard 20W Amp
  182. Pro Model Tubes,for example Avalon
  183. How to find out which is which????
  184. Matching a preamp to high output impedance source
  185. VSE PP1 driver stage
  186. Thordarson Choke type 1-8C42
  187. Ediswan ECL86 datasheet wanted.
  188. Minimal approach with hybrid rectification: Is this possible?
  189. SS vs. Tube Rectification (and chokes)?
  190. Help wanted on SRPP preamp
  191. New Pas Question no photos
  192. amp-schematic questions...
  193. 5902 subminiature audio pentode
  194. TPP versus PSE.
  195. my fun....
  196. Schematic for Siemens F2a tube amp
  197. Snubber
  198. Which preamp ?
  199. Distortion+low volume..
  200. JJ Tesla
  201. Dynaco Pas
  202. feedback resistor
  203. Grid stoppers?
  204. Transcendent T8 with 12 output tubes
  205. Can anyone recommend a good buffer circuit
  206. happy with my MC-25
  207. A building block approach to valve amp design
  208. math quiz- input z triode amp
  209. Need help in circuit analysis
  210. learning how to do this
  211. 5687 and ccs?
  212. Improving damping factor for OTL
  213. Solid State delay on turn on relay.
  214. output transformer 9030/3
  215. Dynaco MKIII: new power cord
  216. 50C5 add-on amp
  217. Finished my stereo amp!!
  218. spl for 300b, kt88
  219. 2A3 tube review
  220. Audio Transformer Query
  221. Lafayette Phono preamp.
  222. Power transformer help
  223. EL84 SE question
  224. Pop/crackle in one channel
  225. 6GM8 Operating Point
  226. Propper grounding.
  227. EL34 plate glowing?
  228. wavlength audio cardinal
  229. help for tube noob
  230. Placing the powertransformer
  231. Tube audio periodicals
  232. PSU Question
  233. AudioInnovation 400
  234. c3g connections
  235. 6c33c-b Se
  236. tube preamp distortion
  237. What do you guys use to drill holes on chassis??
  238. S.E Problem.Urgent help Please!
  239. 6CA7, El34 or 5881?
  240. svetlana tubes
  241. 18C51 tube help!
  242. Power Tubes
  243. OTL PS question!!
  244. suggestions for the "lowest noise" pentode
  245. drd c3g/300b - help needed
  246. tubecad is back
  247. Happy birthday to tubes. Happy birthday to tubes. !
  248. Anyone used...gulp...kitparts.com?
  249. Grounding the Decware Se84sc
  250. Rogers Cadet III Schematics

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