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  1. surplus 12ax7a
  2. Phase Splitter as input stage
  3. DHT DC heater question
  4. Wanted-Assembly manual for Scott LK-150
  5. Happy new year, sophielove.
  6. Need UTC PVM-3 primary ?
  7. power amp for small studio
  8. Preamp
  9. Problems with EICO HF-12 amp.
  10. Technics SU-30A's schema???
  11. Tube PWM driver
  12. Tungsram tube data
  13. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  14. sharp cutoff pentode
  15. JJ E34L failure(s)
  16. Valve effects loop
  17. Bruce Moore "Companion" - Schematic
  18. CT impedence mismatch?
  19. Tube multiplex adapter parts replacement
  20. SY gets jiggy (5692 measurements)
  21. Tube Drag Racing!
  22. OTL, quick `n dirty
  23. 6V6 stereo amp
  24. humming from amplifier
  25. Mesa boogie
  26. Any tube audiophile in New Dephli, India
  27. What are terminal 1 & 4 of 300B tube
  28. Tube Nube - need advice on Scott LK150
  29. Pentode AB1 or AB2?
  30. #56 tube line stage
  31. **** another unusual hum problem !!
  32. Any comments on Eico HF-14 and HF-85
  33. sensitivities of amplifier configurations
  34. Building a Sun Audio sv 300b Mk II clone
  35. wanted information! vellman vaa-70 tube amp
  36. old tubes, what to do?
  37. Knowledge needed. Need answer to basic yet puzzling question.
  38. tubes 5965A and 5814A
  39. 6s4a as driver for 6as7 in SEAmp
  40. Tube Manufactures Cross references
  41. KT88 vs. KT90 bench test
  42. Variable Voltage Technology(uk) iron
  43. Tutorial: building techniques
  44. Anyone tried UL or Triode connecting the $140 kit ?
  45. Using microphone transformers as phase splitters .
  46. Tube Cooling Recommendations
  47. WE 300B Vs &&&&
  48. Line stage board off from overseas. problems
  49. Volume control for tube amplifier ??
  50. Mro Pt8
  51. looking for se 811 schematics
  52. 6ar5??
  53. bias meter
  54. 829B/3E29 datasheet triodemode
  55. A better triode strap?
  56. outputtransformer data needed
  57. info wanted about a output transformer
  58. WE316a/VT191 triode
  59. electrolytic can capacitor
  60. Bogen DS-225
  61. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  62. 6V6GT and 6L6GT
  63. Unknown vaccumtubes
  64. Milleroux OPT
  65. Tube equalents.
  66. Western Electric 300B
  67. AVVT Tubes
  68. PAS phono. (curcio)
  69. Suitable Transformer for Etude 12B4A
  70. SE tube in mono amp
  71. Pentode current sink - how to connect the control grid?
  72. where are audio equipments in Beijing?
  73. Mullard 3-3 Question
  74. Grounded Grid w/ remote volume
  75. Modifying (Reducing) Screen Voltage
  76. coupling caps
  77. Single Stage Inverting or no?
  78. Using KT88 to build a monster champ amp?
  79. bias arrangements for P-P amps.
  80. Beginner's heaphone amp?
  81. Bridging
  82. Valve circuit in I, Robot
  83. ECC33, 34, 35 tubes?
  84. Help!! any good EL3n Push Pull circuits????
  85. What PP circuit to use for 6SN7 and 2a3?
  86. Stage classification and efficiency
  87. 2x8w SET choice.
  88. 10-15 mu DHT?
  89. Possible computer speaker amp
  90. Help me make a preamp decision
  91. Plitron PAT4006 - advice please
  92. Big valve
  93. Need help with PP pentode design
  94. EQ-circuits.
  95. measuring the power choke inductance confusion
  96. Single-end... which tube?
  97. bias voltage for 6BQ5 plate
  98. Fender Twin
  99. small poweramp with 12AH7 and 6AU6WA...
  100. Layout Check
  101. auto component placer with tube PCB prints
  102. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  103. Audio Electronics Supply AE-1 problems
  104. Cunningham CX 301A
  105. Quicksilver zener diode mod
  106. ELC7? I need help to identify this valve
  107. Spice 3f4 "Koren" models
  108. parallel or push-pull
  109. Isolation
  110. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  111. Magic Gu15
  112. Help identifing RCA transformer
  113. Problem with tube overheating. PLEASE HELP
  114. Battery powered phono.
  115. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  116. converting Heathkit AA-191 to a guitar amp
  117. Has anyone used a triode as a shunt regulator?
  118. EL84 SE design recommendations?
  119. need a good low parts phono tube preamp schematic....
  120. Shunt Feedback - effect on input impedance
  121. searching bogen db10a schematic
  122. Swinging choke?
  123. Schematic help. (thread split)
  124. Playing with a Magic Eye.
  125. A music coming from component.
  126. DIY meeting in Belgium ?
  127. EL34 Push Pull weirdness
  128. Balancing DC-coupled differential stages
  129. Jadis JPS 2 schematic
  130. Leak Stereo20 rebuild ?
  131. Vintage amp rebuild advice
  132. simple 6v6 push-pull schematic ?
  133. valve newbie; 6H1H pre-amp.
  134. Polyprops as cathode bypass
  135. Eventual 300B advice welcome!
  136. Thinking about getting into Tubes, any kit recommendations?
  137. Another Mullard 5-20.
  138. Subbing EL86 (6CW5) for EL84
  139. Valve Warmer/Distortion PCB
  140. Having a problem with building this 6C45 PP amp.
  141. Blue glow in tube. Is the tube dead or not?
  142. Repairing VTL TL2.5
  143. Another ECL86 (integrated this time)
  144. CJ MV55 triode mode
  145. Mullard 20W Amp
  146. Pro Model Tubes,for example Avalon
  147. How to find out which is which????
  148. Matching a preamp to high output impedance source
  149. VSE PP1 driver stage
  150. Thordarson Choke type 1-8C42
  151. Ediswan ECL86 datasheet wanted.
  152. Minimal approach with hybrid rectification: Is this possible?
  153. SS vs. Tube Rectification (and chokes)?
  154. Biasing a guitar amp for distortion
  155. Help wanted on SRPP preamp
  156. New Pas Question no photos
  157. amp-schematic questions...
  158. 5902 subminiature audio pentode
  159. TPP versus PSE.
  160. my fun....
  161. Schematic for Siemens F2a tube amp
  162. Snubber
  163. Which preamp ?
  164. Distortion+low volume..
  165. JJ Tesla
  166. Dynaco Pas
  167. feedback resistor
  168. Grid stoppers?
  169. Transcendent T8 with 12 output tubes
  170. Can anyone recommend a good buffer circuit
  171. happy with my MC-25
  172. A building block approach to valve amp design
  173. math quiz- input z triode amp
  174. Need help in circuit analysis
  175. learning how to do this
  176. 5687 and ccs?
  177. Improving damping factor for OTL
  178. Solid State delay on turn on relay.
  179. output transformer 9030/3
  180. Dynaco MKIII: new power cord
  181. 50C5 add-on amp
  182. Finished my stereo amp!!
  183. spl for 300b, kt88
  184. 2A3 tube review
  185. Audio Transformer Query
  186. Lafayette Phono preamp.
  187. Power transformer help
  188. EL84 SE question
  189. Pop/crackle in one channel
  190. 6GM8 Operating Point
  191. Propper grounding.
  192. EL34 plate glowing?
  193. wavlength audio cardinal
  194. help for tube noob
  195. Placing the powertransformer
  196. Tube audio periodicals
  197. PSU Question
  198. AudioInnovation 400
  199. c3g connections
  200. 6c33c-b Se
  201. tube preamp distortion
  202. What do you guys use to drill holes on chassis??
  203. S.E Problem.Urgent help Please!
  204. 6CA7, El34 or 5881?
  205. svetlana tubes
  206. 18C51 tube help!
  207. Power Tubes
  208. OTL PS question!!
  209. suggestions for the "lowest noise" pentode
  210. drd c3g/300b - help needed
  211. tubecad is back
  212. Happy birthday to tubes. Happy birthday to tubes. !
  213. Anyone used...gulp...kitparts.com?
  214. Grounding the Decware Se84sc
  215. Rogers Cadet III Schematics
  216. OTL amp help
  217. most simple design
  218. modify eagle el84 for guitar
  219. Please verify this circuit, is correct??
  220. EL509 vs EL519
  221. Heathkit AA-181 schematic needed
  222. EF 91 / Z77 Amp? help needed for newbie
  223. buzzing ST-70...plea for help
  224. Zen se-84cs question............
  225. Help with transformer
  226. 211 or EL34Triode?
  227. bootstrapping two SE transformers into a pp one?
  228. Gary Pimm's battery biased mosfet cccs
  229. PSU for SRPP - Voltage or Current Regulator?
  230. MC-30 rebuild, any ideas?
  231. ls-37 MM/MC RIAA Phono Amp from diyclub.biz
  232. Amorphous core transformers only work above 20KHz?
  233. Help with component layout?
  234. Output Transformer Sizing?
  235. PSU worries...
  236. 6BL7 as output tube for low power SE amp?
  237. advice for 6L6GC P-P amp
  238. need some info in a UTC s-16? anyone!
  239. 2A3 power supply transformer
  240. Hi-Bass button
  241. Searching for my first tube amp
  242. Which phono preamp ?
  243. potted transformers
  244. chokes and power supplies
  245. Heathkit A7 ?
  246. Best tweeter amp
  247. Should I use a cathode capacitor in my SE amp?
  248. Help, Just Starting Out
  249. JJ Tesla ECC99 spice model
  250. Newbie to tubes, what can they handle?

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