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

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