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  1. Western Electric 300B
  2. AVVT Tubes
  3. PAS phono. (curcio)
  4. Suitable Transformer for Etude 12B4A
  5. SE tube in mono amp
  6. Pentode current sink - how to connect the control grid?
  7. where are audio equipments in Beijing?
  8. Mullard 3-3 Question
  9. Grounded Grid w/ remote volume
  10. Modifying (Reducing) Screen Voltage
  11. coupling caps
  12. Single Stage Inverting or no?
  13. Using KT88 to build a monster champ amp?
  14. bias arrangements for P-P amps.
  15. Beginner's heaphone amp?
  16. Bridging
  17. Valve circuit in I, Robot
  18. ECC33, 34, 35 tubes?
  19. Help!! any good EL3n Push Pull circuits????
  20. What PP circuit to use for 6SN7 and 2a3?
  21. Stage classification and efficiency
  22. 2x8w SET choice.
  23. 10-15 mu DHT?
  24. Possible computer speaker amp
  25. Help me make a preamp decision
  26. Plitron PAT4006 - advice please
  27. Big valve
  28. Need help with PP pentode design
  29. EQ-circuits.
  30. measuring the power choke inductance confusion
  31. Single-end... which tube?
  32. bias voltage for 6BQ5 plate
  33. Fender Twin
  34. small poweramp with 12AH7 and 6AU6WA...
  35. Layout Check
  36. auto component placer with tube PCB prints
  37. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  38. Audio Electronics Supply AE-1 problems
  39. Cunningham CX 301A
  40. Quicksilver zener diode mod
  41. ELC7? I need help to identify this valve
  42. Spice 3f4 "Koren" models
  43. parallel or push-pull
  44. Isolation
  45. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  46. Magic Gu15
  47. Help identifing RCA transformer
  48. Problem with tube overheating. PLEASE HELP
  49. Battery powered phono.
  50. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  51. converting Heathkit AA-191 to a guitar amp
  52. Has anyone used a triode as a shunt regulator?
  53. EL84 SE design recommendations?
  54. need a good low parts phono tube preamp schematic....
  55. Shunt Feedback - effect on input impedance
  56. searching bogen db10a schematic
  57. Swinging choke?
  58. Schematic help. (thread split)
  59. Playing with a Magic Eye.
  60. A music coming from component.
  61. DIY meeting in Belgium ?
  62. EL34 Push Pull weirdness
  63. Balancing DC-coupled differential stages
  64. Jadis JPS 2 schematic
  65. Leak Stereo20 rebuild ?
  66. Vintage amp rebuild advice
  67. simple 6v6 push-pull schematic ?
  68. valve newbie; 6H1H pre-amp.
  69. Polyprops as cathode bypass
  70. Eventual 300B advice welcome!
  71. Thinking about getting into Tubes, any kit recommendations?
  72. Another Mullard 5-20.
  73. Subbing EL86 (6CW5) for EL84
  74. Valve Warmer/Distortion PCB
  75. Having a problem with building this 6C45 PP amp.
  76. Blue glow in tube. Is the tube dead or not?
  77. Repairing VTL TL2.5
  78. Another ECL86 (integrated this time)
  79. CJ MV55 triode mode
  80. Mullard 20W Amp
  81. Pro Model Tubes,for example Avalon
  82. How to find out which is which????
  83. Matching a preamp to high output impedance source
  84. VSE PP1 driver stage
  85. Thordarson Choke type 1-8C42
  86. Ediswan ECL86 datasheet wanted.
  87. Minimal approach with hybrid rectification: Is this possible?
  88. SS vs. Tube Rectification (and chokes)?
  89. Biasing a guitar amp for distortion
  90. Help wanted on SRPP preamp
  91. New Pas Question no photos
  92. amp-schematic questions...
  93. 5902 subminiature audio pentode
  94. TPP versus PSE.
  95. my fun....
  96. Schematic for Siemens F2a tube amp
  97. Snubber
  98. Which preamp ?
  99. Distortion+low volume..
  100. JJ Tesla
  101. Dynaco Pas
  102. feedback resistor
  103. Grid stoppers?
  104. Transcendent T8 with 12 output tubes
  105. Can anyone recommend a good buffer circuit
  106. happy with my MC-25
  107. A building block approach to valve amp design
  108. math quiz- input z triode amp
  109. Need help in circuit analysis
  110. learning how to do this
  111. 5687 and ccs?
  112. Improving damping factor for OTL
  113. Solid State delay on turn on relay.
  114. output transformer 9030/3
  115. Dynaco MKIII: new power cord
  116. 50C5 add-on amp
  117. Finished my stereo amp!!
  118. spl for 300b, kt88
  119. 2A3 tube review
  120. Audio Transformer Query
  121. Lafayette Phono preamp.
  122. Power transformer help
  123. EL84 SE question
  124. Pop/crackle in one channel
  125. 6GM8 Operating Point
  126. Propper grounding.
  127. EL34 plate glowing?
  128. wavlength audio cardinal
  129. help for tube noob
  130. Placing the powertransformer
  131. Tube audio periodicals
  132. PSU Question
  133. AudioInnovation 400
  134. c3g connections
  135. 6c33c-b Se
  136. tube preamp distortion
  137. What do you guys use to drill holes on chassis??
  138. S.E Problem.Urgent help Please!
  139. 6CA7, El34 or 5881?
  140. svetlana tubes
  141. 18C51 tube help!
  142. Power Tubes
  143. OTL PS question!!
  144. suggestions for the "lowest noise" pentode
  145. drd c3g/300b - help needed
  146. tubecad is back
  147. Happy birthday to tubes. Happy birthday to tubes. !
  148. Anyone used...gulp...kitparts.com?
  149. Grounding the Decware Se84sc
  150. Rogers Cadet III Schematics
  151. OTL amp help
  152. most simple design
  153. modify eagle el84 for guitar
  154. Please verify this circuit, is correct??
  155. EL509 vs EL519
  156. Heathkit AA-181 schematic needed
  157. EF 91 / Z77 Amp? help needed for newbie
  158. buzzing ST-70...plea for help
  159. Zen se-84cs question............
  160. Help with transformer
  161. 211 or EL34Triode?
  162. bootstrapping two SE transformers into a pp one?
  163. Gary Pimm's battery biased mosfet cccs
  164. PSU for SRPP - Voltage or Current Regulator?
  165. MC-30 rebuild, any ideas?
  166. ls-37 MM/MC RIAA Phono Amp from diyclub.biz
  167. Amorphous core transformers only work above 20KHz?
  168. Help with component layout?
  169. Output Transformer Sizing?
  170. PSU worries...
  171. 6BL7 as output tube for low power SE amp?
  172. advice for 6L6GC P-P amp
  173. need some info in a UTC s-16? anyone!
  174. 2A3 power supply transformer
  175. Hi-Bass button
  176. Searching for my first tube amp
  177. Which phono preamp ?
  178. potted transformers
  179. chokes and power supplies
  180. Heathkit A7 ?
  181. Best tweeter amp
  182. Should I use a cathode capacitor in my SE amp?
  183. Help, Just Starting Out
  184. JJ Tesla ECC99 spice model
  185. Newbie to tubes, what can they handle?
  186. Quicksilver rectifier
  187. SE amp question
  188. yaqin mc10k
  189. Hello again, plus a couple of Q`s.
  190. My first home audio amp.
  191. Boostrapping?
  192. KT88 budget- Sovtek, Valve Art, EH?
  193. Tube Bass Amp Schematic
  194. looking for schematic with 6em7 as a driver or...
  195. Multi-Channel Contol Unit
  196. TAD-EL84-STR experience?
  197. OTL question
  198. Good SET for newbie
  199. 6n1p simpl(ish) design
  200. Short list of DIY tube amps with PCBs available...
  201. Parallel feed (choke load) in output stage
  202. Few general question for starter?
  203. winding a simple PP output transformer
  204. Cats prefer 12E1's
  205. Tube vicinity heat problems(maybe?)
  206. Help me design pre-amp PS
  207. Power Amplifier With EL 34
  208. psu design problem
  209. Anyone have info about Jukka Tolonen?
  210. What do you think about this hybrid amp?
  211. Power supplies in mic tube preamps
  212. Hammond 1629SE
  213. 41 Valve Amp? vs 45
  214. DeWald M-1200
  215. Jansen Bassman 50
  216. Pilot AA-903B Tube Amp
  217. MC225 schematic needed
  218. Can you make a +/- supply with valve rectification ?
  219. Audio Innovations Series 500 problems
  220. Big, Heavy, Tube regulated Lambda Power supply
  221. Audio Note DAC Output Transformer Hookup
  222. Got some tubes, help me properly evaluate them
  223. current flow, which direction?
  224. Tube flashes upon turn on, why?
  225. Odd hum problem
  226. DHT and resistors in parallel w/ heater
  227. Presenting the "Fartbottle" deluxe.
  228. amp mod
  229. Need info about rare Siemens Cf "post tube"
  230. Tube defect - What is the problem.
  231. el84 amp
  232. VIETA A-215 Schematics
  233. 6AR6/6098 ultralinear
  234. Tube kit for beginner
  235. earthing!!!!!!!!!!
  236. Heating only one half of a double triode
  237. Quick question regarding PSU Designer II
  238. calculate +B in EL34 SE triode conect
  239. Help with driver transformer
  240. Tube buffer for a cd player
  241. VSE riaa equalizer phono stage
  242. AC or DC Heater?
  243. looking for a good valve amp to fix
  244. Best operating point for 7044 and 5687
  245. S&B TX102 and preamplier stages
  246. I need help
  247. 6AS7 Mono Block's
  248. Filter/Regulator for B+ Supply
  249. Ecf 83
  250. cheap but good SET amplifier?

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