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  1. small poweramp with 12AH7 and 6AU6WA...
  2. Layout Check
  3. auto component placer with tube PCB prints
  4. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  5. Audio Electronics Supply AE-1 problems
  6. Cunningham CX 301A
  7. Quicksilver zener diode mod
  8. ELC7? I need help to identify this valve
  9. Spice 3f4 "Koren" models
  10. parallel or push-pull
  11. Isolation
  12. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  13. Magic Gu15
  14. Help identifing RCA transformer
  15. Problem with tube overheating. PLEASE HELP
  16. Battery powered phono.
  17. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  18. converting Heathkit AA-191 to a guitar amp
  19. Has anyone used a triode as a shunt regulator?
  20. EL84 SE design recommendations?
  21. need a good low parts phono tube preamp schematic....
  22. Shunt Feedback - effect on input impedance
  23. searching bogen db10a schematic
  24. Swinging choke?
  25. Schematic help. (thread split)
  26. Playing with a Magic Eye.
  27. A music coming from component.
  28. DIY meeting in Belgium ?
  29. EL34 Push Pull weirdness
  30. Balancing DC-coupled differential stages
  31. Jadis JPS 2 schematic
  32. Leak Stereo20 rebuild ?
  33. Vintage amp rebuild advice
  34. simple 6v6 push-pull schematic ?
  35. valve newbie; 6H1H pre-amp.
  36. Polyprops as cathode bypass
  37. Eventual 300B advice welcome!
  38. Thinking about getting into Tubes, any kit recommendations?
  39. Another Mullard 5-20.
  40. Subbing EL86 (6CW5) for EL84
  41. Valve Warmer/Distortion PCB
  42. Having a problem with building this 6C45 PP amp.
  43. Blue glow in tube. Is the tube dead or not?
  44. Repairing VTL TL2.5
  45. Another ECL86 (integrated this time)
  46. CJ MV55 triode mode
  47. Mullard 20W Amp
  48. Pro Model Tubes,for example Avalon
  49. How to find out which is which????
  50. Matching a preamp to high output impedance source
  51. VSE PP1 driver stage
  52. Thordarson Choke type 1-8C42
  53. Ediswan ECL86 datasheet wanted.
  54. Minimal approach with hybrid rectification: Is this possible?
  55. SS vs. Tube Rectification (and chokes)?
  56. Biasing a guitar amp for distortion
  57. Help wanted on SRPP preamp
  58. New Pas Question no photos
  59. amp-schematic questions...
  60. 5902 subminiature audio pentode
  61. TPP versus PSE.
  62. my fun....
  63. Schematic for Siemens F2a tube amp
  64. Snubber
  65. Which preamp ?
  66. Distortion+low volume..
  67. JJ Tesla
  68. Dynaco Pas
  69. feedback resistor
  70. Grid stoppers?
  71. Transcendent T8 with 12 output tubes
  72. Can anyone recommend a good buffer circuit
  73. happy with my MC-25
  74. A building block approach to valve amp design
  75. math quiz- input z triode amp
  76. Need help in circuit analysis
  77. learning how to do this
  78. 5687 and ccs?
  79. Improving damping factor for OTL
  80. Solid State delay on turn on relay.
  81. output transformer 9030/3
  82. Dynaco MKIII: new power cord
  83. 50C5 add-on amp
  84. Finished my stereo amp!!
  85. spl for 300b, kt88
  86. 2A3 tube review
  87. Audio Transformer Query
  88. Lafayette Phono preamp.
  89. Power transformer help
  90. EL84 SE question
  91. Pop/crackle in one channel
  92. 6GM8 Operating Point
  93. Propper grounding.
  94. EL34 plate glowing?
  95. wavlength audio cardinal
  96. help for tube noob
  97. Placing the powertransformer
  98. Tube audio periodicals
  99. PSU Question
  100. AudioInnovation 400
  101. c3g connections
  102. 6c33c-b Se
  103. tube preamp distortion
  104. What do you guys use to drill holes on chassis??
  105. S.E Problem.Urgent help Please!
  106. 6CA7, El34 or 5881?
  107. svetlana tubes
  108. 18C51 tube help!
  109. Power Tubes
  110. OTL PS question!!
  111. suggestions for the "lowest noise" pentode
  112. drd c3g/300b - help needed
  113. tubecad is back
  114. Happy birthday to tubes. Happy birthday to tubes. !
  115. Anyone used...gulp...kitparts.com?
  116. Grounding the Decware Se84sc
  117. Rogers Cadet III Schematics
  118. OTL amp help
  119. most simple design
  120. modify eagle el84 for guitar
  121. Please verify this circuit, is correct??
  122. EL509 vs EL519
  123. Heathkit AA-181 schematic needed
  124. EF 91 / Z77 Amp? help needed for newbie
  125. buzzing ST-70...plea for help
  126. Zen se-84cs question............
  127. Help with transformer
  128. 211 or EL34Triode?
  129. bootstrapping two SE transformers into a pp one?
  130. Gary Pimm's battery biased mosfet cccs
  131. PSU for SRPP - Voltage or Current Regulator?
  132. MC-30 rebuild, any ideas?
  133. ls-37 MM/MC RIAA Phono Amp from diyclub.biz
  134. Amorphous core transformers only work above 20KHz?
  135. Help with component layout?
  136. Output Transformer Sizing?
  137. PSU worries...
  138. 6BL7 as output tube for low power SE amp?
  139. advice for 6L6GC P-P amp
  140. need some info in a UTC s-16? anyone!
  141. 2A3 power supply transformer
  142. Hi-Bass button
  143. Searching for my first tube amp
  144. Which phono preamp ?
  145. potted transformers
  146. chokes and power supplies
  147. Heathkit A7 ?
  148. Best tweeter amp
  149. Should I use a cathode capacitor in my SE amp?
  150. Help, Just Starting Out
  151. JJ Tesla ECC99 spice model
  152. Newbie to tubes, what can they handle?
  153. Quicksilver rectifier
  154. SE amp question
  155. yaqin mc10k
  156. Hello again, plus a couple of Q`s.
  157. My first home audio amp.
  158. Boostrapping?
  159. KT88 budget- Sovtek, Valve Art, EH?
  160. Tube Bass Amp Schematic
  161. looking for schematic with 6em7 as a driver or...
  162. Multi-Channel Contol Unit
  163. TAD-EL84-STR experience?
  164. OTL question
  165. Good SET for newbie
  166. 6n1p simpl(ish) design
  167. Short list of DIY tube amps with PCBs available...
  168. Parallel feed (choke load) in output stage
  169. Few general question for starter?
  170. winding a simple PP output transformer
  171. Cats prefer 12E1's
  172. Tube vicinity heat problems(maybe?)
  173. Help me design pre-amp PS
  174. Power Amplifier With EL 34
  175. psu design problem
  176. Anyone have info about Jukka Tolonen?
  177. What do you think about this hybrid amp?
  178. Power supplies in mic tube preamps
  179. Hammond 1629SE
  180. 41 Valve Amp? vs 45
  181. DeWald M-1200
  182. Jansen Bassman 50
  183. Pilot AA-903B Tube Amp
  184. MC225 schematic needed
  185. Can you make a +/- supply with valve rectification ?
  186. Audio Innovations Series 500 problems
  187. Big, Heavy, Tube regulated Lambda Power supply
  188. Audio Note DAC Output Transformer Hookup
  189. Got some tubes, help me properly evaluate them
  190. current flow, which direction?
  191. Tube flashes upon turn on, why?
  192. Odd hum problem
  193. DHT and resistors in parallel w/ heater
  194. Presenting the "Fartbottle" deluxe.
  195. amp mod
  196. Need info about rare Siemens Cf "post tube"
  197. Tube defect - What is the problem.
  198. el84 amp
  199. VIETA A-215 Schematics
  200. 6AR6/6098 ultralinear
  201. Tube kit for beginner
  202. earthing!!!!!!!!!!
  203. Heating only one half of a double triode
  204. Quick question regarding PSU Designer II
  205. calculate +B in EL34 SE triode conect
  206. Help with driver transformer
  207. Tube buffer for a cd player
  208. VSE riaa equalizer phono stage
  209. AC or DC Heater?
  210. looking for a good valve amp to fix
  211. Best operating point for 7044 and 5687
  212. S&B TX102 and preamplier stages
  213. I need help
  214. 6AS7 Mono Block's
  215. Filter/Regulator for B+ Supply
  216. Ecf 83
  217. cheap but good SET amplifier?
  218. DRD calculator
  219. Luxkit A1020 need help!!!
  220. Sophia Electric™ 300B 2.5V Mesh Plate Tubes
  221. benifits of auto bias
  222. KR Enterprice
  223. Preamp Boards From Hong Kong
  224. earthing
  225. Best sounding medium priced EL34 tube?
  226. 6CA5 Rectifier - B2Spice Model
  227. Help needed for a 6L6 Push pull amp
  228. constant current filament regs
  229. 6SN7 Basics (Newbie)
  230. Anyone tried the EH fat bottle 6CA7?
  231. TJ Tubes
  232. My tubes are going down. HELP !!!!
  233. Tino Zottola...where are you ?
  234. Lilliput amp
  235. filament rails
  236. Ss Diodes??
  237. Tube mic preamp
  238. CCS Filament Regulators for split filaments
  239. Quicksilver 8417 power supply caps?
  240. Audio Research LS7
  241. simple valve preamp
  242. valve preamp
  243. stand by switch or not?
  244. Omega Grand 6 and which amp?
  245. Line amp to speakers
  246. a bit more bass?
  247. Output transformer application help please.
  248. 5687 pre...some problems
  249. Recommendations needed for designs of PP pentode strapped as Triode
  250. KT88 push pull noob questions (sry)

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