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  1. What is this?
  2. What's A "Timber bulb"?
  3. aikido/807PSE and local feedback
  4. Repairing paper in oil caps.
  5. Optoisolator compressor ideas
  6. Airgap for filament transformer ?
  7. Tube stereo for E 60 including TDA1541 cd player
  8. Bad Boy amplifier Tubelab.com style
  9. is there a typo in the Tubelab SE schematic?
  10. Theta Amp problem
  11. 12A_7 vs 6SN7EH vs EF86?
  12. Mixing two channels in the preamp or at the phase splitter?
  13. amp input cap for crossover
  14. Audio Transformer/Cathode Feedback Info
  15. Determining cathode resistor
  16. Tube Pin Schematic Question
  17. Simple SE blowing fuses
  18. Best looking tube?
  19. Identifying Stancor Power transformers
  20. HT crowbar
  21. "Bevois Valley" in triode, what to do with the feedback?
  22. Purple Glow
  23. When to use a grid leak resistor?
  24. Mcintosh MA 2275
  25. Marshall 18W clone (sort of)
  26. Cathode feedback on the simple SE
  27. Blowing output transformer
  28. Kenwood KW-44 hum
  29. Tube system for classical audio
  30. Novel method to reduce filament hum in SE Amp?
  31. Help with 6SN7 w/ CCS
  32. Fisher X-101-D
  33. best tube (not amp)
  34. Simple SE Cap and layout questions???
  35. Simple SE - one channel intermittent problem
  36. ML4/ML6 British triode
  37. transformer rubbish
  38. Identifying output transformer leads
  39. Grounding Aikido and F4
  40. Determining ratings for unknown Power Transformers
  41. Tube heaven - or tube hell?
  42. Fender "Evil Twin" Hi/Low output = same level
  43. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  44. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  45. SE cathode bias question
  46. k-12G / K-12M with 4 Ohm speakers
  47. About united electron tube
  48. 6c33c-b & 6c33c-v
  49. would like a substitute for Sowter 3575-C
  50. My first tube project WIP
  51. Tube rectifiede +- supply...
  52. the buzzing from amplifiers
  53. MC prepre with submini tubes
  54. 12AU7 Preamp build
  55. Bias/ Plate dissipation question
  56. Has anyone screen driven an EL84?
  57. tube pre amp for phone stage
  58. 6080 se cathode follower
  59. Amplifier suggestions for EPA OPT please
  60. Which tube? How much power can it produce?
  61. Graaf GM20 mods - help!
  62. xpp amplifier question
  63. 520v in PP UL...?
  64. New ST-70 blowing 3 amp slow blow fuse
  65. Was There a Heathkit W-1M or WM?
  66. 8ohm speakers 4ohm tap
  67. Upgrading the Conrad Johnson Premier Fourteen preamp
  68. Noob's first build !!!!
  69. 6sf5gt ??
  70. Measuring technics practical, the allaround reference method?
  71. 2A3 or KT88 ?
  72. What to build with these tubes?
  73. line output transformer help
  74. 6L6GC Options and Flavors
  75. Chinese Buffer Amp, Useful?
  76. 6C33C SE Amp - Ideas on refinement?
  77. 6BM8 Equivalent
  78. Newbie wants to rebuild a Stromberg Carlson ASR-433
  79. RH84 questions
  80. VTL Manley 807 push pull ultra linear
  81. Seeking Pentode-Triode with a 12AX7 half...
  82. Modern tube amplifier designs?
  83. 6n6p transformer output impedance
  84. 814 triode curves
  85. Bias Question
  86. Building a variac
  87. Is my 300B tube dead?
  88. One channel quiet - any bright ideas?
  89. Saw them coming (stupid prices on ebay)
  90. EL36/6CM5 pp design critique
  91. Driving Raven R2 with tubes
  92. Does Anyone Know What This Is?
  93. Need help with tubes problem...
  94. 6V6GT push pull NFB resistor value
  95. Power cord for single ended triode
  96. Virtual chokes
  97. 12AU7 based preamp hums when output cable is touched!
  98. Possible Test equipment find.
  99. 6ak5-45
  100. Using coax for signal wiring?
  101. Chassis Plate Finish
  102. Schade84
  103. Fisher 800c selenium rectifier pictures
  104. Bass amp from spare parts
  105. Looking for tips on operating points for tubes in anode follower ...
  106. Transformer in the cathodes ??
  107. Fisher 800c static,crackle
  108. 19J6 replacement
  109. Newbie tube buffer kit
  110. Simple se parts, all needed?
  111. Any recommendations for tube for vari-mu compressor?
  112. AMC CVT 3030 Bias Procedure
  113. Cascading volumes on a 5C3 amp
  114. Anyone used a edcor cxpp100-ms-5k OT
  115. Noisy gain boost
  116. Troubleshooting hum issues with batteries?
  117. Rectifying Heater Supply
  118. tube heater over voltage!please help...
  119. rca 829b bias ? Audioromy 828
  120. 10k winding, 100k pot
  121. What is the definition of a 'good tube'?
  122. 3-stage DC-coupled Ampl
  123. 1946 Philco Tube Receiver
  124. A New Source for James Transformers
  125. Edcor Site Down? Gone? anyone know anything?
  126. Please suggest practical DIY uses for these BIG oil caps
  127. How to calculate DRD amps..
  128. PL-519 Tube - Tell me more please...
  129. Need ideas for amp with 2A3, One Electron UBT-3
  130. Favourites discrete brand for tube amp
  131. Pharmicia EPS500/400 Power supply - tube use
  132. Black Art Audio
  133. 12AX7/12BH7 Hammond Tube Preamp Project
  134. Dampen transformer endbells?
  135. Do I have DC on my AC line?
  136. GM-70 cathode feed SE amplifier
  137. Rogers cadet mk 2 newbie project experience required
  138. Mcintosh amps transformer rewinding, help needed please!
  139. Using an output tranny from a stereo for a single-ended amplifier ?
  140. 6336A Single Ended.
  141. UA 175 Urei 175
  142. Morgan Jones 5842 RIAA
  143. Question about current ratings of Hammond 300 series power transformers.
  144. Cathode Windings
  145. Phono stage for 12B4 amp [from previous thread]
  146. Looking for schematic of 26 WOT Preamp
  147. Transformer Lam Questions
  148. Schottky diode bias
  149. ACROSOUND direct-couple EL84 amplifier question
  150. RH807 CCS loaded
  151. Audio Note Kit 1 PSU question
  152. B&K 500 Tube Tester Calibration
  153. New kt88's or 6550
  154. Bias Supply resistors
  155. Incredible source for used transformers and parts!
  156. Reclaimed Hammond H100 PSU's
  157. Arc Vt-60 Cloned :-)
  158. First Time Pre Amp Build
  159. Tubelab SE 300B low level hum, help
  160. 845 - Progress so far
  161. Nube challange12AX7 to drive 6C4
  162. 7th harmonic distortion from PP pentodes depends on bias?
  163. West Output Transformers?
  164. Help me design my DAC/Line Preamp.
  165. Hybrid preamp tube problemHi,
  166. sweept tubes for simple Se recommendation?
  167. Building RH84 SE tube amp.
  168. Question - THD Measrement/Spectrum Analyzis
  169. What to do with TMC tube radio gear?
  170. Easy & Safe & Good sounding gainclone tube buffer
  171. Compactron (31AL10) Head-Scratcher
  172. blackfacing a twin
  173. What cable do you use from input socket to volume pot
  174. problem with 12AE6A buffer
  175. Adding a master volume to a Fender 5C3 Deluxe
  176. Parafeed dc blocking/coupling cap help
  177. Funky Looking 15DQ8s
  178. 12SN7 vs 7N7 bs 6SN7
  179. Correct Pins For EL84 Triode Strap
  180. Dimensions for anode cap sizes?
  181. Mains transformer help needed please
  182. Tone Stack Challenge
  183. Aikido 6SN7 input 5687 output
  184. FRANK"S 6SN7 preamp/linestage
  185. Pentode grid question...
  186. Channel Switching
  187. Hybrid fullwave rectifier
  188. 300B stereo amp project help
  189. Another Bogen CHB 100 Conversion
  190. EdcorEurope
  191. Can AC wires induce hum in output transformers?
  192. Would you use a 4 ohm tap with these speakers?
  193. Changing grid leak bias preamp to cathode bias
  194. 304tl se amp
  195. 5687 Srpp
  196. Dumb Question Brain is numb today!
  197. What a Deal!
  198. Electrons on Parade
  199. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  200. MeiXing MC-805AA biasing
  201. whats a good diy tube preamp kit
  202. Electrons on Parade
  203. SimpleSE parts list
  204. Matched tubes or not matched
  205. wood gnomes really do live in france
  206. Pathos Classic one
  207. A Uk supplier of valve amp kits
  208. Detached getter?
  209. 12B4 Line Stage Amp
  210. How do I control volume on Dynaco ST-70?
  211. A few questions from a total novice.
  212. RCA preamp modification
  213. Bogen Challenger CH8 conversion...newb needs help!
  214. 6AU6A - Micropowered tube amp
  215. Yet another DHT filament supply
  216. where to find 5998 ?
  217. Mcintosh MA 2275 Schematic Required
  218. Help on sonic frontier sf line 1 preamp
  219. Voice of Music Reel-Reel schematic needed
  220. Old radio tubes
  221. 6KN6-PP-guitar slave
  222. Alpha Pots
  223. Bleeders values and ratings
  224. Tube audio circuit analysis
  225. Audio Research LS15 circuit and description
  226. OPT Trafo
  227. OPT test data?
  228. looking for the top 6080 amp schematics
  229. vu meter
  230. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  231. First Amp Build....!
  232. Will This work?
  233. Simple SE hookup wiring
  234. building a lit up tube display
  235. Push-Pull 6CL5's
  236. 2A3 power adjustments by channel
  237. Dead 12ax7 gain stage - Help...
  238. Best 300B amp schematics
  239. Stuck on Standby
  240. Newbee wants to learn about tube amps, etc...
  241. Recent Ad on Craig's List
  242. Pitfalls to warmup delay in DC coupled multiple railed amps?
  243. jan 6832 sub miniature tube
  244. Anti-Triode SEPP, how to do best?
  245. Some Help with Feedback Please!
  246. Cary 300SEI, likely capacitor failure
  247. Ballast Tube Current Source
  248. Ray Lumley m100 schematic needed
  249. Feedback question
  250. CMRR from parallel heaters?

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