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  1. Tube stereo for E 60 including TDA1541 cd player
  2. Theta Amp problem
  3. 12A_7 vs 6SN7EH vs EF86?
  4. Mixing two channels in the preamp or at the phase splitter?
  5. amp input cap for crossover
  6. Audio Transformer/Cathode Feedback Info
  7. Determining cathode resistor
  8. Tube Pin Schematic Question
  9. Best looking tube?
  10. Identifying Stancor Power transformers
  11. HT crowbar
  12. "Bevois Valley" in triode, what to do with the feedback?
  13. Purple Glow
  14. When to use a grid leak resistor?
  15. Mcintosh MA 2275
  16. Blowing output transformer
  17. Kenwood KW-44 hum
  18. Tube system for classical audio
  19. Novel method to reduce filament hum in SE Amp?
  20. Help with 6SN7 w/ CCS
  21. Fisher X-101-D
  22. best tube (not amp)
  23. ML4/ML6 British triode
  24. transformer rubbish
  25. Identifying output transformer leads
  26. Grounding Aikido and F4
  27. Determining ratings for unknown Power Transformers
  28. Tube heaven - or tube hell?
  29. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  30. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  31. SE cathode bias question
  32. k-12G / K-12M with 4 Ohm speakers
  33. About united electron tube
  34. 6c33c-b & 6c33c-v
  35. would like a substitute for Sowter 3575-C
  36. My first tube project WIP
  37. Tube rectifiede +- supply...
  38. the buzzing from amplifiers
  39. MC prepre with submini tubes
  40. 12AU7 Preamp build
  41. Bias/ Plate dissipation question
  42. Has anyone screen driven an EL84?
  43. tube pre amp for phone stage
  44. 6080 se cathode follower
  45. Amplifier suggestions for EPA OPT please
  46. Which tube? How much power can it produce?
  47. Graaf GM20 mods - help!
  48. xpp amplifier question
  49. 520v in PP UL...?
  50. New ST-70 blowing 3 amp slow blow fuse
  51. Was There a Heathkit W-1M or WM?
  52. 8ohm speakers 4ohm tap
  53. Upgrading the Conrad Johnson Premier Fourteen preamp
  54. Noob's first build !!!!
  55. 6sf5gt ??
  56. Measuring technics practical, the allaround reference method?
  57. 2A3 or KT88 ?
  58. What to build with these tubes?
  59. line output transformer help
  60. 6L6GC Options and Flavors
  61. Chinese Buffer Amp, Useful?
  62. 6C33C SE Amp - Ideas on refinement?
  63. 6BM8 Equivalent
  64. Newbie wants to rebuild a Stromberg Carlson ASR-433
  65. RH84 questions
  66. VTL Manley 807 push pull ultra linear
  67. Seeking Pentode-Triode with a 12AX7 half...
  68. Modern tube amplifier designs?
  69. 6n6p transformer output impedance
  70. 814 triode curves
  71. Bias Question
  72. Building a variac
  73. Is my 300B tube dead?
  74. One channel quiet - any bright ideas?
  75. Saw them coming (stupid prices on ebay)
  76. EL36/6CM5 pp design critique
  77. Driving Raven R2 with tubes
  78. Does Anyone Know What This Is?
  79. Need help with tubes problem...
  80. 6V6GT push pull NFB resistor value
  81. Power cord for single ended triode
  82. Virtual chokes
  83. 12AU7 based preamp hums when output cable is touched!
  84. Possible Test equipment find.
  85. 6ak5-45
  86. Using coax for signal wiring?
  87. Chassis Plate Finish
  88. Schade84
  89. Fisher 800c selenium rectifier pictures
  90. Looking for tips on operating points for tubes in anode follower ...
  91. Transformer in the cathodes ??
  92. Fisher 800c static,crackle
  93. 19J6 replacement
  94. Newbie tube buffer kit
  95. Any recommendations for tube for vari-mu compressor?
  96. AMC CVT 3030 Bias Procedure
  97. Anyone used a edcor cxpp100-ms-5k OT
  98. Noisy gain boost
  99. Troubleshooting hum issues with batteries?
  100. Rectifying Heater Supply
  101. tube heater over voltage!please help...
  102. rca 829b bias ? Audioromy 828
  103. 10k winding, 100k pot
  104. What is the definition of a 'good tube'?
  105. 3-stage DC-coupled Ampl
  106. 1946 Philco Tube Receiver
  107. A New Source for James Transformers
  108. Edcor Site Down? Gone? anyone know anything?
  109. How to calculate DRD amps..
  110. PL-519 Tube - Tell me more please...
  111. Need ideas for amp with 2A3, One Electron UBT-3
  112. Favourites discrete brand for tube amp
  113. Pharmicia EPS500/400 Power supply - tube use
  114. Black Art Audio
  115. 12AX7/12BH7 Hammond Tube Preamp Project
  116. Dampen transformer endbells?
  117. Do I have DC on my AC line?
  118. GM-70 cathode feed SE amplifier
  119. Rogers cadet mk 2 newbie project experience required
  120. Mcintosh amps transformer rewinding, help needed please!
  121. Using an output tranny from a stereo for a single-ended amplifier ?
  122. 6336A Single Ended.
  123. UA 175 Urei 175
  124. Morgan Jones 5842 RIAA
  125. Question about current ratings of Hammond 300 series power transformers.
  126. Cathode Windings
  127. Phono stage for 12B4 amp [from previous thread]
  128. Looking for schematic of 26 WOT Preamp
  129. Transformer Lam Questions
  130. Schottky diode bias
  131. ACROSOUND direct-couple EL84 amplifier question
  132. RH807 CCS loaded
  133. Audio Note Kit 1 PSU question
  134. New kt88's or 6550
  135. Bias Supply resistors
  136. Incredible source for used transformers and parts!
  137. Reclaimed Hammond H100 PSU's
  138. Arc Vt-60 Cloned :-)
  139. First Time Pre Amp Build
  140. 845 - Progress so far
  141. Nube challange12AX7 to drive 6C4
  142. 7th harmonic distortion from PP pentodes depends on bias?
  143. West Output Transformers?
  144. Help me design my DAC/Line Preamp.
  145. Hybrid preamp tube problemHi,
  146. Building RH84 SE tube amp.
  147. Question - THD Measrement/Spectrum Analyzis
  148. What to do with TMC tube radio gear?
  149. Easy & Safe & Good sounding gainclone tube buffer
  150. Compactron (31AL10) Head-Scratcher
  151. What cable do you use from input socket to volume pot
  152. problem with 12AE6A buffer
  153. Parafeed dc blocking/coupling cap help
  154. Funky Looking 15DQ8s
  155. 12SN7 vs 7N7 bs 6SN7
  156. Correct Pins For EL84 Triode Strap
  157. Dimensions for anode cap sizes?
  158. Mains transformer help needed please
  159. Tone Stack Challenge
  160. Aikido 6SN7 input 5687 output
  161. FRANK"S 6SN7 preamp/linestage
  162. Pentode grid question...
  163. Hybrid fullwave rectifier
  164. 300B stereo amp project help
  165. EdcorEurope
  166. Can AC wires induce hum in output transformers?
  167. Would you use a 4 ohm tap with these speakers?
  168. Changing grid leak bias preamp to cathode bias
  169. 304tl se amp
  170. 5687 Srpp
  171. Dumb Question Brain is numb today!
  172. What a Deal!
  173. MeiXing MC-805AA biasing
  174. whats a good diy tube preamp kit
  175. SimpleSE parts list
  176. Matched tubes or not matched
  177. wood gnomes really do live in france
  178. Pathos Classic one
  179. A Uk supplier of valve amp kits
  180. Detached getter?
  181. 12B4 Line Stage Amp
  182. How do I control volume on Dynaco ST-70?
  183. A few questions from a total novice.
  184. RCA preamp modification
  185. Bogen Challenger CH8 conversion...newb needs help!
  186. 6AU6A - Micropowered tube amp
  187. Yet another DHT filament supply
  188. where to find 5998 ?
  189. Mcintosh MA 2275 Schematic Required
  190. Help on sonic frontier sf line 1 preamp
  191. Voice of Music Reel-Reel schematic needed
  192. Old radio tubes
  193. Bleeders values and ratings
  194. Tube audio circuit analysis
  195. Audio Research LS15 circuit and description
  196. OPT Trafo
  197. OPT test data?
  198. looking for the top 6080 amp schematics
  199. vu meter
  200. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  201. First Amp Build....!
  202. Will This work?
  203. building a lit up tube display
  204. Push-Pull 6CL5's
  205. 2A3 power adjustments by channel
  206. Dead 12ax7 gain stage - Help...
  207. Best 300B amp schematics
  208. Stuck on Standby
  209. Newbee wants to learn about tube amps, etc...
  210. Recent Ad on Craig's List
  211. Pitfalls to warmup delay in DC coupled multiple railed amps?
  212. jan 6832 sub miniature tube
  213. Anti-Triode SEPP, how to do best?
  214. Some Help with Feedback Please!
  215. Cary 300SEI, likely capacitor failure
  216. Ballast Tube Current Source
  217. Ray Lumley m100 schematic needed
  218. Feedback question
  219. CMRR from parallel heaters?
  220. bevois valley clone from eico hf-12 iron..
  221. 27/37/56/76 plate dissipation
  222. Bell 2420 Amplifier Schematic Needed...
  223. How It Works Video
  224. Have I got this right?
  225. any simple circuits I can add to a dac?
  226. neg feed back into v/slope stereo 2 pre-amp
  227. Using 12AX7 as input with feedback
  228. My first power supply
  229. Unknown tube similar to px4
  230. Anyone know of some ridiculously powerful triodes for class A useage?
  231. Bias Voltage
  232. Looking for tubes in Germany
  233. Substituting GU50 tubes for KT88
  234. Parts mined from an AKAI 1800L, what to do?
  235. Has anyone built this amp??????
  236. Output transformers bandwidth/frequency range
  237. Which power supply would you use?
  238. Mullard Articles
  239. SimpleSE - motor run cap specs
  240. Can I reverse leads on an OT?
  241. 9 pin version of a 6SJ7?
  242. 6550 stock ?
  243. Fisher Tube Tuner Restoration Walkthrough
  244. Futterman H-3
  245. simple 6080/6as7 ppp/circlotron project
  246. My unbalanced preamp problem
  247. Gu50
  248. Any Simple CX310 SE schematics around?
  249. Two EI Power Transformers Orientation?
  250. Question on Hybrid Bridge using 5AR4

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