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  1. amp input cap for crossover
  2. Audio Transformer/Cathode Feedback Info
  3. Determining cathode resistor
  4. Tube Pin Schematic Question
  5. Best looking tube?
  6. Identifying Stancor Power transformers
  7. HT crowbar
  8. "Bevois Valley" in triode, what to do with the feedback?
  9. Purple Glow
  10. When to use a grid leak resistor?
  11. Mcintosh MA 2275
  12. Blowing output transformer
  13. Kenwood KW-44 hum
  14. Tube system for classical audio
  15. Novel method to reduce filament hum in SE Amp?
  16. Help with 6SN7 w/ CCS
  17. Fisher X-101-D
  18. best tube (not amp)
  19. ML4/ML6 British triode
  20. transformer rubbish
  21. Identifying output transformer leads
  22. Grounding Aikido and F4
  23. Determining ratings for unknown Power Transformers
  24. Tube heaven - or tube hell?
  25. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  26. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  27. SE cathode bias question
  28. k-12G / K-12M with 4 Ohm speakers
  29. About united electron tube
  30. 6c33c-b & 6c33c-v
  31. would like a substitute for Sowter 3575-C
  32. My first tube project WIP
  33. Tube rectifiede +- supply...
  34. the buzzing from amplifiers
  35. MC prepre with submini tubes
  36. 12AU7 Preamp build
  37. Bias/ Plate dissipation question
  38. Has anyone screen driven an EL84?
  39. tube pre amp for phone stage
  40. 6080 se cathode follower
  41. Amplifier suggestions for EPA OPT please
  42. Which tube? How much power can it produce?
  43. Graaf GM20 mods - help!
  44. xpp amplifier question
  45. 520v in PP UL...?
  46. New ST-70 blowing 3 amp slow blow fuse
  47. Was There a Heathkit W-1M or WM?
  48. 8ohm speakers 4ohm tap
  49. Upgrading the Conrad Johnson Premier Fourteen preamp
  50. Noob's first build !!!!
  51. 6sf5gt ??
  52. Measuring technics practical, the allaround reference method?
  53. 2A3 or KT88 ?
  54. What to build with these tubes?
  55. line output transformer help
  56. 6L6GC Options and Flavors
  57. Chinese Buffer Amp, Useful?
  58. 6C33C SE Amp - Ideas on refinement?
  59. 6BM8 Equivalent
  60. Newbie wants to rebuild a Stromberg Carlson ASR-433
  61. RH84 questions
  62. VTL Manley 807 push pull ultra linear
  63. Seeking Pentode-Triode with a 12AX7 half...
  64. Modern tube amplifier designs?
  65. 6n6p transformer output impedance
  66. 814 triode curves
  67. Bias Question
  68. Building a variac
  69. Is my 300B tube dead?
  70. One channel quiet - any bright ideas?
  71. Saw them coming (stupid prices on ebay)
  72. EL36/6CM5 pp design critique
  73. Driving Raven R2 with tubes
  74. Does Anyone Know What This Is?
  75. Need help with tubes problem...
  76. 6V6GT push pull NFB resistor value
  77. Power cord for single ended triode
  78. Virtual chokes
  79. 12AU7 based preamp hums when output cable is touched!
  80. Possible Test equipment find.
  81. 6ak5-45
  82. Using coax for signal wiring?
  83. Chassis Plate Finish
  84. Schade84
  85. Fisher 800c selenium rectifier pictures
  86. Looking for tips on operating points for tubes in anode follower ...
  87. Transformer in the cathodes ??
  88. Fisher 800c static,crackle
  89. 19J6 replacement
  90. Newbie tube buffer kit
  91. Any recommendations for tube for vari-mu compressor?
  92. AMC CVT 3030 Bias Procedure
  93. Anyone used a edcor cxpp100-ms-5k OT
  94. Noisy gain boost
  95. Troubleshooting hum issues with batteries?
  96. Rectifying Heater Supply
  97. tube heater over voltage!please help...
  98. rca 829b bias ? Audioromy 828
  99. 10k winding, 100k pot
  100. What is the definition of a 'good tube'?
  101. 3-stage DC-coupled Ampl
  102. 1946 Philco Tube Receiver
  103. A New Source for James Transformers
  104. Edcor Site Down? Gone? anyone know anything?
  105. How to calculate DRD amps..
  106. PL-519 Tube - Tell me more please...
  107. Need ideas for amp with 2A3, One Electron UBT-3
  108. Favourites discrete brand for tube amp
  109. Pharmicia EPS500/400 Power supply - tube use
  110. Black Art Audio
  111. 12AX7/12BH7 Hammond Tube Preamp Project
  112. Dampen transformer endbells?
  113. Do I have DC on my AC line?
  114. GM-70 cathode feed SE amplifier
  115. Rogers cadet mk 2 newbie project experience required
  116. Mcintosh amps transformer rewinding, help needed please!
  117. Using an output tranny from a stereo for a single-ended amplifier ?
  118. 6336A Single Ended.
  119. UA 175 Urei 175
  120. Morgan Jones 5842 RIAA
  121. Question about current ratings of Hammond 300 series power transformers.
  122. Cathode Windings
  123. Phono stage for 12B4 amp [from previous thread]
  124. Looking for schematic of 26 WOT Preamp
  125. Transformer Lam Questions
  126. Schottky diode bias
  127. ACROSOUND direct-couple EL84 amplifier question
  128. RH807 CCS loaded
  129. Audio Note Kit 1 PSU question
  130. New kt88's or 6550
  131. Bias Supply resistors
  132. Incredible source for used transformers and parts!
  133. Reclaimed Hammond H100 PSU's
  134. Arc Vt-60 Cloned :-)
  135. First Time Pre Amp Build
  136. 845 - Progress so far
  137. Nube challange12AX7 to drive 6C4
  138. 7th harmonic distortion from PP pentodes depends on bias?
  139. West Output Transformers?
  140. Help me design my DAC/Line Preamp.
  141. Hybrid preamp tube problemHi,
  142. Building RH84 SE tube amp.
  143. Question - THD Measrement/Spectrum Analyzis
  144. What to do with TMC tube radio gear?
  145. Easy & Safe & Good sounding gainclone tube buffer
  146. Compactron (31AL10) Head-Scratcher
  147. What cable do you use from input socket to volume pot
  148. problem with 12AE6A buffer
  149. Parafeed dc blocking/coupling cap help
  150. Funky Looking 15DQ8s
  151. 12SN7 vs 7N7 bs 6SN7
  152. Correct Pins For EL84 Triode Strap
  153. Dimensions for anode cap sizes?
  154. Mains transformer help needed please
  155. Tone Stack Challenge
  156. Aikido 6SN7 input 5687 output
  157. FRANK"S 6SN7 preamp/linestage
  158. Pentode grid question...
  159. Hybrid fullwave rectifier
  160. 300B stereo amp project help
  161. EdcorEurope
  162. Can AC wires induce hum in output transformers?
  163. Would you use a 4 ohm tap with these speakers?
  164. Changing grid leak bias preamp to cathode bias
  165. 304tl se amp
  166. 5687 Srpp
  167. Dumb Question Brain is numb today!
  168. What a Deal!
  169. MeiXing MC-805AA biasing
  170. whats a good diy tube preamp kit
  171. SimpleSE parts list
  172. Matched tubes or not matched
  173. wood gnomes really do live in france
  174. Pathos Classic one
  175. A Uk supplier of valve amp kits
  176. Detached getter?
  177. 12B4 Line Stage Amp
  178. How do I control volume on Dynaco ST-70?
  179. A few questions from a total novice.
  180. RCA preamp modification
  181. Bogen Challenger CH8 conversion...newb needs help!
  182. 6AU6A - Micropowered tube amp
  183. Yet another DHT filament supply
  184. where to find 5998 ?
  185. Mcintosh MA 2275 Schematic Required
  186. Help on sonic frontier sf line 1 preamp
  187. Voice of Music Reel-Reel schematic needed
  188. Old radio tubes
  189. Bleeders values and ratings
  190. Tube audio circuit analysis
  191. Audio Research LS15 circuit and description
  192. OPT Trafo
  193. OPT test data?
  194. looking for the top 6080 amp schematics
  195. vu meter
  196. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  197. First Amp Build....!
  198. Will This work?
  199. building a lit up tube display
  200. Push-Pull 6CL5's
  201. 2A3 power adjustments by channel
  202. Dead 12ax7 gain stage - Help...
  203. Best 300B amp schematics
  204. Stuck on Standby
  205. Newbee wants to learn about tube amps, etc...
  206. Recent Ad on Craig's List
  207. Pitfalls to warmup delay in DC coupled multiple railed amps?
  208. jan 6832 sub miniature tube
  209. Anti-Triode SEPP, how to do best?
  210. Some Help with Feedback Please!
  211. Cary 300SEI, likely capacitor failure
  212. Ballast Tube Current Source
  213. Ray Lumley m100 schematic needed
  214. Feedback question
  215. CMRR from parallel heaters?
  216. bevois valley clone from eico hf-12 iron..
  217. 27/37/56/76 plate dissipation
  218. Bell 2420 Amplifier Schematic Needed...
  219. How It Works Video
  220. Have I got this right?
  221. any simple circuits I can add to a dac?
  222. neg feed back into v/slope stereo 2 pre-amp
  223. Using 12AX7 as input with feedback
  224. My first power supply
  225. Unknown tube similar to px4
  226. Anyone know of some ridiculously powerful triodes for class A useage?
  227. Bias Voltage
  228. Looking for tubes in Germany
  229. Substituting GU50 tubes for KT88
  230. Parts mined from an AKAI 1800L, what to do?
  231. Has anyone built this amp??????
  232. Output transformers bandwidth/frequency range
  233. Which power supply would you use?
  234. Mullard Articles
  235. SimpleSE - motor run cap specs
  236. Can I reverse leads on an OT?
  237. 9 pin version of a 6SJ7?
  238. 6550 stock ?
  239. Fisher Tube Tuner Restoration Walkthrough
  240. Futterman H-3
  241. simple 6080/6as7 ppp/circlotron project
  242. My unbalanced preamp problem
  243. Gu50
  244. Any Simple CX310 SE schematics around?
  245. Two EI Power Transformers Orientation?
  246. Question on Hybrid Bridge using 5AR4
  247. Recommend a project for a n00b
  248. Help! el34 8pin to 7pin conversion
  249. Converting Yarland FV-34AIII to Triode and Zero NF
  250. 5U4GB PS question

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