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  1. "Bevois Valley" in triode, what to do with the feedback?
  2. Purple Glow
  3. When to use a grid leak resistor?
  4. Mcintosh MA 2275
  5. Marshall 18W clone (sort of)
  6. Cathode feedback on the simple SE
  7. Blowing output transformer
  8. Kenwood KW-44 hum
  9. Tube system for classical audio
  10. Novel method to reduce filament hum in SE Amp?
  11. Help with 6SN7 w/ CCS
  12. Fisher X-101-D
  13. best tube (not amp)
  14. Simple SE Cap and layout questions???
  15. Simple SE - one channel intermittent problem
  16. ML4/ML6 British triode
  17. transformer rubbish
  18. Identifying output transformer leads
  19. Grounding Aikido and F4
  20. Determining ratings for unknown Power Transformers
  21. Tube heaven - or tube hell?
  22. Fender "Evil Twin" Hi/Low output = same level
  23. Sub amp/speaker to compliment S5 electronics K 12 G tube amp
  24. Troubleshooting hum in 12b4 preamp.. finally almost done!!
  25. SE cathode bias question
  26. k-12G / K-12M with 4 Ohm speakers
  27. About united electron tube
  28. 6c33c-b & 6c33c-v
  29. would like a substitute for Sowter 3575-C
  30. My first tube project WIP
  31. Tube rectifiede +- supply...
  32. the buzzing from amplifiers
  33. MC prepre with submini tubes
  34. 12AU7 Preamp build
  35. Bias/ Plate dissipation question
  36. Has anyone screen driven an EL84?
  37. tube pre amp for phone stage
  38. 6080 se cathode follower
  39. Amplifier suggestions for EPA OPT please
  40. Which tube? How much power can it produce?
  41. Graaf GM20 mods - help!
  42. xpp amplifier question
  43. 520v in PP UL...?
  44. New ST-70 blowing 3 amp slow blow fuse
  45. Was There a Heathkit W-1M or WM?
  46. 8ohm speakers 4ohm tap
  47. Upgrading the Conrad Johnson Premier Fourteen preamp
  48. Noob's first build !!!!
  49. 6sf5gt ??
  50. Measuring technics practical, the allaround reference method?
  51. 2A3 or KT88 ?
  52. What to build with these tubes?
  53. line output transformer help
  54. 6L6GC Options and Flavors
  55. Chinese Buffer Amp, Useful?
  56. 6C33C SE Amp - Ideas on refinement?
  57. 6BM8 Equivalent
  58. Newbie wants to rebuild a Stromberg Carlson ASR-433
  59. RH84 questions
  60. VTL Manley 807 push pull ultra linear
  61. Seeking Pentode-Triode with a 12AX7 half...
  62. Modern tube amplifier designs?
  63. 6n6p transformer output impedance
  64. 814 triode curves
  65. Bias Question
  66. Building a variac
  67. Is my 300B tube dead?
  68. One channel quiet - any bright ideas?
  69. Saw them coming (stupid prices on ebay)
  70. EL36/6CM5 pp design critique
  71. Driving Raven R2 with tubes
  72. Does Anyone Know What This Is?
  73. Need help with tubes problem...
  74. 6V6GT push pull NFB resistor value
  75. Power cord for single ended triode
  76. Virtual chokes
  77. 12AU7 based preamp hums when output cable is touched!
  78. Possible Test equipment find.
  79. 6ak5-45
  80. Using coax for signal wiring?
  81. Chassis Plate Finish
  82. Schade84
  83. Fisher 800c selenium rectifier pictures
  84. Bass amp from spare parts
  85. Looking for tips on operating points for tubes in anode follower ...
  86. Transformer in the cathodes ??
  87. Fisher 800c static,crackle
  88. 19J6 replacement
  89. Newbie tube buffer kit
  90. Simple se parts, all needed?
  91. Any recommendations for tube for vari-mu compressor?
  92. AMC CVT 3030 Bias Procedure
  93. Cascading volumes on a 5C3 amp
  94. Anyone used a edcor cxpp100-ms-5k OT
  95. Noisy gain boost
  96. Troubleshooting hum issues with batteries?
  97. Rectifying Heater Supply
  98. tube heater over voltage!please help...
  99. rca 829b bias ? Audioromy 828
  100. 10k winding, 100k pot
  101. What is the definition of a 'good tube'?
  102. 3-stage DC-coupled Ampl
  103. 1946 Philco Tube Receiver
  104. A New Source for James Transformers
  105. Edcor Site Down? Gone? anyone know anything?
  106. Please suggest practical DIY uses for these BIG oil caps
  107. How to calculate DRD amps..
  108. PL-519 Tube - Tell me more please...
  109. Need ideas for amp with 2A3, One Electron UBT-3
  110. Favourites discrete brand for tube amp
  111. Pharmicia EPS500/400 Power supply - tube use
  112. Black Art Audio
  113. 12AX7/12BH7 Hammond Tube Preamp Project
  114. Dampen transformer endbells?
  115. Do I have DC on my AC line?
  116. GM-70 cathode feed SE amplifier
  117. Rogers cadet mk 2 newbie project experience required
  118. Mcintosh amps transformer rewinding, help needed please!
  119. Using an output tranny from a stereo for a single-ended amplifier ?
  120. 6336A Single Ended.
  121. UA 175 Urei 175
  122. Morgan Jones 5842 RIAA
  123. Question about current ratings of Hammond 300 series power transformers.
  124. Cathode Windings
  125. Phono stage for 12B4 amp [from previous thread]
  126. Looking for schematic of 26 WOT Preamp
  127. Transformer Lam Questions
  128. Schottky diode bias
  129. ACROSOUND direct-couple EL84 amplifier question
  130. RH807 CCS loaded
  131. Audio Note Kit 1 PSU question
  132. B&K 500 Tube Tester Calibration
  133. New kt88's or 6550
  134. Bias Supply resistors
  135. Incredible source for used transformers and parts!
  136. Reclaimed Hammond H100 PSU's
  137. Arc Vt-60 Cloned :-)
  138. First Time Pre Amp Build
  139. Tubelab SE 300B low level hum, help
  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. sweept tubes for simple Se recommendation?
  147. Building RH84 SE tube amp.
  148. Question - THD Measrement/Spectrum Analyzis
  149. What to do with TMC tube radio gear?
  150. Easy & Safe & Good sounding gainclone tube buffer
  151. Compactron (31AL10) Head-Scratcher
  152. blackfacing a twin
  153. What cable do you use from input socket to volume pot
  154. problem with 12AE6A buffer
  155. Adding a master volume to a Fender 5C3 Deluxe
  156. Parafeed dc blocking/coupling cap help
  157. Funky Looking 15DQ8s
  158. 12SN7 vs 7N7 bs 6SN7
  159. Correct Pins For EL84 Triode Strap
  160. Dimensions for anode cap sizes?
  161. Mains transformer help needed please
  162. Tone Stack Challenge
  163. Aikido 6SN7 input 5687 output
  164. FRANK"S 6SN7 preamp/linestage
  165. Pentode grid question...
  166. Channel Switching
  167. Hybrid fullwave rectifier
  168. 300B stereo amp project help
  169. Another Bogen CHB 100 Conversion
  170. EdcorEurope
  171. Can AC wires induce hum in output transformers?
  172. Would you use a 4 ohm tap with these speakers?
  173. Changing grid leak bias preamp to cathode bias
  174. 304tl se amp
  175. 5687 Srpp
  176. Dumb Question Brain is numb today!
  177. What a Deal!
  178. Electrons on Parade
  179. Roll Chart for 6DJ8/6922/7308 on Philco 9100 help
  180. MeiXing MC-805AA biasing
  181. whats a good diy tube preamp kit
  182. Electrons on Parade
  183. SimpleSE parts list
  184. Matched tubes or not matched
  185. wood gnomes really do live in france
  186. Pathos Classic one
  187. A Uk supplier of valve amp kits
  188. Detached getter?
  189. 12B4 Line Stage Amp
  190. How do I control volume on Dynaco ST-70?
  191. A few questions from a total novice.
  192. RCA preamp modification
  193. Bogen Challenger CH8 conversion...newb needs help!
  194. 6AU6A - Micropowered tube amp
  195. Yet another DHT filament supply
  196. where to find 5998 ?
  197. Mcintosh MA 2275 Schematic Required
  198. Help on sonic frontier sf line 1 preamp
  199. Voice of Music Reel-Reel schematic needed
  200. Old radio tubes
  201. 6KN6-PP-guitar slave
  202. Alpha Pots
  203. Bleeders values and ratings
  204. Tube audio circuit analysis
  205. Audio Research LS15 circuit and description
  206. OPT Trafo
  207. OPT test data?
  208. looking for the top 6080 amp schematics
  209. vu meter
  210. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  211. First Amp Build....!
  212. Will This work?
  213. Simple SE hookup wiring
  214. building a lit up tube display
  215. Push-Pull 6CL5's
  216. 2A3 power adjustments by channel
  217. Dead 12ax7 gain stage - Help...
  218. Best 300B amp schematics
  219. Stuck on Standby
  220. Newbee wants to learn about tube amps, etc...
  221. Recent Ad on Craig's List
  222. Pitfalls to warmup delay in DC coupled multiple railed amps?
  223. jan 6832 sub miniature tube
  224. Anti-Triode SEPP, how to do best?
  225. Some Help with Feedback Please!
  226. Cary 300SEI, likely capacitor failure
  227. Ballast Tube Current Source
  228. Ray Lumley m100 schematic needed
  229. Feedback question
  230. CMRR from parallel heaters?
  231. bevois valley clone from eico hf-12 iron..
  232. 27/37/56/76 plate dissipation
  233. Bell 2420 Amplifier Schematic Needed...
  234. How It Works Video
  235. Quad II build for guitar
  236. Have I got this right?
  237. any simple circuits I can add to a dac?
  238. neg feed back into v/slope stereo 2 pre-amp
  239. Using 12AX7 as input with feedback
  240. My first power supply
  241. Unknown tube similar to px4
  242. Anyone know of some ridiculously powerful triodes for class A useage?
  243. Bias Voltage
  244. Looking for tubes in Germany
  245. Substituting GU50 tubes for KT88
  246. Parts mined from an AKAI 1800L, what to do?
  247. Has anyone built this amp??????
  248. Another TubeLab SimpleSE Build
  249. Output transformers bandwidth/frequency range
  250. 6g6 preamp B+ at 400+????

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