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  1. Hammond SE Transformer question
  2. Tube Safety
  3. old console
  4. AB1 or 2?
  5. help with restoring amp
  6. Tube preamplifier with PCC88
  7. Tube amplifier 300b proyect
  8. linestage needed
  9. 5687 Tube - best choice
  10. Fisher 500c - Trouble shooting tuner section
  11. Morgan Jones book to swap
  12. gu-48 PP
  13. Taylor 45b Gm Problem
  14. 5687, ECC99, 7119, or E182CC??
  15. Bell Sound Systems Old Gem
  16. Mu-follower current capability?
  17. Filaments voltage question
  18. Is it Good to regulate supplies?
  19. Damper Diodes
  20. Fisher X-100 transformers
  21. Some questions about C4S CCS adjustment.
  22. Lowther LL18S stereo power amplifier - circuit diagram?
  23. Problem with mouting choke underneath chassis?
  24. How accurate is RMAA distortion measurement?
  25. 801
  26. CROFT Eminent Audio
  27. Any good flea-watt SET designs?
  28. PTP wiring
  29. switching regulators
  30. Push Pull Power supply. to Tube or not to?
  31. Kepco 615B Bench Supply pix
  32. Standart gains and voltage levels for standart audio eq
  33. How do I measure OPT impedance?
  34. Using TFA 204 transformers for SE EL84?
  35. Help on 311-CH triode tube
  36. Shots of my GG pre amp!!
  37. 6C45Pi Microphone Preamp
  38. cf topology lessons... pls help
  39. Father's Cousin Louis's vintage 1920+ collection pictures!
  40. Tube Newbie needs help
  41. Need help
  42. Zytron Tubes
  43. Hapi2 Preamp
  44. Svetlana Cryo Tubes For Wave 8's
  45. Audio Note Preamp Circuit a good guess...
  46. Which one is the better design?
  47. Lab Power Supply for Glass Audio
  48. A joke?
  49. Need Advice on new Amp
  50. Using the 7591 or 7868
  51. Schematic of Audio Research VT 100
  52. Hermetically sealed Oil Filled resistors!
  53. Pre Amp schematic Audio Note M1
  54. opt impedance
  55. Schematic for Bogen DB130 ?
  56. SRPP Help Needed
  57. Schematic for Bogen DB130 ?
  58. Hot tube
  59. 6L6 Design Phase
  60. High Power Single Ended Amplifier Club
  61. Suggestions please..
  62. These are the best looking tube amps I have ever seen
  63. Sylvania News
  64. Will this work? "Mixed" 300B PPP IT
  65. Whats a Good 6L6 circuit?
  66. Circlotron amps
  67. Mods on leak stereo 20
  68. When do the tubes have a fever?
  69. psu problem
  70. earthing
  71. 6V6 SET amp with 6SN7 driver
  72. 6n1p pre with active load
  73. buy tubes in the EU
  74. Neutral AC wave on O'scope
  75. Running power to tubes so as not to effect the audio signal
  76. el34 se schematic opinion
  77. EF86
  78. A Rimbaldi amp?
  79. SE or PP?
  80. PP 807's
  81. CCS loading first stage of DC coupled driver
  82. Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7.
  83. Film cap's
  84. Goertz: amp killer? or where to fix my Audio Research VSi55?
  85. help finding a good amp project?
  86. Yet another valve pre, comments?!
  87. Source for round and/or square transformer covers ??
  88. Some questions!
  89. filament source connection to DHT
  90. Use tubes for 2000V. power supply,
  91. mu / srpp / or CF?
  92. dB into voltage gain????
  93. Building a Tube Mic Pre
  94. Negative Voltage using tube rectifier?
  95. Reichert info
  96. really basic question
  97. Has anybody built 6BG6 or similar OTL amp?
  98. Old OP Transformer
  99. Need Advice, 820vct tranny?
  100. 811a Tube Cap Size
  101. need help with (now) not-working amp
  102. How about this 12au7 pre?
  103. SV811-3 SE : Lots of questions...
  104. Criticise please!
  105. 6n3p = ECC85 ???
  106. Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp
  107. grid bias
  108. 12AT7 poweramp specs?
  109. valve pre amp
  110. what is the simplest possible triode amp?
  111. poweramp topology
  112. limits in transient time
  113. OPT Design
  114. Would this work
  115. manley pre schematic
  116. Heathkit FM3A
  117. Aleph-type CCS as plate load?
  118. Talbot Wright's Williamson mod (Heathkit W3-AM)
  119. Conrad-Johnson PV6 Preamp
  120. MC275 OPT manual rewinding
  121. Newbie asking help
  122. converting EF86 to take 12AX7
  123. 5814/12AU7 Preamp?
  124. Grounded Grid pre amp-- help please
  125. Tube output indicator - EM84 or 6AF6G
  126. suggest circuit with gain of 60
  127. ready to mod the hell out of my asl wave 8's
  128. My First DIY - need big help!
  129. rectifier tube question
  130. Newbie with Tannoy grfs, helpme to choice a good amp to them.
  131. Mullard CV 4109 tube
  132. Pre PS Improvements?
  133. 6n7gt+300b
  134. Calculating DC coupled Single Ended Valve Amplifiers - Part #1
  135. 12ax7 preamp,need help.
  136. tube datasheets and amp sch
  137. How to check output transformers ?
  138. Filament of a 6AS7G
  139. triode=>pentode
  140. noob PSUD question...
  141. Detailed and Dry.
  142. Audion sterling phono stage - a good base for future upgrades?
  143. First Try on Tube Preamp
  144. EL34 in class AB2 triode mode push-pull?
  145. Heater Voltage Range, Hi or Low
  146. Donor H/K A224 Amp
  147. market for used tubes?
  148. Voltage Doubler Problem
  149. 6922 as a CCS, a question ?
  150. ALPS Pot
  151. Tube parameter ?
  152. tube life
  153. 7591A Tubes for sale?
  154. Restoring tired tubes
  155. My Bottlehead Tube Rig is done...for now
  156. Hammond Transformers
  157. Kenwood KW-70 Receiver
  158. Tube output buffer for DAC....needs advice!
  159. The Crackerbox Amp
  160. Antique Sound Lab MG-SPM25 Output Transformers
  161. el84 quad schematic..something is wrong...?
  162. really dumb question about SE 6bq5 operating point (triode)
  163. 6n7gt
  164. EE-Zee & Chee-Zee bias and offset adjustment idea
  165. Preamp Selection
  166. High frecuency oscillation when moving volume pot
  167. Choke load - how to plot loadline?
  168. Audio Research LS2
  169. Any Tube DIYers in Bay Area
  170. 6DJ8 preamp voltage?
  171. Diodes in Grid-Cathode Circuit
  172. To regulate or not?
  173. Odd tube behavior
  174. output txfr on cathode?
  175. tube preamp w/ XLR?
  176. ECC88 and PCC88 filament voltages
  177. Best tube choice for 1st SET project?
  178. Croft Vitale
  179. at last, amp finnished
  180. Valve-Heart Recording Studio
  181. Prototyping ( Breadboard ) Chassis Ideas and Suggestions
  182. old tubes
  183. where to place extra filter cap
  184. Troubleshooting a 6n1p linestage.
  185. 300BSE series
  186. Which triode is the best for preamp?
  187. AV8 and AV15 Vaic tubes
  188. Refridgerator trying to kill my Valve Amp
  189. When is capacitance making AC ripple a non-issue in B+ PS's?
  190. Quicksilver Bias Problem
  191. Looking for good book about phase split
  192. speaker protection fuse in Transcendent T8
  193. Shuguang Tube Factory(pics)
  194. "Pentodes for Dummies" needed.
  195. schematic for audio research classic 120 amps?
  196. Bouncing Ground
  197. Testing response....
  198. Impedance selection
  199. Heater To Cathode Potential
  200. uneven wound 50w OT 2 ideas...?
  201. 6B4G Amplifier Questions
  202. grounding heater/filament center
  203. Do I lose power when parafeeding?
  204. no ground problem
  205. Tube amp project
  206. bi-amping with gainclone + tubeamp
  207. Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA?
  208. proposed 833 design
  209. Thyratron Circuit
  210. different phase invertors
  211. Tetrode or Pentode? / Tube info
  212. RECTIFIERLESS, is that possible?
  213. About high voltage regulated power supplies
  214. Stupid question about capacitors
  215. Time advanced error feedback correction
  216. My first tube amp
  217. copland 504
  218. 6D22S Damper Tubes
  219. resuscitating 60+ year old radio
  220. 6C45 in a phono amp? looks like this might be hot.
  221. quality of power supply
  222. Gassy Tube
  223. transformer coupling, magnetic amplifiers, grid leak current
  224. How low 6922/ECC88 can go?
  225. Question about PP EL34 power supply behaviour
  226. Tube amps and electric safety
  227. Transformer for a tube amp question
  228. Need some info on E88CC/6922
  229. strange "thing"
  230. Micing tube amps
  231. Tube preamp huge DC thump!
  232. New speaker for transcendent T8
  233. choke winding
  234. MC phono preamp
  235. KYW's linestage (split from RIAA for life time)
  236. output transformer spice model
  237. cathode connection in directly heated triodes
  238. 50watt Plexi Again
  239. Anyone use ICs as input phase splitters for tube equipment
  240. Tube Sockets
  241. RIAA and Linestage for life time
  242. 211 Preamp
  243. PL504 circuits.
  244. Tube Recommendation
  245. 6.3v 30A!?
  246. Simplest 6080 or 6AS7 OTL Project?
  247. Is 6N1P = 6N7 = ECC31
  248. EL34 in Pentode Class A?
  249. Wiring a 12au7
  250. BLue hue

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