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  1. Grounded Grid pre amp-- help please
  2. Tube output indicator - EM84 or 6AF6G
  3. suggest circuit with gain of 60
  4. ready to mod the hell out of my asl wave 8's
  5. My First DIY - need big help!
  6. rectifier tube question
  7. Newbie with Tannoy grfs, helpme to choice a good amp to them.
  8. Mullard CV 4109 tube
  9. Pre PS Improvements?
  10. 6n7gt+300b
  11. Calculating DC coupled Single Ended Valve Amplifiers - Part #1
  12. 12ax7 preamp,need help.
  13. tube datasheets and amp sch
  14. How to check output transformers ?
  15. Filament of a 6AS7G
  16. triode=>pentode
  17. noob PSUD question...
  18. Detailed and Dry.
  19. Audion sterling phono stage - a good base for future upgrades?
  20. First Try on Tube Preamp
  21. EL34 in class AB2 triode mode push-pull?
  22. Heater Voltage Range, Hi or Low
  23. Donor H/K A224 Amp
  24. market for used tubes?
  25. Voltage Doubler Problem
  26. 6922 as a CCS, a question ?
  27. ALPS Pot
  28. Tube parameter ?
  29. tube life
  30. 7591A Tubes for sale?
  31. Restoring tired tubes
  32. My Bottlehead Tube Rig is done...for now
  33. Hammond Transformers
  34. Kenwood KW-70 Receiver
  35. Tube output buffer for DAC....needs advice!
  36. The Crackerbox Amp
  37. Antique Sound Lab MG-SPM25 Output Transformers
  38. el84 quad schematic..something is wrong...?
  39. really dumb question about SE 6bq5 operating point (triode)
  40. 6n7gt
  41. EE-Zee & Chee-Zee bias and offset adjustment idea
  42. Preamp Selection
  43. High frecuency oscillation when moving volume pot
  44. Choke load - how to plot loadline?
  45. Audio Research LS2
  46. Any Tube DIYers in Bay Area
  47. 6DJ8 preamp voltage?
  48. Diodes in Grid-Cathode Circuit
  49. To regulate or not?
  50. Odd tube behavior
  51. output txfr on cathode?
  52. tube preamp w/ XLR?
  53. ECC88 and PCC88 filament voltages
  54. Best tube choice for 1st SET project?
  55. Croft Vitale
  56. at last, amp finnished
  57. Valve-Heart Recording Studio
  58. Prototyping ( Breadboard ) Chassis Ideas and Suggestions
  59. old tubes
  60. where to place extra filter cap
  61. Troubleshooting a 6n1p linestage.
  62. 300BSE series
  63. Which triode is the best for preamp?
  64. AV8 and AV15 Vaic tubes
  65. Refridgerator trying to kill my Valve Amp
  66. When is capacitance making AC ripple a non-issue in B+ PS's?
  67. Quicksilver Bias Problem
  68. Looking for good book about phase split
  69. speaker protection fuse in Transcendent T8
  70. Shuguang Tube Factory(pics)
  71. "Pentodes for Dummies" needed.
  72. schematic for audio research classic 120 amps?
  73. Bouncing Ground
  74. Testing response....
  75. Impedance selection
  76. Heater To Cathode Potential
  77. uneven wound 50w OT 2 ideas...?
  78. 6B4G Amplifier Questions
  79. grounding heater/filament center
  80. Do I lose power when parafeeding?
  81. no ground problem
  82. Tube amp project
  83. bi-amping with gainclone + tubeamp
  84. Plitron/Vanderveen/KT88 Tube rectifier recommendation for 230mA?
  85. proposed 833 design
  86. Thyratron Circuit
  87. different phase invertors
  88. Tetrode or Pentode? / Tube info
  89. RECTIFIERLESS, is that possible?
  90. About high voltage regulated power supplies
  91. Stupid question about capacitors
  92. Time advanced error feedback correction
  93. My first tube amp
  94. copland 504
  95. 6D22S Damper Tubes
  96. resuscitating 60+ year old radio
  97. 6C45 in a phono amp? looks like this might be hot.
  98. quality of power supply
  99. Gassy Tube
  100. transformer coupling, magnetic amplifiers, grid leak current
  101. How low 6922/ECC88 can go?
  102. Question about PP EL34 power supply behaviour
  103. Tube amps and electric safety
  104. Transformer for a tube amp question
  105. Need some info on E88CC/6922
  106. strange "thing"
  107. Micing tube amps
  108. Tube preamp huge DC thump!
  109. New speaker for transcendent T8
  110. choke winding
  111. MC phono preamp
  112. KYW's linestage (split from RIAA for life time)
  113. output transformer spice model
  114. cathode connection in directly heated triodes
  115. 50watt Plexi Again
  116. Anyone use ICs as input phase splitters for tube equipment
  117. Tube Sockets
  118. RIAA and Linestage for life time
  119. 211 Preamp
  120. PL504 circuits.
  121. Tube Recommendation
  122. 6.3v 30A!?
  123. Simplest 6080 or 6AS7 OTL Project?
  124. Is 6N1P = 6N7 = ECC31
  125. EL34 in Pentode Class A?
  126. Wiring a 12au7
  127. BLue hue
  128. Choosing a suitable 50W cathode resistor
  129. 5687
  130. heathkit Schematic
  131. Precision S100 schematics?
  132. my RIAA stage. Any comment
  133. buffer circuits
  134. switchable 2.5k/5k primary ot
  135. Old grundig 3095 radio
  136. DIY Single Ended Triode Designs
  137. dog whistle
  138. Volume pot question
  139. Oil PP Cap
  140. commercial tube preamps
  141. Transformer Cover
  142. Harman-Kardon A-300 Amplifier
  143. Phono preamp- how to modify to get deeper LF?
  144. Thyratron heater supply?
  145. amp conversions
  146. Looking for Scott 200 photofacts or service manual
  147. 6ag7 metal pentodes
  148. EL84 Push-Pull Vieta A-225 opinion
  149. 5998 power amp question
  150. Which rectifier tube?
  151. tube preamp
  152. 6GT5 distortion problem
  153. tube preamps and gain
  154. Cathode Follower? Yay or nay?
  155. what the crap is this!?
  156. Safety Practices, General and Ultra-High Voltage
  157. Output transformer issues...
  158. Tube sockets with the same pin spacing as the tube
  159. Help needed with preamp.
  160. VSE RTP5 linestage comments
  161. VSE RTP5 linestage comments
  162. Futterman OTL ferrite bead specification
  163. common anode capacitor for both sections
  164. How good are cheap tranny-interstages
  165. Favorite bias measuring and metering methods?
  166. Suitable regulated/filtered 4volt battery-valve power supply suitable for 6+ valves?
  167. Newbie Transformer Secondary Combination Qs--Plitron Example
  168. Zenith Wavemagnet Help Please !!!
  169. Audio research vs55/VT50/VT100
  170. quad 6bm8 per channel
  171. Tubes from St.Petersburg, Russia?
  172. Tube preamplifier
  173. Seeking suggestions on slowing B+ turn on
  174. Help on Brute force
  175. 6SL7 or 12AX7 in Kimmel OTL
  176. What´s wrong with Hammond 1628SE?
  177. Input stages - to decouple B+ or not?
  178. valve info? NEC 30M-P25
  179. Recommended sources for SED EL 34s
  180. Golden Middle output transformers
  181. Help needed on tube rectification.
  182. NWWA DIY Audio Meet 2004
  183. Audio Research V70
  184. PSU choke value
  185. 4 Ohm on 25v Tap?
  186. The MDF amp chassis discusion reminds me...
  187. SE used as step down OT
  188. Siemens E83f
  189. Enclosures in MDF.
  190. Sovtek KT88 specifications not found :(
  191. Fisher 800C FM Stereo problem
  192. Soliciting Enthusiastic Recommendations for 50+WPC Kit or Design
  193. EL519/KT90 The old debate
  194. Plasma/ionic
  195. How much voltage won't kill me?
  196. Pcl84 / 15dq8
  197. Alliance Audio
  198. Opinions of Menno Vanderveen ( van der Veen ) PP Amps, Esp. Super-Triode
  199. Supertotem
  200. neon bulbs as grid voltage clamps
  201. Large caps in PSU without choke?
  202. Tube rectifier ?s
  203. resistors, capacitors, etc. NEED MORE INFO!
  204. Recitifaction is a pain in the butt? A few lame questions
  205. Hook-up Wire?
  206. Using Telefunken "Tank" transfomers for a single ended el84 amp?
  207. cathode follower with gain
  208. Got sparks in my GZ34!
  209. Duncans PSU designer and tube rectifier.
  210. I want to make a simple UL PP amp
  211. Phase splitter questions
  212. I want dizzy, why can't my speech show?
  213. I come from China, giving the same friends in a fondness for
  214. I come from China, giving the same friends in a fondness for
  215. Choke value?
  216. line voltage level
  217. SRPP & DACs
  218. Tube ageing ?
  219. Changing caps for preamp
  220. 845 PP and Lundahl 1620
  221. schematic for a push pull EL 509
  222. 6N1P preamp too much gain...
  223. Looking for a great DIY-Preamp for MICs (48v)
  224. Miniature 8pin socket
  225. Please help my MC240
  226. Hammond 125ese cheap in Europe?
  227. Critique for circuit of great value 805 SET?
  228. SE OPT's & Biasing
  229. Compact All-In-One Chassis Design with good ventilation. And low noise, Not a Schemat
  230. Newbie First Amp
  231. Audio Note P-2
  232. 300b?
  233. Power Supply and VR tube help!
  234. Tubes for direct-driving ESL
  235. Question about popping Noise
  236. tube preamp...opinions
  237. Help! I need TRW(UTC) O35 DATA
  238. Is this a good tube DIY kit to get?
  239. Best AC Heater Practices
  240. new hybrid amp turn on circuit
  241. dc phono
  242. screen-plate resistor and grid leak resistor
  243. Kr842vhd
  244. DRD 300b amplifier sound quality?
  245. Pre-amp selection
  246. tube buffer for TDA1543 based dac
  247. Does anybody know if a WE404 (5847) would be able...
  248. Transformer Question
  249. New preamp
  250. Fisher 800c neg bias problem

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