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  1. 6F6G Amplifier
  2. good book/article about using oscilloscopes?
  3. how to attach photos
  4. Is 450V the max of triode strapped 6l6gc
  5. Separate power supply - Umbilical Cord
  6. tube amp being weird -- any ideas
  7. need to discharge psu safely
  8. Jadis DA7/defy power amplifier mods
  9. 5.3v on 6SN7 filament?
  10. The Valve Wizard
  11. Mercury vapor rectifier tube question
  12. An Indiana Yankee in Putin's court.
  13. Switching over to a fixed bias
  14. Dynamic load line analysis using music and speaker load
  15. Capacitance in PSU
  16. preamp line ctt
  17. Genalex KT-88 reissue
  18. Combine EF80 with EL84
  19. 2A3 maximum plate voltage
  20. Amplifier Response Stability & All That.
  21. 100k linear pots, any idea?
  22. 6550, 6L6, or 6V6??
  23. grid-stopper resistor
  24. cathode bypass caps suggestions please for newbie
  25. Need Schematic-H&K B.A.T.T.
  26. 6EJ7 phono preamp?
  27. Impressions of the Ella, a pp EL34
  28. 30L15 / PCC805 - What can I use them for?
  29. Ultra Cheap transformers?
  30. Push-pull output impedance
  31. Tube amp cost
  32. 830b
  33. Leak Tl/12+
  34. Toroid Trafo as choke
  35. in search of a 3c33 dual triode.....
  36. Question about MiniBlok II Schematic
  37. Wavebourn Alligator amplifier
  38. Best Tube Testers?
  39. Rusky version EF86
  40. Melos SHA Gold Issue
  41. Erratic tube activity
  42. Bogen Front End
  43. Maybe a Ruskie
  44. Another kind of hybrid
  45. Output impedance
  46. GU29 Amp. Schematic - Audioromy or similar
  47. Power On Indicator Light
  48. Newbie Aikido power supply question
  49. Se output transformer question
  50. Aikido hum
  51. Output transformer replacement... Worth it?
  52. Almarro A205A schematic
  53. Valves World question
  54. diodes before plate load
  55. power tubes..newbie question.
  56. Need Help 12BH7 Tube test.
  57. Tube Virgin
  58. Chassis layout help
  59. Maybe this is why 300b's dont last as long
  60. High-voltage bench power supply
  61. Ebay Tube amp buy disaster
  62. HK cheap SE OTPs...hmmm
  63. Modded ST70 Done
  64. bad buzz in an EL34 amp
  65. Another radio->Gtr amp mod question
  66. yaoin
  67. What is the safest method to plot characteristic curves without ruining the tubes
  68. Screen grid zeners; which?
  69. Another one I don't get
  70. 6BG6GA adapter instructions needed
  71. got an EC8020
  72. Identifying these Valvos.
  73. Converting tube guitar amp to Hi-Fi amp
  74. 21kW audio power amp?
  75. Quicksilver conversion
  76. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  77. Hammond Transformers in Montreal/Canada
  78. Can't find data for 8624
  79. Any advice on modifying a 2A3 SET amp to parafeed?
  80. Output impedance for non published PP configuration
  81. Grid stopper resistor required (KT66)?
  82. Ask Jan First OPTs
  83. For what are high mu triodes still useful?
  84. CCa "low noise"?
  85. Upgrading my Audio Research VT 130 SE Tube amp
  86. 100ma FSD voltmeter
  87. Conqueror schematic
  88. Ground reference
  89. Overdriven Capacitor?
  90. Tone Controls?
  91. My first "from scratch" design, SE KT88..........
  92. OPTs of questionable utility
  93. 6336 as a Rectifier
  94. tube power supply
  95. Anyone read Russian?
  96. PSU - dropping resistors?
  97. pre-amp design, just curious about your thoughts here.
  98. Using isolation transformer as a PSU transformer???
  99. KT66 loosing its getter
  100. Mullard schematic?
  101. Mikale Abdellah SE KT88 B+ voltage?
  102. Layout software
  103. Does anyone have any schematics for a parafeed SET amp?
  104. music angel kt88
  105. CB radio
  106. The end of the 300b Dream?
  107. Voltage divider to reduce 6v dc to 2vdc
  108. oil injected rca cables?
  109. Modification.....
  110. CHOKY'S EC8010 preamp
  111. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  112. tube checker
  113. 300B tube going dead after a few months
  114. KT88 se build NO GAIN please help
  115. mengyue mini valve amplifier
  116. Preamp suggest, please.
  117. Problem: Severe power transformer and choke vibration
  118. Amp Hack schematic questions
  119. This circuit ok?
  120. Tube ID anyone?
  121. Posted new books and data
  122. The sound of a failing tube rectifier?
  123. Proyect with PL36 and N2P (Russian ECC83)
  124. 300b LTspice model with grid current?
  125. Tri-amp using 2a3 SETs
  126. TentLabs Directly Heated Tubes Supply
  127. Bevois Valley Design Question
  128. Kofi Annan in: "Oscillation Blues"
  129. Common mode choke model
  130. UTC 20 Watt Amp - Any Experience?
  131. 6cz5s for EL84s
  132. The 120Hz Blues...
  133. Grounding points....
  134. Cap values for CLC filter
  135. Tube glows red hot, blows fuse
  136. Independent Bias Adjust for Each Tube?
  137. KT-88 from a book
  138. Modelling PSU?!
  139. DD amp for ESLs...
  140. Today's tube manufacters, best is?
  141. Advice on hum in phono stage
  142. Cathode follower & SRPP q
  143. FREDs on PSU
  144. Hybrid Shenanigans
  145. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  146. 5AR4 heaters
  147. Bad Grounding,or Cheap Pot??
  148. Tube Construction Handbook
  149. WE 350: dry bass?
  150. What size capacitor I use for a 2A3 or 300B cathode bypass?
  151. Need helps with building poweramp stage
  152. Noah's Ark for electron tubes
  153. Fixed Bias suggestions
  154. OD3/OA3 voltage regulation design
  155. DHT filament heating with SMPS + CCS
  156. Using SE transformers in a PP circuit
  157. Schematic: Audio Innovations, The first audio amplifier
  158. Now THIS is tube DIY to the extreme
  159. Dynaco mkIII A431 op's
  160. Alternative to Power Transformer
  161. Help with e180f and ixys current reg
  162. help! no power, im lost
  163. Jerrycan amp (RH34SE)
  164. 12B4 Updates
  165. www.diykits.com.hk stepped volume control ... any good?
  166. Hammond L-100 conversion
  167. Anyone have the ASL model MGSI15 schematic ?
  168. Replacement for single-winding OPT?
  169. Buzz in new amp...
  170. 48V B+ linestage
  171. Line-Stage Opinion Question
  172. Audio applications of sweep tubes and ratings
  173. Differences in structure between parafeed ad gapped OPTs
  174. Take a look and let me know what you think
  175. Printed circuit board designing?
  176. SimpleSE - Switches, Wire, IEC, Jacks
  177. KT90 why this ?
  178. Break in
  179. Choke Design - Basic Questions
  180. Is this a good interstage transformer?
  181. Best tubes for bass?
  182. Tube amps & MP3's
  183. TRIO 15Hz Oscilloscope CS-1560A
  184. Newbie Needs Help Choosing A Kit
  185. I need a negative supply rail--but how?
  186. Strange Hum
  187. VR Tubes
  188. Understanding plate loads
  189. How do you know if your preamp has inverted the phase?
  190. 6P1 Equivalent
  191. EL34 and KT88??? 6550?
  192. one stage DHT amp
  193. 6V6 Output?
  194. Lineup of four: Help me choose?! OPT for SE
  195. 6DJ8 / 6922 tube?
  196. bias pilot sa 260
  197. Using vintage OPTs as PSU chokes ?
  198. crystal palace driver stage by morgan jones
  199. Why Are 12A*7 Tubes So Bad?
  200. Mikael's KT-88 question
  201. OPT for PSE 6c33c tubes
  202. 24v aikido distortion
  203. ED8000 SE or Parafeed?
  204. GZ33 Rectifier drop?
  205. counterpoint sa11
  206. High voltage problem
  207. Wire gauges
  208. Simple headphones out
  209. Mull(ard)ing over valve choice...
  210. Turning on B+ without heaters with aikido
  211. New Project - Plitron 4006
  212. Where in Brisbane can I get a transformer for my Chinese amp
  213. Etching or silkscreening chassis?
  214. can please someone explain this to me?
  215. A VCCS tube amp, how?
  216. How to add a subwoofer out?
  217. Kind of cool check it out
  218. new opt for s5 k16ls?
  219. Wanted Arkay SP6, Knight 83YX768 schematics
  220. Tube Rectifier protection
  221. Quick Q on Max G2/Screen Volts..
  222. Cathodyne follower? :)
  223. Real music power
  224. Tube info needed
  225. Petrol Head Amp
  226. Help Needed- Replacement Volume Pot For a Fisher KX100
  227. What are these caps good for?
  228. 300B Set amp some variations
  229. why p-p amp RL for class B is 1/2 the class A load?
  230. Is this circuit ok?
  231. Attenuators ------ Please Help
  232. Transformer Coupled Pentode Question
  233. no response needed 903@klipschorns
  234. KT88: EH vs. Winged C
  235. Anyone have experience with the China made tube amps
  236. Toroidal transformer potting can
  237. 300B - Push Pull or PSE to drive a commercial speaker
  238. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  239. Choke Input Filter.
  240. Preamp comparisons
  241. Amperite delay relays
  242. Help with making a tube amp?
  243. Linestage suggestion for Kuei Yang Wang's phonostage
  244. Altec Lansing 440B preamplifier
  245. Modding a Bogen CHB100...
  246. Report: One-Electron PRC as input choke
  247. Phase Splitter Name
  248. 6ck4 sweetspot
  249. Mystery Ebay amp purchase
  250. Triode versus Pentode

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