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  1. Ultra Cheap transformers?
  2. Push-pull output impedance
  3. Tube amp cost
  4. 830b
  5. Leak Tl/12+
  6. Toroid Trafo as choke
  7. in search of a 3c33 dual triode.....
  8. Question about MiniBlok II Schematic
  9. Wavebourn Alligator amplifier
  10. Best Tube Testers?
  11. Rusky version EF86
  12. Melos SHA Gold Issue
  13. Erratic tube activity
  14. Bogen Front End
  15. Maybe a Ruskie
  16. Another kind of hybrid
  17. Output impedance
  18. GU29 Amp. Schematic - Audioromy or similar
  19. Power On Indicator Light
  20. Newbie Aikido power supply question
  21. Se output transformer question
  22. Aikido hum
  23. Output transformer replacement... Worth it?
  24. Almarro A205A schematic
  25. Valves World question
  26. diodes before plate load
  27. power tubes..newbie question.
  28. Need Help 12BH7 Tube test.
  29. Tube Virgin
  30. Chassis layout help
  31. Maybe this is why 300b's dont last as long
  32. High-voltage bench power supply
  33. Ebay Tube amp buy disaster
  34. HK cheap SE OTPs...hmmm
  35. Modded ST70 Done
  36. bad buzz in an EL34 amp
  37. Another radio->Gtr amp mod question
  38. yaoin
  39. What is the safest method to plot characteristic curves without ruining the tubes
  40. Screen grid zeners; which?
  41. Another one I don't get
  42. 6BG6GA adapter instructions needed
  43. got an EC8020
  44. Identifying these Valvos.
  45. Converting tube guitar amp to Hi-Fi amp
  46. 21kW audio power amp?
  47. Quicksilver conversion
  48. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  49. Hammond Transformers in Montreal/Canada
  50. Can't find data for 8624
  51. Any advice on modifying a 2A3 SET amp to parafeed?
  52. Output impedance for non published PP configuration
  53. Grid stopper resistor required (KT66)?
  54. Ask Jan First OPTs
  55. For what are high mu triodes still useful?
  56. CCa "low noise"?
  57. Upgrading my Audio Research VT 130 SE Tube amp
  58. 100ma FSD voltmeter
  59. Conqueror schematic
  60. Ground reference
  61. Overdriven Capacitor?
  62. Tone Controls?
  63. My first "from scratch" design, SE KT88..........
  64. OPTs of questionable utility
  65. 6336 as a Rectifier
  66. tube power supply
  67. Anyone read Russian?
  68. PSU - dropping resistors?
  69. pre-amp design, just curious about your thoughts here.
  70. Using isolation transformer as a PSU transformer???
  71. KT66 loosing its getter
  72. Mullard schematic?
  73. Mikale Abdellah SE KT88 B+ voltage?
  74. Layout software
  75. Does anyone have any schematics for a parafeed SET amp?
  76. music angel kt88
  77. CB radio
  78. The end of the 300b Dream?
  79. Voltage divider to reduce 6v dc to 2vdc
  80. oil injected rca cables?
  81. Modification.....
  82. CHOKY'S EC8010 preamp
  83. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  84. tube checker
  85. 300B tube going dead after a few months
  86. KT88 se build NO GAIN please help
  87. mengyue mini valve amplifier
  88. Preamp suggest, please.
  89. Problem: Severe power transformer and choke vibration
  90. Amp Hack schematic questions
  91. This circuit ok?
  92. Tube ID anyone?
  93. Posted new books and data
  94. The sound of a failing tube rectifier?
  95. Proyect with PL36 and N2P (Russian ECC83)
  96. 300b LTspice model with grid current?
  97. Tri-amp using 2a3 SETs
  98. TentLabs Directly Heated Tubes Supply
  99. Bevois Valley Design Question
  100. Kofi Annan in: "Oscillation Blues"
  101. Common mode choke model
  102. UTC 20 Watt Amp - Any Experience?
  103. 6cz5s for EL84s
  104. The 120Hz Blues...
  105. Grounding points....
  106. Cap values for CLC filter
  107. Tube glows red hot, blows fuse
  108. Independent Bias Adjust for Each Tube?
  109. KT-88 from a book
  110. Modelling PSU?!
  111. DD amp for ESLs...
  112. Today's tube manufacters, best is?
  113. Advice on hum in phono stage
  114. Cathode follower & SRPP q
  115. FREDs on PSU
  116. Hybrid Shenanigans
  117. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  118. 5AR4 heaters
  119. Bad Grounding,or Cheap Pot??
  120. Tube Construction Handbook
  121. WE 350: dry bass?
  122. What size capacitor I use for a 2A3 or 300B cathode bypass?
  123. Need helps with building poweramp stage
  124. Noah's Ark for electron tubes
  125. Fixed Bias suggestions
  126. OD3/OA3 voltage regulation design
  127. DHT filament heating with SMPS + CCS
  128. Using SE transformers in a PP circuit
  129. Schematic: Audio Innovations, The first audio amplifier
  130. Now THIS is tube DIY to the extreme
  131. Dynaco mkIII A431 op's
  132. Alternative to Power Transformer
  133. Help with e180f and ixys current reg
  134. help! no power, im lost
  135. Jerrycan amp (RH34SE)
  136. 12B4 Updates
  137. www.diykits.com.hk stepped volume control ... any good?
  138. Hammond L-100 conversion
  139. Anyone have the ASL model MGSI15 schematic ?
  140. Replacement for single-winding OPT?
  141. Buzz in new amp...
  142. 48V B+ linestage
  143. Line-Stage Opinion Question
  144. Audio applications of sweep tubes and ratings
  145. Differences in structure between parafeed ad gapped OPTs
  146. Take a look and let me know what you think
  147. Printed circuit board designing?
  148. SimpleSE - Switches, Wire, IEC, Jacks
  149. KT90 why this ?
  150. Break in
  151. Choke Design - Basic Questions
  152. Is this a good interstage transformer?
  153. Best tubes for bass?
  154. Tube amps & MP3's
  155. TRIO 15Hz Oscilloscope CS-1560A
  156. Newbie Needs Help Choosing A Kit
  157. I need a negative supply rail--but how?
  158. Strange Hum
  159. VR Tubes
  160. Understanding plate loads
  161. How do you know if your preamp has inverted the phase?
  162. 6P1 Equivalent
  163. EL34 and KT88??? 6550?
  164. one stage DHT amp
  165. 6V6 Output?
  166. Lineup of four: Help me choose?! OPT for SE
  167. 6DJ8 / 6922 tube?
  168. bias pilot sa 260
  169. Using vintage OPTs as PSU chokes ?
  170. crystal palace driver stage by morgan jones
  171. Why Are 12A*7 Tubes So Bad?
  172. Mikael's KT-88 question
  173. OPT for PSE 6c33c tubes
  174. 24v aikido distortion
  175. ED8000 SE or Parafeed?
  176. GZ33 Rectifier drop?
  177. counterpoint sa11
  178. High voltage problem
  179. Wire gauges
  180. Simple headphones out
  181. Mull(ard)ing over valve choice...
  182. Turning on B+ without heaters with aikido
  183. New Project - Plitron 4006
  184. Where in Brisbane can I get a transformer for my Chinese amp
  185. Etching or silkscreening chassis?
  186. can please someone explain this to me?
  187. A VCCS tube amp, how?
  188. How to add a subwoofer out?
  189. Kind of cool check it out
  190. new opt for s5 k16ls?
  191. Wanted Arkay SP6, Knight 83YX768 schematics
  192. Tube Rectifier protection
  193. Quick Q on Max G2/Screen Volts..
  194. Cathodyne follower? :)
  195. Real music power
  196. Tube info needed
  197. Petrol Head Amp
  198. Help Needed- Replacement Volume Pot For a Fisher KX100
  199. What are these caps good for?
  200. 300B Set amp some variations
  201. why p-p amp RL for class B is 1/2 the class A load?
  202. Is this circuit ok?
  203. Attenuators ------ Please Help
  204. Transformer Coupled Pentode Question
  205. no response needed 903@klipschorns
  206. KT88: EH vs. Winged C
  207. Anyone have experience with the China made tube amps
  208. Toroidal transformer potting can
  209. 300B - Push Pull or PSE to drive a commercial speaker
  210. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  211. Choke Input Filter.
  212. Preamp comparisons
  213. Amperite delay relays
  214. Help with making a tube amp?
  215. Linestage suggestion for Kuei Yang Wang's phonostage
  216. Altec Lansing 440B preamplifier
  217. Modding a Bogen CHB100...
  218. Report: One-Electron PRC as input choke
  219. Phase Splitter Name
  220. 6ck4 sweetspot
  221. Mystery Ebay amp purchase
  222. Triode versus Pentode
  223. Supply, Full wave, choke on center tap?
  224. Ping SY
  225. Interstage Transformer Loading
  226. Tube Amplifier Kit?
  227. Easy inexpensive tube buffer ideas?
  228. Running tubes at their maximum dissipation.
  229. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  230. DHT drivers - shootout
  231. Dynaco MK IV
  232. KT88 , Genalex or Chinese ? Help !!!
  233. output tubes for stereo 70
  234. 6H6P for Sonic Frontiers Line 2?
  235. Too much distortion
  236. Servo assisted CF LCR-filter
  237. 6v 5AR4?
  238. 845 Grid stopper value
  239. Chokes, sizing and ringing?
  240. Long tail 6sl7 for Dynaco stereo 70?
  241. Triode Fabrication Video
  242. Funny Hi-Fi quote
  243. 300B PP ph.split
  244. extend tube sockets, or tube "plugs"?
  245. Klipsch Promedia GMX A-2.1 + Decware Taboo
  246. So any ideas for a car type amp?
  247. Cathode Biasing a 6L6 quartet power stage
  248. Calling All Mullard 5-20 Aficionados
  249. Modelling a DC filament supply in PSU Designer II
  250. 12AX7 Preamp NOOB Question

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