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  1. Need Schematic-H&K B.A.T.T.
  2. 6EJ7 phono preamp?
  3. Impressions of the Ella, a pp EL34
  4. 30L15 / PCC805 - What can I use them for?
  5. Ultra Cheap transformers?
  6. Push-pull output impedance
  7. Tube amp cost
  8. 830b
  9. Leak Tl/12+
  10. Toroid Trafo as choke
  11. in search of a 3c33 dual triode.....
  12. Question about MiniBlok II Schematic
  13. Wavebourn Alligator amplifier
  14. Best Tube Testers?
  15. Rusky version EF86
  16. Melos SHA Gold Issue
  17. Tubelab Simple SE & Edcor
  18. Erratic tube activity
  19. Bogen Front End
  20. Maybe a Ruskie
  21. Another kind of hybrid
  22. Output impedance
  23. GU29 Amp. Schematic - Audioromy or similar
  24. Power On Indicator Light
  25. Newbie Aikido power supply question
  26. Se output transformer question
  27. Aikido hum
  28. Output transformer replacement... Worth it?
  29. Almarro A205A schematic
  30. Valves World question
  31. diodes before plate load
  32. power tubes..newbie question.
  33. Need Help 12BH7 Tube test.
  34. Tube Virgin
  35. Chassis layout help
  36. Maybe this is why 300b's dont last as long
  37. High-voltage bench power supply
  38. Ebay Tube amp buy disaster
  39. HK cheap SE OTPs...hmmm
  40. Modded ST70 Done
  41. bad buzz in an EL34 amp
  42. Another radio->Gtr amp mod question
  43. yaoin
  44. What is the safest method to plot characteristic curves without ruining the tubes
  45. Screen grid zeners; which?
  46. Another one I don't get
  47. 6BG6GA adapter instructions needed
  48. got an EC8020
  49. Identifying these Valvos.
  50. Converting tube guitar amp to Hi-Fi amp
  51. 21kW audio power amp?
  52. Quicksilver conversion
  53. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  54. Hammond Transformers in Montreal/Canada
  55. Can't find data for 8624
  56. Any advice on modifying a 2A3 SET amp to parafeed?
  57. Output impedance for non published PP configuration
  58. Grid stopper resistor required (KT66)?
  59. Ask Jan First OPTs
  60. For what are high mu triodes still useful?
  61. CCa "low noise"?
  62. Upgrading my Audio Research VT 130 SE Tube amp
  63. 100ma FSD voltmeter
  64. Conqueror schematic
  65. Bassman 135 OT
  66. Ground reference
  67. Overdriven Capacitor?
  68. Tone Controls?
  69. My first "from scratch" design, SE KT88..........
  70. OPTs of questionable utility
  71. 6336 as a Rectifier
  72. tube power supply
  73. Anyone read Russian?
  74. PSU - dropping resistors?
  75. pre-amp design, just curious about your thoughts here.
  76. Using isolation transformer as a PSU transformer???
  77. KT66 loosing its getter
  78. Mullard schematic?
  79. Mikale Abdellah SE KT88 B+ voltage?
  80. Layout software
  81. Does anyone have any schematics for a parafeed SET amp?
  82. music angel kt88
  83. CB radio
  84. The end of the 300b Dream?
  85. Voltage divider to reduce 6v dc to 2vdc
  86. oil injected rca cables?
  87. Modification.....
  88. CHOKY'S EC8010 preamp
  89. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  90. tube checker
  91. 300B tube going dead after a few months
  92. KT88 se build NO GAIN please help
  93. mengyue mini valve amplifier
  94. Preamp suggest, please.
  95. Problem: Severe power transformer and choke vibration
  96. Amp Hack schematic questions
  97. This circuit ok?
  98. Tube ID anyone?
  99. Posted new books and data
  100. The sound of a failing tube rectifier?
  101. Proyect with PL36 and N2P (Russian ECC83)
  102. 300b LTspice model with grid current?
  103. Tri-amp using 2a3 SETs
  104. TentLabs Directly Heated Tubes Supply
  105. Bevois Valley Design Question
  106. Kofi Annan in: "Oscillation Blues"
  107. Common mode choke model
  108. UTC 20 Watt Amp - Any Experience?
  109. 6cz5s for EL84s
  110. The 120Hz Blues...
  111. Amplitrex AT-1000 Tube Tester
  112. audio amp. versus guitar amp
  113. Grounding points....
  114. Cap values for CLC filter
  115. Tube glows red hot, blows fuse
  116. Independent Bias Adjust for Each Tube?
  117. Mesa Boogie Maverick schematic any1?
  118. KT-88 from a book
  119. Modelling PSU?!
  120. DD amp for ESLs...
  121. Today's tube manufacters, best is?
  122. Advice on hum in phono stage
  123. Cathode follower & SRPP q
  124. FREDs on PSU
  125. Hybrid Shenanigans
  126. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  127. 5AR4 heaters
  128. Bad Grounding,or Cheap Pot??
  129. Tube Construction Handbook
  130. WE 350: dry bass?
  131. What size capacitor I use for a 2A3 or 300B cathode bypass?
  132. Need helps with building poweramp stage
  133. Noah's Ark for electron tubes
  134. Fixed Bias suggestions
  135. OD3/OA3 voltage regulation design
  136. DHT filament heating with SMPS + CCS
  137. Using SE transformers in a PP circuit
  138. EDCOR Releases Line of Guitar OPT's
  139. Schematic: Audio Innovations, The first audio amplifier
  140. Restoring 1948 Gibson GA-30 guitar amp(tube)
  141. Now THIS is tube DIY to the extreme
  142. Dynaco mkIII A431 op's
  143. Alternative to Power Transformer
  144. Help with e180f and ixys current reg
  145. Building a "Hiwatt" tube Bass Amp
  146. help! no power, im lost
  147. Jerrycan amp (RH34SE)
  148. 12B4 Updates
  149. www.diykits.com.hk stepped volume control ... any good?
  150. Hammond L-100 conversion
  151. Anyone have the ASL model MGSI15 schematic ?
  152. Replacement for single-winding OPT?
  153. Buzz in new amp...
  154. 48V B+ linestage
  155. Line-Stage Opinion Question
  156. Audio applications of sweep tubes and ratings
  157. Differences in structure between parafeed ad gapped OPTs
  158. Take a look and let me know what you think
  159. Printed circuit board designing?
  160. SimpleSE - Switches, Wire, IEC, Jacks
  161. KT90 why this ?
  162. Break in
  163. Choke Design - Basic Questions
  164. Is this a good interstage transformer?
  165. Best tubes for bass?
  166. Tube amps & MP3's
  167. TRIO 15Hz Oscilloscope CS-1560A
  168. Newbie Needs Help Choosing A Kit
  169. I need a negative supply rail--but how?
  170. Strange Hum
  171. VR Tubes
  172. Understanding plate loads
  173. How do you know if your preamp has inverted the phase?
  174. Bogen J130 PA to guitar amp?
  175. 6P1 Equivalent
  176. EL34 and KT88??? 6550?
  177. one stage DHT amp
  178. 6V6 Output?
  179. Lineup of four: Help me choose?! OPT for SE
  180. 6DJ8 / 6922 tube?
  181. bias pilot sa 260
  182. Using vintage OPTs as PSU chokes ?
  183. crystal palace driver stage by morgan jones
  184. Why Are 12A*7 Tubes So Bad?
  185. Mikael's KT-88 question
  186. OPT for PSE 6c33c tubes
  187. 24v aikido distortion
  188. ED8000 SE or Parafeed?
  189. GZ33 Rectifier drop?
  190. counterpoint sa11
  191. High voltage problem
  192. Wire gauges
  193. Simple headphones out
  194. Mull(ard)ing over valve choice...
  195. Turning on B+ without heaters with aikido
  196. New Project - Plitron 4006
  197. Where in Brisbane can I get a transformer for my Chinese amp
  198. Etching or silkscreening chassis?
  199. can please someone explain this to me?
  200. A VCCS tube amp, how?
  201. How to add a subwoofer out?
  202. Kind of cool check it out
  203. new opt for s5 k16ls?
  204. Wanted Arkay SP6, Knight 83YX768 schematics
  205. toggle switch for input selector
  206. Tube Rectifier protection
  207. Quick Q on Max G2/Screen Volts..
  208. Cathodyne follower? :)
  209. Real music power
  210. Tube info needed
  211. Petrol Head Amp
  212. Help Needed- Replacement Volume Pot For a Fisher KX100
  213. What are these caps good for?
  214. 300B Set amp some variations
  215. my second design circuit(hifhgain guitar amp)
  216. why p-p amp RL for class B is 1/2 the class A load?
  217. Is this circuit ok?
  218. JTM60 capacitor question
  219. Attenuators ------ Please Help
  220. Transformer Coupled Pentode Question
  221. no response needed 903@klipschorns
  222. KT88: EH vs. Winged C
  223. Voltage swing on a guitar pick-up?
  224. Anyone have experience with the China made tube amps
  225. tubelab SE 300b power transformer
  226. Toroidal transformer potting can
  227. 300B - Push Pull or PSE to drive a commercial speaker
  228. Consonance Ella Diy hifi supply, el34, 6550 or KT88?
  229. Choke Input Filter.
  230. Preamp comparisons
  231. Amperite delay relays
  232. Help with making a tube amp?
  233. Linestage suggestion for Kuei Yang Wang's phonostage
  234. Altec Lansing 440B preamplifier
  235. Modding a Bogen CHB100...
  236. Report: One-Electron PRC as input choke
  237. Phase Splitter Name
  238. 6ck4 sweetspot
  239. Mystery Ebay amp purchase
  240. Triode versus Pentode
  241. Supply, Full wave, choke on center tap?
  242. Ping SY
  243. Interstage Transformer Loading
  244. Tube Amplifier Kit?
  245. Easy inexpensive tube buffer ideas?
  246. Running tubes at their maximum dissipation.
  247. 6BM8/ Heathkkit S.88 Has only 3 and 15 ohm O/P..?
  248. DHT drivers - shootout
  249. Dynaco MK IV
  250. Fender Bassman- AB165 capacitor toss up

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