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  1. 12B4 help needed
  2. Power Trans question
  3. Noob amp wiring question...
  4. 5842 - russian ripoff
  5. Ruskie tube questions
  6. Opt placement
  7. 807 AB2 oscillation maybe?
  8. Amazon Does DIY Parts
  9. Shielded wire
  10. Guitar amp(s) for nephews
  11. Questions about Tube Amplifiers, Mikael's vs SimpleSE
  12. duncan psu simulation vox ac30cc
  13. Where low noise resistors matter
  14. funky power supply
  15. Choke loaded PSU versus VR tube regulated PSU?
  16. What would most of you do?
  17. IRFBC20 as source follower drivers for EL34s in AB1 PP
  18. first post, PS for 6em7 SET amp
  19. affordable transformers for KT-88's
  20. Need help with schematic
  21. How many people here use simulators, like LTspice, to help design tube stuff?
  22. newbie question regarding gain reduction
  23. Anybody did try this tube preamp ?
  24. Heathkit UA-2 output tx wiring question
  25. Question about the properties of "matched" tubes
  26. Using a passive direct box to kill ground loop noise?
  27. magnetized power transformer!
  28. Utc A-24
  29. lower cost options for spectrum analyser/ function generator?
  30. Need schematics for Val VP-110S Tube Amp
  31. So What now
  32. What other tubes can I use this OPT for?
  33. Super Junkbox 6S19P SET
  34. Grid stopper resistors
  35. 1959 Pilot AA-908 Amp into Guitar Amp
  36. Please evaluate my new EL34 Amp (waveform attached)
  37. Max voltages for EL84?
  38. Tubelab SE finished but need help.
  39. Oscilloscope Probes for Tube Work
  40. ECC88 vs 6SN7
  41. Good (tube) audio shows in the US?
  42. Please help me de-hum my new pre
  43. Help for newbie
  44. Simple ReAmp Mod? Help with Input Impedances, Please!
  45. Which of these two phono stages
  46. Crosley radio
  47. Small tube amp for headphones/computer speakers?(first post)
  48. Peculiar Fisher circuit
  49. Hum in Grounded Grid Pre
  50. Counterpoint SA-1000
  51. K-502 How to select a potentiometer
  52. What are these Christmas light things?
  53. a CHEAP integrated tube amp kit-anybody?
  54. My amp is acting like a transducer!?
  55. Transformer current question
  56. Brimar date codes?
  57. Home made SE 300B amp
  58. Parallel Push Pull 6AS7 or 6080
  59. random crackle ? (McMartin MA-20)
  60. KT88 filament failure - twice on same socket
  61. Solid State Regulator for tube amp
  62. Proposed screen-drive amp design... comments, please?
  63. SimpleSE PCB out of stock
  64. Any good explanation of Passive EQ Filters??
  65. terraplane 300B
  66. Sun Audio transformers
  67. Vacuum State RTP5.
  68. Schematics for Audio Innovations s1000 pre
  69. Tube amp for newbye
  70. 3C24SE amp...
  71. Meixing MingDa MC767-RD
  72. confusing transformer connections
  73. Have to mod K-502 to 4Ohms from 8
  74. SOund of 3B28 vs. 866A
  75. S3E Vacuum Tube
  76. Tube audio & "3 dimensionality"
  77. Darling monoblocks
  78. Testing 350B with B & K 747A
  79. Interstage transformer for balanced amp question
  80. Filament transformer questions
  81. dBm or dBV Audio Voltmeter
  82. VTL MB250 Signature monoblock Manual..
  83. Choke phase spliter
  84. Output transformer DC resistance..
  85. Chassis layout?
  86. Jolida schematic questions
  87. Tube Phono preamp kit?
  88. Does size really matter - SE Output
  89. 437A testing
  90. Tube Amp reverb noise, no vibrato intensity, unknown model. Help please
  91. What to do with a 5k output transfomer?
  92. adapter?
  93. Studer 52
  94. Safety ground question
  95. Old PS questions (EL34 replacement), and any Aus people know BWD?
  96. Darling 1626 amp
  97. Blackheart 5 watt
  98. What is this tube amp
  99. Extry, Extry, Blind Squirrel Finds Nut -sequence
  100. Why is distortion harmonic?
  101. Source for OPT
  102. EL34 to RL12P35 converting
  103. calculating total current draw
  104. Allied Radio (Knight) KA-55 schematic
  105. 6F6G Amplifier
  106. good book/article about using oscilloscopes?
  107. how to attach photos
  108. Is 450V the max of triode strapped 6l6gc
  109. Separate power supply - Umbilical Cord
  110. tube amp being weird -- any ideas
  111. need to discharge psu safely
  112. Jadis DA7/defy power amplifier mods
  113. 5.3v on 6SN7 filament?
  114. The Valve Wizard
  115. Mercury vapor rectifier tube question
  116. An Indiana Yankee in Putin's court.
  117. Switching over to a fixed bias
  118. Dynamic load line analysis using music and speaker load
  119. Capacitance in PSU
  120. preamp line ctt
  121. Genalex KT-88 reissue
  122. Combine EF80 with EL84
  123. 2A3 maximum plate voltage
  124. Amplifier Response Stability & All That.
  125. 100k linear pots, any idea?
  126. 6550, 6L6, or 6V6??
  127. grid-stopper resistor
  128. cathode bypass caps suggestions please for newbie
  129. Need Schematic-H&K B.A.T.T.
  130. 6EJ7 phono preamp?
  131. Impressions of the Ella, a pp EL34
  132. 30L15 / PCC805 - What can I use them for?
  133. Ultra Cheap transformers?
  134. Push-pull output impedance
  135. Tube amp cost
  136. 830b
  137. Leak Tl/12+
  138. Toroid Trafo as choke
  139. in search of a 3c33 dual triode.....
  140. Question about MiniBlok II Schematic
  141. Wavebourn Alligator amplifier
  142. Best Tube Testers?
  143. Rusky version EF86
  144. Melos SHA Gold Issue
  145. Tubelab Simple SE & Edcor
  146. Erratic tube activity
  147. Bogen Front End
  148. Maybe a Ruskie
  149. Another kind of hybrid
  150. Output impedance
  151. GU29 Amp. Schematic - Audioromy or similar
  152. Power On Indicator Light
  153. Newbie Aikido power supply question
  154. Se output transformer question
  155. Aikido hum
  156. Output transformer replacement... Worth it?
  157. Almarro A205A schematic
  158. Valves World question
  159. diodes before plate load
  160. power tubes..newbie question.
  161. Need Help 12BH7 Tube test.
  162. Tube Virgin
  163. Chassis layout help
  164. Maybe this is why 300b's dont last as long
  165. High-voltage bench power supply
  166. Ebay Tube amp buy disaster
  167. HK cheap SE OTPs...hmmm
  168. Modded ST70 Done
  169. bad buzz in an EL34 amp
  170. Another radio->Gtr amp mod question
  171. yaoin
  172. What is the safest method to plot characteristic curves without ruining the tubes
  173. Screen grid zeners; which?
  174. Another one I don't get
  175. 6BG6GA adapter instructions needed
  176. got an EC8020
  177. Identifying these Valvos.
  178. Converting tube guitar amp to Hi-Fi amp
  179. 21kW audio power amp?
  180. Quicksilver conversion
  181. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  182. Hammond Transformers in Montreal/Canada
  183. Can't find data for 8624
  184. Any advice on modifying a 2A3 SET amp to parafeed?
  185. Output impedance for non published PP configuration
  186. Grid stopper resistor required (KT66)?
  187. Ask Jan First OPTs
  188. For what are high mu triodes still useful?
  189. CCa "low noise"?
  190. Upgrading my Audio Research VT 130 SE Tube amp
  191. 100ma FSD voltmeter
  192. Conqueror schematic
  193. Bassman 135 OT
  194. Ground reference
  195. Overdriven Capacitor?
  196. Tone Controls?
  197. My first "from scratch" design, SE KT88..........
  198. OPTs of questionable utility
  199. 6336 as a Rectifier
  200. tube power supply
  201. Anyone read Russian?
  202. PSU - dropping resistors?
  203. pre-amp design, just curious about your thoughts here.
  204. Using isolation transformer as a PSU transformer???
  205. KT66 loosing its getter
  206. Mullard schematic?
  207. Mikale Abdellah SE KT88 B+ voltage?
  208. Layout software
  209. Does anyone have any schematics for a parafeed SET amp?
  210. music angel kt88
  211. CB radio
  212. The end of the 300b Dream?
  213. Voltage divider to reduce 6v dc to 2vdc
  214. oil injected rca cables?
  215. Modification.....
  216. CHOKY'S EC8010 preamp
  217. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  218. tube checker
  219. 300B tube going dead after a few months
  220. KT88 se build NO GAIN please help
  221. mengyue mini valve amplifier
  222. Preamp suggest, please.
  223. Problem: Severe power transformer and choke vibration
  224. Amp Hack schematic questions
  225. This circuit ok?
  226. Tube ID anyone?
  227. Posted new books and data
  228. The sound of a failing tube rectifier?
  229. Proyect with PL36 and N2P (Russian ECC83)
  230. 300b LTspice model with grid current?
  231. Tri-amp using 2a3 SETs
  232. TentLabs Directly Heated Tubes Supply
  233. Bevois Valley Design Question
  234. Kofi Annan in: "Oscillation Blues"
  235. Common mode choke model
  236. UTC 20 Watt Amp - Any Experience?
  237. 6cz5s for EL84s
  238. The 120Hz Blues...
  239. Amplitrex AT-1000 Tube Tester
  240. audio amp. versus guitar amp
  241. Grounding points....
  242. Cap values for CLC filter
  243. Tube glows red hot, blows fuse
  244. Independent Bias Adjust for Each Tube?
  245. Mesa Boogie Maverick schematic any1?
  246. KT-88 from a book
  247. Modelling PSU?!
  248. DD amp for ESLs...
  249. Today's tube manufacters, best is?
  250. Advice on hum in phono stage

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