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  1. duncan psu simulation vox ac30cc
  2. Where low noise resistors matter
  3. funky power supply
  4. Choke loaded PSU versus VR tube regulated PSU?
  5. What would most of you do?
  6. IRFBC20 as source follower drivers for EL34s in AB1 PP
  7. first post, PS for 6em7 SET amp
  8. affordable transformers for KT-88's
  9. Need help with schematic
  10. How many people here use simulators, like LTspice, to help design tube stuff?
  11. newbie question regarding gain reduction
  12. Anybody did try this tube preamp ?
  13. Heathkit UA-2 output tx wiring question
  14. Question about the properties of "matched" tubes
  15. Using a passive direct box to kill ground loop noise?
  16. magnetized power transformer!
  17. Utc A-24
  18. lower cost options for spectrum analyser/ function generator?
  19. Need schematics for Val VP-110S Tube Amp
  20. So What now
  21. What other tubes can I use this OPT for?
  22. Super Junkbox 6S19P SET
  23. Grid stopper resistors
  24. 1959 Pilot AA-908 Amp into Guitar Amp
  25. Please evaluate my new EL34 Amp (waveform attached)
  26. Max voltages for EL84?
  27. Tubelab SE finished but need help.
  28. Oscilloscope Probes for Tube Work
  29. ECC88 vs 6SN7
  30. Good (tube) audio shows in the US?
  31. Please help me de-hum my new pre
  32. Help for newbie
  33. Simple ReAmp Mod? Help with Input Impedances, Please!
  34. Which of these two phono stages
  35. Crosley radio
  36. Small tube amp for headphones/computer speakers?(first post)
  37. Peculiar Fisher circuit
  38. Hum in Grounded Grid Pre
  39. Counterpoint SA-1000
  40. K-502 How to select a potentiometer
  41. What are these Christmas light things?
  42. a CHEAP integrated tube amp kit-anybody?
  43. My amp is acting like a transducer!?
  44. Transformer current question
  45. Brimar date codes?
  46. Home made SE 300B amp
  47. Parallel Push Pull 6AS7 or 6080
  48. random crackle ? (McMartin MA-20)
  49. KT88 filament failure - twice on same socket
  50. Solid State Regulator for tube amp
  51. Proposed screen-drive amp design... comments, please?
  52. SimpleSE PCB out of stock
  53. Any good explanation of Passive EQ Filters??
  54. terraplane 300B
  55. Sun Audio transformers
  56. Vacuum State RTP5.
  57. Schematics for Audio Innovations s1000 pre
  58. Tube amp for newbye
  59. 3C24SE amp...
  60. Meixing MingDa MC767-RD
  61. confusing transformer connections
  62. Have to mod K-502 to 4Ohms from 8
  63. SOund of 3B28 vs. 866A
  64. S3E Vacuum Tube
  65. Tube audio & "3 dimensionality"
  66. Darling monoblocks
  67. Testing 350B with B & K 747A
  68. Interstage transformer for balanced amp question
  69. Filament transformer questions
  70. dBm or dBV Audio Voltmeter
  71. VTL MB250 Signature monoblock Manual..
  72. Choke phase spliter
  73. Output transformer DC resistance..
  74. Chassis layout?
  75. Jolida schematic questions
  76. Tube Phono preamp kit?
  77. Does size really matter - SE Output
  78. 437A testing
  79. Tube Amp reverb noise, no vibrato intensity, unknown model. Help please
  80. What to do with a 5k output transfomer?
  81. adapter?
  82. Studer 52
  83. Safety ground question
  84. Old PS questions (EL34 replacement), and any Aus people know BWD?
  85. Darling 1626 amp
  86. Blackheart 5 watt
  87. What is this tube amp
  88. Extry, Extry, Blind Squirrel Finds Nut -sequence
  89. Why is distortion harmonic?
  90. Source for OPT
  91. EL34 to RL12P35 converting
  92. calculating total current draw
  93. Allied Radio (Knight) KA-55 schematic
  94. 6F6G Amplifier
  95. good book/article about using oscilloscopes?
  96. how to attach photos
  97. Is 450V the max of triode strapped 6l6gc
  98. Separate power supply - Umbilical Cord
  99. tube amp being weird -- any ideas
  100. need to discharge psu safely
  101. Jadis DA7/defy power amplifier mods
  102. 5.3v on 6SN7 filament?
  103. The Valve Wizard
  104. Mercury vapor rectifier tube question
  105. An Indiana Yankee in Putin's court.
  106. Switching over to a fixed bias
  107. Dynamic load line analysis using music and speaker load
  108. Capacitance in PSU
  109. preamp line ctt
  110. Genalex KT-88 reissue
  111. Combine EF80 with EL84
  112. 2A3 maximum plate voltage
  113. Amplifier Response Stability & All That.
  114. 100k linear pots, any idea?
  115. 6550, 6L6, or 6V6??
  116. grid-stopper resistor
  117. cathode bypass caps suggestions please for newbie
  118. Need Schematic-H&K B.A.T.T.
  119. 6EJ7 phono preamp?
  120. Impressions of the Ella, a pp EL34
  121. 30L15 / PCC805 - What can I use them for?
  122. Ultra Cheap transformers?
  123. Push-pull output impedance
  124. Tube amp cost
  125. 830b
  126. Leak Tl/12+
  127. Toroid Trafo as choke
  128. in search of a 3c33 dual triode.....
  129. Question about MiniBlok II Schematic
  130. Wavebourn Alligator amplifier
  131. Best Tube Testers?
  132. Rusky version EF86
  133. Melos SHA Gold Issue
  134. Tubelab Simple SE & Edcor
  135. Erratic tube activity
  136. Bogen Front End
  137. Maybe a Ruskie
  138. Another kind of hybrid
  139. Output impedance
  140. GU29 Amp. Schematic - Audioromy or similar
  141. Power On Indicator Light
  142. Newbie Aikido power supply question
  143. Se output transformer question
  144. Aikido hum
  145. Output transformer replacement... Worth it?
  146. Almarro A205A schematic
  147. Valves World question
  148. diodes before plate load
  149. power tubes..newbie question.
  150. Need Help 12BH7 Tube test.
  151. Tube Virgin
  152. Chassis layout help
  153. Maybe this is why 300b's dont last as long
  154. High-voltage bench power supply
  155. Ebay Tube amp buy disaster
  156. HK cheap SE OTPs...hmmm
  157. Modded ST70 Done
  158. bad buzz in an EL34 amp
  159. Another radio->Gtr amp mod question
  160. yaoin
  161. What is the safest method to plot characteristic curves without ruining the tubes
  162. Screen grid zeners; which?
  163. Another one I don't get
  164. 6BG6GA adapter instructions needed
  165. got an EC8020
  166. Identifying these Valvos.
  167. Converting tube guitar amp to Hi-Fi amp
  168. 21kW audio power amp?
  169. Quicksilver conversion
  170. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  171. Hammond Transformers in Montreal/Canada
  172. Can't find data for 8624
  173. Any advice on modifying a 2A3 SET amp to parafeed?
  174. Output impedance for non published PP configuration
  175. Grid stopper resistor required (KT66)?
  176. Ask Jan First OPTs
  177. For what are high mu triodes still useful?
  178. CCa "low noise"?
  179. Upgrading my Audio Research VT 130 SE Tube amp
  180. 100ma FSD voltmeter
  181. Conqueror schematic
  182. Bassman 135 OT
  183. Ground reference
  184. Overdriven Capacitor?
  185. Tone Controls?
  186. My first "from scratch" design, SE KT88..........
  187. OPTs of questionable utility
  188. 6336 as a Rectifier
  189. tube power supply
  190. Anyone read Russian?
  191. PSU - dropping resistors?
  192. pre-amp design, just curious about your thoughts here.
  193. Using isolation transformer as a PSU transformer???
  194. KT66 loosing its getter
  195. Mullard schematic?
  196. Mikale Abdellah SE KT88 B+ voltage?
  197. Layout software
  198. Does anyone have any schematics for a parafeed SET amp?
  199. music angel kt88
  200. CB radio
  201. The end of the 300b Dream?
  202. Voltage divider to reduce 6v dc to 2vdc
  203. oil injected rca cables?
  204. Modification.....
  205. CHOKY'S EC8010 preamp
  206. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  207. tube checker
  208. 300B tube going dead after a few months
  209. KT88 se build NO GAIN please help
  210. mengyue mini valve amplifier
  211. Preamp suggest, please.
  212. Problem: Severe power transformer and choke vibration
  213. Amp Hack schematic questions
  214. This circuit ok?
  215. Tube ID anyone?
  216. Posted new books and data
  217. The sound of a failing tube rectifier?
  218. Proyect with PL36 and N2P (Russian ECC83)
  219. 300b LTspice model with grid current?
  220. Tri-amp using 2a3 SETs
  221. TentLabs Directly Heated Tubes Supply
  222. Bevois Valley Design Question
  223. Kofi Annan in: "Oscillation Blues"
  224. Common mode choke model
  225. UTC 20 Watt Amp - Any Experience?
  226. 6cz5s for EL84s
  227. The 120Hz Blues...
  228. Amplitrex AT-1000 Tube Tester
  229. audio amp. versus guitar amp
  230. Grounding points....
  231. Cap values for CLC filter
  232. Tube glows red hot, blows fuse
  233. Independent Bias Adjust for Each Tube?
  234. Mesa Boogie Maverick schematic any1?
  235. KT-88 from a book
  236. Modelling PSU?!
  237. DD amp for ESLs...
  238. Today's tube manufacters, best is?
  239. Advice on hum in phono stage
  240. Cathode follower & SRPP q
  241. FREDs on PSU
  242. Hybrid Shenanigans
  243. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  244. 5AR4 heaters
  245. Bad Grounding,or Cheap Pot??
  246. Tube Construction Handbook
  247. WE 350: dry bass?
  248. What size capacitor I use for a 2A3 or 300B cathode bypass?
  249. Need helps with building poweramp stage
  250. Noah's Ark for electron tubes

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