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

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