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  1. Tubelab SE finished but need help.
  2. Oscilloscope Probes for Tube Work
  3. ECC88 vs 6SN7
  4. Good (tube) audio shows in the US?
  5. Please help me de-hum my new pre
  6. Help for newbie
  7. Simple ReAmp Mod? Help with Input Impedances, Please!
  8. Which of these two phono stages
  9. Crosley radio
  10. Small tube amp for headphones/computer speakers?(first post)
  11. Peculiar Fisher circuit
  12. Hum in Grounded Grid Pre
  13. Counterpoint SA-1000
  14. K-502 How to select a potentiometer
  15. What are these Christmas light things?
  16. a CHEAP integrated tube amp kit-anybody?
  17. My amp is acting like a transducer!?
  18. Transformer current question
  19. Brimar date codes?
  20. Home made SE 300B amp
  21. Parallel Push Pull 6AS7 or 6080
  22. random crackle ? (McMartin MA-20)
  23. KT88 filament failure - twice on same socket
  24. Solid State Regulator for tube amp
  25. Proposed screen-drive amp design... comments, please?
  26. SimpleSE PCB out of stock
  27. Any good explanation of Passive EQ Filters??
  28. terraplane 300B
  29. Sun Audio transformers
  30. Vacuum State RTP5.
  31. Schematics for Audio Innovations s1000 pre
  32. Tube amp for newbye
  33. 3C24SE amp...
  34. Meixing MingDa MC767-RD
  35. confusing transformer connections
  36. Have to mod K-502 to 4Ohms from 8
  37. SOund of 3B28 vs. 866A
  38. S3E Vacuum Tube
  39. Tube audio & "3 dimensionality"
  40. Darling monoblocks
  41. Testing 350B with B & K 747A
  42. Interstage transformer for balanced amp question
  43. Filament transformer questions
  44. dBm or dBV Audio Voltmeter
  45. VTL MB250 Signature monoblock Manual..
  46. Choke phase spliter
  47. Output transformer DC resistance..
  48. Chassis layout?
  49. Jolida schematic questions
  50. Tube Phono preamp kit?
  51. Does size really matter - SE Output
  52. 437A testing
  53. Tube Amp reverb noise, no vibrato intensity, unknown model. Help please
  54. What to do with a 5k output transfomer?
  55. adapter?
  56. Studer 52
  57. Safety ground question
  58. Old PS questions (EL34 replacement), and any Aus people know BWD?
  59. Darling 1626 amp
  60. Blackheart 5 watt
  61. What is this tube amp
  62. Extry, Extry, Blind Squirrel Finds Nut -sequence
  63. Why is distortion harmonic?
  64. Source for OPT
  65. EL34 to RL12P35 converting
  66. calculating total current draw
  67. Allied Radio (Knight) KA-55 schematic
  68. 6F6G Amplifier
  69. good book/article about using oscilloscopes?
  70. how to attach photos
  71. Is 450V the max of triode strapped 6l6gc
  72. Separate power supply - Umbilical Cord
  73. tube amp being weird -- any ideas
  74. need to discharge psu safely
  75. Jadis DA7/defy power amplifier mods
  76. 5.3v on 6SN7 filament?
  77. The Valve Wizard
  78. Mercury vapor rectifier tube question
  79. An Indiana Yankee in Putin's court.
  80. Switching over to a fixed bias
  81. Dynamic load line analysis using music and speaker load
  82. Capacitance in PSU
  83. preamp line ctt
  84. Genalex KT-88 reissue
  85. Combine EF80 with EL84
  86. 2A3 maximum plate voltage
  87. Amplifier Response Stability & All That.
  88. 100k linear pots, any idea?
  89. 6550, 6L6, or 6V6??
  90. grid-stopper resistor
  91. cathode bypass caps suggestions please for newbie
  92. Need Schematic-H&K B.A.T.T.
  93. 6EJ7 phono preamp?
  94. Impressions of the Ella, a pp EL34
  95. 30L15 / PCC805 - What can I use them for?
  96. Ultra Cheap transformers?
  97. Push-pull output impedance
  98. Tube amp cost
  99. 830b
  100. Leak Tl/12+
  101. Toroid Trafo as choke
  102. in search of a 3c33 dual triode.....
  103. Question about MiniBlok II Schematic
  104. Wavebourn Alligator amplifier
  105. Best Tube Testers?
  106. Rusky version EF86
  107. Melos SHA Gold Issue
  108. Tubelab Simple SE & Edcor
  109. Erratic tube activity
  110. Bogen Front End
  111. Maybe a Ruskie
  112. Another kind of hybrid
  113. Output impedance
  114. GU29 Amp. Schematic - Audioromy or similar
  115. Power On Indicator Light
  116. Newbie Aikido power supply question
  117. Se output transformer question
  118. Aikido hum
  119. Output transformer replacement... Worth it?
  120. Almarro A205A schematic
  121. Valves World question
  122. diodes before plate load
  123. power tubes..newbie question.
  124. Need Help 12BH7 Tube test.
  125. Tube Virgin
  126. Chassis layout help
  127. Maybe this is why 300b's dont last as long
  128. High-voltage bench power supply
  129. Ebay Tube amp buy disaster
  130. HK cheap SE OTPs...hmmm
  131. Modded ST70 Done
  132. bad buzz in an EL34 amp
  133. Another radio->Gtr amp mod question
  134. yaoin
  135. What is the safest method to plot characteristic curves without ruining the tubes
  136. Screen grid zeners; which?
  137. Another one I don't get
  138. 6BG6GA adapter instructions needed
  139. got an EC8020
  140. Identifying these Valvos.
  141. Converting tube guitar amp to Hi-Fi amp
  142. 21kW audio power amp?
  143. Quicksilver conversion
  144. DC PSU for both 6.3vdc and 5vdc from one 6.3vac transformer?
  145. Hammond Transformers in Montreal/Canada
  146. Can't find data for 8624
  147. Any advice on modifying a 2A3 SET amp to parafeed?
  148. Output impedance for non published PP configuration
  149. Grid stopper resistor required (KT66)?
  150. Ask Jan First OPTs
  151. For what are high mu triodes still useful?
  152. CCa "low noise"?
  153. Upgrading my Audio Research VT 130 SE Tube amp
  154. 100ma FSD voltmeter
  155. Conqueror schematic
  156. Bassman 135 OT
  157. Ground reference
  158. Overdriven Capacitor?
  159. Tone Controls?
  160. My first "from scratch" design, SE KT88..........
  161. OPTs of questionable utility
  162. 6336 as a Rectifier
  163. tube power supply
  164. Anyone read Russian?
  165. PSU - dropping resistors?
  166. pre-amp design, just curious about your thoughts here.
  167. Using isolation transformer as a PSU transformer???
  168. KT66 loosing its getter
  169. Mullard schematic?
  170. Mikale Abdellah SE KT88 B+ voltage?
  171. Layout software
  172. Does anyone have any schematics for a parafeed SET amp?
  173. music angel kt88
  174. CB radio
  175. The end of the 300b Dream?
  176. Voltage divider to reduce 6v dc to 2vdc
  177. oil injected rca cables?
  178. Modification.....
  179. CHOKY'S EC8010 preamp
  180. Using a Grid Choke On the 2A3 when the input/driver is a Pentode?
  181. tube checker
  182. 300B tube going dead after a few months
  183. KT88 se build NO GAIN please help
  184. mengyue mini valve amplifier
  185. Preamp suggest, please.
  186. Problem: Severe power transformer and choke vibration
  187. Amp Hack schematic questions
  188. This circuit ok?
  189. Tube ID anyone?
  190. Posted new books and data
  191. The sound of a failing tube rectifier?
  192. Proyect with PL36 and N2P (Russian ECC83)
  193. 300b LTspice model with grid current?
  194. Tri-amp using 2a3 SETs
  195. TentLabs Directly Heated Tubes Supply
  196. Bevois Valley Design Question
  197. Kofi Annan in: "Oscillation Blues"
  198. Common mode choke model
  199. UTC 20 Watt Amp - Any Experience?
  200. 6cz5s for EL84s
  201. The 120Hz Blues...
  202. Amplitrex AT-1000 Tube Tester
  203. audio amp. versus guitar amp
  204. Grounding points....
  205. Cap values for CLC filter
  206. Tube glows red hot, blows fuse
  207. Independent Bias Adjust for Each Tube?
  208. Mesa Boogie Maverick schematic any1?
  209. KT-88 from a book
  210. Modelling PSU?!
  211. DD amp for ESLs...
  212. Today's tube manufacters, best is?
  213. Advice on hum in phono stage
  214. Cathode follower & SRPP q
  215. FREDs on PSU
  216. Hybrid Shenanigans
  217. How hard is it to rewire my amp from 6av6/6cg7 to just 12ax7 types?
  218. 5AR4 heaters
  219. Bad Grounding,or Cheap Pot??
  220. Tube Construction Handbook
  221. WE 350: dry bass?
  222. What size capacitor I use for a 2A3 or 300B cathode bypass?
  223. Need helps with building poweramp stage
  224. Noah's Ark for electron tubes
  225. Fixed Bias suggestions
  226. OD3/OA3 voltage regulation design
  227. DHT filament heating with SMPS + CCS
  228. Using SE transformers in a PP circuit
  229. EDCOR Releases Line of Guitar OPT's
  230. Schematic: Audio Innovations, The first audio amplifier
  231. Restoring 1948 Gibson GA-30 guitar amp(tube)
  232. Now THIS is tube DIY to the extreme
  233. Dynaco mkIII A431 op's
  234. Alternative to Power Transformer
  235. Help with e180f and ixys current reg
  236. Building a "Hiwatt" tube Bass Amp
  237. help! no power, im lost
  238. Jerrycan amp (RH34SE)
  239. 12B4 Updates
  240. www.diykits.com.hk stepped volume control ... any good?
  241. Hammond L-100 conversion
  242. Anyone have the ASL model MGSI15 schematic ?
  243. Replacement for single-winding OPT?
  244. Buzz in new amp...
  245. 48V B+ linestage
  246. Line-Stage Opinion Question
  247. Audio applications of sweep tubes and ratings
  248. Differences in structure between parafeed ad gapped OPTs
  249. Take a look and let me know what you think
  250. Printed circuit board designing?

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