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  1. S5 K-16LS mods, tweaks?
  2. 5687 fully balanced line stage
  3. Subminiature sockets
  4. What Do I Have Here?
  5. Bad vacuum?
  6. Th. Lösch Phono Amp: Question about IC used & ECC808 to ECC83
  7. Balanced 24V Aikido question
  8. How to wire a 'Buck' transformer
  9. OT question - will it work?
  10. ID Unknown Tube
  11. Time delay start board for tube amps
  12. Hum reduction ideas (again)
  13. Utc Ls-33
  14. K-16ls
  15. Potential valve damping tweak
  16. Conversion Tube PA and Bass Tone
  17. Wanted. Simple EL34 Push Pull Design
  18. PCB advice
  19. Hybrid voltage quadrupler?
  20. my fu80 amp
  21. Pre-amp for BeoMaster
  22. Question re: chokes
  23. Inundated Electrolytics
  24. power transformer recommendation
  25. PS decoupling cap placement
  26. USSR Russian Caps. KBG-MN or K75-24?
  27. #10SE Tested project
  28. schematics help
  29. HF Decoupling Caps questions
  30. 1A7 Heptode (Pentagrid Converter) Audio Preamplifier
  31. Useful power transformer design thread on Analogue
  32. Understanding Simple SE design choices
  33. Fender Pro Amp
  34. Hewlet Packard transformer
  35. 6BG6 for KT66
  36. new learning
  37. TV-7D/U Tube setting --- 6550
  38. ecc40 LTP
  39. Latest incarnation of music angel kt88
  40. Tubelab SE oscillation?
  41. 6SL7 5E3 - together at last?
  42. AN Shinri schematic wanted
  43. Found a box of old toobs
  44. Choke input filter LF noise
  45. Aikido line stage - plus phono line stage
  46. Hook up wire?
  47. Irritating problem with soft start
  48. OTL with 6AN5
  49. Mono Blocs Completed...
  50. Magic Eye for solid state Tuner?
  51. a question about drive power
  52. converting BAL to UNBAL using tubes and without transformers
  53. Aikiado question
  54. Top cap tubes+ arc welder
  55. Small beginner amplifier and hello :)
  56. Blackburn MicroTech TechTube(TM) Valves update!
  57. Resistor setup for integrated amp & headphones?
  58. Brook 2A3 PP amp ID help
  59. heater voltage
  60. kobayashi 300B push-pull
  61. Triode strapping a tetrode...
  62. Any info on 3572 Half wave Rectier
  63. Question Conrad Johnson reg. psu?
  64. Another 300B SE
  65. 7-pin Low Rp tube
  66. S-5 K-16LS Kit arrived in Germany !!
  67. Transcendar RIP?
  68. 6N6P in an Aikido?
  69. Were can i bay a Telefunken 6ak5 ?
  70. SE 245 driverstage
  71. 12ax7 srpp dac output
  72. How this circuit works (Baby Huey type)
  73. New tubeamp
  74. Snubber caps
  75. Counterpoint sa220
  76. Resistor before tube rectifier
  77. TCJ Push-Pull calculator v2
  78. Heathkit AG-9A audio generator schematic !!!
  79. Sources for James Transformers
  80. High Voltage Soldering (IPC Standards?)
  81. Speakers for Flea Powered Amps <1.5W
  82. Opinions on Allen & Bradley Carbon Composite resistors
  83. wich tube is best for the yaqin cd buffer ?
  84. Mikael Abdellah's SE KT88 bass response + tightness
  85. How best to use the PSU xformer I have
  86. 6L6GC AB2 Amp
  87. Kofi Annan in: "I'd Like Me a Mic Pre!"
  88. Too much gain - help with changing driver tube.
  89. EL95 SE schematic wanted
  90. test settings hickok i177B for 5ar4/gz34
  91. Gibson Ga-20 rvt reverb problems
  92. good value (i.e. cheap) OPT in uk?
  93. Input xfmr, diff stage, CCS questions
  94. Theoretical OPT question
  95. input/driver stage for kt88/6550
  96. thyratron switching
  97. Making component choices (6V6/EL84 PP)
  98. Which socket for a 5Y3??
  99. using #47 in p-p
  100. 6463-12b4a srpp?
  101. Need some help identifying which tubes are suitable
  102. Tube Priceing
  103. edcor output transformer advice
  104. Non top-cap tubes for plasma tweeters
  105. Intermittent Static on ARC REF 3 Preamp
  106. Have you guys seen this yet?
  107. ECC88 heater overvoltage damage?
  108. Recommended designs
  109. Aikido Phono PCB Modifications
  110. Need Power supply advice for Andreas 845
  111. Phonodude question
  112. Power Supply for Aikido Phono Pre
  113. Completed New Combo Amplifier
  114. Want to Build my first Tube Amp
  115. single tube amp ~pspice problem
  116. Modding a tonebone to switch to pentode triode operation?Can this be done??
  117. Relyon KT88/EL34 SE issue, schem attached
  118. Search 35T Schematic
  119. Hickok 600A, shattered mercury rectifier...
  120. Pete Millett Low-Mu Triode Preamp
  121. First scope/buying oscilloscope probes
  122. thyratron rectifier
  123. Need help making some choices on what to build
  124. A2 curves and curvecaptor.
  125. damper diodes ....
  126. Different Rectifier Warmup Times
  127. stupid question of the day
  128. Fisher 400 Output Transformers
  129. Tube amp repair
  130. Hi-end 845 with only two stage
  131. PL519 Heaters in series blow fuse
  132. Looking for parts to tinker with
  133. KT88 Recommendations?
  134. Anyone Interested in Pete Millett Hybrid Amp PCB's?
  135. Mirror of Steve Bench's site
  136. Quick Question About RCA Input
  137. Built an amp kit!
  138. Holy Smoking Toroid Winder
  139. Group Buy for Experimenter's 9 and 7 pin Tube Socket PCBs
  140. why do tubes have a treble lost ???
  141. Low Frequency Mains Noise
  142. Help modifying circuit
  143. Ever heard sth like this?
  144. dual volume control
  145. Need DIY help in Los Angeles area with tube preamp
  146. 6c19p se otl
  147. pt
  148. "Killer" Screen Driven Push-Pull Amp Initial Queries
  149. fixed vs. cathode bias
  150. RH84 Push pull?
  151. Cheapfield project
  152. heater connection problem
  153. What to do with this PP OPT?
  154. Question about Bridging
  155. White Fuzzy furry growth..........TV-2C/U
  156. Tweaks for 845 Power amp
  157. the aardvark grows a spud!
  158. WEST output transformers?
  159. Tube Buffer Success!
  160. Lafayette LA-234 Amplifier
  161. filter choke voltage rating
  162. Dealing with Mr. Miller (phono)
  163. Western Electric plant
  164. Pentod PP - too much NFB needed to sound nice?
  165. Lf351 replacement for Curcio Daniel I
  166. How bad is grounding one side of AC filament ?
  167. New matched tubes - where to use them
  168. Glow Tube (0B2) Help
  169. Bose 901 + Tube amps
  170. Tube tape NR
  171. Ming Da MC-34B fuse value?
  172. Potentiometer with bass boost pin for Simple SE?
  173. Volume pot for TubelabSE 300B recommendation ?
  174. (help) Make a 13.8V 50 Amp continueous current
  175. Toy amp.
  176. Looking to build a 25-30 WPC Push Pull amp - Need Help
  177. Quicksilver 8417 question
  178. GSM interference
  179. &lt;WTA&gt;Tube biased by LED
  180. source for knobs
  181. Lundahl 4-30 Build
  182. Anyone Have Info On Triode Board For MK IV?
  183. I would like to DIY Marantz model9
  184. 813se DIY OPT problems
  185. Got a big output trafo I want to use.
  186. building S5 k-amp
  187. EL84 max power for HiFi Amp
  188. Question about cathode bypass capacitor:
  189. Curcio Daniel II builders?
  190. 13E1 SE design
  191. Booster Amp for low powered SET
  192. Soft starting the rectifier
  193. Tube preamp components help
  194. My own version of the EAR 834P Clone
  195. Eico HF86 modifications
  196. Heaters and centre tap
  197. DHT's, fixed bias, sharred filament supply
  198. Do New JJ GZ34's have less B+ Drop?
  199. Grounded, Floating, or Thermistor-To-Case for Center Tap
  200. Hi, looking for some info on tube amplifier design basics
  201. Nifty little (cheap ) transformer for bias supply
  202. Problems with my ARC VT 130SE
  203. Telefunken V69B - Tube Amp
  204. HV Regulator
  205. EL95 mini SE
  206. NOS vs. Chinese Plate Caps
  207. TL783 regulated B+ 250V PSU schematic
  208. Tube buffer for electronic keyboards used in a band?
  209. 6922 tube buffer
  210. 300B grid resistance
  211. 6AU6 Aikido in Triode mode?
  212. brown crud?
  213. Steve Bench's tube crossover
  214. Bogen M120 bass guitar amp coversion
  215. Wierd striation on 6L6GC plate
  216. LT1085-based regulated 6.3v heater supply
  217. Are these tubes cooked?
  218. New Build Power Up Advice
  219. Mic pre idea
  220. Choosing the right mullard design to match the Foreplay III and Ariels
  221. Dumb question on Coupling cap ratings...
  222. European Triode Festival 2008 - couple of seats left
  223. Building PRETOR toroid preamp
  224. ACT2 - ConradJohnson by 818design
  225. PS questions?
  226. Frank's Tube Database Down?
  227. Anybody try Euro DHTs like RE134, RE304 etc??
  228. Need help...again :)
  229. idea for a simple bias servo for AB PP
  230. GU-32/GI-30 tube PP amp
  231. Switch-mode PSU for tube heaters?
  232. Hammond Primary Lead color is wrong?
  233. A newbie need helps on the very 1st tube PreAmp
  234. why does 12u7 need certain amount of gain to stop hum 120???
  235. EL34 Pushpull imbalance
  236. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  237. Rozenblit Grounded Grid Cascode Pho Preamp Project
  238. Driving the kt88/6550 in set mode
  239. 6550a question for engineer?
  240. Yl1260
  241. Parts layout diagram for SE amp
  242. Da 42 Triode
  243. Bogen CHB100 Power Supply Question
  244. Testing of russian tubes on B&K 747B
  245. VR150 use
  246. First Valve DIY Project
  247. I'm having grid1 current in EL34
  248. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  249. SEPTOR AT-amp (Anti-Triode) being built
  250. Sophia Electric el34 mods/upgrades

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