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  1. Western Electric plant
  2. Pentod PP - too much NFB needed to sound nice?
  3. Lf351 replacement for Curcio Daniel I
  4. How bad is grounding one side of AC filament ?
  5. New matched tubes - where to use them
  6. Glow Tube (0B2) Help
  7. Bose 901 + Tube amps
  8. Tube tape NR
  9. Ming Da MC-34B fuse value?
  10. Potentiometer with bass boost pin for Simple SE?
  11. Volume pot for TubelabSE 300B recommendation ?
  12. (help) Make a 13.8V 50 Amp continueous current
  13. Toy amp.
  14. Looking to build a 25-30 WPC Push Pull amp - Need Help
  15. Quicksilver 8417 question
  16. GSM interference
  17. <WTA>Tube biased by LED
  18. source for knobs
  19. Lundahl 4-30 Build
  20. Anyone Have Info On Triode Board For MK IV?
  21. I would like to DIY Marantz model9
  22. 813se DIY OPT problems
  23. Got a big output trafo I want to use.
  24. building S5 k-amp
  25. EL84 max power for HiFi Amp
  26. Question about cathode bypass capacitor:
  27. Curcio Daniel II builders?
  28. 13E1 SE design
  29. Booster Amp for low powered SET
  30. Soft starting the rectifier
  31. Tube preamp components help
  32. My own version of the EAR 834P Clone
  33. Eico HF86 modifications
  34. Heaters and centre tap
  35. DHT's, fixed bias, sharred filament supply
  36. Do New JJ GZ34's have less B+ Drop?
  37. Grounded, Floating, or Thermistor-To-Case for Center Tap
  38. Hi, looking for some info on tube amplifier design basics
  39. Nifty little (cheap ) transformer for bias supply
  40. Problems with my ARC VT 130SE
  41. Telefunken V69B - Tube Amp
  42. HV Regulator
  43. EL95 mini SE
  44. NOS vs. Chinese Plate Caps
  45. TL783 regulated B+ 250V PSU schematic
  46. Tube buffer for electronic keyboards used in a band?
  47. 6922 tube buffer
  48. 300B grid resistance
  49. 6AU6 Aikido in Triode mode?
  50. brown crud?
  51. Steve Bench's tube crossover
  52. Bogen M120 bass guitar amp coversion
  53. Wierd striation on 6L6GC plate
  54. LT1085-based regulated 6.3v heater supply
  55. Are these tubes cooked?
  56. New Build Power Up Advice
  57. Mic pre idea
  58. Choosing the right mullard design to match the Foreplay III and Ariels
  59. Dumb question on Coupling cap ratings...
  60. European Triode Festival 2008 - couple of seats left
  61. Building PRETOR toroid preamp
  62. ACT2 - ConradJohnson by 818design
  63. PS questions?
  64. Frank's Tube Database Down?
  65. Anybody try Euro DHTs like RE134, RE304 etc??
  66. Need help...again :)
  67. idea for a simple bias servo for AB PP
  68. GU-32/GI-30 tube PP amp
  69. Switch-mode PSU for tube heaters?
  70. Hammond Primary Lead color is wrong?
  71. A newbie need helps on the very 1st tube PreAmp
  72. why does 12u7 need certain amount of gain to stop hum 120???
  73. EL34 Pushpull imbalance
  74. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  75. Rozenblit Grounded Grid Cascode Pho Preamp Project
  76. Driving the kt88/6550 in set mode
  77. 6550a question for engineer?
  78. Yl1260
  79. Parts layout diagram for SE amp
  80. Da 42 Triode
  81. Bogen CHB100 Power Supply Question
  82. Testing of russian tubes on B&K 747B
  83. VR150 use
  84. First Valve DIY Project
  85. I'm having grid1 current in EL34
  86. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  87. SEPTOR AT-amp (Anti-Triode) being built
  88. Sophia Electric el34 mods/upgrades
  89. Looking to build....
  90. Bias resistor for source follower driver
  91. PL 519 electrical characteristics
  92. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  93. My 6AS7G Fuse Link Checker
  94. Anyone ever had issues with One Electron?
  95. 35% off sale at RadioDaze
  96. phase splitter with Tr ?
  97. Chasing my Simple SE problem...
  98. Zenith stereo, EL84 SE. What to do...
  99. Free TVA-1 rev.3 schematic
  100. Bat Vk-60
  101. Trouble with amp 6V6
  102. 5-125 UL curves anyone?
  103. Mod it or scrap it?
  104. Bogen M330
  105. 1st Tube Amp - What to build?
  106. 6J5 weird phase inverter
  107. swinging CCS PP output stage
  108. Varying 2 tube amp characteristics: SE treble and richness
  109. Jadis Defy 7 Schematic
  110. microphonic sub-miniature tubes?
  111. Transformer distortion (THD)
  112. Options for replacing EF86? E180F?
  113. changing an integrated tube amp to a power amp
  114. Nice tube test supply
  115. Looking for 300B 2.5V heater vendor
  116. Cap to bypass bias battery
  117. 2A3 SE parafeed with PP-transformer
  118. Preamp Voltages
  119. TVA-1 "Export" circuit/schematic?
  120. 12ax7 series is this correct??
  121. Yet Another Phono Stage Suggestions Thread
  122. 15% off sale at Soniccraft
  123. Bias Mode Switching Question (guitar Amp)
  124. Sizing Coupling Capacitors
  125. budget xformer for 829B pentode mode PP (class AB) ?
  126. preamp layout suggestions please
  127. Capacitors and hype!
  128. Transofrmer secondaries
  129. please help 407a
  130. OPT Grounding / Crosstalk
  131. SE With shared Rk in output
  132. Unsolved problem EL34/12AT7/5AR4
  133. Radford STA25 service UK
  134. My tube DIY Web page, translate into English
  135. suggestion about AIKIDO PRE
  136. jackson tube tester 648s manuals
  137. Hashimoto A-105 - 6S4A
  138. Looking For Counterpoint SA2000 Schematic
  139. Where do you put the standby switch
  140. Simple SE Schematic
  141. Operating point for 6GK5
  142. Audio Research St-70-c3
  143. Help identifying tube amp
  144. Ed8000
  145. power suply for Pre & Phono Use tube 6BM8
  146. ESLDD with "anti-triode"
  147. Schematics border patrol psu
  148. Tubelab PCBs for an 845 - a good idea?
  149. Bias supply idea
  150. dynaco st 70 c3
  151. KT88 and the 6550
  152. crate vintage club problem
  153. GM70/GM70 parafeed SET?
  154. Genalex repro KT88s
  155. Grid - Screen Alignment (X-Rays)
  156. tube matching
  157. DC heaters for 5687 in Aikido?
  158. Connection Jensen 4-pole
  159. Measuring Output Power
  160. Modelling stereo PSU in PSUD ...
  161. Speaker matching transformer.
  162. Sowter's Radford transformer
  163. Cathode bias 6LU8 UL/Triode
  164. Cathode bias 6LU8 UL/Triode
  165. Sourcing ASC 100uf X386S capacitor
  166. Looking for a linear triode for lowish B+ CF (6N6P?)
  167. need spice model 5814a
  168. 420T or 10E/33B ?????????
  169. Decca DMI-73 and EL-84 weirdness
  170. DIY JTM 45/100 Style Guitar Amp
  171. Pentode guys: important to decouple g2 supply between stages?
  172. Ccs
  173. The Friday Chuckle
  174. Need help deciding what to build
  175. Why does red plate spell early death?
  176. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  177. fisher 400 tweaking issues
  178. GM70 an 813 strapped in SE-UL - circuits?
  179. need help on transformer secondaries connection
  180. Partridge audio output transformer value
  181. Low mu Preamp Triodes as Power Output Tubes
  182. 300B Transformer temperature
  183. Standby Switch Problems
  184. Worth repairing?
  185. Measuring current distortion
  186. GM70 sockets?
  187. high AC mains problem
  188. 250 V PSU help
  189. EL34 UL Curves
  190. datasheet for ge 5star and rca command 5814a?
  191. PS choke voltage/current quetsion
  192. push pull power amp design question (a lot of actually :) )
  193. Knight Amplifier Repair Question
  194. Grant G100AS circuit diagram?
  195. Hashimoto A-105 - summary so far
  196. Related Audio Worlds largest
  197. Why do valves go microphonic?
  198. Allen Wright Superreg manual
  199. Need help on resistor values for 5687 aikido kit
  200. Pioneer SM83 PP amps
  201. Techtube valves/tubes
  202. Datasheet for Russian 6p3s-e
  203. Continually Blowing Fuses
  204. I am done with AES -- a short rant.
  205. CineMag CMMI-15/15B
  206. In market for a Capacitor meter - for a tube project!
  207. What amp(s) would you buy under $1500
  208. Etf 2008
  209. All FET Aikido
  210. what 12au7 have different tone ??vintage and modern
  211. Can 3.5W 2A3 amp drive proAc 1SC?
  212. British seven pin sockets
  213. Pentodes, triode mode and grid screen dissipation 101
  214. Yakov Aronov amps
  215. Suitable tube pre-amp for Phase Linear 400?
  216. Goldpoint value?
  217. TubelabSE 300B power transformer ?
  218. 316A socket
  219. Hashimoto A105 - some results (ECC99)
  220. Some uses for old transformers
  221. Power Supply Question
  222. PY82 as rectifier
  223. Jackson 637 Tube tester Info needed
  224. pro-ject tube box
  225. Some dumb Questions on Heater CCS supply
  226. Aikido loses power?
  227. Quicksilver 8417/12FQ7 mods
  228. Calculations for an AIKIDO
  229. Music Angel Empty shells
  230. Enclosure for tube amp/speaker/reverb unit
  231. Need help troubleshooting preamp trouble
  232. Compactrons on the brain!
  233. XSE vs. GSXE Edcors
  234. output transformer
  235. How to simulate OPT in LTspice?
  236. 311-b
  237. PSU Design help !!!
  238. BDT Preamp build
  239. Russian tubes / capacitors purchasing
  240. Bored with Leak ST20 - ideas?
  241. KT-88 Music Angel problems with sound level
  242. Fusion Hybrid 300B
  243. I'm new here..... :(
  244. DIY/Buy/Kit
  245. Ralph from Atma-sphere will be giving a talk 09/16
  246. Modified USB DAC board, DDDAC with triode buffer
  247. LS50/GU50 Both Grid Drive
  248. Aikido filament question
  249. 6l6 Se.
  250. Feedback requested on 7591 PP design

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