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  1. Lundahl 4-30 Build
  2. Anyone Have Info On Triode Board For MK IV?
  3. I would like to DIY Marantz model9
  4. 813se DIY OPT problems
  5. Got a big output trafo I want to use.
  6. building S5 k-amp
  7. EL84 max power for HiFi Amp
  8. Question about cathode bypass capacitor:
  9. Curcio Daniel II builders?
  10. 13E1 SE design
  11. Booster Amp for low powered SET
  12. Soft starting the rectifier
  13. Tube preamp components help
  14. My own version of the EAR 834P Clone
  15. Eico HF86 modifications
  16. Heaters and centre tap
  17. DHT's, fixed bias, sharred filament supply
  18. Do New JJ GZ34's have less B+ Drop?
  19. Grounded, Floating, or Thermistor-To-Case for Center Tap
  20. Hi, looking for some info on tube amplifier design basics
  21. Nifty little (cheap ) transformer for bias supply
  22. Problems with my ARC VT 130SE
  23. Telefunken V69B - Tube Amp
  24. HV Regulator
  25. EL95 mini SE
  26. NOS vs. Chinese Plate Caps
  27. TL783 regulated B+ 250V PSU schematic
  28. Tube buffer for electronic keyboards used in a band?
  29. 6922 tube buffer
  30. 300B grid resistance
  31. 6AU6 Aikido in Triode mode?
  32. brown crud?
  33. Steve Bench's tube crossover
  34. Bogen M120 bass guitar amp coversion
  35. Wierd striation on 6L6GC plate
  36. LT1085-based regulated 6.3v heater supply
  37. Are these tubes cooked?
  38. New Build Power Up Advice
  39. Mic pre idea
  40. Choosing the right mullard design to match the Foreplay III and Ariels
  41. Dumb question on Coupling cap ratings...
  42. European Triode Festival 2008 - couple of seats left
  43. Building PRETOR toroid preamp
  44. ACT2 - ConradJohnson by 818design
  45. PS questions?
  46. Frank's Tube Database Down?
  47. Anybody try Euro DHTs like RE134, RE304 etc??
  48. Need help...again :)
  49. idea for a simple bias servo for AB PP
  50. GU-32/GI-30 tube PP amp
  51. Switch-mode PSU for tube heaters?
  52. Hammond Primary Lead color is wrong?
  53. A newbie need helps on the very 1st tube PreAmp
  54. why does 12u7 need certain amount of gain to stop hum 120???
  55. EL34 Pushpull imbalance
  56. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  57. Rozenblit Grounded Grid Cascode Pho Preamp Project
  58. Driving the kt88/6550 in set mode
  59. 6550a question for engineer?
  60. Yl1260
  61. Parts layout diagram for SE amp
  62. Da 42 Triode
  63. Bogen CHB100 Power Supply Question
  64. Testing of russian tubes on B&K 747B
  65. VR150 use
  66. First Valve DIY Project
  67. I'm having grid1 current in EL34
  68. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  69. SEPTOR AT-amp (Anti-Triode) being built
  70. Sophia Electric el34 mods/upgrades
  71. Looking to build....
  72. Bias resistor for source follower driver
  73. PL 519 electrical characteristics
  74. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  75. My 6AS7G Fuse Link Checker
  76. Anyone ever had issues with One Electron?
  77. 35% off sale at RadioDaze
  78. phase splitter with Tr ?
  79. Chasing my Simple SE problem...
  80. Zenith stereo, EL84 SE. What to do...
  81. Free TVA-1 rev.3 schematic
  82. Bat Vk-60
  83. Trouble with amp 6V6
  84. 5-125 UL curves anyone?
  85. Mod it or scrap it?
  86. Bogen M330
  87. 1st Tube Amp - What to build?
  88. 6J5 weird phase inverter
  89. swinging CCS PP output stage
  90. Varying 2 tube amp characteristics: SE treble and richness
  91. Jadis Defy 7 Schematic
  92. microphonic sub-miniature tubes?
  93. Transformer distortion (THD)
  94. Options for replacing EF86? E180F?
  95. changing an integrated tube amp to a power amp
  96. Nice tube test supply
  97. Looking for 300B 2.5V heater vendor
  98. Cap to bypass bias battery
  99. 2A3 SE parafeed with PP-transformer
  100. Preamp Voltages
  101. TVA-1 "Export" circuit/schematic?
  102. 12ax7 series is this correct??
  103. Yet Another Phono Stage Suggestions Thread
  104. 15% off sale at Soniccraft
  105. Bias Mode Switching Question (guitar Amp)
  106. Sizing Coupling Capacitors
  107. budget xformer for 829B pentode mode PP (class AB) ?
  108. preamp layout suggestions please
  109. Capacitors and hype!
  110. Transofrmer secondaries
  111. please help 407a
  112. OPT Grounding / Crosstalk
  113. SE With shared Rk in output
  114. Unsolved problem EL34/12AT7/5AR4
  115. Radford STA25 service UK
  116. My tube DIY Web page, translate into English
  117. suggestion about AIKIDO PRE
  118. jackson tube tester 648s manuals
  119. Hashimoto A-105 - 6S4A
  120. Looking For Counterpoint SA2000 Schematic
  121. Where do you put the standby switch
  122. Simple SE Schematic
  123. Operating point for 6GK5
  124. Audio Research St-70-c3
  125. Help identifying tube amp
  126. Ed8000
  127. power suply for Pre & Phono Use tube 6BM8
  128. ESLDD with "anti-triode"
  129. Schematics border patrol psu
  130. Tubelab PCBs for an 845 - a good idea?
  131. Bias supply idea
  132. dynaco st 70 c3
  133. KT88 and the 6550
  134. crate vintage club problem
  135. GM70/GM70 parafeed SET?
  136. Genalex repro KT88s
  137. Grid - Screen Alignment (X-Rays)
  138. tube matching
  139. DC heaters for 5687 in Aikido?
  140. Connection Jensen 4-pole
  141. Measuring Output Power
  142. Modelling stereo PSU in PSUD ...
  143. Speaker matching transformer.
  144. Sowter's Radford transformer
  145. Cathode bias 6LU8 UL/Triode
  146. Cathode bias 6LU8 UL/Triode
  147. Sourcing ASC 100uf X386S capacitor
  148. Looking for a linear triode for lowish B+ CF (6N6P?)
  149. need spice model 5814a
  150. 420T or 10E/33B ?????????
  151. Decca DMI-73 and EL-84 weirdness
  152. DIY JTM 45/100 Style Guitar Amp
  153. Pentode guys: important to decouple g2 supply between stages?
  154. Ccs
  155. The Friday Chuckle
  156. Need help deciding what to build
  157. Why does red plate spell early death?
  158. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  159. fisher 400 tweaking issues
  160. GM70 an 813 strapped in SE-UL - circuits?
  161. need help on transformer secondaries connection
  162. Partridge audio output transformer value
  163. Low mu Preamp Triodes as Power Output Tubes
  164. 300B Transformer temperature
  165. Standby Switch Problems
  166. Worth repairing?
  167. Measuring current distortion
  168. GM70 sockets?
  169. high AC mains problem
  170. 250 V PSU help
  171. EL34 UL Curves
  172. datasheet for ge 5star and rca command 5814a?
  173. PS choke voltage/current quetsion
  174. push pull power amp design question (a lot of actually :) )
  175. Knight Amplifier Repair Question
  176. Grant G100AS circuit diagram?
  177. Hashimoto A-105 - summary so far
  178. Related Audio Worlds largest
  179. Why do valves go microphonic?
  180. Allen Wright Superreg manual
  181. Need help on resistor values for 5687 aikido kit
  182. Pioneer SM83 PP amps
  183. Techtube valves/tubes
  184. Datasheet for Russian 6p3s-e
  185. Continually Blowing Fuses
  186. I am done with AES -- a short rant.
  187. CineMag CMMI-15/15B
  188. In market for a Capacitor meter - for a tube project!
  189. What amp(s) would you buy under $1500
  190. Etf 2008
  191. All FET Aikido
  192. what 12au7 have different tone ??vintage and modern
  193. Can 3.5W 2A3 amp drive proAc 1SC?
  194. British seven pin sockets
  195. Pentodes, triode mode and grid screen dissipation 101
  196. Yakov Aronov amps
  197. Suitable tube pre-amp for Phase Linear 400?
  198. Goldpoint value?
  199. TubelabSE 300B power transformer ?
  200. 316A socket
  201. Hashimoto A105 - some results (ECC99)
  202. Some uses for old transformers
  203. Power Supply Question
  204. PY82 as rectifier
  205. Jackson 637 Tube tester Info needed
  206. pro-ject tube box
  207. Some dumb Questions on Heater CCS supply
  208. Aikido loses power?
  209. Quicksilver 8417/12FQ7 mods
  210. Calculations for an AIKIDO
  211. Music Angel Empty shells
  212. Enclosure for tube amp/speaker/reverb unit
  213. Need help troubleshooting preamp trouble
  214. Compactrons on the brain!
  215. XSE vs. GSXE Edcors
  216. output transformer
  217. How to simulate OPT in LTspice?
  218. 311-b
  219. PSU Design help !!!
  220. BDT Preamp build
  221. Russian tubes / capacitors purchasing
  222. Bored with Leak ST20 - ideas?
  223. KT-88 Music Angel problems with sound level
  224. Fusion Hybrid 300B
  225. I'm new here..... :(
  226. DIY/Buy/Kit
  227. Ralph from Atma-sphere will be giving a talk 09/16
  228. Modified USB DAC board, DDDAC with triode buffer
  229. LS50/GU50 Both Grid Drive
  230. Aikido filament question
  231. 6l6 Se.
  232. Feedback requested on 7591 PP design
  233. Blackburn Mullard/Philips video
  234. DIY sheilded B+ cable
  235. Experimenters Tube Sockets
  236. Used freebies precipitate questions
  237. Mains toroid as IT with DC balance?
  238. Tubes for Viva Solista 845 SET amp
  239. SE transformer for PP duty?
  240. Warning: new SS relay question / No flame I
  241. Tube Haunts Thread?
  242. Problem with Maida regulator
  243. 2 stage SE IT coupled amps..
  244. BUF420M Current Sink
  245. Direct from the mains?
  246. PSU capacitors: 30uF film ok instead of 100uF electrolytic?
  247. Annealed silicon core opt`s
  248. Designing a "cheap" highish-power PP amp...
  249. Improvements for the Mikael Abdellah KT88???
  250. DC supply on driver tube hums..

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