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  1. Switch-mode PSU for tube heaters?
  2. Hammond Primary Lead color is wrong?
  3. A newbie need helps on the very 1st tube PreAmp
  4. why does 12u7 need certain amount of gain to stop hum 120???
  5. EL34 Pushpull imbalance
  6. Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps
  7. Rozenblit Grounded Grid Cascode Pho Preamp Project
  8. Driving the kt88/6550 in set mode
  9. 6550a question for engineer?
  10. Yl1260
  11. Parts layout diagram for SE amp
  12. Da 42 Triode
  13. Bogen CHB100 Power Supply Question
  14. Testing of russian tubes on B&K 747B
  15. VR150 use
  16. First Valve DIY Project
  17. I'm having grid1 current in EL34
  18. anyone ever built a tube mixer similar to the RCA Living Stereo type??
  19. SEPTOR AT-amp (Anti-Triode) being built
  20. Sophia Electric el34 mods/upgrades
  21. Looking to build....
  22. Bias resistor for source follower driver
  23. PL 519 electrical characteristics
  24. Settings for testing 2C51/5670/396A on B&K Model 600 Dyna Quik
  25. My 6AS7G Fuse Link Checker
  26. Anyone ever had issues with One Electron?
  27. 35% off sale at RadioDaze
  28. phase splitter with Tr ?
  29. Chasing my Simple SE problem...
  30. Zenith stereo, EL84 SE. What to do...
  31. Free TVA-1 rev.3 schematic
  32. Bat Vk-60
  33. Trouble with amp 6V6
  34. 5-125 UL curves anyone?
  35. Mod it or scrap it?
  36. Bogen M330
  37. 1st Tube Amp - What to build?
  38. 6J5 weird phase inverter
  39. swinging CCS PP output stage
  40. Varying 2 tube amp characteristics: SE treble and richness
  41. Jadis Defy 7 Schematic
  42. microphonic sub-miniature tubes?
  43. Transformer distortion (THD)
  44. Options for replacing EF86? E180F?
  45. changing an integrated tube amp to a power amp
  46. Nice tube test supply
  47. Looking for 300B 2.5V heater vendor
  48. Cap to bypass bias battery
  49. 2A3 SE parafeed with PP-transformer
  50. Preamp Voltages
  51. TVA-1 "Export" circuit/schematic?
  52. 12ax7 series is this correct??
  53. Yet Another Phono Stage Suggestions Thread
  54. 15% off sale at Soniccraft
  55. Bias Mode Switching Question (guitar Amp)
  56. Sizing Coupling Capacitors
  57. budget xformer for 829B pentode mode PP (class AB) ?
  58. preamp layout suggestions please
  59. Capacitors and hype!
  60. Transofrmer secondaries
  61. please help 407a
  62. OPT Grounding / Crosstalk
  63. SE With shared Rk in output
  64. Unsolved problem EL34/12AT7/5AR4
  65. Radford STA25 service UK
  66. My tube DIY Web page, translate into English
  67. suggestion about AIKIDO PRE
  68. jackson tube tester 648s manuals
  69. Hashimoto A-105 - 6S4A
  70. Looking For Counterpoint SA2000 Schematic
  71. Where do you put the standby switch
  72. Simple SE Schematic
  73. Operating point for 6GK5
  74. Audio Research St-70-c3
  75. Help identifying tube amp
  76. Ed8000
  77. power suply for Pre & Phono Use tube 6BM8
  78. ESLDD with "anti-triode"
  79. Schematics border patrol psu
  80. Tubelab PCBs for an 845 - a good idea?
  81. Bias supply idea
  82. dynaco st 70 c3
  83. KT88 and the 6550
  84. crate vintage club problem
  85. GM70/GM70 parafeed SET?
  86. Genalex repro KT88s
  87. Grid - Screen Alignment (X-Rays)
  88. tube matching
  89. DC heaters for 5687 in Aikido?
  90. Connection Jensen 4-pole
  91. Measuring Output Power
  92. Modelling stereo PSU in PSUD ...
  93. Speaker matching transformer.
  94. Sowter's Radford transformer
  95. Cathode bias 6LU8 UL/Triode
  96. Cathode bias 6LU8 UL/Triode
  97. Sourcing ASC 100uf X386S capacitor
  98. Looking for a linear triode for lowish B+ CF (6N6P?)
  99. need spice model 5814a
  100. 420T or 10E/33B ?????????
  101. Decca DMI-73 and EL-84 weirdness
  102. DIY JTM 45/100 Style Guitar Amp
  103. Pentode guys: important to decouple g2 supply between stages?
  104. Ccs
  105. The Friday Chuckle
  106. Need help deciding what to build
  107. Why does red plate spell early death?
  108. Odd transformer with 6X4 tube mounted on top.. smoking more than my uncle Frank
  109. fisher 400 tweaking issues
  110. GM70 an 813 strapped in SE-UL - circuits?
  111. need help on transformer secondaries connection
  112. Partridge audio output transformer value
  113. Low mu Preamp Triodes as Power Output Tubes
  114. 300B Transformer temperature
  115. Standby Switch Problems
  116. Worth repairing?
  117. Measuring current distortion
  118. GM70 sockets?
  119. high AC mains problem
  120. 250 V PSU help
  121. EL34 UL Curves
  122. datasheet for ge 5star and rca command 5814a?
  123. PS choke voltage/current quetsion
  124. push pull power amp design question (a lot of actually :) )
  125. Knight Amplifier Repair Question
  126. Grant G100AS circuit diagram?
  127. Hashimoto A-105 - summary so far
  128. Related Audio Worlds largest
  129. Why do valves go microphonic?
  130. Allen Wright Superreg manual
  131. Need help on resistor values for 5687 aikido kit
  132. Pioneer SM83 PP amps
  133. Techtube valves/tubes
  134. Datasheet for Russian 6p3s-e
  135. Continually Blowing Fuses
  136. I am done with AES -- a short rant.
  137. CineMag CMMI-15/15B
  138. In market for a Capacitor meter - for a tube project!
  139. What amp(s) would you buy under $1500
  140. Etf 2008
  141. All FET Aikido
  142. what 12au7 have different tone ??vintage and modern
  143. Can 3.5W 2A3 amp drive proAc 1SC?
  144. British seven pin sockets
  145. Pentodes, triode mode and grid screen dissipation 101
  146. Yakov Aronov amps
  147. Suitable tube pre-amp for Phase Linear 400?
  148. Goldpoint value?
  149. TubelabSE 300B power transformer ?
  150. 316A socket
  151. Hashimoto A105 - some results (ECC99)
  152. Some uses for old transformers
  153. Power Supply Question
  154. PY82 as rectifier
  155. Jackson 637 Tube tester Info needed
  156. pro-ject tube box
  157. Some dumb Questions on Heater CCS supply
  158. Aikido loses power?
  159. Quicksilver 8417/12FQ7 mods
  160. Calculations for an AIKIDO
  161. Music Angel Empty shells
  162. Enclosure for tube amp/speaker/reverb unit
  163. Need help troubleshooting preamp trouble
  164. Compactrons on the brain!
  165. XSE vs. GSXE Edcors
  166. output transformer
  167. How to simulate OPT in LTspice?
  168. 311-b
  169. PSU Design help !!!
  170. BDT Preamp build
  171. Russian tubes / capacitors purchasing
  172. Bored with Leak ST20 - ideas?
  173. KT-88 Music Angel problems with sound level
  174. Fusion Hybrid 300B
  175. I'm new here..... :(
  176. DIY/Buy/Kit
  177. Ralph from Atma-sphere will be giving a talk 09/16
  178. Modified USB DAC board, DDDAC with triode buffer
  179. LS50/GU50 Both Grid Drive
  180. Aikido filament question
  181. 6l6 Se.
  182. Feedback requested on 7591 PP design
  183. Blackburn Mullard/Philips video
  184. DIY sheilded B+ cable
  185. Experimenters Tube Sockets
  186. Used freebies precipitate questions
  187. Mains toroid as IT with DC balance?
  188. Tubes for Viva Solista 845 SET amp
  189. SE transformer for PP duty?
  190. Warning: new SS relay question / No flame I
  191. Tube Haunts Thread?
  192. Problem with Maida regulator
  193. 2 stage SE IT coupled amps..
  194. BUF420M Current Sink
  195. Direct from the mains?
  196. PSU capacitors: 30uF film ok instead of 100uF electrolytic?
  197. Annealed silicon core opt`s
  198. Designing a "cheap" highish-power PP amp...
  199. Improvements for the Mikael Abdellah KT88???
  200. DC supply on driver tube hums..
  201. Sun Audio SV-2A3
  202. Mullard Blackburn Tube Factory Tour Video
  203. SE amp: Please suggest a better operating point
  204. Paralleling Outputs or Bi-amp
  205. triple triode common cathode - only want to use 2 triodes
  206. Luxman 3045 Mono Block Tube Amp
  207. Eye tube for balancing multi amp system
  208. 12ax7 preamp.
  209. External PSU for Quad 22 pre-amplifier
  210. Keep Blowing Fuses
  211. learning tube rectified psu
  212. 17JB6... guitar amp?
  213. Series of Diode on HT Plate
  214. Quad II power amps......power output transformers!!!
  215. Mullard (factory) making tubes again
  216. CFB and A2 operation
  217. DIY triode
  218. Interesting symmetrical amp from 1955 magazine
  219. 6N23P, 6S19P anybody knows?
  220. Worlds smallest HiFi valve amp
  221. A DIY Interruptus Moment
  222. Noisy EL84 amp needs new front end
  223. Loosening up magnetic "stiction"
  224. The Return Of Blackburn Mullards?
  225. Can I use different value cap?
  226. tubelab SimpleSe power transformer connection question
  227. need output transformer for Fisher
  228. help for E182CC linestage/driver
  229. User Beware: A Report On Jj Tubes
  230. Depletion mode mosfets for 2mA CCS ?
  231. New tube stash question
  232. Stepped attenuator recommendation...
  233. Pros and cons of Cascoded front ends
  234. EF86 as a volume pot, line pre 2008
  235. RCA voltage regulator
  236. Input voltage attenuation
  237. Valve Buffer amp
  238. 6y6ga
  239. Filmosound L-1 6V6 Volume pot issue
  240. 3C24 in a SE output stage - output transformer impedance recommendation !!!
  241. Another 3f4 spice triode model: 5718 submini triode
  242. hp-8903B advice??
  243. need info on how to convert my bogen k10 for guitars use
  244. Differential Amplfiers - current sources under/over the triodes
  245. Impedance rate VS impedance stability
  246. Anyone running Mikael's SE KT88 in Pentode?
  247. what double triode is less microphonic ?
  248. Need advice on proper use of anode chokes.
  249. Grounding problem?
  250. Current regulation for filament of say a 300B

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