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  1. Minimum Zener Current with Pass Device
  2. Favorite easy 6V6 push-pull circuit?
  3. Tubecad soft-clipping circuit
  4. broskie voltage regulator
  5. E88CC dissipation in Aikido
  6. Magnavox 6BQ5/EL84 and Mr. Gabe
  7. Aikido hum has me stumped !!!!
  8. 5842 and 5842 WA for 300B
  9. Basic tube combination question.
  10. Resistive ps voltage follower
  11. First time DIY tube
  12. Need help with hum and faint left channel on my S5 Electronics kit
  13. grid impedence of paralleled tubes in push pull
  14. rectification
  15. 6AU6 Varieties
  16. EMI tubes (British made)
  17. valve wear symptoms?
  18. Standby switch, snap, crackle, pop?
  19. Aikido PSU questions (Bas Boards)
  20. one tube amps
  21. Intermittant Clicking
  22. How to solve noise/storing/on car Tube Amp ? any Schematic ?
  23. Series MOSFET regulator better with just voltage ref on gate or with error amp?
  24. Tube spice models
  25. Audible Illusions Modulus faulty?
  26. Ei Tubes..
  27. more output transformer questions
  28. 6C33 design comments?
  29. Current production EL34
  30. Impedance matching
  31. question about multiple input transformer in same tube mic pre.
  32. One tube preamp
  33. Help 6G-E12A pinout??
  34. DIY Jadis JA 30 power amp PCB
  35. output tube options
  36. wanted: accurate 257 tube tester manual
  37. Developing a "universal" tube power supply PCB
  38. Looking for a Cover....
  39. EL34 Sound
  40. Pinout ECC83 to ECC808
  41. How to convert S5 K-12g kit to dual mono?
  42. EL84 + EF86
  43. Tube amps, power and speaker impedance
  44. How to figure output Z of SRPP?
  45. Rose RV23 preamp
  46. Wanted RIAA stage with 6SN7
  47. Help with PSU Design
  48. Tetrode output stage
  49. New amplifier project -my layout
  50. jadis ja 30
  51. Aikido Attenuator kit question
  52. Weird crackling sound without B+ applied
  53. More Aikido questions...........
  54. 6C41C in OTL?
  55. Looking for Voss-Ellis article
  56. 807 E-Linear
  57. ECC86 model
  58. Tube ID & Code Help Needed
  59. PS Decoupling question
  60. Need help in trouble-shooting my AES Sixpacs amp
  61. Space between power tubes
  62. Schematic please? SRPP with current source cathode follower
  63. Series connecting output Transformers.
  64. 6C45-Pi battery RIAA/Pre sugestions?
  65. Good News For EI Tube Fans
  66. My 300B project...
  67. building Single Ended amps
  68. Higher power amps using 807's or 1625's
  69. Project using Eico ST 70 Iron?
  70. M-1 amplifier kit - full documentation in public domain now
  71. Sus tubes ?
  72. Adjusting BIAS
  73. "Shrine" SE Amp using 6AH6 and 1625
  74. MFA Lumi - possible to "un-darken" the sound signature?
  75. Output transformers resistance
  76. Aikido heaters
  77. Return to Aikido Hum issues
  78. Looking for Schematic 6550 tube amp triode mode more than 35Watt ?
  79. Compare the sound of 6550 amp to a 6L6 amp
  80. Biasing a valve amp
  81. Scoundrel days
  82. Counterpoint SA100 one channel doesn´t work
  83. Hepl me circuit 6h30
  84. 6LR8 Amp Preliminary Questions
  85. Another 6L6 schematic
  86. 6S19P Amplifier
  87. An idea for a PL84 amp with toroidal interstage.
  88. 417A-300B Plate Choke or Interstage Coupled?
  89. Identifying an unknown tube
  90. Looking for EL34 PP Schematic Amp ? at least 35Watt
  91. Help diagnosing noise
  92. st70 blowout
  93. Gu81-m
  94. 6c4 pre-amp circuit
  95. 6SN7 6.3 V heater supply
  96. 2C26 &E1148's
  97. First ECL82 amp probs.
  98. JE Labs ST2A3DX
  99. Punchy 813 Poweramp
  100. Hum in AE K502 or K12m
  101. SE 6SN7 amp....
  102. Audio Innovations 800C schematic or even better service manual?
  103. Music angel amps
  104. Low gain 9-pin tubes for Aikido?
  105. JADIS ORCHESTRA IN PCB (original is hardwire)
  106. Blown Valve in ARC VT50 - help
  107. LAMM ML3 *Signature*
  108. Diode for DC heater
  109. Calculating shunt reg source impedance
  110. Marant 7c preamp diyzone project
  111. PSU Caps for an EL34 SET
  112. high gain 12ax7 preamp from scratch?
  113. IXYS 10M45 chip CCS
  114. Octal Aikido? What tubes?
  115. Tube power supply questions
  116. 6J5 input swing
  117. Checking spice model plate curve accuracy
  118. How many Ohm for triode strapping?
  119. Power supply for Heathkit WA-P2 pre-amplifier
  120. Bogen MX-60a tune-up
  121. dynaco st35 clone problem
  122. Edcor OPT's
  123. ECC40 cascode
  124. Air Vane RIAA Tuning Question
  125. Tube Noob! need help with tubes lots of tubes
  126. bias adjust installation, bogen mo-100a mo 100a quicksilver
  127. 6EM7 Amp
  128. 40mu tube preamp suggestions?
  129. Safe installation of interstage
  130. I've built some amps, need suggestions for a DIY preamp or line stage
  131. CRD diode CCS any good <1mA?
  132. Help fixing a Border Patrol Power Amp
  133. TAD-60 schematics / mods
  134. Selling tube amps
  135. Drd 300b Pse
  136. Hammond Transformer Winding Resistance -- 369GX
  137. The meaning of VA in a TX
  138. Ucl85
  139. Best way to measure cathode follower current
  140. Neuman U47
  141. OT: Season's greetings to all
  142. Anyone have experience with a 6AN4...?
  143. L-pad instead of H-pad??
  144. valve regulated psu
  145. basie+aikido preamp
  146. Input Switch?
  147. Help me please
  148. Congratulations, you just built a $2K antenna !
  149. Sonic Frontiers Line 2, please help?
  150. Sovtec 12AX7
  151. removing AC Hum on Aikido????
  152. Stereo Build - Mikaels KT88
  153. 6V6GT scematic, any good, comments?
  154. 807 vs 811A output: Sonic preference?
  155. Cheap PP OPTs
  156. Mc C-22 Ce
  157. Transformer Coupled Linestage
  158. 6CY7 Variants
  159. EZ81 rectifier noise
  160. Any good Output Transformers from China?
  161. Aikido - alive and kicking butt (not mine!)
  162. Dead Copland CTA-501
  163. Is the E86L the industrial sister of the EL86?
  164. Hammond 1630SEA, worth trying?
  165. Using Gas Regulators
  166. Cheap and Chinese KT88 SE amp
  167. Cary v12 -> V12r Conversion Questions
  168. 15 watts loud enough?
  169. ST70 hybrid finally up and running !!
  170. The Making of a Triode
  171. Spice models
  172. HV SS bench top power supply, advice needed
  173. A new Aikido is born - and kicking butt!
  174. Preamp - DIY vs Audio Research (or similar)
  175. Stromberg-Carlson 433 : Add standby or not?
  176. All-tube digital clock
  177. audible illusions dual mono preamp
  178. Siemens/Klangfim 6.4 mono question..?
  179. James 6123 OPT Wiring Help
  180. Next Bogen Conversion soon - need phase splitter advice
  181. A basic question regarding transformer laminations
  182. TOO many volts ????!!!!
  183. Dynaco Mark VI
  184. Frankenstein
  185. Unity buffer from 7-pin triode?
  186. Heathkit WA-P2 preamp
  187. Internal shield on 6922 dual triode
  188. 6cl3, 6cj3, 6dw4, 6ck3, 6ay3
  189. 418a
  190. Is it worth biasing with a distortion analyzer ???
  191. Usefulness of 6X8 tube?
  192. reducing hum in SET amps
  193. dynamic loadline
  194. Designing Transformer-Coupled Circuits...
  195. Tube-amp power issues
  196. SCA-35 Dynaco
  197. Q on voltage swing
  198. Buzz on preamp
  199. Help- I'm new!
  200. tube phono stage
  201. Schematic for Gm70!Where to find it!
  202. getting the specs on a transformer
  203. Nixie bargraph as a audio VU-meter
  204. Unique or odd uses for the diyAudio CCS boards
  205. Balanced tube preamp for class D power amps.
  206. 117v heater tube 117n7
  207. bypassing the plate-load
  208. Is this OK for a heater supply?
  209. which gauge wire for PSU????
  210. Citation II OPT?
  211. A new project, Blue Velvet Pre Amp is ready and rocks ! ! !
  212. Suggested budget pwr sply topologies?
  213. Battery for Cathode Voltage?
  214. Calbest help
  215. PO'ed at RFI
  216. 12B4-A Linestage
  217. Relay Attenuator for tube amp
  218. Aikido and K-1000 headphones?
  219. post poweramp power attenuator
  220. preamp tube for metal
  221. Favorite Output Tube?
  222. CCS Grid Bias
  223. Ring of two CCS for differential triode amp - stability?
  224. Unstacking a transformer...
  225. interconnect cable 15' long
  226. Citation II oscillating, Uh oh
  227. Regulated PowerSupply for Frank's 6SN7 Preamp
  228. Regulating G2 in Pentode Operation
  229. WE310A, a confusing issue
  230. Naming conventions
  231. Newbie: Powering up Tube Amp
  232. preference between 5842 and 6c45pi
  233. Help! first tube pre-amp with 12ax7
  234. S11E12 / 12E1: best operating point ?
  235. 6j5 trasformer coupled driver/splitter
  236. A new audio tube
  237. heretical unity gain OUTPUT stage...
  238. LL1630 Pre amp
  239. New Jensen caps has no bass in..Simple EL84PP
  240. EIMAC toobz : What sort of PSU ?
  241. Filament Transformer for 26 DHT
  242. Valve Pre for Chip Amp
  243. To hell with pride. I need help w. Grounded grid Pre-amp
  244. signal wiring / chassis grounding - Aikido
  245. Power rating for triode/pentode resistors
  246. Unity coupled power amp
  247. 6BX7 Outputs
  248. DIY Preamp for use with Dynaco ST70
  249. +B Power Supply Basics
  250. Tubes and their sweet spots.

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