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  1. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  2. 15E and plate curves
  3. Replacing 6N1P' s with 6922s or 7308s
  4. the "cheapo"
  5. OPT Quality Factors?
  6. 50CA10 pushpull amp
  7. New Hammonds?
  8. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  9. Voltage Gain Confusion!!
  10. is this ok to build???
  11. PSUD2 help needed
  12. It's raining 10M45's!
  13. Grid Leak Bias on small signal pentodes.
  14. Equalizing + & - output voltage?
  15. Help with ECF80 spice model
  16. Would a Williamson sound better with a CCS tail in the driver?
  17. low ac voltage question
  18. Aikido/SMPS/SKA SS
  19. values of ground(?) coupling caps in Aikido
  20. Please explain grid stoppers..
  21. Psud2 Help
  22. Appropriate Iron for 211 Triode SE
  23. does anyone know the resistance of a hammond 300bx transformer
  24. Help with Aikido B+ Bias layout
  25. 12v 6BF7 preamp design tested
  26. power supply PLEASE HELP
  27. power supply PLEASE HELP
  28. power supply PLEASE HELP
  29. tube amp
  30. 6AU8A, and assorted questions
  31. PPP OPT clarification
  32. ECC83/12AX7 Tube test query
  33. 0D3 shunt regulator for single ended duty
  34. where to buy parts (transformers and chokes)
  35. beefy choke -- please help
  36. 5W EL84 drive EL84 SE
  37. Calculate minimum load current of choke?
  38. Best Sounding Output Tube
  39. Best internal wiring for power
  40. Preamp with DHT
  41. bogen m60 and webster pa
  42. 6p13p schematic
  43. Buzzing Choke - Any Ideas?
  44. Floating A2 Bias
  45. Any SE project for 91db speaker?
  46. Hammond Mains Transformer - Center Tap Split
  47. TINA-TI Tube Simulation
  48. Fixed Bias v Ultrapath
  49. Traynor YBA200 6550 help!
  50. cathode follower asymmetric slew
  51. 6SN7 with transformer coupling
  52. 6AQ7 - why so cheap???
  53. Grommes 260
  54. heathkit aa-81 mono blocks
  55. feedbackless interstage p-p kt88 amp
  56. Using Horizontal Output Tubes - Power Supply
  57. 6e5c
  58. Mr Liang 845 Sound :(
  59. Test pentode grids without a tester
  60. Info required : GAMMA VALVE AMPS..
  61. 6SN7 plate voltage, current and lifespan
  62. Clarification of floating heater supply
  63. Changed a cap and lost some bass...?
  64. 6P9/6AG7 Triode Amplifier
  65. Chokes Designed for Choke Input PSU's
  66. Power trafo...
  67. Any value to modding a UL OPT to CFBK?
  68. One guitar, multiple amps at once?
  69. Rogers Cadet III Advice & Opinions Needed
  70. DCG5/5000GS Valve
  71. Morgan Jones on Google Books
  72. CCS for 12B4 linestage
  73. 6j9p
  74. philips hf 303 amp
  75. DIY tube testing Curve Tracer
  76. Amplifier impedance and pot selection
  77. Tube rise time and slew rate
  78. What's your favourite sounding DIY/kit tube amp?
  79. How to convert a 220v Chinese amp to 110v for US use
  80. look for schematic of 12v preamp ???
  81. Bevois Valley and parallel push pull
  82. Amp Wiring Color Code
  83. Xindak 805 monos $4700/pr USD
  84. A new DHT power supply idea
  85. 852 tube
  86. Tube Matcher help needed, ala PassDIY
  87. What's the difference?
  88. Cathode Feedback How-To?
  89. Is Thier Away To Clear Up Distortion???
  90. How much feedback for PP penthode?
  91. To regulate or not to regulate
  92. Anyone used interstage transformers for a 300B?
  93. Hissing Sound in KT88 Amp
  94. Go black or go around?
  95. Triodes that would like a 10K a-a OPT?
  96. Yaqin mc10L
  97. Cycline3 on the 12AU7
  98. How Would You Change This Soildstate Circuit To Tube
  99. Using existing transformer winding to provide and additional supply
  100. Magnetic shields for transformers
  101. First DIY job: Dual Tube Recording Preamp
  102. James Transformers
  103. Audiopax Model 7
  104. Isis 3030 Monoblocks
  105. From diode to tube rectification in my Aikido
  106. Williamson KT77 Question
  107. mu followers --- current --- please help
  108. need tube schematic
  109. switch snubber for Aikido
  110. Pioneer Tube Schematics
  111. Question about "bloaty" bass with SET and KT88's
  112. Ultron 6v6GT
  113. low power OTLs
  114. 6H30 equivalents
  115. What Would You Do?
  116. k-502/k-12m vs. Model 1 pcl82
  117. Shunting Pot
  118. Suggested replacements for Chinese tubes
  119. What to do with these.....
  120. ECL82 PP "reference" amp
  121. Heater TX proximity
  122. Quick question on the PP-C1 amp
  123. SET "interstage coupler" for First Watt F4
  124. 811A amp Class A2
  125. TVC before Input Transformer?
  126. Point-to-Point, Pointers
  127. Triode recommendation
  128. Schmitt & CCS
  129. Simple DC Heater Supply
  130. Output transformers ? sound quality ?
  131. KT88 Minimum Mounting Distance
  132. LED bias indicator
  133. Standby Switch
  134. chinese tube amp
  135. Broskie OTL
  136. Connecting a single plate to multiple screens?
  137. voltage divider+Aikido
  138. Wiring PSU and Aikido PCB
  139. Mission 300b parallel single ended
  140. Vietnam tube amplifier festival
  141. learning design but need help
  142. tutorial software
  143. Fisher 500C troubleshooting
  144. triode pentodes
  145. Deriving Secondary Voltages
  146. Here's the W-5M schematics . . .
  147. Question for Heathkit W-5M owners
  148. Classic 16.0
  149. 100 Ohm loudspeaker
  150. Are Srpp's Any Good (please Help)
  151. Blasphemy, I'm sure
  152. Decware ZSLA buffer -- worth cloning?
  153. Pse El84
  154. 6S19P Push-Pull Amplifier
  155. Class B Triodes
  156. Need a serious PP driver stage
  157. laptop->tubes?
  158. cathode follower -- damping factor (HELP please)
  159. Interstage X-former identification
  160. Multi-turn pot?
  161. 6L6G and 6L6GB differences?
  162. 6AK6 low power tube amp finished
  163. 7 pin X
  164. Replacing KT88 with KT90 - Beginner's questions
  165. way to estimate choke current rating?
  166. attn: Montreal, QC, Canada, OPAMPS!
  167. Hiss but no hum...
  168. Cap size for Aikido heater PS?
  169. Heathkit W-5M
  170. NTK " Teds tube mic"
  171. Making a Bias Voltage from B+ tape?
  172. Reg. Heater Circuit
  173. 6AG7 UL Curves
  174. Best SE output transformer for 300b - shootout
  175. Single ended amp from class A push-pull
  176. Yaqin MC-100b schematic diagram
  177. 12/24 volt tubes
  178. Favorite noval hi gain dual triode?
  179. AVO MKIII Tester Operation?
  180. Aikido users- anyone NOT have turn-off thump?
  181. Optimum value for volume control?
  182. VAL MPS mark II preamp gain reduction
  183. It is asked drawing 100 or 200 watts amplifier
  184. Mystery ST-70 Driver Board
  185. First Timer needs help
  186. Help. Bogen m60a
  187. grid-grounded preamp sound
  188. Rectifier switching / choke ringing noise
  189. Single Ended Amp Design -- Help Needed
  190. tube current
  191. Needed : ECF83, can anyone help ??
  192. Problem with a solid state CCS
  193. Looking for low-ish rp single triode
  194. Cleaning beverage out of inside tube amp
  195. Aikido problems!!!
  196. Another Power Supply Question
  197. 2a3 output transformers....
  198. yet another 6em7 amp
  199. zenith amp
  200. 6AG7 Amplifier
  201. Valve Power Supplies?
  202. tube tracer article
  203. PCB design techniques for Tube Amps
  204. Adjectives for tube sound!
  205. Question about Amperex tubes and a preamp
  206. I want to build a preamp for my dad.. thoughts?
  207. Constant Current DC Heater Supply
  208. Weekend Fun with Tubes - Guitar Preamp
  209. Which valves for MF CD-T
  210. 6C33C-EB / 6C33C-EV extended life ?
  211. Yamamoto A-08S RCA 45 tube amplifier original schematic
  212. Audiovalve RKV schematic (hybrid headphones amp)
  213. Music Angel EL34 XDSE
  214. Dynaco PAS Preamp Tone Controls
  215. build 805 or 845 se for ~$1000
  216. Built a quick 26 pre yesterday..nice so far,,
  217. An UL preamp idea.
  218. 6BX7 PSpice Model?
  219. using 24G and 3B28 in an od ball amp.......
  220. Tube Line Buffer
  221. Please help me build an amp for my father
  222. Why is my phono amp fatiguing?
  223. Heater current drawn by 8416
  224. want dead counterpoint SA100 SA-100 in good cosmetics
  225. Cathode Followers and Clipping
  226. transformer secondary connections
  227. imp amp
  228. Information 6DJ8
  229. Smoothing Cap = Noise Source?
  230. peavey ultra 60 footswitch wiring diagram
  231. 6S19P budget SE.
  232. adding reverb to a PA head
  233. My 2 new latest Dynaco ST-70's
  234. help with KT88 / mikaels SE amp
  235. twin reverb 100 watt
  236. adding LEDs to amp head
  237. What Is Line Level????
  238. chokes, caps, and long distance relationships
  239. First foray into tubes!!
  240. Simple Hi-end 845 amplifier
  241. increased choke inductance - recommended?
  242. HELP PLEASE - with preamp design
  243. Alternative to James OPTs
  244. DIY preamp tube: Audio Research Reference 3???
  245. Crowhurst's Twin Coupled Amplifier
  246. 6lw6 tv sweep tube bias?
  247. 24V aikido build!
  248. magnavox tube radio
  249. New S5 L series kits
  250. Anyone has experience with Stranwood

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