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  1. Russian tube power amp repair
  2. Unity coupled circuit amplifier.
  3. info about lectron JH50
  4. G.E. 6CA7/EL34 - any good?
  5. SS Preamp and Tube Poweramp
  6. Values for OTL totem pole (cathode followers)
  7. 12au7 preamp will not work
  8. A Slew of Beginer Tube Questions
  9. calculating b+ voltage drop, decoupling?
  10. Another SET 2A3 in the world
  11. Help needed with Lectron JH 50 Amp
  12. Audio Note M2 regulator schematic
  13. 300b
  14. Three Simple Questions!!
  15. Edcor Transformers
  16. LTP with CCS - IM Distortion
  17. Strange 45 behaviour - help
  18. I have $250 to spend..what amp should I build?
  19. CCs plate load for mu follower 6sn7
  20. Best use of S-265 opt?
  21. what would be a reasonable price to pay for this tube ?
  22. Distortion Neutralizer for Odd Harmonics
  23. 6H13C preamp
  24. Testing tube for noise
  25. Optimal Umbilical Runs and Connections
  26. Little Dot MKIII, faulty driver tube, GE5654 alternative in the UK?
  27. Non-simultaneous Pentode anode/G2 turn-on
  28. ArnoldC's IT coupled 300B amplifier
  29. Ultralinear pse
  30. Using 0D3's for DC regulation in Aikido
  31. ECC40 preamp
  32. Newbie PS questions
  33. parallel EL84 transconductance amp
  34. Quad II Modified by Glenn Croft
  35. Wanted:Power transformers for Welborne DRD 300B amp
  36. Just finished testing my first 832A amp
  37. Russian Transformer cores
  38. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  39. 15E and plate curves
  40. Replacing 6N1P' s with 6922s or 7308s
  41. the "cheapo"
  42. OPT Quality Factors?
  43. 50CA10 pushpull amp
  44. New Hammonds?
  45. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  46. Voltage Gain Confusion!!
  47. is this ok to build???
  48. It's raining 10M45's!
  49. Grid Leak Bias on small signal pentodes.
  50. Equalizing + & - output voltage?
  51. Help with ECF80 spice model
  52. Would a Williamson sound better with a CCS tail in the driver?
  53. low ac voltage question
  54. Aikido/SMPS/SKA SS
  55. values of ground(?) coupling caps in Aikido
  56. Please explain grid stoppers..
  57. Appropriate Iron for 211 Triode SE
  58. Help with Aikido B+ Bias layout
  59. 12v 6BF7 preamp design tested
  60. power supply PLEASE HELP
  61. tube amp
  62. 6AU8A, and assorted questions
  63. PPP OPT clarification
  64. ECC83/12AX7 Tube test query
  65. 0D3 shunt regulator for single ended duty
  66. power supply PLEASE HELP
  67. beefy choke -- please help
  68. 5W EL84 drive EL84 SE
  69. Calculate minimum load current of choke?
  70. Best Sounding Output Tube
  71. Best internal wiring for power
  72. Preamp with DHT
  73. bogen m60 and webster pa
  74. 6p13p schematic
  75. Buzzing Choke - Any Ideas?
  76. Floating A2 Bias
  77. Any SE project for 91db speaker?
  78. Hammond Mains Transformer - Center Tap Split
  79. Fixed Bias v Ultrapath
  80. cathode follower asymmetric slew
  81. 6SN7 with transformer coupling
  82. 6AQ7 - why so cheap???
  83. Grommes 260
  84. heathkit aa-81 mono blocks
  85. feedbackless interstage p-p kt88 amp
  86. Using Horizontal Output Tubes - Power Supply
  87. 6e5c
  88. Mr Liang 845 Sound :(
  89. Test pentode grids without a tester
  90. Info required : GAMMA VALVE AMPS..
  91. 6SN7 plate voltage, current and lifespan
  92. Clarification of floating heater supply
  93. Changed a cap and lost some bass...?
  94. 6P9/6AG7 Triode Amplifier
  95. Chokes Designed for Choke Input PSU's
  96. Power trafo...
  97. Any value to modding a UL OPT to CFBK?
  98. Rogers Cadet III Advice & Opinions Needed
  99. DCG5/5000GS Valve
  100. Morgan Jones on Google Books
  101. CCS for 12B4 linestage
  102. 6j9p
  103. philips hf 303 amp
  104. DIY tube testing Curve Tracer
  105. Amplifier impedance and pot selection
  106. Tube rise time and slew rate
  107. What's your favourite sounding DIY/kit tube amp?
  108. How to convert a 220v Chinese amp to 110v for US use
  109. look for schematic of 12v preamp ???
  110. Bevois Valley and parallel push pull
  111. Amp Wiring Color Code
  112. Xindak 805 monos $4700/pr USD
  113. A new DHT power supply idea
  114. 852 tube
  115. Tube Matcher help needed, ala PassDIY
  116. What's the difference?
  117. Cathode Feedback How-To?
  118. Is Thier Away To Clear Up Distortion???
  119. How much feedback for PP penthode?
  120. To regulate or not to regulate
  121. Anyone used interstage transformers for a 300B?
  122. Hissing Sound in KT88 Amp
  123. Go black or go around?
  124. Triodes that would like a 10K a-a OPT?
  125. Yaqin mc10L
  126. Cycline3 on the 12AU7
  127. How Would You Change This Soildstate Circuit To Tube
  128. Using existing transformer winding to provide and additional supply
  129. Magnetic shields for transformers
  130. James Transformers
  131. Audiopax Model 7
  132. Isis 3030 Monoblocks
  133. From diode to tube rectification in my Aikido
  134. Williamson KT77 Question
  135. mu followers --- current --- please help
  136. need tube schematic
  137. switch snubber for Aikido
  138. Pioneer Tube Schematics
  139. Question about "bloaty" bass with SET and KT88's
  140. Ultron 6v6GT
  141. low power OTLs
  142. 6H30 equivalents
  143. What Would You Do?
  144. k-502/k-12m vs. Model 1 pcl82
  145. Shunting Pot
  146. Suggested replacements for Chinese tubes
  147. What to do with these.....
  148. ECL82 PP "reference" amp
  149. Heater TX proximity
  150. Quick question on the PP-C1 amp
  151. SET "interstage coupler" for First Watt F4
  152. 811A amp Class A2
  153. TVC before Input Transformer?
  154. Point-to-Point, Pointers
  155. Triode recommendation
  156. Schmitt & CCS
  157. Simple DC Heater Supply
  158. Output transformers ? sound quality ?
  159. KT88 Minimum Mounting Distance
  160. LED bias indicator
  161. Standby Switch
  162. chinese tube amp
  163. Broskie OTL
  164. Connecting a single plate to multiple screens?
  165. voltage divider+Aikido
  166. Wiring PSU and Aikido PCB
  167. Mission 300b parallel single ended
  168. learning design but need help
  169. tutorial software
  170. Fisher 500C troubleshooting
  171. triode pentodes
  172. Deriving Secondary Voltages
  173. Here's the W-5M schematics . . .
  174. Question for Heathkit W-5M owners
  175. Classic 16.0
  176. 100 Ohm loudspeaker
  177. Are Srpp's Any Good (please Help)
  178. Blasphemy, I'm sure
  179. Decware ZSLA buffer -- worth cloning?
  180. Pse El84
  181. 6S19P Push-Pull Amplifier
  182. Class B Triodes
  183. Need a serious PP driver stage
  184. laptop->tubes?
  185. cathode follower -- damping factor (HELP please)
  186. Interstage X-former identification
  187. Multi-turn pot?
  188. 6L6G and 6L6GB differences?
  189. 6AK6 low power tube amp finished
  190. 7 pin X
  191. Replacing KT88 with KT90 - Beginner's questions
  192. way to estimate choke current rating?
  193. attn: Montreal, QC, Canada, OPAMPS!
  194. Hiss but no hum...
  195. Cap size for Aikido heater PS?
  196. Heathkit W-5M
  197. NTK " Teds tube mic"
  198. Making a Bias Voltage from B+ tap?
  199. Reg. Heater Circuit
  200. 6AG7 UL Curves
  201. Best SE output transformer for 300b - shootout
  202. Single ended amp from class A push-pull
  203. Yaqin MC-100b schematic diagram
  204. 12/24 volt tubes
  205. Favorite noval hi gain dual triode?
  206. Aikido users- anyone NOT have turn-off thump?
  207. Optimum value for volume control?
  208. VAL MPS mark II preamp gain reduction
  209. It is asked drawing 100 or 200 watts amplifier
  210. Mystery ST-70 Driver Board
  211. First Timer needs help
  212. Help. Bogen m60a
  213. grid-grounded preamp sound
  214. Rectifier switching / choke ringing noise
  215. Single Ended Amp Design -- Help Needed
  216. tube current
  217. Needed : ECF83, can anyone help ??
  218. Problem with a solid state CCS
  219. Looking for low-ish rp single triode
  220. Cleaning beverage out of inside tube amp
  221. Aikido problems!!!
  222. Another Power Supply Question
  223. 2a3 output transformers....
  224. yet another 6em7 amp
  225. zenith amp
  226. 6AG7 Amplifier
  227. Valve Power Supplies?
  228. tube tracer article
  229. PCB design techniques for Tube Amps
  230. Adjectives for tube sound!
  231. Question about Amperex tubes and a preamp
  232. I want to build a preamp for my dad.. thoughts?
  233. Constant Current DC Heater Supply
  234. Which valves for MF CD-T
  235. 6C33C-EB / 6C33C-EV extended life ?
  236. Yamamoto A-08S RCA 45 tube amplifier original schematic
  237. Audiovalve RKV schematic (hybrid headphones amp)
  238. Music Angel EL34 XDSE
  239. Dynaco PAS Preamp Tone Controls
  240. build 805 or 845 se for ~$1000
  241. Built a quick 26 pre yesterday..nice so far,,
  242. An UL preamp idea.
  243. 6BX7 PSpice Model?
  244. using 24G and 3B28 in an od ball amp.......
  245. Tube Line Buffer
  246. Please help me build an amp for my father
  247. Why is my phono amp fatiguing?
  248. Heater current drawn by 8416
  249. want dead counterpoint SA100 SA-100 in good cosmetics
  250. Cathode Followers and Clipping

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