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

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