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  1. ECC40 preamp
  2. Newbie PS questions
  3. Preliminary 12AX7 guitar preamp
  4. Another cap replacement: uF changes..
  5. parallel EL84 transconductance amp
  6. Quad II Modified by Glenn Croft
  7. Wanted:Power transformers for Welborne DRD 300B amp
  8. Just finished testing my first 832A amp
  9. Russian Transformer cores
  10. Suitable diagram so I can use 4x Telsa RD 200B and 8x Tungsram RG 250/3000
  11. 15E and plate curves
  12. Replacing 6N1P' s with 6922s or 7308s
  13. the "cheapo"
  14. OPT Quality Factors?
  15. 50CA10 pushpull amp
  16. New Hammonds?
  17. Welborne Terraplane Amp-PS10 HV Regulated PS Problems
  18. Voltage Gain Confusion!!
  19. is this ok to build???
  20. PSUD2 help needed
  21. It's raining 10M45's!
  22. Grid Leak Bias on small signal pentodes.
  23. Equalizing + & - output voltage?
  24. Help with ECF80 spice model
  25. Would a Williamson sound better with a CCS tail in the driver?
  26. low ac voltage question
  27. Aikido/SMPS/SKA SS
  28. values of ground(?) coupling caps in Aikido
  29. Please explain grid stoppers..
  30. Psud2 Help
  31. Appropriate Iron for 211 Triode SE
  32. does anyone know the resistance of a hammond 300bx transformer
  33. Help with Aikido B+ Bias layout
  34. 12v 6BF7 preamp design tested
  35. power supply PLEASE HELP
  36. power supply PLEASE HELP
  37. power supply PLEASE HELP
  38. tube amp
  39. 6AU8A, and assorted questions
  40. PPP OPT clarification
  41. ECC83/12AX7 Tube test query
  42. 0D3 shunt regulator for single ended duty
  43. where to buy parts (transformers and chokes)
  44. beefy choke -- please help
  45. 5W EL84 drive EL84 SE
  46. Calculate minimum load current of choke?
  47. Best Sounding Output Tube
  48. Best internal wiring for power
  49. Preamp with DHT
  50. bogen m60 and webster pa
  51. 6p13p schematic
  52. Buzzing Choke - Any Ideas?
  53. Floating A2 Bias
  54. Any SE project for 91db speaker?
  55. Hammond Mains Transformer - Center Tap Split
  56. TINA-TI Tube Simulation
  57. Fixed Bias v Ultrapath
  58. Traynor YBA200 6550 help!
  59. cathode follower asymmetric slew
  60. 6SN7 with transformer coupling
  61. 6AQ7 - why so cheap???
  62. Grommes 260
  63. heathkit aa-81 mono blocks
  64. feedbackless interstage p-p kt88 amp
  65. Using Horizontal Output Tubes - Power Supply
  66. 6e5c
  67. Mr Liang 845 Sound :(
  68. Test pentode grids without a tester
  69. Info required : GAMMA VALVE AMPS..
  70. 6SN7 plate voltage, current and lifespan
  71. Clarification of floating heater supply
  72. Changed a cap and lost some bass...?
  73. 6P9/6AG7 Triode Amplifier
  74. Chokes Designed for Choke Input PSU's
  75. Power trafo...
  76. Any value to modding a UL OPT to CFBK?
  77. One guitar, multiple amps at once?
  78. Rogers Cadet III Advice & Opinions Needed
  79. DCG5/5000GS Valve
  80. Morgan Jones on Google Books
  81. CCS for 12B4 linestage
  82. 6j9p
  83. philips hf 303 amp
  84. DIY tube testing Curve Tracer
  85. Amplifier impedance and pot selection
  86. Tube rise time and slew rate
  87. What's your favourite sounding DIY/kit tube amp?
  88. How to convert a 220v Chinese amp to 110v for US use
  89. look for schematic of 12v preamp ???
  90. Bevois Valley and parallel push pull
  91. Amp Wiring Color Code
  92. Xindak 805 monos $4700/pr USD
  93. A new DHT power supply idea
  94. 852 tube
  95. Tube Matcher help needed, ala PassDIY
  96. What's the difference?
  97. Cathode Feedback How-To?
  98. Is Thier Away To Clear Up Distortion???
  99. How much feedback for PP penthode?
  100. To regulate or not to regulate
  101. Anyone used interstage transformers for a 300B?
  102. Hissing Sound in KT88 Amp
  103. Go black or go around?
  104. Triodes that would like a 10K a-a OPT?
  105. Yaqin mc10L
  106. Cycline3 on the 12AU7
  107. How Would You Change This Soildstate Circuit To Tube
  108. Using existing transformer winding to provide and additional supply
  109. Magnetic shields for transformers
  110. First DIY job: Dual Tube Recording Preamp
  111. James Transformers
  112. Audiopax Model 7
  113. Isis 3030 Monoblocks
  114. From diode to tube rectification in my Aikido
  115. Williamson KT77 Question
  116. mu followers --- current --- please help
  117. need tube schematic
  118. switch snubber for Aikido
  119. Pioneer Tube Schematics
  120. Question about "bloaty" bass with SET and KT88's
  121. Ultron 6v6GT
  122. low power OTLs
  123. 6H30 equivalents
  124. What Would You Do?
  125. k-502/k-12m vs. Model 1 pcl82
  126. Shunting Pot
  127. Suggested replacements for Chinese tubes
  128. What to do with these.....
  129. ECL82 PP "reference" amp
  130. Heater TX proximity
  131. Quick question on the PP-C1 amp
  132. SET "interstage coupler" for First Watt F4
  133. 811A amp Class A2
  134. TVC before Input Transformer?
  135. Point-to-Point, Pointers
  136. Triode recommendation
  137. Schmitt & CCS
  138. Simple DC Heater Supply
  139. Output transformers ? sound quality ?
  140. KT88 Minimum Mounting Distance
  141. LED bias indicator
  142. Standby Switch
  143. chinese tube amp
  144. Broskie OTL
  145. Connecting a single plate to multiple screens?
  146. voltage divider+Aikido
  147. Wiring PSU and Aikido PCB
  148. Mission 300b parallel single ended
  149. Vietnam tube amplifier festival
  150. learning design but need help
  151. tutorial software
  152. Fisher 500C troubleshooting
  153. triode pentodes
  154. Deriving Secondary Voltages
  155. Here's the W-5M schematics . . .
  156. Question for Heathkit W-5M owners
  157. Classic 16.0
  158. 100 Ohm loudspeaker
  159. Are Srpp's Any Good (please Help)
  160. Blasphemy, I'm sure
  161. Decware ZSLA buffer -- worth cloning?
  162. Pse El84
  163. 6S19P Push-Pull Amplifier
  164. Class B Triodes
  165. Need a serious PP driver stage
  166. laptop->tubes?
  167. cathode follower -- damping factor (HELP please)
  168. Interstage X-former identification
  169. Multi-turn pot?
  170. 6L6G and 6L6GB differences?
  171. 6AK6 low power tube amp finished
  172. 7 pin X
  173. Replacing KT88 with KT90 - Beginner's questions
  174. way to estimate choke current rating?
  175. attn: Montreal, QC, Canada, OPAMPS!
  176. Hiss but no hum...
  177. Cap size for Aikido heater PS?
  178. Heathkit W-5M
  179. NTK " Teds tube mic"
  180. Making a Bias Voltage from B+ tape?
  181. Reg. Heater Circuit
  182. 6AG7 UL Curves
  183. Best SE output transformer for 300b - shootout
  184. Single ended amp from class A push-pull
  185. Yaqin MC-100b schematic diagram
  186. 12/24 volt tubes
  187. Favorite noval hi gain dual triode?
  188. AVO MKIII Tester Operation?
  189. Aikido users- anyone NOT have turn-off thump?
  190. Optimum value for volume control?
  191. VAL MPS mark II preamp gain reduction
  192. It is asked drawing 100 or 200 watts amplifier
  193. Mystery ST-70 Driver Board
  194. First Timer needs help
  195. Help. Bogen m60a
  196. grid-grounded preamp sound
  197. Rectifier switching / choke ringing noise
  198. Single Ended Amp Design -- Help Needed
  199. tube current
  200. Needed : ECF83, can anyone help ??
  201. Problem with a solid state CCS
  202. Looking for low-ish rp single triode
  203. Cleaning beverage out of inside tube amp
  204. Aikido problems!!!
  205. Another Power Supply Question
  206. 2a3 output transformers....
  207. yet another 6em7 amp
  208. zenith amp
  209. 6AG7 Amplifier
  210. Valve Power Supplies?
  211. tube tracer article
  212. PCB design techniques for Tube Amps
  213. Adjectives for tube sound!
  214. Question about Amperex tubes and a preamp
  215. I want to build a preamp for my dad.. thoughts?
  216. Constant Current DC Heater Supply
  217. Weekend Fun with Tubes - Guitar Preamp
  218. Which valves for MF CD-T
  219. 6C33C-EB / 6C33C-EV extended life ?
  220. Yamamoto A-08S RCA 45 tube amplifier original schematic
  221. Audiovalve RKV schematic (hybrid headphones amp)
  222. Music Angel EL34 XDSE
  223. Dynaco PAS Preamp Tone Controls
  224. build 805 or 845 se for ~$1000
  225. Built a quick 26 pre yesterday..nice so far,,
  226. An UL preamp idea.
  227. 6BX7 PSpice Model?
  228. using 24G and 3B28 in an od ball amp.......
  229. Tube Line Buffer
  230. Please help me build an amp for my father
  231. Why is my phono amp fatiguing?
  232. Heater current drawn by 8416
  233. want dead counterpoint SA100 SA-100 in good cosmetics
  234. Cathode Followers and Clipping
  235. transformer secondary connections
  236. imp amp
  237. Information 6DJ8
  238. Smoothing Cap = Noise Source?
  239. peavey ultra 60 footswitch wiring diagram
  240. 6S19P budget SE.
  241. adding reverb to a PA head
  242. My 2 new latest Dynaco ST-70's
  243. help with KT88 / mikaels SE amp
  244. twin reverb 100 watt
  245. adding LEDs to amp head
  246. What Is Line Level????
  247. chokes, caps, and long distance relationships
  248. First foray into tubes!!
  249. Simple Hi-end 845 amplifier
  250. increased choke inductance - recommended?

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