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  1. TINA-TI Tube Simulation
  2. Fixed Bias v Ultrapath
  3. Traynor YBA200 6550 help!
  4. cathode follower asymmetric slew
  5. 6SN7 with transformer coupling
  6. 6AQ7 - why so cheap???
  7. Grommes 260
  8. heathkit aa-81 mono blocks
  9. feedbackless interstage p-p kt88 amp
  10. Using Horizontal Output Tubes - Power Supply
  11. 6e5c
  12. Mr Liang 845 Sound :(
  13. Test pentode grids without a tester
  14. Info required : GAMMA VALVE AMPS..
  15. 6SN7 plate voltage, current and lifespan
  16. Clarification of floating heater supply
  17. Changed a cap and lost some bass...?
  18. 6P9/6AG7 Triode Amplifier
  19. Chokes Designed for Choke Input PSU's
  20. Power trafo...
  21. Any value to modding a UL OPT to CFBK?
  22. One guitar, multiple amps at once?
  23. Rogers Cadet III Advice & Opinions Needed
  24. DCG5/5000GS Valve
  25. Morgan Jones on Google Books
  26. CCS for 12B4 linestage
  27. 6j9p
  28. philips hf 303 amp
  29. DIY tube testing Curve Tracer
  30. Amplifier impedance and pot selection
  31. Tube rise time and slew rate
  32. What's your favourite sounding DIY/kit tube amp?
  33. How to convert a 220v Chinese amp to 110v for US use
  34. look for schematic of 12v preamp ???
  35. Bevois Valley and parallel push pull
  36. Amp Wiring Color Code
  37. Xindak 805 monos $4700/pr USD
  38. A new DHT power supply idea
  39. 852 tube
  40. Tube Matcher help needed, ala PassDIY
  41. What's the difference?
  42. Cathode Feedback How-To?
  43. Is Thier Away To Clear Up Distortion???
  44. How much feedback for PP penthode?
  45. To regulate or not to regulate
  46. Anyone used interstage transformers for a 300B?
  47. Hissing Sound in KT88 Amp
  48. Go black or go around?
  49. Triodes that would like a 10K a-a OPT?
  50. Yaqin mc10L
  51. Cycline3 on the 12AU7
  52. How Would You Change This Soildstate Circuit To Tube
  53. Using existing transformer winding to provide and additional supply
  54. Magnetic shields for transformers
  55. First DIY job: Dual Tube Recording Preamp
  56. James Transformers
  57. Audiopax Model 7
  58. Isis 3030 Monoblocks
  59. From diode to tube rectification in my Aikido
  60. Williamson KT77 Question
  61. mu followers --- current --- please help
  62. need tube schematic
  63. switch snubber for Aikido
  64. Pioneer Tube Schematics
  65. Question about "bloaty" bass with SET and KT88's
  66. Ultron 6v6GT
  67. low power OTLs
  68. 6H30 equivalents
  69. What Would You Do?
  70. k-502/k-12m vs. Model 1 pcl82
  71. Shunting Pot
  72. Suggested replacements for Chinese tubes
  73. What to do with these.....
  74. ECL82 PP "reference" amp
  75. Heater TX proximity
  76. Quick question on the PP-C1 amp
  77. SET "interstage coupler" for First Watt F4
  78. 811A amp Class A2
  79. TVC before Input Transformer?
  80. Point-to-Point, Pointers
  81. Triode recommendation
  82. Schmitt & CCS
  83. Simple DC Heater Supply
  84. Output transformers ? sound quality ?
  85. KT88 Minimum Mounting Distance
  86. LED bias indicator
  87. Standby Switch
  88. chinese tube amp
  89. Broskie OTL
  90. Connecting a single plate to multiple screens?
  91. voltage divider+Aikido
  92. Wiring PSU and Aikido PCB
  93. Mission 300b parallel single ended
  94. Vietnam tube amplifier festival
  95. learning design but need help
  96. tutorial software
  97. Fisher 500C troubleshooting
  98. triode pentodes
  99. Deriving Secondary Voltages
  100. Here's the W-5M schematics . . .
  101. Question for Heathkit W-5M owners
  102. Classic 16.0
  103. 100 Ohm loudspeaker
  104. Are Srpp's Any Good (please Help)
  105. Blasphemy, I'm sure
  106. Decware ZSLA buffer -- worth cloning?
  107. Pse El84
  108. 6S19P Push-Pull Amplifier
  109. Class B Triodes
  110. Need a serious PP driver stage
  111. laptop->tubes?
  112. cathode follower -- damping factor (HELP please)
  113. Interstage X-former identification
  114. Multi-turn pot?
  115. 6L6G and 6L6GB differences?
  116. 6AK6 low power tube amp finished
  117. 7 pin X
  118. Replacing KT88 with KT90 - Beginner's questions
  119. way to estimate choke current rating?
  120. attn: Montreal, QC, Canada, OPAMPS!
  121. Hiss but no hum...
  122. Cap size for Aikido heater PS?
  123. Heathkit W-5M
  124. NTK " Teds tube mic"
  125. Making a Bias Voltage from B+ tape?
  126. Reg. Heater Circuit
  127. 6AG7 UL Curves
  128. Best SE output transformer for 300b - shootout
  129. Single ended amp from class A push-pull
  130. Yaqin MC-100b schematic diagram
  131. 12/24 volt tubes
  132. Favorite noval hi gain dual triode?
  133. AVO MKIII Tester Operation?
  134. Aikido users- anyone NOT have turn-off thump?
  135. Optimum value for volume control?
  136. VAL MPS mark II preamp gain reduction
  137. It is asked drawing 100 or 200 watts amplifier
  138. Mystery ST-70 Driver Board
  139. First Timer needs help
  140. Help. Bogen m60a
  141. grid-grounded preamp sound
  142. Rectifier switching / choke ringing noise
  143. Single Ended Amp Design -- Help Needed
  144. tube current
  145. Needed : ECF83, can anyone help ??
  146. Problem with a solid state CCS
  147. Looking for low-ish rp single triode
  148. Cleaning beverage out of inside tube amp
  149. Aikido problems!!!
  150. Another Power Supply Question
  151. 2a3 output transformers....
  152. yet another 6em7 amp
  153. zenith amp
  154. 6AG7 Amplifier
  155. Valve Power Supplies?
  156. tube tracer article
  157. PCB design techniques for Tube Amps
  158. Adjectives for tube sound!
  159. Question about Amperex tubes and a preamp
  160. I want to build a preamp for my dad.. thoughts?
  161. Constant Current DC Heater Supply
  162. Weekend Fun with Tubes - Guitar Preamp
  163. Which valves for MF CD-T
  164. 6C33C-EB / 6C33C-EV extended life ?
  165. Yamamoto A-08S RCA 45 tube amplifier original schematic
  166. Audiovalve RKV schematic (hybrid headphones amp)
  167. Music Angel EL34 XDSE
  168. Dynaco PAS Preamp Tone Controls
  169. build 805 or 845 se for ~$1000
  170. Built a quick 26 pre yesterday..nice so far,,
  171. An UL preamp idea.
  172. 6BX7 PSpice Model?
  173. using 24G and 3B28 in an od ball amp.......
  174. Tube Line Buffer
  175. Please help me build an amp for my father
  176. Why is my phono amp fatiguing?
  177. Heater current drawn by 8416
  178. want dead counterpoint SA100 SA-100 in good cosmetics
  179. Cathode Followers and Clipping
  180. transformer secondary connections
  181. imp amp
  182. Information 6DJ8
  183. Smoothing Cap = Noise Source?
  184. peavey ultra 60 footswitch wiring diagram
  185. 6S19P budget SE.
  186. adding reverb to a PA head
  187. My 2 new latest Dynaco ST-70's
  188. help with KT88 / mikaels SE amp
  189. twin reverb 100 watt
  190. adding LEDs to amp head
  191. What Is Line Level????
  192. chokes, caps, and long distance relationships
  193. First foray into tubes!!
  194. Simple Hi-end 845 amplifier
  195. increased choke inductance - recommended?
  196. HELP PLEASE - with preamp design
  197. Alternative to James OPTs
  198. DIY preamp tube: Audio Research Reference 3???
  199. Crowhurst's Twin Coupled Amplifier
  200. 6lw6 tv sweep tube bias?
  201. 24V aikido build!
  202. magnavox tube radio
  203. New S5 L series kits
  204. Anyone has experience with Stranwood
  205. 6n6p amp
  206. DC Darling Amp Buzzing on both channels.
  207. 6SL7 EL34 300B amp
  208. I just installed Yeos (DIY Paradise) DC Blocker
  209. Measuring Cathode Current
  210. Need the Ogirin Circuit of Bruce Berman
  211. Input Choke Too Small
  212. Poodle gives clues to capacitor construction
  213. Would a line stage/preamp be beneficial? NEWBIE question
  214. 6p45c
  215. fanon pa amp schematic
  216. line stage confusion
  217. Hammond Transformer Secondary Connections
  218. Klimo Merlin LS Tube Power Supply
  219. OPT Design Assistante (EL84)
  220. Hum - can't find an answer by searching the forum
  221. Please critique my plans for a WE91 clone.
  222. Emission Labs 300B Mesh plate
  223. DRD Power Supply
  224. Octal Champ works - pls check design
  225. telefunken EL 34 audio tube
  226. Bias instability in Heathkit W-5M amp
  227. EL-34 instability in EICO HF-35 amp
  228. Russian paper in oil caps - any good?
  229. Matching Impedances
  230. Open-Source Audio Input Switch
  231. Phono pre amp RF problem
  232. Best CHEAP + best BEST current production EL34?
  233. New toy
  234. EL84 SEP schematic. Some questions.
  235. Referencing DC heaters to cathode
  236. Need advice on Val Audio amp with EL-34 Tubes
  237. Please help a newbie with PSU current requirement for Aikido linestage
  238. Loudspeaker noise from 300B
  239. Schematic for GU-50, EL34, 6J32P ???
  240. alternative for heater / B+ references
  241. need a little help from some tube Gurus!!!
  242. EF86 + SPICE = no noise contribution?
  243. 6n1 tube = 6n1p
  244. One channel softer than the other, humming and buzzing
  245. Parallel Output Transformers
  246. Distortion from heater sag?
  247. Testing 5842 / 417a
  248. RH ECL86 Amp: Dave?
  249. High gain pentodes
  250. Tube Matching and Push-Pull

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