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  1. Info required : GAMMA VALVE AMPS..
  2. 6SN7 plate voltage, current and lifespan
  3. Clarification of floating heater supply
  4. Changed a cap and lost some bass...?
  5. 6P9/6AG7 Triode Amplifier
  6. Chokes Designed for Choke Input PSU's
  7. Power trafo...
  8. Any value to modding a UL OPT to CFBK?
  9. One guitar, multiple amps at once?
  10. Rogers Cadet III Advice & Opinions Needed
  11. DCG5/5000GS Valve
  12. Morgan Jones on Google Books
  13. CCS for 12B4 linestage
  14. 6j9p
  15. philips hf 303 amp
  16. DIY tube testing Curve Tracer
  17. Amplifier impedance and pot selection
  18. Tube rise time and slew rate
  19. What's your favourite sounding DIY/kit tube amp?
  20. How to convert a 220v Chinese amp to 110v for US use
  21. look for schematic of 12v preamp ???
  22. Bevois Valley and parallel push pull
  23. Amp Wiring Color Code
  24. Xindak 805 monos $4700/pr USD
  25. A new DHT power supply idea
  26. 852 tube
  27. Tube Matcher help needed, ala PassDIY
  28. What's the difference?
  29. Cathode Feedback How-To?
  30. Is Thier Away To Clear Up Distortion???
  31. How much feedback for PP penthode?
  32. To regulate or not to regulate
  33. Anyone used interstage transformers for a 300B?
  34. Hissing Sound in KT88 Amp
  35. Go black or go around?
  36. Triodes that would like a 10K a-a OPT?
  37. Yaqin mc10L
  38. Cycline3 on the 12AU7
  39. How Would You Change This Soildstate Circuit To Tube
  40. Using existing transformer winding to provide and additional supply
  41. Magnetic shields for transformers
  42. First DIY job: Dual Tube Recording Preamp
  43. James Transformers
  44. Audiopax Model 7
  45. Isis 3030 Monoblocks
  46. From diode to tube rectification in my Aikido
  47. Williamson KT77 Question
  48. mu followers --- current --- please help
  49. need tube schematic
  50. switch snubber for Aikido
  51. Pioneer Tube Schematics
  52. Question about "bloaty" bass with SET and KT88's
  53. Ultron 6v6GT
  54. low power OTLs
  55. 6H30 equivalents
  56. What Would You Do?
  57. k-502/k-12m vs. Model 1 pcl82
  58. Shunting Pot
  59. Suggested replacements for Chinese tubes
  60. What to do with these.....
  61. ECL82 PP "reference" amp
  62. Heater TX proximity
  63. Quick question on the PP-C1 amp
  64. SET "interstage coupler" for First Watt F4
  65. 811A amp Class A2
  66. TVC before Input Transformer?
  67. Point-to-Point, Pointers
  68. Triode recommendation
  69. Schmitt & CCS
  70. Simple DC Heater Supply
  71. Output transformers ? sound quality ?
  72. KT88 Minimum Mounting Distance
  73. LED bias indicator
  74. Standby Switch
  75. chinese tube amp
  76. Broskie OTL
  77. Connecting a single plate to multiple screens?
  78. voltage divider+Aikido
  79. Wiring PSU and Aikido PCB
  80. Mission 300b parallel single ended
  81. Vietnam tube amplifier festival
  82. learning design but need help
  83. tutorial software
  84. Fisher 500C troubleshooting
  85. triode pentodes
  86. Deriving Secondary Voltages
  87. Here's the W-5M schematics . . .
  88. Question for Heathkit W-5M owners
  89. Classic 16.0
  90. 100 Ohm loudspeaker
  91. Are Srpp's Any Good (please Help)
  92. Blasphemy, I'm sure
  93. Decware ZSLA buffer -- worth cloning?
  94. Pse El84
  95. 6S19P Push-Pull Amplifier
  96. Class B Triodes
  97. Need a serious PP driver stage
  98. laptop->tubes?
  99. cathode follower -- damping factor (HELP please)
  100. Interstage X-former identification
  101. Multi-turn pot?
  102. 6L6G and 6L6GB differences?
  103. 6AK6 low power tube amp finished
  104. 7 pin X
  105. Replacing KT88 with KT90 - Beginner's questions
  106. way to estimate choke current rating?
  107. attn: Montreal, QC, Canada, OPAMPS!
  108. Hiss but no hum...
  109. Cap size for Aikido heater PS?
  110. Heathkit W-5M
  111. NTK " Teds tube mic"
  112. Making a Bias Voltage from B+ tape?
  113. Reg. Heater Circuit
  114. 6AG7 UL Curves
  115. Best SE output transformer for 300b - shootout
  116. Single ended amp from class A push-pull
  117. Yaqin MC-100b schematic diagram
  118. 12/24 volt tubes
  119. Favorite noval hi gain dual triode?
  120. AVO MKIII Tester Operation?
  121. Aikido users- anyone NOT have turn-off thump?
  122. Optimum value for volume control?
  123. VAL MPS mark II preamp gain reduction
  124. It is asked drawing 100 or 200 watts amplifier
  125. Mystery ST-70 Driver Board
  126. First Timer needs help
  127. Help. Bogen m60a
  128. grid-grounded preamp sound
  129. Rectifier switching / choke ringing noise
  130. Single Ended Amp Design -- Help Needed
  131. tube current
  132. Needed : ECF83, can anyone help ??
  133. Problem with a solid state CCS
  134. Looking for low-ish rp single triode
  135. Cleaning beverage out of inside tube amp
  136. Aikido problems!!!
  137. Another Power Supply Question
  138. 2a3 output transformers....
  139. yet another 6em7 amp
  140. zenith amp
  141. 6AG7 Amplifier
  142. Valve Power Supplies?
  143. tube tracer article
  144. PCB design techniques for Tube Amps
  145. Adjectives for tube sound!
  146. Question about Amperex tubes and a preamp
  147. I want to build a preamp for my dad.. thoughts?
  148. Constant Current DC Heater Supply
  149. Weekend Fun with Tubes - Guitar Preamp
  150. Which valves for MF CD-T
  151. 6C33C-EB / 6C33C-EV extended life ?
  152. Yamamoto A-08S RCA 45 tube amplifier original schematic
  153. Audiovalve RKV schematic (hybrid headphones amp)
  154. Music Angel EL34 XDSE
  155. Dynaco PAS Preamp Tone Controls
  156. build 805 or 845 se for ~$1000
  157. Built a quick 26 pre yesterday..nice so far,,
  158. An UL preamp idea.
  159. 6BX7 PSpice Model?
  160. using 24G and 3B28 in an od ball amp.......
  161. Tube Line Buffer
  162. Please help me build an amp for my father
  163. Why is my phono amp fatiguing?
  164. Heater current drawn by 8416
  165. want dead counterpoint SA100 SA-100 in good cosmetics
  166. Cathode Followers and Clipping
  167. transformer secondary connections
  168. imp amp
  169. Information 6DJ8
  170. Smoothing Cap = Noise Source?
  171. peavey ultra 60 footswitch wiring diagram
  172. 6S19P budget SE.
  173. adding reverb to a PA head
  174. My 2 new latest Dynaco ST-70's
  175. help with KT88 / mikaels SE amp
  176. twin reverb 100 watt
  177. adding LEDs to amp head
  178. What Is Line Level????
  179. chokes, caps, and long distance relationships
  180. First foray into tubes!!
  181. Simple Hi-end 845 amplifier
  182. increased choke inductance - recommended?
  183. HELP PLEASE - with preamp design
  184. Alternative to James OPTs
  185. DIY preamp tube: Audio Research Reference 3???
  186. Crowhurst's Twin Coupled Amplifier
  187. 6lw6 tv sweep tube bias?
  188. 24V aikido build!
  189. magnavox tube radio
  190. New S5 L series kits
  191. Anyone has experience with Stranwood
  192. 6n6p amp
  193. DC Darling Amp Buzzing on both channels.
  194. 6SL7 EL34 300B amp
  195. I just installed Yeos (DIY Paradise) DC Blocker
  196. Measuring Cathode Current
  197. Need the Ogirin Circuit of Bruce Berman
  198. Input Choke Too Small
  199. Poodle gives clues to capacitor construction
  200. Would a line stage/preamp be beneficial? NEWBIE question
  201. 6p45c
  202. fanon pa amp schematic
  203. line stage confusion
  204. Hammond Transformer Secondary Connections
  205. Klimo Merlin LS Tube Power Supply
  206. OPT Design Assistante (EL84)
  207. Hum - can't find an answer by searching the forum
  208. Please critique my plans for a WE91 clone.
  209. Emission Labs 300B Mesh plate
  210. DRD Power Supply
  211. Octal Champ works - pls check design
  212. telefunken EL 34 audio tube
  213. Bias instability in Heathkit W-5M amp
  214. EL-34 instability in EICO HF-35 amp
  215. Russian paper in oil caps - any good?
  216. Matching Impedances
  217. Open-Source Audio Input Switch
  218. Phono pre amp RF problem
  219. Best CHEAP + best BEST current production EL34?
  220. New toy
  221. EL84 SEP schematic. Some questions.
  222. Referencing DC heaters to cathode
  223. Need advice on Val Audio amp with EL-34 Tubes
  224. Please help a newbie with PSU current requirement for Aikido linestage
  225. Loudspeaker noise from 300B
  226. Schematic for GU-50, EL34, 6J32P ???
  227. alternative for heater / B+ references
  228. need a little help from some tube Gurus!!!
  229. EF86 + SPICE = no noise contribution?
  230. 6n1 tube = 6n1p
  231. One channel softer than the other, humming and buzzing
  232. Parallel Output Transformers
  233. Distortion from heater sag?
  234. Testing 5842 / 417a
  235. RH ECL86 Amp: Dave?
  236. High gain pentodes
  237. Tube Matching and Push-Pull
  238. What constitutes a leaky Coupling capacitor?
  239. Question on Input Connections
  240. s5electronics tube amp kit damping factor
  241. 6L6s and cabinet selections HELP!!!!
  242. source of nickel + silicon steel laminations
  243. Explanation for this problem?
  244. turn off thump
  245. Pop from amp when turning off
  246. Big Paper in Oil Caps
  247. Valve noobie asks for help / advice
  248. Polypropylene vs electrolytic in Power supply
  249. 6S4P vs 5842
  250. Calibrating Your Hickok Tube Tester

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