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  1. Suggested replacements for Chinese tubes
  2. What to do with these.....
  3. ECL82 PP "reference" amp
  4. Heater TX proximity
  5. Quick question on the PP-C1 amp
  6. SET "interstage coupler" for First Watt F4
  7. 811A amp Class A2
  8. TVC before Input Transformer?
  9. Point-to-Point, Pointers
  10. Triode recommendation
  11. Schmitt & CCS
  12. Simple DC Heater Supply
  13. Output transformers ? sound quality ?
  14. KT88 Minimum Mounting Distance
  15. LED bias indicator
  16. Standby Switch
  17. chinese tube amp
  18. Broskie OTL
  19. Connecting a single plate to multiple screens?
  20. voltage divider+Aikido
  21. Wiring PSU and Aikido PCB
  22. Mission 300b parallel single ended
  23. Vietnam tube amplifier festival
  24. learning design but need help
  25. tutorial software
  26. Fisher 500C troubleshooting
  27. triode pentodes
  28. Deriving Secondary Voltages
  29. Here's the W-5M schematics . . .
  30. Question for Heathkit W-5M owners
  31. Classic 16.0
  32. 100 Ohm loudspeaker
  33. Are Srpp's Any Good (please Help)
  34. Blasphemy, I'm sure
  35. Decware ZSLA buffer -- worth cloning?
  36. Pse El84
  37. 6S19P Push-Pull Amplifier
  38. Class B Triodes
  39. Need a serious PP driver stage
  40. laptop->tubes?
  41. cathode follower -- damping factor (HELP please)
  42. Interstage X-former identification
  43. Multi-turn pot?
  44. 6L6G and 6L6GB differences?
  45. 6AK6 low power tube amp finished
  46. 7 pin X
  47. Replacing KT88 with KT90 - Beginner's questions
  48. way to estimate choke current rating?
  49. attn: Montreal, QC, Canada, OPAMPS!
  50. Hiss but no hum...
  51. Cap size for Aikido heater PS?
  52. Heathkit W-5M
  53. NTK " Teds tube mic"
  54. Making a Bias Voltage from B+ tape?
  55. Reg. Heater Circuit
  56. 6AG7 UL Curves
  57. Best SE output transformer for 300b - shootout
  58. Single ended amp from class A push-pull
  59. Yaqin MC-100b schematic diagram
  60. 12/24 volt tubes
  61. Favorite noval hi gain dual triode?
  62. AVO MKIII Tester Operation?
  63. Aikido users- anyone NOT have turn-off thump?
  64. Optimum value for volume control?
  65. VAL MPS mark II preamp gain reduction
  66. It is asked drawing 100 or 200 watts amplifier
  67. Mystery ST-70 Driver Board
  68. First Timer needs help
  69. Help. Bogen m60a
  70. grid-grounded preamp sound
  71. Rectifier switching / choke ringing noise
  72. Single Ended Amp Design -- Help Needed
  73. tube current
  74. Needed : ECF83, can anyone help ??
  75. Problem with a solid state CCS
  76. Looking for low-ish rp single triode
  77. Cleaning beverage out of inside tube amp
  78. Aikido problems!!!
  79. Another Power Supply Question
  80. 2a3 output transformers....
  81. yet another 6em7 amp
  82. zenith amp
  83. 6AG7 Amplifier
  84. Valve Power Supplies?
  85. tube tracer article
  86. PCB design techniques for Tube Amps
  87. Adjectives for tube sound!
  88. Question about Amperex tubes and a preamp
  89. I want to build a preamp for my dad.. thoughts?
  90. Constant Current DC Heater Supply
  91. Which valves for MF CD-T
  92. 6C33C-EB / 6C33C-EV extended life ?
  93. Yamamoto A-08S RCA 45 tube amplifier original schematic
  94. Audiovalve RKV schematic (hybrid headphones amp)
  95. Music Angel EL34 XDSE
  96. Dynaco PAS Preamp Tone Controls
  97. build 805 or 845 se for ~$1000
  98. Built a quick 26 pre yesterday..nice so far,,
  99. An UL preamp idea.
  100. 6BX7 PSpice Model?
  101. using 24G and 3B28 in an od ball amp.......
  102. Tube Line Buffer
  103. Please help me build an amp for my father
  104. Why is my phono amp fatiguing?
  105. Heater current drawn by 8416
  106. want dead counterpoint SA100 SA-100 in good cosmetics
  107. Cathode Followers and Clipping
  108. transformer secondary connections
  109. imp amp
  110. Information 6DJ8
  111. Smoothing Cap = Noise Source?
  112. 6S19P budget SE.
  113. My 2 new latest Dynaco ST-70's
  114. help with KT88 / mikaels SE amp
  115. adding LEDs to amp head
  116. What Is Line Level????
  117. chokes, caps, and long distance relationships
  118. First foray into tubes!!
  119. Simple Hi-end 845 amplifier
  120. increased choke inductance - recommended?
  121. HELP PLEASE - with preamp design
  122. Alternative to James OPTs
  123. DIY preamp tube: Audio Research Reference 3???
  124. Crowhurst's Twin Coupled Amplifier
  125. 6lw6 tv sweep tube bias?
  126. 24V aikido build!
  127. magnavox tube radio
  128. New S5 L series kits
  129. Anyone has experience with Stranwood
  130. 6n6p amp
  131. DC Darling Amp Buzzing on both channels.
  132. 6SL7 EL34 300B amp
  133. I just installed Yeos (DIY Paradise) DC Blocker
  134. Measuring Cathode Current
  135. Need the Ogirin Circuit of Bruce Berman
  136. Input Choke Too Small
  137. Would a line stage/preamp be beneficial? NEWBIE question
  138. 6p45c
  139. fanon pa amp schematic
  140. line stage confusion
  141. Hammond Transformer Secondary Connections
  142. Klimo Merlin LS Tube Power Supply
  143. OPT Design Assistante (EL84)
  144. Hum - can't find an answer by searching the forum
  145. Please critique my plans for a WE91 clone.
  146. Emission Labs 300B Mesh plate
  147. DRD Power Supply
  148. Octal Champ works - pls check design
  149. telefunken EL 34 audio tube
  150. Bias instability in Heathkit W-5M amp
  151. EL-34 instability in EICO HF-35 amp
  152. Matching Impedances
  153. Open-Source Audio Input Switch
  154. Phono pre amp RF problem
  155. Best CHEAP + best BEST current production EL34?
  156. New toy
  157. EL84 SEP schematic. Some questions.
  158. Referencing DC heaters to cathode
  159. Need advice on Val Audio amp with EL-34 Tubes
  160. Please help a newbie with PSU current requirement for Aikido linestage
  161. Loudspeaker noise from 300B
  162. Schematic for GU-50, EL34, 6J32P ???
  163. alternative for heater / B+ references
  164. need a little help from some tube Gurus!!!
  165. EF86 + SPICE = no noise contribution?
  166. 6n1 tube = 6n1p
  167. One channel softer than the other, humming and buzzing
  168. Parallel Output Transformers
  169. Distortion from heater sag?
  170. Testing 5842 / 417a
  171. RH ECL86 Amp: Dave?
  172. High gain pentodes
  173. Tube Matching and Push-Pull
  174. Question on Input Connections
  175. s5electronics tube amp kit damping factor
  176. 6L6s and cabinet selections HELP!!!!
  177. source of nickel + silicon steel laminations
  178. Explanation for this problem?
  179. turn off thump
  180. Pop from amp when turning off
  181. Valve noobie asks for help / advice
  182. Polypropylene vs electrolytic in Power supply
  183. 6S4P vs 5842
  184. Calibrating Your Hickok Tube Tester
  185. Which 2A3 ?
  186. New design: 12V push-pull tube amplifier
  187. hybrid power supply: diode bridge into diode tube
  188. heater reference to B+ and buzzing trafo
  189. Hum cancelling scheme?
  190. Run a transformer backwards?
  191. FIVRE RRCF info needed
  192. Siemens Valvo ED-8000
  193. My last Zamir Aleph
  194. Questions about first tube PSU!
  195. Looking for site
  196. Heater voltage mismatch
  197. Contacting Pete Millet for 813 PSU?
  198. Suggestions for first tube project?
  199. Just Saying Howdy
  200. Wiring a tube rectifier PSU
  201. Looking for a small yet powerful pentode / dual triode?
  202. Earth Bus Wire - Where can I get it?
  203. Tube Amp Startup
  204. 45 amplifier
  205. Noob saying Hi...
  206. Maida regulator
  207. Sensitivity limiter in Bogen MX60a
  208. Just finished first amp
  209. 6080 / 6AS7G power amplifier
  210. Schematics
  211. General questions before finishing up ST-35 clone
  212. Will a 12AX7 sub. for 12DW7/7247?
  213. Deutsche Wurlitzer Lyric Jukebox?
  214. Made in China buyer beware...
  215. Variac to power-up Beveridge OTLs?
  216. Any ideas on how old this is?
  217. Philips Tube radio
  218. Improve Avel toroid in OTL amp
  219. tube pre amp mods in queensland, australia
  220. 6SL7GT pre-amp
  221. Aikido circuit question
  222. question
  223. Edcor OPT's w/ SimpleSE
  224. Please check this PSU
  225. met. MKP in oil capacitors for PSU?
  226. EH EL34's at +600V?
  227. The Infamous Kay 703C! - Help finding an output transformer?
  228. MOT's as output transformers?
  229. Grain oriented silicon steel core data needed
  230. PSUD II help
  231. Tube curves
  232. S-5 electronics amp kits
  233. up-to-date El Cheapo schematic
  234. unknown output trannie
  235. Help needed with KT88 Amp design
  236. Bogen MX60a
  237. AIKIDO - Low-volage with buffer version
  238. 6N6P cascode calculation
  239. 866a Min operating voltages
  240. new 6V6 amp
  241. Tube-based CCS- 0.2uF cap OK?
  242. DHT filament PSU: What would you do?
  243. PSU problem
  244. 811A se amp using a solid state driver
  245. ECC83 - Long Plate vs Short Plate
  246. Tube Matching
  247. Cascoded mu-follower
  248. DIY speaker choice for SE
  249. Output transformer wanted
  250. Tube Tester

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