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  1. 811A amp Class A2
  2. TVC before Input Transformer?
  3. Point-to-Point, Pointers
  4. Triode recommendation
  5. Schmitt & CCS
  6. Simple DC Heater Supply
  7. Output transformers ? sound quality ?
  8. KT88 Minimum Mounting Distance
  9. LED bias indicator
  10. Standby Switch
  11. chinese tube amp
  12. Broskie OTL
  13. Connecting a single plate to multiple screens?
  14. voltage divider+Aikido
  15. Wiring PSU and Aikido PCB
  16. Mission 300b parallel single ended
  17. Vietnam tube amplifier festival
  18. learning design but need help
  19. tutorial software
  20. Fisher 500C troubleshooting
  21. triode pentodes
  22. Deriving Secondary Voltages
  23. Here's the W-5M schematics . . .
  24. Question for Heathkit W-5M owners
  25. Classic 16.0
  26. 100 Ohm loudspeaker
  27. Are Srpp's Any Good (please Help)
  28. Blasphemy, I'm sure
  29. Decware ZSLA buffer -- worth cloning?
  30. Pse El84
  31. 6S19P Push-Pull Amplifier
  32. Class B Triodes
  33. Need a serious PP driver stage
  34. laptop->tubes?
  35. cathode follower -- damping factor (HELP please)
  36. Interstage X-former identification
  37. Multi-turn pot?
  38. 6L6G and 6L6GB differences?
  39. 6AK6 low power tube amp finished
  40. 7 pin X
  41. Replacing KT88 with KT90 - Beginner's questions
  42. way to estimate choke current rating?
  43. attn: Montreal, QC, Canada, OPAMPS!
  44. Hiss but no hum...
  45. Cap size for Aikido heater PS?
  46. Heathkit W-5M
  47. NTK " Teds tube mic"
  48. Making a Bias Voltage from B+ tape?
  49. Reg. Heater Circuit
  50. 6AG7 UL Curves
  51. Best SE output transformer for 300b - shootout
  52. Single ended amp from class A push-pull
  53. Yaqin MC-100b schematic diagram
  54. 12/24 volt tubes
  55. Favorite noval hi gain dual triode?
  56. AVO MKIII Tester Operation?
  57. Aikido users- anyone NOT have turn-off thump?
  58. Optimum value for volume control?
  59. VAL MPS mark II preamp gain reduction
  60. It is asked drawing 100 or 200 watts amplifier
  61. Mystery ST-70 Driver Board
  62. First Timer needs help
  63. Help. Bogen m60a
  64. grid-grounded preamp sound
  65. Rectifier switching / choke ringing noise
  66. Single Ended Amp Design -- Help Needed
  67. tube current
  68. Needed : ECF83, can anyone help ??
  69. Problem with a solid state CCS
  70. Looking for low-ish rp single triode
  71. Cleaning beverage out of inside tube amp
  72. Aikido problems!!!
  73. Another Power Supply Question
  74. 2a3 output transformers....
  75. yet another 6em7 amp
  76. zenith amp
  77. 6AG7 Amplifier
  78. Valve Power Supplies?
  79. tube tracer article
  80. PCB design techniques for Tube Amps
  81. Adjectives for tube sound!
  82. Question about Amperex tubes and a preamp
  83. I want to build a preamp for my dad.. thoughts?
  84. Constant Current DC Heater Supply
  85. Weekend Fun with Tubes - Guitar Preamp
  86. Which valves for MF CD-T
  87. 6C33C-EB / 6C33C-EV extended life ?
  88. Yamamoto A-08S RCA 45 tube amplifier original schematic
  89. Audiovalve RKV schematic (hybrid headphones amp)
  90. Music Angel EL34 XDSE
  91. Dynaco PAS Preamp Tone Controls
  92. build 805 or 845 se for ~$1000
  93. Built a quick 26 pre yesterday..nice so far,,
  94. An UL preamp idea.
  95. 6BX7 PSpice Model?
  96. using 24G and 3B28 in an od ball amp.......
  97. Tube Line Buffer
  98. Please help me build an amp for my father
  99. Why is my phono amp fatiguing?
  100. Heater current drawn by 8416
  101. want dead counterpoint SA100 SA-100 in good cosmetics
  102. Cathode Followers and Clipping
  103. transformer secondary connections
  104. imp amp
  105. Information 6DJ8
  106. Smoothing Cap = Noise Source?
  107. peavey ultra 60 footswitch wiring diagram
  108. 6S19P budget SE.
  109. adding reverb to a PA head
  110. My 2 new latest Dynaco ST-70's
  111. help with KT88 / mikaels SE amp
  112. twin reverb 100 watt
  113. adding LEDs to amp head
  114. What Is Line Level????
  115. chokes, caps, and long distance relationships
  116. First foray into tubes!!
  117. Simple Hi-end 845 amplifier
  118. increased choke inductance - recommended?
  119. HELP PLEASE - with preamp design
  120. Alternative to James OPTs
  121. DIY preamp tube: Audio Research Reference 3???
  122. Crowhurst's Twin Coupled Amplifier
  123. 6lw6 tv sweep tube bias?
  124. 24V aikido build!
  125. magnavox tube radio
  126. New S5 L series kits
  127. Anyone has experience with Stranwood
  128. 6n6p amp
  129. DC Darling Amp Buzzing on both channels.
  130. 6SL7 EL34 300B amp
  131. I just installed Yeos (DIY Paradise) DC Blocker
  132. Measuring Cathode Current
  133. Need the Ogirin Circuit of Bruce Berman
  134. Input Choke Too Small
  135. Poodle gives clues to capacitor construction
  136. Would a line stage/preamp be beneficial? NEWBIE question
  137. 6p45c
  138. fanon pa amp schematic
  139. line stage confusion
  140. Hammond Transformer Secondary Connections
  141. Klimo Merlin LS Tube Power Supply
  142. OPT Design Assistante (EL84)
  143. Hum - can't find an answer by searching the forum
  144. Please critique my plans for a WE91 clone.
  145. Emission Labs 300B Mesh plate
  146. DRD Power Supply
  147. Octal Champ works - pls check design
  148. telefunken EL 34 audio tube
  149. Bias instability in Heathkit W-5M amp
  150. EL-34 instability in EICO HF-35 amp
  151. Russian paper in oil caps - any good?
  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. What constitutes a leaky Coupling capacitor?
  175. Question on Input Connections
  176. s5electronics tube amp kit damping factor
  177. 6L6s and cabinet selections HELP!!!!
  178. source of nickel + silicon steel laminations
  179. Explanation for this problem?
  180. turn off thump
  181. Pop from amp when turning off
  182. Big Paper in Oil Caps
  183. Valve noobie asks for help / advice
  184. Polypropylene vs electrolytic in Power supply
  185. 6S4P vs 5842
  186. Calibrating Your Hickok Tube Tester
  187. Which 2A3 ?
  188. New design: 12V push-pull tube amplifier
  189. hybrid power supply: diode bridge into diode tube
  190. heater reference to B+ and buzzing trafo
  191. Hum cancelling scheme?
  192. Run a transformer backwards?
  193. FIVRE RRCF info needed
  194. Siemens Valvo ED-8000
  195. 6J5 and 6F6 SE - enough gain for guitar?
  196. My last Zamir Aleph
  197. Questions about first tube PSU!
  198. Looking for site
  199. Heater voltage mismatch
  200. Contacting Pete Millet for 813 PSU?
  201. Suggestions for first tube project?
  202. Just Saying Howdy
  203. Wiring a tube rectifier PSU
  204. Looking for a small yet powerful pentode / dual triode?
  205. Earth Bus Wire - Where can I get it?
  206. Tube Amp Startup
  207. 45 amplifier
  208. Noob saying Hi...
  209. Maida regulator
  210. Sensitivity limiter in Bogen MX60a
  211. Just finished first amp
  212. 6080 / 6AS7G power amplifier
  213. Schematics
  214. General questions before finishing up ST-35 clone
  215. Will a 12AX7 sub. for 12DW7/7247?
  216. Deutsche Wurlitzer Lyric Jukebox?
  217. Made in China buyer beware...
  218. Variac to power-up Beveridge OTLs?
  219. Any ideas on how old this is?
  220. Philips Tube radio
  221. Improve Avel toroid in OTL amp
  222. tube pre amp mods in queensland, australia
  223. 6SL7GT pre-amp
  224. Aikido circuit question
  225. question
  226. Edcor OPT's w/ SimpleSE
  227. Please check this PSU
  228. met. MKP in oil capacitors for PSU?
  229. EH EL34's at +600V?
  230. The Infamous Kay 703C! - Help finding an output transformer?
  231. MOT's as output transformers?
  232. Grain oriented silicon steel core data needed
  233. Gibson reverb driver transformer
  234. PSUD II help
  235. Edcor In SE Guitar Amp
  236. Tube curves
  237. S-5 electronics amp kits
  238. up-to-date El Cheapo schematic
  239. unknown output trannie
  240. Help needed with KT88 Amp design
  241. Bogen MX60a
  242. AIKIDO - Low-volage with buffer version
  243. 6N6P cascode calculation
  244. 866a Min operating voltages
  245. new 6V6 amp
  246. Tube-based CCS- 0.2uF cap OK?
  247. DHT filament PSU: What would you do?
  248. PSU problem
  249. 811A se amp using a solid state driver
  250. ECC83 - Long Plate vs Short Plate

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