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  1. cathode follower -- damping factor (HELP please)
  2. Interstage X-former identification
  3. Multi-turn pot?
  4. 6L6G and 6L6GB differences?
  5. 6AK6 low power tube amp finished
  6. 7 pin X
  7. Replacing KT88 with KT90 - Beginner's questions
  8. way to estimate choke current rating?
  9. attn: Montreal, QC, Canada, OPAMPS!
  10. Hiss but no hum...
  11. Cap size for Aikido heater PS?
  12. Heathkit W-5M
  13. NTK " Teds tube mic"
  14. Making a Bias Voltage from B+ tape?
  15. Reg. Heater Circuit
  16. 6AG7 UL Curves
  17. Best SE output transformer for 300b - shootout
  18. Single ended amp from class A push-pull
  19. Yaqin MC-100b schematic diagram
  20. 12/24 volt tubes
  21. Favorite noval hi gain dual triode?
  22. AVO MKIII Tester Operation?
  23. Aikido users- anyone NOT have turn-off thump?
  24. Optimum value for volume control?
  25. VAL MPS mark II preamp gain reduction
  26. It is asked drawing 100 or 200 watts amplifier
  27. Mystery ST-70 Driver Board
  28. First Timer needs help
  29. Help. Bogen m60a
  30. grid-grounded preamp sound
  31. Rectifier switching / choke ringing noise
  32. Single Ended Amp Design -- Help Needed
  33. tube current
  34. Needed : ECF83, can anyone help ??
  35. Problem with a solid state CCS
  36. Looking for low-ish rp single triode
  37. Cleaning beverage out of inside tube amp
  38. Aikido problems!!!
  39. Another Power Supply Question
  40. 2a3 output transformers....
  41. yet another 6em7 amp
  42. zenith amp
  43. 6AG7 Amplifier
  44. Valve Power Supplies?
  45. tube tracer article
  46. PCB design techniques for Tube Amps
  47. Adjectives for tube sound!
  48. Question about Amperex tubes and a preamp
  49. I want to build a preamp for my dad.. thoughts?
  50. Constant Current DC Heater Supply
  51. Which valves for MF CD-T
  52. 6C33C-EB / 6C33C-EV extended life ?
  53. Yamamoto A-08S RCA 45 tube amplifier original schematic
  54. Audiovalve RKV schematic (hybrid headphones amp)
  55. Music Angel EL34 XDSE
  56. Dynaco PAS Preamp Tone Controls
  57. build 805 or 845 se for ~$1000
  58. Built a quick 26 pre yesterday..nice so far,,
  59. An UL preamp idea.
  60. 6BX7 PSpice Model?
  61. using 24G and 3B28 in an od ball amp.......
  62. Tube Line Buffer
  63. Please help me build an amp for my father
  64. Why is my phono amp fatiguing?
  65. Heater current drawn by 8416
  66. want dead counterpoint SA100 SA-100 in good cosmetics
  67. Cathode Followers and Clipping
  68. transformer secondary connections
  69. imp amp
  70. Information 6DJ8
  71. Smoothing Cap = Noise Source?
  72. 6S19P budget SE.
  73. My 2 new latest Dynaco ST-70's
  74. help with KT88 / mikaels SE amp
  75. adding LEDs to amp head
  76. What Is Line Level????
  77. chokes, caps, and long distance relationships
  78. First foray into tubes!!
  79. Simple Hi-end 845 amplifier
  80. increased choke inductance - recommended?
  81. HELP PLEASE - with preamp design
  82. Alternative to James OPTs
  83. DIY preamp tube: Audio Research Reference 3???
  84. Crowhurst's Twin Coupled Amplifier
  85. 6lw6 tv sweep tube bias?
  86. 24V aikido build!
  87. magnavox tube radio
  88. New S5 L series kits
  89. Anyone has experience with Stranwood
  90. 6n6p amp
  91. DC Darling Amp Buzzing on both channels.
  92. 6SL7 EL34 300B amp
  93. I just installed Yeos (DIY Paradise) DC Blocker
  94. Measuring Cathode Current
  95. Need the Ogirin Circuit of Bruce Berman
  96. Input Choke Too Small
  97. Would a line stage/preamp be beneficial? NEWBIE question
  98. 6p45c
  99. fanon pa amp schematic
  100. line stage confusion
  101. Hammond Transformer Secondary Connections
  102. Klimo Merlin LS Tube Power Supply
  103. OPT Design Assistante (EL84)
  104. Hum - can't find an answer by searching the forum
  105. Please critique my plans for a WE91 clone.
  106. Emission Labs 300B Mesh plate
  107. DRD Power Supply
  108. Octal Champ works - pls check design
  109. telefunken EL 34 audio tube
  110. Bias instability in Heathkit W-5M amp
  111. EL-34 instability in EICO HF-35 amp
  112. Matching Impedances
  113. Open-Source Audio Input Switch
  114. Phono pre amp RF problem
  115. Best CHEAP + best BEST current production EL34?
  116. New toy
  117. EL84 SEP schematic. Some questions.
  118. Referencing DC heaters to cathode
  119. Need advice on Val Audio amp with EL-34 Tubes
  120. Please help a newbie with PSU current requirement for Aikido linestage
  121. Loudspeaker noise from 300B
  122. Schematic for GU-50, EL34, 6J32P ???
  123. alternative for heater / B+ references
  124. need a little help from some tube Gurus!!!
  125. EF86 + SPICE = no noise contribution?
  126. 6n1 tube = 6n1p
  127. One channel softer than the other, humming and buzzing
  128. Parallel Output Transformers
  129. Distortion from heater sag?
  130. Testing 5842 / 417a
  131. RH ECL86 Amp: Dave?
  132. High gain pentodes
  133. Tube Matching and Push-Pull
  134. Question on Input Connections
  135. s5electronics tube amp kit damping factor
  136. 6L6s and cabinet selections HELP!!!!
  137. source of nickel + silicon steel laminations
  138. Explanation for this problem?
  139. turn off thump
  140. Pop from amp when turning off
  141. Valve noobie asks for help / advice
  142. Polypropylene vs electrolytic in Power supply
  143. 6S4P vs 5842
  144. Calibrating Your Hickok Tube Tester
  145. Which 2A3 ?
  146. New design: 12V push-pull tube amplifier
  147. hybrid power supply: diode bridge into diode tube
  148. heater reference to B+ and buzzing trafo
  149. Hum cancelling scheme?
  150. Run a transformer backwards?
  151. FIVRE RRCF info needed
  152. Siemens Valvo ED-8000
  153. My last Zamir Aleph
  154. Questions about first tube PSU!
  155. Looking for site
  156. Heater voltage mismatch
  157. Contacting Pete Millet for 813 PSU?
  158. Suggestions for first tube project?
  159. Just Saying Howdy
  160. Wiring a tube rectifier PSU
  161. Looking for a small yet powerful pentode / dual triode?
  162. Earth Bus Wire - Where can I get it?
  163. Tube Amp Startup
  164. 45 amplifier
  165. Noob saying Hi...
  166. Maida regulator
  167. Sensitivity limiter in Bogen MX60a
  168. Just finished first amp
  169. 6080 / 6AS7G power amplifier
  170. Schematics
  171. General questions before finishing up ST-35 clone
  172. Will a 12AX7 sub. for 12DW7/7247?
  173. Deutsche Wurlitzer Lyric Jukebox?
  174. Made in China buyer beware...
  175. Variac to power-up Beveridge OTLs?
  176. Any ideas on how old this is?
  177. Philips Tube radio
  178. Improve Avel toroid in OTL amp
  179. tube pre amp mods in queensland, australia
  180. 6SL7GT pre-amp
  181. Aikido circuit question
  182. question
  183. Edcor OPT's w/ SimpleSE
  184. Please check this PSU
  185. met. MKP in oil capacitors for PSU?
  186. EH EL34's at +600V?
  187. The Infamous Kay 703C! - Help finding an output transformer?
  188. MOT's as output transformers?
  189. Grain oriented silicon steel core data needed
  190. PSUD II help
  191. Tube curves
  192. S-5 electronics amp kits
  193. up-to-date El Cheapo schematic
  194. unknown output trannie
  195. Help needed with KT88 Amp design
  196. Bogen MX60a
  197. AIKIDO - Low-volage with buffer version
  198. 6N6P cascode calculation
  199. 866a Min operating voltages
  200. new 6V6 amp
  201. Tube-based CCS- 0.2uF cap OK?
  202. DHT filament PSU: What would you do?
  203. PSU problem
  204. 811A se amp using a solid state driver
  205. ECC83 - Long Plate vs Short Plate
  206. Tube Matching
  207. Cascoded mu-follower
  208. DIY speaker choice for SE
  209. Output transformer wanted
  210. Tube Tester
  211. 835 amp
  212. One 300B filament supply for stereo?
  213. Aikido Built At Last!!
  214. Question about amount of feedback to apply
  215. design help needed.
  216. LED in cathode
  217. Need help for Eico 1030 regulated power supply
  218. zinc chassis
  219. Anode Cap Question
  220. what pins to use solid rectifier for 5Y3
  221. New PSU for Aikido?
  222. tube anti-vibration mounting
  223. Border Patrol PSU, can anyone help?
  224. Aikido Line Stage
  225. LED Bias Modifications
  226. Standby switch for bridge rectified power supplies.
  227. Decoupling in Phono stages.
  228. easy one valve pre help
  229. Single-ended-series amp with a "1 winding" transformer
  230. Complementary Symmetry Output
  231. Help getting these d$&* Dynascan probes apart!
  232. Aikido output cap selector switch
  233. adding an "on" lamp to amp kit
  234. Why does 6BM8 have so high max plate voltage?
  235. B+ soft start
  236. Unison research
  237. photos of my creations
  238. First Time Project - Finished! Photos Attached
  239. Design parameters for SE OPTs'
  240. want to build a pentode driven drd 2a3!
  241. Passive Magnetic Preamp!
  242. Testing an E288CC (8223)
  243. Need expert help on presence control
  244. Value of output caps for Aikido - how low is too low?
  245. Very expensive WE106A pre-amp, any member had this??
  246. B+ with or without tubes?
  247. 1st Time Project - Spot the howler
  248. Tube flashes on tester... Bad ?
  249. Amp advice needed for a poor DIY er...
  250. DCR of primaries and secondaries of Hammond Transformer

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