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  1. Reg. Heater Circuit
  2. 6AG7 UL Curves
  3. Best SE output transformer for 300b - shootout
  4. Single ended amp from class A push-pull
  5. Yaqin MC-100b schematic diagram
  6. 12/24 volt tubes
  7. Favorite noval hi gain dual triode?
  8. AVO MKIII Tester Operation?
  9. Aikido users- anyone NOT have turn-off thump?
  10. Optimum value for volume control?
  11. VAL MPS mark II preamp gain reduction
  12. It is asked drawing 100 or 200 watts amplifier
  13. Mystery ST-70 Driver Board
  14. First Timer needs help
  15. Help. Bogen m60a
  16. grid-grounded preamp sound
  17. Rectifier switching / choke ringing noise
  18. Single Ended Amp Design -- Help Needed
  19. tube current
  20. Needed : ECF83, can anyone help ??
  21. Problem with a solid state CCS
  22. Looking for low-ish rp single triode
  23. Cleaning beverage out of inside tube amp
  24. Aikido problems!!!
  25. Another Power Supply Question
  26. 2a3 output transformers....
  27. yet another 6em7 amp
  28. zenith amp
  29. 6AG7 Amplifier
  30. Valve Power Supplies?
  31. tube tracer article
  32. PCB design techniques for Tube Amps
  33. Adjectives for tube sound!
  34. Question about Amperex tubes and a preamp
  35. I want to build a preamp for my dad.. thoughts?
  36. Constant Current DC Heater Supply
  37. Weekend Fun with Tubes - Guitar Preamp
  38. Which valves for MF CD-T
  39. 6C33C-EB / 6C33C-EV extended life ?
  40. Yamamoto A-08S RCA 45 tube amplifier original schematic
  41. Audiovalve RKV schematic (hybrid headphones amp)
  42. Music Angel EL34 XDSE
  43. Dynaco PAS Preamp Tone Controls
  44. build 805 or 845 se for ~$1000
  45. Built a quick 26 pre yesterday..nice so far,,
  46. An UL preamp idea.
  47. 6BX7 PSpice Model?
  48. using 24G and 3B28 in an od ball amp.......
  49. Tube Line Buffer
  50. Please help me build an amp for my father
  51. Why is my phono amp fatiguing?
  52. Heater current drawn by 8416
  53. want dead counterpoint SA100 SA-100 in good cosmetics
  54. Cathode Followers and Clipping
  55. transformer secondary connections
  56. imp amp
  57. Information 6DJ8
  58. Smoothing Cap = Noise Source?
  59. peavey ultra 60 footswitch wiring diagram
  60. 6S19P budget SE.
  61. adding reverb to a PA head
  62. My 2 new latest Dynaco ST-70's
  63. help with KT88 / mikaels SE amp
  64. twin reverb 100 watt
  65. adding LEDs to amp head
  66. What Is Line Level????
  67. chokes, caps, and long distance relationships
  68. First foray into tubes!!
  69. Simple Hi-end 845 amplifier
  70. increased choke inductance - recommended?
  71. HELP PLEASE - with preamp design
  72. Alternative to James OPTs
  73. DIY preamp tube: Audio Research Reference 3???
  74. Crowhurst's Twin Coupled Amplifier
  75. 6lw6 tv sweep tube bias?
  76. 24V aikido build!
  77. magnavox tube radio
  78. New S5 L series kits
  79. Anyone has experience with Stranwood
  80. 6n6p amp
  81. DC Darling Amp Buzzing on both channels.
  82. 6SL7 EL34 300B amp
  83. I just installed Yeos (DIY Paradise) DC Blocker
  84. Measuring Cathode Current
  85. Need the Ogirin Circuit of Bruce Berman
  86. Input Choke Too Small
  87. Poodle gives clues to capacitor construction
  88. Would a line stage/preamp be beneficial? NEWBIE question
  89. 6p45c
  90. fanon pa amp schematic
  91. line stage confusion
  92. Hammond Transformer Secondary Connections
  93. Klimo Merlin LS Tube Power Supply
  94. OPT Design Assistante (EL84)
  95. Hum - can't find an answer by searching the forum
  96. Please critique my plans for a WE91 clone.
  97. Emission Labs 300B Mesh plate
  98. DRD Power Supply
  99. Octal Champ works - pls check design
  100. telefunken EL 34 audio tube
  101. Bias instability in Heathkit W-5M amp
  102. EL-34 instability in EICO HF-35 amp
  103. Russian paper in oil caps - any good?
  104. Matching Impedances
  105. Open-Source Audio Input Switch
  106. Phono pre amp RF problem
  107. Best CHEAP + best BEST current production EL34?
  108. New toy
  109. EL84 SEP schematic. Some questions.
  110. Referencing DC heaters to cathode
  111. Need advice on Val Audio amp with EL-34 Tubes
  112. Please help a newbie with PSU current requirement for Aikido linestage
  113. Loudspeaker noise from 300B
  114. Schematic for GU-50, EL34, 6J32P ???
  115. alternative for heater / B+ references
  116. need a little help from some tube Gurus!!!
  117. EF86 + SPICE = no noise contribution?
  118. 6n1 tube = 6n1p
  119. One channel softer than the other, humming and buzzing
  120. Parallel Output Transformers
  121. Distortion from heater sag?
  122. Testing 5842 / 417a
  123. RH ECL86 Amp: Dave?
  124. High gain pentodes
  125. Tube Matching and Push-Pull
  126. What constitutes a leaky Coupling capacitor?
  127. Question on Input Connections
  128. s5electronics tube amp kit damping factor
  129. 6L6s and cabinet selections HELP!!!!
  130. source of nickel + silicon steel laminations
  131. Explanation for this problem?
  132. turn off thump
  133. Pop from amp when turning off
  134. Big Paper in Oil Caps
  135. Valve noobie asks for help / advice
  136. Polypropylene vs electrolytic in Power supply
  137. 6S4P vs 5842
  138. Calibrating Your Hickok Tube Tester
  139. Which 2A3 ?
  140. New design: 12V push-pull tube amplifier
  141. hybrid power supply: diode bridge into diode tube
  142. heater reference to B+ and buzzing trafo
  143. Hum cancelling scheme?
  144. Run a transformer backwards?
  145. FIVRE RRCF info needed
  146. Siemens Valvo ED-8000
  147. 6J5 and 6F6 SE - enough gain for guitar?
  148. My last Zamir Aleph
  149. Questions about first tube PSU!
  150. Looking for site
  151. Heater voltage mismatch
  152. Contacting Pete Millet for 813 PSU?
  153. Suggestions for first tube project?
  154. Just Saying Howdy
  155. Wiring a tube rectifier PSU
  156. Looking for a small yet powerful pentode / dual triode?
  157. Earth Bus Wire - Where can I get it?
  158. Tube Amp Startup
  159. 45 amplifier
  160. Noob saying Hi...
  161. Maida regulator
  162. Sensitivity limiter in Bogen MX60a
  163. Just finished first amp
  164. 6080 / 6AS7G power amplifier
  165. Schematics
  166. General questions before finishing up ST-35 clone
  167. Will a 12AX7 sub. for 12DW7/7247?
  168. Deutsche Wurlitzer Lyric Jukebox?
  169. Made in China buyer beware...
  170. Variac to power-up Beveridge OTLs?
  171. Any ideas on how old this is?
  172. Philips Tube radio
  173. Improve Avel toroid in OTL amp
  174. tube pre amp mods in queensland, australia
  175. 6SL7GT pre-amp
  176. Aikido circuit question
  177. question
  178. Edcor OPT's w/ SimpleSE
  179. Please check this PSU
  180. met. MKP in oil capacitors for PSU?
  181. EH EL34's at +600V?
  182. The Infamous Kay 703C! - Help finding an output transformer?
  183. MOT's as output transformers?
  184. Grain oriented silicon steel core data needed
  185. Gibson reverb driver transformer
  186. PSUD II help
  187. Edcor In SE Guitar Amp
  188. Tube curves
  189. S-5 electronics amp kits
  190. up-to-date El Cheapo schematic
  191. unknown output trannie
  192. Help needed with KT88 Amp design
  193. Bogen MX60a
  194. AIKIDO - Low-volage with buffer version
  195. 6N6P cascode calculation
  196. 866a Min operating voltages
  197. new 6V6 amp
  198. Tube-based CCS- 0.2uF cap OK?
  199. DHT filament PSU: What would you do?
  200. PSU problem
  201. 811A se amp using a solid state driver
  202. ECC83 - Long Plate vs Short Plate
  203. Tube Matching
  204. Cascoded mu-follower
  205. DIY speaker choice for SE
  206. Output transformer wanted
  207. big valve traffo for guitar amp?
  208. Tube Tester
  209. 835 amp
  210. One 300B filament supply for stereo?
  211. Aikido Built At Last!!
  212. Question about amount of feedback to apply
  213. design help needed.
  214. LED in cathode
  215. Need help for Eico 1030 regulated power supply
  216. zinc chassis
  217. Anode Cap Question
  218. what pins to use solid rectifier for 5Y3
  219. New PSU for Aikido?
  220. tube anti-vibration mounting
  221. Border Patrol PSU, can anyone help?
  222. Aikido Line Stage
  223. LED Bias Modifications
  224. danelectro vibravox
  225. Standby switch for bridge rectified power supplies.
  226. Decoupling in Phono stages.
  227. easy one valve pre help
  228. Single-ended-series amp with a "1 winding" transformer
  229. Complementary Symmetry Output
  230. Help getting these d$&* Dynascan probes apart!
  231. Aikido output cap selector switch
  232. adding an "on" lamp to amp kit
  233. Why does 6BM8 have so high max plate voltage?
  234. B+ soft start
  235. Unison research
  236. photos of my creations
  237. First Time Project - Finished! Photos Attached
  238. Design parameters for SE OPTs'
  239. want to build a pentode driven drd 2a3!
  240. Passive Magnetic Preamp!
  241. Testing an E288CC (8223)
  242. Need expert help on presence control
  243. Value of output caps for Aikido - how low is too low?
  244. Very expensive WE106A pre-amp, any member had this??
  245. B+ with or without tubes?
  246. 1st Time Project - Spot the howler
  247. Tube flashes on tester... Bad ?
  248. Amp advice needed for a poor DIY er...
  249. DCR of primaries and secondaries of Hammond Transformer
  250. 801 amp with Power Drive

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