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  1. First Timer needs help
  2. Help. Bogen m60a
  3. grid-grounded preamp sound
  4. Rectifier switching / choke ringing noise
  5. Single Ended Amp Design -- Help Needed
  6. tube current
  7. Needed : ECF83, can anyone help ??
  8. Problem with a solid state CCS
  9. Looking for low-ish rp single triode
  10. Cleaning beverage out of inside tube amp
  11. Aikido problems!!!
  12. Another Power Supply Question
  13. 2a3 output transformers....
  14. yet another 6em7 amp
  15. zenith amp
  16. 6AG7 Amplifier
  17. Valve Power Supplies?
  18. tube tracer article
  19. PCB design techniques for Tube Amps
  20. Adjectives for tube sound!
  21. Question about Amperex tubes and a preamp
  22. I want to build a preamp for my dad.. thoughts?
  23. Constant Current DC Heater Supply
  24. Weekend Fun with Tubes - Guitar Preamp
  25. Which valves for MF CD-T
  26. 6C33C-EB / 6C33C-EV extended life ?
  27. Yamamoto A-08S RCA 45 tube amplifier original schematic
  28. Audiovalve RKV schematic (hybrid headphones amp)
  29. Music Angel EL34 XDSE
  30. Dynaco PAS Preamp Tone Controls
  31. build 805 or 845 se for ~$1000
  32. Built a quick 26 pre yesterday..nice so far,,
  33. An UL preamp idea.
  34. 6BX7 PSpice Model?
  35. using 24G and 3B28 in an od ball amp.......
  36. Tube Line Buffer
  37. Please help me build an amp for my father
  38. Why is my phono amp fatiguing?
  39. Heater current drawn by 8416
  40. want dead counterpoint SA100 SA-100 in good cosmetics
  41. Cathode Followers and Clipping
  42. transformer secondary connections
  43. imp amp
  44. Information 6DJ8
  45. Smoothing Cap = Noise Source?
  46. peavey ultra 60 footswitch wiring diagram
  47. 6S19P budget SE.
  48. adding reverb to a PA head
  49. My 2 new latest Dynaco ST-70's
  50. help with KT88 / mikaels SE amp
  51. twin reverb 100 watt
  52. adding LEDs to amp head
  53. What Is Line Level????
  54. chokes, caps, and long distance relationships
  55. First foray into tubes!!
  56. Simple Hi-end 845 amplifier
  57. increased choke inductance - recommended?
  58. HELP PLEASE - with preamp design
  59. Alternative to James OPTs
  60. DIY preamp tube: Audio Research Reference 3???
  61. Crowhurst's Twin Coupled Amplifier
  62. 6lw6 tv sweep tube bias?
  63. 24V aikido build!
  64. magnavox tube radio
  65. New S5 L series kits
  66. Anyone has experience with Stranwood
  67. 6n6p amp
  68. DC Darling Amp Buzzing on both channels.
  69. 6SL7 EL34 300B amp
  70. I just installed Yeos (DIY Paradise) DC Blocker
  71. Measuring Cathode Current
  72. Need the Ogirin Circuit of Bruce Berman
  73. Input Choke Too Small
  74. Poodle gives clues to capacitor construction
  75. Would a line stage/preamp be beneficial? NEWBIE question
  76. 6p45c
  77. fanon pa amp schematic
  78. line stage confusion
  79. Hammond Transformer Secondary Connections
  80. Klimo Merlin LS Tube Power Supply
  81. OPT Design Assistante (EL84)
  82. Hum - can't find an answer by searching the forum
  83. Please critique my plans for a WE91 clone.
  84. Emission Labs 300B Mesh plate
  85. DRD Power Supply
  86. Octal Champ works - pls check design
  87. telefunken EL 34 audio tube
  88. Bias instability in Heathkit W-5M amp
  89. EL-34 instability in EICO HF-35 amp
  90. Russian paper in oil caps - any good?
  91. Matching Impedances
  92. Open-Source Audio Input Switch
  93. Phono pre amp RF problem
  94. Best CHEAP + best BEST current production EL34?
  95. New toy
  96. EL84 SEP schematic. Some questions.
  97. Referencing DC heaters to cathode
  98. Need advice on Val Audio amp with EL-34 Tubes
  99. Please help a newbie with PSU current requirement for Aikido linestage
  100. Loudspeaker noise from 300B
  101. Schematic for GU-50, EL34, 6J32P ???
  102. alternative for heater / B+ references
  103. need a little help from some tube Gurus!!!
  104. EF86 + SPICE = no noise contribution?
  105. 6n1 tube = 6n1p
  106. One channel softer than the other, humming and buzzing
  107. Parallel Output Transformers
  108. Distortion from heater sag?
  109. Testing 5842 / 417a
  110. RH ECL86 Amp: Dave?
  111. High gain pentodes
  112. Tube Matching and Push-Pull
  113. What constitutes a leaky Coupling capacitor?
  114. Question on Input Connections
  115. s5electronics tube amp kit damping factor
  116. 6L6s and cabinet selections HELP!!!!
  117. source of nickel + silicon steel laminations
  118. Explanation for this problem?
  119. turn off thump
  120. Pop from amp when turning off
  121. Big Paper in Oil Caps
  122. Valve noobie asks for help / advice
  123. Polypropylene vs electrolytic in Power supply
  124. 6S4P vs 5842
  125. Calibrating Your Hickok Tube Tester
  126. Which 2A3 ?
  127. New design: 12V push-pull tube amplifier
  128. hybrid power supply: diode bridge into diode tube
  129. heater reference to B+ and buzzing trafo
  130. Hum cancelling scheme?
  131. Run a transformer backwards?
  132. FIVRE RRCF info needed
  133. Siemens Valvo ED-8000
  134. 6J5 and 6F6 SE - enough gain for guitar?
  135. My last Zamir Aleph
  136. Questions about first tube PSU!
  137. Looking for site
  138. Heater voltage mismatch
  139. Contacting Pete Millet for 813 PSU?
  140. Suggestions for first tube project?
  141. Just Saying Howdy
  142. Wiring a tube rectifier PSU
  143. Looking for a small yet powerful pentode / dual triode?
  144. Earth Bus Wire - Where can I get it?
  145. Tube Amp Startup
  146. 45 amplifier
  147. Noob saying Hi...
  148. Maida regulator
  149. Sensitivity limiter in Bogen MX60a
  150. Just finished first amp
  151. 6080 / 6AS7G power amplifier
  152. Schematics
  153. General questions before finishing up ST-35 clone
  154. Will a 12AX7 sub. for 12DW7/7247?
  155. Deutsche Wurlitzer Lyric Jukebox?
  156. Made in China buyer beware...
  157. Variac to power-up Beveridge OTLs?
  158. Any ideas on how old this is?
  159. Philips Tube radio
  160. Improve Avel toroid in OTL amp
  161. tube pre amp mods in queensland, australia
  162. 6SL7GT pre-amp
  163. Aikido circuit question
  164. question
  165. Edcor OPT's w/ SimpleSE
  166. Please check this PSU
  167. met. MKP in oil capacitors for PSU?
  168. EH EL34's at +600V?
  169. The Infamous Kay 703C! - Help finding an output transformer?
  170. MOT's as output transformers?
  171. Grain oriented silicon steel core data needed
  172. Gibson reverb driver transformer
  173. PSUD II help
  174. Edcor In SE Guitar Amp
  175. Tube curves
  176. S-5 electronics amp kits
  177. up-to-date El Cheapo schematic
  178. unknown output trannie
  179. Help needed with KT88 Amp design
  180. Bogen MX60a
  181. AIKIDO - Low-volage with buffer version
  182. 6N6P cascode calculation
  183. 866a Min operating voltages
  184. new 6V6 amp
  185. Tube-based CCS- 0.2uF cap OK?
  186. DHT filament PSU: What would you do?
  187. PSU problem
  188. 811A se amp using a solid state driver
  189. ECC83 - Long Plate vs Short Plate
  190. Tube Matching
  191. Cascoded mu-follower
  192. DIY speaker choice for SE
  193. Output transformer wanted
  194. big valve traffo for guitar amp?
  195. Tube Tester
  196. 835 amp
  197. One 300B filament supply for stereo?
  198. Aikido Built At Last!!
  199. Question about amount of feedback to apply
  200. design help needed.
  201. LED in cathode
  202. Need help for Eico 1030 regulated power supply
  203. zinc chassis
  204. Anode Cap Question
  205. what pins to use solid rectifier for 5Y3
  206. New PSU for Aikido?
  207. tube anti-vibration mounting
  208. Border Patrol PSU, can anyone help?
  209. Aikido Line Stage
  210. LED Bias Modifications
  211. danelectro vibravox
  212. Standby switch for bridge rectified power supplies.
  213. Decoupling in Phono stages.
  214. easy one valve pre help
  215. Single-ended-series amp with a "1 winding" transformer
  216. Complementary Symmetry Output
  217. Help getting these d$&* Dynascan probes apart!
  218. Aikido output cap selector switch
  219. adding an "on" lamp to amp kit
  220. Why does 6BM8 have so high max plate voltage?
  221. B+ soft start
  222. Unison research
  223. photos of my creations
  224. First Time Project - Finished! Photos Attached
  225. Design parameters for SE OPTs'
  226. want to build a pentode driven drd 2a3!
  227. Passive Magnetic Preamp!
  228. Testing an E288CC (8223)
  229. Need expert help on presence control
  230. Value of output caps for Aikido - how low is too low?
  231. Very expensive WE106A pre-amp, any member had this??
  232. B+ with or without tubes?
  233. 1st Time Project - Spot the howler
  234. Tube flashes on tester... Bad ?
  235. Amp advice needed for a poor DIY er...
  236. DCR of primaries and secondaries of Hammond Transformer
  237. 801 amp with Power Drive
  238. Where did this come from?
  239. 6N7S's PPP Class A
  240. your opinion needed.......
  241. ST-70 strangeness
  242. SS preamp w/ tube amp
  243. pri. impedance vs. sek. impedance
  244. TubeLab SimpleSe and speaker efficiency
  245. Question about speaker transformer
  246. How to read Russian Date Codes
  247. 300B Amp on ebay
  248. Would a 396A or 2C51 drive a 45?
  249. PSUD2 Q on regulator
  250. My last design

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