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  1. CCS for 12B4 linestage
  2. 6j9p
  3. philips hf 303 amp
  4. DIY tube testing Curve Tracer
  5. Amplifier impedance and pot selection
  6. Tube rise time and slew rate
  7. What's your favourite sounding DIY/kit tube amp?
  8. How to convert a 220v Chinese amp to 110v for US use
  9. look for schematic of 12v preamp ???
  10. Bevois Valley and parallel push pull
  11. Amp Wiring Color Code
  12. Xindak 805 monos $4700/pr USD
  13. A new DHT power supply idea
  14. 852 tube
  15. Tube Matcher help needed, ala PassDIY
  16. What's the difference?
  17. Cathode Feedback How-To?
  18. Is Thier Away To Clear Up Distortion???
  19. How much feedback for PP penthode?
  20. To regulate or not to regulate
  21. Anyone used interstage transformers for a 300B?
  22. Hissing Sound in KT88 Amp
  23. Go black or go around?
  24. Triodes that would like a 10K a-a OPT?
  25. Yaqin mc10L
  26. Cycline3 on the 12AU7
  27. How Would You Change This Soildstate Circuit To Tube
  28. Using existing transformer winding to provide and additional supply
  29. Magnetic shields for transformers
  30. First DIY job: Dual Tube Recording Preamp
  31. James Transformers
  32. Audiopax Model 7
  33. Isis 3030 Monoblocks
  34. From diode to tube rectification in my Aikido
  35. Williamson KT77 Question
  36. mu followers --- current --- please help
  37. need tube schematic
  38. switch snubber for Aikido
  39. Pioneer Tube Schematics
  40. Question about "bloaty" bass with SET and KT88's
  41. Ultron 6v6GT
  42. low power OTLs
  43. 6H30 equivalents
  44. What Would You Do?
  45. k-502/k-12m vs. Model 1 pcl82
  46. Shunting Pot
  47. Suggested replacements for Chinese tubes
  48. What to do with these.....
  49. ECL82 PP "reference" amp
  50. Heater TX proximity
  51. Quick question on the PP-C1 amp
  52. SET "interstage coupler" for First Watt F4
  53. 811A amp Class A2
  54. TVC before Input Transformer?
  55. Point-to-Point, Pointers
  56. Triode recommendation
  57. Schmitt & CCS
  58. Simple DC Heater Supply
  59. Output transformers ? sound quality ?
  60. KT88 Minimum Mounting Distance
  61. LED bias indicator
  62. Standby Switch
  63. chinese tube amp
  64. Broskie OTL
  65. Connecting a single plate to multiple screens?
  66. voltage divider+Aikido
  67. Wiring PSU and Aikido PCB
  68. Mission 300b parallel single ended
  69. Vietnam tube amplifier festival
  70. learning design but need help
  71. tutorial software
  72. Fisher 500C troubleshooting
  73. triode pentodes
  74. Deriving Secondary Voltages
  75. Here's the W-5M schematics . . .
  76. Question for Heathkit W-5M owners
  77. Classic 16.0
  78. 100 Ohm loudspeaker
  79. Are Srpp's Any Good (please Help)
  80. Blasphemy, I'm sure
  81. Decware ZSLA buffer -- worth cloning?
  82. Pse El84
  83. 6S19P Push-Pull Amplifier
  84. Class B Triodes
  85. Need a serious PP driver stage
  86. laptop->tubes?
  87. cathode follower -- damping factor (HELP please)
  88. Interstage X-former identification
  89. Multi-turn pot?
  90. 6L6G and 6L6GB differences?
  91. 6AK6 low power tube amp finished
  92. 7 pin X
  93. Replacing KT88 with KT90 - Beginner's questions
  94. way to estimate choke current rating?
  95. attn: Montreal, QC, Canada, OPAMPS!
  96. Hiss but no hum...
  97. Cap size for Aikido heater PS?
  98. Heathkit W-5M
  99. NTK " Teds tube mic"
  100. Making a Bias Voltage from B+ tap?
  101. Reg. Heater Circuit
  102. 6AG7 UL Curves
  103. Best SE output transformer for 300b - shootout
  104. Single ended amp from class A push-pull
  105. Yaqin MC-100b schematic diagram
  106. 12/24 volt tubes
  107. Favorite noval hi gain dual triode?
  108. Aikido users- anyone NOT have turn-off thump?
  109. Optimum value for volume control?
  110. VAL MPS mark II preamp gain reduction
  111. It is asked drawing 100 or 200 watts amplifier
  112. Mystery ST-70 Driver Board
  113. First Timer needs help
  114. Help. Bogen m60a
  115. grid-grounded preamp sound
  116. Rectifier switching / choke ringing noise
  117. Single Ended Amp Design -- Help Needed
  118. tube current
  119. Needed : ECF83, can anyone help ??
  120. Problem with a solid state CCS
  121. Looking for low-ish rp single triode
  122. Cleaning beverage out of inside tube amp
  123. Aikido problems!!!
  124. Another Power Supply Question
  125. 2a3 output transformers....
  126. yet another 6em7 amp
  127. zenith amp
  128. 6AG7 Amplifier
  129. Valve Power Supplies?
  130. tube tracer article
  131. PCB design techniques for Tube Amps
  132. Adjectives for tube sound!
  133. Question about Amperex tubes and a preamp
  134. I want to build a preamp for my dad.. thoughts?
  135. Constant Current DC Heater Supply
  136. Which valves for MF CD-T
  137. 6C33C-EB / 6C33C-EV extended life ?
  138. Yamamoto A-08S RCA 45 tube amplifier original schematic
  139. Audiovalve RKV schematic (hybrid headphones amp)
  140. Music Angel EL34 XDSE
  141. Dynaco PAS Preamp Tone Controls
  142. build 805 or 845 se for ~$1000
  143. Built a quick 26 pre yesterday..nice so far,,
  144. An UL preamp idea.
  145. 6BX7 PSpice Model?
  146. using 24G and 3B28 in an od ball amp.......
  147. Tube Line Buffer
  148. Please help me build an amp for my father
  149. Why is my phono amp fatiguing?
  150. Heater current drawn by 8416
  151. want dead counterpoint SA100 SA-100 in good cosmetics
  152. Cathode Followers and Clipping
  153. transformer secondary connections
  154. imp amp
  155. Information 6DJ8
  156. Smoothing Cap = Noise Source?
  157. 6S19P budget SE.
  158. My 2 new latest Dynaco ST-70's
  159. help with KT88 / mikaels SE amp
  160. adding LEDs to amp head
  161. What Is Line Level????
  162. chokes, caps, and long distance relationships
  163. First foray into tubes!!
  164. Simple Hi-end 845 amplifier
  165. increased choke inductance - recommended?
  166. HELP PLEASE - with preamp design
  167. Alternative to James OPTs
  168. DIY preamp tube: Audio Research Reference 3???
  169. Crowhurst's Twin Coupled Amplifier
  170. 6lw6 tv sweep tube bias?
  171. 24V aikido build!
  172. magnavox tube radio
  173. New S5 L series kits
  174. Anyone has experience with Stranwood
  175. 6n6p amp
  176. DC Darling Amp Buzzing on both channels.
  177. 6SL7 EL34 300B amp
  178. I just installed Yeos (DIY Paradise) DC Blocker
  179. Measuring Cathode Current
  180. Need the Ogirin Circuit of Bruce Berman
  181. Input Choke Too Small
  182. Would a line stage/preamp be beneficial? NEWBIE question
  183. 6p45c
  184. fanon pa amp schematic
  185. line stage confusion
  186. Hammond Transformer Secondary Connections
  187. Klimo Merlin LS Tube Power Supply
  188. OPT Design Assistante (EL84)
  189. Hum - can't find an answer by searching the forum
  190. Please critique my plans for a WE91 clone.
  191. Emission Labs 300B Mesh plate
  192. DRD Power Supply
  193. Octal Champ works - pls check design
  194. telefunken EL 34 audio tube
  195. Bias instability in Heathkit W-5M amp
  196. EL-34 instability in EICO HF-35 amp
  197. Matching Impedances
  198. Open-Source Audio Input Switch
  199. Phono pre amp RF problem
  200. Best CHEAP + best BEST current production EL34?
  201. New toy
  202. EL84 SEP schematic. Some questions.
  203. Referencing DC heaters to cathode
  204. Need advice on Val Audio amp with EL-34 Tubes
  205. Please help a newbie with PSU current requirement for Aikido linestage
  206. Loudspeaker noise from 300B
  207. Schematic for GU-50, EL34, 6J32P ???
  208. alternative for heater / B+ references
  209. need a little help from some tube Gurus!!!
  210. EF86 + SPICE = no noise contribution?
  211. 6n1 tube = 6n1p
  212. One channel softer than the other, humming and buzzing
  213. Parallel Output Transformers
  214. Distortion from heater sag?
  215. Testing 5842 / 417a
  216. RH ECL86 Amp: Dave?
  217. High gain pentodes
  218. Tube Matching and Push-Pull
  219. Question on Input Connections
  220. s5electronics tube amp kit damping factor
  221. 6L6s and cabinet selections HELP!!!!
  222. source of nickel + silicon steel laminations
  223. Explanation for this problem?
  224. turn off thump
  225. Pop from amp when turning off
  226. Valve noobie asks for help / advice
  227. Polypropylene vs electrolytic in Power supply
  228. 6S4P vs 5842
  229. Which 2A3 ?
  230. New design: 12V push-pull tube amplifier
  231. hybrid power supply: diode bridge into diode tube
  232. heater reference to B+ and buzzing trafo
  233. Hum cancelling scheme?
  234. Run a transformer backwards?
  235. FIVRE RRCF info needed
  236. Siemens Valvo ED-8000
  237. My last Zamir Aleph
  238. Questions about first tube PSU!
  239. Looking for site
  240. Heater voltage mismatch
  241. Contacting Pete Millet for 813 PSU?
  242. Suggestions for first tube project?
  243. Just Saying Howdy
  244. Wiring a tube rectifier PSU
  245. Looking for a small yet powerful pentode / dual triode?
  246. Earth Bus Wire - Where can I get it?
  247. Tube Amp Startup
  248. 45 amplifier
  249. Noob saying Hi...
  250. Maida regulator

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