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  1. 6AQ7 - why so cheap???
  2. Grommes 260
  3. heathkit aa-81 mono blocks
  4. feedbackless interstage p-p kt88 amp
  5. Using Horizontal Output Tubes - Power Supply
  6. 6e5c
  7. Mr Liang 845 Sound :(
  8. Test pentode grids without a tester
  9. Info required : GAMMA VALVE AMPS..
  10. 6SN7 plate voltage, current and lifespan
  11. Clarification of floating heater supply
  12. Changed a cap and lost some bass...?
  13. 6P9/6AG7 Triode Amplifier
  14. Chokes Designed for Choke Input PSU's
  15. Power trafo...
  16. Any value to modding a UL OPT to CFBK?
  17. One guitar, multiple amps at once?
  18. Rogers Cadet III Advice & Opinions Needed
  19. DCG5/5000GS Valve
  20. Morgan Jones on Google Books
  21. CCS for 12B4 linestage
  22. 6j9p
  23. philips hf 303 amp
  24. DIY tube testing Curve Tracer
  25. Amplifier impedance and pot selection
  26. Tube rise time and slew rate
  27. What's your favourite sounding DIY/kit tube amp?
  28. How to convert a 220v Chinese amp to 110v for US use
  29. look for schematic of 12v preamp ???
  30. Bevois Valley and parallel push pull
  31. Amp Wiring Color Code
  32. Xindak 805 monos $4700/pr USD
  33. A new DHT power supply idea
  34. 852 tube
  35. Tube Matcher help needed, ala PassDIY
  36. What's the difference?
  37. Cathode Feedback How-To?
  38. Is Thier Away To Clear Up Distortion???
  39. How much feedback for PP penthode?
  40. To regulate or not to regulate
  41. Anyone used interstage transformers for a 300B?
  42. Hissing Sound in KT88 Amp
  43. Go black or go around?
  44. Triodes that would like a 10K a-a OPT?
  45. Yaqin mc10L
  46. Cycline3 on the 12AU7
  47. How Would You Change This Soildstate Circuit To Tube
  48. Using existing transformer winding to provide and additional supply
  49. Magnetic shields for transformers
  50. First DIY job: Dual Tube Recording Preamp
  51. James Transformers
  52. Audiopax Model 7
  53. Isis 3030 Monoblocks
  54. From diode to tube rectification in my Aikido
  55. Williamson KT77 Question
  56. mu followers --- current --- please help
  57. need tube schematic
  58. switch snubber for Aikido
  59. Pioneer Tube Schematics
  60. Question about "bloaty" bass with SET and KT88's
  61. Ultron 6v6GT
  62. low power OTLs
  63. 6H30 equivalents
  64. What Would You Do?
  65. k-502/k-12m vs. Model 1 pcl82
  66. Shunting Pot
  67. Suggested replacements for Chinese tubes
  68. What to do with these.....
  69. ECL82 PP "reference" amp
  70. Heater TX proximity
  71. Quick question on the PP-C1 amp
  72. SET "interstage coupler" for First Watt F4
  73. 811A amp Class A2
  74. TVC before Input Transformer?
  75. Point-to-Point, Pointers
  76. Triode recommendation
  77. Schmitt & CCS
  78. Simple DC Heater Supply
  79. Output transformers ? sound quality ?
  80. KT88 Minimum Mounting Distance
  81. LED bias indicator
  82. Standby Switch
  83. chinese tube amp
  84. Broskie OTL
  85. Connecting a single plate to multiple screens?
  86. voltage divider+Aikido
  87. Wiring PSU and Aikido PCB
  88. Mission 300b parallel single ended
  89. Vietnam tube amplifier festival
  90. learning design but need help
  91. tutorial software
  92. Fisher 500C troubleshooting
  93. triode pentodes
  94. Deriving Secondary Voltages
  95. Here's the W-5M schematics . . .
  96. Question for Heathkit W-5M owners
  97. Classic 16.0
  98. 100 Ohm loudspeaker
  99. Are Srpp's Any Good (please Help)
  100. Blasphemy, I'm sure
  101. Decware ZSLA buffer -- worth cloning?
  102. Pse El84
  103. 6S19P Push-Pull Amplifier
  104. Class B Triodes
  105. Need a serious PP driver stage
  106. laptop->tubes?
  107. cathode follower -- damping factor (HELP please)
  108. Interstage X-former identification
  109. Multi-turn pot?
  110. 6L6G and 6L6GB differences?
  111. 6AK6 low power tube amp finished
  112. 7 pin X
  113. Replacing KT88 with KT90 - Beginner's questions
  114. way to estimate choke current rating?
  115. attn: Montreal, QC, Canada, OPAMPS!
  116. Hiss but no hum...
  117. Cap size for Aikido heater PS?
  118. Heathkit W-5M
  119. NTK " Teds tube mic"
  120. Making a Bias Voltage from B+ tape?
  121. Reg. Heater Circuit
  122. 6AG7 UL Curves
  123. Best SE output transformer for 300b - shootout
  124. Single ended amp from class A push-pull
  125. Yaqin MC-100b schematic diagram
  126. 12/24 volt tubes
  127. Favorite noval hi gain dual triode?
  128. AVO MKIII Tester Operation?
  129. Aikido users- anyone NOT have turn-off thump?
  130. Optimum value for volume control?
  131. VAL MPS mark II preamp gain reduction
  132. It is asked drawing 100 or 200 watts amplifier
  133. Mystery ST-70 Driver Board
  134. First Timer needs help
  135. Help. Bogen m60a
  136. grid-grounded preamp sound
  137. Rectifier switching / choke ringing noise
  138. Single Ended Amp Design -- Help Needed
  139. tube current
  140. Needed : ECF83, can anyone help ??
  141. Problem with a solid state CCS
  142. Looking for low-ish rp single triode
  143. Cleaning beverage out of inside tube amp
  144. Aikido problems!!!
  145. Another Power Supply Question
  146. 2a3 output transformers....
  147. yet another 6em7 amp
  148. zenith amp
  149. 6AG7 Amplifier
  150. Valve Power Supplies?
  151. tube tracer article
  152. PCB design techniques for Tube Amps
  153. Adjectives for tube sound!
  154. Question about Amperex tubes and a preamp
  155. I want to build a preamp for my dad.. thoughts?
  156. Constant Current DC Heater Supply
  157. Weekend Fun with Tubes - Guitar Preamp
  158. Which valves for MF CD-T
  159. 6C33C-EB / 6C33C-EV extended life ?
  160. Yamamoto A-08S RCA 45 tube amplifier original schematic
  161. Audiovalve RKV schematic (hybrid headphones amp)
  162. Music Angel EL34 XDSE
  163. Dynaco PAS Preamp Tone Controls
  164. build 805 or 845 se for ~$1000
  165. Built a quick 26 pre yesterday..nice so far,,
  166. An UL preamp idea.
  167. 6BX7 PSpice Model?
  168. using 24G and 3B28 in an od ball amp.......
  169. Tube Line Buffer
  170. Please help me build an amp for my father
  171. Why is my phono amp fatiguing?
  172. Heater current drawn by 8416
  173. want dead counterpoint SA100 SA-100 in good cosmetics
  174. Cathode Followers and Clipping
  175. transformer secondary connections
  176. imp amp
  177. Information 6DJ8
  178. Smoothing Cap = Noise Source?
  179. peavey ultra 60 footswitch wiring diagram
  180. 6S19P budget SE.
  181. adding reverb to a PA head
  182. My 2 new latest Dynaco ST-70's
  183. help with KT88 / mikaels SE amp
  184. twin reverb 100 watt
  185. adding LEDs to amp head
  186. What Is Line Level????
  187. chokes, caps, and long distance relationships
  188. First foray into tubes!!
  189. Simple Hi-end 845 amplifier
  190. increased choke inductance - recommended?
  191. HELP PLEASE - with preamp design
  192. Alternative to James OPTs
  193. DIY preamp tube: Audio Research Reference 3???
  194. Crowhurst's Twin Coupled Amplifier
  195. 6lw6 tv sweep tube bias?
  196. 24V aikido build!
  197. magnavox tube radio
  198. New S5 L series kits
  199. Anyone has experience with Stranwood
  200. 6n6p amp
  201. DC Darling Amp Buzzing on both channels.
  202. 6SL7 EL34 300B amp
  203. I just installed Yeos (DIY Paradise) DC Blocker
  204. Measuring Cathode Current
  205. Need the Ogirin Circuit of Bruce Berman
  206. Input Choke Too Small
  207. Poodle gives clues to capacitor construction
  208. Would a line stage/preamp be beneficial? NEWBIE question
  209. 6p45c
  210. fanon pa amp schematic
  211. line stage confusion
  212. Hammond Transformer Secondary Connections
  213. Klimo Merlin LS Tube Power Supply
  214. OPT Design Assistante (EL84)
  215. Hum - can't find an answer by searching the forum
  216. Please critique my plans for a WE91 clone.
  217. Emission Labs 300B Mesh plate
  218. DRD Power Supply
  219. Octal Champ works - pls check design
  220. telefunken EL 34 audio tube
  221. Bias instability in Heathkit W-5M amp
  222. EL-34 instability in EICO HF-35 amp
  223. Russian paper in oil caps - any good?
  224. Matching Impedances
  225. Open-Source Audio Input Switch
  226. Phono pre amp RF problem
  227. Best CHEAP + best BEST current production EL34?
  228. New toy
  229. EL84 SEP schematic. Some questions.
  230. Referencing DC heaters to cathode
  231. Need advice on Val Audio amp with EL-34 Tubes
  232. Please help a newbie with PSU current requirement for Aikido linestage
  233. Loudspeaker noise from 300B
  234. Schematic for GU-50, EL34, 6J32P ???
  235. alternative for heater / B+ references
  236. need a little help from some tube Gurus!!!
  237. EF86 + SPICE = no noise contribution?
  238. 6n1 tube = 6n1p
  239. One channel softer than the other, humming and buzzing
  240. Parallel Output Transformers
  241. Distortion from heater sag?
  242. Testing 5842 / 417a
  243. RH ECL86 Amp: Dave?
  244. High gain pentodes
  245. Tube Matching and Push-Pull
  246. What constitutes a leaky Coupling capacitor?
  247. Question on Input Connections
  248. s5electronics tube amp kit damping factor
  249. 6L6s and cabinet selections HELP!!!!
  250. source of nickel + silicon steel laminations

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