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  1. Choke identity
  2. spotted this on ebay - 700w triodes anyone?
  3. HELP!!! for tube lovers
  4. How do you properly ground a Tamura OPT?
  5. Akihabara shopping
  6. Might be interested in this distortion thread
  7. PSE Active Loaded 12B4A anyone?
  8. Set 6080/6as7
  9. solid state just isn't doing it for me!!
  10. Where can I use this tubes
  11. Interesting math conundrum.
  12. schematic from this amp 45/717a/5u4..
  13. Strange Tube
  14. power supply help!!!!
  15. se tubeamp with px4
  16. Fixed bias PP questions
  17. Identifying Eico transformers
  18. metal shield
  19. why multi pins ?
  20. 2A3 PSE 'Arcadia' by SJS, or sorta
  21. John Swenson's (In my eyes revolutionary) preamp!
  22. tube opamps
  23. Help please with rare tube cd player
  24. OT impedance problem
  25. Amperex 6DJ8
  26. tiny amp
  27. 6C33 Internal Impedance (rp)?
  28. increasing o/p impedance to match IT??
  29. Grundig TK-60 Reel to Reel Questions
  30. Michaelson and Austin Oddysee
  31. 6gk6 tubes
  32. Anyone know anything about a 6AV5GA?
  33. A safe (?) DC coupled amp
  34. amp in trouble
  35. how to calculate lower operating point?
  36. Anyone on the tube forum ever heard a Bride Of Zen preamp?
  37. Audio Innovations 800 mk1
  38. Field of Dreams (a pair of FRT502 modulators)
  39. cathode follower
  40. ECC808- what is it more like?
  41. Help needed to find these rare values!
  42. New PP amp just completed - a few unusual features (long)
  43. MKP VS Electrolyte
  44. is 5mA too low???
  45. Dynaco FM3 220v-120v
  46. does plate current/voltage effect tube sound????
  47. Any opinions on the ECC81?
  48. #26 line stage help
  49. coupling caps? RTX vs Jupiter wax
  50. MC275 Hum Conundrum
  51. We91a
  52. Is 50 degrees C too hot?
  53. Using LEDs to bias grid voltage?
  54. DIY Hybride amplifiers
  55. wa i popped a tube lol
  56. 6C33C substitute
  57. Resistor popped...need help for replacement in Yaqin amp
  58. Check this eye candy out....
  59. Russian 5U4GB
  60. simple phono preamp circuit needed
  61. Black gate PS capacitors
  62. amp troubles
  63. Instruments Of Amplification - DIY
  64. my EL84 pre-amp with schematic
  65. Hammond AO29 to guitar amp?
  66. Radical (insane) PSU ideas
  67. First Tube Amp Considerations...
  68. hardcore tube night light?
  69. Frankenstein tube amp
  70. Can I use this tube?
  71. help for DHT bias in PP
  72. Multiple projects
  73. recommend operating point for EL84?
  74. First time builder, need advice.
  75. Tube Depot...
  76. schematics
  77. BOGEN MX60A Schematic
  78. Help with 1626 PSE Amp needed
  79. OTL question.
  80. diy tube amp
  81. Load line for CF
  82. DIY Vacuum tube amp
  83. Hammond or James OPT for SE 300B ?
  84. PSE 6550 schematic needed
  85. Schematic for Siemens "Table" Amplifier
  86. power supply for 6922 mu follower
  87. Dead simple tube circuit
  88. Any info on a Musical Fidelity X-Pre?
  89. Autoformer CF amp
  90. 2a3 or otl on an fullrange coral
  91. My New Project Completed
  92. SE el84
  93. Many thanks!
  94. Switching power supply & filament
  95. tube phono amp req'd
  96. Had a strange problem today...
  97. wsw siemens ultralinear 815 410 G !!?!
  98. Bottlehead Gear
  99. Amp, Stange temporary buzz, what is that?
  100. 2a3 schematic
  101. NEWBIE needs help-static in one channel of preamp
  102. Vintage speaker screw outs to 1/4" plug
  103. Flashing EL34
  104. Sovtek 2A3 tolerances / defected tube?
  105. Massive Parallel Operating
  106. filter circuit for 866a
  107. reasonable powered simple amp
  108. 6c19pi ?
  109. S5 Electronics 139 $ tube amp
  110. 12AU7 or 12AT7 instead of 12AX7 ?
  111. Tube Pre-Amp < $200
  112. Modification of 2A3 SE Circuit
  113. beta followers
  114. Q: Stereo Amp / Dual PS Chokes
  115. using Mosfets as diode in PS
  116. Sonic Frontiers Power 2SE
  117. Curcio daniel
  118. Ecc89 / Ecc189
  119. Magnavox
  120. Tube Preamp 'Clone' PCB copys on ebay (Marantz, McIntosh, etc)
  121. tube rectifier life expectancy
  122. Metal VS Glass
  123. does anybody know this transfo?
  124. need help finding tube make
  125. VTL deluxe 300 amps - adjustment question
  126. Building Marshall Plexi
  127. help converting conrad johnson MV-55 into triode!
  128. Does more tubes = more filter capacitors?
  129. 6V6 GT, Do they worth playing with them ??
  130. 12ax7 > 6sn7 > 300b
  131. calculating NFB dB
  132. PCL806 is equivalen to PCL86?
  133. anti digitalizing process
  134. Telefunken?
  135. Bogen MX30A
  136. base for amp
  137. Unbalanced - Balanced Tube Preamplifier wanted
  138. rusty iron- need help :)
  139. A new/old CCS?
  140. Rogers Cadet III - balance control
  141. Anyone tried Van Alstine's OmegaStar Bridge?
  142. Plasma/ion tweeters
  143. PP 6B4G stereo amp filament question
  144. tube tone control?
  145. trio amp up in smoke-ya really up
  146. Ideas for SE amp with this tube
  147. regulated PS - with Zener diode
  148. Filament voltage of PP2A3
  149. Dennis Boyle, Alliance Audio
  150. How do I replace this 40+ year old selenium rectifier?
  151. please advise on operating point of a 5687
  152. Output Transformer Question
  153. Stepped attenuator
  154. PP2A3 amp options
  155. Need advice: Want to learn Vacuum tubes
  156. AVO CT-160 --- Help
  157. Needed schematic....
  158. Az1 mounted on wood!
  159. Dynaco A450 specs
  160. Ecc186= SQ Ecc82
  161. tube amp kit on 230 v???
  162. some tubes
  163. ppp el84 fixed bias schematics
  164. Tube buffered NIGC trafo thoughs?
  165. driver stage
  166. PS cap placement/type
  167. Vintage OPT
  168. simple, single-ended project
  169. 6sn7 - 6bx7 - sv811-3 amp
  170. I look for a correct driver stage
  171. PCB tubes amp?
  172. XLR to 1/4" TRS?
  173. Umbilical Connector Suggestions
  174. Good Inexpensive Starter Amp Kit
  175. tube rectified preamp schematic
  176. oxygen free interconnects
  177. how to calculate feedback resistor
  178. Topaz Isolation Tranny
  179. 4E27A monster se amp??
  180. 6V6 Parafeed?
  181. Old Tranny Potting Material
  182. Brimar ECC81
  183. PCB mounting B7G sockets
  184. Directly heated cathodes, but why?
  185. SET kit for newbie
  186. High Power 805 Triode based amplifier
  187. DigitalSignalProcessing -&gt; future?
  188. 5v Damper Diode?
  189. Tubes in Class D amplifiers
  190. Universal power supply UIP-1 from former USSR schematics
  191. Building a fender twin reverb in the UK
  192. First project for Proac loudspeakers
  193. transformers
  194. cathode battery bias questions
  195. tube amp project
  196. AN DacKit 1.2 Upgrade Ideas
  197. What are the requirements for driving a 300B?
  198. 900v. 100ma. Power supply for 813 tube amplifier
  199. Chassis Internal Height / Pot Clearance
  200. Bogen help
  201. Tube tester questions
  202. 211 VT-4C Good Simple SE Schematic
  203. mosfet in regulated PS.
  204. Hammond Transformer in Toronto
  205. 6n30pi plate resistance ?
  206. balanced input stage
  207. A better triode strap?
  208. Chinese new 845
  209. what tube manufacture of 6550??
  210. Low frequency noise in a 12B4 preamp
  211. Difference between CK6528 and 6528A ?
  212. 6L6 help needed
  213. Hawksford style error correcting output
  214. SE UL OT - primary wired in reverse
  215. tube bias pot question
  216. Transformer supplier in Australia
  217. Newb here
  218. Anyone familiar with James output transformers?
  219. What Limits Freqency response in a simple tube amp like the zen?
  220. Grid driven (ETM) KT88 SE amp design - final works on paper
  221. Sansui 1000 outputs?
  222. The overlooked is often cheaper
  223. Fender 6L6 Amp... HELP!!!
  224. Tube amp design characteristics?
  225. ecc40 or 76 as driver for 2A3
  226. toroids on top of each other ?
  227. Out Of Order
  228. Pinging JAX (Sweden)
  229. Common Cathode 6922 output impedance?
  230. Blue Velvet Preamp
  231. Has anyone got any plans for a car amp?
  232. Tube Radio Kit
  233. New Tube Porn!!
  234. Need someone to host my "TUBE PORN" images.
  235. Trying to understand preamp schematic...
  236. 6C33C schematic
  237. We have liftoff!!!! Houston, all systems are go!
  238. Dynaco ST70
  239. Is Tesla still going?
  240. yet another 12b4a
  241. Tubes load resistance and output trans impedance
  242. Antique schematic help please.
  243. 12b4a wiring question
  244. $1 AMP find
  245. Heater winding load question.
  246. Direct Coupling Modulated Bias (SET)
  247. Amp with 6c33
  248. Ideas for amp rebuild...
  249. simple tube amp
  250. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?

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