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  1. Metal VS Glass
  2. does anybody know this transfo?
  3. need help finding tube make
  4. VTL deluxe 300 amps - adjustment question
  5. help converting conrad johnson MV-55 into triode!
  6. Does more tubes = more filter capacitors?
  7. 6V6 GT, Do they worth playing with them ??
  8. 12ax7 > 6sn7 > 300b
  9. calculating NFB dB
  10. PCL806 is equivalen to PCL86?
  11. anti digitalizing process
  12. Telefunken?
  13. Bogen MX30A
  14. base for amp
  15. Unbalanced - Balanced Tube Preamplifier wanted
  16. rusty iron- need help :)
  17. A new/old CCS?
  18. Rogers Cadet III - balance control
  19. Anyone tried Van Alstine's OmegaStar Bridge?
  20. Plasma/ion tweeters
  21. PP 6B4G stereo amp filament question
  22. tube tone control?
  23. trio amp up in smoke-ya really up
  24. Ideas for SE amp with this tube
  25. regulated PS - with Zener diode
  26. Filament voltage of PP2A3
  27. Dennis Boyle, Alliance Audio
  28. How do I replace this 40+ year old selenium rectifier?
  29. please advise on operating point of a 5687
  30. Output Transformer Question
  31. Stepped attenuator
  32. PP2A3 amp options
  33. Need advice: Want to learn Vacuum tubes
  34. AVO CT-160 --- Help
  35. Needed schematic....
  36. Az1 mounted on wood!
  37. Dynaco A450 specs
  38. Ecc186= SQ Ecc82
  39. tube amp kit on 230 v???
  40. some tubes
  41. ppp el84 fixed bias schematics
  42. Tube buffered NIGC trafo thoughs?
  43. driver stage
  44. PS cap placement/type
  45. Vintage OPT
  46. simple, single-ended project
  47. 6sn7 - 6bx7 - sv811-3 amp
  48. I look for a correct driver stage
  49. PCB tubes amp?
  50. XLR to 1/4" TRS?
  51. Umbilical Connector Suggestions
  52. Good Inexpensive Starter Amp Kit
  53. tube rectified preamp schematic
  54. oxygen free interconnects
  55. how to calculate feedback resistor
  56. Topaz Isolation Tranny
  57. 4E27A monster se amp??
  58. 6V6 Parafeed?
  59. Old Tranny Potting Material
  60. Brimar ECC81
  61. PCB mounting B7G sockets
  62. Directly heated cathodes, but why?
  63. SET kit for newbie
  64. High Power 805 Triode based amplifier
  65. DigitalSignalProcessing -> future?
  66. 5v Damper Diode?
  67. Tubes in Class D amplifiers
  68. Universal power supply UIP-1 from former USSR schematics
  69. First project for Proac loudspeakers
  70. transformers
  71. cathode battery bias questions
  72. tube amp project
  73. AN DacKit 1.2 Upgrade Ideas
  74. What are the requirements for driving a 300B?
  75. 900v. 100ma. Power supply for 813 tube amplifier
  76. Chassis Internal Height / Pot Clearance
  77. Bogen help
  78. Tube tester questions
  79. 211 VT-4C Good Simple SE Schematic
  80. mosfet in regulated PS.
  81. Hammond Transformer in Toronto
  82. 6n30pi plate resistance ?
  83. balanced input stage
  84. A better triode strap?
  85. Chinese new 845
  86. what tube manufacture of 6550??
  87. Low frequency noise in a 12B4 preamp
  88. Difference between CK6528 and 6528A ?
  89. 6L6 help needed
  90. Hawksford style error correcting output
  91. SE UL OT - primary wired in reverse
  92. tube bias pot question
  93. Transformer supplier in Australia
  94. Newb here
  95. Anyone familiar with James output transformers?
  96. What Limits Freqency response in a simple tube amp like the zen?
  97. Grid driven (ETM) KT88 SE amp design - final works on paper
  98. Sansui 1000 outputs?
  99. The overlooked is often cheaper
  100. Tube amp design characteristics?
  101. ecc40 or 76 as driver for 2A3
  102. toroids on top of each other ?
  103. Out Of Order
  104. Pinging JAX (Sweden)
  105. Common Cathode 6922 output impedance?
  106. Blue Velvet Preamp
  107. Has anyone got any plans for a car amp?
  108. Tube Radio Kit
  109. New Tube Porn!!
  110. Need someone to host my "TUBE PORN" images.
  111. Trying to understand preamp schematic...
  112. 6C33C schematic
  113. We have liftoff!!!! Houston, all systems are go!
  114. Dynaco ST70
  115. Is Tesla still going?
  116. yet another 12b4a
  117. Tubes load resistance and output trans impedance
  118. Antique schematic help please.
  119. 12b4a wiring question
  120. $1 AMP find
  121. Heater winding load question.
  122. Direct Coupling Modulated Bias (SET)
  123. Amp with 6c33
  124. Ideas for amp rebuild...
  125. simple tube amp
  126. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?
  127. CCS design help!!
  128. Proposed Transfomer/Valve Layout
  129. My darling is giving me hell!
  130. EL84 or 6v6 or something else?
  131. Borbely hybrid phono
  132. SS power supply question
  133. RCA Tube Radio...circa 1930-40
  134. New project on 807
  135. SE design using 10k OPTs
  136. Biasing a cathode follower?
  137. Lower Distortion Alternatives to 12AT7 & 12AU7 ?
  138. Information needed
  139. Hybrid
  140. found two boxes of GE 6CL6 tubes
  141. Please help me compare 2 cattle of fish...
  142. Vacuum Tube Valley 6SN7 preamp
  143. SET Power Supply Regulation
  144. TubeCAD
  145. 60 Hz noise in modified Audible Illusions M2B
  146. Anodized Aluminum and Glue/Epoxy
  147. shared parts between channels
  148. May I use 5K transformer for Dynaco III amp?
  149. First amp build questions
  150. Help needed changing from srpp5814a to srpp12bh7a
  151. ok, i'll try and make it simple.
  152. Sure, copy an amp. . . It'd work but I'm looking for something different.
  153. Half a bee Philosophically. . . Er sorry Its actually about ECC83 amps
  154. Bogan schematic for HO 50 power Amp
  155. Can VT-185 be applied in audio circuit?
  156. Best PP transformer for 2A3 amp?
  157. help in finding tubetester meter value
  158. B+ Voltage
  159. CCS Conceptual Qs, Using Gary Pimm CCS as Example
  160. Is there a no/gain preamplifier schematic using high-distortion EC90?
  161. Klystron??
  162. single ended 2a3 project
  163. Visit Shuguang tube factory(many pics)
  164. AKAI M8 Tube R-R input problem
  165. How do Sovtek 6L6WGCs stand up?
  166. Hammond SE Transformer question
  167. Tube Safety
  168. old console
  169. AB1 or 2?
  170. help with restoring amp
  171. Tube preamplifier with PCC88
  172. Tube amplifier 300b proyect
  173. linestage needed
  174. 5687 Tube - best choice
  175. Fisher 500c - Trouble shooting tuner section
  176. Morgan Jones book to swap
  177. gu-48 PP
  178. Taylor 45b Gm Problem
  179. 5687, ECC99, 7119, or E182CC??
  180. Bell Sound Systems Old Gem
  181. Mu-follower current capability?
  182. Filaments voltage question
  183. Is it Good to regulate supplies?
  184. Damper Diodes
  185. Fisher X-100 transformers
  186. Some questions about C4S CCS adjustment.
  187. Lowther LL18S stereo power amplifier - circuit diagram?
  188. Problem with mouting choke underneath chassis?
  189. How accurate is RMAA distortion measurement?
  190. 801
  191. CROFT Eminent Audio
  192. Any good flea-watt SET designs?
  193. PTP wiring
  194. switching regulators
  195. Push Pull Power supply. to Tube or not to?
  196. Kepco 615B Bench Supply pix
  197. Standart gains and voltage levels for standart audio eq
  198. How do I measure OPT impedance?
  199. Using TFA 204 transformers for SE EL84?
  200. Help on 311-CH triode tube
  201. Shots of my GG pre amp!!
  202. 6C45Pi Microphone Preamp
  203. cf topology lessons... pls help
  204. Father's Cousin Louis's vintage 1920+ collection pictures!
  205. Tube Newbie needs help
  206. Need help
  207. Zytron Tubes
  208. Hapi2 Preamp
  209. Svetlana Cryo Tubes For Wave 8's
  210. Audio Note Preamp Circuit a good guess...
  211. Which one is the better design?
  212. Lab Power Supply for Glass Audio
  213. A joke?
  214. Need Advice on new Amp
  215. Using the 7591 or 7868
  216. Schematic of Audio Research VT 100
  217. Hermetically sealed Oil Filled resistors!
  218. Pre Amp schematic Audio Note M1
  219. opt impedance
  220. Schematic for Bogen DB130 ?
  221. SRPP Help Needed
  222. Schematic for Bogen DB130 ?
  223. Hot tube
  224. 6L6 Design Phase
  225. High Power Single Ended Amplifier Club
  226. Suggestions please..
  227. These are the best looking tube amps I have ever seen
  228. Sylvania News
  229. Will this work? "Mixed" 300B PPP IT
  230. Whats a Good 6L6 circuit?
  231. Circlotron amps
  232. Mods on leak stereo 20
  233. When do the tubes have a fever?
  234. psu problem
  235. earthing
  236. 6V6 SET amp with 6SN7 driver
  237. 6n1p pre with active load
  238. buy tubes in the EU
  239. Neutral AC wave on O'scope
  240. Running power to tubes so as not to effect the audio signal
  241. el34 se schematic opinion
  242. EF86
  243. A Rimbaldi amp?
  244. SE or PP?
  245. PP 807's
  246. CCS loading first stage of DC coupled driver
  247. Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7.
  248. Film cap's
  249. Goertz: amp killer? or where to fix my Audio Research VSi55?
  250. help finding a good amp project?

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