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  1. 6L6 help needed
  2. Hawksford style error correcting output
  3. SE UL OT - primary wired in reverse
  4. tube bias pot question
  5. Transformer supplier in Australia
  6. Newb here
  7. Anyone familiar with James output transformers?
  8. What Limits Freqency response in a simple tube amp like the zen?
  9. Grid driven (ETM) KT88 SE amp design - final works on paper
  10. Sansui 1000 outputs?
  11. The overlooked is often cheaper
  12. Fender 6L6 Amp... HELP!!!
  13. Tube amp design characteristics?
  14. ecc40 or 76 as driver for 2A3
  15. toroids on top of each other ?
  16. Out Of Order
  17. Pinging JAX (Sweden)
  18. Common Cathode 6922 output impedance?
  19. Blue Velvet Preamp
  20. Has anyone got any plans for a car amp?
  21. Tube Radio Kit
  22. New Tube Porn!!
  23. Need someone to host my "TUBE PORN" images.
  24. Trying to understand preamp schematic...
  25. 6C33C schematic
  26. We have liftoff!!!! Houston, all systems are go!
  27. Dynaco ST70
  28. Is Tesla still going?
  29. yet another 12b4a
  30. Tubes load resistance and output trans impedance
  31. Antique schematic help please.
  32. 12b4a wiring question
  33. $1 AMP find
  34. Heater winding load question.
  35. Direct Coupling Modulated Bias (SET)
  36. Amp with 6c33
  37. Ideas for amp rebuild...
  38. simple tube amp
  39. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?
  40. CCS design help!!
  41. Proposed Transfomer/Valve Layout
  42. Mic input for guitar?
  43. My darling is giving me hell!
  44. EL84 or 6v6 or something else?
  45. Borbely hybrid phono
  46. SS power supply question
  47. RCA Tube Radio...circa 1930-40
  48. New project on 807
  49. SE design using 10k OPTs
  50. Biasing a cathode follower?
  51. Lower Distortion Alternatives to 12AT7 & 12AU7 ?
  52. Oil in Paper in oil capacitor.
  53. Valves for Crackly Fender Hot Rod
  54. Information needed
  55. Hybrid
  56. heavy metal, low power guitar amp?
  57. found two boxes of GE 6CL6 tubes
  58. Please help me compare 2 cattle of fish...
  59. Vacuum Tube Valley 6SN7 preamp
  60. SET Power Supply Regulation
  61. TubeCAD
  62. 60 Hz noise in modified Audible Illusions M2B
  63. Anodized Aluminum and Glue/Epoxy
  64. shared parts between channels
  65. May I use 5K transformer for Dynaco III amp?
  66. First amp build questions
  67. Help needed changing from srpp5814a to srpp12bh7a
  68. ok, i'll try and make it simple.
  69. Sure, copy an amp. . . It'd work but I'm looking for something different.
  70. Half a bee Philosophically. . . Er sorry Its actually about ECC83 amps
  71. Bogan schematic for HO 50 power Amp
  72. Gibson GA-15RV tube amp
  73. Can VT-185 be applied in audio circuit?
  74. Best PP transformer for 2A3 amp?
  75. help in finding tubetester meter value
  76. B+ Voltage
  77. CCS Conceptual Qs, Using Gary Pimm CCS as Example
  78. Is there a no/gain preamplifier schematic using high-distortion EC90?
  79. marshall jcm hifi?
  80. Klystron??
  81. single ended 2a3 project
  82. Visit Shuguang tube factory(many pics)
  83. AKAI M8 Tube R-R input problem
  84. How do Sovtek 6L6WGCs stand up?
  85. Hammond SE Transformer question
  86. Tube Safety
  87. old console
  88. AB1 or 2?
  89. help with restoring amp
  90. Tube preamplifier with PCC88
  91. Tube amplifier 300b proyect
  92. linestage needed
  93. 5687 Tube - best choice
  94. Fisher 500c - Trouble shooting tuner section
  95. Morgan Jones book to swap
  96. gu-48 PP
  97. Taylor 45b Gm Problem
  98. 5687, ECC99, 7119, or E182CC??
  99. Bell Sound Systems Old Gem
  100. Mu-follower current capability?
  101. Bogen M330A Tube PA Amp for Guitar
  102. Filaments voltage question
  103. Is it Good to regulate supplies?
  104. Damper Diodes
  105. Fisher X-100 transformers
  106. Some questions about C4S CCS adjustment.
  107. Lowther LL18S stereo power amplifier - circuit diagram?
  108. Problem with mouting choke underneath chassis?
  109. How accurate is RMAA distortion measurement?
  110. 801
  111. CROFT Eminent Audio
  112. Any good flea-watt SET designs?
  113. PTP wiring
  114. switching regulators
  115. Push Pull Power supply. to Tube or not to?
  116. Kepco 615B Bench Supply pix
  117. Standart gains and voltage levels for standart audio eq
  118. How do I measure OPT impedance?
  119. Using TFA 204 transformers for SE EL84?
  120. Help on 311-CH triode tube
  121. Shots of my GG pre amp!!
  122. 6C45Pi Microphone Preamp
  123. cf topology lessons... pls help
  124. Father's Cousin Louis's vintage 1920+ collection pictures!
  125. Tube Newbie needs help
  126. Need help
  127. Zytron Tubes
  128. Hapi2 Preamp
  129. Svetlana Cryo Tubes For Wave 8's
  130. Audio Note Preamp Circuit a good guess...
  131. Which one is the better design?
  132. Lab Power Supply for Glass Audio
  133. A joke?
  134. Need Advice on new Amp
  135. Using the 7591 or 7868
  136. Schematic of Audio Research VT 100
  137. Hermetically sealed Oil Filled resistors!
  138. Pre Amp schematic Audio Note M1
  139. opt impedance
  140. Schematic for Bogen DB130 ?
  141. SRPP Help Needed
  142. Schematic for Bogen DB130 ?
  143. Hot tube
  144. 6L6 Design Phase
  145. High Power Single Ended Amplifier Club
  146. Suggestions please..
  147. These are the best looking tube amps I have ever seen
  148. Sylvania News
  149. Will this work? "Mixed" 300B PPP IT
  150. Whats a Good 6L6 circuit?
  151. Guitar Tube Preamp
  152. Circlotron amps
  153. Mods on leak stereo 20
  154. When do the tubes have a fever?
  155. psu problem
  156. earthing
  157. 6V6 SET amp with 6SN7 driver
  158. 6n1p pre with active load
  159. buy tubes in the EU
  160. Neutral AC wave on O'scope
  161. Running power to tubes so as not to effect the audio signal
  162. el34 se schematic opinion
  163. EF86
  164. A Rimbaldi amp?
  165. SE or PP?
  166. PP 807's
  167. CCS loading first stage of DC coupled driver
  168. Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7.
  169. Film cap's
  170. Goertz: amp killer? or where to fix my Audio Research VSi55?
  171. help finding a good amp project?
  172. Yet another valve pre, comments?!
  173. Source for round and/or square transformer covers ??
  174. Ac30
  175. Some questions!
  176. filament source connection to DHT
  177. Use tubes for 2000V. power supply,
  178. mu / srpp / or CF?
  179. dB into voltage gain????
  180. Building a Tube Mic Pre
  181. Negative Voltage using tube rectifier?
  182. Reichert info
  183. really basic question
  184. Has anybody built 6BG6 or similar OTL amp?
  185. Old OP Transformer
  186. Need Advice, 820vct tranny?
  187. 811a Tube Cap Size
  188. need help with (now) not-working amp
  189. How about this 12au7 pre?
  190. SV811-3 SE : Lots of questions...
  191. Criticise please!
  192. 6n3p = ECC85 ???
  193. Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp
  194. grid bias
  195. 12AT7 poweramp specs?
  196. valve pre amp
  197. what is the simplest possible triode amp?
  198. poweramp topology
  199. limits in transient time
  200. OPT Design
  201. Would this work
  202. manley pre schematic
  203. Heathkit FM3A
  204. Aleph-type CCS as plate load?
  205. Talbot Wright's Williamson mod (Heathkit W3-AM)
  206. Conrad-Johnson PV6 Preamp
  207. Mc275 opt manual rewinding
  208. Newbie asking help
  209. converting EF86 to take 12AX7
  210. B&K 650 tube tester not working, need help
  211. 5814/12AU7 Preamp?
  212. Grounded Grid pre amp-- help please
  213. Tube output indicator - EM84 or 6AF6G
  214. suggest circuit with gain of 60
  215. ready to mod the hell out of my asl wave 8's
  216. My First DIY - need big help!
  217. rectifier tube question
  218. Newbie with Tannoy grfs, helpme to choice a good amp to them.
  219. Mullard CV 4109 tube
  220. Pre PS Improvements?
  221. 6n7gt+300b
  222. Calculating DC coupled Single Ended Valve Amplifiers - Part #1
  223. 12ax7 preamp,need help.
  224. tube datasheets and amp sch
  225. How to check output transformers ?
  226. Filament of a 6AS7G
  227. triode=>pentode
  228. noob PSUD question...
  229. Detailed and Dry.
  230. Audion sterling phono stage - a good base for future upgrades?
  231. First Try on Tube Preamp
  232. EL34 in class AB2 triode mode push-pull?
  233. Heater Voltage Range, Hi or Low
  234. Donor H/K A224 Amp
  235. market for used tubes?
  236. Voltage Doubler Problem
  237. 6922 as a CCS, a question ?
  238. ALPS Pot
  239. Tube parameter ?
  240. tube life
  241. 7591A Tubes for sale?
  242. Restoring tired tubes
  243. My Bottlehead Tube Rig is done...for now
  244. Hammond Transformers
  245. Kenwood KW-70 Receiver
  246. Tube output buffer for DAC....needs advice!
  247. The Crackerbox Amp
  248. Antique Sound Lab MG-SPM25 Output Transformers
  249. el84 quad schematic..something is wrong...?
  250. really dumb question about SE 6bq5 operating point (triode)

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