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  1. tube amp project
  2. AN DacKit 1.2 Upgrade Ideas
  3. What are the requirements for driving a 300B?
  4. 900v. 100ma. Power supply for 813 tube amplifier
  5. Chassis Internal Height / Pot Clearance
  6. Bogen help
  7. Tube tester questions
  8. 211 VT-4C Good Simple SE Schematic
  9. mosfet in regulated PS.
  10. Hammond Transformer in Toronto
  11. 6n30pi plate resistance ?
  12. balanced input stage
  13. A better triode strap?
  14. Chinese new 845
  15. what tube manufacture of 6550??
  16. Low frequency noise in a 12B4 preamp
  17. Difference between CK6528 and 6528A ?
  18. 6L6 help needed
  19. Hawksford style error correcting output
  20. SE UL OT - primary wired in reverse
  21. tube bias pot question
  22. Transformer supplier in Australia
  23. Newb here
  24. Anyone familiar with James output transformers?
  25. What Limits Freqency response in a simple tube amp like the zen?
  26. Grid driven (ETM) KT88 SE amp design - final works on paper
  27. Sansui 1000 outputs?
  28. The overlooked is often cheaper
  29. Tube amp design characteristics?
  30. ecc40 or 76 as driver for 2A3
  31. toroids on top of each other ?
  32. Out Of Order
  33. Pinging JAX (Sweden)
  34. Common Cathode 6922 output impedance?
  35. Blue Velvet Preamp
  36. Has anyone got any plans for a car amp?
  37. Tube Radio Kit
  38. New Tube Porn!!
  39. Need someone to host my "TUBE PORN" images.
  40. Trying to understand preamp schematic...
  41. 6C33C schematic
  42. We have liftoff!!!! Houston, all systems are go!
  43. Dynaco ST70
  44. Is Tesla still going?
  45. yet another 12b4a
  46. Tubes load resistance and output trans impedance
  47. Antique schematic help please.
  48. 12b4a wiring question
  49. $1 AMP find
  50. Heater winding load question.
  51. Direct Coupling Modulated Bias (SET)
  52. Amp with 6c33
  53. Ideas for amp rebuild...
  54. simple tube amp
  55. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?
  56. CCS design help!!
  57. Proposed Transfomer/Valve Layout
  58. My darling is giving me hell!
  59. EL84 or 6v6 or something else?
  60. Borbely hybrid phono
  61. SS power supply question
  62. RCA Tube Radio...circa 1930-40
  63. New project on 807
  64. SE design using 10k OPTs
  65. Biasing a cathode follower?
  66. Lower Distortion Alternatives to 12AT7 & 12AU7 ?
  67. Information needed
  68. Hybrid
  69. found two boxes of GE 6CL6 tubes
  70. Please help me compare 2 cattle of fish...
  71. Vacuum Tube Valley 6SN7 preamp
  72. SET Power Supply Regulation
  73. TubeCAD
  74. 60 Hz noise in modified Audible Illusions M2B
  75. Anodized Aluminum and Glue/Epoxy
  76. shared parts between channels
  77. May I use 5K transformer for Dynaco III amp?
  78. First amp build questions
  79. Help needed changing from srpp5814a to srpp12bh7a
  80. ok, i'll try and make it simple.
  81. Sure, copy an amp. . . It'd work but I'm looking for something different.
  82. Half a bee Philosophically. . . Er sorry Its actually about ECC83 amps
  83. Bogan schematic for HO 50 power Amp
  84. Can VT-185 be applied in audio circuit?
  85. Best PP transformer for 2A3 amp?
  86. help in finding tubetester meter value
  87. B+ Voltage
  88. CCS Conceptual Qs, Using Gary Pimm CCS as Example
  89. Is there a no/gain preamplifier schematic using high-distortion EC90?
  90. Klystron??
  91. single ended 2a3 project
  92. Visit Shuguang tube factory(many pics)
  93. AKAI M8 Tube R-R input problem
  94. How do Sovtek 6L6WGCs stand up?
  95. Hammond SE Transformer question
  96. Tube Safety
  97. old console
  98. AB1 or 2?
  99. help with restoring amp
  100. Tube preamplifier with PCC88
  101. Tube amplifier 300b proyect
  102. linestage needed
  103. 5687 Tube - best choice
  104. Fisher 500c - Trouble shooting tuner section
  105. Morgan Jones book to swap
  106. gu-48 PP
  107. Taylor 45b Gm Problem
  108. 5687, ECC99, 7119, or E182CC??
  109. Bell Sound Systems Old Gem
  110. Mu-follower current capability?
  111. Filaments voltage question
  112. Is it Good to regulate supplies?
  113. Damper Diodes
  114. Fisher X-100 transformers
  115. Some questions about C4S CCS adjustment.
  116. Lowther LL18S stereo power amplifier - circuit diagram?
  117. Problem with mouting choke underneath chassis?
  118. How accurate is RMAA distortion measurement?
  119. 801
  120. CROFT Eminent Audio
  121. Any good flea-watt SET designs?
  122. PTP wiring
  123. switching regulators
  124. Push Pull Power supply. to Tube or not to?
  125. Kepco 615B Bench Supply pix
  126. Standart gains and voltage levels for standart audio eq
  127. How do I measure OPT impedance?
  128. Using TFA 204 transformers for SE EL84?
  129. Help on 311-CH triode tube
  130. Shots of my GG pre amp!!
  131. 6C45Pi Microphone Preamp
  132. cf topology lessons... pls help
  133. Father's Cousin Louis's vintage 1920+ collection pictures!
  134. Tube Newbie needs help
  135. Need help
  136. Zytron Tubes
  137. Hapi2 Preamp
  138. Svetlana Cryo Tubes For Wave 8's
  139. Audio Note Preamp Circuit a good guess...
  140. Which one is the better design?
  141. Lab Power Supply for Glass Audio
  142. A joke?
  143. Need Advice on new Amp
  144. Using the 7591 or 7868
  145. Schematic of Audio Research VT 100
  146. Hermetically sealed Oil Filled resistors!
  147. Pre Amp schematic Audio Note M1
  148. opt impedance
  149. Schematic for Bogen DB130 ?
  150. SRPP Help Needed
  151. Schematic for Bogen DB130 ?
  152. Hot tube
  153. 6L6 Design Phase
  154. High Power Single Ended Amplifier Club
  155. Suggestions please..
  156. These are the best looking tube amps I have ever seen
  157. Sylvania News
  158. Will this work? "Mixed" 300B PPP IT
  159. Whats a Good 6L6 circuit?
  160. Circlotron amps
  161. Mods on leak stereo 20
  162. When do the tubes have a fever?
  163. psu problem
  164. earthing
  165. 6V6 SET amp with 6SN7 driver
  166. 6n1p pre with active load
  167. buy tubes in the EU
  168. Neutral AC wave on O'scope
  169. Running power to tubes so as not to effect the audio signal
  170. el34 se schematic opinion
  171. EF86
  172. A Rimbaldi amp?
  173. SE or PP?
  174. PP 807's
  175. CCS loading first stage of DC coupled driver
  176. Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7.
  177. Film cap's
  178. Goertz: amp killer? or where to fix my Audio Research VSi55?
  179. help finding a good amp project?
  180. Yet another valve pre, comments?!
  181. Source for round and/or square transformer covers ??
  182. Some questions!
  183. filament source connection to DHT
  184. Use tubes for 2000V. power supply,
  185. mu / srpp / or CF?
  186. dB into voltage gain????
  187. Building a Tube Mic Pre
  188. Negative Voltage using tube rectifier?
  189. Reichert info
  190. really basic question
  191. Has anybody built 6BG6 or similar OTL amp?
  192. Old OP Transformer
  193. Need Advice, 820vct tranny?
  194. 811a Tube Cap Size
  195. need help with (now) not-working amp
  196. How about this 12au7 pre?
  197. SV811-3 SE : Lots of questions...
  198. Criticise please!
  199. 6n3p = ECC85 ???
  200. Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp
  201. grid bias
  202. 12AT7 poweramp specs?
  203. valve pre amp
  204. what is the simplest possible triode amp?
  205. poweramp topology
  206. limits in transient time
  207. OPT Design
  208. Would this work
  209. manley pre schematic
  210. Heathkit FM3A
  211. Aleph-type CCS as plate load?
  212. Talbot Wright's Williamson mod (Heathkit W3-AM)
  213. Conrad-Johnson PV6 Preamp
  214. MC275 OPT manual rewinding
  215. Newbie asking help
  216. converting EF86 to take 12AX7
  217. B&K 650 tube tester not working, need help
  218. 5814/12AU7 Preamp?
  219. Grounded Grid pre amp-- help please
  220. Tube output indicator - EM84 or 6AF6G
  221. suggest circuit with gain of 60
  222. ready to mod the hell out of my asl wave 8's
  223. My First DIY - need big help!
  224. rectifier tube question
  225. Newbie with Tannoy grfs, helpme to choice a good amp to them.
  226. Mullard CV 4109 tube
  227. Pre PS Improvements?
  228. 6n7gt+300b
  229. Calculating DC coupled Single Ended Valve Amplifiers - Part #1
  230. 12ax7 preamp,need help.
  231. tube datasheets and amp sch
  232. How to check output transformers ?
  233. Filament of a 6AS7G
  234. triode=>pentode
  235. noob PSUD question...
  236. Detailed and Dry.
  237. Audion sterling phono stage - a good base for future upgrades?
  238. First Try on Tube Preamp
  239. EL34 in class AB2 triode mode push-pull?
  240. Heater Voltage Range, Hi or Low
  241. Donor H/K A224 Amp
  242. market for used tubes?
  243. Voltage Doubler Problem
  244. 6922 as a CCS, a question ?
  245. ALPS Pot
  246. Tube parameter ?
  247. tube life
  248. 7591A Tubes for sale?
  249. Restoring tired tubes
  250. My Bottlehead Tube Rig is done...for now

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