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  1. $1 AMP find
  2. Heater winding load question.
  3. Direct Coupling Modulated Bias (SET)
  4. Amp with 6c33
  5. Ideas for amp rebuild...
  6. simple tube amp
  7. What's the ideal tube amplifier for me for max. $660 , maybe a kit ?
  8. CCS design help!!
  9. Proposed Transfomer/Valve Layout
  10. Mic input for guitar?
  11. My darling is giving me hell!
  12. EL84 or 6v6 or something else?
  13. Borbely hybrid phono
  14. SS power supply question
  15. RCA Tube Radio...circa 1930-40
  16. New project on 807
  17. SE design using 10k OPTs
  18. Biasing a cathode follower?
  19. Lower Distortion Alternatives to 12AT7 & 12AU7 ?
  20. Oil in Paper in oil capacitor.
  21. Valves for Crackly Fender Hot Rod
  22. Information needed
  23. Hybrid
  24. heavy metal, low power guitar amp?
  25. found two boxes of GE 6CL6 tubes
  26. Please help me compare 2 cattle of fish...
  27. Vacuum Tube Valley 6SN7 preamp
  28. SET Power Supply Regulation
  29. TubeCAD
  30. 60 Hz noise in modified Audible Illusions M2B
  31. Anodized Aluminum and Glue/Epoxy
  32. shared parts between channels
  33. May I use 5K transformer for Dynaco III amp?
  34. First amp build questions
  35. Help needed changing from srpp5814a to srpp12bh7a
  36. ok, i'll try and make it simple.
  37. Sure, copy an amp. . . It'd work but I'm looking for something different.
  38. Half a bee Philosophically. . . Er sorry Its actually about ECC83 amps
  39. Bogan schematic for HO 50 power Amp
  40. Gibson GA-15RV tube amp
  41. Can VT-185 be applied in audio circuit?
  42. Best PP transformer for 2A3 amp?
  43. help in finding tubetester meter value
  44. B+ Voltage
  45. CCS Conceptual Qs, Using Gary Pimm CCS as Example
  46. Is there a no/gain preamplifier schematic using high-distortion EC90?
  47. marshall jcm hifi?
  48. Klystron??
  49. single ended 2a3 project
  50. Visit Shuguang tube factory(many pics)
  51. AKAI M8 Tube R-R input problem
  52. How do Sovtek 6L6WGCs stand up?
  53. Hammond SE Transformer question
  54. Tube Safety
  55. old console
  56. AB1 or 2?
  57. help with restoring amp
  58. Tube preamplifier with PCC88
  59. Tube amplifier 300b proyect
  60. linestage needed
  61. 5687 Tube - best choice
  62. Fisher 500c - Trouble shooting tuner section
  63. Morgan Jones book to swap
  64. gu-48 PP
  65. Taylor 45b Gm Problem
  66. 5687, ECC99, 7119, or E182CC??
  67. Bell Sound Systems Old Gem
  68. Mu-follower current capability?
  69. Bogen M330A Tube PA Amp for Guitar
  70. Filaments voltage question
  71. Is it Good to regulate supplies?
  72. Damper Diodes
  73. Fisher X-100 transformers
  74. Some questions about C4S CCS adjustment.
  75. Lowther LL18S stereo power amplifier - circuit diagram?
  76. Problem with mouting choke underneath chassis?
  77. How accurate is RMAA distortion measurement?
  78. 801
  79. CROFT Eminent Audio
  80. Any good flea-watt SET designs?
  81. PTP wiring
  82. switching regulators
  83. Push Pull Power supply. to Tube or not to?
  84. Kepco 615B Bench Supply pix
  85. Standart gains and voltage levels for standart audio eq
  86. How do I measure OPT impedance?
  87. Using TFA 204 transformers for SE EL84?
  88. Help on 311-CH triode tube
  89. Shots of my GG pre amp!!
  90. 6C45Pi Microphone Preamp
  91. cf topology lessons... pls help
  92. Father's Cousin Louis's vintage 1920+ collection pictures!
  93. Tube Newbie needs help
  94. Need help
  95. Zytron Tubes
  96. Hapi2 Preamp
  97. Svetlana Cryo Tubes For Wave 8's
  98. Audio Note Preamp Circuit a good guess...
  99. Which one is the better design?
  100. Lab Power Supply for Glass Audio
  101. A joke?
  102. Need Advice on new Amp
  103. Using the 7591 or 7868
  104. Schematic of Audio Research VT 100
  105. Hermetically sealed Oil Filled resistors!
  106. Pre Amp schematic Audio Note M1
  107. opt impedance
  108. Schematic for Bogen DB130 ?
  109. SRPP Help Needed
  110. Schematic for Bogen DB130 ?
  111. Hot tube
  112. 6L6 Design Phase
  113. High Power Single Ended Amplifier Club
  114. Suggestions please..
  115. These are the best looking tube amps I have ever seen
  116. Sylvania News
  117. Will this work? "Mixed" 300B PPP IT
  118. Whats a Good 6L6 circuit?
  119. Guitar Tube Preamp
  120. Circlotron amps
  121. Mods on leak stereo 20
  122. When do the tubes have a fever?
  123. psu problem
  124. earthing
  125. 6V6 SET amp with 6SN7 driver
  126. 6n1p pre with active load
  127. buy tubes in the EU
  128. Neutral AC wave on O'scope
  129. Running power to tubes so as not to effect the audio signal
  130. el34 se schematic opinion
  131. Ef86
  132. A Rimbaldi amp?
  133. SE or PP?
  134. PP 807's
  135. CCS loading first stage of DC coupled driver
  136. Search for a pre (RIAA+LINE+TUNER)with 12au7-12ax7.
  137. Film cap's
  138. Goertz: amp killer? or where to fix my Audio Research VSi55?
  139. help finding a good amp project?
  140. Yet another valve pre, comments?!
  141. Source for round and/or square transformer covers ??
  142. Ac30
  143. Some questions!
  144. filament source connection to DHT
  145. Use tubes for 2000V. power supply,
  146. mu / srpp / or CF?
  147. dB into voltage gain????
  148. Building a Tube Mic Pre
  149. Negative Voltage using tube rectifier?
  150. Reichert info
  151. really basic question
  152. Has anybody built 6BG6 or similar OTL amp?
  153. Old OP Transformer
  154. Need Advice, 820vct tranny?
  155. 811a Tube Cap Size
  156. need help with (now) not-working amp
  157. How about this 12au7 pre?
  158. SV811-3 SE : Lots of questions...
  159. Criticise please!
  160. 6n3p = ECC85 ???
  161. Any website reference for diy Audio Research REFERENCE amp and Manley Studio amp
  162. grid bias
  163. 12AT7 poweramp specs?
  164. valve pre amp
  165. what is the simplest possible triode amp?
  166. poweramp topology
  167. limits in transient time
  168. OPT Design
  169. Would this work
  170. manley pre schematic
  171. Heathkit FM3A
  172. Aleph-type CCS as plate load?
  173. Talbot Wright's Williamson mod (Heathkit W3-AM)
  174. Conrad-Johnson PV6 Preamp
  175. Mc275 opt manual rewinding
  176. Newbie asking help
  177. converting EF86 to take 12AX7
  178. B&K 650 tube tester not working, need help
  179. 5814/12AU7 Preamp?
  180. Grounded Grid pre amp-- help please
  181. Tube output indicator - EM84 or 6AF6G
  182. suggest circuit with gain of 60
  183. ready to mod the hell out of my asl wave 8's
  184. My First DIY - need big help!
  185. rectifier tube question
  186. Newbie with Tannoy grfs, helpme to choice a good amp to them.
  187. Mullard CV 4109 tube
  188. Pre PS Improvements?
  189. 6n7gt+300b
  190. Calculating DC coupled Single Ended Valve Amplifiers - Part #1
  191. 12ax7 preamp,need help.
  192. tube datasheets and amp sch
  193. How to check output transformers ?
  194. Filament of a 6AS7G
  195. triode=>pentode
  196. noob PSUD question...
  197. Detailed and Dry.
  198. Audion sterling phono stage - a good base for future upgrades?
  199. First Try on Tube Preamp
  200. EL34 in class AB2 triode mode push-pull?
  201. Heater Voltage Range, Hi or Low
  202. Donor H/K A224 Amp
  203. market for used tubes?
  204. Voltage Doubler Problem
  205. 6922 as a CCS, a question ?
  206. ALPS Pot
  207. Tube parameter ?
  208. tube life
  209. 7591A Tubes for sale?
  210. Restoring tired tubes
  211. My Bottlehead Tube Rig is done...for now
  212. Hammond Transformers
  213. Kenwood KW-70 Receiver
  214. Tube output buffer for DAC....needs advice!
  215. The Crackerbox Amp
  216. Antique Sound Lab MG-SPM25 Output Transformers
  217. el84 quad schematic..something is wrong...?
  218. really dumb question about SE 6bq5 operating point (triode)
  219. 6n7gt
  220. EE-Zee & Chee-Zee bias and offset adjustment idea
  221. Preamp Selection
  222. High frecuency oscillation when moving volume pot
  223. Choke load - how to plot loadline?
  224. Audio Research LS2
  225. Any Tube DIYers in Bay Area
  226. 6DJ8 preamp voltage?
  227. Diodes in Grid-Cathode Circuit
  228. To regulate or not?
  229. Odd tube behavior
  230. output txfr on cathode?
  231. tube preamp w/ XLR?
  232. ECC88 and PCC88 filament voltages
  233. Best tube choice for 1st SET project?
  234. Croft Vitale
  235. at last, amp finnished
  236. Silver micas as coupling caps?
  237. Valve-Heart Recording Studio
  238. Prototyping ( Breadboard ) Chassis Ideas and Suggestions
  239. old tubes
  240. where to place extra filter cap
  241. Troubleshooting a 6n1p linestage.
  242. 300BSE series
  243. Which triode is the best for preamp?
  244. AV8 and AV15 Vaic tubes
  245. Refridgerator trying to kill my Valve Amp
  246. When is capacitance making AC ripple a non-issue in B+ PS's?
  247. Quicksilver Bias Problem
  248. Looking for good book about phase split
  249. speaker protection fuse in Transcendent T8
  250. Shuguang Tube Factory(pics)

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