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  1. NAMM Zoo 2011
  2. Recommended O'Scope Reading?
  3. Damage to valve amp when powered up but disconnected to speakers?
  4. preferred resistor type
  5. use more then 'maximum capacitance' after tube rectifier
  6. Headphone Tube Amp D3a
  7. Dared 5.1 tube amp
  8. Designing Transformers with J.C.Maxwell
  9. Cathode resistor calc?
  10. Selector switch question
  11. good circuit to use with Grounded Grid Pre
  12. JJ KT88 tubes glowing bright yellow.
  13. Transistorised-Tubed-Magnetic Amplifier
  14. ST-35 Tube Brands
  15. Where you buy iron transformer core for DIY audio transformer
  16. Improve this SP-11 HV supply?
  17. More Antek Iron
  18. Edcor Transformer Specs
  19. Volume control resistance question? Step Attenuator?
  20. Minimum space between 6V6 tube in Push-Pull Amp
  21. GE Jan 6550a for SET amp?
  22. Chassis mount connector strip
  23. Transformer winding - mysterious!
  24. can anyone identify theses OT markings?
  25. Excessive hum with 1960's amp.
  26. Western Electric/Hickock 600A
  27. Pete Millett Uniamp
  28. cathode resistor sudden rising value on 7591
  29. 7591 cathode resistor unstable
  30. David
  31. Looking for a DHT Pre & Phono design / ideas please
  32. Hi, New member just bought k272a kit from Oatley
  33. Building an amp from scratch - what features would i want
  34. Lafayette LA215 voltage problem !
  35. 12ax7: How to maximize output?
  36. Low voltage tube pre-amp for T-amp
  37. Hybride bipolair amp
  38. Single end amp power supply upgrade
  39. Pentode curves - how to find operating point withoud going crazy?
  40. 6922 into 6H30 socket ?
  41. Headwize 6N1P OTL headphone amp having hum
  42. Need help to calculate R in a CCS!
  43. #40-LL1660-4*2A3
  44. Help with stereo tube amp design from parts
  45. Decoupling cap hum
  46. Plate chokes
  47. Tube output protection
  48. 12EN6 in triode mode...fine ???
  49. used 12at7
  50. Need advise with NFB loop
  51. 1964 Amplifier!!
  52. Very basic grid question????
  53. 12AX7 PULSE
  54. short article about operating points
  55. How is an amp's output measured?
  56. current/cathode feedback
  57. 6N23P, transistor PP hybrid amp project.
  58. Transformer choice for DC heater supply?
  59. Help me with i177 tubetester
  60. HeathKit Euw-15 Tube power Supply failure.
  61. Got unknown tube preamp board, need help!
  62. Ergo-Ella + Budget AVC Do-It-Box
  63. Phono pre amp question.
  64. Zener regulation for fixed-bias supply
  65. hot transformer
  66. H. H. Scott 299C output transformers
  67. decisions fostex and the DIY-K12G budget system..
  68. LTSpice GU19 GU29 6R3S
  69. power transfo as HT choke
  70. Dummy newb needs help with Bogen VP17X
  71. Modding the SAKUA AV200
  72. Anybody use 841s(VT-51)?
  73. Help me make use of these transformers
  74. Wiring Buck Transformer with GE transformer Help!
  75. audio research sp9
  76. WE417A Valve Preamplifier
  77. Hi-Fi Tube Amplifier and more
  78. Radford SC-22 Restoration - Input Transistor Biasing Question
  79. Tube Tester
  80. Looking for off-the-wall oil caps
  81. 805 MonoBlock SE Amp Kit?
  82. Back to back toroids
  83. 6AU6 in CCS circuits
  84. Morgan Jones' RIAA Pre-Amp
  85. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  86. Building an Aikido LV for a headphone amp
  87. What to do with a 6L6-GC?
  88. loose plate caps, hi temp glue???
  89. Power supply question
  90. RCA Line Input Shielding Technique Help
  91. Randall shutting down
  92. Grommes 260A DIY report, questions, suggestions
  93. Line out from tube organ
  94. Minimum Gain Stage Rg Value?
  95. One-half 6H30
  96. Novice In Over His Head
  97. Twisted Heater Wires
  98. Guitar amplifier PSU hum woes
  99. Little Dot MK III - noisy / oscillation?
  100. Rundmaus at work - PP1C without sand
  101. Power transformer for Firefly Amp?
  102. where to start? 2 channel SS/tube bass preamp
  103. mr liang 845
  104. RH84 (EL84) Choke etc...
  105. Gyrator Loaded 12b4A: The Latest Version.
  106. Wood Trimmed Chassis
  107. Sansui BA-303
  108. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  109. hybrid amp with dht or idht inputs?
  110. Balanced to Unbalanced Line Conversion
  111. Headphone amplifier with TH100 tube
  112. Happy New Year - A New Amp to Argue About...
  113. fee-nix, the desktop amp
  114. Any thoughts on what damage I did?
  115. So. Cal. Ham Festival?
  116. zener LTSpice model
  117. Mini-console Schematic
  118. Will this circuit work Ok?
  119. tube CCS below cathodes, startup issues?
  120. Why the wimpy 300B operating points?
  121. can a cathode follower drive a tone stack and an effects loop?
  122. Bench supply ideas
  123. A Newbie Tx Question
  124. Volume Control Help!
  125. Could anyone opine on this circuit?
  126. 5U4 Rectifier. Maximum filter cap value?
  127. Grounding outputs?
  128. Happy holidays folks.
  129. Thermionic diode
  130. Lafayette amp arcing Rectifier problem
  131. ECF801 any good for audio
  132. Harman Kardon Citation II PI question
  133. 6N1P
  134. Need advice for a 93 Fender "The Twin"
  135. Shorted secondary windings of transformer
  136. Toasted my rectifier - need some pointers to troubleshoot
  137. Parallel amp connection to speakers, SS + tube
  138. Loose pin on a JJ 300B
  139. Measuring milliamp with Fluke 771 Clamp Meter Question?
  140. Spice - and Sting is nowhere to be seen...
  141. Realistic Stereo 24
  142. 6N3P-EV measured Ia/Va/Vg curves
  143. Anyone have the Meng Mini X1 amp here?
  144. EL84/6SN7 tube amp
  145. Something Like A 6EU7?
  146. Which 845 amp?
  147. another 12ax7 preamp
  148. SOHA v2 cost
  149. Yarland FV34C-111 Valve substitution
  150. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  151. XiangSheng D-2020-KT88
  152. Edcor vs Electra-Print
  153. adding headphone jack to dynaco pas 3 clone
  154. Revising an old tube preamp section: where to get the knowledge?
  155. 3 Caps parallel to series vs ??? Sonic Performance?
  156. 6CG7 Bias Current?
  157. Output Pentode Screen at half Plate voltage
  158. PP to parallel
  159. Edcor vs Electra-Print
  160. Show off your P2P wiring.
  161. adapting 2 SE boards for a PP driver stage
  162. Freed transformer info needed
  163. Recomended connectors?
  164. COSMOS amp, Japan
  165. Advantage to constant current draw from power supply?
  166. SP9 schematic questions...
  167. Would you rebuild this?
  168. possible advantage to global???
  169. Correct Path: Diodes Or Rectifier Tube?
  170. 6BQ5 Bias Point Help
  171. Old Hammond 1640SE OPT
  172. Copland CVA 306 Can work only with 2 tubes ??
  173. Cleaning Edison Price posts
  174. need help on treble distortion with my EAR834p phono
  175. SE 6CB5A amp with 6N7 driver
  176. McAlister PP150
  177. Standard Input Design Value
  178. Breadboard help
  179. Odd amp built with PL81 / PL36
  180. Has anyone built a 47 SE amp?
  181. Which EL84
  182. First attempt p2p valve power amp
  183. Fundamental Pentode Question
  184. EL34 Triode Mode Resistors
  185. 807 SE Schematic Critiques
  186. Amp for Magneplanar 1.6
  187. After Christmas free time
  188. Tubelab Single Ended Amps
  189. I suppose I am a little dense
  190. 12AU7 SE practise amp project
  191. LED bias with gNFB
  192. Schematic question - what this cap is for ?
  193. Hi fi stereo tube amp through guitar speakers??
  194. Output transformer
  195. 50C5s in PP ?
  196. input resistor on the JE LAB 300B
  197. Sockets for UY 41
  198. Any good tube amp kits for a first attempt?
  199. power supply suggestions and advice
  200. favourite midrange,treble tubes
  201. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  202. suspect a bad tube-any simple checks?
  203. Long-Tailed Pair, pse. share your views...
  204. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  205. Ultralinear but no UL taps.
  206. OPT Question
  207. An Important Dumb Question-Newbie Stuff
  208. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  209. Autobias OTL....Any thoughts?
  210. Valve Line Amp suggestions
  211. another 6c33 se
  212. no sound on the PHONO channel....
  213. What do you think of this cheap tube amplifier?
  214. What guitar amp should I build from these?
  215. EL34 Hickok 439B setup
  216. Hickok 605
  217. Help! Want to Diy Tube Amp!
  218. Anyone care for some troubleshooting? Hum issue
  219. Re-tubing stock ST70
  220. your opinion of this bias problem
  221. paraphase with follower
  222. Noisy transformer
  223. 6BN11 in triode mode...any experience ?
  224. morgan jones:output stages
  225. Dynaco SCA-35 - fan Cooling?
  226. Partridge Vs Edcor
  227. Feedback with a choke ?
  228. Do you have a tube tester?
  229. Level matching?
  230. cascoded bjt ccs - design check please
  231. Hammond Organ amp to guitar amp
  232. Square wave testing......a guitar amp
  233. help on amp gain structure
  234. iPod/BlackBerry/MP3 input
  235. Shuguang 805 - Advice
  236. Mains Transformer Hums under load
  237. Film Caps in Tube Amps
  238. K12G left channel dead: HELP!
  239. Model 16LS Stereo Integrated Tube Amplifier
  240. Help identifying components
  241. Odd Block Series 1 6L6 Amp Power Supply
  242. Mesa/Boogie Bass 400+ mod question
  243. Need Help for Improving HEATHKIT AA 151
  244. Troubleshooting help for a neophyte
  245. can cap - rectifier spacing
  246. tube dampers anyone
  247. cnc aluminium chassis for tube amps
  248. Balanced Input as Phase Inverter?
  249. 300B SET amp input sensitivity, Help.
  250. Any thoughts on this circuit?

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