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  1. Laney Tube Fusion 200 series 2 footswitch
  2. Antek AT-070L Specs
  3. Unused tube sections
  4. Rewire Rectifier Sockets for Tube Substitution
  5. Shuguang 300BC
  6. Sn/Pb S-Sn/Cu ...
  7. What and Where is BAF?
  8. CCS plate follower 12bh7 schematic needed pls
  9. 300B DC heaters confusion
  10. Blue Tube Red Plating = Help!
  11. Tube bass preamplifier power supply (Need Help)
  12. Opera Consonance M500 mkii
  13. 6AC7EH Better but different
  14. For that hard to find 5HY 2 amp choke...
  15. Cleaning up an old ST-70 chassis
  16. Accuphase P250 Amplifier Schematic Requred
  17. Pls Help me, this 6C33C pp Schematic is OK?
  18. Loud Noise due to NFB
  19. NAMM Zoo 2011
  20. Recommended O'Scope Reading?
  21. Damage to valve amp when powered up but disconnected to speakers?
  22. preferred resistor type
  23. use more then 'maximum capacitance' after tube rectifier
  24. Headphone Tube Amp D3a
  25. Dared 5.1 tube amp
  26. Designing Transformers with J.C.Maxwell
  27. Cathode resistor calc?
  28. Selector switch question
  29. good circuit to use with Grounded Grid Pre
  30. JJ KT88 tubes glowing bright yellow.
  31. Transistorised-Tubed-Magnetic Amplifier
  32. ST-35 Tube Brands
  33. Where you buy iron transformer core for DIY audio transformer
  34. Improve this SP-11 HV supply?
  35. More Antek Iron
  36. Edcor Transformer Specs
  37. Volume control resistance question? Step Attenuator?
  38. Minimum space between 6V6 tube in Push-Pull Amp
  39. GE Jan 6550a for SET amp?
  40. Chassis mount connector strip
  41. Transformer winding - mysterious!
  42. can anyone identify theses OT markings?
  43. Excessive hum with 1960's amp.
  44. Western Electric/Hickock 600A
  45. Pete Millett Uniamp
  46. cathode resistor sudden rising value on 7591
  47. 7591 cathode resistor unstable
  48. David
  49. Looking for a DHT Pre & Phono design / ideas please
  50. Hi, New member just bought k272a kit from Oatley
  51. Building an amp from scratch - what features would i want
  52. Lafayette LA215 voltage problem !
  53. 12ax7: How to maximize output?
  54. Low voltage tube pre-amp for T-amp
  55. Hybride bipolair amp
  56. Single end amp power supply upgrade
  57. Pentode curves - how to find operating point withoud going crazy?
  58. 6922 into 6H30 socket ?
  59. Headwize 6N1P OTL headphone amp having hum
  60. Need help to calculate R in a CCS!
  61. #40-LL1660-4*2A3
  62. Help with stereo tube amp design from parts
  63. Decoupling cap hum
  64. Plate chokes
  65. Tube output protection
  66. 12EN6 in triode mode...fine ???
  67. used 12at7
  68. Need advise with NFB loop
  69. 1964 Amplifier!!
  70. Very basic grid question????
  71. 12AX7 PULSE
  72. short article about operating points
  73. How is an amp's output measured?
  74. current/cathode feedback
  75. 6N23P, transistor PP hybrid amp project.
  76. Transformer choice for DC heater supply?
  77. Help me with i177 tubetester
  78. HeathKit Euw-15 Tube power Supply failure.
  79. Got unknown tube preamp board, need help!
  80. Ergo-Ella + Budget AVC Do-It-Box
  81. Phono pre amp question.
  82. Zener regulation for fixed-bias supply
  83. hot transformer
  84. H. H. Scott 299C output transformers
  85. decisions fostex and the DIY-K12G budget system..
  86. LTSpice GU19 GU29 6R3S
  87. power transfo as HT choke
  88. Dummy newb needs help with Bogen VP17X
  89. Modding the SAKUA AV200
  90. Anybody use 841s(VT-51)?
  91. Help me make use of these transformers
  92. Wiring Buck Transformer with GE transformer Help!
  93. audio research sp9
  94. WE417A Valve Preamplifier
  95. Hi-Fi Tube Amplifier and more
  96. Radford SC-22 Restoration - Input Transistor Biasing Question
  97. Tube Tester
  98. Looking for off-the-wall oil caps
  99. 805 MonoBlock SE Amp Kit?
  100. Back to back toroids
  101. 6AU6 in CCS circuits
  102. Morgan Jones' RIAA Pre-Amp
  103. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  104. Building an Aikido LV for a headphone amp
  105. What to do with a 6L6-GC?
  106. loose plate caps, hi temp glue???
  107. Power supply question
  108. RCA Line Input Shielding Technique Help
  109. Randall shutting down
  110. Grommes 260A DIY report, questions, suggestions
  111. Line out from tube organ
  112. Minimum Gain Stage Rg Value?
  113. One-half 6H30
  114. Novice In Over His Head
  115. Twisted Heater Wires
  116. Guitar amplifier PSU hum woes
  117. Little Dot MK III - noisy / oscillation?
  118. Rundmaus at work - PP1C without sand
  119. Power transformer for Firefly Amp?
  120. where to start? 2 channel SS/tube bass preamp
  121. mr liang 845
  122. RH84 (EL84) Choke etc...
  123. Gyrator Loaded 12b4A: The Latest Version.
  124. Wood Trimmed Chassis
  125. Sansui BA-303
  126. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  127. hybrid amp with dht or idht inputs?
  128. Balanced to Unbalanced Line Conversion
  129. Headphone amplifier with TH100 tube
  130. Happy New Year - A New Amp to Argue About...
  131. fee-nix, the desktop amp
  132. Any thoughts on what damage I did?
  133. So. Cal. Ham Festival?
  134. zener LTSpice model
  135. Mini-console Schematic
  136. Will this circuit work Ok?
  137. tube CCS below cathodes, startup issues?
  138. Why the wimpy 300B operating points?
  139. can a cathode follower drive a tone stack and an effects loop?
  140. Bench supply ideas
  141. A Newbie Tx Question
  142. Volume Control Help!
  143. Could anyone opine on this circuit?
  144. 5U4 Rectifier. Maximum filter cap value?
  145. Grounding outputs?
  146. Happy holidays folks.
  147. Thermionic diode
  148. Lafayette amp arcing Rectifier problem
  149. ECF801 any good for audio
  150. Harman Kardon Citation II PI question
  151. 6N1P
  152. Need advice for a 93 Fender "The Twin"
  153. Shorted secondary windings of transformer
  154. Toasted my rectifier - need some pointers to troubleshoot
  155. Parallel amp connection to speakers, SS + tube
  156. Loose pin on a JJ 300B
  157. Measuring milliamp with Fluke 771 Clamp Meter Question?
  158. Spice - and Sting is nowhere to be seen...
  159. Realistic Stereo 24
  160. 6N3P-EV measured Ia/Va/Vg curves
  161. Anyone have the Meng Mini X1 amp here?
  162. EL84/6SN7 tube amp
  163. Something Like A 6EU7?
  164. Which 845 amp?
  165. another 12ax7 preamp
  166. SOHA v2 cost
  167. Yarland FV34C-111 Valve substitution
  168. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  169. XiangSheng D-2020-KT88
  170. Edcor vs Electra-Print
  171. adding headphone jack to dynaco pas 3 clone
  172. Revising an old tube preamp section: where to get the knowledge?
  173. 3 Caps parallel to series vs ??? Sonic Performance?
  174. 6CG7 Bias Current?
  175. Output Pentode Screen at half Plate voltage
  176. PP to parallel
  177. Edcor vs Electra-Print
  178. Show off your P2P wiring.
  179. adapting 2 SE boards for a PP driver stage
  180. Freed transformer info needed
  181. Recomended connectors?
  182. COSMOS amp, Japan
  183. Advantage to constant current draw from power supply?
  184. SP9 schematic questions...
  185. Would you rebuild this?
  186. possible advantage to global???
  187. Correct Path: Diodes Or Rectifier Tube?
  188. 6BQ5 Bias Point Help
  189. Old Hammond 1640SE OPT
  190. Copland CVA 306 Can work only with 2 tubes ??
  191. Cleaning Edison Price posts
  192. need help on treble distortion with my EAR834p phono
  193. SE 6CB5A amp with 6N7 driver
  194. McAlister PP150
  195. Standard Input Design Value
  196. Breadboard help
  197. Odd amp built with PL81 / PL36
  198. Has anyone built a 47 SE amp?
  199. Which EL84
  200. First attempt p2p valve power amp
  201. Fundamental Pentode Question
  202. EL34 Triode Mode Resistors
  203. 807 SE Schematic Critiques
  204. Amp for Magneplanar 1.6
  205. After Christmas free time
  206. Tubelab Single Ended Amps
  207. I suppose I am a little dense
  208. 12AU7 SE practise amp project
  209. LED bias with gNFB
  210. Schematic question - what this cap is for ?
  211. Hi fi stereo tube amp through guitar speakers??
  212. Output transformer
  213. 50C5s in PP ?
  214. input resistor on the JE LAB 300B
  215. Sockets for UY 41
  216. Any good tube amp kits for a first attempt?
  217. power supply suggestions and advice
  218. favourite midrange,treble tubes
  219. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  220. suspect a bad tube-any simple checks?
  221. Long-Tailed Pair, pse. share your views...
  222. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  223. Ultralinear but no UL taps.
  224. OPT Question
  225. An Important Dumb Question-Newbie Stuff
  226. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  227. Autobias OTL....Any thoughts?
  228. Valve Line Amp suggestions
  229. another 6c33 se
  230. no sound on the PHONO channel....
  231. What do you think of this cheap tube amplifier?
  232. What guitar amp should I build from these?
  233. EL34 Hickok 439B setup
  234. Hickok 605
  235. Help! Want to Diy Tube Amp!
  236. Anyone care for some troubleshooting? Hum issue
  237. Re-tubing stock ST70
  238. your opinion of this bias problem
  239. paraphase with follower
  240. Noisy transformer
  241. 6BN11 in triode mode...any experience ?
  242. morgan jones:output stages
  243. Dynaco SCA-35 - fan Cooling?
  244. Partridge Vs Edcor
  245. Feedback with a choke ?
  246. Do you have a tube tester?
  247. Level matching?
  248. cascoded bjt ccs - design check please
  249. Hammond Organ amp to guitar amp
  250. Square wave testing......a guitar amp

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