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  1. aikido heater voltage
  2. HY51Z datasheet, help !!!
  3. 6L6 amp with unique phase splitter - check my math
  4. Dynaco A451 Output Transformer
  5. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  6. 6AU6 preamp problem
  7. Help identifying a Telefunken(?) tube...
  8. UCC85 and e-pay
  9. Lundahl LL1676 - missing data
  10. valve phono pre-amp HELP needed
  11. Preamp pcb
  12. ECL82 pp guitar amp project
  13. Strange Problem In Tube Amp Build
  14. Output transformer question
  15. Replacing ECL86/6GW8 to PCL86(14GW8)???
  16. On or Off?
  17. Neg-Feedback into Grid of gain stage instead of cathode?
  18. Accuphase F-25 Japanese manual translation help!
  19. Negative supply with CT tranny
  20. E130L SE again
  21. tony builds a 7N7 preamp
  22. Tango 10429 78% Nickle Output Transformer?
  23. Bias for Ipod Input
  24. What about this driver????
  25. allen organ amp 75
  26. Needs help Tubezone Poseidon
  27. Lightbulb trick on filament circuit?
  28. AMC CVT3030a Help for repair
  29. TF110-48/UL in the UK?
  30. hum in pas2
  31. Aikido Cathode Follwer Question
  32. 12AX7 tube preamplifier for bass guitar (Need help)
  33. Fuses...what's the deal?
  34. Question Regarding a Partial Feedback 807 SE
  35. Preamp issue on Fender Blues Jr.
  36. Leftover transformers
  37. Newbie "In Search of help"
  38. ELL80/ECLL800 Cathode follower
  39. The "Tube" bookshelf
  40. knight KG-240? low output help
  41. Reverb trouble-Schematic reading help needed
  42. Vacuum tube VCO
  43. JE lab 2a3 , fizzy, squeal in one channel, help
  44. Trouble with a DIY EL34 Tube Amp Kit
  45. SPICE Transformer Model Spreadsheet
  46. Choosing the right triode as a Phase Inverter
  47. toob noob with GE 5670 and I'd like to do something with it. Help?
  48. my first tube amp, no tubes...
  49. Enough heat to power my CD player...
  50. My first tube amp: 6C33C
  51. S5 16LS kit as a first DIY tube build?
  52. lady day we 91 psu mod help
  53. On days like these ...
  54. The Magnetron - A Low Noise, Long Life Amplifier????
  55. 6M11's
  56. DC coupled 300B idea - request for comments
  57. Fisher bias
  58. How does anode voltage swing to twice HT voltage?
  59. Can a 7625 Ceramic Planar Triode be soldered ?
  60. AMI "DD" Project: 6L6
  61. Plate loading questions
  62. EZ81 rectifier
  63. PY500a
  64. Tube Regulator Thoughts?
  65. Fully balanced from cartridge to loudspeaker - a little help needed!
  66. OPT on the speaker side?
  67. tube circuit conversions?
  68. Current inrush limiter suggestions
  69. Repair of Philips EL6416 amplifiers.
  70. GU-19 In priboi
  71. Duncan Amps PSU Designer II
  72. Troubleshoot help for vibrato type problem
  73. using existing pre with this circuit
  74. Laney Tube Fusion 200 series 2 footswitch
  75. Antek AT-070L Specs
  76. Unused tube sections
  77. Rewire Rectifier Sockets for Tube Substitution
  78. Shuguang 300BC
  79. Sn/Pb S-Sn/Cu ...
  80. What and Where is BAF?
  81. CCS plate follower 12bh7 schematic needed pls
  82. 300B DC heaters confusion
  83. Blue Tube Red Plating = Help!
  84. Tube bass preamplifier power supply (Need Help)
  85. Opera Consonance M500 mkii
  86. 6AC7EH Better but different
  87. For that hard to find 5HY 2 amp choke...
  88. Cleaning up an old ST-70 chassis
  89. Accuphase P250 Amplifier Schematic Requred
  90. Pls Help me, this 6C33C pp Schematic is OK?
  91. Loud Noise due to NFB
  92. NAMM Zoo 2011
  93. Recommended O'Scope Reading?
  94. Damage to valve amp when powered up but disconnected to speakers?
  95. preferred resistor type
  96. use more then 'maximum capacitance' after tube rectifier
  97. Headphone Tube Amp D3a
  98. Dared 5.1 tube amp
  99. Designing Transformers with J.C.Maxwell
  100. Cathode resistor calc?
  101. Selector switch question
  102. good circuit to use with Grounded Grid Pre
  103. JJ KT88 tubes glowing bright yellow.
  104. Transistorised-Tubed-Magnetic Amplifier
  105. ST-35 Tube Brands
  106. Where you buy iron transformer core for DIY audio transformer
  107. Improve this SP-11 HV supply?
  108. More Antek Iron
  109. Edcor Transformer Specs
  110. Volume control resistance question? Step Attenuator?
  111. Minimum space between 6V6 tube in Push-Pull Amp
  112. GE Jan 6550a for SET amp?
  113. Chassis mount connector strip
  114. Transformer winding - mysterious!
  115. can anyone identify theses OT markings?
  116. Excessive hum with 1960's amp.
  117. Western Electric/Hickock 600A
  118. Pete Millett Uniamp
  119. cathode resistor sudden rising value on 7591
  120. 7591 cathode resistor unstable
  121. David
  122. Looking for a DHT Pre & Phono design / ideas please
  123. Hi, New member just bought k272a kit from Oatley
  124. Building an amp from scratch - what features would i want
  125. Lafayette LA215 voltage problem !
  126. 12ax7: How to maximize output?
  127. Low voltage tube pre-amp for T-amp
  128. Hybride bipolair amp
  129. Single end amp power supply upgrade
  130. Pentode curves - how to find operating point withoud going crazy?
  131. 6922 into 6H30 socket ?
  132. Headwize 6N1P OTL headphone amp having hum
  133. Need help to calculate R in a CCS!
  134. #40-LL1660-4*2A3
  135. Help with stereo tube amp design from parts
  136. Decoupling cap hum
  137. Plate chokes
  138. Tube output protection
  139. 12EN6 in triode mode...fine ???
  140. used 12at7
  141. Need advise with NFB loop
  142. 1964 Amplifier!!
  143. Very basic grid question????
  144. 12AX7 PULSE
  145. short article about operating points
  146. How is an amp's output measured?
  147. current/cathode feedback
  148. 6N23P, transistor PP hybrid amp project.
  149. Transformer choice for DC heater supply?
  150. Help me with i177 tubetester
  151. HeathKit Euw-15 Tube power Supply failure.
  152. Got unknown tube preamp board, need help!
  153. Ergo-Ella + Budget AVC Do-It-Box
  154. Phono pre amp question.
  155. Zener regulation for fixed-bias supply
  156. hot transformer
  157. H. H. Scott 299C output transformers
  158. decisions fostex and the DIY-K12G budget system..
  159. LTSpice GU19 GU29 6R3S
  160. power transfo as HT choke
  161. Dummy newb needs help with Bogen VP17X
  162. Modding the SAKUA AV200
  163. Anybody use 841s(VT-51)?
  164. Help me make use of these transformers
  165. Wiring Buck Transformer with GE transformer Help!
  166. audio research sp9
  167. WE417A Valve Preamplifier
  168. Hi-Fi Tube Amplifier and more
  169. Radford SC-22 Restoration - Input Transistor Biasing Question
  170. Tube Tester
  171. Looking for off-the-wall oil caps
  172. 805 MonoBlock SE Amp Kit?
  173. Back to back toroids
  174. 6AU6 in CCS circuits
  175. Morgan Jones' RIAA Pre-Amp
  176. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  177. Building an Aikido LV for a headphone amp
  178. What to do with a 6L6-GC?
  179. loose plate caps, hi temp glue???
  180. Power supply question
  181. RCA Line Input Shielding Technique Help
  182. Randall shutting down
  183. Grommes 260A DIY report, questions, suggestions
  184. Line out from tube organ
  185. Minimum Gain Stage Rg Value?
  186. One-half 6H30
  187. Novice In Over His Head
  188. Twisted Heater Wires
  189. Guitar amplifier PSU hum woes
  190. Little Dot MK III - noisy / oscillation?
  191. Rundmaus at work - PP1C without sand
  192. Power transformer for Firefly Amp?
  193. where to start? 2 channel SS/tube bass preamp
  194. mr liang 845
  195. RH84 (EL84) Choke etc...
  196. Gyrator Loaded 12b4A: The Latest Version.
  197. Wood Trimmed Chassis
  198. Sansui BA-303
  199. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  200. hybrid amp with dht or idht inputs?
  201. Balanced to Unbalanced Line Conversion
  202. Headphone amplifier with TH100 tube
  203. Happy New Year - A New Amp to Argue About...
  204. fee-nix, the desktop amp
  205. Any thoughts on what damage I did?
  206. So. Cal. Ham Festival?
  207. zener LTSpice model
  208. Mini-console Schematic
  209. Will this circuit work Ok?
  210. tube CCS below cathodes, startup issues?
  211. Why the wimpy 300B operating points?
  212. can a cathode follower drive a tone stack and an effects loop?
  213. Bench supply ideas
  214. A Newbie Tx Question
  215. Volume Control Help!
  216. Could anyone opine on this circuit?
  217. 5U4 Rectifier. Maximum filter cap value?
  218. Grounding outputs?
  219. Happy holidays folks.
  220. Thermionic diode
  221. Lafayette amp arcing Rectifier problem
  222. ECF801 any good for audio
  223. Harman Kardon Citation II PI question
  224. 6N1P
  225. Need advice for a 93 Fender "The Twin"
  226. Shorted secondary windings of transformer
  227. Toasted my rectifier - need some pointers to troubleshoot
  228. Parallel amp connection to speakers, SS + tube
  229. Loose pin on a JJ 300B
  230. Measuring milliamp with Fluke 771 Clamp Meter Question?
  231. Spice - and Sting is nowhere to be seen...
  232. Realistic Stereo 24
  233. 6N3P-EV measured Ia/Va/Vg curves
  234. Anyone have the Meng Mini X1 amp here?
  235. EL84/6SN7 tube amp
  236. Something Like A 6EU7?
  237. Which 845 amp?
  238. another 12ax7 preamp
  239. SOHA v2 cost
  240. Yarland FV34C-111 Valve substitution
  241. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  242. XiangSheng D-2020-KT88
  243. Edcor vs Electra-Print
  244. adding headphone jack to dynaco pas 3 clone
  245. Revising an old tube preamp section: where to get the knowledge?
  246. 3 Caps parallel to series vs ??? Sonic Performance?
  247. 6CG7 Bias Current?
  248. Output Pentode Screen at half Plate voltage
  249. PP to parallel
  250. Edcor vs Electra-Print

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