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  1. Why not 6C41C used in OTL??
  2. 6p14p(EL84) SE with 6n6p build jurnal
  3. Oscilloscope - Which one should I get ? What to look for?
  4. "Jonokuchi" - new desktop amp, or "Little red board"?
  5. Robust Driver stage recommendations
  6. Wireless World valve articles from the past
  7. Overshoot and Ringing
  8. Harman Kardon A50K
  9. HiFi Tube amp project
  10. Submitted for your (dis) approval, OTL, Autobias Inv. Futterman
  11. Tone control - good diagram needed
  12. Dolby AC3 coming on nicely.
  13. Power Supply Question
  14. Dynatuner FM-1 Restoration
  15. faulty audioromy 6550 no output and very faith sound please help
  16. just one tube preamp or driver
  17. Power triode preamp a different way
  18. 49.95 Tube amp?!
  19. Which cap for the Musical Machine?
  20. How much power do I need in the kitchen?
  21. Grounding check for SE 300B amp
  22. Suggest me a build for HD600 headphones
  23. 6BQ5 Screen Voltage Regulator
  24. 6SN7 Tubes
  25. My first tube Amplifier VT4C DIY record
  26. Amplifier output wattage test
  27. Troubble shooting help please.....
  28. Heater Wiring
  29. 220/110 step down in reverse ... and more
  30. Input Level Devil please help
  31. Soft start for a preamp?
  32. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  33. Using one KT77 and one EL34 per side?
  34. Help identifying transformer wires.
  35. tube pre and tube power amp
  36. Spice Models for Tubes w Screen Grid by Gurski
  37. Transformer abuse or other use
  38. aikido heater voltage
  39. HY51Z datasheet, help !!!
  40. 6L6 amp with unique phase splitter - check my math
  41. Dynaco A451 Output Transformer
  42. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  43. 6AU6 preamp problem
  44. Help identifying a Telefunken(?) tube...
  45. UCC85 and e-pay
  46. Lundahl LL1676 - missing data
  47. valve phono pre-amp HELP needed
  48. Preamp pcb
  49. Strange Problem In Tube Amp Build
  50. Output transformer question
  51. Replacing ECL86/6GW8 to PCL86(14GW8)???
  52. On or Off?
  53. Neg-Feedback into Grid of gain stage instead of cathode?
  54. Accuphase F-25 Japanese manual translation help!
  55. Negative supply with CT tranny
  56. E130L SE again
  57. tony builds a 7N7 preamp
  58. Tango 10429 78% Nickle Output Transformer?
  59. Bias for Ipod Input
  60. What about this driver????
  61. allen organ amp 75
  62. Needs help Tubezone Poseidon
  63. Lightbulb trick on filament circuit?
  64. AMC CVT3030a Help for repair
  65. TF110-48/UL in the UK?
  66. hum in pas2
  67. Aikido Cathode Follwer Question
  68. Question Regarding a Partial Feedback 807 SE
  69. Leftover transformers
  70. Newbie "In Search of help"
  71. ELL80/ECLL800 Cathode follower
  72. The "Tube" bookshelf
  73. knight KG-240? low output help
  74. JE lab 2a3 , fizzy, squeal in one channel, help
  75. Trouble with a DIY EL34 Tube Amp Kit
  76. SPICE Transformer Model Spreadsheet
  77. Choosing the right triode as a Phase Inverter
  78. toob noob with GE 5670 and I'd like to do something with it. Help?
  79. my first tube amp, no tubes...
  80. Enough heat to power my CD player...
  81. My first tube amp: 6C33C
  82. S5 16LS kit as a first DIY tube build?
  83. lady day we 91 psu mod help
  84. On days like these ...
  85. The Magnetron - A Low Noise, Long Life Amplifier????
  86. 6M11's
  87. DC coupled 300B idea - request for comments
  88. Fisher bias
  89. How does anode voltage swing to twice HT voltage?
  90. Can a 7625 Ceramic Planar Triode be soldered ?
  91. AMI "DD" Project: 6L6
  92. Plate loading questions
  93. EZ81 rectifier
  94. PY500a
  95. Tube Regulator Thoughts?
  96. Fully balanced from cartridge to loudspeaker - a little help needed!
  97. OPT on the speaker side?
  98. tube circuit conversions?
  99. Current inrush limiter suggestions
  100. Repair of Philips EL6416 amplifiers.
  101. GU-19 In priboi
  102. Duncan Amps PSU Designer II
  103. using existing pre with this circuit
  104. Antek AT-070L Specs
  105. Unused tube sections
  106. Rewire Rectifier Sockets for Tube Substitution
  107. Shuguang 300BC
  108. Sn/Pb S-Sn/Cu ...
  109. What and Where is BAF?
  110. CCS plate follower 12bh7 schematic needed pls
  111. 300B DC heaters confusion
  112. Blue Tube Red Plating = Help!
  113. Tube bass preamplifier power supply (Need Help)
  114. Opera Consonance M500 mkii
  115. 6AC7EH Better but different
  116. For that hard to find 5HY 2 amp choke...
  117. Cleaning up an old ST-70 chassis
  118. Accuphase P250 Amplifier Schematic Requred
  119. Pls Help me, this 6C33C pp Schematic is OK?
  120. Loud Noise due to NFB
  121. NAMM Zoo 2011
  122. Damage to valve amp when powered up but disconnected to speakers?
  123. use more then 'maximum capacitance' after tube rectifier
  124. Headphone Tube Amp D3a
  125. Dared 5.1 tube amp
  126. Designing Transformers with J.C.Maxwell
  127. Cathode resistor calc?
  128. good circuit to use with Grounded Grid Pre
  129. JJ KT88 tubes glowing bright yellow.
  130. Transistorised-Tubed-Magnetic Amplifier
  131. ST-35 Tube Brands
  132. Where you buy iron transformer core for DIY audio transformer
  133. Improve this SP-11 HV supply?
  134. More Antek Iron
  135. Edcor Transformer Specs
  136. Volume control resistance question? Step Attenuator?
  137. Minimum space between 6V6 tube in Push-Pull Amp
  138. GE Jan 6550a for SET amp?
  139. Chassis mount connector strip
  140. Transformer winding - mysterious!
  141. can anyone identify theses OT markings?
  142. Excessive hum with 1960's amp.
  143. Western Electric/Hickock 600A
  144. Pete Millett Uniamp
  145. cathode resistor sudden rising value on 7591
  146. 7591 cathode resistor unstable
  147. David
  148. Looking for a DHT Pre & Phono design / ideas please
  149. Hi, New member just bought k272a kit from Oatley
  150. Building an amp from scratch - what features would i want
  151. Lafayette LA215 voltage problem !
  152. 12ax7: How to maximize output?
  153. Low voltage tube pre-amp for T-amp
  154. Hybrid bipolar amp
  155. Single end amp power supply upgrade
  156. Pentode curves - how to find operating point withoud going crazy?
  157. 6922 into 6H30 socket ?
  158. Headwize 6N1P OTL headphone amp having hum
  159. Need help to calculate R in a CCS!
  160. #40-LL1660-4*2A3
  161. Help with stereo tube amp design from parts
  162. Decoupling cap hum
  163. Plate chokes
  164. Tube output protection
  165. 12EN6 in triode mode...fine ???
  166. used 12at7
  167. Need advise with NFB loop
  168. Very basic grid question????
  169. 12AX7 PULSE
  170. short article about operating points
  171. How is an amp's output measured?
  172. current/cathode feedback
  173. 6N23P, transistor PP hybrid amp project.
  174. Transformer choice for DC heater supply?
  175. Help me with i177 tubetester
  176. HeathKit Euw-15 Tube power Supply failure.
  177. Got unknown tube preamp board, need help!
  178. Ergo-Ella + Budget AVC Do-It-Box
  179. Phono pre amp question.
  180. Zener regulation for fixed-bias supply
  181. hot transformer
  182. H. H. Scott 299C output transformers
  183. decisions fostex and the DIY-K12G budget system..
  184. LTSpice GU19 GU29 6R3S
  185. power transfo as HT choke
  186. Dummy newb needs help with Bogen VP17X
  187. Modding the SAKUA AV200
  188. Anybody use 841s(VT-51)?
  189. Help me make use of these transformers
  190. Wiring Buck Transformer with GE transformer Help!
  191. audio research sp9
  192. WE417A Valve Preamplifier
  193. Hi-Fi Tube Amplifier and more
  194. Radford SC-22 Restoration - Input Transistor Biasing Question
  195. 805 MonoBlock SE Amp Kit?
  196. Back to back toroids
  197. 6AU6 in CCS circuits
  198. Morgan Jones' RIAA Pre-Amp
  199. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  200. Building an Aikido LV for a headphone amp
  201. What to do with a 6L6-GC?
  202. loose plate caps, hi temp glue???
  203. Power supply question
  204. RCA Line Input Shielding Technique Help
  205. Grommes 260A DIY report, questions, suggestions
  206. Minimum Gain Stage Rg Value?
  207. One-half 6H30
  208. Novice In Over His Head
  209. Twisted Heater Wires
  210. Little Dot MK III - noisy / oscillation?
  211. Rundmaus at work - PP1C without sand
  212. where to start? 2 channel SS/tube bass preamp
  213. mr liang 845
  214. RH84 (EL84) Choke etc...
  215. Gyrator Loaded 12b4A: The Latest Version.
  216. Wood Trimmed Chassis
  217. Sansui BA-303
  218. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  219. hybrid amp with dht or idht inputs?
  220. Balanced to Unbalanced Line Conversion
  221. Headphone amplifier with TH100 tube
  222. Happy New Year - A New Amp to Argue About...
  223. fee-nix, the desktop amp
  224. Any thoughts on what damage I did?
  225. So. Cal. Ham Festival?
  226. zener LTSpice model
  227. Mini-console Schematic
  228. Will this circuit work Ok?
  229. tube CCS below cathodes, startup issues?
  230. Why the wimpy 300B operating points?
  231. Bench supply ideas
  232. A Newbie Tx Question
  233. Volume Control Help!
  234. Could anyone opine on this circuit?
  235. 5U4 Rectifier. Maximum filter cap value?
  236. Grounding outputs?
  237. Happy holidays folks.
  238. Thermionic diode
  239. Lafayette amp arcing Rectifier problem
  240. ECF801 any good for audio
  241. Harman Kardon Citation II PI question
  242. 6N1P
  243. Shorted secondary windings of transformer
  244. Toasted my rectifier - need some pointers to troubleshoot
  245. Parallel amp connection to speakers, SS + tube
  246. Loose pin on a JJ 300B
  247. Measuring milliamp with Fluke 771 Clamp Meter Question?
  248. Spice - and Sting is nowhere to be seen...
  249. Realistic Stereo 24
  250. 6N3P-EV measured Ia/Va/Vg curves

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