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  1. Grommes 260A DIY report, questions, suggestions
  2. Line out from tube organ
  3. Minimum Gain Stage Rg Value?
  4. One-half 6H30
  5. Novice In Over His Head
  6. Twisted Heater Wires
  7. Little Dot MK III - noisy / oscillation?
  8. Rundmaus at work - PP1C without sand
  9. Power transformer for Firefly Amp?
  10. where to start? 2 channel SS/tube bass preamp
  11. mr liang 845
  12. RH84 (EL84) Choke etc...
  13. Gyrator Loaded 12b4A: The Latest Version.
  14. Wood Trimmed Chassis
  15. Sansui BA-303
  16. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  17. hybrid amp with dht or idht inputs?
  18. Balanced to Unbalanced Line Conversion
  19. Headphone amplifier with TH100 tube
  20. Happy New Year - A New Amp to Argue About...
  21. fee-nix, the desktop amp
  22. Any thoughts on what damage I did?
  23. So. Cal. Ham Festival?
  24. zener LTSpice model
  25. Mini-console Schematic
  26. Will this circuit work Ok?
  27. tube CCS below cathodes, startup issues?
  28. Why the wimpy 300B operating points?
  29. Bench supply ideas
  30. A Newbie Tx Question
  31. Volume Control Help!
  32. Could anyone opine on this circuit?
  33. 5U4 Rectifier. Maximum filter cap value?
  34. Grounding outputs?
  35. Happy holidays folks.
  36. Thermionic diode
  37. Lafayette amp arcing Rectifier problem
  38. ECF801 any good for audio
  39. Harman Kardon Citation II PI question
  40. 6N1P
  41. Shorted secondary windings of transformer
  42. Toasted my rectifier - need some pointers to troubleshoot
  43. Parallel amp connection to speakers, SS + tube
  44. Loose pin on a JJ 300B
  45. Measuring milliamp with Fluke 771 Clamp Meter Question?
  46. Spice - and Sting is nowhere to be seen...
  47. Realistic Stereo 24
  48. 6N3P-EV measured Ia/Va/Vg curves
  49. Anyone have the Meng Mini X1 amp here?
  50. EL84/6SN7 tube amp
  51. Something Like A 6EU7?
  52. Which 845 amp?
  53. another 12ax7 preamp
  54. SOHA v2 cost
  55. Yarland FV34C-111 Valve substitution
  56. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  57. XiangSheng D-2020-KT88
  58. Edcor vs Electra-Print
  59. adding headphone jack to dynaco pas 3 clone
  60. Revising an old tube preamp section: where to get the knowledge?
  61. 3 Caps parallel to series vs ??? Sonic Performance?
  62. 6CG7 Bias Current?
  63. Output Pentode Screen at half Plate voltage
  64. PP to parallel
  65. Edcor vs Electra-Print
  66. Show off your P2P wiring.
  67. adapting 2 SE boards for a PP driver stage
  68. Freed transformer info needed
  69. Recomended connectors?
  70. COSMOS amp, Japan
  71. Advantage to constant current draw from power supply?
  72. SP9 schematic questions...
  73. Would you rebuild this?
  74. possible advantage to global???
  75. Correct Path: Diodes Or Rectifier Tube?
  76. 6BQ5 Bias Point Help
  77. Old Hammond 1640SE OPT
  78. Copland CVA 306 Can work only with 2 tubes ??
  79. Cleaning Edison Price posts
  80. need help on treble distortion with my EAR834p phono
  81. SE 6CB5A amp with 6N7 driver
  82. McAlister PP150
  83. Standard Input Design Value
  84. Breadboard help
  85. Odd amp built with PL81 / PL36
  86. Has anyone built a 47 SE amp?
  87. Which EL84
  88. First attempt p2p valve power amp
  89. Fundamental Pentode Question
  90. EL34 Triode Mode Resistors
  91. 807 SE Schematic Critiques
  92. Amp for Magneplanar 1.6
  93. After Christmas free time
  94. Tubelab Single Ended Amps
  95. I suppose I am a little dense
  96. 12AU7 SE practise amp project
  97. LED bias with gNFB
  98. Schematic question - what this cap is for ?
  99. Output transformer
  100. 50C5s in PP ?
  101. input resistor on the JE LAB 300B
  102. Sockets for UY 41
  103. Any good tube amp kits for a first attempt?
  104. power supply suggestions and advice
  105. favourite midrange,treble tubes
  106. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  107. suspect a bad tube-any simple checks?
  108. Long-Tailed Pair, pse. share your views...
  109. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  110. Ultralinear but no UL taps.
  111. OPT Question
  112. An Important Dumb Question-Newbie Stuff
  113. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  114. Autobias OTL....Any thoughts?
  115. Valve Line Amp suggestions
  116. another 6c33 se
  117. no sound on the PHONO channel....
  118. What do you think of this cheap tube amplifier?
  119. EL34 Hickok 439B setup
  120. Hickok 605
  121. Help! Want to Diy Tube Amp!
  122. Anyone care for some troubleshooting? Hum issue
  123. Re-tubing stock ST70
  124. your opinion of this bias problem
  125. paraphase with follower
  126. Noisy transformer
  127. 6BN11 in triode mode...any experience ?
  128. morgan jones:output stages
  129. Dynaco SCA-35 - fan Cooling?
  130. Partridge Vs Edcor
  131. Feedback with a choke ?
  132. Do you have a tube tester?
  133. Level matching?
  134. cascoded bjt ccs - design check please
  135. help on amp gain structure
  136. iPod/BlackBerry/MP3 input
  137. Shuguang 805 - Advice
  138. Mains Transformer Hums under load
  139. Film Caps in Tube Amps
  140. K12G left channel dead: HELP!
  141. Model 16LS Stereo Integrated Tube Amplifier
  142. Help identifying components
  143. Odd Block Series 1 6L6 Amp Power Supply
  144. Need Help for Improving HEATHKIT AA 151
  145. Troubleshooting help for a neophyte
  146. can cap - rectifier spacing
  147. tube dampers anyone
  148. cnc aluminium chassis for tube amps
  149. Balanced Input as Phase Inverter?
  150. 300B SET amp input sensitivity, Help.
  151. Any thoughts on this circuit?
  152. Will This Work? 26 Linestage
  153. Eico HF-89a question
  154. 100TH Ep-Ip Curve
  155. Power Transformer - Can you use separate tap for screens?
  156. Power supply for PP1C - sanity check
  157. Blue Velvet preamp
  158. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  159. Universal Power Transformer
  160. Tone control in a TubelabSE?
  161. 300B Sweet Spot
  162. Does 81ma sound about right?
  163. Frank's EC8010/6C45P-GM70 SE Interstage.
  164. I need a bit of help to fine tune my PP EL84 amp
  165. IS there any OTL pre amps out there?
  166. Rubycon oil caps
  167. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  168. Project Planning (Steps/Order)
  169. Question about coding on tube
  170. 6H13C OTL using 12 parallel tubes
  171. SE 2 watt clean amp?
  172. Transformers for tweeter amps on ferrite donuts
  173. Noob Help: Converting Thomas organ / Wiring
  174. Vintage power transformers
  175. 1625 pp amp layout - comments invited
  176. Grundig 3028 HELP
  177. Oscillation in hybrid amp, how to solve?
  178. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  179. Audio Note M-Zero remote control problem
  180. SE TESLA E34L
  181. Need help to restore Sansui 500A
  182. Push-Push OTL?
  183. Stereo Circlotron using only two supplies...
  184. Mercury 1000/2000 KT-88 and 6l6 design bug
  185. Has some tried to use E/PL81 in PPP setup
  186. Heatsinks for tubes?
  187. Mechanical Isolation for a Power Transformer
  188. My First Tube Amp Build: S5 K12G
  189. Size does matter!
  190. tubelabSE with 300b
  191. EL509 (JJ) or PL519?
  192. Clone of JTM45
  193. how can i build a Choke?
  194. A new design
  195. My first and last DIY tube amp !
  196. anyone help convert dual volume to single?
  197. 480-0-480vac To Power A SE GM70!??
  198. Triode plate resistance == internal negative feedback?
  199. Quiz: which tube is this?
  200. 6EM7 Headphone Spud - Please comment
  201. replacement tubes
  202. Mengyue Mini EL34B stereo balance issues..
  203. Email Address for Heiner Jakobi ?
  204. A quick tube matching question
  205. 30W triode?
  206. My Project: Pilot 602
  207. Fake glow LED under valve in commercial devices
  208. Unknown PP output transformers
  209. Switching Amp? 25watts WITH OUT tubes or Transistors?!?
  210. Power Supply B+ voltage?
  211. Newby here first post.
  212. Cheap and easy tube amp.
  213. Rate/critique my Dynaco A410 mods..
  214. Hammond 1650n and Dynaco mark III circuit.
  215. A quick safety question
  216. George RE: 26E6WG
  217. Advice for a beginner please..
  218. Balancing the PP cathode bias
  219. Hybrid Circlotron Amplifier with only 3 components on the signal path
  220. PARTRIGE transformer
  221. Western Electric 205D Tube for Preamp?
  222. Does anyone have the PDF for the Plitron 4142 ?
  223. 16sj8
  224. Mumbo-Jumbo and power supply caps
  225. Restoring Baldwin 40 watt amps
  226. LTspice U/L Transformer Symbol
  227. advice please, a setup to characterise opts
  228. 809's in Class B P-P w/feedback
  229. 5-pin plug needed
  230. Shorting Plugs
  231. Simple Audio Generator
  232. SE Amps with Variable Impedance Loads
  233. Linearity
  234. PSU Transformers for 6922 SRPP tube preamp
  235. 6JN8 curves?
  236. 6C6-2A3 Amplifier: Changes for 45?
  237. Which rectifier tubes are still manufactured?
  238. transconductance effect on peak power?
  239. Good Power Resistores ???
  240. Super cheap triode amplifier
  241. OTL designed by Glen Orr AudioXpress
  242. Heater voltages
  243. wire thickness
  244. JC Morrison circuits
  245. Building Valve Amplifier from schematic
  246. CliffUSA VS Cliff UK
  247. WHERE ARE;AND HOW ARE THE HARMONICS GENERATED?
  248. resistors for LT317 heater circuit
  249. Function of R2
  250. balanced input for any amplifier

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