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  1. hybrid amp with dht or idht inputs?
  2. Balanced to Unbalanced Line Conversion
  3. Headphone amplifier with TH100 tube
  4. Happy New Year - A New Amp to Argue About...
  5. fee-nix, the desktop amp
  6. Any thoughts on what damage I did?
  7. So. Cal. Ham Festival?
  8. zener LTSpice model
  9. Mini-console Schematic
  10. Will this circuit work Ok?
  11. tube CCS below cathodes, startup issues?
  12. Why the wimpy 300B operating points?
  13. can a cathode follower drive a tone stack and an effects loop?
  14. Bench supply ideas
  15. A Newbie Tx Question
  16. Volume Control Help!
  17. Could anyone opine on this circuit?
  18. 5U4 Rectifier. Maximum filter cap value?
  19. Grounding outputs?
  20. Happy holidays folks.
  21. Thermionic diode
  22. Lafayette amp arcing Rectifier problem
  23. ECF801 any good for audio
  24. Harman Kardon Citation II PI question
  25. 6N1P
  26. Need advice for a 93 Fender "The Twin"
  27. Shorted secondary windings of transformer
  28. Toasted my rectifier - need some pointers to troubleshoot
  29. Parallel amp connection to speakers, SS + tube
  30. Loose pin on a JJ 300B
  31. Measuring milliamp with Fluke 771 Clamp Meter Question?
  32. Spice - and Sting is nowhere to be seen...
  33. Realistic Stereo 24
  34. 6N3P-EV measured Ia/Va/Vg curves
  35. Anyone have the Meng Mini X1 amp here?
  36. EL84/6SN7 tube amp
  37. Something Like A 6EU7?
  38. Which 845 amp?
  39. another 12ax7 preamp
  40. SOHA v2 cost
  41. Yarland FV34C-111 Valve substitution
  42. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  43. XiangSheng D-2020-KT88
  44. Edcor vs Electra-Print
  45. adding headphone jack to dynaco pas 3 clone
  46. Revising an old tube preamp section: where to get the knowledge?
  47. 3 Caps parallel to series vs ??? Sonic Performance?
  48. 6CG7 Bias Current?
  49. Output Pentode Screen at half Plate voltage
  50. PP to parallel
  51. Edcor vs Electra-Print
  52. Show off your P2P wiring.
  53. adapting 2 SE boards for a PP driver stage
  54. Freed transformer info needed
  55. Recomended connectors?
  56. COSMOS amp, Japan
  57. Advantage to constant current draw from power supply?
  58. SP9 schematic questions...
  59. Would you rebuild this?
  60. possible advantage to global???
  61. Correct Path: Diodes Or Rectifier Tube?
  62. 6BQ5 Bias Point Help
  63. Old Hammond 1640SE OPT
  64. Copland CVA 306 Can work only with 2 tubes ??
  65. Cleaning Edison Price posts
  66. need help on treble distortion with my EAR834p phono
  67. SE 6CB5A amp with 6N7 driver
  68. McAlister PP150
  69. Standard Input Design Value
  70. Breadboard help
  71. Odd amp built with PL81 / PL36
  72. Has anyone built a 47 SE amp?
  73. Which EL84
  74. First attempt p2p valve power amp
  75. Fundamental Pentode Question
  76. EL34 Triode Mode Resistors
  77. 807 SE Schematic Critiques
  78. Amp for Magneplanar 1.6
  79. After Christmas free time
  80. Tubelab Single Ended Amps
  81. I suppose I am a little dense
  82. 12AU7 SE practise amp project
  83. LED bias with gNFB
  84. Schematic question - what this cap is for ?
  85. Hi fi stereo tube amp through guitar speakers??
  86. Output transformer
  87. 50C5s in PP ?
  88. input resistor on the JE LAB 300B
  89. Sockets for UY 41
  90. Any good tube amp kits for a first attempt?
  91. power supply suggestions and advice
  92. favourite midrange,treble tubes
  93. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  94. suspect a bad tube-any simple checks?
  95. Long-Tailed Pair, pse. share your views...
  96. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  97. Ultralinear but no UL taps.
  98. OPT Question
  99. An Important Dumb Question-Newbie Stuff
  100. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  101. Autobias OTL....Any thoughts?
  102. Valve Line Amp suggestions
  103. another 6c33 se
  104. no sound on the PHONO channel....
  105. What do you think of this cheap tube amplifier?
  106. What guitar amp should I build from these?
  107. EL34 Hickok 439B setup
  108. Hickok 605
  109. Help! Want to Diy Tube Amp!
  110. Anyone care for some troubleshooting? Hum issue
  111. Re-tubing stock ST70
  112. your opinion of this bias problem
  113. paraphase with follower
  114. Noisy transformer
  115. 6BN11 in triode mode...any experience ?
  116. morgan jones:output stages
  117. Dynaco SCA-35 - fan Cooling?
  118. Partridge Vs Edcor
  119. Feedback with a choke ?
  120. Do you have a tube tester?
  121. Level matching?
  122. cascoded bjt ccs - design check please
  123. Hammond Organ amp to guitar amp
  124. Square wave testing......a guitar amp
  125. help on amp gain structure
  126. iPod/BlackBerry/MP3 input
  127. Shuguang 805 - Advice
  128. Mains Transformer Hums under load
  129. Film Caps in Tube Amps
  130. K12G left channel dead: HELP!
  131. Model 16LS Stereo Integrated Tube Amplifier
  132. Help identifying components
  133. Odd Block Series 1 6L6 Amp Power Supply
  134. Mesa/Boogie Bass 400+ mod question
  135. Need Help for Improving HEATHKIT AA 151
  136. Troubleshooting help for a neophyte
  137. can cap - rectifier spacing
  138. tube dampers anyone
  139. cnc aluminium chassis for tube amps
  140. Balanced Input as Phase Inverter?
  141. 300B SET amp input sensitivity, Help.
  142. Any thoughts on this circuit?
  143. Will This Work? 26 Linestage
  144. Eico HF-89a question
  145. 100TH Ep-Ip Curve
  146. Power Transformer - Can you use separate tap for screens?
  147. Power supply for PP1C - sanity check
  148. Blue Velvet preamp
  149. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  150. Universal Power Transformer
  151. Tone control in a TubelabSE?
  152. 300B Sweet Spot
  153. Does 81ma sound about right?
  154. Frank's EC8010/6C45P-GM70 SE Interstage.
  155. I need a bit of help to fine tune my PP EL84 amp
  156. IS there any OTL pre amps out there?
  157. Rubycon oil caps
  158. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  159. Project Planning (Steps/Order)
  160. Question about coding on tube
  161. 6H13C OTL using 12 parallel tubes
  162. SE 2 watt clean amp?
  163. Transformers for tweeter amps on ferrite donuts
  164. Noob Help: Converting Thomas organ / Wiring
  165. Vintage power transformers
  166. 1625 pp amp layout - comments invited
  167. Grundig 3028 HELP
  168. Oscillation in hybrid amp, how to solve?
  169. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  170. Audio Note M-Zero remote control problem
  171. SE TESLA E34L
  172. Need help to restore Sansui 500A
  173. Push-Push OTL?
  174. Stereo Circlotron using only two supplies...
  175. Mercury 1000/2000 KT-88 and 6l6 design bug
  176. Has some tried to use E/PL81 in PPP setup
  177. Heatsinks for tubes?
  178. Mechanical Isolation for a Power Transformer
  179. My First Tube Amp Build: S5 K12G
  180. Size does matter!
  181. tubelabSE with 300b
  182. EL509 (JJ) or PL519?
  183. Clone of JTM45
  184. how can i build a Choke?
  185. A new design
  186. My first and last DIY tube amp !
  187. anyone help convert dual volume to single?
  188. 480-0-480vac To Power A SE GM70!??
  189. Triode plate resistance == internal negative feedback?
  190. Quiz: which tube is this?
  191. 6EM7 Headphone Spud - Please comment
  192. replacement tubes
  193. Mengyue Mini EL34B stereo balance issues..
  194. Email Address for Heiner Jakobi ?
  195. A quick tube matching question
  196. 30W triode?
  197. My Project: Pilot 602
  198. Fake glow LED under valve in commercial devices
  199. Unknown PP output transformers
  200. Switching Amp? 25watts WITH OUT tubes or Transistors?!?
  201. Power Supply B+ voltage?
  202. Newby here first post.
  203. Cheap and easy tube amp.
  204. Rate/critique my Dynaco A410 mods..
  205. Hammond 1650n and Dynaco mark III circuit.
  206. A quick safety question
  207. George RE: 26E6WG
  208. Advice for a beginner please..
  209. Balancing the PP cathode bias
  210. Hybrid Circlotron Amplifier with only 3 components on the signal path
  211. PARTRIGE transformer
  212. Western Electric 205D Tube for Preamp?
  213. Does anyone have the PDF for the Plitron 4142 ?
  214. 16sj8
  215. Mumbo-Jumbo and power supply caps
  216. Restoring Baldwin 40 watt amps
  217. LTspice U/L Transformer Symbol
  218. advice please, a setup to characterise opts
  219. 809's in Class B P-P w/feedback
  220. 5-pin plug needed
  221. Shorting Plugs
  222. Simple Audio Generator
  223. SE Amps with Variable Impedance Loads
  224. Linearity
  225. PSU Transformers for 6922 SRPP tube preamp
  226. 6JN8 curves?
  227. 6C6-2A3 Amplifier: Changes for 45?
  228. Which rectifier tubes are still manufactured?
  229. transconductance effect on peak power?
  230. Good Power Resistores ???
  231. Super cheap triode amplifier
  232. OTL designed by Glen Orr AudioXpress
  233. Heater voltages
  234. wire thickness
  235. JC Morrison circuits
  236. Building Valve Amplifier from schematic
  237. CliffUSA VS Cliff UK
  238. WHERE ARE;AND HOW ARE THE HARMONICS GENERATED?
  239. resistors for LT317 heater circuit
  240. Function of R2
  241. balanced input for any amplifier
  242. Spect output peak to peak for 807 SE ul
  243. HK Citation II Output Transformer Data ???
  244. Looking to purchase non-working output transformers
  245. metals!
  246. Another 2A3 build
  247. where r crossline master volumes from?
  248. Output Audio Transformer Impedance
  249. The echo effect of a headphone AMP
  250. flexy -a multirole driver/preamp-

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