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  1. Little Dot MK III - noisy / oscillation?
  2. Rundmaus at work - PP1C without sand
  3. Power transformer for Firefly Amp?
  4. where to start? 2 channel SS/tube bass preamp
  5. mr liang 845
  6. RH84 (EL84) Choke etc...
  7. Gyrator Loaded 12b4A: The Latest Version.
  8. Wood Trimmed Chassis
  9. Sansui BA-303
  10. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  11. hybrid amp with dht or idht inputs?
  12. Balanced to Unbalanced Line Conversion
  13. Headphone amplifier with TH100 tube
  14. Happy New Year - A New Amp to Argue About...
  15. fee-nix, the desktop amp
  16. Any thoughts on what damage I did?
  17. So. Cal. Ham Festival?
  18. zener LTSpice model
  19. Mini-console Schematic
  20. Will this circuit work Ok?
  21. tube CCS below cathodes, startup issues?
  22. Why the wimpy 300B operating points?
  23. can a cathode follower drive a tone stack and an effects loop?
  24. Bench supply ideas
  25. A Newbie Tx Question
  26. Volume Control Help!
  27. Could anyone opine on this circuit?
  28. 5U4 Rectifier. Maximum filter cap value?
  29. Grounding outputs?
  30. Happy holidays folks.
  31. Thermionic diode
  32. Lafayette amp arcing Rectifier problem
  33. ECF801 any good for audio
  34. Harman Kardon Citation II PI question
  35. 6N1P
  36. Need advice for a 93 Fender "The Twin"
  37. Shorted secondary windings of transformer
  38. Toasted my rectifier - need some pointers to troubleshoot
  39. Parallel amp connection to speakers, SS + tube
  40. Loose pin on a JJ 300B
  41. Measuring milliamp with Fluke 771 Clamp Meter Question?
  42. Spice - and Sting is nowhere to be seen...
  43. Realistic Stereo 24
  44. 6N3P-EV measured Ia/Va/Vg curves
  45. Anyone have the Meng Mini X1 amp here?
  46. EL84/6SN7 tube amp
  47. Something Like A 6EU7?
  48. Which 845 amp?
  49. another 12ax7 preamp
  50. SOHA v2 cost
  51. Yarland FV34C-111 Valve substitution
  52. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  53. XiangSheng D-2020-KT88
  54. Edcor vs Electra-Print
  55. adding headphone jack to dynaco pas 3 clone
  56. Revising an old tube preamp section: where to get the knowledge?
  57. 3 Caps parallel to series vs ??? Sonic Performance?
  58. 6CG7 Bias Current?
  59. Output Pentode Screen at half Plate voltage
  60. PP to parallel
  61. Edcor vs Electra-Print
  62. Show off your P2P wiring.
  63. adapting 2 SE boards for a PP driver stage
  64. Freed transformer info needed
  65. Recomended connectors?
  66. COSMOS amp, Japan
  67. Advantage to constant current draw from power supply?
  68. SP9 schematic questions...
  69. Would you rebuild this?
  70. possible advantage to global???
  71. Correct Path: Diodes Or Rectifier Tube?
  72. 6BQ5 Bias Point Help
  73. Old Hammond 1640SE OPT
  74. Copland CVA 306 Can work only with 2 tubes ??
  75. Cleaning Edison Price posts
  76. need help on treble distortion with my EAR834p phono
  77. SE 6CB5A amp with 6N7 driver
  78. McAlister PP150
  79. Standard Input Design Value
  80. Breadboard help
  81. Odd amp built with PL81 / PL36
  82. Has anyone built a 47 SE amp?
  83. Which EL84
  84. First attempt p2p valve power amp
  85. Fundamental Pentode Question
  86. EL34 Triode Mode Resistors
  87. 807 SE Schematic Critiques
  88. Amp for Magneplanar 1.6
  89. After Christmas free time
  90. Tubelab Single Ended Amps
  91. I suppose I am a little dense
  92. 12AU7 SE practise amp project
  93. LED bias with gNFB
  94. Schematic question - what this cap is for ?
  95. Hi fi stereo tube amp through guitar speakers??
  96. Output transformer
  97. 50C5s in PP ?
  98. input resistor on the JE LAB 300B
  99. Sockets for UY 41
  100. Any good tube amp kits for a first attempt?
  101. power supply suggestions and advice
  102. favourite midrange,treble tubes
  103. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  104. suspect a bad tube-any simple checks?
  105. Long-Tailed Pair, pse. share your views...
  106. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  107. Ultralinear but no UL taps.
  108. OPT Question
  109. An Important Dumb Question-Newbie Stuff
  110. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  111. Autobias OTL....Any thoughts?
  112. Valve Line Amp suggestions
  113. another 6c33 se
  114. no sound on the PHONO channel....
  115. What do you think of this cheap tube amplifier?
  116. What guitar amp should I build from these?
  117. EL34 Hickok 439B setup
  118. Hickok 605
  119. Help! Want to Diy Tube Amp!
  120. Anyone care for some troubleshooting? Hum issue
  121. Re-tubing stock ST70
  122. your opinion of this bias problem
  123. paraphase with follower
  124. Noisy transformer
  125. 6BN11 in triode mode...any experience ?
  126. morgan jones:output stages
  127. Dynaco SCA-35 - fan Cooling?
  128. Partridge Vs Edcor
  129. Feedback with a choke ?
  130. Do you have a tube tester?
  131. Level matching?
  132. cascoded bjt ccs - design check please
  133. Hammond Organ amp to guitar amp
  134. Square wave testing......a guitar amp
  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. Mesa/Boogie Bass 400+ mod question
  145. Need Help for Improving HEATHKIT AA 151
  146. Troubleshooting help for a neophyte
  147. can cap - rectifier spacing
  148. tube dampers anyone
  149. cnc aluminium chassis for tube amps
  150. Balanced Input as Phase Inverter?
  151. 300B SET amp input sensitivity, Help.
  152. Any thoughts on this circuit?
  153. Will This Work? 26 Linestage
  154. Eico HF-89a question
  155. 100TH Ep-Ip Curve
  156. Power Transformer - Can you use separate tap for screens?
  157. Power supply for PP1C - sanity check
  158. Blue Velvet preamp
  159. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  160. Universal Power Transformer
  161. Tone control in a TubelabSE?
  162. 300B Sweet Spot
  163. Does 81ma sound about right?
  164. Frank's EC8010/6C45P-GM70 SE Interstage.
  165. I need a bit of help to fine tune my PP EL84 amp
  166. IS there any OTL pre amps out there?
  167. Rubycon oil caps
  168. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  169. Project Planning (Steps/Order)
  170. Question about coding on tube
  171. 6H13C OTL using 12 parallel tubes
  172. SE 2 watt clean amp?
  173. Transformers for tweeter amps on ferrite donuts
  174. Noob Help: Converting Thomas organ / Wiring
  175. Vintage power transformers
  176. 1625 pp amp layout - comments invited
  177. Grundig 3028 HELP
  178. Oscillation in hybrid amp, how to solve?
  179. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  180. Audio Note M-Zero remote control problem
  181. SE TESLA E34L
  182. Need help to restore Sansui 500A
  183. Push-Push OTL?
  184. Stereo Circlotron using only two supplies...
  185. Mercury 1000/2000 KT-88 and 6l6 design bug
  186. Has some tried to use E/PL81 in PPP setup
  187. Heatsinks for tubes?
  188. Mechanical Isolation for a Power Transformer
  189. My First Tube Amp Build: S5 K12G
  190. Size does matter!
  191. tubelabSE with 300b
  192. EL509 (JJ) or PL519?
  193. Clone of JTM45
  194. how can i build a Choke?
  195. A new design
  196. My first and last DIY tube amp !
  197. anyone help convert dual volume to single?
  198. 480-0-480vac To Power A SE GM70!??
  199. Triode plate resistance == internal negative feedback?
  200. Quiz: which tube is this?
  201. 6EM7 Headphone Spud - Please comment
  202. replacement tubes
  203. Mengyue Mini EL34B stereo balance issues..
  204. Email Address for Heiner Jakobi ?
  205. A quick tube matching question
  206. 30W triode?
  207. My Project: Pilot 602
  208. Fake glow LED under valve in commercial devices
  209. Unknown PP output transformers
  210. Switching Amp? 25watts WITH OUT tubes or Transistors?!?
  211. Power Supply B+ voltage?
  212. Newby here first post.
  213. Cheap and easy tube amp.
  214. Rate/critique my Dynaco A410 mods..
  215. Hammond 1650n and Dynaco mark III circuit.
  216. A quick safety question
  217. George RE: 26E6WG
  218. Advice for a beginner please..
  219. Balancing the PP cathode bias
  220. Hybrid Circlotron Amplifier with only 3 components on the signal path
  221. PARTRIGE transformer
  222. Western Electric 205D Tube for Preamp?
  223. Does anyone have the PDF for the Plitron 4142 ?
  224. 16sj8
  225. Mumbo-Jumbo and power supply caps
  226. Restoring Baldwin 40 watt amps
  227. LTspice U/L Transformer Symbol
  228. advice please, a setup to characterise opts
  229. 809's in Class B P-P w/feedback
  230. 5-pin plug needed
  231. Shorting Plugs
  232. Simple Audio Generator
  233. SE Amps with Variable Impedance Loads
  234. Linearity
  235. PSU Transformers for 6922 SRPP tube preamp
  236. 6JN8 curves?
  237. 6C6-2A3 Amplifier: Changes for 45?
  238. Which rectifier tubes are still manufactured?
  239. transconductance effect on peak power?
  240. Good Power Resistores ???
  241. Super cheap triode amplifier
  242. OTL designed by Glen Orr AudioXpress
  243. Heater voltages
  244. wire thickness
  245. JC Morrison circuits
  246. Building Valve Amplifier from schematic
  247. CliffUSA VS Cliff UK
  248. WHERE ARE;AND HOW ARE THE HARMONICS GENERATED?
  249. resistors for LT317 heater circuit
  250. Function of R2

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