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  1. possible advantage to global???
  2. Correct Path: Diodes Or Rectifier Tube?
  3. 6BQ5 Bias Point Help
  4. Old Hammond 1640SE OPT
  5. Copland CVA 306 Can work only with 2 tubes ??
  6. Cleaning Edison Price posts
  7. need help on treble distortion with my EAR834p phono
  8. SE 6CB5A amp with 6N7 driver
  9. McAlister PP150
  10. Standard Input Design Value
  11. Breadboard help
  12. Odd amp built with PL81 / PL36
  13. Has anyone built a 47 SE amp?
  14. Which EL84
  15. First attempt p2p valve power amp
  16. Fundamental Pentode Question
  17. EL34 Triode Mode Resistors
  18. 807 SE Schematic Critiques
  19. Amp for Magneplanar 1.6
  20. After Christmas free time
  21. Tubelab Single Ended Amps
  22. I suppose I am a little dense
  23. 12AU7 SE practise amp project
  24. LED bias with gNFB
  25. Schematic question - what this cap is for ?
  26. Hi fi stereo tube amp through guitar speakers??
  27. Output transformer
  28. 50C5s in PP ?
  29. input resistor on the JE LAB 300B
  30. Sockets for UY 41
  31. Any good tube amp kits for a first attempt?
  32. power supply suggestions and advice
  33. favourite midrange,treble tubes
  34. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  35. suspect a bad tube-any simple checks?
  36. Long-Tailed Pair, pse. share your views...
  37. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  38. Ultralinear but no UL taps.
  39. OPT Question
  40. An Important Dumb Question-Newbie Stuff
  41. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  42. Autobias OTL....Any thoughts?
  43. Valve Line Amp suggestions
  44. another 6c33 se
  45. no sound on the PHONO channel....
  46. What do you think of this cheap tube amplifier?
  47. What guitar amp should I build from these?
  48. EL34 Hickok 439B setup
  49. Hickok 605
  50. Help! Want to Diy Tube Amp!
  51. Anyone care for some troubleshooting? Hum issue
  52. Re-tubing stock ST70
  53. your opinion of this bias problem
  54. paraphase with follower
  55. Noisy transformer
  56. 6BN11 in triode mode...any experience ?
  57. morgan jones:output stages
  58. Dynaco SCA-35 - fan Cooling?
  59. Partridge Vs Edcor
  60. Feedback with a choke ?
  61. Do you have a tube tester?
  62. Level matching?
  63. cascoded bjt ccs - design check please
  64. Hammond Organ amp to guitar amp
  65. Square wave testing......a guitar amp
  66. help on amp gain structure
  67. iPod/BlackBerry/MP3 input
  68. Shuguang 805 - Advice
  69. Mains Transformer Hums under load
  70. Film Caps in Tube Amps
  71. K12G left channel dead: HELP!
  72. Model 16LS Stereo Integrated Tube Amplifier
  73. Help identifying components
  74. Odd Block Series 1 6L6 Amp Power Supply
  75. Mesa/Boogie Bass 400+ mod question
  76. Need Help for Improving HEATHKIT AA 151
  77. Troubleshooting help for a neophyte
  78. can cap - rectifier spacing
  79. tube dampers anyone
  80. cnc aluminium chassis for tube amps
  81. Balanced Input as Phase Inverter?
  82. 300B SET amp input sensitivity, Help.
  83. Any thoughts on this circuit?
  84. Will This Work? 26 Linestage
  85. Eico HF-89a question
  86. 100TH Ep-Ip Curve
  87. Power Transformer - Can you use separate tap for screens?
  88. Power supply for PP1C - sanity check
  89. Blue Velvet preamp
  90. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  91. Universal Power Transformer
  92. Tone control in a TubelabSE?
  93. 300B Sweet Spot
  94. Does 81ma sound about right?
  95. Frank's EC8010/6C45P-GM70 SE Interstage.
  96. I need a bit of help to fine tune my PP EL84 amp
  97. IS there any OTL pre amps out there?
  98. Rubycon oil caps
  99. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  100. Project Planning (Steps/Order)
  101. Question about coding on tube
  102. 6H13C OTL using 12 parallel tubes
  103. SE 2 watt clean amp?
  104. Transformers for tweeter amps on ferrite donuts
  105. Noob Help: Converting Thomas organ / Wiring
  106. Vintage power transformers
  107. 1625 pp amp layout - comments invited
  108. Grundig 3028 HELP
  109. Oscillation in hybrid amp, how to solve?
  110. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  111. Audio Note M-Zero remote control problem
  112. SE TESLA E34L
  113. Need help to restore Sansui 500A
  114. Push-Push OTL?
  115. Stereo Circlotron using only two supplies...
  116. Mercury 1000/2000 KT-88 and 6l6 design bug
  117. Has some tried to use E/PL81 in PPP setup
  118. Heatsinks for tubes?
  119. Mechanical Isolation for a Power Transformer
  120. My First Tube Amp Build: S5 K12G
  121. Size does matter!
  122. tubelabSE with 300b
  123. EL509 (JJ) or PL519?
  124. Clone of JTM45
  125. how can i build a Choke?
  126. A new design
  127. My first and last DIY tube amp !
  128. anyone help convert dual volume to single?
  129. 480-0-480vac To Power A SE GM70!??
  130. Triode plate resistance == internal negative feedback?
  131. Quiz: which tube is this?
  132. 6EM7 Headphone Spud - Please comment
  133. replacement tubes
  134. Mengyue Mini EL34B stereo balance issues..
  135. Email Address for Heiner Jakobi ?
  136. A quick tube matching question
  137. 30W triode?
  138. My Project: Pilot 602
  139. Fake glow LED under valve in commercial devices
  140. Unknown PP output transformers
  141. Switching Amp? 25watts WITH OUT tubes or Transistors?!?
  142. Power Supply B+ voltage?
  143. Newby here first post.
  144. Cheap and easy tube amp.
  145. Rate/critique my Dynaco A410 mods..
  146. Hammond 1650n and Dynaco mark III circuit.
  147. A quick safety question
  148. George RE: 26E6WG
  149. Advice for a beginner please..
  150. Balancing the PP cathode bias
  151. Hybrid Circlotron Amplifier with only 3 components on the signal path
  152. PARTRIGE transformer
  153. Western Electric 205D Tube for Preamp?
  154. Does anyone have the PDF for the Plitron 4142 ?
  155. 16sj8
  156. Mumbo-Jumbo and power supply caps
  157. Restoring Baldwin 40 watt amps
  158. LTspice U/L Transformer Symbol
  159. advice please, a setup to characterise opts
  160. 809's in Class B P-P w/feedback
  161. 5-pin plug needed
  162. Shorting Plugs
  163. Simple Audio Generator
  164. SE Amps with Variable Impedance Loads
  165. Linearity
  166. PSU Transformers for 6922 SRPP tube preamp
  167. 6JN8 curves?
  168. 6C6-2A3 Amplifier: Changes for 45?
  169. Which rectifier tubes are still manufactured?
  170. transconductance effect on peak power?
  171. Good Power Resistores ???
  172. Super cheap triode amplifier
  173. OTL designed by Glen Orr AudioXpress
  174. Heater voltages
  175. wire thickness
  176. JC Morrison circuits
  177. Building Valve Amplifier from schematic
  178. CliffUSA VS Cliff UK
  179. WHERE ARE;AND HOW ARE THE HARMONICS GENERATED?
  180. resistors for LT317 heater circuit
  181. Function of R2
  182. balanced input for any amplifier
  183. Spect output peak to peak for 807 SE ul
  184. HK Citation II Output Transformer Data ???
  185. Looking to purchase non-working output transformers
  186. metals!
  187. Another 2A3 build
  188. where r crossline master volumes from?
  189. Output Audio Transformer Impedance
  190. The echo effect of a headphone AMP
  191. flexy -a multirole driver/preamp-
  192. Scott 233 Bias procedure question
  193. What to do with 6DQ6B's?
  194. Goodcomponent - another chinese supplier
  195. Do EL34s in pentode mode PP AB1 sound better with lower screen voltage?
  196. Bogen MX60A as pre-amp
  197. kiwi.baby-huey. And so it begins...
  198. "sustain bias" and other organ amp ?s
  199. max current draw according to loadlines and reality
  200. Where to buy EI transformer bobbins?
  201. DHT filament circuit layouts ?
  202. After PP projects new SE project
  203. Gyrator Frequency Response?
  204. converting a dynaco mark IV driver board for headphone amp use
  205. Dared mp30
  206. PP pentode tube headphone amp PCB needed ( 6au6 thru el84)
  207. low wattage valve amps
  208. 6LU8 in Moscode 600
  209. The Octal Preamplifier with Phono section
  210. Which tube does my amp use? 12AU7 12BH7 12AX7 6CG7 others?
  211. Wacky Hum and Harmonics
  212. Constructions of ShuGang's 211 and 805A
  213. Tube ID help needed (EL34?)
  214. 5881, 6V6, EL84, or 7591 for triode-strapped operation?
  215. Strange Grounding Problem - My best guess: ghosts.
  216. High voltages
  217. PAC Perfectionist Audio Component preamp
  218. plate stoppers or cathode stoppers?
  219. Need Spud Amp schematic
  220. 5654 (6ak5) line stage in triode mode
  221. PSU capacitors
  222. Shuguang Treasure 300B-Z
  223. Rogers Cadet III input impedance
  224. Aikido w/ tone controls
  225. UTC Z-2961 input transformer
  226. Please help me improve my headphone amp
  227. Faint Hiss/Hum.
  228. What tubes with 3.3K p2p output?
  229. Strip board project completed.
  230. 6V6 SE VS ECL85
  231. 6v6 PP biasing question
  232. Phone Preamp PSU
  233. How much would a cathode follower drift ?
  234. Strange hum in a Williamson amp
  235. Tube preamp for a TDA2040 chipamp
  236. Heater problem
  237. A couple newbie questions
  238. 100KW Power Amplifier
  239. Excellent NOS Russian 6Pi3C/6N3C (6L6GC) Tubes...
  240. Flea-power class-A2 using a power opamp driver
  241. plate to plate feedback - measurements
  242. DC heat float with 50V bias tap from mains transformer?
  243. repair shop
  244. What to build next?
  245. Fisher X-100-C Output Transformer needed
  246. Schade Feedback
  247. RH807 push pull ?
  248. RIAA lite no.ls37
  249. help I need some addres tube store in amsterdam
  250. Valve curve tracer gm tester

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