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  1. another 12ax7 preamp
  2. SOHA v2 cost
  3. Yarland FV34C-111 Valve substitution
  4. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  5. XiangSheng D-2020-KT88
  6. Edcor vs Electra-Print
  7. adding headphone jack to dynaco pas 3 clone
  8. Revising an old tube preamp section: where to get the knowledge?
  9. 6CG7 Bias Current?
  10. Output Pentode Screen at half Plate voltage
  11. PP to parallel
  12. Edcor vs Electra-Print
  13. Show off your P2P wiring.
  14. adapting 2 SE boards for a PP driver stage
  15. Freed transformer info needed
  16. Recomended connectors?
  17. COSMOS amp, Japan
  18. Advantage to constant current draw from power supply?
  19. SP9 schematic questions...
  20. Would you rebuild this?
  21. possible advantage to global???
  22. Correct Path: Diodes Or Rectifier Tube?
  23. 6BQ5 Bias Point Help
  24. Old Hammond 1640SE OPT
  25. Copland CVA 306 Can work only with 2 tubes ??
  26. Cleaning Edison Price posts
  27. need help on treble distortion with my EAR834p phono
  28. SE 6CB5A amp with 6N7 driver
  29. McAlister PP150
  30. Standard Input Design Value
  31. Breadboard help
  32. Odd amp built with PL81 / PL36
  33. Has anyone built a 47 SE amp?
  34. Which EL84
  35. First attempt p2p valve power amp
  36. Fundamental Pentode Question
  37. EL34 Triode Mode Resistors
  38. 807 SE Schematic Critiques
  39. Amp for Magneplanar 1.6
  40. After Christmas free time
  41. I suppose I am a little dense
  42. 12AU7 SE practise amp project
  43. LED bias with gNFB
  44. Schematic question - what this cap is for ?
  45. Output transformer
  46. 50C5s in PP ?
  47. input resistor on the JE LAB 300B
  48. Sockets for UY 41
  49. Any good tube amp kits for a first attempt?
  50. power supply suggestions and advice
  51. favourite midrange,treble tubes
  52. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  53. suspect a bad tube-any simple checks?
  54. Long-Tailed Pair, pse. share your views...
  55. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  56. Ultralinear but no UL taps.
  57. OPT Question
  58. An Important Dumb Question-Newbie Stuff
  59. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  60. Autobias OTL....Any thoughts?
  61. Valve Line Amp suggestions
  62. another 6c33 se
  63. no sound on the PHONO channel....
  64. What do you think of this cheap tube amplifier?
  65. Help! Want to Diy Tube Amp!
  66. Anyone care for some troubleshooting? Hum issue
  67. Re-tubing stock ST70
  68. your opinion of this bias problem
  69. paraphase with follower
  70. Noisy transformer
  71. 6BN11 in triode mode...any experience ?
  72. morgan jones:output stages
  73. Dynaco SCA-35 - fan Cooling?
  74. Partridge Vs Edcor
  75. Feedback with a choke ?
  76. Level matching?
  77. cascoded bjt ccs - design check please
  78. help on amp gain structure
  79. iPod/BlackBerry/MP3 input
  80. Shuguang 805 - Advice
  81. Mains Transformer Hums under load
  82. K12G left channel dead: HELP!
  83. Model 16LS Stereo Integrated Tube Amplifier
  84. Help identifying components
  85. Odd Block Series 1 6L6 Amp Power Supply
  86. Need Help for Improving HEATHKIT AA 151
  87. Troubleshooting help for a neophyte
  88. can cap - rectifier spacing
  89. tube dampers anyone
  90. cnc aluminium chassis for tube amps
  91. Balanced Input as Phase Inverter?
  92. 300B SET amp input sensitivity, Help.
  93. Any thoughts on this circuit?
  94. Will This Work? 26 Linestage
  95. Eico HF-89a question
  96. 100TH Ep-Ip Curve
  97. Power Transformer - Can you use separate tap for screens?
  98. Power supply for PP1C - sanity check
  99. Blue Velvet preamp
  100. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  101. Universal Power Transformer
  102. Tone control in a TubelabSE?
  103. 300B Sweet Spot
  104. Does 81ma sound about right?
  105. Frank's EC8010/6C45P-GM70 SE Interstage.
  106. I need a bit of help to fine tune my PP EL84 amp
  107. IS there any OTL pre amps out there?
  108. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  109. Project Planning (Steps/Order)
  110. Question about coding on tube
  111. 6H13C OTL using 12 parallel tubes
  112. SE 2 watt clean amp?
  113. Transformers for tweeter amps on ferrite donuts
  114. Noob Help: Converting Thomas organ / Wiring
  115. Vintage power transformers
  116. 1625 pp amp layout - comments invited
  117. Grundig 3028 HELP
  118. Oscillation in hybrid amp, how to solve?
  119. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  120. Audio Note M-Zero remote control problem
  121. SE TESLA E34L
  122. Need help to restore Sansui 500A
  123. Push-Push OTL?
  124. Stereo Circlotron using only two supplies...
  125. Mercury 1000/2000 KT-88 and 6l6 design bug
  126. Has some tried to use E/PL81 in PPP setup
  127. Heatsinks for tubes?
  128. Mechanical Isolation for a Power Transformer
  129. My First Tube Amp Build: S5 K12G
  130. Size does matter!
  131. tubelabSE with 300b
  132. EL509 (JJ) or PL519?
  133. how can i build a Choke?
  134. A new design
  135. My first and last DIY tube amp !
  136. anyone help convert dual volume to single?
  137. 480-0-480vac To Power A SE GM70!??
  138. Triode plate resistance == internal negative feedback?
  139. Quiz: which tube is this?
  140. 6EM7 Headphone Spud - Please comment
  141. replacement tubes
  142. Mengyue Mini EL34B stereo balance issues..
  143. Email Address for Heiner Jakobi ?
  144. A quick tube matching question
  145. 30W triode?
  146. My Project: Pilot 602
  147. Fake glow LED under valve in commercial devices
  148. Unknown PP output transformers
  149. Newby here first post.
  150. Cheap and easy tube amp.
  151. Rate/critique my Dynaco A410 mods..
  152. Hammond 1650n and Dynaco mark III circuit.
  153. A quick safety question
  154. George RE: 26E6WG
  155. Advice for a beginner please..
  156. Balancing the PP cathode bias
  157. Hybrid Circlotron Amplifier with only 3 components on the signal path
  158. PARTRIGE transformer
  159. Western Electric 205D Tube for Preamp?
  160. Does anyone have the PDF for the Plitron 4142 ?
  161. 16sj8
  162. Restoring Baldwin 40 watt amps
  163. LTspice U/L Transformer Symbol
  164. advice please, a setup to characterise opts
  165. 809's in Class B P-P w/feedback
  166. Simple Audio Generator
  167. SE Amps with Variable Impedance Loads
  168. Linearity
  169. 6JN8 curves?
  170. 6C6-2A3 Amplifier: Changes for 45?
  171. Which rectifier tubes are still manufactured?
  172. transconductance effect on peak power?
  173. Super cheap triode amplifier
  174. OTL designed by Glen Orr AudioXpress
  175. Heater voltages
  176. JC Morrison circuits
  177. Building Valve Amplifier from schematic
  178. CliffUSA VS Cliff UK
  179. Where are and how harmonics generated?
  180. Function of R2
  181. balanced input for any amplifier
  182. Spect output peak to peak for 807 SE ul
  183. HK Citation II Output Transformer Data ???
  184. Looking to purchase non-working output transformers
  185. Another 2A3 build
  186. where r crossline master volumes from?
  187. Output Audio Transformer Impedance
  188. The echo effect of a headphone AMP
  189. flexy -a multirole driver/preamp-
  190. Scott 233 Bias procedure question
  191. What to do with 6DQ6B's?
  192. Goodcomponent - another chinese supplier
  193. Do EL34s in pentode mode PP AB1 sound better with lower screen voltage?
  194. Bogen MX60A as pre-amp
  195. kiwi.baby-huey. And so it begins...
  196. max current draw according to loadlines and reality
  197. DHT filament circuit layouts ?
  198. After PP projects new SE project
  199. Gyrator Frequency Response?
  200. converting a dynaco mark IV driver board for headphone amp use
  201. Dared mp30
  202. PP pentode tube headphone amp PCB needed ( 6au6 thru el84)
  203. low wattage valve amps
  204. 6LU8 in Moscode 600
  205. The Octal Preamplifier with Phono section
  206. Which tube does my amp use? 12AU7 12BH7 12AX7 6CG7 others?
  207. Wacky Hum and Harmonics
  208. Constructions of ShuGang's 211 and 805A
  209. Tube ID help needed (EL34?)
  210. 5881, 6V6, EL84, or 7591 for triode-strapped operation?
  211. Strange Grounding Problem - My best guess: ghosts.
  212. High voltages
  213. PAC Perfectionist Audio Component preamp
  214. plate stoppers or cathode stoppers?
  215. Need Spud Amp schematic
  216. 5654 (6ak5) line stage in triode mode
  217. PSU capacitors
  218. Shuguang Treasure 300B-Z
  219. Rogers Cadet III input impedance
  220. Aikido w/ tone controls
  221. UTC Z-2961 input transformer
  222. Please help me improve my headphone amp
  223. Faint Hiss/Hum.
  224. What tubes with 3.3K p2p output?
  225. Strip board project completed.
  226. 6V6 SE VS ECL85
  227. 6v6 PP biasing question
  228. Phone Preamp PSU
  229. How much would a cathode follower drift ?
  230. Strange hum in a Williamson amp
  231. Tube preamp for a TDA2040 chipamp
  232. Heater problem
  233. A couple newbie questions
  234. 100KW Power Amplifier
  235. Excellent NOS Russian 6Pi3C/6N3C (6L6GC) Tubes...
  236. Flea-power class-A2 using a power opamp driver
  237. plate to plate feedback - measurements
  238. DC heat float with 50V bias tap from mains transformer?
  239. repair shop
  240. What to build next?
  241. Fisher X-100-C Output Transformer needed
  242. Schade Feedback
  243. RH807 push pull ?
  244. RIAA lite no.ls37
  245. help I need some addres tube store in amsterdam
  246. 50C5 pentode LTSpice model
  247. "Iron Garter" Push-Pull Amplifier
  248. Mcintosh Mc-3500 sound
  249. parafeed - Gyrator vs CCS anode load
  250. Compactron amp... LIVES!

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