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  1. SOHA v2 cost
  2. Yarland FV34C-111 Valve substitution
  3. My Latest DIY Draft (Beta) Build - Resurrected Sansui AU-111
  4. XiangSheng D-2020-KT88
  5. Edcor vs Electra-Print
  6. adding headphone jack to dynaco pas 3 clone
  7. Revising an old tube preamp section: where to get the knowledge?
  8. 3 Caps parallel to series vs ??? Sonic Performance?
  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. Tubelab Single Ended Amps
  42. I suppose I am a little dense
  43. 12AU7 SE practise amp project
  44. LED bias with gNFB
  45. Schematic question - what this cap is for ?
  46. Hi fi stereo tube amp through guitar speakers??
  47. Output transformer
  48. 50C5s in PP ?
  49. input resistor on the JE LAB 300B
  50. Sockets for UY 41
  51. Any good tube amp kits for a first attempt?
  52. power supply suggestions and advice
  53. favourite midrange,treble tubes
  54. How can I turn 120VAC to 100VAC for Tango MS-UVD in an 845 SE amp?
  55. suspect a bad tube-any simple checks?
  56. Long-Tailed Pair, pse. share your views...
  57. 12AT7 vs 6SL7 as splitter for 6V6 ppp amp
  58. Ultralinear but no UL taps.
  59. OPT Question
  60. An Important Dumb Question-Newbie Stuff
  61. Switched to LED bias on 6SN7 cathode - how do I calculate current?
  62. Autobias OTL....Any thoughts?
  63. Valve Line Amp suggestions
  64. another 6c33 se
  65. no sound on the PHONO channel....
  66. What do you think of this cheap tube amplifier?
  67. What guitar amp should I build from these?
  68. EL34 Hickok 439B setup
  69. Hickok 605
  70. Help! Want to Diy Tube Amp!
  71. Anyone care for some troubleshooting? Hum issue
  72. Re-tubing stock ST70
  73. your opinion of this bias problem
  74. paraphase with follower
  75. Noisy transformer
  76. 6BN11 in triode mode...any experience ?
  77. morgan jones:output stages
  78. Dynaco SCA-35 - fan Cooling?
  79. Partridge Vs Edcor
  80. Feedback with a choke ?
  81. Do you have a tube tester?
  82. Level matching?
  83. cascoded bjt ccs - design check please
  84. Hammond Organ amp to guitar amp
  85. Square wave testing......a guitar amp
  86. help on amp gain structure
  87. iPod/BlackBerry/MP3 input
  88. Shuguang 805 - Advice
  89. Mains Transformer Hums under load
  90. Film Caps in Tube Amps
  91. K12G left channel dead: HELP!
  92. Model 16LS Stereo Integrated Tube Amplifier
  93. Help identifying components
  94. Odd Block Series 1 6L6 Amp Power Supply
  95. Mesa/Boogie Bass 400+ mod question
  96. Need Help for Improving HEATHKIT AA 151
  97. Troubleshooting help for a neophyte
  98. can cap - rectifier spacing
  99. tube dampers anyone
  100. cnc aluminium chassis for tube amps
  101. Balanced Input as Phase Inverter?
  102. 300B SET amp input sensitivity, Help.
  103. Any thoughts on this circuit?
  104. Will This Work? 26 Linestage
  105. Eico HF-89a question
  106. 100TH Ep-Ip Curve
  107. Power Transformer - Can you use separate tap for screens?
  108. Power supply for PP1C - sanity check
  109. Blue Velvet preamp
  110. Paid 5$ for this deluxe/vibrolux schematic! some connections missing help!!
  111. Universal Power Transformer
  112. Tone control in a TubelabSE?
  113. 300B Sweet Spot
  114. Does 81ma sound about right?
  115. Frank's EC8010/6C45P-GM70 SE Interstage.
  116. I need a bit of help to fine tune my PP EL84 amp
  117. IS there any OTL pre amps out there?
  118. Rubycon oil caps
  119. 6BQ5 Sweet Spot?-Charts for other than 250 Screen Volts?
  120. Project Planning (Steps/Order)
  121. Question about coding on tube
  122. 6H13C OTL using 12 parallel tubes
  123. SE 2 watt clean amp?
  124. Transformers for tweeter amps on ferrite donuts
  125. Noob Help: Converting Thomas organ / Wiring
  126. Vintage power transformers
  127. 1625 pp amp layout - comments invited
  128. Grundig 3028 HELP
  129. Oscillation in hybrid amp, how to solve?
  130. Hipass filter to control master bias? - Why attempt to reproduce DC in a tube amp?
  131. Audio Note M-Zero remote control problem
  132. SE TESLA E34L
  133. Need help to restore Sansui 500A
  134. Push-Push OTL?
  135. Stereo Circlotron using only two supplies...
  136. Mercury 1000/2000 KT-88 and 6l6 design bug
  137. Has some tried to use E/PL81 in PPP setup
  138. Heatsinks for tubes?
  139. Mechanical Isolation for a Power Transformer
  140. My First Tube Amp Build: S5 K12G
  141. Size does matter!
  142. tubelabSE with 300b
  143. EL509 (JJ) or PL519?
  144. Clone of JTM45
  145. how can i build a Choke?
  146. A new design
  147. My first and last DIY tube amp !
  148. anyone help convert dual volume to single?
  149. 480-0-480vac To Power A SE GM70!??
  150. Triode plate resistance == internal negative feedback?
  151. Quiz: which tube is this?
  152. 6EM7 Headphone Spud - Please comment
  153. replacement tubes
  154. Mengyue Mini EL34B stereo balance issues..
  155. Email Address for Heiner Jakobi ?
  156. A quick tube matching question
  157. 30W triode?
  158. My Project: Pilot 602
  159. Fake glow LED under valve in commercial devices
  160. Unknown PP output transformers
  161. Switching Amp? 25watts WITH OUT tubes or Transistors?!?
  162. Power Supply B+ voltage?
  163. Newby here first post.
  164. Cheap and easy tube amp.
  165. Rate/critique my Dynaco A410 mods..
  166. Hammond 1650n and Dynaco mark III circuit.
  167. A quick safety question
  168. George RE: 26E6WG
  169. Advice for a beginner please..
  170. Balancing the PP cathode bias
  171. Hybrid Circlotron Amplifier with only 3 components on the signal path
  172. PARTRIGE transformer
  173. Western Electric 205D Tube for Preamp?
  174. Does anyone have the PDF for the Plitron 4142 ?
  175. 16sj8
  176. Mumbo-Jumbo and power supply caps
  177. Restoring Baldwin 40 watt amps
  178. LTspice U/L Transformer Symbol
  179. advice please, a setup to characterise opts
  180. 809's in Class B P-P w/feedback
  181. 5-pin plug needed
  182. Shorting Plugs
  183. Simple Audio Generator
  184. SE Amps with Variable Impedance Loads
  185. Linearity
  186. PSU Transformers for 6922 SRPP tube preamp
  187. 6JN8 curves?
  188. 6C6-2A3 Amplifier: Changes for 45?
  189. Which rectifier tubes are still manufactured?
  190. transconductance effect on peak power?
  191. Good Power Resistores ???
  192. Super cheap triode amplifier
  193. OTL designed by Glen Orr AudioXpress
  194. Heater voltages
  195. wire thickness
  196. JC Morrison circuits
  197. Building Valve Amplifier from schematic
  198. CliffUSA VS Cliff UK
  199. WHERE ARE;AND HOW ARE THE HARMONICS GENERATED?
  200. resistors for LT317 heater circuit
  201. Function of R2
  202. balanced input for any amplifier
  203. Spect output peak to peak for 807 SE ul
  204. HK Citation II Output Transformer Data ???
  205. Looking to purchase non-working output transformers
  206. metals!
  207. Another 2A3 build
  208. where r crossline master volumes from?
  209. Output Audio Transformer Impedance
  210. The echo effect of a headphone AMP
  211. flexy -a multirole driver/preamp-
  212. Scott 233 Bias procedure question
  213. What to do with 6DQ6B's?
  214. Goodcomponent - another chinese supplier
  215. Do EL34s in pentode mode PP AB1 sound better with lower screen voltage?
  216. Bogen MX60A as pre-amp
  217. kiwi.baby-huey. And so it begins...
  218. "sustain bias" and other organ amp ?s
  219. max current draw according to loadlines and reality
  220. Where to buy EI transformer bobbins?
  221. DHT filament circuit layouts ?
  222. After PP projects new SE project
  223. Gyrator Frequency Response?
  224. converting a dynaco mark IV driver board for headphone amp use
  225. Dared mp30
  226. PP pentode tube headphone amp PCB needed ( 6au6 thru el84)
  227. low wattage valve amps
  228. 6LU8 in Moscode 600
  229. The Octal Preamplifier with Phono section
  230. Which tube does my amp use? 12AU7 12BH7 12AX7 6CG7 others?
  231. Wacky Hum and Harmonics
  232. Constructions of ShuGang's 211 and 805A
  233. Tube ID help needed (EL34?)
  234. 5881, 6V6, EL84, or 7591 for triode-strapped operation?
  235. Strange Grounding Problem - My best guess: ghosts.
  236. High voltages
  237. PAC Perfectionist Audio Component preamp
  238. plate stoppers or cathode stoppers?
  239. Need Spud Amp schematic
  240. 5654 (6ak5) line stage in triode mode
  241. PSU capacitors
  242. Shuguang Treasure 300B-Z
  243. Rogers Cadet III input impedance
  244. Aikido w/ tone controls
  245. UTC Z-2961 input transformer
  246. Please help me improve my headphone amp
  247. Faint Hiss/Hum.
  248. What tubes with 3.3K p2p output?
  249. Strip board project completed.
  250. 6V6 SE VS ECL85

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