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  1. leak tl12+
  2. Triode for 60V
  3. Tube Sound Processor
  4. McIntosh MC-275 buy or build an auto-bias tube amp?
  5. slp-90 clone, decent preamp!
  6. Triode St70 with hum
  7. SSR switching HT transformer?
  8. Tube Flash Drive
  9. 6S31B-P Grid current
  10. Tube Op Amp Building Blocks
  11. knight kb-85 restoration/mod
  12. Acceptable Power Supply Noise Limits?
  13. Loadlines and Microsoft Paint
  14. aikido noval all in one caps upgrade
  15. Specific grid stopper question
  16. GU50 Screen Driven, DC Coupled
  17. April fool?
  18. Providing both balanced and unbalanced inputs
  19. Best triode section inside ecc81 tube?
  20. opt for 45 tube
  21. Designing an Interstage Transformer
  22. Tube Amplifier Builder's Competition
  23. testing tubes for shorts
  24. Tube kits
  25. GU29 PP Amplifier
  26. 1625 tube radio?
  27. Measuring volts on an unloaded PSU secondary
  28. Suggest a preamp project for me.
  29. Audio Magazine
  30. Jadis DA88S schematic
  31. clone jadis jp200 preamp
  32. GROMMES LJ5
  33. Altec 1570B Feedback
  34. rebuilding 3tube zenith amp
  35. Effect of lower G2, EL84 PP
  36. Phono connection for pioneer sx34b
  37. Low output from two 6L6's for no apparent reason?
  38. Preamp design ok?
  39. GZ34 base?
  40. Tube Technology Genesis 100w monoblock manual?
  41. 6SN7 & 6V6 Push Pull - increase gain
  42. screen grid resistor value
  43. KT88 design questions
  44. el84/12ax7 se schematic needed!
  45. Broken AMC CVT 2100
  46. 98dB speaker - El Cheapo
  47. consolidated raw tube data
  48. Loadlines for Parallel SE outputs
  49. What is the correct load for an 845 triode?
  50. Rauland W-835A amplifier, choke field coil output?
  51. First use for Trancendent Sound Tube Analyzer
  52. Schematics/vintage
  53. APPJ PA0901A / Miniwatt N3 schematics
  54. APPJ PA0901A() schematics
  55. Help Needed: Lower Gain on a Tube Amp?
  56. Help: Hickok Western Electric KS-15750 Calibration
  57. Mullard ecc82 12au7 code help
  58. Wondering if I can use this XFMR to power two NYD 6SN7 1 bottle pres
  59. ST-70 Power Transformer
  60. Help Identifying a Tube - Westinghouse 12AX7A
  61. An incredible collection!
  62. Using only half of a stereo PP amp
  63. Low voltage vs. High Voltage Preamp.
  64. 6J6 Headphone hybrid amplifer?
  65. Hybrid headphone amp.....
  66. Please help with hum problem..
  67. Dead Audio Innovations Series 500
  68. Problems with E88CC / 6922 drawing grid current on power-up
  69. H.J.Leak TL12 "point one"
  70. Tubecad hybrird feedforward feedback shunt regulator
  71. 6v6 SE kit - any good?
  72. DBX 576 complete upgrade. Advices?
  73. help !! 45 tube
  74. 6P45S PP, simulation frustration.
  75. AMC CVT 3030 one more try - or dumpster
  76. Help for 211 HV PSU with damper diodes
  77. Flexible supply idea
  78. Equalizer on EL84 project
  79. parallel single-ended 12W6
  80. help improving/refurb a Fisher k-10 Tube spring reverb
  81. S.E.X. amp + Impedance switch build problems.
  82. problem with speaker
  83. EC80 as preamp tube.
  84. 6CJ3 Rectifier Connection Question ?
  85. AC Filament Voltage Question ?
  86. My new GU50 SE (all pentode)
  87. Ming Da MC-3R Schematics
  88. 12B4 PSE build thread
  89. Looking for options for 4 volt heater
  90. Help me,Art Audio Concerto
  91. heathkit t3 12sh7 tube
  92. PSU dimensioning for pre-amp
  93. Williamson preamp identification help wanted
  94. Adequate switch for UL-triode-pentode
  95. pl500 based integrated OTL amplifier
  96. Capacitor dielectric - high impedance headphones
  97. REQUEST FOR OPINIONS
  98. Mysterious LCR phono preamp
  99. Eimac 100TL Output Transformers and Bias Point ?
  100. Tube deterioration
  101. Heathkit XO-1 power cords
  102. EF86 Push-Pull "power"-amp
  103. Transformers!?
  104. Weird ground loop problem
  105. Re-caping Cayin A70-T
  106. A3 attenuator help for an Aikido line amp
  107. Driver Tube Power Supply Question ?
  108. Line Stage vs. Phase Inverter - 12A*7
  109. Intermittent Buzz Decware Zen SE84Bged
  110. Tamura F2011/el34 x 4
  111. E88CC/6922 battery supply
  112. Aikido 9-pin all-in-1 headphone amp problem
  113. Filament Transformer Question ?
  114. Load Resistance, etc., chart for Class A push pull 6L6s?
  115. Question about preamp, boost and line-stage
  116. help please
  117. Practical phase inverter article
  118. Tube vs. Jfet Preamp for Dynaco ST-35 tube power amp
  119. Rio W-41 no sound
  120. Help: TDA1541A DAC Output To Tube Gainstage
  121. Pieter's take on an all DHT headphone amplifier.
  122. toroidal chokes
  123. Truly Silly Transformer Question
  124. Elementary resistance question
  125. Russian 310A + 300B
  126. 1959 RCA tube amplifier needs help
  127. What's going on?
  128. Aikido 9-pin All-in-one Testing question
  129. Gyrator in Tail of LTP
  130. tubemaster EL84
  131. Silly transformer question
  132. Marant 8b bias meter
  133. Opera Consonance resitor question ?
  134. ADI's Double Dyna
  135. DuMont Stereo Tube Console late 50's - What to do?
  136. No Sound from Magnavox EL 1484-1 amp/phono
  137. Elevated Heater Question
  138. 6P45S/EL509 input capacitance in triode mode
  139. 6E6p-e Little Tiny Wire
  140. another aikido ?
  141. NOS 6P3S-e or cheap new 5881? Identify this tube..
  142. Contan Audio from Melbourne Aus, any info?
  143. Loctal Base Post
  144. Timber amp with solid copper plate as earth and ground plane
  145. Dynaco ST70 - Which tubes do you like?
  146. 6SL7 in parallel driving 6550
  147. Will this work as a heater for 300b?
  148. Tube grid resistance for 6P45S, fine?
  149. Akido help pls
  150. BEARD P101 information
  151. Got some 6n3c-e (6p3s-e)with blank bulb?
  152. Graaf GM-20
  153. medium power OTL circlotron amplifier
  154. Help me identity this amp
  155. Hajdinjak preamp + 2x mono tube amp -What to do?
  156. Moscode 600 Noisy Fan
  157. component reduction in signal chain
  158. Aikido with Stax
  159. Help need on Xindak XA3200MII hybrid pre-amplifier
  160. ideas for tube burn in / bias match station
  161. KT120 triode operation single stage amp
  162. Question regarding 7199 Tube wiring
  163. Why do modern PP OPTs have 16 Ohm taps?
  164. 10M45 current source
  165. 12bh7 in place of ecc82
  166. High voltage winding no center tap?
  167. Marantz 8b recap
  168. Pair Quad II in all original condition... restore or sell
  169. Where to find tube designers for hire?
  170. 10M45S problem
  171. 300B Load Line and Bias?
  172. Looking for little help with Glassware Janus shunt reg
  173. Quick question about grounding
  174. Source for 6jg5 or equivalent in Europe
  175. Need your help: Change from el34 to 6550 ends in a desaster
  176. conn el 6026 tube amp schematic for hifi stereo
  177. GE 211 "flash" question
  178. Learned something (the hard way) about mica capacitors
  179. Aikido octal floating output
  180. Screened cable for rewiring valve amp
  181. Fault developed, producing static noise
  182. Tubelab SE buzz and crackle
  183. EL34+Ecc83 amp hum
  184. Gold plated Dynaco ST-70 for $3k
  185. Preamp noise level ?
  186. KOSS A1220 - Vintage Tube Headphone Amp - Diagnose and Mod questions...
  187. Rectifier tube cathode and heater
  188. testing voltage on tube filament, without the tube
  189. New semi-custom metal chassis manufacturer
  190. 55 WPC 1625 Mono Block Amps
  191. Masco C-10 Mic/Phono Amp
  192. New driver stage for dynaco mk3
  193. Power Transformer Issue
  194. Marantz 8B
  195. Safety questions
  196. amplifier output impedance measurement
  197. Regulated Vs Non-regulated linear Power Supply
  198. Single RIAA passive eq design for differential DC coupled tube circuit
  199. Amp to Drive Lowther DX3's in Rear Loaded Horn
  200. Anyone know what's going on with Antek?
  201. Sources of 120hz hum?
  202. make adapter from 6n2p to 12ax7
  203. DC coupling with a choke?
  204. help with hum 12ax7 preamp
  205. Signal->crossover->3 amps->speaker
  206. I want to build an inexpensive EL 84 integrated amp with a phono section.
  207. Scott17 KT88 SE Tube Amp Build Log
  208. heater currents
  209. 300B Orientation so logo faces forward
  210. Leak stereo 20
  211. Suggestion: Output tube in SET amp for midbass frequency
  212. Monster Hammond Output XFMRs
  213. 6A3 / 6B4G Design
  214. DC7 MK3 up and running.
  215. Marrantz Model 9 Transformer Buy
  216. 6N2P/6Н2П low plate current increases noise?
  217. first tube amp
  218. rogers cadet 111 or Quad 11
  219. New FM-3 Motherboard
  220. 12ax7(ecc83) and 6n2p 12ax7...........differents??
  221. Heater supply
  222. Very upgraded ST-70 kit/build w/ 6550 tubes
  223. Marantz 8b Electrolytics
  224. How biasing mA in tubes
  225. PSU id and help (psu designer ii)
  226. The all DHT SET Headphone Amp
  227. Assistance with rectifiers in PSUD
  228. Music Angel XD 500 MkII Bias setting
  229. Magnoval
  230. S.E.X. amp plate chokes replacements
  231. Ampex 600 Questions
  232. Antek out of business until April
  233. SE EL34 in triode schematic
  234. Sylvania Console?
  235. Can output transfomers be pick and mixed?
  236. i have just notice that my yaqin 2100 vk bias settings is all over the place.
  237. Preamp Design Review Request
  238. Red Plate Of Doom
  239. LED cathode bias noise issue
  240. PCL86 se amplif.
  241. Is This a good Amplier?
  242. Question: Class AB Hybrid with small signal triode and Power Mosfet output?
  243. Contemporary Transformer for Doubler
  244. The volume pot - The hidden villain of preamp
  245. Heathkit EUW-15 Univ. Power Supply (Tube)
  246. diamond cathode tubes
  247. 6146B
  248. ef86 based preamp
  249. 12FQ7 Why and will it be shortage?
  250. Trouble w/ Maida regulator bias supply

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