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  1. Wanting copies of Prof. Alexander Bereskin's transformer winding pictures.
  2. what's the brand of this capacitor sounds great ?
  3. Edcor CXSE25-8-3.2K or Transcendar TT-017-OT?
  4. PP 2A3 Fixed Bias
  5. RL12P35 convert to el34
  6. Statistical regulator from VA 4rd edition
  7. Matching Impedances (the Math behind it) Please Advise if you have a grasp. Xfmrs etc
  8. Help 6AQ5 pushpull
  9. HV Logic Control Approach
  10. Valve heater question
  11. Phase inverter adjustment - Fisher 80AZ
  12. Repurposing a Bogen CHB-35A
  13. SMPS
  14. Interstage and bias failure
  15. Grid 2 current for GU19-1
  16. 6x5 tube
  17. IT coupled 6BG6GA
  18. Mystery noise has got me baffled
  19. Dynaco PAS: too much liposuction?
  20. LP Tape Noise
  21. YAKOV ARONOV MA-100
  22. Help for balance-tone control-mode selector bypass
  23. Design of transformers for valve amplifiers
  24. Opinions please: seeking a first class DIY SET amp design
  25. PSU for 6N6P
  26. HOT B+ capacitors!
  27. Analog meter monitoring HT supply
  28. Lamm LL2.1 DC Offset problem
  29. 6L6GT/6SJ7 Valve Amp DIY
  30. BHExchange for BottleHead's
  31. 6BY5GA elevated heater question
  32. Tone controls
  33. EL84 "IP" questions
  34. KIT Single ended KT88
  35. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  36. All tube cap tube amp?
  37. 12AX7 preamp for DAC
  38. Grid resistors -> GND
  39. OTL headphone amp distorting & clipping: weak power supply?
  40. Broken bias resistors (Yaqin MC-10L)
  41. Tube Enclosure suggestion from Europe.
  42. Benefit/SQ of tube stage at the input of ss power amp
  43. Is 6907 and QQV03-20A tubes are same?
  44. Found some chokes
  45. 6SN7 at low plate currents
  46. 12AU7, 12BH7, Darker Less Bright Option
  47. Heater current effects
  48. Not using all the sections on multi-section cap
  49. DC heater supply dies on me
  50. 1972 Leak Varislope 2 Stereo
  51. OPT secondary ground, stacked supplies
  52. OTL for HeaPhone
  53. Voltage doubler and filament supply
  54. Please suggest me a 6V6 class AB amp
  55. Need Review of wiring up of this SRPP 6AS7 tube amp
  56. Hum in a triode 1H6G...help !
  57. 40w Class A PP KT66?
  58. My new small amp EL84 SE Triode
  59. tube preamp output impedance
  60. pete millet 807 amp
  61. Lost Negative Bias-Fixed Bias
  62. Aikido ('dead quiet') output impedance
  63. Looking for lineamp buffer schematics
  64. Nagra VPA 845
  65. How to match 6C45?
  66. Yet another question about cathode bias (led+pnp)
  67. Ideal System for 1960?
  68. What replaces an IN541 diode?
  69. Bottlehead Eros or Tube4Hifi PH16
  70. Psvane 2a3 T Mk II reliable vender
  71. Odd Wima cap markings
  72. Chinese Amp kit experience
  73. Considerations about headph. OCL
  74. Trying to solve a Plate Follower Problem
  75. Nichicon Caps
  76. Footprint Noval ECC83 Altium
  77. Interference in hybrid amp
  78. wiring DHT filaments with center tapped secondaries
  79. B+ of Curcio Daniel II
  80. Stepped Attenuators Questions
  81. Noisy Ground? (Probably not a loop)
  82. New Production Telefunken
  83. Tube horizontal mounting position
  84. "Ask Jan First" parts website in Germany
  85. EZ215 Stereo 5881 Amp Project
  86. CCS help dn2540 send 340v to the chassis
  87. That's What She Said RH84 Build Log
  88. Help figuring out this output transformer.
  89. 5881 PPP Cathode Bias B+
  90. Measuring DHT filament V with minimal effect.
  91. 100hz hum with Audio Research vs-55
  92. Volume potentiometer
  93. Driver for 2A3C
  94. Regulated B+ sounds worse?
  95. Sylvania console amp rebuild...
  96. E130L Micron
  97. Question Re: Ground Loop Breakers
  98. Source for D3A/7721?
  99. ID a salvaged choke
  100. Magnetwire gauge size converted to metric
  101. ccs what is the best way
  102. parafeed test/measurement setup question.
  103. how do balance pots work?
  104. Issue with parafeed in SPICE
  105. GU-50 Dissected
  106. Need help on ground wiring for Scott 222-B
  107. Heathkit A9-C Mod
  108. Need a 240v, 5vac - 6-10A rectifier transformer
  109. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  110. 6AS7 SET amp discussion from Photo Gallery
  111. DHT 100hz hum
  112. HP 8903B and Pete Millett's Software Problem ?
  113. How to identify an ARC D70 version ?
  114. Valve amp first build - questions
  115. Transfrmer Impedance Question
  116. Disappointing results from RH84
  117. Anyone Loose a Counterpoint SA-5000?
  118. Installing a 610 in to a B&K 500
  119. My first tube preamp (4S)....
  120. Recycling old iron with stiff wires.
  121. 6EM7 as driver... help !!!
  122. changing R1 value in SE amp
  123. Heater CCS makes for low voltage
  124. DHT & Indirect on same line?
  125. Which tube preamplifier kit for LM3886 amplifier?
  126. budgie pre-amp
  127. ecl82 class A pp, need schematic
  128. Input low pass preferred method
  129. cary SLP50A
  130. se output options for single/balanced tda1541
  131. FM noise in Fisher 90-T in FM mode
  132. ST Triodes?
  133. TUBECAD SE.
  134. RH84 build with SS recto and voltage doubler (any input?)
  135. Tube identification
  136. Brand new cap overheating - argh
  137. High Power Valves
  138. Tubelab SSE B+ and cathode resistor questions
  139. HIFI world 6080 se
  140. EF86 triode question
  141. Connecting a Headphone Jack to a Preamp
  142. PSE 300B "French connexion"
  143. Making a custom tube characteristic graph
  144. 300B DRD power supply
  145. Insanely High Common Mode Voltage Shunt Measurement
  146. Heathkit AA-151 troubles
  147. Tube Power supply question...
  148. Noob question on power transformer primary input voltage
  149. Dynaco ST35 testing for a blown power transformer
  150. 6n6p tube buffer
  151. Welborne Labs
  152. GU-50 triode
  153. Help track down noise in gyrator
  154. Earphone Amp Improvements
  155. Protecting Wire
  156. 45 SET : tubelab vs get*set*go vs ?
  157. 6SL7 in Maggy 175 amp...
  158. Heater soft start for series-connected preamp valves
  159. low/no gain follower
  160. Data for 6BD2A or 6BD2
  161. isolation test
  162. Western Electric 437A preamp
  163. solid-state rectrification
  164. Class AB
  165. push-pull
  166. Need help ID tango-lookalike transformers
  167. TV Valves blast from the past..
  168. Tubes suggestions for parafeed headphones amp ?
  169. CCS Loadline
  170. Universal pover supply for ECC85 EL84
  171. Conversion Project
  172. Dynaco PAS I/O PCB Grounding
  173. CCS for anode load
  174. OTL Power Supply: Halfwave vs Virtual Ground
  175. Can NOS tubes have emission staining on the glass?
  176. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  177. Capacitor Drain for Tube Bench Power Supply ?
  178. Diodes, diodes, diodes...
  179. Grid leak resistors and dc-coupling
  180. Output transformer at speaker?
  181. Newbie just wondering if this PP amp looks ok
  182. 6P36S push pull HiFi amp
  183. Another Output Transformer Wiring Question
  184. Cathode bias for EL84 PPP
  185. Output Transformer Wiring Question
  186. NJ7P Tube Database
  187. solving my old radiogram sound issues - help
  188. 6H9c Idle Current.
  189. 12E1 SE amp suggestions.
  190. Direct Coupled Output Stage, DC Bias Balance
  191. Pre-amp tube suggestions for 2A3 output tube
  192. AirTight ATM-1 Schematic
  193. Counterpoint SA 5000 Service manual and PSU
  194. Rectifier tube ? - Berman 76 preamp
  195. Cathode feedback (SE amp)
  196. Will anybody interest in stamp size ccs module?
  197. Fairchild voltage questions
  198. Help with a Sylvania 7695 Project
  199. Flicker Noise dominates triode noise in audio (AES)
  200. A tube for SE with 1k-1k5 load
  201. scott stereomaster 233 restoration
  202. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  203. What to do with C3g tubes
  204. Can anyone ID an output transformer's part number?
  205. Nestorovic NA-1 & Alpha-1 Schematics
  206. Data for 6BD2
  207. Ken Shindo R.I.P
  208. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  209. Seas Trym with SE KT88 amplifier?
  210. 845-Amp-IT-Coupled
  211. Data for 6RA3
  212. Miniwatt N3 not turning on!
  213. I need ideas on a can capacitor
  214. Help with tube for power supply...
  215. AVC vs TVC for 10y line preamp
  216. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  217. help on 845 amp
  218. High voltage power tube question
  219. Tribute OPT for PSE 300B
  220. Floating Paraphase.
  221. 6Q7G as driver in RH807
  222. Custom tubes4hifi m-125 monoblocks
  223. Antique Audio Preamlifier made in USA
  224. directly heated tube rectifiers
  225. Biasing a 12EA6 low voltage pentode
  226. Power supply doubt
  227. Vinyl Savor's Octal 6GL7 preamp?
  228. 837 tube
  229. Tone control bypass (Kontakt KT-7)
  230. drdwers
  231. Amplifier Sensitivity?
  232. identify nickel laminations
  233. Recapping Vintage EL84 amp
  234. opinion on dynaco mark VI
  235. How can i have 450 Volts ?
  236. Balanced Preamp
  237. ecc99-300b
  238. Question about the tube specs/testing?
  239. Transformer Winding Configuration, Hafler 2,815,402
  240. PSU with SS Choke for Loftin-White 2a3.
  241. HP 8903 Pete Millet's Software on Window 8 ?
  242. Cathode Destruction
  243. Earth SuperBass B-2000 bass head info needed
  244. More radio shack dissapointment
  245. What to do with transformer secondary when used as a choke?
  246. Slight transformer buzzing in Engineers Amp
  247. Couple Gyrator Questions
  248. Shishido/Loftin-White 2A3/45 Extasy..
  249. When is a tube not a Valve?
  250. Relay Recommendataion

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