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  1. Valve heater question
  2. Phase inverter adjustment - Fisher 80AZ
  3. Repurposing a Bogen CHB-35A
  4. SMPS
  5. Interstage and bias failure
  6. Grid 2 current for GU19-1
  7. 6x5 tube
  8. IT coupled 6BG6GA
  9. Mystery noise has got me baffled
  10. Dynaco PAS: too much liposuction?
  11. LP Tape Noise
  12. YAKOV ARONOV MA-100
  13. Help for balance-tone control-mode selector bypass
  14. Opinions please: seeking a first class DIY SET amp design
  15. PSU for 6N6P
  16. HOT B+ capacitors!
  17. Analog meter monitoring HT supply
  18. Lamm LL2.1 DC Offset problem
  19. 6L6GT/6SJ7 Valve Amp DIY
  20. BHExchange for BottleHead's
  21. 6BY5GA elevated heater question
  22. Tone controls
  23. EL84 "IP" questions
  24. KIT Single ended KT88
  25. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  26. All tube cap tube amp?
  27. 12AX7 preamp for DAC
  28. Grid resistors -> GND
  29. OTL headphone amp distorting & clipping: weak power supply?
  30. Broken bias resistors (Yaqin MC-10L)
  31. Tube Enclosure suggestion from Europe.
  32. Benefit/SQ of tube stage at the input of ss power amp
  33. Is 6907 and QQV03-20A tubes are same?
  34. Found some chokes
  35. 6SN7 at low plate currents
  36. 12AU7, 12BH7, Darker Less Bright Option
  37. Heater current effects
  38. Not using all the sections on multi-section cap
  39. DC heater supply dies on me
  40. 1972 Leak Varislope 2 Stereo
  41. OPT secondary ground, stacked supplies
  42. OTL for HeaPhone
  43. Voltage doubler and filament supply
  44. Please suggest me a 6V6 class AB amp
  45. Need Review of wiring up of this SRPP 6AS7 tube amp
  46. Hum in a triode 1H6G...help !
  47. 40w Class A PP KT66?
  48. My new small amp EL84 SE Triode
  49. tube preamp output impedance
  50. pete millet 807 amp
  51. Lost Negative Bias-Fixed Bias
  52. Aikido ('dead quiet') output impedance
  53. Looking for lineamp buffer schematics
  54. Nagra VPA 845
  55. How to match 6C45?
  56. Yet another question about cathode bias (led+pnp)
  57. Ideal System for 1960?
  58. What replaces an IN541 diode?
  59. Bottlehead Eros or Tube4Hifi PH16
  60. Psvane 2a3 T Mk II reliable vender
  61. Odd Wima cap markings
  62. Chinese Amp kit experience
  63. Considerations about headph. OCL
  64. Trying to solve a Plate Follower Problem
  65. Nichicon Caps
  66. Footprint Noval ECC83 Altium
  67. Interference in hybrid amp
  68. wiring DHT filaments with center tapped secondaries
  69. B+ of Curcio Daniel II
  70. Stepped Attenuators Questions
  71. Noisy Ground? (Probably not a loop)
  72. New Production Telefunken
  73. Tube horizontal mounting position
  74. "Ask Jan First" parts website in Germany
  75. EZ215 Stereo 5881 Amp Project
  76. CCS help dn2540 send 340v to the chassis
  77. That's What She Said RH84 Build Log
  78. Help figuring out this output transformer.
  79. 5881 PPP Cathode Bias B+
  80. Measuring DHT filament V with minimal effect.
  81. 100hz hum with Audio Research vs-55
  82. Volume potentiometer
  83. Driver for 2A3C
  84. Regulated B+ sounds worse?
  85. Sylvania console amp rebuild...
  86. E130L Micron
  87. Question Re: Ground Loop Breakers
  88. Source for D3A/7721?
  89. ID a salvaged choke
  90. Magnetwire gauge size converted to metric
  91. ccs what is the best way
  92. parafeed test/measurement setup question.
  93. how do balance pots work?
  94. Issue with parafeed in SPICE
  95. GU-50 Dissected
  96. Need help on ground wiring for Scott 222-B
  97. Heathkit A9-C Mod
  98. Need a 240v, 5vac - 6-10A rectifier transformer
  99. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  100. 6AS7 SET amp discussion from Photo Gallery
  101. DHT 100hz hum
  102. HP 8903B and Pete Millett's Software Problem ?
  103. How to identify an ARC D70 version ?
  104. Valve amp first build - questions
  105. Transfrmer Impedance Question
  106. Disappointing results from RH84
  107. Anyone Loose a Counterpoint SA-5000?
  108. Installing a 610 in to a B&K 500
  109. My first tube preamp (4S)....
  110. Recycling old iron with stiff wires.
  111. 6EM7 as driver... help !!!
  112. changing R1 value in SE amp
  113. Heater CCS makes for low voltage
  114. DHT & Indirect on same line?
  115. Which tube preamplifier kit for LM3886 amplifier?
  116. budgie pre-amp
  117. ecl82 class A pp, need schematic
  118. Input low pass preferred method
  119. cary SLP50A
  120. se output options for single/balanced tda1541
  121. FM noise in Fisher 90-T in FM mode
  122. ST Triodes?
  123. TUBECAD SE.
  124. RH84 build with SS recto and voltage doubler (any input?)
  125. Tube identification
  126. Brand new cap overheating - argh
  127. High Power Valves
  128. Tubelab SSE B+ and cathode resistor questions
  129. HIFI world 6080 se
  130. EF86 triode question
  131. Connecting a Headphone Jack to a Preamp
  132. PSE 300B "French connexion"
  133. Making a custom tube characteristic graph
  134. 300B DRD power supply
  135. Insanely High Common Mode Voltage Shunt Measurement
  136. Heathkit AA-151 troubles
  137. Tube Power supply question...
  138. Noob question on power transformer primary input voltage
  139. Dynaco ST35 testing for a blown power transformer
  140. 6n6p tube buffer
  141. Welborne Labs
  142. GU-50 triode
  143. Help track down noise in gyrator
  144. Earphone Amp Improvements
  145. Protecting Wire
  146. 45 SET : tubelab vs get*set*go vs ?
  147. 6SL7 in Maggy 175 amp...
  148. Heater soft start for series-connected preamp valves
  149. low/no gain follower
  150. Data for 6BD2A or 6BD2
  151. isolation test
  152. Western Electric 437A preamp
  153. solid-state rectrification
  154. Class AB
  155. push-pull
  156. Need help ID tango-lookalike transformers
  157. TV Valves blast from the past..
  158. Tubes suggestions for parafeed headphones amp ?
  159. CCS Loadline
  160. Universal pover supply for ECC85 EL84
  161. Conversion Project
  162. Dynaco PAS I/O PCB Grounding
  163. CCS for anode load
  164. OTL Power Supply: Halfwave vs Virtual Ground
  165. Can NOS tubes have emission staining on the glass?
  166. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  167. Capacitor Drain for Tube Bench Power Supply ?
  168. Diodes, diodes, diodes...
  169. Grid leak resistors and dc-coupling
  170. Output transformer at speaker?
  171. Newbie just wondering if this PP amp looks ok
  172. 6P36S push pull HiFi amp
  173. Another Output Transformer Wiring Question
  174. Cathode bias for EL84 PPP
  175. Output Transformer Wiring Question
  176. NJ7P Tube Database
  177. solving my old radiogram sound issues - help
  178. 6H9c Idle Current.
  179. 12E1 SE amp suggestions.
  180. Direct Coupled Output Stage, DC Bias Balance
  181. Pre-amp tube suggestions for 2A3 output tube
  182. AirTight ATM-1 Schematic
  183. Counterpoint SA 5000 Service manual and PSU
  184. Rectifier tube ? - Berman 76 preamp
  185. Cathode feedback (SE amp)
  186. Will anybody interest in stamp size ccs module?
  187. Fairchild voltage questions
  188. Help with a Sylvania 7695 Project
  189. Flicker Noise dominates triode noise in audio (AES)
  190. A tube for SE with 1k-1k5 load
  191. scott stereomaster 233 restoration
  192. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  193. What to do with C3g tubes
  194. Can anyone ID an output transformer's part number?
  195. Nestorovic NA-1 & Alpha-1 Schematics
  196. Data for 6BD2
  197. Ken Shindo R.I.P
  198. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  199. Seas Trym with SE KT88 amplifier?
  200. 845-Amp-IT-Coupled
  201. Data for 6RA3
  202. Miniwatt N3 not turning on!
  203. I need ideas on a can capacitor
  204. Help with tube for power supply...
  205. AVC vs TVC for 10y line preamp
  206. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  207. help on 845 amp
  208. High voltage power tube question
  209. Tribute OPT for PSE 300B
  210. Floating Paraphase.
  211. 6Q7G as driver in RH807
  212. Custom tubes4hifi m-125 monoblocks
  213. Antique Audio Preamlifier made in USA
  214. directly heated tube rectifiers
  215. Biasing a 12EA6 low voltage pentode
  216. Power supply doubt
  217. Vinyl Savor's Octal 6GL7 preamp?
  218. 837 tube
  219. Tone control bypass (Kontakt KT-7)
  220. drdwers
  221. Amplifier Sensitivity?
  222. identify nickel laminations
  223. Recapping Vintage EL84 amp
  224. opinion on dynaco mark VI
  225. How can i have 450 Volts ?
  226. Balanced Preamp
  227. ecc99-300b
  228. Question about the tube specs/testing?
  229. Transformer Winding Configuration, Hafler 2,815,402
  230. PSU with SS Choke for Loftin-White 2a3.
  231. HP 8903 Pete Millet's Software on Window 8 ?
  232. Cathode Destruction
  233. Earth SuperBass B-2000 bass head info needed
  234. More radio shack dissapointment
  235. What to do with transformer secondary when used as a choke?
  236. Slight transformer buzzing in Engineers Amp
  237. Couple Gyrator Questions
  238. Shishido/Loftin-White 2A3/45 Extasy..
  239. When is a tube not a Valve?
  240. Relay Recommendataion
  241. 6080 monotriod amplifier
  242. Tetra Sans PS Phono Stage Power Supply
  243. transformer test
  244. Could someone tell me more about the Mesa Boogie Strategy 400?
  245. New OTL headphone project with EC88 and 6080
  246. Philips Tube Code
  247. Edcor GXPP vs. CXPP
  248. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  249. Marshall Guitar Conversion 12AX7 Replacement
  250. affordable potted power transformer?

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