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  1. Yet another question about cathode bias (led+pnp)
  2. Ideal System for 1960?
  3. What replaces an IN541 diode?
  4. Bottlehead Eros or Tube4Hifi PH16
  5. Psvane 2a3 T Mk II reliable vender
  6. Odd Wima cap markings
  7. Chinese Amp kit experience
  8. Considerations about headph. OCL
  9. Trying to solve a Plate Follower Problem
  10. Nichicon Caps
  11. Footprint Noval ECC83 Altium
  12. Interference in hybrid amp
  13. wiring DHT filaments with center tapped secondaries
  14. B+ of Curcio Daniel II
  15. Stepped Attenuators Questions
  16. Noisy Ground? (Probably not a loop)
  17. New Production Telefunken
  18. Tube horizontal mounting position
  19. "Ask Jan First" parts website in Germany
  20. EZ215 Stereo 5881 Amp Project
  21. CCS help dn2540 send 340v to the chassis
  22. That's What She Said RH84 Build Log
  23. Help figuring out this output transformer.
  24. 5881 PPP Cathode Bias B+
  25. Measuring DHT filament V with minimal effect.
  26. 100hz hum with Audio Research vs-55
  27. Volume potentiometer
  28. Driver for 2A3C
  29. Regulated B+ sounds worse?
  30. Sylvania console amp rebuild...
  31. E130L Micron
  32. Question Re: Ground Loop Breakers
  33. Source for D3A/7721?
  34. ID a salvaged choke
  35. Magnetwire gauge size converted to metric
  36. ccs what is the best way
  37. parafeed test/measurement setup question.
  38. how do balance pots work?
  39. Issue with parafeed in SPICE
  40. GU-50 Dissected
  41. Need help on ground wiring for Scott 222-B
  42. Heathkit A9-C Mod
  43. Need a 240v, 5vac - 6-10A rectifier transformer
  44. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  45. 6AS7 SET amp discussion from Photo Gallery
  46. DHT 100hz hum
  47. HP 8903B and Pete Millett's Software Problem ?
  48. How to identify an ARC D70 version ?
  49. Valve amp first build - questions
  50. Transfrmer Impedance Question
  51. Disappointing results from RH84
  52. Anyone Loose a Counterpoint SA-5000?
  53. Installing a 610 in to a B&K 500
  54. My first tube preamp (4S)....
  55. Recycling old iron with stiff wires.
  56. 6EM7 as driver... help !!!
  57. changing R1 value in SE amp
  58. Heater CCS makes for low voltage
  59. DHT & Indirect on same line?
  60. Which tube preamplifier kit for LM3886 amplifier?
  61. budgie pre-amp
  62. ecl82 class A pp, need schematic
  63. Input low pass preferred method
  64. cary SLP50A
  65. se output options for single/balanced tda1541
  66. FM noise in Fisher 90-T in FM mode
  67. ST Triodes?
  68. TUBECAD SE.
  69. RH84 build with SS recto and voltage doubler (any input?)
  70. Tube identification
  71. Brand new cap overheating - argh
  72. High Power Valves
  73. Tubelab SSE B+ and cathode resistor questions
  74. HIFI world 6080 se
  75. EF86 triode question
  76. Connecting a Headphone Jack to a Preamp
  77. PSE 300B "French connexion"
  78. Making a custom tube characteristic graph
  79. 300B DRD power supply
  80. Insanely High Common Mode Voltage Shunt Measurement
  81. Heathkit AA-151 troubles
  82. Tube Power supply question...
  83. Noob question on power transformer primary input voltage
  84. Dynaco ST35 testing for a blown power transformer
  85. 6n6p tube buffer
  86. Welborne Labs
  87. GU-50 triode
  88. Help track down noise in gyrator
  89. Earphone Amp Improvements
  90. Protecting Wire
  91. 45 SET : tubelab vs get*set*go vs ?
  92. 6SL7 in Maggy 175 amp...
  93. Heater soft start for series-connected preamp valves
  94. low/no gain follower
  95. Data for 6BD2A or 6BD2
  96. isolation test
  97. Western Electric 437A preamp
  98. solid-state rectrification
  99. Class AB
  100. push-pull
  101. Need help ID tango-lookalike transformers
  102. TV Valves blast from the past..
  103. Tubes suggestions for parafeed headphones amp ?
  104. CCS Loadline
  105. Universal pover supply for ECC85 EL84
  106. Conversion Project
  107. Dynaco PAS I/O PCB Grounding
  108. CCS for anode load
  109. OTL Power Supply: Halfwave vs Virtual Ground
  110. Can NOS tubes have emission staining on the glass?
  111. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  112. Capacitor Drain for Tube Bench Power Supply ?
  113. Diodes, diodes, diodes...
  114. Grid leak resistors and dc-coupling
  115. Output transformer at speaker?
  116. Newbie just wondering if this PP amp looks ok
  117. 6P36S push pull HiFi amp
  118. Another Output Transformer Wiring Question
  119. Cathode bias for EL84 PPP
  120. Output Transformer Wiring Question
  121. NJ7P Tube Database
  122. solving my old radiogram sound issues - help
  123. 6H9c Idle Current.
  124. 12E1 SE amp suggestions.
  125. Direct Coupled Output Stage, DC Bias Balance
  126. Pre-amp tube suggestions for 2A3 output tube
  127. AirTight ATM-1 Schematic
  128. Counterpoint SA 5000 Service manual and PSU
  129. Rectifier tube ? - Berman 76 preamp
  130. Cathode feedback (SE amp)
  131. Will anybody interest in stamp size ccs module?
  132. Fairchild voltage questions
  133. Help with a Sylvania 7695 Project
  134. Flicker Noise dominates triode noise in audio (AES)
  135. A tube for SE with 1k-1k5 load
  136. scott stereomaster 233 restoration
  137. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  138. What to do with C3g tubes
  139. Can anyone ID an output transformer's part number?
  140. Nestorovic NA-1 & Alpha-1 Schematics
  141. Data for 6BD2
  142. Ken Shindo R.I.P
  143. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  144. Seas Trym with SE KT88 amplifier?
  145. 845-Amp-IT-Coupled
  146. Data for 6RA3
  147. Miniwatt N3 not turning on!
  148. I need ideas on a can capacitor
  149. Help with tube for power supply...
  150. AVC vs TVC for 10y line preamp
  151. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  152. help on 845 amp
  153. High voltage power tube question
  154. Tribute OPT for PSE 300B
  155. Floating Paraphase.
  156. 6Q7G as driver in RH807
  157. Custom tubes4hifi m-125 monoblocks
  158. Antique Audio Preamlifier made in USA
  159. directly heated tube rectifiers
  160. Biasing a 12EA6 low voltage pentode
  161. Power supply doubt
  162. Vinyl Savor's Octal 6GL7 preamp?
  163. 837 tube
  164. Tone control bypass (Kontakt KT-7)
  165. drdwers
  166. Amplifier Sensitivity?
  167. identify nickel laminations
  168. Recapping Vintage EL84 amp
  169. opinion on dynaco mark VI
  170. How can i have 450 Volts ?
  171. Balanced Preamp
  172. ecc99-300b
  173. Question about the tube specs/testing?
  174. Transformer Winding Configuration, Hafler 2,815,402
  175. PSU with SS Choke for Loftin-White 2a3.
  176. HP 8903 Pete Millet's Software on Window 8 ?
  177. Cathode Destruction
  178. Earth SuperBass B-2000 bass head info needed
  179. More radio shack dissapointment
  180. What to do with transformer secondary when used as a choke?
  181. Slight transformer buzzing in Engineers Amp
  182. Couple Gyrator Questions
  183. Shishido/Loftin-White 2A3/45 Extasy..
  184. When is a tube not a Valve?
  185. Relay Recommendataion
  186. 6080 monotriod amplifier
  187. Tetra Sans PS Phono Stage Power Supply
  188. transformer test
  189. Could someone tell me more about the Mesa Boogie Strategy 400?
  190. New OTL headphone project with EC88 and 6080
  191. Philips Tube Code
  192. Edcor GXPP vs. CXPP
  193. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  194. Marshall Guitar Conversion 12AX7 Replacement
  195. affordable potted power transformer?
  196. Am I pushing the envelope too far? Layout concerns.
  197. Pete Millet's Uniamp
  198. 6211 for???
  199. Picking an output transformer: power vs. sound quality
  200. Tube emulation with transistors
  201. Altec 1570b Tube Swap
  202. Popping stepped attenuator
  203. 6922 driver/cathodyne - direct coupled
  204. Solid state rectifier with these tubes
  205. Need advice -- Improving an old tube amp
  206. KT88 SE developed a buzz
  207. Guidance on amp design
  208. OTL3 Autograph Series
  209. DAC Tube i/v help!
  210. Need help figuring out a tube amp!
  211. Parallel 12AT7 output stage design?
  212. 6SN7 SRPP
  213. Problem Bi-Amping
  214. Amplifier recommendation
  215. DIY tube amplifier got no sound but all tubes are fired up.
  216. Circuit for Melos 333
  217. DHT Tube regulated power supply
  218. Akai M8 Restoration, newbie questions
  219. Bench Power Supply - what to get?
  220. Telefunken RS241 Design Help
  221. Telefunken Hymnus 5328 MX console
  222. Some Dummy DHT Questions
  223. Inductance loading tube stage questions
  224. Simple tube kit for tube sound ?
  225. Voltage Divider with Capacitor Across Resistor to Ground
  226. FM Demodulator for Tube receivers
  227. The best amp to DIY?
  228. SE Tubelab / EL34b tubes / Transformers
  229. Heath Kit Pre Amp
  230. Preamp hiss noise
  231. Tube preamp?
  232. 417a load line
  233. 6N1 + 6P3P build, need some help.
  234. Caps connected in series in Audio Note kit 4
  235. Ground loop cure?
  236. Dynaco ST-70 Clone
  237. Op Amp Phase Splitter
  238. Idea for ECC85 or EM84?
  239. Why no sound?
  240. single ended tube amp sounds itself
  241. Proper Pentode Usage 717A (713A)
  242. Help with Mullard 5 20 project
  243. Help on Negative Feedback in KT66 PP
  244. Trying to understand 6BM8 regulator (audio note clone)
  245. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  246. CR Kalypso Amp with output stage problem- Please help!
  247. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  248. EZ81 Load
  249. Rectifier question
  250. 6sn7-300b

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