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  1. Tube horizontal mounting position
  2. "Ask Jan First" parts website in Germany
  3. EZ215 Stereo 5881 Amp Project
  4. CCS help dn2540 send 340v to the chassis
  5. That's What She Said RH84 Build Log
  6. Help figuring out this output transformer.
  7. 5881 PPP Cathode Bias B+
  8. Measuring DHT filament V with minimal effect.
  9. 100hz hum with Audio Research vs-55
  10. Volume potentiometer
  11. Driver for 2A3C
  12. Regulated B+ sounds worse?
  13. Sylvania console amp rebuild...
  14. E130L Micron
  15. Question Re: Ground Loop Breakers
  16. Source for D3A/7721?
  17. ID a salvaged choke
  18. Magnetwire gauge size converted to metric
  19. ccs what is the best way
  20. parafeed test/measurement setup question.
  21. how do balance pots work?
  22. Issue with parafeed in SPICE
  23. GU-50 Dissected
  24. Need help on ground wiring for Scott 222-B
  25. Heathkit A9-C Mod
  26. Need a 240v, 5vac - 6-10A rectifier transformer
  27. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  28. 6AS7 SET amp discussion from Photo Gallery
  29. DHT 100hz hum
  30. HP 8903B and Pete Millett's Software Problem ?
  31. How to identify an ARC D70 version ?
  32. Valve amp first build - questions
  33. Transfrmer Impedance Question
  34. Disappointing results from RH84
  35. Anyone Loose a Counterpoint SA-5000?
  36. Installing a 610 in to a B&K 500
  37. My first tube preamp (4S)....
  38. Recycling old iron with stiff wires.
  39. 6EM7 as driver... help !!!
  40. changing R1 value in SE amp
  41. Heater CCS makes for low voltage
  42. DHT & Indirect on same line?
  43. Which tube preamplifier kit for LM3886 amplifier?
  44. budgie pre-amp
  45. ecl82 class A pp, need schematic
  46. Input low pass preferred method
  47. cary SLP50A
  48. se output options for single/balanced tda1541
  49. FM noise in Fisher 90-T in FM mode
  50. ST Triodes?
  51. TUBECAD SE.
  52. RH84 build with SS recto and voltage doubler (any input?)
  53. Tube identification
  54. Brand new cap overheating - argh
  55. High Power Valves
  56. Tubelab SSE B+ and cathode resistor questions
  57. HIFI world 6080 se
  58. EF86 triode question
  59. Connecting a Headphone Jack to a Preamp
  60. PSE 300B "French connexion"
  61. Making a custom tube characteristic graph
  62. 300B DRD power supply
  63. Insanely High Common Mode Voltage Shunt Measurement
  64. Heathkit AA-151 troubles
  65. Tube Power supply question...
  66. Noob question on power transformer primary input voltage
  67. Dynaco ST35 testing for a blown power transformer
  68. 6n6p tube buffer
  69. Welborne Labs
  70. GU-50 triode
  71. Help track down noise in gyrator
  72. Earphone Amp Improvements
  73. Protecting Wire
  74. 45 SET : tubelab vs get*set*go vs ?
  75. 6SL7 in Maggy 175 amp...
  76. Heater soft start for series-connected preamp valves
  77. low/no gain follower
  78. Data for 6BD2A or 6BD2
  79. isolation test
  80. Western Electric 437A preamp
  81. solid-state rectrification
  82. Class AB
  83. push-pull
  84. Need help ID tango-lookalike transformers
  85. TV Valves blast from the past..
  86. Tubes suggestions for parafeed headphones amp ?
  87. CCS Loadline
  88. Universal pover supply for ECC85 EL84
  89. Conversion Project
  90. Dynaco PAS I/O PCB Grounding
  91. CCS for anode load
  92. OTL Power Supply: Halfwave vs Virtual Ground
  93. Can NOS tubes have emission staining on the glass?
  94. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  95. Capacitor Drain for Tube Bench Power Supply ?
  96. Diodes, diodes, diodes...
  97. Grid leak resistors and dc-coupling
  98. Output transformer at speaker?
  99. Newbie just wondering if this PP amp looks ok
  100. 6P36S push pull HiFi amp
  101. Another Output Transformer Wiring Question
  102. Cathode bias for EL84 PPP
  103. Output Transformer Wiring Question
  104. NJ7P Tube Database
  105. solving my old radiogram sound issues - help
  106. 6H9c Idle Current.
  107. 12E1 SE amp suggestions.
  108. Direct Coupled Output Stage, DC Bias Balance
  109. Pre-amp tube suggestions for 2A3 output tube
  110. AirTight ATM-1 Schematic
  111. Counterpoint SA 5000 Service manual and PSU
  112. Rectifier tube ? - Berman 76 preamp
  113. Cathode feedback (SE amp)
  114. Will anybody interest in stamp size ccs module?
  115. Fairchild voltage questions
  116. Help with a Sylvania 7695 Project
  117. Flicker Noise dominates triode noise in audio (AES)
  118. A tube for SE with 1k-1k5 load
  119. scott stereomaster 233 restoration
  120. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  121. What to do with C3g tubes
  122. Can anyone ID an output transformer's part number?
  123. Nestorovic NA-1 & Alpha-1 Schematics
  124. Data for 6BD2
  125. Ken Shindo R.I.P
  126. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  127. Seas Trym with SE KT88 amplifier?
  128. 845-Amp-IT-Coupled
  129. Data for 6RA3
  130. Miniwatt N3 not turning on!
  131. I need ideas on a can capacitor
  132. Help with tube for power supply...
  133. AVC vs TVC for 10y line preamp
  134. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  135. help on 845 amp
  136. High voltage power tube question
  137. Tribute OPT for PSE 300B
  138. Floating Paraphase.
  139. 6Q7G as driver in RH807
  140. Custom tubes4hifi m-125 monoblocks
  141. Antique Audio Preamlifier made in USA
  142. directly heated tube rectifiers
  143. Biasing a 12EA6 low voltage pentode
  144. Power supply doubt
  145. Vinyl Savor's Octal 6GL7 preamp?
  146. 837 tube
  147. Tone control bypass (Kontakt KT-7)
  148. drdwers
  149. Amplifier Sensitivity?
  150. identify nickel laminations
  151. Recapping Vintage EL84 amp
  152. opinion on dynaco mark VI
  153. How can i have 450 Volts ?
  154. Balanced Preamp
  155. ecc99-300b
  156. Question about the tube specs/testing?
  157. Transformer Winding Configuration, Hafler 2,815,402
  158. PSU with SS Choke for Loftin-White 2a3.
  159. HP 8903 Pete Millet's Software on Window 8 ?
  160. Cathode Destruction
  161. Earth SuperBass B-2000 bass head info needed
  162. More radio shack dissapointment
  163. What to do with transformer secondary when used as a choke?
  164. Slight transformer buzzing in Engineers Amp
  165. Couple Gyrator Questions
  166. Shishido/Loftin-White 2A3/45 Extasy..
  167. When is a tube not a Valve?
  168. Relay Recommendataion
  169. 6080 monotriod amplifier
  170. Tetra Sans PS Phono Stage Power Supply
  171. transformer test
  172. Could someone tell me more about the Mesa Boogie Strategy 400?
  173. New OTL headphone project with EC88 and 6080
  174. Philips Tube Code
  175. Edcor GXPP vs. CXPP
  176. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  177. Marshall Guitar Conversion 12AX7 Replacement
  178. affordable potted power transformer?
  179. Am I pushing the envelope too far? Layout concerns.
  180. Pete Millet's Uniamp
  181. 6211 for???
  182. Picking an output transformer: power vs. sound quality
  183. Tube emulation with transistors
  184. Altec 1570b Tube Swap
  185. Popping stepped attenuator
  186. 6922 driver/cathodyne - direct coupled
  187. Solid state rectifier with these tubes
  188. Need advice -- Improving an old tube amp
  189. KT88 SE developed a buzz
  190. Guidance on amp design
  191. OTL3 Autograph Series
  192. DAC Tube i/v help!
  193. Need help figuring out a tube amp!
  194. Parallel 12AT7 output stage design?
  195. 6SN7 SRPP
  196. Problem Bi-Amping
  197. Amplifier recommendation
  198. DIY tube amplifier got no sound but all tubes are fired up.
  199. Circuit for Melos 333
  200. DHT Tube regulated power supply
  201. Akai M8 Restoration, newbie questions
  202. Bench Power Supply - what to get?
  203. Telefunken RS241 Design Help
  204. Telefunken Hymnus 5328 MX console
  205. Some Dummy DHT Questions
  206. Inductance loading tube stage questions
  207. Simple tube kit for tube sound ?
  208. Voltage Divider with Capacitor Across Resistor to Ground
  209. FM Demodulator for Tube receivers
  210. The best amp to DIY?
  211. SE Tubelab / EL34b tubes / Transformers
  212. Heath Kit Pre Amp
  213. Preamp hiss noise
  214. Tube preamp?
  215. 417a load line
  216. 6N1 + 6P3P build, need some help.
  217. Caps connected in series in Audio Note kit 4
  218. Ground loop cure?
  219. Dynaco ST-70 Clone
  220. Op Amp Phase Splitter
  221. Idea for ECC85 or EM84?
  222. Why no sound?
  223. single ended tube amp sounds itself
  224. Proper Pentode Usage 717A (713A)
  225. Help with Mullard 5 20 project
  226. Help on Negative Feedback in KT66 PP
  227. Trying to understand 6BM8 regulator (audio note clone)
  228. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  229. CR Kalypso Amp with output stage problem- Please help!
  230. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  231. EZ81 Load
  232. Rectifier question
  233. 6sn7-300b
  234. Balanced tube phono stage
  235. Your favorite 12B4A for a preamp ?
  236. Voltage rating for output coupling caps in 6J1 tube buffer?
  237. Single stage 845 amp
  238. Eagle tube library
  239. Using Choke in Choke Input Power Supply ?
  240. 6550 wrong high bias...
  241. Floating Bridged CCS Loaded P-P Tube Amp
  242. What to do with a problem Counterpoint SA-12
  243. 6Z9P Mu Stage max anode-cathode voltage
  244. Audio Innovations Series 500 parts
  245. Hagerman Trumpet phonostage
  246. PS design...success or failure?
  247. Kuba Serenade Stereo Console - Part III - Replacing all caps
  248. schematic of Knight KP-70 preamp or anyone having this amp?
  249. 6N6P Cathode Follower design value
  250. Radiotron 32W PP amp from RDH3

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