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  1. Installing a 610 in to a B&K 500
  2. My first tube preamp (4S)....
  3. Recycling old iron with stiff wires.
  4. 6EM7 as driver... help !!!
  5. changing R1 value in SE amp
  6. Heater CCS makes for low voltage
  7. DHT & Indirect on same line?
  8. Which tube preamplifier kit for LM3886 amplifier?
  9. budgie pre-amp
  10. ecl82 class A pp, need schematic
  11. Input low pass preferred method
  12. cary SLP50A
  13. se output options for single/balanced tda1541
  14. FM noise in Fisher 90-T in FM mode
  15. ST Triodes?
  16. TUBECAD SE.
  17. RH84 build with SS recto and voltage doubler (any input?)
  18. Tube identification
  19. Brand new cap overheating - argh
  20. High Power Valves
  21. Tubelab SSE B+ and cathode resistor questions
  22. HIFI world 6080 se
  23. EF86 triode question
  24. Connecting a Headphone Jack to a Preamp
  25. PSE 300B "French connexion"
  26. Making a custom tube characteristic graph
  27. 300B DRD power supply
  28. Insanely High Common Mode Voltage Shunt Measurement
  29. Heathkit AA-151 troubles
  30. Tube Power supply question...
  31. Noob question on power transformer primary input voltage
  32. Dynaco ST35 testing for a blown power transformer
  33. 6n6p tube buffer
  34. Welborne Labs
  35. GU-50 triode
  36. Help track down noise in gyrator
  37. Earphone Amp Improvements
  38. Protecting Wire
  39. 45 SET : tubelab vs get*set*go vs ?
  40. 6SL7 in Maggy 175 amp...
  41. Heater soft start for series-connected preamp valves
  42. low/no gain follower
  43. Data for 6BD2A or 6BD2
  44. isolation test
  45. Western Electric 437A preamp
  46. solid-state rectrification
  47. Class AB
  48. push-pull
  49. Need help ID tango-lookalike transformers
  50. TV Valves blast from the past..
  51. Tubes suggestions for parafeed headphones amp ?
  52. CCS Loadline
  53. Universal pover supply for ECC85 EL84
  54. Conversion Project
  55. Dynaco PAS I/O PCB Grounding
  56. CCS for anode load
  57. OTL Power Supply: Halfwave vs Virtual Ground
  58. Can NOS tubes have emission staining on the glass?
  59. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  60. Capacitor Drain for Tube Bench Power Supply ?
  61. Diodes, diodes, diodes...
  62. Grid leak resistors and dc-coupling
  63. Output transformer at speaker?
  64. Newbie just wondering if this PP amp looks ok
  65. 6P36S push pull HiFi amp
  66. Another Output Transformer Wiring Question
  67. Cathode bias for EL84 PPP
  68. Output Transformer Wiring Question
  69. NJ7P Tube Database
  70. solving my old radiogram sound issues - help
  71. 6H9c Idle Current.
  72. 12E1 SE amp suggestions.
  73. Direct Coupled Output Stage, DC Bias Balance
  74. Pre-amp tube suggestions for 2A3 output tube
  75. AirTight ATM-1 Schematic
  76. Counterpoint SA 5000 Service manual and PSU
  77. Rectifier tube ? - Berman 76 preamp
  78. Cathode feedback (SE amp)
  79. Will anybody interest in stamp size ccs module?
  80. Fairchild voltage questions
  81. Help with a Sylvania 7695 Project
  82. Flicker Noise dominates triode noise in audio (AES)
  83. A tube for SE with 1k-1k5 load
  84. scott stereomaster 233 restoration
  85. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  86. What to do with C3g tubes
  87. Can anyone ID an output transformer's part number?
  88. Nestorovic NA-1 & Alpha-1 Schematics
  89. Data for 6BD2
  90. Ken Shindo R.I.P
  91. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  92. Seas Trym with SE KT88 amplifier?
  93. 845-Amp-IT-Coupled
  94. Data for 6RA3
  95. Miniwatt N3 not turning on!
  96. I need ideas on a can capacitor
  97. Help with tube for power supply...
  98. AVC vs TVC for 10y line preamp
  99. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  100. help on 845 amp
  101. High voltage power tube question
  102. Tribute OPT for PSE 300B
  103. Floating Paraphase.
  104. 6Q7G as driver in RH807
  105. Custom tubes4hifi m-125 monoblocks
  106. Antique Audio Preamlifier made in USA
  107. directly heated tube rectifiers
  108. Biasing a 12EA6 low voltage pentode
  109. Power supply doubt
  110. Vinyl Savor's Octal 6GL7 preamp?
  111. 837 tube
  112. Tone control bypass (Kontakt KT-7)
  113. drdwers
  114. Amplifier Sensitivity?
  115. identify nickel laminations
  116. Recapping Vintage EL84 amp
  117. opinion on dynaco mark VI
  118. How can i have 450 Volts ?
  119. Balanced Preamp
  120. ecc99-300b
  121. Question about the tube specs/testing?
  122. Transformer Winding Configuration, Hafler 2,815,402
  123. PSU with SS Choke for Loftin-White 2a3.
  124. HP 8903 Pete Millet's Software on Window 8 ?
  125. Cathode Destruction
  126. Earth SuperBass B-2000 bass head info needed
  127. More radio shack dissapointment
  128. What to do with transformer secondary when used as a choke?
  129. Slight transformer buzzing in Engineers Amp
  130. Couple Gyrator Questions
  131. Shishido/Loftin-White 2A3/45 Extasy..
  132. When is a tube not a Valve?
  133. Relay Recommendataion
  134. 6080 monotriod amplifier
  135. Tetra Sans PS Phono Stage Power Supply
  136. transformer test
  137. Could someone tell me more about the Mesa Boogie Strategy 400?
  138. New OTL headphone project with EC88 and 6080
  139. Philips Tube Code
  140. Edcor GXPP vs. CXPP
  141. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  142. Marshall Guitar Conversion 12AX7 Replacement
  143. affordable potted power transformer?
  144. Am I pushing the envelope too far? Layout concerns.
  145. Pete Millet's Uniamp
  146. 6211 for???
  147. Picking an output transformer: power vs. sound quality
  148. Tube emulation with transistors
  149. Altec 1570b Tube Swap
  150. Popping stepped attenuator
  151. 6922 driver/cathodyne - direct coupled
  152. Solid state rectifier with these tubes
  153. Need advice -- Improving an old tube amp
  154. KT88 SE developed a buzz
  155. Guidance on amp design
  156. OTL3 Autograph Series
  157. DAC Tube i/v help!
  158. Need help figuring out a tube amp!
  159. Parallel 12AT7 output stage design?
  160. 6SN7 SRPP
  161. Problem Bi-Amping
  162. Amplifier recommendation
  163. DIY tube amplifier got no sound but all tubes are fired up.
  164. Circuit for Melos 333
  165. DHT Tube regulated power supply
  166. Akai M8 Restoration, newbie questions
  167. Bench Power Supply - what to get?
  168. Telefunken RS241 Design Help
  169. Telefunken Hymnus 5328 MX console
  170. Some Dummy DHT Questions
  171. Inductance loading tube stage questions
  172. Simple tube kit for tube sound ?
  173. Voltage Divider with Capacitor Across Resistor to Ground
  174. FM Demodulator for Tube receivers
  175. The best amp to DIY?
  176. SE Tubelab / EL34b tubes / Transformers
  177. Heath Kit Pre Amp
  178. Preamp hiss noise
  179. Tube preamp?
  180. 417a load line
  181. 6N1 + 6P3P build, need some help.
  182. Caps connected in series in Audio Note kit 4
  183. Ground loop cure?
  184. Dynaco ST-70 Clone
  185. Op Amp Phase Splitter
  186. Idea for ECC85 or EM84?
  187. Why no sound?
  188. single ended tube amp sounds itself
  189. Proper Pentode Usage 717A (713A)
  190. Help with Mullard 5 20 project
  191. Help on Negative Feedback in KT66 PP
  192. Trying to understand 6BM8 regulator (audio note clone)
  193. 6AS7 headphone amp with Sophia Electric Mesh plate 274B rec. tube
  194. CR Kalypso Amp with output stage problem- Please help!
  195. "PEAK INPUT SIGNAL GRID-TO-GRID" question.
  196. EZ81 Load
  197. Rectifier question
  198. 6sn7-300b
  199. Balanced tube phono stage
  200. Your favorite 12B4A for a preamp ?
  201. Voltage rating for output coupling caps in 6J1 tube buffer?
  202. Single stage 845 amp
  203. Eagle tube library
  204. Using Choke in Choke Input Power Supply ?
  205. 6550 wrong high bias...
  206. Floating Bridged CCS Loaded P-P Tube Amp
  207. What to do with a problem Counterpoint SA-12
  208. 6Z9P Mu Stage max anode-cathode voltage
  209. Audio Innovations Series 500 parts
  210. Hagerman Trumpet phonostage
  211. PS design...success or failure?
  212. Kuba Serenade Stereo Console - Part III - Replacing all caps
  213. schematic of Knight KP-70 preamp or anyone having this amp?
  214. 6N6P Cathode Follower design value
  215. Radiotron 32W PP amp from RDH3
  216. Heater filament questions
  217. 46 in ultralinear mode
  218. help needed need transformer prim 230/110 sec 300v appr. 20ma +6,3v or 12,6v
  219. Output transformer confusion
  220. need amp schematic help
  221. reviving an old Randall RGT100
  222. lm317 and heater supply.
  223. BJT Voltage Bootstrap - SLCF
  224. Ideas for a cheap 200mA tube rectified PSU
  225. Need help with tube rectifier
  226. Tube or Circuit Noise?
  227. JE Labs (Angela instr.) : your favorite 2A3 schematic ?
  228. Crack the Code Amp build 1000 Watt Tube Amplifier
  229. 12E1 in fixed bias - too much current!
  230. CD-DVD player vs Notebook-usb soundcard sensitivity issue
  231. photo of Knight KP-70 preamplifier for missing component
  232. heater wear sign?
  233. Musical Fidelty X-10D Clone
  234. 815 amp
  235. Jorgen Schou 31,5 OT connection
  236. Is there such a thing....
  237. Tube Rectifiers and Common Grounds
  238. vt4c.com copper tube socket mounts
  239. 1 Ohm Tap Output tranformers?
  240. Voltage Specs For Heaters-Is 2.4V Good Enough?
  241. Aikido with 5842
  242. Luxman MQ70
  243. Valve pre-amp schematic help needed
  244. valves' world - tossie Japan
  245. 211 amp , recognize the circuit?
  246. Tube Preamp: Remedy For Digital Glare?
  247. Tubelab SSE without tube rectifier
  248. Counterpoint 7A
  249. Low Z Out Dual Triode
  250. Push Pull circuit - controlling sensitivity

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