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  1. EL84 "IP" questions
  2. KIT Single ended KT88
  3. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  4. All tube cap tube amp?
  5. 12AX7 preamp for DAC
  6. Grid resistors -> GND
  7. OTL headphone amp distorting & clipping: weak power supply?
  8. Broken bias resistors (Yaqin MC-10L)
  9. Tube Enclosure suggestion from Europe.
  10. Benefit/SQ of tube stage at the input of ss power amp
  11. Is 6907 and QQV03-20A tubes are same?
  12. Found some chokes
  13. 6SN7 at low plate currents
  14. 12AU7, 12BH7, Darker Less Bright Option
  15. Heater current effects
  16. Not using all the sections on multi-section cap
  17. DC heater supply dies on me
  18. 1972 Leak Varislope 2 Stereo
  19. OPT secondary ground, stacked supplies
  20. OTL for HeaPhone
  21. Voltage doubler and filament supply
  22. Please suggest me a 6V6 class AB amp
  23. Need Review of wiring up of this SRPP 6AS7 tube amp
  24. Hum in a triode 1H6G...help !
  25. 40w Class A PP KT66?
  26. My new small amp EL84 SE Triode
  27. tube preamp output impedance
  28. pete millet 807 amp
  29. Lost Negative Bias-Fixed Bias
  30. Aikido ('dead quiet') output impedance
  31. Looking for lineamp buffer schematics
  32. Nagra VPA 845
  33. How to match 6C45?
  34. Yet another question about cathode bias (led+pnp)
  35. Ideal System for 1960?
  36. What replaces an IN541 diode?
  37. Bottlehead Eros or Tube4Hifi PH16
  38. Psvane 2a3 T Mk II reliable vender
  39. Odd Wima cap markings
  40. Chinese Amp kit experience
  41. Considerations about headph. OCL
  42. Trying to solve a Plate Follower Problem
  43. Nichicon Caps
  44. Footprint Noval ECC83 Altium
  45. Interference in hybrid amp
  46. wiring DHT filaments with center tapped secondaries
  47. B+ of Curcio Daniel II
  48. Stepped Attenuators Questions
  49. Noisy Ground? (Probably not a loop)
  50. New Production Telefunken
  51. Tube horizontal mounting position
  52. "Ask Jan First" parts website in Germany
  53. EZ215 Stereo 5881 Amp Project
  54. CCS help dn2540 send 340v to the chassis
  55. That's What She Said RH84 Build Log
  56. Help figuring out this output transformer.
  57. 5881 PPP Cathode Bias B+
  58. Measuring DHT filament V with minimal effect.
  59. 100hz hum with Audio Research vs-55
  60. Volume potentiometer
  61. Driver for 2A3C
  62. Regulated B+ sounds worse?
  63. Sylvania console amp rebuild...
  64. E130L Micron
  65. Question Re: Ground Loop Breakers
  66. Source for D3A/7721?
  67. ID a salvaged choke
  68. Magnetwire gauge size converted to metric
  69. ccs what is the best way
  70. parafeed test/measurement setup question.
  71. how do balance pots work?
  72. Issue with parafeed in SPICE
  73. GU-50 Dissected
  74. Need help on ground wiring for Scott 222-B
  75. Heathkit A9-C Mod
  76. Need a 240v, 5vac - 6-10A rectifier transformer
  77. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  78. 6AS7 SET amp discussion from Photo Gallery
  79. DHT 100hz hum
  80. HP 8903B and Pete Millett's Software Problem ?
  81. How to identify an ARC D70 version ?
  82. Valve amp first build - questions
  83. Transfrmer Impedance Question
  84. Disappointing results from RH84
  85. Anyone Loose a Counterpoint SA-5000?
  86. Installing a 610 in to a B&K 500
  87. My first tube preamp (4S)....
  88. Recycling old iron with stiff wires.
  89. 6EM7 as driver... help !!!
  90. changing R1 value in SE amp
  91. Heater CCS makes for low voltage
  92. DHT & Indirect on same line?
  93. Which tube preamplifier kit for LM3886 amplifier?
  94. budgie pre-amp
  95. ecl82 class A pp, need schematic
  96. Input low pass preferred method
  97. cary SLP50A
  98. se output options for single/balanced tda1541
  99. FM noise in Fisher 90-T in FM mode
  100. ST Triodes?
  101. TUBECAD SE.
  102. RH84 build with SS recto and voltage doubler (any input?)
  103. Tube identification
  104. Brand new cap overheating - argh
  105. High Power Valves
  106. Tubelab SSE B+ and cathode resistor questions
  107. HIFI world 6080 se
  108. EF86 triode question
  109. Connecting a Headphone Jack to a Preamp
  110. PSE 300B "French connexion"
  111. Making a custom tube characteristic graph
  112. 300B DRD power supply
  113. Insanely High Common Mode Voltage Shunt Measurement
  114. Heathkit AA-151 troubles
  115. Tube Power supply question...
  116. Noob question on power transformer primary input voltage
  117. Dynaco ST35 testing for a blown power transformer
  118. 6n6p tube buffer
  119. Welborne Labs
  120. GU-50 triode
  121. Help track down noise in gyrator
  122. Earphone Amp Improvements
  123. Protecting Wire
  124. 45 SET : tubelab vs get*set*go vs ?
  125. 6SL7 in Maggy 175 amp...
  126. Heater soft start for series-connected preamp valves
  127. low/no gain follower
  128. Data for 6BD2A or 6BD2
  129. isolation test
  130. Western Electric 437A preamp
  131. solid-state rectrification
  132. Class AB
  133. push-pull
  134. Need help ID tango-lookalike transformers
  135. TV Valves blast from the past..
  136. Tubes suggestions for parafeed headphones amp ?
  137. CCS Loadline
  138. Universal pover supply for ECC85 EL84
  139. Conversion Project
  140. Dynaco PAS I/O PCB Grounding
  141. CCS for anode load
  142. OTL Power Supply: Halfwave vs Virtual Ground
  143. Can NOS tubes have emission staining on the glass?
  144. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  145. Capacitor Drain for Tube Bench Power Supply ?
  146. Diodes, diodes, diodes...
  147. Grid leak resistors and dc-coupling
  148. Output transformer at speaker?
  149. Newbie just wondering if this PP amp looks ok
  150. 6P36S push pull HiFi amp
  151. Another Output Transformer Wiring Question
  152. Cathode bias for EL84 PPP
  153. Output Transformer Wiring Question
  154. NJ7P Tube Database
  155. solving my old radiogram sound issues - help
  156. 6H9c Idle Current.
  157. 12E1 SE amp suggestions.
  158. Direct Coupled Output Stage, DC Bias Balance
  159. Pre-amp tube suggestions for 2A3 output tube
  160. AirTight ATM-1 Schematic
  161. Counterpoint SA 5000 Service manual and PSU
  162. Rectifier tube ? - Berman 76 preamp
  163. Cathode feedback (SE amp)
  164. Will anybody interest in stamp size ccs module?
  165. Fairchild voltage questions
  166. Help with a Sylvania 7695 Project
  167. Flicker Noise dominates triode noise in audio (AES)
  168. A tube for SE with 1k-1k5 load
  169. scott stereomaster 233 restoration
  170. Homebrew Dynaco MkIII Problems - PLEASE HELP!
  171. What to do with C3g tubes
  172. Can anyone ID an output transformer's part number?
  173. Nestorovic NA-1 & Alpha-1 Schematics
  174. Data for 6BD2
  175. Ken Shindo R.I.P
  176. HiFi 6n9p EL34 B + 5z3p Class A Tube valve amplifier
  177. Seas Trym with SE KT88 amplifier?
  178. 845-Amp-IT-Coupled
  179. Data for 6RA3
  180. Miniwatt N3 not turning on!
  181. I need ideas on a can capacitor
  182. Help with tube for power supply...
  183. AVC vs TVC for 10y line preamp
  184. help needed with Lumley 120 monoblocks + Sonus Fabre speakers
  185. help on 845 amp
  186. High voltage power tube question
  187. Tribute OPT for PSE 300B
  188. Floating Paraphase.
  189. 6Q7G as driver in RH807
  190. Custom tubes4hifi m-125 monoblocks
  191. Antique Audio Preamlifier made in USA
  192. directly heated tube rectifiers
  193. Biasing a 12EA6 low voltage pentode
  194. Power supply doubt
  195. Vinyl Savor's Octal 6GL7 preamp?
  196. 837 tube
  197. Tone control bypass (Kontakt KT-7)
  198. drdwers
  199. Amplifier Sensitivity?
  200. identify nickel laminations
  201. Recapping Vintage EL84 amp
  202. opinion on dynaco mark VI
  203. How can i have 450 Volts ?
  204. Balanced Preamp
  205. ecc99-300b
  206. Question about the tube specs/testing?
  207. Transformer Winding Configuration, Hafler 2,815,402
  208. PSU with SS Choke for Loftin-White 2a3.
  209. HP 8903 Pete Millet's Software on Window 8 ?
  210. Cathode Destruction
  211. Earth SuperBass B-2000 bass head info needed
  212. More radio shack dissapointment
  213. What to do with transformer secondary when used as a choke?
  214. Slight transformer buzzing in Engineers Amp
  215. Couple Gyrator Questions
  216. Shishido/Loftin-White 2A3/45 Extasy..
  217. When is a tube not a Valve?
  218. Relay Recommendataion
  219. 6080 monotriod amplifier
  220. Tetra Sans PS Phono Stage Power Supply
  221. transformer test
  222. Could someone tell me more about the Mesa Boogie Strategy 400?
  223. New OTL headphone project with EC88 and 6080
  224. Philips Tube Code
  225. Edcor GXPP vs. CXPP
  226. Shorting or Non-Shorting Rotary Switch: Hi-Low Z tube headphone amp
  227. Marshall Guitar Conversion 12AX7 Replacement
  228. affordable potted power transformer?
  229. Am I pushing the envelope too far? Layout concerns.
  230. Pete Millet's Uniamp
  231. 6211 for???
  232. Picking an output transformer: power vs. sound quality
  233. Tube emulation with transistors
  234. Altec 1570b Tube Swap
  235. Popping stepped attenuator
  236. 6922 driver/cathodyne - direct coupled
  237. Solid state rectifier with these tubes
  238. Need advice -- Improving an old tube amp
  239. KT88 SE developed a buzz
  240. Guidance on amp design
  241. OTL3 Autograph Series
  242. DAC Tube i/v help!
  243. Need help figuring out a tube amp!
  244. Parallel 12AT7 output stage design?
  245. 6SN7 SRPP
  246. Problem Bi-Amping
  247. Amplifier recommendation
  248. DIY tube amplifier got no sound but all tubes are fired up.
  249. Circuit for Melos 333
  250. DHT Tube regulated power supply

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