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  1. V8 amp
  2. market by Jac music
  3. 6P3C-1 SE ? .
  4. Cary slp70: Worth to upgrade?
  5. Hickok 123B tube tester
  6. Adding NFB makes headphone amp sound AWFUL!!!
  7. Filaments hard wired to B+ on EZ81 base
  8. What the bird is OS 18/600?
  9. ccs 10m90s what is wrong?
  10. Topology for balanced preamp
  11. 6v6 vs. 6l6 vs. 807 soundwise..
  12. Opinions/Advice on Triode Strap method
  13. Something like a Miniwatt N3 or APPJ PA0901A
  14. Extraordinary harmonics. Type 47 # tube amp.
  15. Made a new tube amp, 6J5 +27 +45
  16. Anyone ever play around with a GU-72?
  17. Possibility of using a UTC LMI-500 transformer...
  18. Aikido transformer
  19. Can someone explain why you need to re-adjust the balance on a tube amp every time
  20. Which factory made these tubes ?
  21. 813 and gm70
  22. 13E1 Push Pull
  23. dump find.
  24. ...6SN7GT operating points tube help.......
  25. 6L6 6SJ7 Amp please pick faults if any
  26. Updated DIY EL34B 6SJ7 SE Amp
  27. 6C18 x 6C33
  28. Vintage tube amp find
  29. any benefit to screen-grid drive a 6V6?
  30. Brown face Scott LK72
  31. Pilot 1060 integrated - make it better!
  32. Should I ground my K12G or my Bugle 2?
  33. 6c33 amp convert to 6c41
  34. STA-LEVEL thumbs problem
  35. Amp motorboating at power up
  36. Spice models for AL4 and RS242 tubes
  37. Mains Switch
  38. Suggestions for big output stage needed
  39. Very Good (or best?) 12B4 schematic?
  40. Amplifier for active bookshelf speakers
  41. Olson AM-240 schematic needed
  42. Valve amp - maintenance
  43. Your opinion about Rotel 930AX to hyrbid mod
  44. Weston Tube Tester 774-5
  45. Tube circuit sim software for free?
  46. 6v6 family tubes
  47. Troublesome bias resistor, cathodyne stage
  48. 6AQ5 excellent for line stage?
  49. Datasheet 6P42s and 6P45C
  50. Quad / Cyrus impedance matching
  51. Zobel network at primary audio trafo?
  52. ECL86 question
  53. 500c buzzing power transformer
  54. LM4702+6L6GB/807
  55. TubeAudio Mixer Blog
  56. Finally started on my 6L6 amp. Need tube suggestions.
  57. Just another Scott thread
  58. Design for overdriven output stage
  59. Seeking Articals On Audio Transformer Design & Construction.
  60. Bias el34 pp
  61. Photo Gallery.
  62. Precision S35
  63. 6L6WGB
  64. 6BQ7A Driver
  65. Advise for Simpson 340 signal generator problem
  66. Armaco TTHF or Calrad AP 15 What to do What to do?...
  67. Screen Power and Warmup
  68. Wanting copies of Prof. Alexander Bereskin's transformer winding pictures.
  69. what's the brand of this capacitor sounds great ?
  70. Edcor CXSE25-8-3.2K or Transcendar TT-017-OT?
  71. PP 2A3 Fixed Bias
  72. RL12P35 convert to el34
  73. Statistical regulator from VA 4rd edition
  74. Matching Impedances (the Math behind it) Please Advise if you have a grasp. Xfmrs etc
  75. Help 6AQ5 pushpull
  76. HV Logic Control Approach
  77. Valve heater question
  78. Phase inverter adjustment - Fisher 80AZ
  79. Repurposing a Bogen CHB-35A
  80. SMPS
  81. Interstage and bias failure
  82. Grid 2 current for GU19-1
  83. 6x5 tube
  84. IT coupled 6BG6GA
  85. Mystery noise has got me baffled
  86. Dynaco PAS: too much liposuction?
  87. LP Tape Noise
  88. YAKOV ARONOV MA-100
  89. Help for balance-tone control-mode selector bypass
  90. Opinions please: seeking a first class DIY SET amp design
  91. PSU for 6N6P
  92. HOT B+ capacitors!
  93. Analog meter monitoring HT supply
  94. Lamm LL2.1 DC Offset problem
  95. 6L6GT/6SJ7 Valve Amp DIY
  96. BHExchange for BottleHead's
  97. 6BY5GA elevated heater question
  98. Tone controls
  99. EL84 "IP" questions
  100. KIT Single ended KT88
  101. HELP needed - LEAK Varislope 2 Stereo + Stereo 20 with pictures...
  102. All tube cap tube amp?
  103. 12AX7 preamp for DAC
  104. Grid resistors -> GND
  105. OTL headphone amp distorting & clipping: weak power supply?
  106. Broken bias resistors (Yaqin MC-10L)
  107. Tube Enclosure suggestion from Europe.
  108. Benefit/SQ of tube stage at the input of ss power amp
  109. Is 6907 and QQV03-20A tubes are same?
  110. Found some chokes
  111. 6SN7 at low plate currents
  112. 12AU7, 12BH7, Darker Less Bright Option
  113. Heater current effects
  114. Not using all the sections on multi-section cap
  115. DC heater supply dies on me
  116. 1972 Leak Varislope 2 Stereo
  117. OPT secondary ground, stacked supplies
  118. OTL for HeaPhone
  119. Voltage doubler and filament supply
  120. Please suggest me a 6V6 class AB amp
  121. Need Review of wiring up of this SRPP 6AS7 tube amp
  122. Hum in a triode 1H6G...help !
  123. 40w Class A PP KT66?
  124. My new small amp EL84 SE Triode
  125. tube preamp output impedance
  126. pete millet 807 amp
  127. Lost Negative Bias-Fixed Bias
  128. Aikido ('dead quiet') output impedance
  129. Looking for lineamp buffer schematics
  130. Nagra VPA 845
  131. How to match 6C45?
  132. Yet another question about cathode bias (led+pnp)
  133. Ideal System for 1960?
  134. What replaces an IN541 diode?
  135. Bottlehead Eros or Tube4Hifi PH16
  136. Psvane 2a3 T Mk II reliable vender
  137. Odd Wima cap markings
  138. Chinese Amp kit experience
  139. Considerations about headph. OCL
  140. Trying to solve a Plate Follower Problem
  141. Nichicon Caps
  142. Footprint Noval ECC83 Altium
  143. Interference in hybrid amp
  144. wiring DHT filaments with center tapped secondaries
  145. B+ of Curcio Daniel II
  146. Stepped Attenuators Questions
  147. Noisy Ground? (Probably not a loop)
  148. New Production Telefunken
  149. Tube horizontal mounting position
  150. "Ask Jan First" parts website in Germany
  151. EZ215 Stereo 5881 Amp Project
  152. CCS help dn2540 send 340v to the chassis
  153. That's What She Said RH84 Build Log
  154. Help figuring out this output transformer.
  155. 5881 PPP Cathode Bias B+
  156. Measuring DHT filament V with minimal effect.
  157. 100hz hum with Audio Research vs-55
  158. Volume potentiometer
  159. Driver for 2A3C
  160. Regulated B+ sounds worse?
  161. Sylvania console amp rebuild...
  162. E130L Micron
  163. Question Re: Ground Loop Breakers
  164. Source for D3A/7721?
  165. ID a salvaged choke
  166. Magnetwire gauge size converted to metric
  167. ccs what is the best way
  168. parafeed test/measurement setup question.
  169. how do balance pots work?
  170. Issue with parafeed in SPICE
  171. GU-50 Dissected
  172. Need help on ground wiring for Scott 222-B
  173. Heathkit A9-C Mod
  174. Need a 240v, 5vac - 6-10A rectifier transformer
  175. Free Canadian Westinghouse Receiver #101: Super Heterodyne
  176. 6AS7 SET amp discussion from Photo Gallery
  177. DHT 100hz hum
  178. HP 8903B and Pete Millett's Software Problem ?
  179. How to identify an ARC D70 version ?
  180. Valve amp first build - questions
  181. Transfrmer Impedance Question
  182. Disappointing results from RH84
  183. Anyone Loose a Counterpoint SA-5000?
  184. Installing a 610 in to a B&K 500
  185. My first tube preamp (4S)....
  186. Recycling old iron with stiff wires.
  187. 6EM7 as driver... help !!!
  188. changing R1 value in SE amp
  189. Heater CCS makes for low voltage
  190. DHT & Indirect on same line?
  191. Which tube preamplifier kit for LM3886 amplifier?
  192. budgie pre-amp
  193. ecl82 class A pp, need schematic
  194. Input low pass preferred method
  195. cary SLP50A
  196. se output options for single/balanced tda1541
  197. FM noise in Fisher 90-T in FM mode
  198. ST Triodes?
  199. TUBECAD SE.
  200. RH84 build with SS recto and voltage doubler (any input?)
  201. Tube identification
  202. Brand new cap overheating - argh
  203. High Power Valves
  204. Tubelab SSE B+ and cathode resistor questions
  205. HIFI world 6080 se
  206. EF86 triode question
  207. Connecting a Headphone Jack to a Preamp
  208. PSE 300B "French connexion"
  209. Making a custom tube characteristic graph
  210. 300B DRD power supply
  211. Insanely High Common Mode Voltage Shunt Measurement
  212. Heathkit AA-151 troubles
  213. Tube Power supply question...
  214. Noob question on power transformer primary input voltage
  215. Dynaco ST35 testing for a blown power transformer
  216. 6n6p tube buffer
  217. Welborne Labs
  218. GU-50 triode
  219. Help track down noise in gyrator
  220. Earphone Amp Improvements
  221. Protecting Wire
  222. 45 SET : tubelab vs get*set*go vs ?
  223. 6SL7 in Maggy 175 amp...
  224. Heater soft start for series-connected preamp valves
  225. low/no gain follower
  226. Data for 6BD2A or 6BD2
  227. isolation test
  228. Western Electric 437A preamp
  229. solid-state rectrification
  230. Class AB
  231. push-pull
  232. Need help ID tango-lookalike transformers
  233. TV Valves blast from the past..
  234. Tubes suggestions for parafeed headphones amp ?
  235. CCS Loadline
  236. Universal pover supply for ECC85 EL84
  237. Conversion Project
  238. Dynaco PAS I/O PCB Grounding
  239. CCS for anode load
  240. OTL Power Supply: Halfwave vs Virtual Ground
  241. Can NOS tubes have emission staining on the glass?
  242. Pentode pre/compressor (warning nube attempt at circuit drafting) --suppressor grid
  243. Capacitor Drain for Tube Bench Power Supply ?
  244. Diodes, diodes, diodes...
  245. Grid leak resistors and dc-coupling
  246. Output transformer at speaker?
  247. Newbie just wondering if this PP amp looks ok
  248. 6P36S push pull HiFi amp
  249. Another Output Transformer Wiring Question
  250. Cathode bias for EL84 PPP

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