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  1. Hammond vs. James?
  2. Tubes for Scott Nixon dac
  3. James SE OPT for 300B & 2A3 on eBay
  4. pre-amp with 6as7??
  5. pre-amp with voltage gain from transformer only
  6. Help! Mystery tube (?) amp (type: HK56)
  7. Regulate the high voltage making better sound? (Preamp)
  8. Power Transformer
  9. Potentiometers UK
  10. AC 120V, neutral, hot, ground
  11. Counterpoint SA-220 Tube section advice needed
  12. 807 Amp
  13. Help me to choose the adequate ferrites
  14. Looking for KT88 circuits.
  15. Building a power amp - help
  16. Sovtek EL34WXT.
  17. Microphonic
  18. preamp gain and output transformer question
  19. Would an s5 K-12M kit suffice?
  20. 6c45 and passive volume control?
  21. Something of Interest to Newbies
  22. Fender Output transformer as an audio amp part
  23. Chinese Tube Amp & DIY .. Pro & Con
  24. Franks Ultimate Preamp....
  25. Interstage Transformer Nomenclature
  26. PP or SE for Horns?
  27. Output transformer in SIMetrix?
  28. seampcad
  29. Looking for an amp project
  30. Unison Research Smart 845 schematics
  31. HELP - From the audiophile Heads - Amp Advice
  32. 8233, 8116 & 6BZ6 valves - what are they good for?
  33. wires of output transformer are too thin!
  34. Reichert Feral Eye
  35. BIG LOUD SCREECH on LEFT channel only
  36. humming from volume
  37. Paia TubeHead and Symmetry Trims
  38. Output trafo for WE-91 L'Audiophile amp?
  39. Transformer voltage too high for 300B amp
  40. More shopping help please - GE Combo 330
  41. Bias filtering
  42. PP pentode screen supply
  43. 6v6 and OPT with 10-12k ohm(primary impedence)
  44. Identity Help - Is it worth working on
  45. Need info about 5G84 tube
  46. RF Noise in Power Supply
  47. My audionote Kit one have problem on 300B cathode terminal
  48. Partial Feedback Amplifiers
  49. filament transformer vs plate transformer
  50. Any subs for 6N1 & 6N2 twin triode valves?
  51. PSU questions
  52. Any designs for 6EJ7 out there?
  53. SRPP headphoneamp with E88CC
  54. newbie to DIY
  55. Just bought a leak stereo 20 (pics!)
  56. Mysterious Output Transformer....
  57. Hum free 5687 AC filament supply, is it possable ?
  58. Will This Preamp Work
  59. help with input pot on el84 PP amp
  60. NOS Philmore Output Transformern or Modern
  61. tube amp
  62. power supply, Help please!!!
  63. Tubes and magnetic fields
  64. Driver tube for 45 interstage 1:1
  65. 89 db is it enough ?
  66. Troubl-shooting heater voltage for filament
  67. arcing in rectifier tube
  68. 1/8" Aluminum for top plate?
  69. Shopping list
  70. 6sn7 valves
  71. Neon flashes with the music
  72. Help in SE 807 amp
  73. naim user defects to valves !
  74. tamura opt need help
  75. Line stage question
  76. Tube question, how to read the difference.
  77. What Tube amp for Biginner?
  78. Leak Stereo 20 rebuild/restore question
  79. Is there any advantage in using preamp tubes in output stages ??
  80. 12b4 as PP output tubes
  81. Valves stripped bare….
  82. Anybody know this TUBE?
  83. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  84. Need help understanding something about UL stages
  85. I'd like to make a simple 50 amplifier
  86. gates tube pre-amp info??
  87. OT - To those who correspond with me....
  88. Could use info on Grommes + knight.
  89. Single Ended Ultra linear, anyone built one?
  90. Audio Innovations 800 Anniversary problem
  91. Transformer coupled 6SN7 push-pull DAC output stage?
  92. Vkh max voltage
  93. Mosfet differences with valves
  94. Need schematic - Audio Research LS2B MKII
  95. EL84M specs.
  96. What to do with these?
  97. Dyna Mk IV Driver Boards
  98. OTL driving series arrays
  99. Voltage problem
  100. Amp intermittently blowing fuse at power up
  101. Worlds Best Preamp
  102. Heathkit TT-1A Calibration
  103. surplus 12ax7a
  104. Phase Splitter as input stage
  105. DHT DC heater question
  106. Wanted-Assembly manual for Scott LK-150
  107. Happy new year, sophielove.
  108. Need UTC PVM-3 primary ?
  109. power amp for small studio
  110. Preamp
  111. Problems with EICO HF-12 amp.
  112. Technics SU-30A's schema???
  113. Tube PWM driver
  114. Tungsram tube data
  115. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  116. sharp cutoff pentode
  117. JJ E34L failure(s)
  118. Valve effects loop
  119. Bruce Moore "Companion" - Schematic
  120. CT impedence mismatch?
  121. Tube multiplex adapter parts replacement
  122. SY gets jiggy (5692 measurements)
  123. Tube Drag Racing!
  124. OTL, quick `n dirty
  125. 6V6 stereo amp
  126. humming from amplifier
  127. Mesa boogie
  128. Any tube audiophile in New Dephli, India
  129. What are terminal 1 & 4 of 300B tube
  130. Tube Nube - need advice on Scott LK150
  131. Pentode AB1 or AB2?
  132. #56 tube line stage
  133. **** another unusual hum problem !!
  134. Any comments on Eico HF-14 and HF-85
  135. sensitivities of amplifier configurations
  136. Building a Sun Audio sv 300b Mk II clone
  137. wanted information! vellman vaa-70 tube amp
  138. old tubes, what to do?
  139. Knowledge needed. Need answer to basic yet puzzling question.
  140. tubes 5965A and 5814A
  141. 6s4a as driver for 6as7 in SEAmp
  142. Tube Manufactures Cross references
  143. KT88 vs. KT90 bench test
  144. Variable Voltage Technology(uk) iron
  145. Tutorial: building techniques
  146. Anyone tried UL or Triode connecting the $140 kit ?
  147. Using microphone transformers as phase splitters .
  148. Tube Cooling Recommendations
  149. WE 300B Vs &&&&
  150. Line stage board off from overseas. problems
  151. Volume control for tube amplifier ??
  152. Mro Pt8
  153. looking for se 811 schematics
  154. 6ar5??
  155. bias meter
  156. 829B/3E29 datasheet triodemode
  157. A better triode strap?
  158. outputtransformer data needed
  159. info wanted about a output transformer
  160. WE316a/VT191 triode
  161. electrolytic can capacitor
  162. Bogen DS-225
  163. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  164. 6V6GT and 6L6GT
  165. Unknown vaccumtubes
  166. Milleroux OPT
  167. Tube equalents.
  168. Western Electric 300B
  169. AVVT Tubes
  170. PAS phono. (curcio)
  171. Suitable Transformer for Etude 12B4A
  172. SE tube in mono amp
  173. Pentode current sink - how to connect the control grid?
  174. where are audio equipments in Beijing?
  175. Mullard 3-3 Question
  176. Grounded Grid w/ remote volume
  177. Modifying (Reducing) Screen Voltage
  178. coupling caps
  179. Single Stage Inverting or no?
  180. Using KT88 to build a monster champ amp?
  181. bias arrangements for P-P amps.
  182. Beginner's heaphone amp?
  183. Bridging
  184. Valve circuit in I, Robot
  185. ECC33, 34, 35 tubes?
  186. Help!! any good EL3n Push Pull circuits????
  187. What PP circuit to use for 6SN7 and 2a3?
  188. Stage classification and efficiency
  189. 2x8w SET choice.
  190. 10-15 mu DHT?
  191. Possible computer speaker amp
  192. Help me make a preamp decision
  193. Plitron PAT4006 - advice please
  194. Big valve
  195. Need help with PP pentode design
  196. EQ-circuits.
  197. measuring the power choke inductance confusion
  198. Single-end... which tube?
  199. bias voltage for 6BQ5 plate
  200. Fender Twin
  201. small poweramp with 12AH7 and 6AU6WA...
  202. Layout Check
  203. auto component placer with tube PCB prints
  204. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  205. Audio Electronics Supply AE-1 problems
  206. Cunningham CX 301A
  207. Quicksilver zener diode mod
  208. ELC7? I need help to identify this valve
  209. Spice 3f4 "Koren" models
  210. parallel or push-pull
  211. Isolation
  212. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  213. Magic Gu15
  214. Help identifing RCA transformer
  215. Problem with tube overheating. PLEASE HELP
  216. Battery powered phono.
  217. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  218. converting Heathkit AA-191 to a guitar amp
  219. Has anyone used a triode as a shunt regulator?
  220. EL84 SE design recommendations?
  221. need a good low parts phono tube preamp schematic....
  222. Shunt Feedback - effect on input impedance
  223. searching bogen db10a schematic
  224. Swinging choke?
  225. Schematic help. (thread split)
  226. Playing with a Magic Eye.
  227. A music coming from component.
  228. DIY meeting in Belgium ?
  229. EL34 Push Pull weirdness
  230. Balancing DC-coupled differential stages
  231. Jadis JPS 2 schematic
  232. Leak Stereo20 rebuild ?
  233. Vintage amp rebuild advice
  234. simple 6v6 push-pull schematic ?
  235. valve newbie; 6H1H pre-amp.
  236. Polyprops as cathode bypass
  237. Eventual 300B advice welcome!
  238. Thinking about getting into Tubes, any kit recommendations?
  239. Another Mullard 5-20.
  240. Subbing EL86 (6CW5) for EL84
  241. Valve Warmer/Distortion PCB
  242. Having a problem with building this 6C45 PP amp.
  243. Blue glow in tube. Is the tube dead or not?
  244. Repairing VTL TL2.5
  245. Another ECL86 (integrated this time)
  246. CJ MV55 triode mode
  247. Mullard 20W Amp
  248. Pro Model Tubes,for example Avalon
  249. How to find out which is which????
  250. Matching a preamp to high output impedance source

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