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  1. Fender Output transformer as an audio amp part
  2. Chinese Tube Amp & DIY .. Pro & Con
  3. Franks Ultimate Preamp....
  4. Interstage Transformer Nomenclature
  5. PP or SE for Horns?
  6. Output transformer in SIMetrix?
  7. seampcad
  8. Looking for an amp project
  9. Unison Research Smart 845 schematics
  10. HELP - From the audiophile Heads - Amp Advice
  11. 8233, 8116 & 6BZ6 valves - what are they good for?
  12. wires of output transformer are too thin!
  13. Reichert Feral Eye
  14. BIG LOUD SCREECH on LEFT channel only
  15. humming from volume
  16. Paia TubeHead and Symmetry Trims
  17. Output trafo for WE-91 L'Audiophile amp?
  18. Transformer voltage too high for 300B amp
  19. More shopping help please - GE Combo 330
  20. Bias filtering
  21. PP pentode screen supply
  22. 6v6 and OPT with 10-12k ohm(primary impedence)
  23. Identity Help - Is it worth working on
  24. Need info about 5G84 tube
  25. RF Noise in Power Supply
  26. My audionote Kit one have problem on 300B cathode terminal
  27. Partial Feedback Amplifiers
  28. filament transformer vs plate transformer
  29. Any subs for 6N1 & 6N2 twin triode valves?
  30. PSU questions
  31. Any designs for 6EJ7 out there?
  32. SRPP headphoneamp with E88CC
  33. newbie to DIY
  34. Just bought a leak stereo 20 (pics!)
  35. Mysterious Output Transformer....
  36. Hum free 5687 AC filament supply, is it possable ?
  37. Will This Preamp Work
  38. help with input pot on el84 PP amp
  39. NOS Philmore Output Transformern or Modern
  40. tube amp
  41. power supply, Help please!!!
  42. Tubes and magnetic fields
  43. Driver tube for 45 interstage 1:1
  44. 89 db is it enough ?
  45. Troubl-shooting heater voltage for filament
  46. arcing in rectifier tube
  47. 1/8" Aluminum for top plate?
  48. Shopping list
  49. 6sn7 valves
  50. Neon flashes with the music
  51. Help in SE 807 amp
  52. naim user defects to valves !
  53. tamura opt need help
  54. Line stage question
  55. Tube question, how to read the difference.
  56. What Tube amp for Biginner?
  57. Leak Stereo 20 rebuild/restore question
  58. Is there any advantage in using preamp tubes in output stages ??
  59. 12b4 as PP output tubes
  60. Valves stripped bare….
  61. Anybody know this TUBE?
  62. Noob Q: are the efficiency figures for valve amps the same as with transistors?
  63. Need help understanding something about UL stages
  64. I'd like to make a simple 50 amplifier
  65. gates tube pre-amp info??
  66. OT - To those who correspond with me....
  67. Could use info on Grommes + knight.
  68. Single Ended Ultra linear, anyone built one?
  69. Audio Innovations 800 Anniversary problem
  70. Transformer coupled 6SN7 push-pull DAC output stage?
  71. Vkh max voltage
  72. Mosfet differences with valves
  73. Need schematic - Audio Research LS2B MKII
  74. EL84M specs.
  75. What to do with these?
  76. Dyna Mk IV Driver Boards
  77. OTL driving series arrays
  78. Voltage problem
  79. Amp intermittently blowing fuse at power up
  80. Worlds Best Preamp
  81. Heathkit TT-1A Calibration
  82. surplus 12ax7a
  83. Phase Splitter as input stage
  84. DHT DC heater question
  85. Wanted-Assembly manual for Scott LK-150
  86. Happy new year, sophielove.
  87. Need UTC PVM-3 primary ?
  88. power amp for small studio
  89. Preamp
  90. Problems with EICO HF-12 amp.
  91. Technics SU-30A's schema???
  92. Tube PWM driver
  93. Tungsram tube data
  94. S-5 Electronics K-12M (11MS8) 8 wpc PP Tube Amp Kit ($139)
  95. sharp cutoff pentode
  96. JJ E34L failure(s)
  97. Valve effects loop
  98. Bruce Moore "Companion" - Schematic
  99. CT impedence mismatch?
  100. Tube multiplex adapter parts replacement
  101. SY gets jiggy (5692 measurements)
  102. Tube Drag Racing!
  103. OTL, quick `n dirty
  104. 6V6 stereo amp
  105. humming from amplifier
  106. Mesa boogie
  107. Any tube audiophile in New Dephli, India
  108. What are terminal 1 & 4 of 300B tube
  109. Tube Nube - need advice on Scott LK150
  110. Pentode AB1 or AB2?
  111. #56 tube line stage
  112. **** another unusual hum problem !!
  113. Any comments on Eico HF-14 and HF-85
  114. sensitivities of amplifier configurations
  115. Building a Sun Audio sv 300b Mk II clone
  116. wanted information! vellman vaa-70 tube amp
  117. old tubes, what to do?
  118. Knowledge needed. Need answer to basic yet puzzling question.
  119. tubes 5965A and 5814A
  120. 6s4a as driver for 6as7 in SEAmp
  121. Tube Manufactures Cross references
  122. KT88 vs. KT90 bench test
  123. Variable Voltage Technology(uk) iron
  124. Tutorial: building techniques
  125. Anyone tried UL or Triode connecting the $140 kit ?
  126. Using microphone transformers as phase splitters .
  127. Tube Cooling Recommendations
  128. WE 300B Vs &&&&
  129. Line stage board off from overseas. problems
  130. Volume control for tube amplifier ??
  131. Mro Pt8
  132. looking for se 811 schematics
  133. 6ar5??
  134. bias meter
  135. 829B/3E29 datasheet triodemode
  136. A better triode strap?
  137. outputtransformer data needed
  138. info wanted about a output transformer
  139. WE316a/VT191 triode
  140. electrolytic can capacitor
  141. Bogen DS-225
  142. PPP KT66, Jensen P15N, Hammond PowTran 378CX/193L Choke
  143. 6V6GT and 6L6GT
  144. Unknown vaccumtubes
  145. Milleroux OPT
  146. Tube equalents.
  147. Western Electric 300B
  148. AVVT Tubes
  149. PAS phono. (curcio)
  150. Suitable Transformer for Etude 12B4A
  151. SE tube in mono amp
  152. Pentode current sink - how to connect the control grid?
  153. where are audio equipments in Beijing?
  154. Mullard 3-3 Question
  155. Grounded Grid w/ remote volume
  156. Modifying (Reducing) Screen Voltage
  157. coupling caps
  158. Single Stage Inverting or no?
  159. Using KT88 to build a monster champ amp?
  160. bias arrangements for P-P amps.
  161. Beginner's heaphone amp?
  162. Bridging
  163. Valve circuit in I, Robot
  164. ECC33, 34, 35 tubes?
  165. Help!! any good EL3n Push Pull circuits????
  166. What PP circuit to use for 6SN7 and 2a3?
  167. Stage classification and efficiency
  168. 2x8w SET choice.
  169. 10-15 mu DHT?
  170. Possible computer speaker amp
  171. Help me make a preamp decision
  172. Plitron PAT4006 - advice please
  173. Big valve
  174. Need help with PP pentode design
  175. EQ-circuits.
  176. measuring the power choke inductance confusion
  177. Single-end... which tube?
  178. bias voltage for 6BQ5 plate
  179. Fender Twin
  180. small poweramp with 12AH7 and 6AU6WA...
  181. Layout Check
  182. auto component placer with tube PCB prints
  183. Hammond 300BX for a Dynaco modified Mullard 5-20 circuit
  184. Audio Electronics Supply AE-1 problems
  185. Cunningham CX 301A
  186. Quicksilver zener diode mod
  187. ELC7? I need help to identify this valve
  188. Spice 3f4 "Koren" models
  189. parallel or push-pull
  190. Isolation
  191. Telefunken 6SN7; Are They Imported Or Genuine TFK MFD?
  192. Magic Gu15
  193. Help identifing RCA transformer
  194. Problem with tube overheating. PLEASE HELP
  195. Battery powered phono.
  196. Ancient Valve Amp and Rola Speaker PLEASE HELP!
  197. converting Heathkit AA-191 to a guitar amp
  198. Has anyone used a triode as a shunt regulator?
  199. EL84 SE design recommendations?
  200. need a good low parts phono tube preamp schematic....
  201. Shunt Feedback - effect on input impedance
  202. searching bogen db10a schematic
  203. Swinging choke?
  204. Schematic help. (thread split)
  205. Playing with a Magic Eye.
  206. A music coming from component.
  207. DIY meeting in Belgium ?
  208. EL34 Push Pull weirdness
  209. Balancing DC-coupled differential stages
  210. Jadis JPS 2 schematic
  211. Leak Stereo20 rebuild ?
  212. Vintage amp rebuild advice
  213. simple 6v6 push-pull schematic ?
  214. valve newbie; 6H1H pre-amp.
  215. Polyprops as cathode bypass
  216. Eventual 300B advice welcome!
  217. Thinking about getting into Tubes, any kit recommendations?
  218. Another Mullard 5-20.
  219. Subbing EL86 (6CW5) for EL84
  220. Valve Warmer/Distortion PCB
  221. Having a problem with building this 6C45 PP amp.
  222. Blue glow in tube. Is the tube dead or not?
  223. Repairing VTL TL2.5
  224. Another ECL86 (integrated this time)
  225. CJ MV55 triode mode
  226. Mullard 20W Amp
  227. Pro Model Tubes,for example Avalon
  228. How to find out which is which????
  229. Matching a preamp to high output impedance source
  230. VSE PP1 driver stage
  231. Thordarson Choke type 1-8C42
  232. Ediswan ECL86 datasheet wanted.
  233. Minimal approach with hybrid rectification: Is this possible?
  234. SS vs. Tube Rectification (and chokes)?
  235. Biasing a guitar amp for distortion
  236. Help wanted on SRPP preamp
  237. New Pas Question no photos
  238. amp-schematic questions...
  239. 5902 subminiature audio pentode
  240. TPP versus PSE.
  241. my fun....
  242. Schematic for Siemens F2a tube amp
  243. Snubber
  244. Which preamp ?
  245. Distortion+low volume..
  246. JJ Tesla
  247. Dynaco Pas
  248. feedback resistor
  249. Grid stoppers?
  250. Transcendent T8 with 12 output tubes

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