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  1. Transformer hook-up question to 115V AC line
  2. Langevin Schematic Archive
  3. PPP EL84 Amp
  4. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  5. Aikido: Width control
  6. Shielded Input Wire
  7. choke
  8. Multiple Inputs in One Shielded Cable?
  9. Presence control on a SE ?
  10. Question : pentode ccs schematic ?
  11. right capacitor value?
  12. Anybody knows this tube--WE 430C
  13. Transformer substitution help
  14. CFB Issues
  15. Please Suggest: Old Tube Usages
  16. Very powerful push/pull circuit
  17. Project choice for KT88
  18. Tamura F-475 in Parafeed?
  19. Kofi Annan in: "Push and Pull with Me"
  20. Schmitt dephaser
  21. Anyone using Chelmer Valves?
  22. SET w/ 300B Ultrapath + Parafeed Typologies
  23. a question about local feedback
  24. about input transformer
  25. Power transformer selection madness
  26. EF91 Line Stage questions
  27. Sourcing parts for Dynaco PAS rebuild
  28. HH Scott 223 monoblock schematics
  29. info needed on the 7c6 tube
  30. A final question on grounding(yeah right!)
  31. Schematics and Manuals Site Found
  32. Sprague/Cap Color Codes ?
  33. saba console radio working?
  34. Feedback and mu-followers
  35. Hundreds of 6AL5s
  36. Orange/Red Spot on The Anode of Sovtek 6L6GC
  37. Best way to isolate non-isolated RCAs?
  38. Power Resistor Smoking on HF-81
  39. Audio Innovations L-2
  40. first tube project
  41. And now a question about power switch...
  42. 2E24 ultralinear
  43. tube pin numbers
  44. Will This possibly work?
  45. What is the right current for a 300B at 400V and -80V grid bias?
  46. Simple Cap-Coupled CF Advise Needed
  47. tube amp layout reality check
  48. plitron
  49. How long does a 7199 last?
  50. Modding Tube Mixer Into DAW Front End
  51. CAE Cascode Diffamp Front End
  52. recommended resistor wattage
  53. 6.3V Rectifier Tube Lit by 5V
  54. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  55. WE121A, Please critique me
  56. Grommes / Western Electric G5M Tube Mixer Mods
  57. schemes needed
  58. PP to PPP
  59. aikido voltage swing
  60. voltage drop across a CCS...
  61. bogen db20 Schematic
  62. Mullards branded as Telefunkens???
  63. Pentodes; plate resistance; damping...
  64. PP amp has become SE?
  65. anyone mod a NYAL Moscode superIt?
  66. update to phillips sepp otl?
  67. DC filament supply LC or CL
  68. No Bass Control
  69. Unison Research Simply2 or s2schematics
  70. Border Patrol Power Supply
  71. Any leads on repairing a vintage Alamo Capri tube amp? >>
  72. nanocrystalline amorphous OPT
  73. El84 Pp
  74. Preamp, Euridice?
  75. Has anyone built a PS like this?
  76. Tube sockets in Eagle?
  77. E235L tubes
  78. Grid Input Transformers
  79. Aikido Power Supply
  80. ralph power pp amp with 807 ?
  81. fender clone, 6SJ7 vs. 6SN7
  82. tube stores in moscow
  83. 211 and 845
  84. Need help with amp
  85. Altec 1570B
  86. UL to triode
  87. How can I improve this tube amp (see pics)?
  88. klimo merlin preamp sch wanted
  89. CCS question
  90. *****es brew step 2 ... or grid bias ... how to?
  91. Filaments for the Aikido
  92. RE: RC-19 or RC-30
  93. My experience building a DRD d3A/300B amp
  94. TIP50 + LM317 High Voltage Regulator
  95. Any info on old "Cosmos" amp'?
  96. What more do I need to know?
  97. EBAY Find Of The Year Club LOL
  98. Partial feedback DHP SE amp
  99. newbie question
  100. Tube 1616
  101. Class A tube integrated circuit request
  102. Global Feedback Source Point
  103. These look interesting for that SE project
  104. Phillips AG9008 amp - looking for diagram
  105. 3cx3000
  106. EL86 and speakers? 800 Ohm
  107. Looking for CAT SL-1 Schematic
  108. el84 - 807 ?
  109. Low-voltage Tubebuffer by David Lin
  110. changing diodes with 5AR4 tubes
  111. 801 amp PS
  112. what can I do with these tubes?
  113. How to 'fine tune' your amps?
  114. Otl
  115. Rogers E40a schematic?
  116. Peavey Triple X Rewire! Help!
  117. Butler Monad A 100
  118. Using the UTC LS-33 as a Push-Pull output for 2A3's
  119. 2A3 AC filament hum
  120. A question about diodes...
  121. 5R4WGY/A/B , input filter capacitors
  122. attenuator hook up?
  123. best material for mounting tubes sideways
  124. Amp suggestions needed
  125. CC vs EI I mean toroids are out of question
  126. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  127. Inviting Comment on Schematic
  128. SE 2A3 input stage
  129. DIY Tube Amp Questions
  130. Need tube buffer circuit for sub-woofer out
  131. How to connect electrostatic shield of power transformer?
  132. Your favourite filament supply for DHT's?
  133. Quantum Impex
  134. Channel Switching Real McTube?
  135. so who owns a dac5 or m8 phono
  136. OPT at frequency extremes
  137. Parafeed with resistive load
  138. EL34 SE triode mode A class sch wanted
  139. Dumont (where theres smoke theres sound)
  140. HYBRID- Schematic
  141. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  142. sovtek 300B
  143. 12au6 preamp
  144. Engineering Drawings PCB Mount Tube Sockets
  145. Help with a choke for first-time DIY...
  146. Power SRPP
  147. Anode Loading Vs. Cathode Loading ?
  148. Purist 2 Line Amp
  149. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  150. radio receiver
  151. Help Vintage Guitar Hummer
  152. Pioneer SM83 and 500k pot
  153. How many ways to connect a pentode...
  154. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  155. Any pitfalls to tapping voltage doubler?
  156. 5k to 100 or so line transformers
  157. Ongaku 211 and Supravox 215
  158. Help with 6B4G PP amp.
  159. Help me build my Choke I/P preamp PSU
  160. Pinging "DoomPixie"
  161. 6L6 mono amp questions
  162. Help on 300B power trans...
  163. Spud Farmin' Pt. Deux
  164. No Zen
  165. Reuse or rewind choke
  166. Bell Sound Mono Integrated Amplifier
  167. Help with Melos SHA repair
  168. diy guitar tube amp help.
  169. Phase splitter transformers
  170. 6v6 schems
  171. Cathode feedback
  172. Is this a good choice for El34 PP
  173. 6DK6 amp schematics?
  174. so who here builds amps
  175. 3:1 Line Input X-former ?
  176. * 35 watt * 300B SE = super 300B + Class A2
  177. Quirk in Mullard 5-20 circuit
  178. LL1673 as anode load?
  179. preamp/power amp matching
  180. 0A3 and pentode questions (quickie)
  181. where to find transformer to use
  182. C core output design
  183. Unusual Motorola Console
  184. Improving the Aikido line stage...
  185. Poll..anyone interested in an Aikido linestage PCB group buy?
  186. New 6s45p compare to NOS?
  187. Elektra Print L-3500
  188. 300b tube cage
  189. The 'Tater Patch
  190. 2A3 Sovtek characteristics
  191. 300b filament q, yes another one.
  192. Amp repair help needed.
  193. 833a SE Peak A.F. Grid Voltage
  194. DHP driver for 845
  195. Fisher 55-a
  196. Ultralinear Miller capacitance
  197. Simplest OTL?
  198. presence control
  199. Black Gate N cathode formation voltage
  200. Any other reported fragility for 6H30pi?
  201. Help! circuit diagram
  202. Another Gm70 amp !!
  203. 833a Amp 75W SE
  204. Black Gate N-series question
  205. 300B+
  206. Koren's spice models
  207. 50 Power triode
  208. Vertical deflection tubes for audio output?
  209. warmth in different tube types
  210. OT data
  211. Sansui 1000A OPT's
  212. CF biasing and load ???s
  213. improving the Mcintosh C22
  214. An amp that melts 6L6s?
  215. 8ohm speaker on 15 or 3.5 ohm tranny
  216. Choosing a brand as a standard
  217. The power of transformation
  218. wanted- 845 pwr amp p.p.
  219. Heathkit S-33 Information needed.
  220. Leak Stereo 20 - solid state rectifier?
  221. My rebuild 6sn7gt tubes line pre-amp.
  222. CircuitMaker Vacuum Tube model
  223. Mf X-pre
  224. E182CC, E88CC SRPP at low voltage
  225. Debugging my Aikido
  226. SRPP linestage help
  227. Transformer question
  228. Tube Spice Model Problem
  229. Just found a zenith 7g01z in the basement
  230. your next level story - Philosophy of EE 101
  231. JLTI Tube Preamp
  232. squeal in amplifier
  233. ALTEC Line & Bridging Transformer Data??
  234. Tube noob needs some help on PSU
  235. Preamp PSU Design Help
  236. GZ37 Substitution?
  237. help disigning 12AY7 based mic pre
  238. I m confuse ! expert help
  239. Removing a pot.
  240. diyparadiso kits?
  241. Help with linestage power supply
  242. TX103 - RJM 6DJ8 - TX102 preamp
  243. Replace the field coil spk with Electromagnetic dynamic spk
  244. Gu50 output problems
  245. SRPP: adifferent perspective
  246. Fixed or self bias?
  247. 211 amp PSU question
  248. Help! transformer overheating!
  249. more ebay stuff
  250. 6KG6, output stage & PSpice

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