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  1. Morgan Jones - Valve books
  2. Any one tried to use subminiature for input tubes?
  3. Tube data for current manufacturers?
  4. Pentode to Triode Switch
  5. fried Heatkit IP-17 power supply
  6. Suggestions for Tube Amplifier
  7. SMPS for 300B heater ?
  8. What does this mean?
  9. heater/cathode query
  10. Bottlehead S.E.X Amp
  11. Old Meets New
  12. 6336-SE modification
  13. 6as7 pre-amp questions.
  14. Help in calculating NFB loop.
  15. ECL86 - quick and dirty
  16. Help! Q? about Ohm load in '59 Bassman RI
  17. preamp tubes change
  18. Parallel PP ECL86
  19. Anyone build a Minimal Reactance PSU?
  20. Transformer hook-up question to 115V AC line
  21. Langevin Schematic Archive
  22. PPP EL84 Amp
  23. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  24. Aikido: Width control
  25. Shielded Input Wire
  26. choke
  27. Multiple Inputs in One Shielded Cable?
  28. Presence control on a SE ?
  29. Question : pentode ccs schematic ?
  30. right capacitor value?
  31. Anybody knows this tube--WE 430C
  32. Transformer substitution help
  33. CFB Issues
  34. Please Suggest: Old Tube Usages
  35. Very powerful push/pull circuit
  36. Project choice for KT88
  37. Tamura F-475 in Parafeed?
  38. Kofi Annan in: "Push and Pull with Me"
  39. Schmitt dephaser
  40. Anyone using Chelmer Valves?
  41. SET w/ 300B Ultrapath + Parafeed Typologies
  42. a question about local feedback
  43. about input transformer
  44. Power transformer selection madness
  45. EF91 Line Stage questions
  46. Sourcing parts for Dynaco PAS rebuild
  47. HH Scott 223 monoblock schematics
  48. info needed on the 7c6 tube
  49. A final question on grounding(yeah right!)
  50. Schematics and Manuals Site Found
  51. Sprague/Cap Color Codes ?
  52. saba console radio working?
  53. Feedback and mu-followers
  54. Hundreds of 6AL5s
  55. Orange/Red Spot on The Anode of Sovtek 6L6GC
  56. Best way to isolate non-isolated RCAs?
  57. Power Resistor Smoking on HF-81
  58. Audio Innovations L-2
  59. first tube project
  60. And now a question about power switch...
  61. 2E24 ultralinear
  62. tube pin numbers
  63. Will This possibly work?
  64. What is the right current for a 300B at 400V and -80V grid bias?
  65. Simple Cap-Coupled CF Advise Needed
  66. tube amp layout reality check
  67. plitron
  68. How long does a 7199 last?
  69. Modding Tube Mixer Into DAW Front End
  70. CAE Cascode Diffamp Front End
  71. recommended resistor wattage
  72. 6.3V Rectifier Tube Lit by 5V
  73. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  74. WE121A, Please critique me
  75. Grommes / Western Electric G5M Tube Mixer Mods
  76. schemes needed
  77. PP to PPP
  78. aikido voltage swing
  79. voltage drop across a CCS...
  80. bogen db20 Schematic
  81. Mullards branded as Telefunkens???
  82. Pentodes; plate resistance; damping...
  83. PP amp has become SE?
  84. anyone mod a NYAL Moscode superIt?
  85. update to phillips sepp otl?
  86. DC filament supply LC or CL
  87. No Bass Control
  88. Unison Research Simply2 or s2schematics
  89. Border Patrol Power Supply
  90. Any leads on repairing a vintage Alamo Capri tube amp? >>
  91. nanocrystalline amorphous OPT
  92. El84 Pp
  93. Preamp, Euridice?
  94. Has anyone built a PS like this?
  95. Tube sockets in Eagle?
  96. E235L tubes
  97. Grid Input Transformers
  98. Aikido Power Supply
  99. ralph power pp amp with 807 ?
  100. fender clone, 6SJ7 vs. 6SN7
  101. tube stores in moscow
  102. 211 and 845
  103. Need help with amp
  104. Altec 1570B
  105. UL to triode
  106. How can I improve this tube amp (see pics)?
  107. klimo merlin preamp sch wanted
  108. CCS question
  109. *****es brew step 2 ... or grid bias ... how to?
  110. Filaments for the Aikido
  111. RE: RC-19 or RC-30
  112. My experience building a DRD d3A/300B amp
  113. TIP50 + LM317 High Voltage Regulator
  114. Any info on old "Cosmos" amp'?
  115. What more do I need to know?
  116. EBAY Find Of The Year Club LOL
  117. Partial feedback DHP SE amp
  118. newbie question
  119. Tube 1616
  120. Class A tube integrated circuit request
  121. Global Feedback Source Point
  122. These look interesting for that SE project
  123. Phillips AG9008 amp - looking for diagram
  124. 3cx3000
  125. EL86 and speakers? 800 Ohm
  126. Looking for CAT SL-1 Schematic
  127. el84 - 807 ?
  128. Low-voltage Tubebuffer by David Lin
  129. changing diodes with 5AR4 tubes
  130. 801 amp PS
  131. what can I do with these tubes?
  132. How to 'fine tune' your amps?
  133. Otl
  134. Rogers E40a schematic?
  135. Peavey Triple X Rewire! Help!
  136. Butler Monad A 100
  137. Using the UTC LS-33 as a Push-Pull output for 2A3's
  138. 2A3 AC filament hum
  139. A question about diodes...
  140. 5R4WGY/A/B , input filter capacitors
  141. attenuator hook up?
  142. best material for mounting tubes sideways
  143. Amp suggestions needed
  144. CC vs EI … I mean toroids are out of question
  145. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  146. Inviting Comment on Schematic
  147. SE 2A3 input stage
  148. DIY Tube Amp Questions
  149. Need tube buffer circuit for sub-woofer out
  150. How to connect electrostatic shield of power transformer?
  151. Your favourite filament supply for DHT's?
  152. Quantum Impex
  153. Channel Switching Real McTube?
  154. so who owns a dac5 or m8 phono
  155. OPT at frequency extremes
  156. Parafeed with resistive load
  157. EL34 SE triode mode A class sch wanted
  158. Dumont (where theres smoke theres sound)
  159. HYBRID- Schematic
  160. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  161. sovtek 300B
  162. 12au6 preamp
  163. Engineering Drawings PCB Mount Tube Sockets
  164. Help with a choke for first-time DIY...
  165. Power SRPP
  166. Anode Loading Vs. Cathode Loading ?
  167. Purist 2 Line Amp
  168. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  169. radio receiver
  170. Help Vintage Guitar Hummer
  171. Pioneer SM83 and 500k pot
  172. How many ways to connect a pentode...
  173. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  174. Any pitfalls to tapping voltage doubler?
  175. 5k to 100 or so line transformers
  176. Ongaku 211 and Supravox 215
  177. Help with 6B4G PP amp.
  178. Help me build my Choke I/P preamp PSU
  179. Pinging "DoomPixie"
  180. 6L6 mono amp questions
  181. Help on 300B power trans...
  182. Spud Farmin' Pt. Deux
  183. No Zen
  184. Reuse or rewind choke
  185. Bell Sound Mono Integrated Amplifier
  186. Help with Melos SHA repair
  187. diy guitar tube amp help.
  188. Phase splitter transformers
  189. 6v6 schems
  190. Cathode feedback
  191. Is this a good choice for El34 PP
  192. 6DK6 amp schematics?
  193. so who here builds amps
  194. 3:1 Line Input X-former ?
  195. * 35 watt * 300B SE = super 300B + Class A2
  196. Quirk in Mullard 5-20 circuit
  197. LL1673 as anode load?
  198. preamp/power amp matching
  199. 0A3 and pentode questions (quickie)
  200. where to find transformer to use
  201. C core output design
  202. Unusual Motorola Console
  203. Improving the Aikido line stage...
  204. Poll..anyone interested in an Aikido linestage PCB group buy?
  205. New 6s45p compare to NOS?
  206. Elektra Print L-3500
  207. 300b tube cage
  208. The 'Tater Patch
  209. 2A3 Sovtek characteristics
  210. 300b filament q, yes another one.
  211. Amp repair help needed.
  212. 833a SE Peak A.F. Grid Voltage
  213. DHP driver for 845
  214. Fisher 55-a
  215. Ultralinear Miller capacitance
  216. Simplest OTL?
  217. presence control
  218. Black Gate N cathode formation voltage
  219. Any other reported fragility for 6H30pi?
  220. Help! circuit diagram
  221. Another Gm70 amp !!
  222. 833a Amp 75W SE
  223. Black Gate N-series question
  224. 300B+
  225. Koren's spice models
  226. 50 Power triode
  227. Vertical deflection tubes for audio output?
  228. warmth in different tube types
  229. OT data
  230. Sansui 1000A OPT's
  231. CF biasing and load ???s
  232. improving the Mcintosh C22
  233. An amp that melts 6L6s?
  234. 8ohm speaker on 15 or 3.5 ohm tranny
  235. Choosing a brand as a standard
  236. The power of transformation
  237. wanted- 845 pwr amp p.p.
  238. Heathkit S-33 Information needed.
  239. Leak Stereo 20 - solid state rectifier?
  240. My rebuild 6sn7gt tubes line pre-amp.
  241. CircuitMaker Vacuum Tube model
  242. Mf X-pre
  243. E182CC, E88CC SRPP at low voltage
  244. Debugging my Aikido
  245. SRPP linestage help
  246. Transformer question
  247. Tube Spice Model Problem
  248. Just found a zenith 7g01z in the basement
  249. your next level story - Philosophy of EE 101
  250. JLTI Tube Preamp