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  1. Any one tried to use subminiature for input tubes?
  2. Tube data for current manufacturers?
  3. Pentode to Triode Switch
  4. fried Heatkit IP-17 power supply
  5. Suggestions for Tube Amplifier
  6. SMPS for 300B heater ?
  7. What does this mean?
  8. heater/cathode query
  9. Bottlehead S.E.X Amp
  10. Old Meets New
  11. 6336-SE modification
  12. 6as7 pre-amp questions.
  13. Help in calculating NFB loop.
  14. ECL86 - quick and dirty
  15. preamp tubes change
  16. Parallel PP ECL86
  17. Anyone build a Minimal Reactance PSU?
  18. Transformer hook-up question to 115V AC line
  19. Langevin Schematic Archive
  20. PPP EL84 Amp
  21. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  22. Aikido: Width control
  23. Shielded Input Wire
  24. choke
  25. Multiple Inputs in One Shielded Cable?
  26. Presence control on a SE ?
  27. Question : pentode ccs schematic ?
  28. right capacitor value?
  29. Anybody knows this tube--WE 430C
  30. Transformer substitution help
  31. CFB Issues
  32. Please Suggest: Old Tube Usages
  33. Very powerful push/pull circuit
  34. Project choice for KT88
  35. Tamura F-475 in Parafeed?
  36. Kofi Annan in: "Push and Pull with Me"
  37. Schmitt dephaser
  38. Anyone using Chelmer Valves?
  39. SET w/ 300B Ultrapath + Parafeed Typologies
  40. a question about local feedback
  41. about input transformer
  42. Power transformer selection madness
  43. EF91 Line Stage questions
  44. Sourcing parts for Dynaco PAS rebuild
  45. HH Scott 223 monoblock schematics
  46. info needed on the 7c6 tube
  47. A final question on grounding(yeah right!)
  48. Schematics and Manuals Site Found
  49. Sprague/Cap Color Codes ?
  50. saba console radio working?
  51. Feedback and mu-followers
  52. Hundreds of 6AL5s
  53. Orange/Red Spot on The Anode of Sovtek 6L6GC
  54. Best way to isolate non-isolated RCAs?
  55. Power Resistor Smoking on HF-81
  56. Audio Innovations L-2
  57. first tube project
  58. And now a question about power switch...
  59. 2E24 ultralinear
  60. tube pin numbers
  61. Will This possibly work?
  62. What is the right current for a 300B at 400V and -80V grid bias?
  63. Simple Cap-Coupled CF Advise Needed
  64. tube amp layout reality check
  65. plitron
  66. How long does a 7199 last?
  67. CAE Cascode Diffamp Front End
  68. 6.3V Rectifier Tube Lit by 5V
  69. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  70. WE121A, Please critique me
  71. Grommes / Western Electric G5M Tube Mixer Mods
  72. schemes needed
  73. PP to PPP
  74. aikido voltage swing
  75. voltage drop across a CCS...
  76. bogen db20 Schematic
  77. Mullards branded as Telefunkens???
  78. Pentodes; plate resistance; damping...
  79. PP amp has become SE?
  80. anyone mod a NYAL Moscode superIt?
  81. update to phillips sepp otl?
  82. DC filament supply LC or CL
  83. No Bass Control
  84. Unison Research Simply2 or s2schematics
  85. Border Patrol Power Supply
  86. Any leads on repairing a vintage Alamo Capri tube amp? >>
  87. nanocrystalline amorphous OPT
  88. El84 Pp
  89. Preamp, Euridice?
  90. Has anyone built a PS like this?
  91. Tube sockets in Eagle?
  92. E235L tubes
  93. Grid Input Transformers
  94. Aikido Power Supply
  95. ralph power pp amp with 807 ?
  96. tube stores in moscow
  97. 211 and 845
  98. Need help with amp
  99. Altec 1570B
  100. UL to triode
  101. How can I improve this tube amp (see pics)?
  102. klimo merlin preamp sch wanted
  103. CCS question
  104. *****es brew step 2 ... or grid bias ... how to?
  105. Filaments for the Aikido
  106. RE: RC-19 or RC-30
  107. My experience building a DRD d3A/300B amp
  108. TIP50 + LM317 High Voltage Regulator
  109. Any info on old "Cosmos" amp'?
  110. What more do I need to know?
  111. EBAY Find Of The Year Club LOL
  112. Partial feedback DHP SE amp
  113. newbie question
  114. Tube 1616
  115. Class A tube integrated circuit request
  116. Global Feedback Source Point
  117. These look interesting for that SE project
  118. Phillips AG9008 amp - looking for diagram
  119. 3cx3000
  120. EL86 and speakers? 800 Ohm
  121. Looking for CAT SL-1 Schematic
  122. el84 - 807 ?
  123. Low-voltage Tubebuffer by David Lin
  124. changing diodes with 5AR4 tubes
  125. 801 amp PS
  126. what can I do with these tubes?
  127. How to 'fine tune' your amps?
  128. Otl
  129. Rogers E40a schematic?
  130. Butler Monad A 100
  131. Using the UTC LS-33 as a Push-Pull output for 2A3's
  132. 2A3 AC filament hum
  133. A question about diodes...
  134. 5R4WGY/A/B , input filter capacitors
  135. attenuator hook up?
  136. best material for mounting tubes sideways
  137. Amp suggestions needed
  138. CC vs EI I mean toroids are out of question
  139. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  140. Inviting Comment on Schematic
  141. SE 2A3 input stage
  142. DIY Tube Amp Questions
  143. Need tube buffer circuit for sub-woofer out
  144. How to connect electrostatic shield of power transformer?
  145. Your favourite filament supply for DHT's?
  146. Quantum Impex
  147. Channel Switching Real McTube?
  148. so who owns a dac5 or m8 phono
  149. OPT at frequency extremes
  150. Parafeed with resistive load
  151. EL34 SE triode mode A class sch wanted
  152. Dumont (where theres smoke theres sound)
  153. HYBRID- Schematic
  154. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  155. sovtek 300B
  156. 12au6 preamp
  157. Engineering Drawings PCB Mount Tube Sockets
  158. Help with a choke for first-time DIY...
  159. Power SRPP
  160. Anode Loading Vs. Cathode Loading ?
  161. Purist 2 Line Amp
  162. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  163. radio receiver
  164. Pioneer SM83 and 500k pot
  165. How many ways to connect a pentode...
  166. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  167. Any pitfalls to tapping voltage doubler?
  168. 5k to 100 or so line transformers
  169. Ongaku 211 and Supravox 215
  170. Help with 6B4G PP amp.
  171. Help me build my Choke I/P preamp PSU
  172. Pinging "DoomPixie"
  173. 6L6 mono amp questions
  174. Help on 300B power trans...
  175. Spud Farmin' Pt. Deux
  176. No Zen
  177. Reuse or rewind choke
  178. Bell Sound Mono Integrated Amplifier
  179. Help with Melos SHA repair
  180. Phase splitter transformers
  181. 6v6 schems
  182. Cathode feedback
  183. Is this a good choice for El34 PP
  184. 6DK6 amp schematics?
  185. so who here builds amps
  186. 3:1 Line Input X-former ?
  187. * 35 watt * 300B SE = super 300B + Class A2
  188. Quirk in Mullard 5-20 circuit
  189. LL1673 as anode load?
  190. preamp/power amp matching
  191. 0A3 and pentode questions (quickie)
  192. where to find transformer to use
  193. C core output design
  194. Unusual Motorola Console
  195. Improving the Aikido line stage...
  196. Poll..anyone interested in an Aikido linestage PCB group buy?
  197. New 6s45p compare to NOS?
  198. Elektra Print L-3500
  199. 300b tube cage
  200. The 'Tater Patch
  201. 2A3 Sovtek characteristics
  202. 300b filament q, yes another one.
  203. Amp repair help needed.
  204. 833a SE Peak A.F. Grid Voltage
  205. DHP driver for 845
  206. Fisher 55-a
  207. Ultralinear Miller capacitance
  208. Simplest OTL?
  209. presence control
  210. Black Gate N cathode formation voltage
  211. Any other reported fragility for 6H30pi?
  212. Help! circuit diagram
  213. Another Gm70 amp !!
  214. 833a Amp 75W SE
  215. Black Gate N-series question
  216. 300B+
  217. Koren's spice models
  218. 50 Power triode
  219. Vertical deflection tubes for audio output?
  220. warmth in different tube types
  221. OT data
  222. Sansui 1000A OPT's
  223. CF biasing and load ???s
  224. improving the Mcintosh C22
  225. An amp that melts 6L6s?
  226. 8ohm speaker on 15 or 3.5 ohm tranny
  227. Choosing a brand as a standard
  228. The power of transformation
  229. wanted- 845 pwr amp p.p.
  230. Heathkit S-33 Information needed.
  231. Leak Stereo 20 - solid state rectifier?
  232. My rebuild 6sn7gt tubes line pre-amp.
  233. CircuitMaker Vacuum Tube model
  234. Mf X-pre
  235. E182CC, E88CC SRPP at low voltage
  236. Debugging my Aikido
  237. SRPP linestage help
  238. Transformer question
  239. Tube Spice Model Problem
  240. Just found a zenith 7g01z in the basement
  241. your next level story - Philosophy of EE 101
  242. JLTI Tube Preamp
  243. squeal in amplifier
  244. ALTEC Line & Bridging Transformer Data??
  245. Tube noob needs some help on PSU
  246. Preamp PSU Design Help
  247. GZ37 Substitution?
  248. help disigning 12AY7 based mic pre
  249. I m confuse ! expert help
  250. Removing a pot.

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