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  1. Peer review, UL question
  2. Grundig TK60 - Where is the Line Out ?
  3. 12AX7, EL34 or 6L6 design wanted
  4. RCA to Speakers?
  5. Morgan Jones - Valve books
  6. Any one tried to use subminiature for input tubes?
  7. Tube data for current manufacturers?
  8. Pentode to Triode Switch
  9. fried Heatkit IP-17 power supply
  10. Suggestions for Tube Amplifier
  11. SMPS for 300B heater ?
  12. What does this mean?
  13. heater/cathode query
  14. Bottlehead S.E.X Amp
  15. Old Meets New
  16. 6336-SE modification
  17. 6as7 pre-amp questions.
  18. Help in calculating NFB loop.
  19. ECL86 - quick and dirty
  20. preamp tubes change
  21. Parallel PP ECL86
  22. Anyone build a Minimal Reactance PSU?
  23. Transformer hook-up question to 115V AC line
  24. Langevin Schematic Archive
  25. PPP EL84 Amp
  26. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  27. Aikido: Width control
  28. Shielded Input Wire
  29. choke
  30. Multiple Inputs in One Shielded Cable?
  31. Presence control on a SE ?
  32. Question : pentode ccs schematic ?
  33. right capacitor value?
  34. Anybody knows this tube--WE 430C
  35. Transformer substitution help
  36. CFB Issues
  37. Please Suggest: Old Tube Usages
  38. Very powerful push/pull circuit
  39. Project choice for KT88
  40. Tamura F-475 in Parafeed?
  41. Kofi Annan in: "Push and Pull with Me"
  42. Schmitt dephaser
  43. Anyone using Chelmer Valves?
  44. SET w/ 300B Ultrapath + Parafeed Typologies
  45. a question about local feedback
  46. about input transformer
  47. Power transformer selection madness
  48. EF91 Line Stage questions
  49. Sourcing parts for Dynaco PAS rebuild
  50. HH Scott 223 monoblock schematics
  51. info needed on the 7c6 tube
  52. A final question on grounding(yeah right!)
  53. Schematics and Manuals Site Found
  54. Sprague/Cap Color Codes ?
  55. saba console radio working?
  56. Feedback and mu-followers
  57. Hundreds of 6AL5s
  58. Orange/Red Spot on The Anode of Sovtek 6L6GC
  59. Best way to isolate non-isolated RCAs?
  60. Power Resistor Smoking on HF-81
  61. Audio Innovations L-2
  62. first tube project
  63. And now a question about power switch...
  64. 2E24 ultralinear
  65. tube pin numbers
  66. Will This possibly work?
  67. What is the right current for a 300B at 400V and -80V grid bias?
  68. Simple Cap-Coupled CF Advise Needed
  69. tube amp layout reality check
  70. plitron
  71. How long does a 7199 last?
  72. Modding Tube Mixer Into DAW Front End
  73. CAE Cascode Diffamp Front End
  74. recommended resistor wattage
  75. 6.3V Rectifier Tube Lit by 5V
  76. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  77. WE121A, Please critique me
  78. Grommes / Western Electric G5M Tube Mixer Mods
  79. schemes needed
  80. PP to PPP
  81. aikido voltage swing
  82. voltage drop across a CCS...
  83. bogen db20 Schematic
  84. Mullards branded as Telefunkens???
  85. Pentodes; plate resistance; damping...
  86. PP amp has become SE?
  87. anyone mod a NYAL Moscode superIt?
  88. update to phillips sepp otl?
  89. DC filament supply LC or CL
  90. No Bass Control
  91. Unison Research Simply2 or s2schematics
  92. Border Patrol Power Supply
  93. Any leads on repairing a vintage Alamo Capri tube amp? >>
  94. nanocrystalline amorphous OPT
  95. El84 Pp
  96. Preamp, Euridice?
  97. Has anyone built a PS like this?
  98. Tube sockets in Eagle?
  99. E235L tubes
  100. Grid Input Transformers
  101. Aikido Power Supply
  102. ralph power pp amp with 807 ?
  103. tube stores in moscow
  104. 211 and 845
  105. Need help with amp
  106. Altec 1570B
  107. UL to triode
  108. How can I improve this tube amp (see pics)?
  109. klimo merlin preamp sch wanted
  110. CCS question
  111. *****es brew step 2 ... or grid bias ... how to?
  112. Filaments for the Aikido
  113. RE: RC-19 or RC-30
  114. My experience building a DRD d3A/300B amp
  115. TIP50 + LM317 High Voltage Regulator
  116. Any info on old "Cosmos" amp'?
  117. What more do I need to know?
  118. EBAY Find Of The Year Club LOL
  119. Partial feedback DHP SE amp
  120. newbie question
  121. Tube 1616
  122. Class A tube integrated circuit request
  123. Global Feedback Source Point
  124. These look interesting for that SE project
  125. Phillips AG9008 amp - looking for diagram
  126. 3cx3000
  127. EL86 and speakers? 800 Ohm
  128. Looking for CAT SL-1 Schematic
  129. el84 - 807 ?
  130. Low-voltage Tubebuffer by David Lin
  131. changing diodes with 5AR4 tubes
  132. 801 amp PS
  133. what can I do with these tubes?
  134. How to 'fine tune' your amps?
  135. Otl
  136. Rogers E40a schematic?
  137. Butler Monad A 100
  138. Using the UTC LS-33 as a Push-Pull output for 2A3's
  139. 2A3 AC filament hum
  140. A question about diodes...
  141. 5R4WGY/A/B , input filter capacitors
  142. attenuator hook up?
  143. best material for mounting tubes sideways
  144. Amp suggestions needed
  145. CC vs EI I mean toroids are out of question
  146. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  147. Inviting Comment on Schematic
  148. SE 2A3 input stage
  149. DIY Tube Amp Questions
  150. Need tube buffer circuit for sub-woofer out
  151. How to connect electrostatic shield of power transformer?
  152. Your favourite filament supply for DHT's?
  153. Quantum Impex
  154. Channel Switching Real McTube?
  155. so who owns a dac5 or m8 phono
  156. OPT at frequency extremes
  157. Parafeed with resistive load
  158. EL34 SE triode mode A class sch wanted
  159. Dumont (where theres smoke theres sound)
  160. HYBRID- Schematic
  161. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  162. sovtek 300B
  163. 12au6 preamp
  164. Engineering Drawings PCB Mount Tube Sockets
  165. Help with a choke for first-time DIY...
  166. Power SRPP
  167. Anode Loading Vs. Cathode Loading ?
  168. Purist 2 Line Amp
  169. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  170. radio receiver
  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. Phase splitter transformers
  188. 6v6 schems
  189. Cathode feedback
  190. Is this a good choice for El34 PP
  191. 6DK6 amp schematics?
  192. so who here builds amps
  193. 3:1 Line Input X-former ?
  194. * 35 watt * 300B SE = super 300B + Class A2
  195. Quirk in Mullard 5-20 circuit
  196. LL1673 as anode load?
  197. preamp/power amp matching
  198. 0A3 and pentode questions (quickie)
  199. where to find transformer to use
  200. C core output design
  201. Unusual Motorola Console
  202. Improving the Aikido line stage...
  203. Poll..anyone interested in an Aikido linestage PCB group buy?
  204. New 6s45p compare to NOS?
  205. Elektra Print L-3500
  206. 300b tube cage
  207. The 'Tater Patch
  208. 2A3 Sovtek characteristics
  209. 300b filament q, yes another one.
  210. Amp repair help needed.
  211. 833a SE Peak A.F. Grid Voltage
  212. DHP driver for 845
  213. Fisher 55-a
  214. Ultralinear Miller capacitance
  215. Simplest OTL?
  216. presence control
  217. Black Gate N cathode formation voltage
  218. Any other reported fragility for 6H30pi?
  219. Help! circuit diagram
  220. Another Gm70 amp !!
  221. 833a Amp 75W SE
  222. Black Gate N-series question
  223. 300B+
  224. Koren's spice models
  225. 50 Power triode
  226. Vertical deflection tubes for audio output?
  227. warmth in different tube types
  228. OT data
  229. Sansui 1000A OPT's
  230. CF biasing and load ???s
  231. improving the Mcintosh C22
  232. An amp that melts 6L6s?
  233. 8ohm speaker on 15 or 3.5 ohm tranny
  234. Choosing a brand as a standard
  235. The power of transformation
  236. wanted- 845 pwr amp p.p.
  237. Heathkit S-33 Information needed.
  238. Leak Stereo 20 - solid state rectifier?
  239. My rebuild 6sn7gt tubes line pre-amp.
  240. CircuitMaker Vacuum Tube model
  241. Mf X-pre
  242. E182CC, E88CC SRPP at low voltage
  243. Debugging my Aikido
  244. SRPP linestage help
  245. Transformer question
  246. Tube Spice Model Problem
  247. Just found a zenith 7g01z in the basement
  248. your next level story - Philosophy of EE 101
  249. JLTI Tube Preamp
  250. squeal in amplifier

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