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  1. How do I turn an high current signal into a line level signal??
  2. Peer review, UL question
  3. Grundig TK60 - Where is the Line Out ?
  4. 12AX7, EL34 or 6L6 design wanted
  5. RCA to Speakers?
  6. Morgan Jones - Valve books
  7. Any one tried to use subminiature for input tubes?
  8. Tube data for current manufacturers?
  9. Pentode to Triode Switch
  10. fried Heatkit IP-17 power supply
  11. Suggestions for Tube Amplifier
  12. SMPS for 300B heater ?
  13. What does this mean?
  14. heater/cathode query
  15. Bottlehead S.E.X Amp
  16. Old Meets New
  17. 6336-SE modification
  18. 6as7 pre-amp questions.
  19. Help in calculating NFB loop.
  20. ECL86 - quick and dirty
  21. Help! Q? about Ohm load in '59 Bassman RI
  22. preamp tubes change
  23. Parallel PP ECL86
  24. Anyone build a Minimal Reactance PSU?
  25. Transformer hook-up question to 115V AC line
  26. Langevin Schematic Archive
  27. PPP EL84 Amp
  28. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  29. Aikido: Width control
  30. Shielded Input Wire
  31. choke
  32. Multiple Inputs in One Shielded Cable?
  33. Presence control on a SE ?
  34. Question : pentode ccs schematic ?
  35. right capacitor value?
  36. Anybody knows this tube--WE 430C
  37. Transformer substitution help
  38. CFB Issues
  39. Please Suggest: Old Tube Usages
  40. Very powerful push/pull circuit
  41. Project choice for KT88
  42. Tamura F-475 in Parafeed?
  43. Kofi Annan in: "Push and Pull with Me"
  44. Schmitt dephaser
  45. Anyone using Chelmer Valves?
  46. SET w/ 300B Ultrapath + Parafeed Typologies
  47. a question about local feedback
  48. about input transformer
  49. Power transformer selection madness
  50. EF91 Line Stage questions
  51. Sourcing parts for Dynaco PAS rebuild
  52. HH Scott 223 monoblock schematics
  53. info needed on the 7c6 tube
  54. A final question on grounding(yeah right!)
  55. Schematics and Manuals Site Found
  56. Sprague/Cap Color Codes ?
  57. saba console radio working?
  58. Feedback and mu-followers
  59. Hundreds of 6AL5s
  60. Orange/Red Spot on The Anode of Sovtek 6L6GC
  61. Best way to isolate non-isolated RCAs?
  62. Power Resistor Smoking on HF-81
  63. Audio Innovations L-2
  64. first tube project
  65. And now a question about power switch...
  66. 2E24 ultralinear
  67. tube pin numbers
  68. Will This possibly work?
  69. What is the right current for a 300B at 400V and -80V grid bias?
  70. Simple Cap-Coupled CF Advise Needed
  71. tube amp layout reality check
  72. plitron
  73. How long does a 7199 last?
  74. Modding Tube Mixer Into DAW Front End
  75. CAE Cascode Diffamp Front End
  76. recommended resistor wattage
  77. 6.3V Rectifier Tube Lit by 5V
  78. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  79. WE121A, Please critique me
  80. Grommes / Western Electric G5M Tube Mixer Mods
  81. schemes needed
  82. PP to PPP
  83. aikido voltage swing
  84. voltage drop across a CCS...
  85. bogen db20 Schematic
  86. Mullards branded as Telefunkens???
  87. Pentodes; plate resistance; damping...
  88. PP amp has become SE?
  89. anyone mod a NYAL Moscode superIt?
  90. update to phillips sepp otl?
  91. DC filament supply LC or CL
  92. No Bass Control
  93. Unison Research Simply2 or s2schematics
  94. Border Patrol Power Supply
  95. Any leads on repairing a vintage Alamo Capri tube amp? >>
  96. nanocrystalline amorphous OPT
  97. El84 Pp
  98. Preamp, Euridice?
  99. Has anyone built a PS like this?
  100. Tube sockets in Eagle?
  101. E235L tubes
  102. Grid Input Transformers
  103. Aikido Power Supply
  104. ralph power pp amp with 807 ?
  105. fender clone, 6SJ7 vs. 6SN7
  106. tube stores in moscow
  107. 211 and 845
  108. Need help with amp
  109. Altec 1570B
  110. UL to triode
  111. How can I improve this tube amp (see pics)?
  112. klimo merlin preamp sch wanted
  113. CCS question
  114. *****es brew step 2 ... or grid bias ... how to?
  115. Filaments for the Aikido
  116. RE: RC-19 or RC-30
  117. My experience building a DRD d3A/300B amp
  118. TIP50 + LM317 High Voltage Regulator
  119. Any info on old "Cosmos" amp'?
  120. What more do I need to know?
  121. EBAY Find Of The Year Club LOL
  122. Partial feedback DHP SE amp
  123. newbie question
  124. Tube 1616
  125. Class A tube integrated circuit request
  126. Global Feedback Source Point
  127. These look interesting for that SE project
  128. Phillips AG9008 amp - looking for diagram
  129. 3cx3000
  130. EL86 and speakers? 800 Ohm
  131. Looking for CAT SL-1 Schematic
  132. el84 - 807 ?
  133. Low-voltage Tubebuffer by David Lin
  134. changing diodes with 5AR4 tubes
  135. 801 amp PS
  136. what can I do with these tubes?
  137. How to 'fine tune' your amps?
  138. Otl
  139. Rogers E40a schematic?
  140. Peavey Triple X Rewire! Help!
  141. Butler Monad A 100
  142. Using the UTC LS-33 as a Push-Pull output for 2A3's
  143. 2A3 AC filament hum
  144. A question about diodes...
  145. 5R4WGY/A/B , input filter capacitors
  146. attenuator hook up?
  147. best material for mounting tubes sideways
  148. Amp suggestions needed
  149. CC vs EI I mean toroids are out of question
  150. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  151. Inviting Comment on Schematic
  152. SE 2A3 input stage
  153. DIY Tube Amp Questions
  154. Need tube buffer circuit for sub-woofer out
  155. How to connect electrostatic shield of power transformer?
  156. Your favourite filament supply for DHT's?
  157. Quantum Impex
  158. Channel Switching Real McTube?
  159. so who owns a dac5 or m8 phono
  160. OPT at frequency extremes
  161. Parafeed with resistive load
  162. EL34 SE triode mode A class sch wanted
  163. Dumont (where theres smoke theres sound)
  164. HYBRID- Schematic
  165. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  166. sovtek 300B
  167. 12au6 preamp
  168. Engineering Drawings PCB Mount Tube Sockets
  169. Help with a choke for first-time DIY...
  170. Power SRPP
  171. Anode Loading Vs. Cathode Loading ?
  172. Purist 2 Line Amp
  173. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  174. radio receiver
  175. Help Vintage Guitar Hummer
  176. Pioneer SM83 and 500k pot
  177. How many ways to connect a pentode...
  178. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  179. Any pitfalls to tapping voltage doubler?
  180. 5k to 100 or so line transformers
  181. Ongaku 211 and Supravox 215
  182. Help with 6B4G PP amp.
  183. Help me build my Choke I/P preamp PSU
  184. Pinging "DoomPixie"
  185. 6L6 mono amp questions
  186. Help on 300B power trans...
  187. Spud Farmin' Pt. Deux
  188. No Zen
  189. Reuse or rewind choke
  190. Bell Sound Mono Integrated Amplifier
  191. Help with Melos SHA repair
  192. diy guitar tube amp help.
  193. Phase splitter transformers
  194. 6v6 schems
  195. Cathode feedback
  196. Is this a good choice for El34 PP
  197. 6DK6 amp schematics?
  198. so who here builds amps
  199. 3:1 Line Input X-former ?
  200. * 35 watt * 300B SE = super 300B + Class A2
  201. Quirk in Mullard 5-20 circuit
  202. LL1673 as anode load?
  203. preamp/power amp matching
  204. 0A3 and pentode questions (quickie)
  205. where to find transformer to use
  206. C core output design
  207. Unusual Motorola Console
  208. Improving the Aikido line stage...
  209. Poll..anyone interested in an Aikido linestage PCB group buy?
  210. New 6s45p compare to NOS?
  211. Elektra Print L-3500
  212. 300b tube cage
  213. The 'Tater Patch
  214. 2A3 Sovtek characteristics
  215. 300b filament q, yes another one.
  216. Amp repair help needed.
  217. 833a SE Peak A.F. Grid Voltage
  218. DHP driver for 845
  219. Fisher 55-a
  220. Ultralinear Miller capacitance
  221. Simplest OTL?
  222. presence control
  223. Black Gate N cathode formation voltage
  224. Any other reported fragility for 6H30pi?
  225. Help! circuit diagram
  226. Another Gm70 amp !!
  227. 833a Amp 75W SE
  228. Black Gate N-series question
  229. 300B+
  230. Koren's spice models
  231. 50 Power triode
  232. Vertical deflection tubes for audio output?
  233. warmth in different tube types
  234. OT data
  235. Sansui 1000A OPT's
  236. CF biasing and load ???s
  237. improving the Mcintosh C22
  238. An amp that melts 6L6s?
  239. 8ohm speaker on 15 or 3.5 ohm tranny
  240. Choosing a brand as a standard
  241. The power of transformation
  242. wanted- 845 pwr amp p.p.
  243. Heathkit S-33 Information needed.
  244. Leak Stereo 20 - solid state rectifier?
  245. My rebuild 6sn7gt tubes line pre-amp.
  246. CircuitMaker Vacuum Tube model
  247. Mf X-pre
  248. E182CC, E88CC SRPP at low voltage
  249. Debugging my Aikido
  250. SRPP linestage help

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