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  1. PPP EL84 Amp
  2. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  3. Aikido: Width control
  4. Shielded Input Wire
  5. choke
  6. Multiple Inputs in One Shielded Cable?
  7. Presence control on a SE ?
  8. Question : pentode ccs schematic ?
  9. right capacitor value?
  10. Anybody knows this tube--WE 430C
  11. Transformer substitution help
  12. CFB Issues
  13. Please Suggest: Old Tube Usages
  14. Very powerful push/pull circuit
  15. Project choice for KT88
  16. Tamura F-475 in Parafeed?
  17. Kofi Annan in: "Push and Pull with Me"
  18. Schmitt dephaser
  19. Anyone using Chelmer Valves?
  20. SET w/ 300B Ultrapath + Parafeed Typologies
  21. a question about local feedback
  22. about input transformer
  23. Power transformer selection madness
  24. EF91 Line Stage questions
  25. Sourcing parts for Dynaco PAS rebuild
  26. HH Scott 223 monoblock schematics
  27. info needed on the 7c6 tube
  28. A final question on grounding(yeah right!)
  29. Schematics and Manuals Site Found
  30. Sprague/Cap Color Codes ?
  31. saba console radio working?
  32. Feedback and mu-followers
  33. Hundreds of 6AL5s
  34. Orange/Red Spot on The Anode of Sovtek 6L6GC
  35. Best way to isolate non-isolated RCAs?
  36. Power Resistor Smoking on HF-81
  37. Audio Innovations L-2
  38. first tube project
  39. And now a question about power switch...
  40. 2E24 ultralinear
  41. tube pin numbers
  42. Will This possibly work?
  43. What is the right current for a 300B at 400V and -80V grid bias?
  44. Simple Cap-Coupled CF Advise Needed
  45. tube amp layout reality check
  46. plitron
  47. How long does a 7199 last?
  48. Modding Tube Mixer Into DAW Front End
  49. CAE Cascode Diffamp Front End
  50. recommended resistor wattage
  51. 6.3V Rectifier Tube Lit by 5V
  52. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  53. WE121A, Please critique me
  54. Grommes / Western Electric G5M Tube Mixer Mods
  55. schemes needed
  56. PP to PPP
  57. aikido voltage swing
  58. voltage drop across a CCS...
  59. bogen db20 Schematic
  60. Mullards branded as Telefunkens???
  61. Pentodes; plate resistance; damping...
  62. PP amp has become SE?
  63. anyone mod a NYAL Moscode superIt?
  64. update to phillips sepp otl?
  65. DC filament supply LC or CL
  66. No Bass Control
  67. Unison Research Simply2 or s2schematics
  68. Border Patrol Power Supply
  69. Any leads on repairing a vintage Alamo Capri tube amp? >>
  70. nanocrystalline amorphous OPT
  71. El84 Pp
  72. Preamp, Euridice?
  73. Has anyone built a PS like this?
  74. Tube sockets in Eagle?
  75. E235L tubes
  76. Grid Input Transformers
  77. Aikido Power Supply
  78. ralph power pp amp with 807 ?
  79. fender clone, 6SJ7 vs. 6SN7
  80. tube stores in moscow
  81. 211 and 845
  82. Need help with amp
  83. Altec 1570B
  84. UL to triode
  85. How can I improve this tube amp (see pics)?
  86. klimo merlin preamp sch wanted
  87. CCS question
  88. *****es brew step 2 ... or grid bias ... how to?
  89. Filaments for the Aikido
  90. RE: RC-19 or RC-30
  91. My experience building a DRD d3A/300B amp
  92. TIP50 + LM317 High Voltage Regulator
  93. Any info on old "Cosmos" amp'?
  94. What more do I need to know?
  95. EBAY Find Of The Year Club LOL
  96. Partial feedback DHP SE amp
  97. newbie question
  98. Tube 1616
  99. Class A tube integrated circuit request
  100. Global Feedback Source Point
  101. These look interesting for that SE project
  102. Phillips AG9008 amp - looking for diagram
  103. 3cx3000
  104. EL86 and speakers? 800 Ohm
  105. Looking for CAT SL-1 Schematic
  106. el84 - 807 ?
  107. Low-voltage Tubebuffer by David Lin
  108. changing diodes with 5AR4 tubes
  109. 801 amp PS
  110. what can I do with these tubes?
  111. How to 'fine tune' your amps?
  112. Otl
  113. Rogers E40a schematic?
  114. Peavey Triple X Rewire! Help!
  115. Butler Monad A 100
  116. Using the UTC LS-33 as a Push-Pull output for 2A3's
  117. 2A3 AC filament hum
  118. A question about diodes...
  119. 5R4WGY/A/B , input filter capacitors
  120. attenuator hook up?
  121. best material for mounting tubes sideways
  122. Amp suggestions needed
  123. CC vs EI I mean toroids are out of question
  124. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  125. Inviting Comment on Schematic
  126. SE 2A3 input stage
  127. DIY Tube Amp Questions
  128. Need tube buffer circuit for sub-woofer out
  129. How to connect electrostatic shield of power transformer?
  130. Your favourite filament supply for DHT's?
  131. Quantum Impex
  132. Channel Switching Real McTube?
  133. so who owns a dac5 or m8 phono
  134. OPT at frequency extremes
  135. Parafeed with resistive load
  136. EL34 SE triode mode A class sch wanted
  137. Dumont (where theres smoke theres sound)
  138. HYBRID- Schematic
  139. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  140. sovtek 300B
  141. 12au6 preamp
  142. Engineering Drawings PCB Mount Tube Sockets
  143. Help with a choke for first-time DIY...
  144. Power SRPP
  145. Anode Loading Vs. Cathode Loading ?
  146. Purist 2 Line Amp
  147. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  148. radio receiver
  149. Help Vintage Guitar Hummer
  150. Pioneer SM83 and 500k pot
  151. How many ways to connect a pentode...
  152. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  153. Any pitfalls to tapping voltage doubler?
  154. 5k to 100 or so line transformers
  155. Ongaku 211 and Supravox 215
  156. Help with 6B4G PP amp.
  157. Help me build my Choke I/P preamp PSU
  158. Pinging "DoomPixie"
  159. 6L6 mono amp questions
  160. Help on 300B power trans...
  161. Spud Farmin' Pt. Deux
  162. No Zen
  163. Reuse or rewind choke
  164. Bell Sound Mono Integrated Amplifier
  165. Help with Melos SHA repair
  166. diy guitar tube amp help.
  167. Phase splitter transformers
  168. 6v6 schems
  169. Cathode feedback
  170. Is this a good choice for El34 PP
  171. 6DK6 amp schematics?
  172. so who here builds amps
  173. 3:1 Line Input X-former ?
  174. * 35 watt * 300B SE = super 300B + Class A2
  175. Quirk in Mullard 5-20 circuit
  176. LL1673 as anode load?
  177. preamp/power amp matching
  178. 0A3 and pentode questions (quickie)
  179. where to find transformer to use
  180. C core output design
  181. Unusual Motorola Console
  182. Improving the Aikido line stage...
  183. Poll..anyone interested in an Aikido linestage PCB group buy?
  184. New 6s45p compare to NOS?
  185. Elektra Print L-3500
  186. 300b tube cage
  187. The 'Tater Patch
  188. 2A3 Sovtek characteristics
  189. 300b filament q, yes another one.
  190. Amp repair help needed.
  191. 833a SE Peak A.F. Grid Voltage
  192. DHP driver for 845
  193. Fisher 55-a
  194. Ultralinear Miller capacitance
  195. Simplest OTL?
  196. presence control
  197. Black Gate N cathode formation voltage
  198. Any other reported fragility for 6H30pi?
  199. Help! circuit diagram
  200. Another Gm70 amp !!
  201. 833a Amp 75W SE
  202. Black Gate N-series question
  203. 300B+
  204. Koren's spice models
  205. 50 Power triode
  206. Vertical deflection tubes for audio output?
  207. warmth in different tube types
  208. OT data
  209. Sansui 1000A OPT's
  210. CF biasing and load ???s
  211. improving the Mcintosh C22
  212. An amp that melts 6L6s?
  213. 8ohm speaker on 15 or 3.5 ohm tranny
  214. Choosing a brand as a standard
  215. The power of transformation
  216. wanted- 845 pwr amp p.p.
  217. Heathkit S-33 Information needed.
  218. Leak Stereo 20 - solid state rectifier?
  219. My rebuild 6sn7gt tubes line pre-amp.
  220. CircuitMaker Vacuum Tube model
  221. Mf X-pre
  222. E182CC, E88CC SRPP at low voltage
  223. Debugging my Aikido
  224. SRPP linestage help
  225. Transformer question
  226. Tube Spice Model Problem
  227. Just found a zenith 7g01z in the basement
  228. your next level story - Philosophy of EE 101
  229. JLTI Tube Preamp
  230. squeal in amplifier
  231. ALTEC Line & Bridging Transformer Data??
  232. Tube noob needs some help on PSU
  233. Preamp PSU Design Help
  234. GZ37 Substitution?
  235. help disigning 12AY7 based mic pre
  236. I m confuse ! expert help
  237. Removing a pot.
  238. diyparadiso kits?
  239. Help with linestage power supply
  240. TX103 - RJM 6DJ8 - TX102 preamp
  241. Replace the field coil spk with Electromagnetic dynamic spk
  242. Gu50 output problems
  243. SRPP: adifferent perspective
  244. Fixed or self bias?
  245. 211 amp PSU question
  246. Help! transformer overheating!
  247. more ebay stuff
  248. 6KG6, output stage & PSpice
  249. 6C33C-B Failure Mode?
  250. manley 300b preamp schematic required

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