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  1. rca conversion
  2. heating
  3. Russian 6N8S/1578
  4. DIY tube amp squeals when turned up
  5. ECL80-Amp from Andreas Kirschner
  6. HSS preamp, anyone care to comment
  7. help me design an input stage for 6b4G PP
  8. Instrument/Microphone Tube Pre-amp
  9. first-time tube DIY project...phono preamp
  10. A question regarding schematics
  11. My first creation
  12. Your opinion on this VCCS heater supply please.
  13. Looking for ORIGINAL GE 6L6GC
  14. Need help - O/T trannies for future project
  15. ECL82 (6BM8) PP Stereo
  16. first DIY amp start up-yowza HELP!
  17. Ronette Info
  18. GE 5687 (5 stars)
  19. vox ac4
  20. Help: Toroid choke for a preamp
  21. Who makes a 1962 Bassman head chassis?
  22. does meter degrade sound ?
  23. Eye Tube (1629) controller help
  24. Scott 99B & 99C Public Auction Find
  25. tube id book
  26. radio , tv station and radar stations still use the best single end class a amplifier
  27. Stupid question?
  28. looking for ideas on a small tube amp stand?
  29. Cascode gain stage info?????
  30. hi gain preamp
  31. Tube flashing
  32. Bogen tube amp with variable Damping Factor
  33. Question re Allen Wright PP-1cs
  34. What is a good Tube tester to get?
  35. High Gain Preamp
  36. SACThailand
  37. You know you're a tube junky when...
  38. 6AU6 to do EF86 duty?
  39. 6Н28Б-В datasheet?
  40. Is single ended Class A better than push-pull?
  41. Is 845 better than 211 tube amplifier?
  42. Cool Fireworks (tubes are tough!)
  43. Big Big hum ???
  44. 5687 filament heater question
  45. Anyone know agood MOSFET drive for RCA 811A Tube?
  46. Who is into musical instrument tube amplification?
  47. buffer stage ECC88 or ECC83?
  48. EL34 Integrated
  49. Solid state HT regulator??
  50. Tubes driving dipole mids
  51. How do I turn an high current signal into a line level signal??
  52. Peer review, UL question
  53. Grundig TK60 - Where is the Line Out ?
  54. 12AX7, EL34 or 6L6 design wanted
  55. RCA to Speakers?
  56. Morgan Jones - Valve books
  57. Any one tried to use subminiature for input tubes?
  58. Tube data for current manufacturers?
  59. Pentode to Triode Switch
  60. fried Heatkit IP-17 power supply
  61. Suggestions for Tube Amplifier
  62. SMPS for 300B heater ?
  63. What does this mean?
  64. heater/cathode query
  65. Bottlehead S.E.X Amp
  66. Old Meets New
  67. 6336-SE modification
  68. 6as7 pre-amp questions.
  69. Help in calculating NFB loop.
  70. ECL86 - quick and dirty
  71. Help! Q? about Ohm load in '59 Bassman RI
  72. preamp tubes change
  73. Parallel PP ECL86
  74. Anyone build a Minimal Reactance PSU?
  75. Transformer hook-up question to 115V AC line
  76. Langevin Schematic Archive
  77. PPP EL84 Amp
  78. Interesting comparison between NOS RCA 12ax7, Chinese 12ax7a
  79. Aikido: Width control
  80. Shielded Input Wire
  81. choke
  82. Multiple Inputs in One Shielded Cable?
  83. Presence control on a SE ?
  84. Question : pentode ccs schematic ?
  85. right capacitor value?
  86. Anybody knows this tube--WE 430C
  87. Transformer substitution help
  88. CFB Issues
  89. Please Suggest: Old Tube Usages
  90. Very powerful push/pull circuit
  91. Project choice for KT88
  92. Tamura F-475 in Parafeed?
  93. Kofi Annan in: "Push and Pull with Me"
  94. Schmitt dephaser
  95. Anyone using Chelmer Valves?
  96. SET w/ 300B Ultrapath + Parafeed Typologies
  97. a question about local feedback
  98. about input transformer
  99. Power transformer selection madness
  100. EF91 Line Stage questions
  101. Sourcing parts for Dynaco PAS rebuild
  102. HH Scott 223 monoblock schematics
  103. info needed on the 7c6 tube
  104. A final question on grounding(yeah right!)
  105. Schematics and Manuals Site Found
  106. Sprague/Cap Color Codes ?
  107. saba console radio working?
  108. Feedback and mu-followers
  109. Hundreds of 6AL5s
  110. Orange/Red Spot on The Anode of Sovtek 6L6GC
  111. Best way to isolate non-isolated RCAs?
  112. Power Resistor Smoking on HF-81
  113. Audio Innovations L-2
  114. first tube project
  115. And now a question about power switch...
  116. 2E24 ultralinear
  117. tube pin numbers
  118. Will This possibly work?
  119. What is the right current for a 300B at 400V and -80V grid bias?
  120. Simple Cap-Coupled CF Advise Needed
  121. tube amp layout reality check
  122. plitron
  123. How long does a 7199 last?
  124. Modding Tube Mixer Into DAW Front End
  125. CAE Cascode Diffamp Front End
  126. recommended resistor wattage
  127. 6.3V Rectifier Tube Lit by 5V
  128. Precision Electronics Amp w/ 6GT5's, Convert to 6L6's?
  129. WE121A, Please critique me
  130. Grommes / Western Electric G5M Tube Mixer Mods
  131. schemes needed
  132. PP to PPP
  133. aikido voltage swing
  134. voltage drop across a CCS...
  135. bogen db20 Schematic
  136. Mullards branded as Telefunkens???
  137. Pentodes; plate resistance; damping...
  138. PP amp has become SE?
  139. anyone mod a NYAL Moscode superIt?
  140. update to phillips sepp otl?
  141. DC filament supply LC or CL
  142. No Bass Control
  143. Unison Research Simply2 or s2schematics
  144. Border Patrol Power Supply
  145. Any leads on repairing a vintage Alamo Capri tube amp? >>
  146. nanocrystalline amorphous OPT
  147. El84 Pp
  148. Preamp, Euridice?
  149. Has anyone built a PS like this?
  150. Tube sockets in Eagle?
  151. E235L tubes
  152. Grid Input Transformers
  153. Aikido Power Supply
  154. ralph power pp amp with 807 ?
  155. fender clone, 6SJ7 vs. 6SN7
  156. tube stores in moscow
  157. 211 and 845
  158. Need help with amp
  159. Altec 1570B
  160. UL to triode
  161. How can I improve this tube amp (see pics)?
  162. klimo merlin preamp sch wanted
  163. CCS question
  164. *****es brew step 2 ... or grid bias ... how to?
  165. Filaments for the Aikido
  166. RE: RC-19 or RC-30
  167. My experience building a DRD d3A/300B amp
  168. TIP50 + LM317 High Voltage Regulator
  169. Any info on old "Cosmos" amp'?
  170. What more do I need to know?
  171. EBAY Find Of The Year Club LOL
  172. Partial feedback DHP SE amp
  173. newbie question
  174. Tube 1616
  175. Class A tube integrated circuit request
  176. Global Feedback Source Point
  177. These look interesting for that SE project
  178. Phillips AG9008 amp - looking for diagram
  179. 3cx3000
  180. EL86 and speakers? 800 Ohm
  181. Looking for CAT SL-1 Schematic
  182. el84 - 807 ?
  183. Low-voltage Tubebuffer by David Lin
  184. changing diodes with 5AR4 tubes
  185. 801 amp PS
  186. what can I do with these tubes?
  187. How to 'fine tune' your amps?
  188. Otl
  189. Rogers E40a schematic?
  190. Peavey Triple X Rewire! Help!
  191. Butler Monad A 100
  192. Using the UTC LS-33 as a Push-Pull output for 2A3's
  193. 2A3 AC filament hum
  194. A question about diodes...
  195. 5R4WGY/A/B , input filter capacitors
  196. attenuator hook up?
  197. best material for mounting tubes sideways
  198. Amp suggestions needed
  199. CC vs EI I mean toroids are out of question
  200. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  201. Inviting Comment on Schematic
  202. SE 2A3 input stage
  203. DIY Tube Amp Questions
  204. Need tube buffer circuit for sub-woofer out
  205. How to connect electrostatic shield of power transformer?
  206. Your favourite filament supply for DHT's?
  207. Quantum Impex
  208. Channel Switching Real McTube?
  209. so who owns a dac5 or m8 phono
  210. OPT at frequency extremes
  211. Parafeed with resistive load
  212. EL34 SE triode mode A class sch wanted
  213. Dumont (where theres smoke theres sound)
  214. HYBRID- Schematic
  215. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  216. sovtek 300B
  217. 12au6 preamp
  218. Engineering Drawings PCB Mount Tube Sockets
  219. Help with a choke for first-time DIY...
  220. Power SRPP
  221. Anode Loading Vs. Cathode Loading ?
  222. Purist 2 Line Amp
  223. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  224. radio receiver
  225. Help Vintage Guitar Hummer
  226. Pioneer SM83 and 500k pot
  227. How many ways to connect a pentode...
  228. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  229. Any pitfalls to tapping voltage doubler?
  230. 5k to 100 or so line transformers
  231. Ongaku 211 and Supravox 215
  232. Help with 6B4G PP amp.
  233. Help me build my Choke I/P preamp PSU
  234. Pinging "DoomPixie"
  235. 6L6 mono amp questions
  236. Help on 300B power trans...
  237. Spud Farmin' Pt. Deux
  238. No Zen
  239. Reuse or rewind choke
  240. Bell Sound Mono Integrated Amplifier
  241. Help with Melos SHA repair
  242. diy guitar tube amp help.
  243. Phase splitter transformers
  244. 6v6 schems
  245. Cathode feedback
  246. Is this a good choice for El34 PP
  247. 6DK6 amp schematics?
  248. so who here builds amps
  249. 3:1 Line Input X-former ?
  250. * 35 watt * 300B SE = super 300B + Class A2

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