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  1. Behringer reaches a new high in tube "transparency"
  2. Input stage tube
  3. Using transformers as choke?
  4. Resistors
  5. melos gk1 preamps anybody?
  6. Looking for a thread...
  7. DG7-32 based oscillograph schematic needed
  8. Try!!! Ef37a + 6c33c
  9. qustion on tube grade wiring
  10. Balanced pre-amp attempt
  11. GRRR.. sanity check on PTx current please
  12. How do you measure ripple on the B+?
  13. Aikido + EL34 Integrated
  14. heater voltage: why ac, and not dc?
  15. Ideas for using one ECL82 in a preamp
  16. Question about 12AU7
  17. 6AU6, 6U8, 6CL6, plus UTC A-10 make Mic Pre?
  18. WIMA FKP1 1000V as coupling cap ??
  19. Ping amperex re: Hammond organs
  20. schematic needen variable power supply
  21. Distributed Load/Balanced Bridge Connection
  22. CCS, feedback and grid leak questions.
  23. Vdd
  24. Help with 6GW8/ECL86 tubes??
  25. Best amplifier (recomendations) for Fostex FE108ez?
  26. Quick valve construction question
  27. Poindexter's 6v6 PP amp
  28. need some help with Ohm's law-fast!
  29. hybrid rectifier question
  30. I really, really wish I hadn't done that...
  31. Quicksilver 8417 conversion
  32. Supratek
  33. remote OPT, stupid idea ?
  34. Autoformer output stage
  35. Remote Power Supply: A Stupid Idea?
  36. Rjm simple tube phono pre
  37. Voltage controlled filter with tubes ??
  38. Does this look right to you?
  39. PWM amplifier hooked onto a tube preamp
  40. Zenith Console Opt Question, Odd Secondary
  41. Marchand LN108 Tube Phono Preamp
  42. Anyone care to express an opinion on this output Transformer
  43. 6L6 Triode strapped amp suggestions
  44. 6F1 and 6P2 Equivalents
  45. in memoriam Fred N. AKA 807
  46. Perplexed by 5AR4 Tube Socket? Picture Included
  47. Push pull 300B and more than a few questions...
  48. First tube project.
  49. DHT learning
  50. how do i add adjustable bias on amp?
  51. Tube tester: Accurate Instruments Model 157
  52. "El Cheapo Valve Phono" using 6ER5=>12AT7WC?
  53. Design Questions
  54. SRPP + Gainclone
  55. dht p-p filament question
  56. Report - 2005 London HiFi Show
  57. Want to build hi - power amp
  58. Gibson Skylark Grouding Questions
  59. Can I mod this circuit to use 6922 tubes?
  60. tube preamp kit question (again?)
  61. 3f4 spice models needed
  62. Back to Back transformers to get +B of 200V ??
  63. New amp project-some ideas of my own and looking for input from others...
  64. Emphasising the transients, but making the mediocre listenable
  65. Looking For a PP 6Y6GA Design
  66. Industrial vs Commercial amps and OPT's
  67. ECC99 operating points?
  68. Preamp suggestions for a tube newbie
  69. very odd thing happening in my amp... help
  70. 47 Penthode in triode mode.
  71. Capacitor value
  72. PSE bias how?
  73. GM70 Power supply
  74. interstage convert to phase splitter
  75. EL84 SE advice'n'schematics needed
  76. world's heaviest 2A3 amp?
  77. How To Tell What Tubes To Keep
  78. PX4 Trauma
  79. An amplifier project I'm looking for...
  80. Your 100volt plus moment
  81. Dynaco rectifier replacement?
  82. SET on a budget
  83. PSU Design Learning Links
  84. Expensive Commercial Amps
  85. Tube modified CD player with TDA1543
  86. Types of polypropylene capacitor....
  87. Fluorescent lamp choke - use in tube amp?
  88. Tube Overdrive
  89. Mains Transformer for EL34PP
  90. Please review schematic
  91. Wire size for projects?
  92. super simple tube amp needed...
  93. Modifing A Fender Bassman Scheme
  94. Matlab-based triode modelling software
  95. 12AT7 Pre-amp schematic, where to find?
  96. Test settings for Hickok 539A for 183/483 tube?
  97. choke input ripple level?
  98. 120 Hz Buzz Unplugged
  99. 300B like 845
  100. Guitar amp picks up radio??
  101. DC filament ground and high voltage ground
  102. Roll CALL: How many guitar amp guys are here
  103. DIY Club remote volume help?
  104. Aesthetix Rhea and I/O diagrams?
  105. Electrolytic vs polyprop capacitors
  106. Cathode Bypass Cap questions
  107. rectification and xfmr stress
  108. Audio Research
  109. Anybody got Melos MA-111 Schematic?
  110. Problem locating power supply
  111. Timer Relay
  112. Help With Jukebox Amp
  113. Help the Idiot: Simple, Great-Sounding Integrated Amp Designs
  114. Help Please Guitar Project Mess
  115. Help - tube driver for spring reverb...
  116. 6W6 as a driver
  117. Choosing the best EL34 pp opt
  118. Your opinion, please
  119. Tube surround sound
  120. Could you guys check this cascode article for me
  121. what would happen if...
  122. A Heretical Unity Gain Line Stage part III
  123. Which ECC83 tube and caps question
  124. Paralle Push Pull Simulclass
  125. organ amp question
  126. Stereo build- Mikael Abdellah's KT88 SE amp
  127. Audio Research AC21 cross over
  128. First DIY amp pics-as promised!
  129. emission-lab info
  130. Simple EL84 PP design needed
  131. 6C33 Circlotron
  132. Valves glow fierce
  133. Kirung's GM70 SE-Amps from Korea
  134. Digital Pots
  135. Troubleshooting First Tube Project
  136. Millett Low mu Preamp help
  137. thoughts about a 'universal' preamp
  138. Morgan Jones's Bevois Valley amp...
  139. Aikido line stage results? share yours
  140. Fender power transformer help
  141. HELP with breadboard layout!!!
  142. balanced line stage schematic needed
  143. Its Alive!! First Diy Amp Works!!
  144. Duncan Munro Psud primer please?
  145. Preamp volume control??
  146. Welborne 300b DRD plate current
  147. Active compensation...
  148. Calculating expected output power.
  149. Hybrid X line amp
  150. any way to fix a end cap on a 807 power tube
  151. power tube question
  152. MJ head-amp- how does it sound?
  153. Quick Aikido question
  154. What kind of amp?
  155. Problem with cathode resistor
  156. 2A3 DRD schematic wanted
  157. reduce before amplifying?
  158. 6AS7-G RCA application considerations
  159. Matisse Fantasy waveform output test
  160. El84/6bq5/ecc83 + Ef86 = Dc Pp
  161. Searching for simple circuit
  162. McIntosh MC60 Screens
  163. Improve this Pilot 240 (EL84/6BQ5)
  164. Eimac 35TG
  165. power supply issues
  166. Which Amperex ECC88 is the best?
  167. laney PA amp questions
  168. Grid battery bias on phono....
  169. EL34 identification
  170. Simple 6L6 PP Guitar Design Needed
  171. UL vs SE
  172. 6sn7 operating points
  173. HELP! B+ voltage problem/burning power resistor
  174. E280F Triode mode operating point
  175. are these tubes any good ?????
  176. Free Lunch/Monkey/DRD inspired 2A3
  177. EL84 Guitar amp questions (long, sorry)
  178. 2nd Aikido PCB and PSU groupbuy
  179. Newbie question...
  180. Help in getting more gain out of 300B SE
  181. ECC808 what to do
  182. Microphonics When Hot, Raytheon CK5842
  183. MOSCODE hybrid DIY
  184. transformer question
  185. help, my amp humz
  186. Le tube preamp
  187. Ideal operating point of 6sj7
  188. Convert a non-valve amp to a Valve (tube) Amp
  189. Anyone tried the Hammond 1642SE in a BIG SE amp?
  190. MOSFET current source as triode load
  191. C-core transformers
  192. choke and choke
  193. High Voltage Power Supply Caps
  194. suggestions for 300B tubes
  195. Differential input stage
  196. rca conversion
  197. heating
  198. Russian 6N8S/1578
  199. DIY tube amp squeals when turned up
  200. ECL80-Amp from Andreas Kirschner
  201. HSS preamp, anyone care to comment
  202. help me design an input stage for 6b4G PP
  203. Instrument/Microphone Tube Pre-amp
  204. first-time tube DIY project...phono preamp
  205. A question regarding schematics
  206. My first creation
  207. Your opinion on this VCCS heater supply please.
  208. Looking for ORIGINAL GE 6L6GC
  209. Need help - O/T trannies for future project
  210. ECL82 (6BM8) PP Stereo
  211. first DIY amp start up-yowza HELP!
  212. Ronette Info
  213. GE 5687 (5 stars)
  214. vox ac4
  215. Help: Toroid choke for a preamp
  216. Who makes a 1962 Bassman head chassis?
  217. does meter degrade sound ?
  218. Eye Tube (1629) controller help
  219. Scott 99B & 99C Public Auction Find
  220. tube id book
  221. radio , tv station and radar stations still use the best single end class a amplifier
  222. Stupid question?
  223. looking for ideas on a small tube amp stand?
  224. Cascode gain stage info?????
  225. hi gain preamp
  226. Tube flashing
  227. Bogen tube amp with variable Damping Factor
  228. Question re Allen Wright PP-1cs
  229. What is a good Tube tester to get?
  230. High Gain Preamp
  231. SACThailand
  232. You know you're a tube junky when...
  233. 6AU6 to do EF86 duty?
  234. 6Н28Б-В datasheet?
  235. Is single ended Class A better than push-pull?
  236. Is 845 better than 211 tube amplifier?
  237. Cool Fireworks (tubes are tough!)
  238. Big Big hum ???
  239. 5687 filament heater question
  240. Anyone know agood MOSFET drive for RCA 811A Tube?
  241. Who is into musical instrument tube amplification?
  242. buffer stage ECC88 or ECC83?
  243. EL34 Integrated
  244. Solid state HT regulator??
  245. Tubes driving dipole mids
  246. How do I turn an high current signal into a line level signal??
  247. Peer review, UL question
  248. Grundig TK60 - Where is the Line Out ?
  249. 12AX7, EL34 or 6L6 design wanted
  250. RCA to Speakers?