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  1. What is a reasonable amount ripple voltage for a 300B?
  2. "Old Like" sound transformer with a Tube !
  3. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  4. P-P resistance oddity
  5. Tube preamp vs. solid state
  6. 6l6 penthode triode
  7. Rising hum when turntable is plugged into preamp ??
  8. 6SL7 or 6SL7GT for broken Tubalizer
  9. Aikido PCB and AC filaments.
  10. Help with 300b proyect.
  11. 6P14P Amp Scratch Build
  12. 6GH8 - A Little Off?
  13. design and personality
  14. An all DHT push pull amp.
  15. Junk Pile Linestage
  16. need tube rectifier info
  17. Question on voltages
  18. How to change this design from penthode to triode or UL
  19. what glass-ware program?
  20. aikido 12b4 input 6sn7 output???
  21. GZ34 and temperature
  22. power supply for my single ended amp
  23. transmitter tube amp
  24. resistor and capacitor values for Aikido preamp
  25. need opinion on 2nd hand AF analyzers prices
  26. DH rectifier hookup.
  27. WE 310A vs. Russian 310A in WE91
  28. CRC PSU for preamp
  29. Question on the installation of LL1668 plate choke
  30. max plate voltage rating in tube datasheet
  31. Tube for a shunt voltage regulator
  32. choosing cap values for aikido
  33. Tubes in the Intermediate Stage
  34. c3m + 300b + miller capacitance
  35. How do I bias up a constant current series filament circuit?
  36. The perfect phono preamp.
  37. Got my 6BG6GA's last night
  38. Tubes4HiFi SP-6 preamp
  39. Stupid electrolytic cap question.......
  40. Shuguang 807s?
  41. LX-72A Sanity Check for Noooobie?
  42. Convert EL84 to 6V6? Anyone try this?
  43. PC96
  44. Ultrapath output transformers
  45. Grant RIAA phono with 12AX7/ECC83
  46. Tube VS SS voltage regulators - any advantages?
  47. Ra-a??
  48. Help with my el509 amp almost done but with one problem.
  49. McIntosh chassis help needed
  50. Tube Voltage Regulator Design
  51. DC Tube Amplifiers
  52. Coupling cap voltage rating
  53. Anyone experienced in the 76 tube?
  54. aikido thump
  55. bypassing preamp board in integrated amp
  56. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  57. is it really required to use carbon comp for grid stoppers?
  58. How much trickle current can fixed bias cathode batteries stand?
  59. Who is the administrator?
  60. LM329 as voltage reference in a CCS.
  61. Euridice Preamp with 5842 and LL1660
  62. Trans. alignments
  63. Audio Note M3 Kit modification
  64. Has anyone simulated an "Aikido" amplifier?
  65. Upgrading ST70 PS w/ SS question
  66. 6N1 Chinese tube and others
  67. 12AT7 Linestage design
  68. ECF80 instead of 7199
  69. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  70. 6922 vs 6SN7
  71. Transformer DCR's
  72. ferrite beads v. grid resistor
  73. What went wrong with my amp? Bass driver strange movement.
  74. Toccata Phono Preamp
  75. Drawbacks of Parafeed?
  76. aikido problem
  77. RS253 giant SE monoblock (Chinese)
  78. Plate chokes & Power chokes
  79. 10uF filter cap too small? PSU schematic inside
  80. best amp for rock n roll
  81. quick question about tube relays
  82. Yeo's Simple EL84 with a twist
  83. ST-70 OPT, A-470 question
  84. meixing 805 tube amp problems
  85. Advice for NOOBie - Dad's Scott LK-72
  86. KT66 SE amp, grid current or not?
  87. How do I achieve more output power?
  88. Driver stage load resistor
  89. More Edcor XSM10K/10K Specs
  90. DC filament
  91. driver stages
  92. Bay Area DIY is Cancelled Because....
  93. Is constant filament current better way to build amps?
  94. Next amp build - Trainwreck - Princeton - Deluxe ???
  95. Quicksilver M135 Output Transformers Color Code?
  96. Dynaco ST70 clone, tubes substitution question
  97. caddocks mk132: has anyone used them for tube projects?
  98. size of filtering caps SS vs OTL tube
  99. Current rating and tube current draw
  100. PP splitters again
  101. preamp with output trannies.
  102. Is it the 6SN7 or me?
  103. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  104. Manufacture date of 6SN7s
  105. simple 12AU7 cathode follower
  106. How's your bench, what's your favorite setup/tool ?
  107. Siemens H42 AM/FM receiver circuit diagram?
  108. 429A load lines
  109. Mu-stage on output
  110. My new project, 2 x KT88 60W amp
  111. Tube Amp Hum
  112. Modding MEIXING MC 3008
  113. Will this work for an EL84 push pull?
  114. "Integrated" or "stand alone"
  115. Heater to cathode voltage limits in cascodes???
  116. some Japanese can help me? (OPT trafo winding)
  117. Quicksilver 8417 a class C amp?
  118. Newcomer, where to start?
  119. Benefits of Potted Output Transformers
  120. Transformer question
  121. 6AW6A, Unloaded
  122. Aikido PSU help
  123. Rectifier that doesn't need own filament supply?
  124. Plate to Cathode Cap -- what's this??
  125. Need Help Understanding/Optimising a Schematic
  126. Simple basic question quick
  127. problem on thorens PR15 (strange filaments circuity)
  128. My 1W 5687 SE Direct Coupled Power Amp
  129. VT-25 linestage + step-down trafo
  130. What to do with 803's
  131. Newbie: KT88 amp info needed
  132. 805 tube amp, uProcessor controlled
  133. Class A Tube BJT Hybrid
  134. John Broskie's enhanced T8
  135. Audio Research SP6 E
  136. André Charlin anybody got his Tube Amp
  137. Info needed - Shuguang SG120-C Integrated Amp
  138. Help with 6SN7 preamp
  139. 12b4 vs. aikido linestage
  140. KT88/6550 as Triode
  141. 6AU6WA triode connected as a line amp?
  142. A few basic noobie questions.
  143. Which connector for PSU/chassis B+ supply?
  144. Quad II-Forty schematic ?:
  145. Audio Research Manuals
  146. I was thinking
  147. silicon or tube rectifier?
  148. Is this OK for the Etude Preamp?
  149. gary pimm's latest self-biasing CCS circuit
  150. 46 tube pre
  151. BEZ T9B Intermittent problem
  152. Heathkit W-5M rebuild
  153. Masco MA25N repair
  154. Sunday's Project
  155. 5881- 6l6
  156. Gas-Rectifier power supply
  157. How to get more juice out of this shunt regulator
  158. Resistors on DHT Cathode
  159. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  160. Help me finish up this SET project (multiple questions / ramblings)
  161. This Is Cool !!
  162. output bias servo
  163. Looking for dual power triodes.
  164. Need advice selecting a 2A3 design
  165. Feedback basics
  166. tubalizer..
  167. The 6b4g
  168. 6N6P Operating Points
  169. Lundahl+EL84 PP+concertina+input stage
  170. Looking for circuit of SE amp. for Eimac 100TH
  171. Counterpoint Sa-3000 Circuit Diagram
  172. compressor Faiirchild 670 DIY
  173. How much headroom for a choke---to stop it from humming?
  174. Bay Area Diy Festival
  175. Using Eagle for Tubes designs
  176. Worst that could happen?
  177. Identifying output tx.
  178. Small pre
  179. Cathode follower driver
  180. comment on this B+ supply
  181. ODD TUBES, what to look for?
  182. 2A3 SE and Edcorp tranny
  183. Differential amplifier with 12AX7
  184. Bogen Challenger CH30 Amplifier
  185. do I need to use a heatsink on a DN2540 in a B+ supply?
  186. Transformer, 10K 1:1 - which one?
  187. Where to find Blackgate Caps?
  188. Passive Pre-Amp causes huge power loss?
  189. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  190. Melos TM90 ST schematic?
  191. My first tube preamplifier:)
  192. Opinions on the Conrad Johnson MV75 amplifier please.
  193. Favorite Tubes
  194. SS replacement for 83 tube ?
  195. AMC CVT 2030 Output Transformer.
  196. 6-ohm speaker to tube amp
  197. What tubes share the pinout with the 5687?
  198. SMPS for B+ discussion
  199. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  200. SS No R No C Power Supply for Tubes
  201. FREDs? Replace 1N4003 rectifier diodes?
  202. Hot running regulated dc filament supply for aikido preamp
  203. B+ TX. overkill?
  204. 33 Power Pentode Design Pointers Needed
  205. What Wiki?
  206. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  207. Zen SE84TS
  208. 5687 tube
  209. Tube vs. Semiconducter rectification
  210. Bogen CHB35 Mods and Preamp ideas
  211. I Want To Build A 100+Watt per/channel Tube Poweramp
  212. Phonodude problem
  213. enjoythemusic's t-rex amp: where is the +70VDC tap?
  214. Earthing and how it effects sound.
  215. Rectifier question
  216. Help for SE Main Transformer
  217. 6D22S Getter Question
  218. Repair of a McIntosh MC225 power amp
  219. OPA627 with tube buffer....
  220. Bell Stereophonic 3030 help
  221. Choosing the line stage preamp.
  222. I Need Help, Mcintosh/Marantz 7 content
  223. For 45 > 845: selecting an 9.5/ 10 Interstage
  224. How to reduce gain of this Tube Preamplifier ?
  225. looking for pp amp schematic without nfb
  226. Pseudo dual mono PS?
  227. WE404A drive 6L6 solution
  228. Looking for info on loudness control
  229. Tubes and minority carriers
  230. suggestions for 3 projects please
  231. DIY tube preamp kit
  232. M6 lamination: what is it?
  233. why is it that most tube projects uses copper sheetmetal?
  234. Sources in the Philippines / Manila
  235. Tube noise - Help
  236. Tiny tube amp
  237. DC heating directly heated output valves
  238. Alps 250k in a Pas-3 Question
  239. 1st cap heats up...
  240. RCA VR Tube engineering data
  241. dropping heater voltage
  242. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  243. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  244. Which is the poor man 45 tube?
  245. Audio Note Low Gain Quest Power Amplifier
  246. Quad II: Which resistors?
  247. Designing a preamp with two tubes
  248. ARC Classic 30 problem
  249. Why does the 6AS7 have such high Miller capacitance ?
  250. serching 5A6 beam power pentode data/curves/schematics for AF practice amp

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