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  1. Shuguang 807s?
  2. LX-72A Sanity Check for Noooobie?
  3. Convert EL84 to 6V6? Anyone try this?
  4. PC96
  5. Ultrapath output transformers
  6. Grant RIAA phono with 12AX7/ECC83
  7. Tube VS SS voltage regulators - any advantages?
  8. Ra-a??
  9. Help with my el509 amp almost done but with one problem.
  10. McIntosh chassis help needed
  11. Tube Voltage Regulator Design
  12. DC Tube Amplifiers
  13. Coupling cap voltage rating
  14. Anyone experienced in the 76 tube?
  15. aikido thump
  16. bypassing preamp board in integrated amp
  17. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  18. is it really required to use carbon comp for grid stoppers?
  19. How much trickle current can fixed bias cathode batteries stand?
  20. Who is the administrator?
  21. LM329 as voltage reference in a CCS.
  22. Euridice Preamp with 5842 and LL1660
  23. Trans. alignments
  24. Audio Note M3 Kit modification
  25. Has anyone simulated an "Aikido" amplifier?
  26. Upgrading ST70 PS w/ SS question
  27. 6N1 Chinese tube and others
  28. 12AT7 Linestage design
  29. ECF80 instead of 7199
  30. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  31. 6922 vs 6SN7
  32. Transformer DCR's
  33. ferrite beads v. grid resistor
  34. What went wrong with my amp? Bass driver strange movement.
  35. Toccata Phono Preamp
  36. Drawbacks of Parafeed?
  37. aikido problem
  38. RS253 giant SE monoblock (Chinese)
  39. Plate chokes & Power chokes
  40. 10uF filter cap too small? PSU schematic inside
  41. HOT ROD DELUXE: CRACKLE...POP...what to do?
  42. converting Baldwin organ amp to guitar
  43. best amp for rock n roll
  44. quick question about tube relays
  45. Yeo's Simple EL84 with a twist
  46. ST-70 OPT, A-470 question
  47. meixing 805 tube amp problems
  48. Advice for NOOBie - Dad's Scott LK-72
  49. Peavey Valve King 112
  50. KT66 SE amp, grid current or not?
  51. 269EX in a champ?
  52. How do I achieve more output power?
  53. Driver stage load resistor
  54. More Edcor XSM10K/10K Specs
  55. DC filament
  56. driver stages
  57. Bay Area DIY is Cancelled Because....
  58. Is constant filament current better way to build amps?
  59. Next amp build - Trainwreck - Princeton - Deluxe ???
  60. Quicksilver M135 Output Transformers Color Code?
  61. Dynaco ST70 clone, tubes substitution question
  62. caddocks mk132: has anyone used them for tube projects?
  63. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  64. size of filtering caps SS vs OTL tube
  65. Current rating and tube current draw
  66. NUCLON -- My first hybrid guitar amp
  67. PP splitters again
  68. preamp with output trannies.
  69. Is it the 6SN7 or me?
  70. My Kind of Guitar Tuner
  71. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  72. Manufacture date of 6SN7s
  73. simple 12AU7 cathode follower
  74. How's your bench, what's your favorite setup/tool ?
  75. Siemens H42 AM/FM receiver circuit diagram?
  76. 429A load lines
  77. Mu-stage on output
  78. My new project, 2 x KT88 60W amp
  79. Tube Amp Hum
  80. Modding MEIXING MC 3008
  81. crate vc 2110 schematic ???
  82. Will this work for an EL84 push pull?
  83. "Integrated" or "stand alone"
  84. Heater to cathode voltage limits in cascodes???
  85. some Japanese can help me? (OPT trafo winding)
  86. Quicksilver 8417 a class C amp?
  87. Newcomer, where to start?
  88. Benefits of Potted Output Transformers
  89. Transformer question
  90. 6AW6A, Unloaded
  91. Aikido PSU help
  92. Rectifier that doesn't need own filament supply?
  93. Plate to Cathode Cap -- what's this??
  94. Need Help Understanding/Optimising a Schematic
  95. Simple basic question quick
  96. problem on thorens PR15 (strange filaments circuity)
  97. My 1W 5687 SE Direct Coupled Power Amp
  98. VT-25 linestage + step-down trafo
  99. What to do with 803's
  100. Newbie: KT88 amp info needed
  101. 805 tube amp, uProcessor controlled
  102. Class A Tube BJT Hybrid
  103. John Broskie's enhanced T8
  104. Audio Research SP6 E
  105. André Charlin anybody got his Tube Amp
  106. Info needed - Shuguang SG120-C Integrated Amp
  107. Help with 6SN7 preamp
  108. 12b4 vs. aikido linestage
  109. KT88/6550 as Triode
  110. 6AU6WA triode connected as a line amp?
  111. A few basic noobie questions.
  112. Which connector for PSU/chassis B+ supply?
  113. Quad II-Forty schematic ?:
  114. Audio Research Manuals
  115. I was thinking
  116. silicon or tube rectifier?
  117. Is this OK for the Etude Preamp?
  118. gary pimm's latest self-biasing CCS circuit
  119. 46 tube pre
  120. BEZ T9B Intermittent problem
  121. Heathkit W-5M rebuild
  122. Masco MA25N repair
  123. Sunday's Project
  124. 5881- 6l6
  125. Gas-Rectifier power supply
  126. How to get more juice out of this shunt regulator
  127. Resistors on DHT Cathode
  128. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  129. Help me finish up this SET project (multiple questions / ramblings)
  130. This Is Cool !!
  131. output bias servo
  132. Looking for dual power triodes.
  133. Need advice selecting a 2A3 design
  134. Feedback basics
  135. tubalizer..
  136. The 6b4g
  137. 6N6P Operating Points
  138. Lundahl+EL84 PP+concertina+input stage
  139. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  140. Looking for circuit of SE amp. for Eimac 100TH
  141. Counterpoint Sa-3000 Circuit Diagram
  142. compressor Faiirchild 670 DIY
  143. How much headroom for a choke---to stop it from humming?
  144. Bay Area Diy Festival
  145. Using Eagle for Tubes designs
  146. Worst that could happen?
  147. Identifying output tx.
  148. Small pre
  149. Cathode follower driver
  150. comment on this B+ supply
  151. ODD TUBES, what to look for?
  152. 2A3 SE and Edcorp tranny
  153. Differential amplifier with 12AX7
  154. Bogen Challenger CH30 Amplifier
  155. do I need to use a heatsink on a DN2540 in a B+ supply?
  156. Transformer, 10K 1:1 - which one?
  157. Where to find Blackgate Caps?
  158. Passive Pre-Amp causes huge power loss?
  159. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  160. Melos TM90 ST schematic?
  161. My first tube preamplifier:)
  162. Opinions on the Conrad Johnson MV75 amplifier please.
  163. Favorite Tubes
  164. SS replacement for 83 tube ?
  165. AMC CVT 2030 Output Transformer.
  166. 6-ohm speaker to tube amp
  167. What tubes share the pinout with the 5687?
  168. SMPS for B+ discussion
  169. Building a 200W+ bass amp
  170. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  171. SS No R No C Power Supply for Tubes
  172. FREDs? Replace 1N4003 rectifier diodes?
  173. Hot running regulated dc filament supply for aikido preamp
  174. B+ TX. overkill?
  175. 33 Power Pentode Design Pointers Needed
  176. What Wiki?
  177. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  178. Zen SE84TS
  179. 5687 tube
  180. Tube vs. Semiconducter rectification
  181. Bogen CHB35 Mods and Preamp ideas
  182. I Want To Build A 100+Watt per/channel Tube Poweramp
  183. Phonodude problem
  184. enjoythemusic's t-rex amp: where is the +70VDC tap?
  185. Earthing and how it effects sound.
  186. Rectifier question
  187. Help for SE Main Transformer
  188. 6D22S Getter Question
  189. Repair of a McIntosh MC225 power amp
  190. OPA627 with tube buffer....
  191. Bell Stereophonic 3030 help
  192. Choosing the line stage preamp.
  193. I Need Help, Mcintosh/Marantz 7 content
  194. For 45 > 845: selecting an 9.5/ 10 Interstage
  195. How to reduce gain of this Tube Preamplifier ?
  196. looking for pp amp schematic without nfb
  197. Pseudo dual mono PS?
  198. WE404A drive 6L6 solution
  199. Looking for info on loudness control
  200. Tubes and minority carriers
  201. suggestions for 3 projects please
  202. DIY tube preamp kit
  203. M6 lamination: what is it?
  204. why is it that most tube projects uses copper sheetmetal?
  205. Sources in the Philippines / Manila
  206. Tube noise - Help
  207. Strange reverb circuit
  208. Tiny tube amp
  209. DC heating directly heated output valves
  210. Alps 250k in a Pas-3 Question
  211. 1st cap heats up...
  212. RCA VR Tube engineering data
  213. dropping heater voltage
  214. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  215. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  216. Which is the poor man 45 tube?
  217. Audio Note Low Gain Quest Power Amplifier
  218. Quad II: Which resistors?
  219. Designing a preamp with two tubes
  220. ARC Classic 30 problem
  221. Why does the 6AS7 have such high Miller capacitance ?
  222. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  223. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  224. HPHV regulator measurement
  225. DHT Topology Comparison Question
  226. Secondary Tap of Power Transformer?
  227. Soft-clipping Circuit/tubecad
  228. lack of bass in a 6h30 design
  229. Difference between two novals
  230. C3g
  231. All Tube Stereo power amplifier
  232. what gas VR tube?
  233. KT88 schematic
  234. Help me understand the topologies here...
  235. Finished my Amp, Need to build a PS
  236. Push-Pull driver stage?
  237. Floating the heaters
  238. Replacing Power Transformer
  239. When car audio & tubes collide...
  240. 6N6P and 6SN7 Operating point suggestions
  241. NOS pF capacitors voltage rating?
  242. Tubes in Vietnam
  243. Passive pre order?
  244. layout help
  245. junkbox amp help
  246. required specs of an input step up transformer, into a 45, to allow it drive an 845
  247. 6as7 SRPP output stage
  248. Bias range and selenium rectifier
  249. OTL's and aircraft transformers
  250. PSE EL34 - valve rectification question

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