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  1. SET recommendations
  2. Dynaco ST35
  3. Scott LK-72A is ALIVE
  4. 5687 as a single stage SE amp
  5. Changing two stereo amps into two monos
  6. UL Feedback Tap Calculation
  7. Precision Test Equipment tube tester
  8. Octal pentode sub for ef86?
  9. Help with guitar amp sound
  10. to mach1: tubecad regulator using tl431
  11. Thermal management: it this not really of concern?
  12. Signal phase shift through a tube amp
  13. Common-mode EI PS Chokes
  14. Signal pentode in current production
  15. Pentode vs Ultralinear
  16. Bogen CHA33/CHA33Y
  17. Sheet Metal Gauge
  18. Help with 6N6p
  19. Can anyone help, identifing selenium bridge hookup please.
  20. E182CC substitution ?
  21. Face Plate Printing and Silk Screening
  22. Funky reading 12B4A?
  23. Sovtek 5Y3 Issues
  24. from lilliput to gargantua (just for fun)
  25. Formula for calculating HT voltage?
  26. DIY Headamp for Sennheiser-650?
  27. Nuera Tube Amps
  28. Amplifier identification
  29. Perfect tube regulator
  30. Value of grid leak resistor
  31. Comments on this circuit
  32. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  33. Heater current monitoring...
  34. on-off switch position in PSU
  35. A better LDO heater regulator
  36. Guitar Head Amp Schematic
  37. any feedback on Russian gas regulators like SG4S and etc.?
  38. Some cathode follower questions
  39. rectifier voltage drop
  40. Anyone please explain"What is an A1,A2 in SE amp?
  41. Interesting link for guitar amps
  42. What is the correct plate voltage in this circuit?
  43. Any1 have an Osmond PCB library for tubes?
  44. best type cap for preamp PSU
  45. Steve Bench PP loadlines
  46. single Diode power supply?
  47. Spice Error
  48. Anyone have a Welborne Labs amp?
  49. Please help out a Noobie...
  50. wellborne labs
  51. best schematic designer for tubes?
  52. hum in 1 channel
  53. B+ time delay relay
  54. something is wrong with the shunt regulator
  55. Suggestions for a high end tube amp kit
  56. Conrad Johnson PV 7 problem
  57. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  58. Power supply dilemma
  59. Transformer Placement 5E3
  60. Please help: no sound and blown fuse
  61. sparking Output transformer In Webcor 14x240 Amp
  62. Designing my very first tube amp...
  63. Diode bridge for Valve Buffered GC
  64. 6S41S (6C41C) Amplifier
  65. audio research sp11 upgrade help please
  66. The good, the bad, and the ugly OTL amplifiers
  67. Z2b tube rectifier
  68. Sparks inside GZ34
  69. Help with EV4417 6cm5/EL36
  70. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  71. My Cornet2 Tube Phono Preamp
  72. bright switch to bias circuit?
  73. Regulated AC...thought some of you might be interested
  74. Aikido PSU - integrated or standalone???
  75. Frank Philipse's tube site
  76. World' smallest GM-70 set
  77. Question on output hum on tube amp?
  78. Aikido Preamp
  79. Argh!!
  80. EL84 bias point
  81. Coupling cap rating
  82. Regulated power supply
  83. outstanding book??
  84. when the datasheet says "vertical mounting: up or down", does it mean...
  85. half wave rectifier will not saturate transformer core?
  86. Did I get in over my head too soon?!?
  87. Parallel output tubes
  88. Dropping filament volts/ L-W ramblings
  89. Rogers Cadet III Power problem ?
  90. about bi-cap
  91. HOT Iron ?
  92. how to set current in G Pimm's latest self-biasing CCS circuit?
  93. Low pass active tube crossover
  94. Ecological recycling amplifier (6CU6)
  95. Need ECF80 / 6BL8 tube spice 3f4 model
  96. Capacitor above chassis
  97. PS Help
  98. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  99. Transmitter tubes
  100. Power Supply Construction
  101. what are the advantages of double core output transformers vs EI ?
  102. What is a reasonable amount ripple voltage for a 300B?
  103. "Old Like" sound transformer with a Tube !
  104. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  105. P-P resistance oddity
  106. Tube preamp vs. solid state
  107. 6l6 penthode triode
  108. Rising hum when turntable is plugged into preamp ??
  109. 6SL7 or 6SL7GT for broken Tubalizer
  110. Aikido PCB and AC filaments.
  111. Help with 300b proyect.
  112. 6P14P Amp Scratch Build
  113. 6GH8 - A Little Off?
  114. design and personality
  115. An all DHT push pull amp.
  116. Junk Pile Linestage
  117. need tube rectifier info
  118. Question on voltages
  119. How to change this design from penthode to triode or UL
  120. what glass-ware program?
  121. aikido 12b4 input 6sn7 output???
  122. GZ34 and temperature
  123. schematic search crate bv-60
  124. First Guitar Amp Help
  125. power supply for my single ended amp
  126. transmitter tube amp
  127. resistor and capacitor values for Aikido preamp
  128. need opinion on 2nd hand AF analyzers prices
  129. DH rectifier hookup.
  130. WE 310A vs. Russian 310A in WE91
  131. CRC PSU for preamp
  132. Question on the installation of LL1668 plate choke
  133. max plate voltage rating in tube datasheet
  134. Tube for a shunt voltage regulator
  135. choosing cap values for aikido
  136. Tubes in the Intermediate Stage
  137. c3m + 300b + miller capacitance
  138. How do I bias up a constant current series filament circuit?
  139. The perfect phono preamp.
  140. Got my 6BG6GA's last night
  141. Tubes4HiFi SP-6 preamp
  142. Stupid electrolytic cap question.......
  143. Shuguang 807s?
  144. LX-72A Sanity Check for Noooobie?
  145. Convert EL84 to 6V6? Anyone try this?
  146. PC96
  147. Ultrapath output transformers
  148. Grant RIAA phono with 12AX7/ECC83
  149. Tube VS SS voltage regulators - any advantages?
  150. Ra-a??
  151. Help with my el509 amp almost done but with one problem.
  152. McIntosh chassis help needed
  153. Tube Voltage Regulator Design
  154. DC Tube Amplifiers
  155. Coupling cap voltage rating
  156. Anyone experienced in the 76 tube?
  157. aikido thump
  158. bypassing preamp board in integrated amp
  159. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  160. is it really required to use carbon comp for grid stoppers?
  161. How much trickle current can fixed bias cathode batteries stand?
  162. Who is the administrator?
  163. LM329 as voltage reference in a CCS.
  164. Euridice Preamp with 5842 and LL1660
  165. Trans. alignments
  166. Audio Note M3 Kit modification
  167. Has anyone simulated an "Aikido" amplifier?
  168. Upgrading ST70 PS w/ SS question
  169. 6N1 Chinese tube and others
  170. 12AT7 Linestage design
  171. ECF80 instead of 7199
  172. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  173. 6922 vs 6SN7
  174. Transformer DCR's
  175. ferrite beads v. grid resistor
  176. What went wrong with my amp? Bass driver strange movement.
  177. Toccata Phono Preamp
  178. Drawbacks of Parafeed?
  179. aikido problem
  180. RS253 giant SE monoblock (Chinese)
  181. Plate chokes & Power chokes
  182. 10uF filter cap too small? PSU schematic inside
  183. HOT ROD DELUXE: CRACKLE...POP...what to do?
  184. converting Baldwin organ amp to guitar
  185. best amp for rock n roll
  186. quick question about tube relays
  187. Yeo's Simple EL84 with a twist
  188. ST-70 OPT, A-470 question
  189. meixing 805 tube amp problems
  190. Advice for NOOBie - Dad's Scott LK-72
  191. Peavey Valve King 112
  192. KT66 SE amp, grid current or not?
  193. 269EX in a champ?
  194. How do I achieve more output power?
  195. Driver stage load resistor
  196. More Edcor XSM10K/10K Specs
  197. DC filament
  198. driver stages
  199. Bay Area DIY is Cancelled Because....
  200. Is constant filament current better way to build amps?
  201. Next amp build - Trainwreck - Princeton - Deluxe ???
  202. Quicksilver M135 Output Transformers Color Code?
  203. Dynaco ST70 clone, tubes substitution question
  204. caddocks mk132: has anyone used them for tube projects?
  205. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  206. size of filtering caps SS vs OTL tube
  207. Current rating and tube current draw
  208. NUCLON -- My first hybrid guitar amp
  209. PP splitters again
  210. preamp with output trannies.
  211. Is it the 6SN7 or me?
  212. My Kind of Guitar Tuner
  213. Regulating tube amp power supply - can Iget away with a simpler CLC filtering scheme?
  214. Manufacture date of 6SN7s
  215. simple 12AU7 cathode follower
  216. How's your bench, what's your favorite setup/tool ?
  217. Siemens H42 AM/FM receiver circuit diagram?
  218. 429A load lines
  219. Mu-stage on output
  220. My new project, 2 x KT88 60W amp
  221. Tube Amp Hum
  222. Modding MEIXING MC 3008
  223. crate vc 2110 schematic ???
  224. Will this work for an EL84 push pull?
  225. "Integrated" or "stand alone"
  226. Heater to cathode voltage limits in cascodes???
  227. some Japanese can help me? (OPT trafo winding)
  228. Quicksilver 8417 a class C amp?
  229. Newcomer, where to start?
  230. Benefits of Potted Output Transformers
  231. Transformer question
  232. 6AW6A, Unloaded
  233. Aikido PSU help
  234. Rectifier that doesn't need own filament supply?
  235. Plate to Cathode Cap -- what's this??
  236. Need Help Understanding/Optimising a Schematic
  237. Simple basic question quick
  238. problem on thorens PR15 (strange filaments circuity)
  239. My 1W 5687 SE Direct Coupled Power Amp
  240. VT-25 linestage + step-down trafo
  241. What to do with 803's
  242. Newbie: KT88 amp info needed
  243. 805 tube amp, uProcessor controlled
  244. Class A Tube BJT Hybrid
  245. John Broskie's enhanced T8
  246. Audio Research SP6 E
  247. André Charlin anybody got his Tube Amp
  248. Info needed - Shuguang SG120-C Integrated Amp
  249. Help with 6SN7 preamp
  250. 12b4 vs. aikido linestage

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