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  1. 802 as an audio output tube
  2. Changing 6DJ8 SRPP stage gain
  3. Cooling In Cab / Minimum Vent Area?
  4. Tube voltage help
  5. MF XPre troubleshooting
  6. Giaime's Preamp Finished!!!
  7. Circuit and PCB Layout comments
  8. 4613 triode
  9. Help with inverter CCS+NFB
  10. Question about KT 88 integrated
  11. The Trials, and Tribulations of Bias
  12. Which components should be matched?
  13. Using PP output for SE?
  14. Tube Newbee Needing Guidance
  15. 12A/71A SET project
  16. 805 SE amplifier
  17. Playing with screen resistors
  18. Interpret this 12ax7 feedback loop
  19. Low voltage-drop CCS for LTP input stage?
  20. Tube Socket Mounting - rigid or floating
  21. SE-9 mod help please
  22. 2a3SE
  23. 20 Watt SE. I had found it.
  24. Ok to exceed Vg2 in triode? (Yes)
  25. Help needed in Bloomington IN
  26. % error for primary resistance
  27. Help Understanding Circuit (grounded grid I/V)
  28. Testing a 70.7v transformer
  29. thyratron?
  30. Tube frontend....
  31. Transformer and Choke Grounding?
  32. El509 Pse
  33. 6550 Safety Question
  34. Jadis Defy 7 : Manual
  35. Melos Ma-111b
  36. Old audio amp change
  37. Need 45 tubes
  38. Jadis Defy 7 : Manual ??
  39. Help for pre-amp and two single-ended finals
  40. Schematic needed:MFA Magus B
  41. Can I remove the input caps?
  42. 807 vs. 1624 tetrode ?
  43. how to make tube amp sound layback and mellow?
  44. Standard tube filament voltages and currents
  45. SE 20W. What tube?
  46. 5687 Linestage behaving odd...
  47. SMPS & tube pre-amp development board.
  48. Question about Melody KT88 amp
  49. Trafomatic Transformer
  50. Diode trick?
  51. Return of the vacuum tube sonic hologram generator
  52. 6V6 ->EL84 with 12AT7?
  53. design for 6336A OTL amp needed
  54. Aikido sound?
  55. Valve preamp
  56. GAS VR Tubes on B+
  57. Measuring Triode-Connected Pentode Curves
  58. 6L6, 12L6 not same tube!
  59. equivilent part numbers for 6K35HF
  60. Is this a start or run cap
  61. 6V6 PP under construction - pics
  62. Is this practical
  63. Idea for a 2 tube 6080 PP amp.
  64. pls tell where to buy core of transformer
  65. 300B amp PS optimization?
  66. Different value for .47uf coupling cap
  67. Old Olympic audio tube amp
  68. What Design to Use?
  69. KT90's anyone using'em ?
  70. What are they?
  71. Replace el34 with 6p3s
  72. Advice on 6V6 push pull Parallel
  73. squealing output transformer
  74. Melos Sha Gold
  75. Ways to Lower B+ in a Tube Rectifed PS
  76. Oregon Electronics D6 HV supplies: info needed please
  77. My version of the Vacuum State FVP5
  78. Diy Tube Phono Preamp
  79. double check the math
  80. Kitparts line stage
  81. Aikido tube heater floating
  82. Cathode and other types of feedback
  83. Tube God TH-1 Amp Regulator PCB ????
  84. step-up travel transformer for small preamp?
  85. Help a total tube amp newbie find a super simple design...
  86. heretical unity gain and ccs question
  87. What To Do
  88. Parallel Two Tubes
  89. 4 x PSE EL34
  90. EL34 CCS help
  91. Single Ended EL-34?
  92. Zener Bias
  93. Looking to build a tube amp.
  94. Tube humming question
  95. YAPPAP (Yet Another Push-Pull Amplifier Project)
  96. voltage output dac ==> TUBE
  97. Heater switch transistor
  98. Anything post power transformer that can cause it to hum / buzz?
  99. Aikido enclosure
  100. Power Transformers. Decisions
  101. First tube after IV
  102. Suggestions for Upgrade - VDV70/100
  103. New Hybrid Output Stage and booster for SE Amp
  104. Pro and cons high DCR filter choke
  105. do-it yourself leslie help
  106. John Broskie Aikido boards
  107. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  108. Limited run PCBs - where's copyright???
  109. Hammond Amp Question
  110. Impedance matching
  111. 6111 output for CD player - opinions - some help?
  112. Sensitivity Limiter - Bogen Mx-30a
  113. Are my speakers efficient enough for tubes?
  114. Ping Sy: LED for Cathode Bias
  115. PSU capacitors/electrolytics
  116. 2A3 monoblock power supply
  117. 2 tube questions
  118. Just acquired HEATHKIT W4-AM-*picture*
  119. Passive line stage with tubes
  120. My favorite preamp
  121. Again, a preamp tube choice.
  122. Class Double A
  123. Two Stereo Tube Amps Into Monoblocks
  124. Espey AM/FM radio (pentagrid mixer, etc.)
  125. Need help for DIY EL34PP tube amp
  126. Higher value oil capacitors?
  127. Transconductance.
  128. 5763 tetrode on OTL ?
  129. cornford harlequin
  130. Need help: 5687 tubes and heat dissipation
  131. Tube preamp, tone control problem
  132. Use 5KV transformer as output transformer?
  133. Any EL84 alternatives?
  134. help on id of tubes
  135. Sovtek 6CA7-EH Producing smoke...
  136. building V4's and phono pre
  137. pre out on a integrated tube amp?
  138. 6SN7 some good some bad
  139. Phono pre amp - thanks SY
  140. 6c33c Tube preamp
  141. Tubes for Lumley ST40 power amplifier?
  142. Plate supply of Conrad Johnson PV-5 ?
  143. 6CD6GA in Enhanced Triode Mode for SE Amp
  144. Gridstoppers against RF, a necessity ?
  145. where do I.E.T. tubes come from
  146. Hum 300b Again
  147. Pse El34
  148. Mcintosh MR65 Tube Tuner
  149. Problem: Really Bright glowing 6CA7
  150. New member introduction & question
  151. The "PowerTotem"... a new way to SET?
  152. Please advice on KT88 Push Pull
  153. Odd's n Ends Revisited 6V6 SE amp
  154. Bottlehead Foreplay with chipamp
  155. Next Amp: 2a3PSE, 300B or KT88SE UL
  156. transformer list
  157. do 300b amps really sound any good?
  158. Capacitance For Mono Block Design
  159. pilot 264
  160. Octal equivalents for 6C45?
  161. lm3875 chipamp and tube pre loud buzzing
  162. PSE UL EL84 or 6V6 or EL34?
  163. Paraphase Splitter - why is it unpopular?
  164. Tubed IR spectrophotometer
  165. Very Basic 12AX7 Heater Question
  166. 6072A/12AY7 for an AKG C12 Microphone
  167. SET Suggestions
  168. Will ccs work with a DHT?
  169. tube patents
  170. Why use E182CC?
  171. tube
  172. understanding transformer codes
  173. Maida regulator, these results expected?
  174. Moto chassis pulled! pics!
  175. glasshouse kit amps. Any good?
  176. class B
  177. a.r.t. mpa tube pre amp
  178. Upper and lower triode in E88CC
  179. Booster Amps
  180. Help on Magnavox Paraphase (Gabevee?)
  181. New stock pre -amp tubes. Whats good?
  182. CV2492 / 6922 / E88CC
  183. HK Citation II Bias "issues"
  184. 3k vs. 5k transformer for PP 2A3
  185. Turret terminal board for line stage construction?
  186. Tube Cage Question
  187. Small and easy ESL amp
  188. SOVTEK 6550WE's any good?
  189. power tube for drivers
  190. 12B4A line driver/preamp
  191. Question about tube amp power supply caps
  192. Why separate AC heater supplies for driver and power tubes?
  193. Using one half of double triode
  194. huh ?
  195. holy cow, this sounds nice
  196. my SY CCS is only giving me 15mA
  197. Changing filter cap in HH Scott
  198. Why Class AB is bad
  199. Problem, please help !!!!!!
  200. Eico hf-30 reworking
  201. KT88 Bias Adjustment
  202. Interstage Distortion Measurements
  203. Survey: Aikido distortion
  204. Loftin-White Mod
  205. Music Angel EL34
  206. How much filtering required for DC heaters?
  207. What is the best input/driver for 2A3 SE?
  208. tube kits....
  209. 12AX7 heater wiring? Series / parallel?
  210. Shunt regulator
  211. Trying to choose a project...
  212. Old Projector amp conversion project
  213. Experiences with TJ Mesh Plate DHT's
  214. The lost Millman Seely chapters on audio amps
  215. Individual fixed bias and transf coupling
  216. Transmitter e-tour
  217. 7984
  218. Screen driven EL36 / 6CM5 /PL36 /25E5
  219. Clone Marantz 7C power supply
  220. On - board supply ?
  221. Name that EL34!
  222. How much plate voltage for 6N1P's?
  223. minimalist valve pre for follower
  224. Tube availability: what would you do?
  225. Looking for EL32 schematic
  226. oil bath cooling for tubes?
  227. Aikido Crackle Hiss Noise Solved
  228. Mini-p1 tweaks
  229. Refried Power Supply?
  230. The Edcor meets the 6AV5
  231. Anyone have curves for a 5HC7?
  232. Any common cathode (grounded grid) schematics?
  233. SIMPLE tube amplifier for...dummy guy...
  234. ground and earth
  235. Tube Cad Journal dead
  236. First amp
  237. 6922 direct coupled to 2A3
  238. Ok guys, get your daggers out.......
  239. How would you build a hybrid LM3xxx amp?
  240. Tade no tube amp!
  241. Sherwood 5500
  242. Most accurate way of matching triodes ?
  243. Help Identify This AMP!
  244. Old Tube Equipment Turnon
  245. Current Sourced Cathode Follower
  246. noob pre/pwer amp recording ?s
  247. Anyone heard of "in-rush" limiter resistor
  248. Will adding a 10H/125mA choke hurt bass performance
  249. Fixed bias vs. auto bias
  250. Not your average output transformer problem

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