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  1. Tube frontend....
  2. Transformer and Choke Grounding?
  3. El509 Pse
  4. 6550 Safety Question
  5. Jadis Defy 7 : Manual
  6. Melos Ma-111b
  7. Old audio amp change
  8. Need 45 tubes
  9. Jadis Defy 7 : Manual ??
  10. Help for pre-amp and two single-ended finals
  11. Schematic needed:MFA Magus B
  12. Can I remove the input caps?
  13. 807 vs. 1624 tetrode ?
  14. how to make tube amp sound layback and mellow?
  15. Standard tube filament voltages and currents
  16. SE 20W. What tube?
  17. 5687 Linestage behaving odd...
  18. SMPS & tube pre-amp development board.
  19. Question about Melody KT88 amp
  20. Trafomatic Transformer
  21. Diode trick?
  22. Return of the vacuum tube sonic hologram generator
  23. 6V6 ->EL84 with 12AT7?
  24. design for 6336A OTL amp needed
  25. Aikido sound?
  26. Valve preamp
  27. GAS VR Tubes on B+
  28. Measuring Triode-Connected Pentode Curves
  29. 6L6, 12L6 not same tube!
  30. equivilent part numbers for 6K35HF
  31. Is this a start or run cap
  32. 6V6 PP under construction - pics
  33. Is this practical
  34. Idea for a 2 tube 6080 PP amp.
  35. pls tell where to buy core of transformer
  36. 300B amp PS optimization?
  37. Different value for .47uf coupling cap
  38. Old Olympic audio tube amp
  39. What Design to Use?
  40. KT90's anyone using'em ?
  41. What are they?
  42. Replace el34 with 6p3s
  43. Advice on 6V6 push pull Parallel
  44. squealing output transformer
  45. Melos Sha Gold
  46. Ways to Lower B+ in a Tube Rectifed PS
  47. Oregon Electronics D6 HV supplies: info needed please
  48. My version of the Vacuum State FVP5
  49. Diy Tube Phono Preamp
  50. double check the math
  51. Kitparts line stage
  52. Aikido tube heater floating
  53. Cathode and other types of feedback
  54. Tube God TH-1 Amp Regulator PCB ????
  55. step-up travel transformer for small preamp?
  56. Help a total tube amp newbie find a super simple design...
  57. heretical unity gain and ccs question
  58. What To Do
  59. Parallel Two Tubes
  60. 4 x PSE EL34
  61. EL34 CCS help
  62. Tube curve tracer project
  63. Single Ended EL-34?
  64. maxi tube tester?
  65. Zener Bias
  66. Looking to build a tube amp.
  67. Tube humming question
  68. YAPPAP (Yet Another Push-Pull Amplifier Project)
  69. voltage output dac ==> TUBE
  70. Heater switch transistor
  71. Anything post power transformer that can cause it to hum / buzz?
  72. Aikido enclosure
  73. Power Transformers. Decisions
  74. First tube after IV
  75. Suggestions for Upgrade - VDV70/100
  76. New Hybrid Output Stage and booster for SE Amp
  77. Pro and cons high DCR filter choke
  78. do-it yourself leslie help
  79. John Broskie Aikido boards
  80. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  81. Limited run PCBs - where's copyright???
  82. Hammond Amp Question
  83. Impedance matching
  84. 6111 output for CD player - opinions - some help?
  85. Sensitivity Limiter - Bogen Mx-30a
  86. Are my speakers efficient enough for tubes?
  87. Ping Sy: LED for Cathode Bias
  88. PSU capacitors/electrolytics
  89. 2A3 monoblock power supply
  90. 2 tube questions
  91. Just acquired HEATHKIT W4-AM-*picture*
  92. Passive line stage with tubes
  93. My favorite preamp
  94. Again, a preamp tube choice.
  95. Class Double A
  96. Two Stereo Tube Amps Into Monoblocks
  97. Espey AM/FM radio (pentagrid mixer, etc.)
  98. Need help for DIY EL34PP tube amp
  99. Higher value oil capacitors?
  100. Transconductance.
  101. 5763 tetrode on OTL ?
  102. cornford harlequin
  103. Need help: 5687 tubes and heat dissipation
  104. Tube preamp, tone control problem
  105. Use 5KV transformer as output transformer?
  106. Any EL84 alternatives?
  107. help on id of tubes
  108. Sovtek 6CA7-EH Producing smoke...
  109. building V4's and phono pre
  110. pre out on a integrated tube amp?
  111. 6SN7 some good some bad
  112. Phono pre amp - thanks SY
  113. 6c33c Tube preamp
  114. Tubes for Lumley ST40 power amplifier?
  115. Plate supply of Conrad Johnson PV-5 ?
  116. 6CD6GA in Enhanced Triode Mode for SE Amp
  117. Gridstoppers against RF, a necessity ?
  118. where do I.E.T. tubes come from
  119. Hum 300b Again
  120. Pse El34
  121. Mcintosh MR65 Tube Tuner
  122. Problem: Really Bright glowing 6CA7
  123. New member introduction & question
  124. The "PowerTotem"... a new way to SET?
  125. Please advice on KT88 Push Pull
  126. Odd's n Ends Revisited 6V6 SE amp
  127. Bottlehead Foreplay with chipamp
  128. Next Amp: 2a3PSE, 300B or KT88SE UL
  129. transformer list
  130. do 300b amps really sound any good?
  131. Capacitance For Mono Block Design
  132. pilot 264
  133. Octal equivalents for 6C45?
  134. lm3875 chipamp and tube pre loud buzzing
  135. PSE UL EL84 or 6V6 or EL34?
  136. Paraphase Splitter - why is it unpopular?
  137. Tubed IR spectrophotometer
  138. Very Basic 12AX7 Heater Question
  139. 6072A/12AY7 for an AKG C12 Microphone
  140. SET Suggestions
  141. Will ccs work with a DHT?
  142. tube patents
  143. Why use E182CC?
  144. tube
  145. understanding transformer codes
  146. Maida regulator, these results expected?
  147. Moto chassis pulled! pics!
  148. glasshouse kit amps. Any good?
  149. class B
  150. a.r.t. mpa tube pre amp
  151. Upper and lower triode in E88CC
  152. Booster Amps
  153. Help on Magnavox Paraphase (Gabevee?)
  154. New stock pre -amp tubes. Whats good?
  155. CV2492 / 6922 / E88CC
  156. HK Citation II Bias "issues"
  157. 3k vs. 5k transformer for PP 2A3
  158. Turret terminal board for line stage construction?
  159. Tube Cage Question
  160. Small and easy ESL amp
  161. SOVTEK 6550WE's any good?
  162. power tube for drivers
  163. 12B4A line driver/preamp
  164. Question about tube amp power supply caps
  165. Why separate AC heater supplies for driver and power tubes?
  166. Using one half of double triode
  167. huh ?
  168. holy cow, this sounds nice
  169. my SY CCS is only giving me 15mA
  170. Changing filter cap in HH Scott
  171. Why Class AB is bad
  172. Problem, please help !!!!!!
  173. Eico hf-30 reworking
  174. KT88 Bias Adjustment
  175. Interstage Distortion Measurements
  176. Survey: Aikido distortion
  177. Loftin-White Mod
  178. Music Angel EL34
  179. How much filtering required for DC heaters?
  180. What is the best input/driver for 2A3 SE?
  181. tube kits....
  182. 12AX7 heater wiring? Series / parallel?
  183. Shunt regulator
  184. Trying to choose a project...
  185. Old Projector amp conversion project
  186. Experiences with TJ Mesh Plate DHT's
  187. The lost Millman Seely chapters on audio amps
  188. Individual fixed bias and transf coupling
  189. Transmitter e-tour
  190. 7984
  191. Screen driven EL36 / 6CM5 /PL36 /25E5
  192. Clone Marantz 7C power supply
  193. On - board supply ?
  194. Name that EL34!
  195. How much plate voltage for 6N1P's?
  196. minimalist valve pre for follower
  197. Tube availability: what would you do?
  198. Looking for EL32 schematic
  199. oil bath cooling for tubes?
  200. Aikido Crackle Hiss Noise Solved
  201. Mini-p1 tweaks
  202. Refried Power Supply?
  203. The Edcor meets the 6AV5
  204. Anyone have curves for a 5HC7?
  205. Any common cathode (grounded grid) schematics?
  206. SIMPLE tube amplifier for...dummy guy...
  207. ground and earth
  208. Tube Cad Journal dead
  209. First amp
  210. 6922 direct coupled to 2A3
  211. Ok guys, get your daggers out.......
  212. How would you build a hybrid LM3xxx amp?
  213. Tade no tube amp!
  214. Sherwood 5500
  215. Most accurate way of matching triodes ?
  216. Help Identify This AMP!
  217. Old Tube Equipment Turnon
  218. Current Sourced Cathode Follower
  219. Tube Tester Data
  220. noob pre/pwer amp recording ?s
  221. Anyone heard of "in-rush" limiter resistor
  222. Will adding a 10H/125mA choke hurt bass performance
  223. Fixed bias vs. auto bias
  224. Not your average output transformer problem
  225. Balanced Audio Technology VK 3i preamplifier
  226. Musical Fidelity X10-D - changing tubes problem
  227. power transformers in series
  228. Loud sudden rumbling when turn on amp
  229. Help with tube amplification?
  230. UTC CG-431 Terminal Arrangement
  231. Mingda MC34B tweaks
  232. Symphonic Line Die Erleuchtung Reference
  233. 6SL7 Diffamp front end
  234. PT/OPT Orientation questions
  235. Effect of using 50k pot instead of 100k pot in tube preamp?
  236. Using the Crowhurst articles and Claus Byrith
  237. 12SX7
  238. Bridge SE amplifier
  239. Cad Sw
  240. Kit amps in the UK
  241. ECC82 based preamp
  242. How important is the coupling cap?
  243. pentode driven 300b set amp - any info?
  244. Circlotron Preamp with ECC88.
  245. Removing tone controls - Need a little help
  246. SE EL84 amplifier schematics
  247. Output coupling - Choke-coil method?
  248. 7788 tube mic preamp design
  249. Amperex 6085 Tube- Where to Buy?
  250. Can a 5687 drive four 813's in triode mode ?

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