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  1. Aikido sound?
  2. Valve preamp
  3. GAS VR Tubes on B+
  4. Measuring Triode-Connected Pentode Curves
  5. 6L6, 12L6 not same tube!
  6. equivilent part numbers for 6K35HF
  7. Is this a start or run cap
  8. 6V6 PP under construction - pics
  9. Is this practical
  10. Idea for a 2 tube 6080 PP amp.
  11. pls tell where to buy core of transformer
  12. 300B amp PS optimization?
  13. Different value for .47uf coupling cap
  14. Old Olympic audio tube amp
  15. What Design to Use?
  16. KT90's anyone using'em ?
  17. What are they?
  18. Replace el34 with 6p3s
  19. Advice on 6V6 push pull Parallel
  20. squealing output transformer
  21. Melos Sha Gold
  22. Ways to Lower B+ in a Tube Rectifed PS
  23. Oregon Electronics D6 HV supplies: info needed please
  24. My version of the Vacuum State FVP5
  25. Diy Tube Phono Preamp
  26. double check the math
  27. Kitparts line stage
  28. Aikido tube heater floating
  29. Cathode and other types of feedback
  30. Tube God TH-1 Amp Regulator PCB ????
  31. step-up travel transformer for small preamp?
  32. Help a total tube amp newbie find a super simple design...
  33. heretical unity gain and ccs question
  34. Vox tubes glowing red hot
  35. What To Do
  36. Parallel Two Tubes
  37. 4 x PSE EL34
  38. EL34 CCS help
  39. Tube curve tracer project
  40. Single Ended EL-34?
  41. maxi tube tester?
  42. Zener Bias
  43. Looking to build a tube amp.
  44. Tube humming question
  45. YAPPAP (Yet Another Push-Pull Amplifier Project)
  46. voltage output dac ==> TUBE
  47. Heater switch transistor
  48. Anything post power transformer that can cause it to hum / buzz?
  49. Aikido enclosure
  50. Power Transformers. Decisions
  51. First tube after IV
  52. Suggestions for Upgrade - VDV70/100
  53. New Hybrid Output Stage and booster for SE Amp
  54. Pro and cons high DCR filter choke
  55. do-it yourself leslie help
  56. John Broskie Aikido boards
  57. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  58. Limited run PCBs - where's copyright???
  59. Hammond Amp Question
  60. Impedance matching
  61. 6111 output for CD player - opinions - some help?
  62. Sensitivity Limiter - Bogen Mx-30a
  63. Are my speakers efficient enough for tubes?
  64. Ping Sy: LED for Cathode Bias
  65. PSU capacitors/electrolytics
  66. 2A3 monoblock power supply
  67. 2 tube questions
  68. Just acquired HEATHKIT W4-AM-*picture*
  69. Passive line stage with tubes
  70. My favorite preamp
  71. Again, a preamp tube choice.
  72. Class Double A
  73. Two Stereo Tube Amps Into Monoblocks
  74. Multi-purpose tube amp (line and guitar inputs)
  75. Espey AM/FM radio (pentagrid mixer, etc.)
  76. Need help for DIY EL34PP tube amp
  77. Higher value oil capacitors?
  78. Transconductance.
  79. 5763 tetrode on OTL ?
  80. cornford harlequin
  81. Need help: 5687 tubes and heat dissipation
  82. Tube preamp, tone control problem
  83. Use 5KV transformer as output transformer?
  84. Any EL84 alternatives?
  85. help on id of tubes
  86. Sovtek 6CA7-EH Producing smoke...
  87. building V4's and phono pre
  88. pre out on a integrated tube amp?
  89. 6SN7 some good some bad
  90. Phono pre amp - thanks SY
  91. 6c33c Tube preamp
  92. Tubes for Lumley ST40 power amplifier?
  93. Plate supply of Conrad Johnson PV-5 ?
  94. 6CD6GA in Enhanced Triode Mode for SE Amp
  95. Fender 6G15 clone
  96. Gridstoppers against RF, a necessity ?
  97. where do I.E.T. tubes come from
  98. I wanna DIY a PP 6550 Guitar Setup
  99. Hum 300b Again
  100. Pse El34
  101. Mcintosh MR65 Tube Tuner
  102. Problem: Really Bright glowing 6CA7
  103. New member introduction & question
  104. The "PowerTotem"... a new way to SET?
  105. Please advice on KT88 Push Pull
  106. console "guitar amp" part 2
  107. Odd's n Ends Revisited 6V6 SE amp
  108. Bottlehead Foreplay with chipamp
  109. Next Amp: 2a3PSE, 300B or KT88SE UL
  110. transformer list
  111. do 300b amps really sound any good?
  112. Capacitance For Mono Block Design
  113. pilot 264
  114. Octal equivalents for 6C45?
  115. lm3875 chipamp and tube pre loud buzzing
  116. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  117. 32 ohm bass amp.
  118. PSE UL EL84 or 6V6 or EL34?
  119. Paraphase Splitter - why is it unpopular?
  120. Tubed IR spectrophotometer
  121. Very Basic 12AX7 Heater Question
  122. 6072A/12AY7 for an AKG C12 Microphone
  123. SET Suggestions
  124. Will ccs work with a DHT?
  125. Resistor type and power rating
  126. tube patents
  127. Why use E182CC?
  128. tube
  129. understanding transformer codes
  130. Maida regulator, these results expected?
  131. Moto chassis pulled! pics!
  132. glasshouse kit amps. Any good?
  133. class B
  134. a.r.t. mpa tube pre amp
  135. Upper and lower triode in E88CC
  136. Booster Amps
  137. Help on Magnavox Paraphase (Gabevee?)
  138. New stock pre -amp tubes. Whats good?
  139. CV2492 / 6922 / E88CC
  140. HK Citation II Bias "issues"
  141. 3k vs. 5k transformer for PP 2A3
  142. Turret terminal board for line stage construction?
  143. Tube Cage Question
  144. Small and easy ESL amp
  145. SOVTEK 6550WE's any good?
  146. power tube for drivers
  147. 12B4A line driver/preamp
  148. Question about tube amp power supply caps
  149. Why separate AC heater supplies for driver and power tubes?
  150. Using one half of double triode
  151. huh ?
  152. holy cow, this sounds nice
  153. my SY CCS is only giving me 15mA
  154. Changing filter cap in HH Scott
  155. Why Class AB is bad
  156. Problem, please help !!!!!!
  157. Eico hf-30 reworking
  158. KT88 Bias Adjustment
  159. Interstage Distortion Measurements
  160. Survey: Aikido distortion
  161. Loftin-White Mod
  162. Music Angel EL34
  163. How much filtering required for DC heaters?
  164. What is the best input/driver for 2A3 SE?
  165. tube kits....
  166. !2ax7 heater wiring? Series / parallel?
  167. Shunt regulator
  168. Trying to choose a project...
  169. Old Projector amp conversion project
  170. Experiences with TJ Mesh Plate DHT's
  171. The lost Millman Seely chapters on audio amps
  172. Individual fixed bias and transf coupling
  173. Transmitter e-tour
  174. 7984
  175. Screen driven EL36 / 6CM5 /PL36 /25E5
  176. Clone Marantz 7C power supply
  177. On - board supply ?
  178. Name that EL34!
  179. How much plate voltage for 6N1P's?
  180. minimalist valve pre for follower
  181. Schematic opinion needed (guitar amp)
  182. Tube availability: what would you do?
  183. Silvertone 1472 Makeover
  184. Looking for EL32 schematic
  185. oil bath cooling for tubes?
  186. Aikido Crackle Hiss Noise Solved
  187. Mini-p1 tweaks
  188. Refried Power Supply?
  189. The Edcor meets the 6AV5
  190. old console radio as guitar amp
  191. Anyone have curves for a 5HC7?
  192. Any common cathode (grounded grid) schematics?
  193. SIMPLE tube amplifier for...dummy guy...
  194. ground and earth
  195. Tube Cad Journal dead
  196. First amp
  197. 6922 direct coupled to 2A3
  198. Ok guys, get your daggers out.......
  199. How would you build a hybrid LM3xxx amp?
  200. Tade no tube amp!
  201. Sherwood 5500
  202. Most accurate way of matching triodes ?
  203. Help Identify This AMP!
  204. Old Tube Equipment Turnon
  205. Current Sourced Cathode Follower
  206. Tube Tester Data
  207. noob pre/pwer amp recording ?s
  208. Anyone heard of "in-rush" limiter resistor
  209. Will adding a 10H/125mA choke hurt bass performance
  210. Fixed bias vs. auto bias
  211. Not your average output transformer problem
  212. Balanced Audio Technology VK 3i preamplifier
  213. Musical Fidelity X10-D - changing tubes problem
  214. power transformers in series
  215. Loud sudden rumbling when turn on amp
  216. Help with tube amplification?
  217. UTC CG-431 Terminal Arrangement
  218. Mingda MC34B tweaks
  219. Symphonic Line Die Erleuchtung Reference
  220. 6SL7 Diffamp front end
  221. PT/OPT Orientation questions
  222. Effect of using 50k pot instead of 100k pot in tube preamp?
  223. Using the Crowhurst articles and Claus Byrith
  224. 12SX7
  225. Bridge SE amplifier
  226. Cad Sw
  227. Kit amps in the UK
  228. ECC82 based preamp
  229. How important is the coupling cap?
  230. any pcb layout for marshall standard 50w valve amp ?
  231. pentode driven 300b set amp - any info?
  232. Circlotron Preamp with ECC88.
  233. Removing tone controls - Need a little help
  234. SE EL84 amplifier schematics
  235. Output coupling - Choke-coil method?
  236. 7788 tube mic preamp design
  237. Amperex 6085 Tube- Where to Buy?
  238. Can a 5687 drive four 813's in triode mode ?
  239. Schematics needed for Heathkit S33
  240. Tube Sparking
  241. Vacuum Tube Pre O.C.L.
  242. Why no single triode OTL power stages?
  243. 6922 .2 sections in parallel
  244. Pre-amp input remote control
  245. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  246. Relpacing 6EU7s with 12AX7s - Good idea?
  247. These Valves good for anything?
  248. buzz problem
  249. Help with trafo
  250. Svetlana EL509 III tubes