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  1. Question about Melody KT88 amp
  2. Trafomatic Transformer
  3. Diode trick?
  4. Return of the vacuum tube sonic hologram generator
  5. 6V6 ->EL84 with 12AT7?
  6. design for 6336A OTL amp needed
  7. Aikido sound?
  8. Valve preamp
  9. GAS VR Tubes on B+
  10. Measuring Triode-Connected Pentode Curves
  11. 6L6, 12L6 not same tube!
  12. equivilent part numbers for 6K35HF
  13. Is this a start or run cap
  14. 6V6 PP under construction - pics
  15. Is this practical
  16. Idea for a 2 tube 6080 PP amp.
  17. pls tell where to buy core of transformer
  18. 300B amp PS optimization?
  19. Different value for .47uf coupling cap
  20. Old Olympic audio tube amp
  21. What Design to Use?
  22. KT90's anyone using'em ?
  23. What are they?
  24. Replace el34 with 6p3s
  25. Advice on 6V6 push pull Parallel
  26. squealing output transformer
  27. Melos Sha Gold
  28. Ways to Lower B+ in a Tube Rectifed PS
  29. Oregon Electronics D6 HV supplies: info needed please
  30. My version of the Vacuum State FVP5
  31. Diy Tube Phono Preamp
  32. double check the math
  33. Kitparts line stage
  34. Aikido tube heater floating
  35. Cathode and other types of feedback
  36. Tube God TH-1 Amp Regulator PCB ????
  37. step-up travel transformer for small preamp?
  38. Help a total tube amp newbie find a super simple design...
  39. heretical unity gain and ccs question
  40. Vox tubes glowing red hot
  41. What To Do
  42. Parallel Two Tubes
  43. 4 x PSE EL34
  44. EL34 CCS help
  45. Tube curve tracer project
  46. Single Ended EL-34?
  47. maxi tube tester?
  48. Zener Bias
  49. Looking to build a tube amp.
  50. Tube humming question
  51. YAPPAP (Yet Another Push-Pull Amplifier Project)
  52. voltage output dac ==> TUBE
  53. Heater switch transistor
  54. Anything post power transformer that can cause it to hum / buzz?
  55. Aikido enclosure
  56. Power Transformers. Decisions
  57. First tube after IV
  58. Suggestions for Upgrade - VDV70/100
  59. New Hybrid Output Stage and booster for SE Amp
  60. Pro and cons high DCR filter choke
  61. do-it yourself leslie help
  62. John Broskie Aikido boards
  63. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  64. Limited run PCBs - where's copyright???
  65. Hammond Amp Question
  66. Impedance matching
  67. 6111 output for CD player - opinions - some help?
  68. Sensitivity Limiter - Bogen Mx-30a
  69. Are my speakers efficient enough for tubes?
  70. Ping Sy: LED for Cathode Bias
  71. PSU capacitors/electrolytics
  72. 2A3 monoblock power supply
  73. 2 tube questions
  74. Just acquired HEATHKIT W4-AM-*picture*
  75. Passive line stage with tubes
  76. My favorite preamp
  77. Again, a preamp tube choice.
  78. Class Double A
  79. Two Stereo Tube Amps Into Monoblocks
  80. Multi-purpose tube amp (line and guitar inputs)
  81. Espey AM/FM radio (pentagrid mixer, etc.)
  82. Need help for DIY EL34PP tube amp
  83. Higher value oil capacitors?
  84. Transconductance.
  85. 5763 tetrode on OTL ?
  86. cornford harlequin
  87. Need help: 5687 tubes and heat dissipation
  88. Tube preamp, tone control problem
  89. Use 5KV transformer as output transformer?
  90. Any EL84 alternatives?
  91. help on id of tubes
  92. Sovtek 6CA7-EH Producing smoke...
  93. building V4's and phono pre
  94. pre out on a integrated tube amp?
  95. 6SN7 some good some bad
  96. Phono pre amp - thanks SY
  97. 6c33c Tube preamp
  98. Tubes for Lumley ST40 power amplifier?
  99. Plate supply of Conrad Johnson PV-5 ?
  100. 6CD6GA in Enhanced Triode Mode for SE Amp
  101. Fender 6G15 clone
  102. Gridstoppers against RF, a necessity ?
  103. where do I.E.T. tubes come from
  104. I wanna DIY a PP 6550 Guitar Setup
  105. Hum 300b Again
  106. Pse El34
  107. Mcintosh MR65 Tube Tuner
  108. Problem: Really Bright glowing 6CA7
  109. New member introduction & question
  110. The "PowerTotem"... a new way to SET?
  111. Please advice on KT88 Push Pull
  112. console "guitar amp" part 2
  113. Odd's n Ends Revisited 6V6 SE amp
  114. Bottlehead Foreplay with chipamp
  115. Next Amp: 2a3PSE, 300B or KT88SE UL
  116. transformer list
  117. do 300b amps really sound any good?
  118. Capacitance For Mono Block Design
  119. pilot 264
  120. Octal equivalents for 6C45?
  121. lm3875 chipamp and tube pre loud buzzing
  122. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  123. 32 ohm bass amp.
  124. PSE UL EL84 or 6V6 or EL34?
  125. Paraphase Splitter - why is it unpopular?
  126. Tubed IR spectrophotometer
  127. Very Basic 12AX7 Heater Question
  128. 6072A/12AY7 for an AKG C12 Microphone
  129. SET Suggestions
  130. Will ccs work with a DHT?
  131. Resistor type and power rating
  132. tube patents
  133. Why use E182CC?
  134. tube
  135. understanding transformer codes
  136. Maida regulator, these results expected?
  137. Moto chassis pulled! pics!
  138. glasshouse kit amps. Any good?
  139. class B
  140. a.r.t. mpa tube pre amp
  141. Upper and lower triode in E88CC
  142. Booster Amps
  143. Help on Magnavox Paraphase (Gabevee?)
  144. New stock pre -amp tubes. Whats good?
  145. CV2492 / 6922 / E88CC
  146. HK Citation II Bias "issues"
  147. 3k vs. 5k transformer for PP 2A3
  148. Turret terminal board for line stage construction?
  149. Tube Cage Question
  150. Small and easy ESL amp
  151. SOVTEK 6550WE's any good?
  152. power tube for drivers
  153. 12B4A line driver/preamp
  154. Question about tube amp power supply caps
  155. Why separate AC heater supplies for driver and power tubes?
  156. Using one half of double triode
  157. huh ?
  158. holy cow, this sounds nice
  159. my SY CCS is only giving me 15mA
  160. Changing filter cap in HH Scott
  161. Why Class AB is bad
  162. Problem, please help !!!!!!
  163. Eico hf-30 reworking
  164. KT88 Bias Adjustment
  165. Interstage Distortion Measurements
  166. Survey: Aikido distortion
  167. Loftin-White Mod
  168. Music Angel EL34
  169. How much filtering required for DC heaters?
  170. What is the best input/driver for 2A3 SE?
  171. tube kits....
  172. !2ax7 heater wiring? Series / parallel?
  173. Shunt regulator
  174. Trying to choose a project...
  175. Old Projector amp conversion project
  176. Experiences with TJ Mesh Plate DHT's
  177. The lost Millman Seely chapters on audio amps
  178. Individual fixed bias and transf coupling
  179. Transmitter e-tour
  180. 7984
  181. Screen driven EL36 / 6CM5 /PL36 /25E5
  182. Clone Marantz 7C power supply
  183. On - board supply ?
  184. Name that EL34!
  185. How much plate voltage for 6N1P's?
  186. minimalist valve pre for follower
  187. Schematic opinion needed (guitar amp)
  188. Tube availability: what would you do?
  189. Silvertone 1472 Makeover
  190. Looking for EL32 schematic
  191. oil bath cooling for tubes?
  192. Aikido Crackle Hiss Noise Solved
  193. Mini-p1 tweaks
  194. Refried Power Supply?
  195. The Edcor meets the 6AV5
  196. old console radio as guitar amp
  197. Anyone have curves for a 5HC7?
  198. Any common cathode (grounded grid) schematics?
  199. SIMPLE tube amplifier for...dummy guy...
  200. ground and earth
  201. Tube Cad Journal dead
  202. First amp
  203. 6922 direct coupled to 2A3
  204. Ok guys, get your daggers out.......
  205. How would you build a hybrid LM3xxx amp?
  206. Tade no tube amp!
  207. Sherwood 5500
  208. Most accurate way of matching triodes ?
  209. Help Identify This AMP!
  210. Old Tube Equipment Turnon
  211. Current Sourced Cathode Follower
  212. Tube Tester Data
  213. noob pre/pwer amp recording ?s
  214. Anyone heard of "in-rush" limiter resistor
  215. Will adding a 10H/125mA choke hurt bass performance
  216. Fixed bias vs. auto bias
  217. Not your average output transformer problem
  218. Balanced Audio Technology VK 3i preamplifier
  219. Musical Fidelity X10-D - changing tubes problem
  220. power transformers in series
  221. Loud sudden rumbling when turn on amp
  222. Help with tube amplification?
  223. UTC CG-431 Terminal Arrangement
  224. Mingda MC34B tweaks
  225. Symphonic Line Die Erleuchtung Reference
  226. 6SL7 Diffamp front end
  227. PT/OPT Orientation questions
  228. Effect of using 50k pot instead of 100k pot in tube preamp?
  229. Using the Crowhurst articles and Claus Byrith
  230. 12SX7
  231. Bridge SE amplifier
  232. Cad Sw
  233. Kit amps in the UK
  234. ECC82 based preamp
  235. How important is the coupling cap?
  236. any pcb layout for marshall standard 50w valve amp ?
  237. pentode driven 300b set amp - any info?
  238. Circlotron Preamp with ECC88.
  239. Removing tone controls - Need a little help
  240. SE EL84 amplifier schematics
  241. Output coupling - Choke-coil method?
  242. 7788 tube mic preamp design
  243. Amperex 6085 Tube- Where to Buy?
  244. Can a 5687 drive four 813's in triode mode ?
  245. Schematics needed for Heathkit S33
  246. Tube Sparking
  247. Vacuum Tube Pre O.C.L.
  248. Why no single triode OTL power stages?
  249. 6922 .2 sections in parallel
  250. Pre-amp input remote control

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