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  1. Help for pre-amp and two single-ended finals
  2. Schematic needed:MFA Magus B
  3. Can I remove the input caps?
  4. 807 vs. 1624 tetrode ?
  5. how to make tube amp sound layback and mellow?
  6. Standard tube filament voltages and currents
  7. SE 20W. What tube?
  8. 5687 Linestage behaving odd...
  9. SMPS & tube pre-amp development board.
  10. Question about Melody KT88 amp
  11. Trafomatic Transformer
  12. Diode trick?
  13. Return of the vacuum tube sonic hologram generator
  14. 6V6 ->EL84 with 12AT7?
  15. design for 6336A OTL amp needed
  16. Aikido sound?
  17. Valve preamp
  18. GAS VR Tubes on B+
  19. Measuring Triode-Connected Pentode Curves
  20. 6L6, 12L6 not same tube!
  21. equivilent part numbers for 6K35HF
  22. Is this a start or run cap
  23. 6V6 PP under construction - pics
  24. Is this practical
  25. Idea for a 2 tube 6080 PP amp.
  26. pls tell where to buy core of transformer
  27. 300B amp PS optimization?
  28. Different value for .47uf coupling cap
  29. Old Olympic audio tube amp
  30. What Design to Use?
  31. KT90's anyone using'em ?
  32. What are they?
  33. Replace el34 with 6p3s
  34. Advice on 6V6 push pull Parallel
  35. squealing output transformer
  36. Melos Sha Gold
  37. Ways to Lower B+ in a Tube Rectifed PS
  38. Oregon Electronics D6 HV supplies: info needed please
  39. My version of the Vacuum State FVP5
  40. Diy Tube Phono Preamp
  41. double check the math
  42. Kitparts line stage
  43. Aikido tube heater floating
  44. Cathode and other types of feedback
  45. Tube God TH-1 Amp Regulator PCB ????
  46. step-up travel transformer for small preamp?
  47. Help a total tube amp newbie find a super simple design...
  48. heretical unity gain and ccs question
  49. Vox tubes glowing red hot
  50. What To Do
  51. Parallel Two Tubes
  52. 4 x PSE EL34
  53. EL34 CCS help
  54. Tube curve tracer project
  55. Single Ended EL-34?
  56. maxi tube tester?
  57. Zener Bias
  58. Looking to build a tube amp.
  59. Tube humming question
  60. YAPPAP (Yet Another Push-Pull Amplifier Project)
  61. voltage output dac ==> TUBE
  62. Heater switch transistor
  63. Anything post power transformer that can cause it to hum / buzz?
  64. Aikido enclosure
  65. Power Transformers. Decisions
  66. First tube after IV
  67. Suggestions for Upgrade - VDV70/100
  68. New Hybrid Output Stage and booster for SE Amp
  69. Pro and cons high DCR filter choke
  70. do-it yourself leslie help
  71. John Broskie Aikido boards
  72. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  73. Limited run PCBs - where's copyright???
  74. Hammond Amp Question
  75. Impedance matching
  76. 6111 output for CD player - opinions - some help?
  77. Sensitivity Limiter - Bogen Mx-30a
  78. Are my speakers efficient enough for tubes?
  79. Ping Sy: LED for Cathode Bias
  80. PSU capacitors/electrolytics
  81. 2A3 monoblock power supply
  82. 2 tube questions
  83. Just acquired HEATHKIT W4-AM-*picture*
  84. Passive line stage with tubes
  85. My favorite preamp
  86. Again, a preamp tube choice.
  87. Class Double A
  88. Two Stereo Tube Amps Into Monoblocks
  89. Multi-purpose tube amp (line and guitar inputs)
  90. Espey AM/FM radio (pentagrid mixer, etc.)
  91. Need help for DIY EL34PP tube amp
  92. Higher value oil capacitors?
  93. Transconductance.
  94. 5763 tetrode on OTL ?
  95. cornford harlequin
  96. Need help: 5687 tubes and heat dissipation
  97. Tube preamp, tone control problem
  98. Use 5KV transformer as output transformer?
  99. Any EL84 alternatives?
  100. help on id of tubes
  101. Sovtek 6CA7-EH Producing smoke...
  102. building V4's and phono pre
  103. pre out on a integrated tube amp?
  104. 6SN7 some good some bad
  105. Phono pre amp - thanks SY
  106. 6c33c Tube preamp
  107. Tubes for Lumley ST40 power amplifier?
  108. Plate supply of Conrad Johnson PV-5 ?
  109. 6CD6GA in Enhanced Triode Mode for SE Amp
  110. Fender 6G15 clone
  111. Gridstoppers against RF, a necessity ?
  112. where do I.E.T. tubes come from
  113. I wanna DIY a PP 6550 Guitar Setup
  114. Hum 300b Again
  115. Pse El34
  116. Mcintosh MR65 Tube Tuner
  117. Problem: Really Bright glowing 6CA7
  118. New member introduction & question
  119. The "PowerTotem"... a new way to SET?
  120. Please advice on KT88 Push Pull
  121. console "guitar amp" part 2
  122. Odd's n Ends Revisited 6V6 SE amp
  123. Bottlehead Foreplay with chipamp
  124. Next Amp: 2a3PSE, 300B or KT88SE UL
  125. transformer list
  126. do 300b amps really sound any good?
  127. Capacitance For Mono Block Design
  128. pilot 264
  129. Octal equivalents for 6C45?
  130. lm3875 chipamp and tube pre loud buzzing
  131. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  132. 32 ohm bass amp.
  133. PSE UL EL84 or 6V6 or EL34?
  134. Paraphase Splitter - why is it unpopular?
  135. Tubed IR spectrophotometer
  136. Very Basic 12AX7 Heater Question
  137. 6072A/12AY7 for an AKG C12 Microphone
  138. SET Suggestions
  139. Will ccs work with a DHT?
  140. Resistor type and power rating
  141. tube patents
  142. Why use E182CC?
  143. tube
  144. understanding transformer codes
  145. Maida regulator, these results expected?
  146. Moto chassis pulled! pics!
  147. glasshouse kit amps. Any good?
  148. class B
  149. a.r.t. mpa tube pre amp
  150. Upper and lower triode in E88CC
  151. Booster Amps
  152. Help on Magnavox Paraphase (Gabevee?)
  153. New stock pre -amp tubes. Whats good?
  154. CV2492 / 6922 / E88CC
  155. HK Citation II Bias "issues"
  156. 3k vs. 5k transformer for PP 2A3
  157. Turret terminal board for line stage construction?
  158. Tube Cage Question
  159. Small and easy ESL amp
  160. SOVTEK 6550WE's any good?
  161. power tube for drivers
  162. 12B4A line driver/preamp
  163. Question about tube amp power supply caps
  164. Why separate AC heater supplies for driver and power tubes?
  165. Using one half of double triode
  166. huh ?
  167. holy cow, this sounds nice
  168. my SY CCS is only giving me 15mA
  169. Changing filter cap in HH Scott
  170. Why Class AB is bad
  171. Problem, please help !!!!!!
  172. Eico hf-30 reworking
  173. KT88 Bias Adjustment
  174. Interstage Distortion Measurements
  175. Survey: Aikido distortion
  176. Loftin-White Mod
  177. Music Angel EL34
  178. How much filtering required for DC heaters?
  179. What is the best input/driver for 2A3 SE?
  180. tube kits....
  181. !2ax7 heater wiring? Series / parallel?
  182. Shunt regulator
  183. Trying to choose a project...
  184. Old Projector amp conversion project
  185. Experiences with TJ Mesh Plate DHT's
  186. The lost Millman Seely chapters on audio amps
  187. Individual fixed bias and transf coupling
  188. Transmitter e-tour
  189. 7984
  190. Screen driven EL36 / 6CM5 /PL36 /25E5
  191. Clone Marantz 7C power supply
  192. On - board supply ?
  193. Name that EL34!
  194. How much plate voltage for 6N1P's?
  195. minimalist valve pre for follower
  196. Schematic opinion needed (guitar amp)
  197. Tube availability: what would you do?
  198. Silvertone 1472 Makeover
  199. Looking for EL32 schematic
  200. oil bath cooling for tubes?
  201. Aikido Crackle Hiss Noise Solved
  202. Mini-p1 tweaks
  203. Refried Power Supply?
  204. The Edcor meets the 6AV5
  205. old console radio as guitar amp
  206. Anyone have curves for a 5HC7?
  207. Any common cathode (grounded grid) schematics?
  208. SIMPLE tube amplifier for...dummy guy...
  209. ground and earth
  210. Tube Cad Journal dead
  211. First amp
  212. 6922 direct coupled to 2A3
  213. Ok guys, get your daggers out.......
  214. How would you build a hybrid LM3xxx amp?
  215. Tade no tube amp!
  216. Sherwood 5500
  217. Most accurate way of matching triodes ?
  218. Help Identify This AMP!
  219. Old Tube Equipment Turnon
  220. Current Sourced Cathode Follower
  221. Tube Tester Data
  222. noob pre/pwer amp recording ?s
  223. Anyone heard of "in-rush" limiter resistor
  224. Will adding a 10H/125mA choke hurt bass performance
  225. Fixed bias vs. auto bias
  226. Not your average output transformer problem
  227. Balanced Audio Technology VK 3i preamplifier
  228. Musical Fidelity X10-D - changing tubes problem
  229. power transformers in series
  230. Loud sudden rumbling when turn on amp
  231. Help with tube amplification?
  232. UTC CG-431 Terminal Arrangement
  233. Mingda MC34B tweaks
  234. Symphonic Line Die Erleuchtung Reference
  235. 6SL7 Diffamp front end
  236. PT/OPT Orientation questions
  237. Effect of using 50k pot instead of 100k pot in tube preamp?
  238. Using the Crowhurst articles and Claus Byrith
  239. 12SX7
  240. Bridge SE amplifier
  241. Cad Sw
  242. Kit amps in the UK
  243. ECC82 based preamp
  244. How important is the coupling cap?
  245. any pcb layout for marshall standard 50w valve amp ?
  246. pentode driven 300b set amp - any info?
  247. Circlotron Preamp with ECC88.
  248. Removing tone controls - Need a little help
  249. SE EL84 amplifier schematics
  250. Output coupling - Choke-coil method?