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  1. Can I remove the input caps?
  2. 807 vs. 1624 tetrode ?
  3. how to make tube amp sound layback and mellow?
  4. Standard tube filament voltages and currents
  5. SE 20W. What tube?
  6. 5687 Linestage behaving odd...
  7. SMPS & tube pre-amp development board.
  8. Question about Melody KT88 amp
  9. Trafomatic Transformer
  10. Diode trick?
  11. Return of the vacuum tube sonic hologram generator
  12. 6V6 ->EL84 with 12AT7?
  13. design for 6336A OTL amp needed
  14. Aikido sound?
  15. Valve preamp
  16. GAS VR Tubes on B+
  17. Measuring Triode-Connected Pentode Curves
  18. 6L6, 12L6 not same tube!
  19. equivilent part numbers for 6K35HF
  20. Is this a start or run cap
  21. 6V6 PP under construction - pics
  22. Is this practical
  23. Idea for a 2 tube 6080 PP amp.
  24. pls tell where to buy core of transformer
  25. 300B amp PS optimization?
  26. Different value for .47uf coupling cap
  27. Old Olympic audio tube amp
  28. What Design to Use?
  29. KT90's anyone using'em ?
  30. What are they?
  31. Replace el34 with 6p3s
  32. Advice on 6V6 push pull Parallel
  33. squealing output transformer
  34. Melos Sha Gold
  35. Ways to Lower B+ in a Tube Rectifed PS
  36. Oregon Electronics D6 HV supplies: info needed please
  37. My version of the Vacuum State FVP5
  38. Diy Tube Phono Preamp
  39. double check the math
  40. Kitparts line stage
  41. Aikido tube heater floating
  42. Cathode and other types of feedback
  43. Tube God TH-1 Amp Regulator PCB ????
  44. step-up travel transformer for small preamp?
  45. Help a total tube amp newbie find a super simple design...
  46. heretical unity gain and ccs question
  47. What To Do
  48. Parallel Two Tubes
  49. 4 x PSE EL34
  50. EL34 CCS help
  51. Tube curve tracer project
  52. Single Ended EL-34?
  53. maxi tube tester?
  54. Zener Bias
  55. Looking to build a tube amp.
  56. Tube humming question
  57. YAPPAP (Yet Another Push-Pull Amplifier Project)
  58. voltage output dac ==> TUBE
  59. Heater switch transistor
  60. Anything post power transformer that can cause it to hum / buzz?
  61. Aikido enclosure
  62. Power Transformers. Decisions
  63. First tube after IV
  64. Suggestions for Upgrade - VDV70/100
  65. New Hybrid Output Stage and booster for SE Amp
  66. Pro and cons high DCR filter choke
  67. do-it yourself leslie help
  68. John Broskie Aikido boards
  69. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  70. Limited run PCBs - where's copyright???
  71. Hammond Amp Question
  72. Impedance matching
  73. 6111 output for CD player - opinions - some help?
  74. Sensitivity Limiter - Bogen Mx-30a
  75. Are my speakers efficient enough for tubes?
  76. Ping Sy: LED for Cathode Bias
  77. PSU capacitors/electrolytics
  78. 2A3 monoblock power supply
  79. 2 tube questions
  80. Just acquired HEATHKIT W4-AM-*picture*
  81. Passive line stage with tubes
  82. My favorite preamp
  83. Again, a preamp tube choice.
  84. Class Double A
  85. Two Stereo Tube Amps Into Monoblocks
  86. Espey AM/FM radio (pentagrid mixer, etc.)
  87. Need help for DIY EL34PP tube amp
  88. Higher value oil capacitors?
  89. Transconductance.
  90. 5763 tetrode on OTL ?
  91. cornford harlequin
  92. Need help: 5687 tubes and heat dissipation
  93. Tube preamp, tone control problem
  94. Use 5KV transformer as output transformer?
  95. Any EL84 alternatives?
  96. help on id of tubes
  97. Sovtek 6CA7-EH Producing smoke...
  98. building V4's and phono pre
  99. pre out on a integrated tube amp?
  100. 6SN7 some good some bad
  101. Phono pre amp - thanks SY
  102. 6c33c Tube preamp
  103. Tubes for Lumley ST40 power amplifier?
  104. Plate supply of Conrad Johnson PV-5 ?
  105. 6CD6GA in Enhanced Triode Mode for SE Amp
  106. Gridstoppers against RF, a necessity ?
  107. where do I.E.T. tubes come from
  108. Hum 300b Again
  109. Pse El34
  110. Mcintosh MR65 Tube Tuner
  111. Problem: Really Bright glowing 6CA7
  112. New member introduction & question
  113. The "PowerTotem"... a new way to SET?
  114. Please advice on KT88 Push Pull
  115. Odd's n Ends Revisited 6V6 SE amp
  116. Bottlehead Foreplay with chipamp
  117. Next Amp: 2a3PSE, 300B or KT88SE UL
  118. transformer list
  119. do 300b amps really sound any good?
  120. Capacitance For Mono Block Design
  121. pilot 264
  122. Octal equivalents for 6C45?
  123. lm3875 chipamp and tube pre loud buzzing
  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. 12AX7 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. Tube availability: what would you do?
  188. Looking for EL32 schematic
  189. oil bath cooling for tubes?
  190. Aikido Crackle Hiss Noise Solved
  191. Mini-p1 tweaks
  192. Refried Power Supply?
  193. The Edcor meets the 6AV5
  194. Anyone have curves for a 5HC7?
  195. Any common cathode (grounded grid) schematics?
  196. SIMPLE tube amplifier for...dummy guy...
  197. ground and earth
  198. Tube Cad Journal dead
  199. First amp
  200. 6922 direct coupled to 2A3
  201. Ok guys, get your daggers out.......
  202. How would you build a hybrid LM3xxx amp?
  203. Tade no tube amp!
  204. Sherwood 5500
  205. Most accurate way of matching triodes ?
  206. Help Identify This AMP!
  207. Old Tube Equipment Turnon
  208. Current Sourced Cathode Follower
  209. Tube Tester Data
  210. noob pre/pwer amp recording ?s
  211. Anyone heard of "in-rush" limiter resistor
  212. Will adding a 10H/125mA choke hurt bass performance
  213. Fixed bias vs. auto bias
  214. Not your average output transformer problem
  215. Balanced Audio Technology VK 3i preamplifier
  216. Musical Fidelity X10-D - changing tubes problem
  217. power transformers in series
  218. Loud sudden rumbling when turn on amp
  219. Help with tube amplification?
  220. UTC CG-431 Terminal Arrangement
  221. Mingda MC34B tweaks
  222. Symphonic Line Die Erleuchtung Reference
  223. 6SL7 Diffamp front end
  224. PT/OPT Orientation questions
  225. Effect of using 50k pot instead of 100k pot in tube preamp?
  226. Using the Crowhurst articles and Claus Byrith
  227. 12SX7
  228. Bridge SE amplifier
  229. Cad Sw
  230. Kit amps in the UK
  231. ECC82 based preamp
  232. How important is the coupling cap?
  233. pentode driven 300b set amp - any info?
  234. Circlotron Preamp with ECC88.
  235. Removing tone controls - Need a little help
  236. SE EL84 amplifier schematics
  237. Output coupling - Choke-coil method?
  238. 7788 tube mic preamp design
  239. Amperex 6085 Tube- Where to Buy?
  240. Can a 5687 drive four 813's in triode mode ?
  241. Schematics needed for Heathkit S33
  242. Tube Sparking
  243. Vacuum Tube Pre O.C.L.
  244. Why no single triode OTL power stages?
  245. 6922 .2 sections in parallel
  246. Pre-amp input remote control
  247. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  248. Relpacing 6EU7s with 12AX7s - Good idea?
  249. These Valves good for anything?
  250. buzz problem

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