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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. Vox tubes glowing red hot
  48. What To Do
  49. Parallel Two Tubes
  50. 4 x PSE EL34
  51. EL34 CCS help
  52. Tube curve tracer project
  53. Single Ended EL-34?
  54. maxi tube tester?
  55. Zener Bias
  56. Looking to build a tube amp.
  57. Tube humming question
  58. YAPPAP (Yet Another Push-Pull Amplifier Project)
  59. voltage output dac ==> TUBE
  60. Heater switch transistor
  61. Anything post power transformer that can cause it to hum / buzz?
  62. Aikido enclosure
  63. Power Transformers. Decisions
  64. First tube after IV
  65. Suggestions for Upgrade - VDV70/100
  66. New Hybrid Output Stage and booster for SE Amp
  67. Pro and cons high DCR filter choke
  68. do-it yourself leslie help
  69. John Broskie Aikido boards
  70. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  71. Limited run PCBs - where's copyright???
  72. Hammond Amp Question
  73. Impedance matching
  74. 6111 output for CD player - opinions - some help?
  75. Sensitivity Limiter - Bogen Mx-30a
  76. Are my speakers efficient enough for tubes?
  77. Ping Sy: LED for Cathode Bias
  78. PSU capacitors/electrolytics
  79. 2A3 monoblock power supply
  80. 2 tube questions
  81. Just acquired HEATHKIT W4-AM-*picture*
  82. Passive line stage with tubes
  83. My favorite preamp
  84. Again, a preamp tube choice.
  85. Class Double A
  86. Two Stereo Tube Amps Into Monoblocks
  87. Multi-purpose tube amp (line and guitar inputs)
  88. Espey AM/FM radio (pentagrid mixer, etc.)
  89. Need help for DIY EL34PP tube amp
  90. Higher value oil capacitors?
  91. Transconductance.
  92. 5763 tetrode on OTL ?
  93. cornford harlequin
  94. Need help: 5687 tubes and heat dissipation
  95. Tube preamp, tone control problem
  96. Use 5KV transformer as output transformer?
  97. Any EL84 alternatives?
  98. help on id of tubes
  99. Sovtek 6CA7-EH Producing smoke...
  100. building V4's and phono pre
  101. pre out on a integrated tube amp?
  102. 6SN7 some good some bad
  103. Phono pre amp - thanks SY
  104. 6c33c Tube preamp
  105. Tubes for Lumley ST40 power amplifier?
  106. Plate supply of Conrad Johnson PV-5 ?
  107. 6CD6GA in Enhanced Triode Mode for SE Amp
  108. Fender 6G15 clone
  109. Gridstoppers against RF, a necessity ?
  110. where do I.E.T. tubes come from
  111. I wanna DIY a PP 6550 Guitar Setup
  112. Hum 300b Again
  113. Pse El34
  114. Mcintosh MR65 Tube Tuner
  115. Problem: Really Bright glowing 6CA7
  116. New member introduction & question
  117. The "PowerTotem"... a new way to SET?
  118. Please advice on KT88 Push Pull
  119. console "guitar amp" part 2
  120. Odd's n Ends Revisited 6V6 SE amp
  121. Bottlehead Foreplay with chipamp
  122. Next Amp: 2a3PSE, 300B or KT88SE UL
  123. transformer list
  124. do 300b amps really sound any good?
  125. Capacitance For Mono Block Design
  126. pilot 264
  127. Octal equivalents for 6C45?
  128. lm3875 chipamp and tube pre loud buzzing
  129. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  130. 32 ohm bass amp.
  131. PSE UL EL84 or 6V6 or EL34?
  132. Paraphase Splitter - why is it unpopular?
  133. Tubed IR spectrophotometer
  134. Very Basic 12AX7 Heater Question
  135. 6072A/12AY7 for an AKG C12 Microphone
  136. SET Suggestions
  137. Will ccs work with a DHT?
  138. Resistor type and power rating
  139. tube patents
  140. Why use E182CC?
  141. tube
  142. understanding transformer codes
  143. Maida regulator, these results expected?
  144. Moto chassis pulled! pics!
  145. glasshouse kit amps. Any good?
  146. class B
  147. a.r.t. mpa tube pre amp
  148. Upper and lower triode in E88CC
  149. Booster Amps
  150. Help on Magnavox Paraphase (Gabevee?)
  151. New stock pre -amp tubes. Whats good?
  152. CV2492 / 6922 / E88CC
  153. HK Citation II Bias "issues"
  154. 3k vs. 5k transformer for PP 2A3
  155. Turret terminal board for line stage construction?
  156. Tube Cage Question
  157. Small and easy ESL amp
  158. SOVTEK 6550WE's any good?
  159. power tube for drivers
  160. 12B4A line driver/preamp
  161. Question about tube amp power supply caps
  162. Why separate AC heater supplies for driver and power tubes?
  163. Using one half of double triode
  164. huh ?
  165. holy cow, this sounds nice
  166. my SY CCS is only giving me 15mA
  167. Changing filter cap in HH Scott
  168. Why Class AB is bad
  169. Problem, please help !!!!!!
  170. Eico hf-30 reworking
  171. KT88 Bias Adjustment
  172. Interstage Distortion Measurements
  173. Survey: Aikido distortion
  174. Loftin-White Mod
  175. Music Angel EL34
  176. How much filtering required for DC heaters?
  177. What is the best input/driver for 2A3 SE?
  178. tube kits....
  179. !2ax7 heater wiring? Series / parallel?
  180. Shunt regulator
  181. Trying to choose a project...
  182. Old Projector amp conversion project
  183. Experiences with TJ Mesh Plate DHT's
  184. The lost Millman Seely chapters on audio amps
  185. Individual fixed bias and transf coupling
  186. Transmitter e-tour
  187. 7984
  188. Screen driven EL36 / 6CM5 /PL36 /25E5
  189. Clone Marantz 7C power supply
  190. On - board supply ?
  191. Name that EL34!
  192. How much plate voltage for 6N1P's?
  193. minimalist valve pre for follower
  194. Schematic opinion needed (guitar amp)
  195. Tube availability: what would you do?
  196. Silvertone 1472 Makeover
  197. Looking for EL32 schematic
  198. oil bath cooling for tubes?
  199. Aikido Crackle Hiss Noise Solved
  200. Mini-p1 tweaks
  201. Refried Power Supply?
  202. The Edcor meets the 6AV5
  203. old console radio as guitar amp
  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. any pcb layout for marshall standard 50w valve amp ?
  244. pentode driven 300b set amp - any info?
  245. Circlotron Preamp with ECC88.
  246. Removing tone controls - Need a little help
  247. SE EL84 amplifier schematics
  248. Output coupling - Choke-coil method?
  249. 7788 tube mic preamp design
  250. Amperex 6085 Tube- Where to Buy?

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