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  1. Replace el34 with 6p3s
  2. Advice on 6V6 push pull Parallel
  3. squealing output transformer
  4. Melos Sha Gold
  5. Ways to Lower B+ in a Tube Rectifed PS
  6. Oregon Electronics D6 HV supplies: info needed please
  7. My version of the Vacuum State FVP5
  8. Diy Tube Phono Preamp
  9. double check the math
  10. Kitparts line stage
  11. Aikido tube heater floating
  12. Cathode and other types of feedback
  13. Tube God TH-1 Amp Regulator PCB ????
  14. step-up travel transformer for small preamp?
  15. Help a total tube amp newbie find a super simple design...
  16. heretical unity gain and ccs question
  17. Vox tubes glowing red hot
  18. What To Do
  19. Parallel Two Tubes
  20. 4 x PSE EL34
  21. EL34 CCS help
  22. Tube curve tracer project
  23. Single Ended EL-34?
  24. maxi tube tester?
  25. Zener Bias
  26. Looking to build a tube amp.
  27. Tube humming question
  28. YAPPAP (Yet Another Push-Pull Amplifier Project)
  29. voltage output dac ==> TUBE
  30. Heater switch transistor
  31. Anything post power transformer that can cause it to hum / buzz?
  32. Aikido enclosure
  33. Power Transformers. Decisions
  34. First tube after IV
  35. Suggestions for Upgrade - VDV70/100
  36. New Hybrid Output Stage and booster for SE Amp
  37. Pro and cons high DCR filter choke
  38. do-it yourself leslie help
  39. John Broskie Aikido boards
  40. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  41. Limited run PCBs - where's copyright???
  42. Hammond Amp Question
  43. Impedance matching
  44. 6111 output for CD player - opinions - some help?
  45. Sensitivity Limiter - Bogen Mx-30a
  46. Are my speakers efficient enough for tubes?
  47. Ping Sy: LED for Cathode Bias
  48. PSU capacitors/electrolytics
  49. 2A3 monoblock power supply
  50. 2 tube questions
  51. Just acquired HEATHKIT W4-AM-*picture*
  52. Passive line stage with tubes
  53. My favorite preamp
  54. Again, a preamp tube choice.
  55. Class Double A
  56. Two Stereo Tube Amps Into Monoblocks
  57. Multi-purpose tube amp (line and guitar inputs)
  58. Espey AM/FM radio (pentagrid mixer, etc.)
  59. Need help for DIY EL34PP tube amp
  60. Higher value oil capacitors?
  61. Transconductance.
  62. 5763 tetrode on OTL ?
  63. cornford harlequin
  64. Need help: 5687 tubes and heat dissipation
  65. Tube preamp, tone control problem
  66. Use 5KV transformer as output transformer?
  67. Any EL84 alternatives?
  68. help on id of tubes
  69. Sovtek 6CA7-EH Producing smoke...
  70. building V4's and phono pre
  71. pre out on a integrated tube amp?
  72. 6SN7 some good some bad
  73. Phono pre amp - thanks SY
  74. 6c33c Tube preamp
  75. Tubes for Lumley ST40 power amplifier?
  76. Plate supply of Conrad Johnson PV-5 ?
  77. 6CD6GA in Enhanced Triode Mode for SE Amp
  78. Fender 6G15 clone
  79. Gridstoppers against RF, a necessity ?
  80. where do I.E.T. tubes come from
  81. I wanna DIY a PP 6550 Guitar Setup
  82. Hum 300b Again
  83. Pse El34
  84. Mcintosh MR65 Tube Tuner
  85. Problem: Really Bright glowing 6CA7
  86. New member introduction & question
  87. The "PowerTotem"... a new way to SET?
  88. Please advice on KT88 Push Pull
  89. console "guitar amp" part 2
  90. Odd's n Ends Revisited 6V6 SE amp
  91. Bottlehead Foreplay with chipamp
  92. Next Amp: 2a3PSE, 300B or KT88SE UL
  93. transformer list
  94. do 300b amps really sound any good?
  95. Capacitance For Mono Block Design
  96. pilot 264
  97. Octal equivalents for 6C45?
  98. lm3875 chipamp and tube pre loud buzzing
  99. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  100. 32 ohm bass amp.
  101. PSE UL EL84 or 6V6 or EL34?
  102. Paraphase Splitter - why is it unpopular?
  103. Tubed IR spectrophotometer
  104. Very Basic 12AX7 Heater Question
  105. 6072A/12AY7 for an AKG C12 Microphone
  106. SET Suggestions
  107. Will ccs work with a DHT?
  108. Resistor type and power rating
  109. tube patents
  110. Why use E182CC?
  111. tube
  112. understanding transformer codes
  113. Maida regulator, these results expected?
  114. Moto chassis pulled! pics!
  115. glasshouse kit amps. Any good?
  116. class B
  117. a.r.t. mpa tube pre amp
  118. Upper and lower triode in E88CC
  119. Booster Amps
  120. Help on Magnavox Paraphase (Gabevee?)
  121. New stock pre -amp tubes. Whats good?
  122. CV2492 / 6922 / E88CC
  123. HK Citation II Bias "issues"
  124. 3k vs. 5k transformer for PP 2A3
  125. Turret terminal board for line stage construction?
  126. Tube Cage Question
  127. Small and easy ESL amp
  128. SOVTEK 6550WE's any good?
  129. power tube for drivers
  130. 12B4A line driver/preamp
  131. Question about tube amp power supply caps
  132. Why separate AC heater supplies for driver and power tubes?
  133. Using one half of double triode
  134. huh ?
  135. holy cow, this sounds nice
  136. my SY CCS is only giving me 15mA
  137. Changing filter cap in HH Scott
  138. Why Class AB is bad
  139. Problem, please help !!!!!!
  140. Eico hf-30 reworking
  141. KT88 Bias Adjustment
  142. Interstage Distortion Measurements
  143. Survey: Aikido distortion
  144. Loftin-White Mod
  145. Music Angel EL34
  146. How much filtering required for DC heaters?
  147. What is the best input/driver for 2A3 SE?
  148. tube kits....
  149. !2ax7 heater wiring? Series / parallel?
  150. Shunt regulator
  151. Trying to choose a project...
  152. Old Projector amp conversion project
  153. Experiences with TJ Mesh Plate DHT's
  154. The lost Millman Seely chapters on audio amps
  155. Individual fixed bias and transf coupling
  156. Transmitter e-tour
  157. 7984
  158. Screen driven EL36 / 6CM5 /PL36 /25E5
  159. Clone Marantz 7C power supply
  160. On - board supply ?
  161. Name that EL34!
  162. How much plate voltage for 6N1P's?
  163. minimalist valve pre for follower
  164. Schematic opinion needed (guitar amp)
  165. Tube availability: what would you do?
  166. Silvertone 1472 Makeover
  167. Looking for EL32 schematic
  168. oil bath cooling for tubes?
  169. Aikido Crackle Hiss Noise Solved
  170. Mini-p1 tweaks
  171. Refried Power Supply?
  172. The Edcor meets the 6AV5
  173. old console radio as guitar amp
  174. Anyone have curves for a 5HC7?
  175. Any common cathode (grounded grid) schematics?
  176. SIMPLE tube amplifier for...dummy guy...
  177. ground and earth
  178. Tube Cad Journal dead
  179. First amp
  180. 6922 direct coupled to 2A3
  181. Ok guys, get your daggers out.......
  182. How would you build a hybrid LM3xxx amp?
  183. Tade no tube amp!
  184. Sherwood 5500
  185. Most accurate way of matching triodes ?
  186. Help Identify This AMP!
  187. Old Tube Equipment Turnon
  188. Current Sourced Cathode Follower
  189. Tube Tester Data
  190. noob pre/pwer amp recording ?s
  191. Anyone heard of "in-rush" limiter resistor
  192. Will adding a 10H/125mA choke hurt bass performance
  193. Fixed bias vs. auto bias
  194. Not your average output transformer problem
  195. Balanced Audio Technology VK 3i preamplifier
  196. Musical Fidelity X10-D - changing tubes problem
  197. power transformers in series
  198. Loud sudden rumbling when turn on amp
  199. Help with tube amplification?
  200. UTC CG-431 Terminal Arrangement
  201. Mingda MC34B tweaks
  202. Symphonic Line Die Erleuchtung Reference
  203. 6SL7 Diffamp front end
  204. PT/OPT Orientation questions
  205. Effect of using 50k pot instead of 100k pot in tube preamp?
  206. Using the Crowhurst articles and Claus Byrith
  207. 12SX7
  208. Bridge SE amplifier
  209. Cad Sw
  210. Kit amps in the UK
  211. ECC82 based preamp
  212. How important is the coupling cap?
  213. any pcb layout for marshall standard 50w valve amp ?
  214. pentode driven 300b set amp - any info?
  215. Circlotron Preamp with ECC88.
  216. Removing tone controls - Need a little help
  217. SE EL84 amplifier schematics
  218. Output coupling - Choke-coil method?
  219. 7788 tube mic preamp design
  220. Amperex 6085 Tube- Where to Buy?
  221. Can a 5687 drive four 813's in triode mode ?
  222. Schematics needed for Heathkit S33
  223. Tube Sparking
  224. Vacuum Tube Pre O.C.L.
  225. Why no single triode OTL power stages?
  226. 6922 .2 sections in parallel
  227. Pre-amp input remote control
  228. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  229. Relpacing 6EU7s with 12AX7s - Good idea?
  230. These Valves good for anything?
  231. buzz problem
  232. Help with trafo
  233. Svetlana EL509 III tubes
  234. Noise on Aikido output
  235. Book “Single Ended Amplifiers” by John (not Gordon) Rankin
  236. EV4417 6CM5 (6x) P-P Amp Schematic
  237. Need recommendation for cathode bypass cap
  238. Simplest flea-powered amp?
  239. Decisions, Decisions - Help me select iron
  240. 966 mercury vapor rectifier
  241. Sound Practices CDs
  242. Question about DIY EL34PP amp
  243. noisy noisy noisy noisy noisy tube
  244. Help needed lowering B+ for DIY amp
  245. 6SN7 CCS
  246. Russian 6L6 family sketchy?
  247. HT regulator using 78xx
  248. Audio Research CA50
  249. Granite tiles
  250. SE Triode amp for a newbie

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