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  1. Anything post power transformer that can cause it to hum / buzz?
  2. Aikido enclosure
  3. Power Transformers. Decisions
  4. First tube after IV
  5. Suggestions for Upgrade - VDV70/100
  6. New Hybrid Output Stage and booster for SE Amp
  7. Pro and cons high DCR filter choke
  8. do-it yourself leslie help
  9. John Broskie Aikido boards
  10. Making a muscular triode monoblock amplifier using P-P Eimac 450TH's
  11. Limited run PCBs - where's copyright???
  12. Hammond Amp Question
  13. Impedance matching
  14. 6111 output for CD player - opinions - some help?
  15. Sensitivity Limiter - Bogen Mx-30a
  16. Are my speakers efficient enough for tubes?
  17. Ping Sy: LED for Cathode Bias
  18. PSU capacitors/electrolytics
  19. 2A3 monoblock power supply
  20. 2 tube questions
  21. Just acquired HEATHKIT W4-AM-*picture*
  22. Passive line stage with tubes
  23. My favorite preamp
  24. Again, a preamp tube choice.
  25. Class Double A
  26. Two Stereo Tube Amps Into Monoblocks
  27. Multi-purpose tube amp (line and guitar inputs)
  28. Espey AM/FM radio (pentagrid mixer, etc.)
  29. Need help for DIY EL34PP tube amp
  30. Higher value oil capacitors?
  31. Transconductance.
  32. 5763 tetrode on OTL ?
  33. cornford harlequin
  34. Need help: 5687 tubes and heat dissipation
  35. Tube preamp, tone control problem
  36. Use 5KV transformer as output transformer?
  37. Any EL84 alternatives?
  38. help on id of tubes
  39. Sovtek 6CA7-EH Producing smoke...
  40. building V4's and phono pre
  41. pre out on a integrated tube amp?
  42. 6SN7 some good some bad
  43. Phono pre amp - thanks SY
  44. 6c33c Tube preamp
  45. Tubes for Lumley ST40 power amplifier?
  46. Plate supply of Conrad Johnson PV-5 ?
  47. 6CD6GA in Enhanced Triode Mode for SE Amp
  48. Fender 6G15 clone
  49. Gridstoppers against RF, a necessity ?
  50. where do I.E.T. tubes come from
  51. I wanna DIY a PP 6550 Guitar Setup
  52. Hum 300b Again
  53. Pse El34
  54. Mcintosh MR65 Tube Tuner
  55. Problem: Really Bright glowing 6CA7
  56. New member introduction & question
  57. The "PowerTotem"... a new way to SET?
  58. Please advice on KT88 Push Pull
  59. console "guitar amp" part 2
  60. Odd's n Ends Revisited 6V6 SE amp
  61. Bottlehead Foreplay with chipamp
  62. Next Amp: 2a3PSE, 300B or KT88SE UL
  63. transformer list
  64. do 300b amps really sound any good?
  65. Capacitance For Mono Block Design
  66. pilot 264
  67. Octal equivalents for 6C45?
  68. lm3875 chipamp and tube pre loud buzzing
  69. Using a spdt switch to select between triode mode and pentode mode on a guitar amp.
  70. 32 ohm bass amp.
  71. PSE UL EL84 or 6V6 or EL34?
  72. Paraphase Splitter - why is it unpopular?
  73. Tubed IR spectrophotometer
  74. Very Basic 12AX7 Heater Question
  75. 6072A/12AY7 for an AKG C12 Microphone
  76. SET Suggestions
  77. Will ccs work with a DHT?
  78. Resistor type and power rating
  79. tube patents
  80. Why use E182CC?
  81. tube
  82. understanding transformer codes
  83. Maida regulator, these results expected?
  84. Moto chassis pulled! pics!
  85. glasshouse kit amps. Any good?
  86. class B
  87. a.r.t. mpa tube pre amp
  88. Upper and lower triode in E88CC
  89. Booster Amps
  90. Help on Magnavox Paraphase (Gabevee?)
  91. New stock pre -amp tubes. Whats good?
  92. CV2492 / 6922 / E88CC
  93. HK Citation II Bias "issues"
  94. 3k vs. 5k transformer for PP 2A3
  95. Turret terminal board for line stage construction?
  96. Tube Cage Question
  97. Small and easy ESL amp
  98. SOVTEK 6550WE's any good?
  99. power tube for drivers
  100. 12B4A line driver/preamp
  101. Question about tube amp power supply caps
  102. Why separate AC heater supplies for driver and power tubes?
  103. Using one half of double triode
  104. huh ?
  105. holy cow, this sounds nice
  106. my SY CCS is only giving me 15mA
  107. Changing filter cap in HH Scott
  108. Why Class AB is bad
  109. Problem, please help !!!!!!
  110. Eico hf-30 reworking
  111. KT88 Bias Adjustment
  112. Interstage Distortion Measurements
  113. Survey: Aikido distortion
  114. Loftin-White Mod
  115. Music Angel EL34
  116. How much filtering required for DC heaters?
  117. What is the best input/driver for 2A3 SE?
  118. tube kits....
  119. !2ax7 heater wiring? Series / parallel?
  120. Shunt regulator
  121. Trying to choose a project...
  122. Old Projector amp conversion project
  123. Experiences with TJ Mesh Plate DHT's
  124. The lost Millman Seely chapters on audio amps
  125. Individual fixed bias and transf coupling
  126. Transmitter e-tour
  127. 7984
  128. Screen driven EL36 / 6CM5 /PL36 /25E5
  129. Clone Marantz 7C power supply
  130. On - board supply ?
  131. Name that EL34!
  132. How much plate voltage for 6N1P's?
  133. minimalist valve pre for follower
  134. Schematic opinion needed (guitar amp)
  135. Tube availability: what would you do?
  136. Silvertone 1472 Makeover
  137. Looking for EL32 schematic
  138. oil bath cooling for tubes?
  139. Aikido Crackle Hiss Noise Solved
  140. Mini-p1 tweaks
  141. Refried Power Supply?
  142. The Edcor meets the 6AV5
  143. old console radio as guitar amp
  144. Anyone have curves for a 5HC7?
  145. Any common cathode (grounded grid) schematics?
  146. SIMPLE tube amplifier for...dummy guy...
  147. ground and earth
  148. Tube Cad Journal dead
  149. First amp
  150. 6922 direct coupled to 2A3
  151. Ok guys, get your daggers out.......
  152. How would you build a hybrid LM3xxx amp?
  153. Tade no tube amp!
  154. Sherwood 5500
  155. Most accurate way of matching triodes ?
  156. Help Identify This AMP!
  157. Old Tube Equipment Turnon
  158. Current Sourced Cathode Follower
  159. Tube Tester Data
  160. noob pre/pwer amp recording ?s
  161. Anyone heard of "in-rush" limiter resistor
  162. Will adding a 10H/125mA choke hurt bass performance
  163. Fixed bias vs. auto bias
  164. Not your average output transformer problem
  165. Balanced Audio Technology VK 3i preamplifier
  166. Musical Fidelity X10-D - changing tubes problem
  167. power transformers in series
  168. Loud sudden rumbling when turn on amp
  169. Help with tube amplification?
  170. UTC CG-431 Terminal Arrangement
  171. Mingda MC34B tweaks
  172. Symphonic Line Die Erleuchtung Reference
  173. 6SL7 Diffamp front end
  174. PT/OPT Orientation questions
  175. Effect of using 50k pot instead of 100k pot in tube preamp?
  176. Using the Crowhurst articles and Claus Byrith
  177. 12SX7
  178. Bridge SE amplifier
  179. Cad Sw
  180. Kit amps in the UK
  181. ECC82 based preamp
  182. How important is the coupling cap?
  183. any pcb layout for marshall standard 50w valve amp ?
  184. pentode driven 300b set amp - any info?
  185. Circlotron Preamp with ECC88.
  186. Removing tone controls - Need a little help
  187. SE EL84 amplifier schematics
  188. Output coupling - Choke-coil method?
  189. 7788 tube mic preamp design
  190. Amperex 6085 Tube- Where to Buy?
  191. Can a 5687 drive four 813's in triode mode ?
  192. Schematics needed for Heathkit S33
  193. Tube Sparking
  194. Vacuum Tube Pre O.C.L.
  195. Why no single triode OTL power stages?
  196. 6922 .2 sections in parallel
  197. Pre-amp input remote control
  198. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  199. Relpacing 6EU7s with 12AX7s - Good idea?
  200. These Valves good for anything?
  201. buzz problem
  202. Help with trafo
  203. Svetlana EL509 III tubes
  204. Noise on Aikido output
  205. Book “Single Ended Amplifiers” by John (not Gordon) Rankin
  206. EV4417 6CM5 (6x) P-P Amp Schematic
  207. Need recommendation for cathode bypass cap
  208. Simplest flea-powered amp?
  209. Decisions, Decisions - Help me select iron
  210. 966 mercury vapor rectifier
  211. Sound Practices CDs
  212. Question about DIY EL34PP amp
  213. noisy noisy noisy noisy noisy tube
  214. Help needed lowering B+ for DIY amp
  215. 6SN7 CCS
  216. Russian 6L6 family sketchy?
  217. HT regulator using 78xx
  218. Audio Research CA50
  219. Granite tiles
  220. SE Triode amp for a newbie
  221. tube is flashing and glowing very bright!
  222. Suggestions for another amplifier project.
  223. almost just another newbie thread...
  224. Bogen PA--->Guitar Amp, few questions
  225. ts9 pt9 triode
  226. help Etude 124BA keep blowing fuse.
  227. Metal 6L6s?
  228. Hybrid amplifier help...
  229. Tube input and mosfet output
  230. musical fidelity f22 schematic wanted
  231. An intriguing 300B SE-direct-coupled-amplifier
  232. Output capacitor
  233. Cascoded Long Tail Pair Inferno!
  234. Tube ornamental rim
  235. What should be mod first in my amp
  236. EL504/PL504 spice model
  237. Long Tail Pair Phase Inverter with Penthode ?
  238. new spice models available
  239. Output Capacitor Value
  240. Popular tube websites notifier
  241. Convergent Preamplifier Schematich
  242. Source of tubes & associated stuff in Sydney?
  243. Projects involving EF50 tubes?
  244. Kt77?
  245. Best way to translate schematic into actual layout?
  246. Clean to breakup range
  247. 26 preamp problem
  248. mono tube microphone preamp
  249. Help designing a tube amp...
  250. MJE350 pinout and ccs issue

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