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

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