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  1. 6gw8 /ECL86 El Cheapo modifications
  2. Danielak's 300B design
  3. 6080 @ 800A Question ...
  4. Groundplane layout theory
  5. delay on for 83 mercury vapor
  6. Anyone tried "Weber Copper" SS rectifyers?
  7. Scored a bunch of tubes at HamCon
  8. AB2 Anyone else done similiar
  9. 6v6 pp amplifier
  10. Loud 60 cycle Hum from tube amp.
  11. Building a Preamp
  12. another Big One....:)
  13. JJ factory pictures ...
  14. Good enough CFs
  15. What's a good way to clean tubes w/o taking off the labeling?
  16. 6BX7 or 12B4A for small SE amp?
  17. Schematic collection posted by a kind soul...
  18. Dumb question, but...
  19. Zen Quad 22
  20. I'm baffled -- 6AK6 push-pull amp
  21. pin count question
  22. 1G3 Max Dissapation?
  23. Edcor Transformers
  24. 12EL6 preamp
  25. Request for EICO HF-20 experiences and ideas
  26. So would this work?
  27. A valve pre amp for my disco and electric guitar.
  28. Small-signal (or small power) pentode that can handle 400V (or more)?
  29. Are 6GM8's rare?
  30. How to lower mains voltage using resistors
  31. Music angel XD-SE EL34
  32. Potential project for some inherited transformers
  33. Car Tube Amp?
  34. Marantz 7 Preamp
  35. Euridice pramp but with 45
  36. Tubelab SE Parafeed Monoblocks (5 channel)
  37. Can 6AK6's take high voltages?
  38. Tube equal to one section of a 12AX7?
  39. HK 'Deuce front end on G2 drive output stage?
  40. Direct-coupled cathode/source follower driver in PP?
  41. CCS power supply loading..
  42. Photo Gallery -- Simple SE build
  43. Buying vintage good tubes
  44. current tube manufacturers and or brands
  45. PSU with TL783-question
  46. Hashimoto H-20-7U for 6v6 in triode SE..?
  47. Speakers impedance
  48. mesh plate el34 (supereTNT)
  49. Tagboard amps
  50. 807 single ended guitar amp
  51. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  52. 6CL6 vs. 12BY7A
  53. Suggestions for a good tube line amp
  54. 12el6
  55. High Squareness Ratio of a Transformer
  56. What causes a tube to crack?
  57. My 66 Fender bassman tube guitar amp is cutting out intermittently and is making a bl
  58. Ming Da MC-7R transformers for Quad 22 clone.
  59. SimpleSE and Switches
  60. Bias and distortion 6EM7
  61. Need ideas - 6L6GA & 6X5GT
  62. tube microphone preamp design ideas
  63. Firestone Air Chief
  64. Zenith Console find, amp suggestions?
  65. 5842 russian equiv 6S45P or 6C45PI ?
  66. bizarre or good topology idea?
  67. 12 EL6 car preamp
  68. Waxy substance leaking from vintage OPT
  69. Output transformer protection fuses
  70. 5670 SRPP DC coupled to 6S4A
  71. L as last filter element?
  72. Strong cigarette smell in a tube amp
  73. Gas coupling?
  74. Differences between nos Tesla E88CC?
  75. Harmonic parrot food?
  76. Modified 6V6 amp, 350 volt @ 250 K HZ output
  77. best current production el34
  78. Help for correct grounding a Dared VP-845
  79. two 6AL5s as a bridge rectifier
  80. JFET Switching on my tube amp
  81. Leak / Dynaco DIY
  82. S-5 tube amp kits
  83. I wanna build a CHEAP mono tube amp, need advice....
  84. 12ax7
  85. Testing for tube shorts
  86. KT66 alternatives in Quad II amps?
  87. FOR TUBE: 350V High Voltage Regulator
  88. what guideline to match pre and amp?
  89. New to list and 300B amp kits
  90. Krank 100w head w/ only 14v output
  91. Silvertone 1448 Output Transformer?
  92. Primary impedance output transformer
  93. isolation transformer
  94. Cloning transformers
  95. EAR509
  96. EL84 for Ipod and guitar
  97. Tubelab web site down, no more SimpleSE
  98. Schematics of potential interest
  99. super capacitor for dc heater
  100. Need a kit ??
  101. Edcor XSM10K/15K like intestage in tube SE ?
  102. Does anyone know of an LTSpice model for 12B4?
  103. where to order V-Cap ?
  104. Input Volume Pot
  105. Red Army Power-amp
  106. Cloning a HF-60
  107. Michaelson & Austin TVA-1 info
  108. analyze a circuit...quiescence current and R-Load
  109. how to calculate SE Coupling Cap Voltage ?
  110. Tubelab Simple SE Rectifier Problem?
  111. Mullard ECC88
  112. Engineering vs tube rolling
  113. Diode Peak working voltage ?
  114. Help wanted; combining topologies to "new" 807 PPP design ?
  115. Tubelab Simple SE with two Transformers - Centertaps?
  116. Hybrid Amp
  117. transformer information need help
  118. Replacing a cathode resistor with a CCS
  119. DC offset and relays
  120. Sourcing JJ 300B tubes
  121. EICO HF-12 Iron - Use in Guitar Amp?
  122. Decware Vs Rogue Audio
  123. Global Feedback on Mikael's KT88SE
  124. Generating big voltage swings without 'iron'
  125. 6AS7G Grid Voltage ??
  126. Next project 6EM7
  127. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  128. What to replace these caps with?
  129. 5691 plate value ratings
  130. Bussiness trip to Singapore
  131. Paco mike tube amp
  132. Emergency help with Wes' amp
  133. 2A3 without cathode bypass cap???
  134. Best way to burn-in my new SE xfrmers on the bench?
  135. tubelabse pt wiring
  136. Need help with my ST70
  137. 6sn7 direct coupled and transformer coupled
  138. Hickok 605A Test 6DJ8
  139. Grounded Grid Preamp
  140. Beginner WLTM fixer of 300B hum...
  141. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  142. How to figure gain on split-load with positive feedback?
  143. Mikaels KT88SE & VTV Octal Linestage
  144. idiot needs help making sense of funny squigles - Filmosound
  145. Custom Transformer?
  146. How are this schematic ?
  147. Need help with a Tube preamp Kit (6Z4, 6N3)
  148. data sheets for 7239 and 8068
  149. John Swenson's New BDT preamp
  150. no coupling caps
  151. 6SN7GT brand
  152. tube voltage regulator error amp
  153. driving 845's
  154. Just ordered a Korg EMX-1
  155. Maida for Screen Supply
  156. cracked el34 -> replacement squeals
  157. SimpleSE goes Push Pull
  158. Possibly defective Mullard 12AT7?
  159. Basic measurement question re: shorts
  160. EL84 DC 10Y Project
  161. TubeCad Journal FET CCS
  162. russian tube
  163. Source for #81 light bulb for Hickok Fuse
  164. pchw 's tube hybrid amp accurian info
  165. 3c24 se amp
  166. schematic of firstsoundaudio pre amp
  167. 300b-98c mesh bias
  168. 6SN7 coin base tubes
  169. tube rectifiers and electrolytic reforming w/ variac
  170. I'm running my leak stereo 20 single ended. WHAT???
  171. Varnish on old transformer
  172. SE parallel output questions
  173. Darius Loftin White explained
  174. best capacitor
  175. New Sensor's "Mullard" EL34 reissue?
  176. Best Way to Control Plate Voltage?
  177. Any Mods for a Noisy Leak Point one Stereo?
  178. tubes for 87db spendor
  179. 4v for rectifier tube
  180. Need help rebuilding old PA amplifier!
  181. inverted?
  182. Old Tube Radio - Restoration Project
  183. quick - need parts retailers Wash DC area
  184. H&K Tubeman Circuit Questions (added schematics!)
  185. Marshalls: Why did 600V B+ become 470V?
  186. Raising filament winding above cathode with a EZ81 in the circuit OK?
  187. Problem with Beard Audio
  188. 100K pot in a preamp?
  189. Motor Run Capacitor
  190. Power transformer for 6883B tube uses?
  191. EAGLE PCB help with socket on it
  192. Rca Mi-38188
  193. C- Battery Supply
  194. Seperating Preamp from Amp in Integrated Amps
  195. Wind my own output transformer for 100w bass amp
  196. Please help me in getting rid of the buzz.
  197. Tube Phono stage dilema
  198. Grounding with single tap secondary...
  199. VTL - Manley stereo 75
  200. What about KT100 in SE ?
  201. Tube amplifier kit needed to drive low efficiency speaker
  202. feeling very pleased with myself
  203. Quicksilver Retube
  204. My Totem Arro 4 ohm load on KT-88 based amp
  205. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  206. for fans of the EL38 - the E3375
  207. 811a Opt
  208. Guitar amp for Wes is running!
  209. Pure class-A or class AB?
  210. 12B4 PP Full Differential Amp Notion
  211. My opinion on Audio Note M10 schematic - Japan version
  212. B&K 650 tubecharts
  213. Help, I need your advice - What Next?
  214. Sloppy, Unreadable, Childlike schematics
  215. Anybody going to tomorrow's NVCF fair in Leamington?
  216. Randall RGT 100 Amp Problem
  217. Pete's SE E-Linear
  218. 0A2 or 0D3 ?
  219. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  220. LTP feedback
  221. Need help with my super six...
  222. EL509 as a CF
  223. SE Diode
  224. 6FD7, 6BM8 or other
  225. My OLD Project....... cheap tube audio project!!!
  226. tube noise
  227. Fisher 400 questions
  228. RL12P35 amplifier
  229. 6AS7 ppp
  230. 6j5 dc coupled to 12b4a as 2a3 driver
  231. '81 Twin problems
  232. The sound of different EL34s.
  233. Output transformer and FB
  234. Triode curves for 6AU5
  235. 26/el-84 amp possible..?
  236. Vaic 52B monos
  237. Hour Meter for a Tube Amp..
  238. volume pot replacement
  239. Any Ampeg SVT-II (non-pro) schematics???
  240. Ampex 600
  241. Tubing Testing...how are these numbers?
  242. No-R No-C Power Supply
  243. Are my Speakers efficient enough for my Amp?
  244. doesn't sound quite right
  245. 6DJ8 alternates?
  246. Is this the dumbest question?
  247. Fuse between B+ and output transformer?
  248. Telefunken Double Label Error...Ever seen this?
  249. 300B Summer Build Question
  250. 1,25kW tube amplifier/modulator

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