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  1. 100mA heater tubes for phono
  2. Audiotester + M-audio - info + question
  3. Indestructible HV hybrid regulator!
  4. yet another modified 5-20 amplifier
  5. help with OT for 15 watt tube amp
  6. Power supply for 12SL7 phono preamp
  7. few questions
  8. mystery 5881
  9. does lower B+ cause scratchy distortion?
  10. SY please keep us updated about your site
  11. Cleveland Ohio members?
  12. Scope tricks for detecting rectifier/choke switching
  13. To choke or not to choke
  14. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  15. Convergent Audio Technology (CAT) SL-1 preamplifier
  16. Very low current CCS?
  17. Morgan Jones' E88CC Phono
  18. pse help, unity triode as a phase inverter
  19. variable capacitor volume control
  20. What to do with P-P transformer ?
  21. 837 tube for SE Amplifier
  22. calculating transformer current draw question
  23. glass audio 1995 "Single Ended Glory"
  24. Manual for Heathkit AA-121 Power Amp
  25. Low gain triode recommendation plz
  26. Tubelab PP question
  27. Output transformer impedance question
  28. Choke... The side makes difference?
  29. Tubelab...Why "sandy" SE amps?
  30. Fostex Meets Pentode I need some NFB
  31. Oddball Sweep tubes in PP
  32. Noob - where to start?
  33. big doubt: dynakit st35 VS diytube st35clone
  34. Compactron Output Tubes
  35. XPP amp
  36. Tubelab SE ... which 5AR4 ?
  37. Getting only 400 hours on Class A2 PP tube
  38. Pete Millett's 829B amp -> monoblocks
  39. 6JU8A Spec confusion
  40. post on amp design by a newbie
  41. (INDIA) ECC802S/EL84 build, hardware requirements
  42. 6gw8 /ECL86 El Cheapo modifications
  43. Danielak's 300B design
  44. 6080 @ 800A Question ...
  45. Groundplane layout theory
  46. delay on for 83 mercury vapor
  47. Anyone tried "Weber Copper" SS rectifyers?
  48. Scored a bunch of tubes at HamCon
  49. AB2 Anyone else done similiar
  50. 6v6 pp amplifier
  51. Loud 60 cycle Hum from tube amp.
  52. Building a Preamp
  53. another Big One....:)
  54. JJ factory pictures ...
  55. Good enough CFs
  56. What's a good way to clean tubes w/o taking off the labeling?
  57. 6BX7 or 12B4A for small SE amp?
  58. Schematic collection posted by a kind soul...
  59. Dumb question, but...
  60. Zen Quad 22
  61. I'm baffled -- 6AK6 push-pull amp
  62. pin count question
  63. 1G3 Max Dissapation?
  64. Edcor Transformers
  65. 12EL6 preamp
  66. Request for EICO HF-20 experiences and ideas
  67. So would this work?
  68. A valve pre amp for my disco and electric guitar.
  69. Small-signal (or small power) pentode that can handle 400V (or more)?
  70. Are 6GM8's rare?
  71. How to lower mains voltage using resistors
  72. Music angel XD-SE EL34
  73. Potential project for some inherited transformers
  74. Car Tube Amp?
  75. Marantz 7 Preamp
  76. Euridice pramp but with 45
  77. Tubelab SE Parafeed Monoblocks (5 channel)
  78. Can 6AK6's take high voltages?
  79. Tube equal to one section of a 12AX7?
  80. HK 'Deuce front end on G2 drive output stage?
  81. Direct-coupled cathode/source follower driver in PP?
  82. CCS power supply loading..
  83. Photo Gallery -- Simple SE build
  84. Buying vintage good tubes
  85. current tube manufacturers and or brands
  86. PSU with TL783-question
  87. Hashimoto H-20-7U for 6v6 in triode SE..?
  88. Speakers impedance
  89. mesh plate el34 (supereTNT)
  90. Tagboard amps
  91. 807 single ended guitar amp
  92. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  93. 6CL6 vs. 12BY7A
  94. Suggestions for a good tube line amp
  95. 12el6
  96. High Squareness Ratio of a Transformer
  97. What causes a tube to crack?
  98. My 66 Fender bassman tube guitar amp is cutting out intermittently and is making a bl
  99. Ming Da MC-7R transformers for Quad 22 clone.
  100. SimpleSE and Switches
  101. Bias and distortion 6EM7
  102. Need ideas - 6L6GA & 6X5GT
  103. tube microphone preamp design ideas
  104. Firestone Air Chief
  105. Zenith Console find, amp suggestions?
  106. 5842 russian equiv 6S45P or 6C45PI ?
  107. bizarre or good topology idea?
  108. 12 EL6 car preamp
  109. Waxy substance leaking from vintage OPT
  110. Output transformer protection fuses
  111. 5670 SRPP DC coupled to 6S4A
  112. L as last filter element?
  113. Strong cigarette smell in a tube amp
  114. Gas coupling?
  115. Differences between nos Tesla E88CC?
  116. Harmonic parrot food?
  117. Modified 6V6 amp, 350 volt @ 250 K HZ output
  118. best current production el34
  119. Help for correct grounding a Dared VP-845
  120. two 6AL5s as a bridge rectifier
  121. JFET Switching on my tube amp
  122. Leak / Dynaco DIY
  123. S-5 tube amp kits
  124. I wanna build a CHEAP mono tube amp, need advice....
  125. 12ax7
  126. Testing for tube shorts
  127. KT66 alternatives in Quad II amps?
  128. FOR TUBE: 350V High Voltage Regulator
  129. what guideline to match pre and amp?
  130. New to list and 300B amp kits
  131. Krank 100w head w/ only 14v output
  132. Silvertone 1448 Output Transformer?
  133. Primary impedance output transformer
  134. isolation transformer
  135. Cloning transformers
  136. EAR509
  137. EL84 for Ipod and guitar
  138. Tubelab web site down, no more SimpleSE
  139. Schematics of potential interest
  140. super capacitor for dc heater
  141. Need a kit ??
  142. Edcor XSM10K/15K like intestage in tube SE ?
  143. Does anyone know of an LTSpice model for 12B4?
  144. where to order V-Cap ?
  145. Input Volume Pot
  146. Red Army Power-amp
  147. Cloning a HF-60
  148. Michaelson & Austin TVA-1 info
  149. analyze a circuit...quiescence current and R-Load
  150. how to calculate SE Coupling Cap Voltage ?
  151. Tubelab Simple SE Rectifier Problem?
  152. Mullard ECC88
  153. Engineering vs tube rolling
  154. Diode Peak working voltage ?
  155. Help wanted; combining topologies to "new" 807 PPP design ?
  156. Tubelab Simple SE with two Transformers - Centertaps?
  157. Hybrid Amp
  158. transformer information need help
  159. Replacing a cathode resistor with a CCS
  160. DC offset and relays
  161. Sourcing JJ 300B tubes
  162. EICO HF-12 Iron - Use in Guitar Amp?
  163. Decware Vs Rogue Audio
  164. Global Feedback on Mikael's KT88SE
  165. Generating big voltage swings without 'iron'
  166. 6AS7G Grid Voltage ??
  167. Next project 6EM7
  168. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  169. What to replace these caps with?
  170. 5691 plate value ratings
  171. Bussiness trip to Singapore
  172. Paco mike tube amp
  173. Emergency help with Wes' amp
  174. 2A3 without cathode bypass cap???
  175. Best way to burn-in my new SE xfrmers on the bench?
  176. tubelabse pt wiring
  177. Need help with my ST70
  178. 6sn7 direct coupled and transformer coupled
  179. Hickok 605A Test 6DJ8
  180. Grounded Grid Preamp
  181. Beginner WLTM fixer of 300B hum...
  182. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  183. How to figure gain on split-load with positive feedback?
  184. Mikaels KT88SE & VTV Octal Linestage
  185. idiot needs help making sense of funny squigles - Filmosound
  186. Custom Transformer?
  187. How are this schematic ?
  188. Need help with a Tube preamp Kit (6Z4, 6N3)
  189. data sheets for 7239 and 8068
  190. John Swenson's New BDT preamp
  191. no coupling caps
  192. 6SN7GT brand
  193. tube voltage regulator error amp
  194. driving 845's
  195. Just ordered a Korg EMX-1
  196. Maida for Screen Supply
  197. cracked el34 -> replacement squeals
  198. SimpleSE goes Push Pull
  199. Possibly defective Mullard 12AT7?
  200. Basic measurement question re: shorts
  201. EL84 DC 10Y Project
  202. TubeCad Journal FET CCS
  203. russian tube
  204. Source for #81 light bulb for Hickok Fuse
  205. pchw 's tube hybrid amp accurian info
  206. 3c24 se amp
  207. schematic of firstsoundaudio pre amp
  208. 300b-98c mesh bias
  209. 6SN7 coin base tubes
  210. tube rectifiers and electrolytic reforming w/ variac
  211. I'm running my leak stereo 20 single ended. WHAT???
  212. Varnish on old transformer
  213. SE parallel output questions
  214. Darius Loftin White explained
  215. best capacitor
  216. New Sensor's "Mullard" EL34 reissue?
  217. Best Way to Control Plate Voltage?
  218. Any Mods for a Noisy Leak Point one Stereo?
  219. tubes for 87db spendor
  220. 4v for rectifier tube
  221. Need help rebuilding old PA amplifier!
  222. inverted?
  223. Old Tube Radio - Restoration Project
  224. quick - need parts retailers Wash DC area
  225. H&K Tubeman Circuit Questions (added schematics!)
  226. Marshalls: Why did 600V B+ become 470V?
  227. Raising filament winding above cathode with a EZ81 in the circuit OK?
  228. Problem with Beard Audio
  229. 100K pot in a preamp?
  230. Motor Run Capacitor
  231. Power transformer for 6883B tube uses?
  232. EAGLE PCB help with socket on it
  233. Rca Mi-38188
  234. C- Battery Supply
  235. Seperating Preamp from Amp in Integrated Amps
  236. Wind my own output transformer for 100w bass amp
  237. Please help me in getting rid of the buzz.
  238. Tube Phono stage dilema
  239. Grounding with single tap secondary...
  240. VTL - Manley stereo 75
  241. What about KT100 in SE ?
  242. Tube amplifier kit needed to drive low efficiency speaker
  243. feeling very pleased with myself
  244. Quicksilver Retube
  245. My Totem Arro 4 ohm load on KT-88 based amp
  246. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  247. for fans of the EL38 - the E3375
  248. 811a Opt
  249. Guitar amp for Wes is running!
  250. Pure class-A or class AB?

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