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  1. 317 CCS Question
  2. Active filter design software
  3. Larry Moore 10Y Squared
  4. Do you hear “pop” when you turn off your amp?
  5. Filmosound - Guitar - Ground
  6. Simple tube phono stage
  7. Tube phono amp repair/redesign help wanted
  8. tube newbie needs guidance
  9. Interesting linestage optimizing ideas
  10. Powered up my Lafayette 224A for the first time!
  11. Hickok Upgrades
  12. Passive BP filter sim results
  13. 100mA heater tubes for phono
  14. Audiotester + M-audio - info + question
  15. Indestructible HV hybrid regulator!
  16. yet another modified 5-20 amplifier
  17. help with OT for 15 watt tube amp
  18. Power supply for 12SL7 phono preamp
  19. few questions
  20. mystery 5881
  21. does lower B+ cause scratchy distortion?
  22. SY please keep us updated about your site
  23. Cleveland Ohio members?
  24. Scope tricks for detecting rectifier/choke switching
  25. To choke or not to choke
  26. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  27. Convergent Audio Technology (CAT) SL-1 preamplifier
  28. Very low current CCS?
  29. Morgan Jones' E88CC Phono
  30. pse help, unity µ triode as a phase inverter
  31. variable capacitor volume control
  32. What to do with P-P transformer ?
  33. 837 tube for SE Amplifier
  34. calculating transformer current draw question
  35. glass audio 1995 "Single Ended Glory"
  36. Manual for Heathkit AA-121 Power Amp
  37. Low gain triode recommendation plz
  38. Tubelab PP question
  39. Output transformer impedance question
  40. Choke... The side makes difference?
  41. Tubelab...Why "sandy" SE amps?
  42. Fostex Meets Pentode I need some NFB
  43. Oddball Sweep tubes in PP
  44. Noob - where to start?
  45. big doubt: dynakit st35 VS diytube st35clone
  46. Compactron Output Tubes
  47. XPP amp
  48. Tubelab SE ... which 5AR4 ?
  49. Getting only 400 hours on Class A2 PP tube
  50. Pete Millett's 829B amp -> monoblocks
  51. 6JU8A Spec confusion
  52. post on amp design by a newbie
  53. (INDIA) ECC802S/EL84 build, hardware requirements
  54. 6gw8 /ECL86 El Cheapo modifications
  55. Danielak's 300B design
  56. 6080 @ 800µA Question ...
  57. Groundplane layout theory
  58. delay on for 83 mercury vapor
  59. Anyone tried "Weber Copper" SS rectifyers?
  60. Scored a bunch of tubes at HamCon
  61. AB2 Anyone else done similiar
  62. 6v6 pp amplifier
  63. Loud 60 cycle Hum from tube amp.
  64. Building a Preamp
  65. another Big One....:)
  66. JJ factory pictures ...
  67. Good enough CFs
  68. What's a good way to clean tubes w/o taking off the labeling?
  69. 6BX7 or 12B4A for small SE amp?
  70. Schematic collection posted by a kind soul...
  71. Dumb question, but...
  72. Zen Quad 22
  73. I'm baffled -- 6AK6 push-pull amp
  74. pin count question
  75. 1G3 Max Dissapation?
  76. Edcor Transformers
  77. 12EL6 preamp
  78. Request for EICO HF-20 experiences and ideas
  79. So would this work?
  80. A valve pre amp for my disco and electric guitar.
  81. Small-signal (or small power) pentode that can handle 400V (or more)?
  82. Are 6GM8's rare?
  83. How to lower mains voltage using resistors
  84. Music angel XD-SE EL34
  85. Potential project for some inherited transformers
  86. Car Tube Amp?
  87. Marantz 7 Preamp
  88. Euridice pramp but with 45
  89. Tubelab SE Parafeed Monoblocks (5 channel)
  90. Can 6AK6's take high voltages?
  91. Tube equal to one section of a 12AX7?
  92. HK 'Deuce front end on G2 drive output stage?
  93. Direct-coupled cathode/source follower driver in PP?
  94. CCS power supply loading..
  95. Photo Gallery -- Simple SE build
  96. Buying vintage good tubes
  97. current tube manufacturers and or brands
  98. PSU with TL783-question
  99. Hashimoto H-20-7U for 6v6 in triode SE..?
  100. Speakers impedance
  101. mesh plate el34 (supereTNT)
  102. Tagboard amps
  103. 807 single ended guitar amp
  104. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  105. 6CL6 vs. 12BY7A
  106. Suggestions for a good tube line amp
  107. 12el6
  108. High Squareness Ratio of a Transformer
  109. What causes a tube to crack?
  110. My 66 Fender bassman tube guitar amp is cutting out intermittently and is making a bl
  111. Ming Da MC-7R transformers for Quad 22 clone.
  112. SimpleSE and Switches
  113. Bias and distortion 6EM7
  114. Need ideas - 6L6GA & 6X5GT
  115. tube microphone preamp design ideas
  116. Firestone Air Chief
  117. Zenith Console find, amp suggestions?
  118. 5842 russian equiv 6S45P or 6C45PI ?
  119. bizarre or good topology idea?
  120. 12 EL6 car preamp
  121. Waxy substance leaking from vintage OPT
  122. Output transformer protection fuses
  123. 5670 SRPP DC coupled to 6S4A
  124. L as last filter element?
  125. Strong cigarette smell in a tube amp
  126. Gas coupling?
  127. Differences between nos Tesla E88CC?
  128. Harmonic parrot food?
  129. Modified 6V6 amp, 350 volt @ 250 K HZ output
  130. best current production el34
  131. Help for correct grounding a Dared VP-845
  132. two 6AL5s as a bridge rectifier
  133. JFET Switching on my tube amp
  134. Leak / Dynaco DIY
  135. S-5 tube amp kits
  136. I wanna build a CHEAP mono tube amp, need advice....
  137. 12ax7
  138. Testing for tube shorts
  139. KT66 alternatives in Quad II amps?
  140. FOR TUBE: 350V High Voltage Regulator
  141. what guideline to match pre and amp?
  142. New to list and 300B amp kits
  143. Krank 100w head w/ only 14v output
  144. Silvertone 1448 Output Transformer?
  145. Primary impedance output transformer
  146. isolation transformer
  147. Cloning transformers
  148. EAR509
  149. EL84 for Ipod and guitar
  150. Tubelab web site down, no more SimpleSE
  151. Schematics of potential interest
  152. super capacitor for dc heater
  153. Need a kit ??
  154. Edcor XSM10K/15K like intestage in tube SE ?
  155. Does anyone know of an LTSpice model for 12B4?
  156. where to order V-Cap ?
  157. Input Volume Pot
  158. Red Army Power-amp
  159. Cloning a HF-60
  160. Michaelson & Austin TVA-1 info
  161. analyze a circuit...quiescence current and R-Load
  162. how to calculate SE Coupling Cap Voltage ?
  163. Tubelab Simple SE Rectifier Problem?
  164. Mullard ECC88
  165. Engineering vs tube rolling
  166. Diode Peak working voltage ?
  167. Help wanted; combining topologies to "new" 807 PPP design ?
  168. Tubelab Simple SE with two Transformers - Centertaps?
  169. Hybrid Amp
  170. transformer information need help
  171. Replacing a cathode resistor with a CCS
  172. DC offset and relays
  173. Sourcing JJ 300B tubes
  174. EICO HF-12 Iron - Use in Guitar Amp?
  175. Decware Vs Rogue Audio
  176. Global Feedback on Mikael's KT88SE
  177. Generating big voltage swings without 'iron'
  178. 6AS7G Grid Voltage ??
  179. Next project 6EM7
  180. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  181. What to replace these caps with?
  182. 5691 plate value ratings
  183. Bussiness trip to Singapore
  184. Paco mike tube amp
  185. Emergency help with Wes' amp
  186. 2A3 without cathode bypass cap???
  187. Best way to burn-in my new SE xfrmers on the bench?
  188. tubelabse pt wiring
  189. Need help with my ST70
  190. 6sn7 direct coupled and transformer coupled
  191. Hickok 605A Test 6DJ8
  192. Grounded Grid Preamp
  193. Beginner WLTM fixer of 300B hum...
  194. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  195. How to figure gain on split-load with positive feedback?
  196. Mikaels KT88SE & VTV Octal Linestage
  197. idiot needs help making sense of funny squigles - Filmosound
  198. Custom Transformer?
  199. How are this schematic ?
  200. Need help with a Tube preamp Kit (6Z4, 6N3)
  201. data sheets for 7239 and 8068
  202. John Swenson's New BDT preamp
  203. no coupling caps
  204. 6SN7GT brand
  205. tube voltage regulator error amp
  206. driving 845's
  207. Just ordered a Korg EMX-1
  208. Maida for Screen Supply
  209. cracked el34 -> replacement squeals
  210. SimpleSE goes Push Pull
  211. Possibly defective Mullard 12AT7?
  212. Basic measurement question re: shorts
  213. EL84 DC 10Y Project
  214. TubeCad Journal FET CCS
  215. russian tube
  216. Source for #81 light bulb for Hickok Fuse
  217. pchw 's tube hybrid amp accurian info
  218. 3c24 se amp
  219. schematic of firstsoundaudio pre amp
  220. 300b-98c mesh bias
  221. 6SN7 coin base tubes
  222. tube rectifiers and electrolytic reforming w/ variac
  223. I'm running my leak stereo 20 single ended. WHAT???
  224. Varnish on old transformer
  225. SE parallel output questions
  226. Darius Loftin White explained
  227. best capacitor
  228. New Sensor's "Mullard" EL34 reissue?
  229. Best Way to Control Plate Voltage?
  230. Any Mods for a Noisy Leak Point one Stereo?
  231. tubes for 87db spendor
  232. 4v for rectifier tube
  233. Need help rebuilding old PA amplifier!
  234. inverted?
  235. Old Tube Radio - Restoration Project
  236. quick - need parts retailers Wash DC area
  237. H&K Tubeman Circuit Questions (added schematics!)
  238. Marshalls: Why did 600V B+ become 470V?
  239. Raising filament winding above cathode with a EZ81 in the circuit OK?
  240. Problem with Beard Audio
  241. 100K pot in a preamp?
  242. Motor Run Capacitor
  243. Power transformer for 6883B tube uses?
  244. EAGLE PCB help with socket on it
  245. Rca Mi-38188
  246. C- Battery Supply
  247. Seperating Preamp from Amp in Integrated Amps
  248. Wind my own output transformer for 100w bass amp
  249. Please help me in getting rid of the buzz.
  250. Tube Phono stage dilema

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