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  1. Can someone look at a Counterpoint SA7 for me?
  2. The Wintersweet High-Vividity Project
  3. loftin white 801 amp
  4. Pics of unique design of amp chassis?
  5. Heathkit AA-32 modifications / upgrades
  6. Tango XE-20S Specification
  7. Question about Edcor output transformer
  8. SE EL84 output stage?
  9. New ST-70 Driver board from Blackburn Audio
  10. Transformer primary rating question
  11. Heathkit A7(c?) Rebuild
  12. Rewiring a socket to take 6GK6 instead of 6BQ5
  13. 317 CCS Question
  14. Active filter design software
  15. Larry Moore 10Y Squared
  16. Do you hear “pop” when you turn off your amp?
  17. Filmosound - Guitar - Ground
  18. Simple tube phono stage
  19. Tube phono amp repair/redesign help wanted
  20. Repairing a tape echo with tubes (Dynacord Echocord Super 62a)
  21. tube newbie needs guidance
  22. Interesting linestage optimizing ideas
  23. Powered up my Lafayette 224A for the first time!
  24. Hickok Upgrades
  25. Passive BP filter sim results
  26. 100mA heater tubes for phono
  27. Audiotester + M-audio - info + question
  28. Indestructible HV hybrid regulator!
  29. yet another modified 5-20 amplifier
  30. help with OT for 15 watt tube amp
  31. Power supply for 12SL7 phono preamp
  32. few questions
  33. mystery 5881
  34. does lower B+ cause scratchy distortion?
  35. SY please keep us updated about your site
  36. Cleveland Ohio members?
  37. Scope tricks for detecting rectifier/choke switching
  38. To choke or not to choke
  39. Tube rectified LC PS for 6SN7 Aikido - choke DCR question
  40. Convergent Audio Technology (CAT) SL-1 preamplifier
  41. Very low current CCS?
  42. Morgan Jones' E88CC Phono
  43. pse help, unity µ triode as a phase inverter
  44. variable capacitor volume control
  45. What to do with P-P transformer ?
  46. 837 tube for SE Amplifier
  47. calculating transformer current draw question
  48. glass audio 1995 "Single Ended Glory"
  49. Manual for Heathkit AA-121 Power Amp
  50. Low gain triode recommendation plz
  51. Tubelab PP question
  52. Output transformer impedance question
  53. Choke... The side makes difference?
  54. Tubelab...Why "sandy" SE amps?
  55. Fostex Meets Pentode I need some NFB
  56. Oddball Sweep tubes in PP
  57. Noob - where to start?
  58. big doubt: dynakit st35 VS diytube st35clone
  59. Compactron Output Tubes
  60. XPP amp
  61. Tubelab SE ... which 5AR4 ?
  62. Getting only 400 hours on Class A2 PP tube
  63. Pete Millett's 829B amp -> monoblocks
  64. 6JU8A Spec confusion
  65. post on amp design by a newbie
  66. (INDIA) ECC802S/EL84 build, hardware requirements
  67. 6gw8 /ECL86 El Cheapo modifications
  68. Danielak's 300B design
  69. 6080 @ 800µA Question ...
  70. Groundplane layout theory
  71. delay on for 83 mercury vapor
  72. Anyone tried "Weber Copper" SS rectifyers?
  73. Scored a bunch of tubes at HamCon
  74. AB2 Anyone else done similiar
  75. 6v6 pp amplifier
  76. Loud 60 cycle Hum from tube amp.
  77. Building a Preamp
  78. another Big One....:)
  79. JJ factory pictures ...
  80. Good enough CFs
  81. What's a good way to clean tubes w/o taking off the labeling?
  82. 6BX7 or 12B4A for small SE amp?
  83. Schematic collection posted by a kind soul...
  84. Dumb question, but...
  85. Zen Quad 22
  86. I'm baffled -- 6AK6 push-pull amp
  87. pin count question
  88. 1G3 Max Dissapation?
  89. Edcor Transformers
  90. 12EL6 preamp
  91. Request for EICO HF-20 experiences and ideas
  92. So would this work?
  93. A valve pre amp for my disco and electric guitar.
  94. Small-signal (or small power) pentode that can handle 400V (or more)?
  95. Are 6GM8's rare?
  96. How to lower mains voltage using resistors
  97. Music angel XD-SE EL34
  98. Potential project for some inherited transformers
  99. Car Tube Amp?
  100. Marantz 7 Preamp
  101. Euridice pramp but with 45
  102. Tubelab SE Parafeed Monoblocks (5 channel)
  103. Can 6AK6's take high voltages?
  104. Tube equal to one section of a 12AX7?
  105. HK 'Deuce front end on G2 drive output stage?
  106. Direct-coupled cathode/source follower driver in PP?
  107. CCS power supply loading..
  108. Photo Gallery -- Simple SE build
  109. Buying vintage good tubes
  110. current tube manufacturers and or brands
  111. PSU with TL783-question
  112. Hashimoto H-20-7U for 6v6 in triode SE..?
  113. Speakers impedance
  114. mesh plate el34 (supereTNT)
  115. Tagboard amps
  116. 807 single ended guitar amp
  117. Built the DDDAC MKII USB audio card, modified it to feed SRPP tube amp line stage
  118. 6CL6 vs. 12BY7A
  119. Suggestions for a good tube line amp
  120. 12el6
  121. High Squareness Ratio of a Transformer
  122. What causes a tube to crack?
  123. My 66 Fender bassman tube guitar amp is cutting out intermittently and is making a bl
  124. Ming Da MC-7R transformers for Quad 22 clone.
  125. SimpleSE and Switches
  126. Bias and distortion 6EM7
  127. Need ideas - 6L6GA & 6X5GT
  128. tube microphone preamp design ideas
  129. Firestone Air Chief
  130. Zenith Console find, amp suggestions?
  131. 5842 russian equiv 6S45P or 6C45PI ?
  132. bizarre or good topology idea?
  133. 12 EL6 car preamp
  134. Waxy substance leaking from vintage OPT
  135. Output transformer protection fuses
  136. 5670 SRPP DC coupled to 6S4A
  137. L as last filter element?
  138. Strong cigarette smell in a tube amp
  139. Gas coupling?
  140. Differences between nos Tesla E88CC?
  141. Harmonic parrot food?
  142. Modified 6V6 amp, 350 volt @ 250 K HZ output
  143. best current production el34
  144. Help for correct grounding a Dared VP-845
  145. two 6AL5s as a bridge rectifier
  146. JFET Switching on my tube amp
  147. Leak / Dynaco DIY
  148. S-5 tube amp kits
  149. I wanna build a CHEAP mono tube amp, need advice....
  150. 12ax7
  151. Testing for tube shorts
  152. KT66 alternatives in Quad II amps?
  153. FOR TUBE: 350V High Voltage Regulator
  154. what guideline to match pre and amp?
  155. New to list and 300B amp kits
  156. Krank 100w head w/ only 14v output
  157. Silvertone 1448 Output Transformer?
  158. Primary impedance output transformer
  159. isolation transformer
  160. Cloning transformers
  161. EAR509
  162. EL84 for Ipod and guitar
  163. Tubelab web site down, no more SimpleSE
  164. Schematics of potential interest
  165. super capacitor for dc heater
  166. Need a kit ??
  167. Edcor XSM10K/15K like intestage in tube SE ?
  168. Does anyone know of an LTSpice model for 12B4?
  169. where to order V-Cap ?
  170. Input Volume Pot
  171. Red Army Power-amp
  172. Cloning a HF-60
  173. Michaelson & Austin TVA-1 info
  174. analyze a circuit...quiescence current and R-Load
  175. how to calculate SE Coupling Cap Voltage ?
  176. Tubelab Simple SE Rectifier Problem?
  177. Mullard ECC88
  178. Engineering vs tube rolling
  179. Diode Peak working voltage ?
  180. Help wanted; combining topologies to "new" 807 PPP design ?
  181. Tubelab Simple SE with two Transformers - Centertaps?
  182. Hybrid Amp
  183. transformer information need help
  184. Replacing a cathode resistor with a CCS
  185. DC offset and relays
  186. Sourcing JJ 300B tubes
  187. EICO HF-12 Iron - Use in Guitar Amp?
  188. Decware Vs Rogue Audio
  189. Global Feedback on Mikael's KT88SE
  190. Generating big voltage swings without 'iron'
  191. 6AS7G Grid Voltage ??
  192. Next project 6EM7
  193. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  194. What to replace these caps with?
  195. 5691 plate value ratings
  196. Bussiness trip to Singapore
  197. Paco mike tube amp
  198. Emergency help with Wes' amp
  199. 2A3 without cathode bypass cap???
  200. Best way to burn-in my new SE xfrmers on the bench?
  201. tubelabse pt wiring
  202. Need help with my ST70
  203. 6sn7 direct coupled and transformer coupled
  204. Hickok 605A Test 6DJ8
  205. Grounded Grid Preamp
  206. Beginner WLTM fixer of 300B hum...
  207. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  208. How to figure gain on split-load with positive feedback?
  209. Mikaels KT88SE & VTV Octal Linestage
  210. idiot needs help making sense of funny squigles - Filmosound
  211. Custom Transformer?
  212. How are this schematic ?
  213. Need help with a Tube preamp Kit (6Z4, 6N3)
  214. data sheets for 7239 and 8068
  215. John Swenson's New BDT preamp
  216. no coupling caps
  217. 6SN7GT brand
  218. tube voltage regulator error amp
  219. driving 845's
  220. Just ordered a Korg EMX-1
  221. Maida for Screen Supply
  222. cracked el34 -> replacement squeals
  223. SimpleSE goes Push Pull
  224. Possibly defective Mullard 12AT7?
  225. Basic measurement question re: shorts
  226. EL84 DC 10Y Project
  227. TubeCad Journal FET CCS
  228. russian tube
  229. Source for #81 light bulb for Hickok Fuse
  230. pchw 's tube hybrid amp accurian info
  231. 3c24 se amp
  232. schematic of firstsoundaudio pre amp
  233. 300b-98c mesh bias
  234. 6SN7 coin base tubes
  235. tube rectifiers and electrolytic reforming w/ variac
  236. I'm running my leak stereo 20 single ended. WHAT???
  237. Varnish on old transformer
  238. SE parallel output questions
  239. Darius Loftin White explained
  240. best capacitor
  241. New Sensor's "Mullard" EL34 reissue?
  242. Best Way to Control Plate Voltage?
  243. Any Mods for a Noisy Leak Point one Stereo?
  244. tubes for 87db spendor
  245. 4v for rectifier tube
  246. Need help rebuilding old PA amplifier!
  247. inverted?
  248. Old Tube Radio - Restoration Project
  249. quick - need parts retailers Wash DC area
  250. H&K Tubeman Circuit Questions (added schematics!)

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