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

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