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  1. diy tube amp problem
  2. The Red Light District - another PP EL84 amp
  3. Balanced 300B output for headphones or loudspeakers?
  4. 5692, the best?
  5. Power transformer quality differences
  6. Is it possible to use regulated DC for a rectifier tube?
  7. Transformer Secondary Power
  8. Phono preamp
  9. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  10. Physically small rectifier tube with 5V heaters
  11. Distorting 5687 preamp circuit
  12. Looking for a good 300B datasheet
  13. CCS is your friend!
  14. Valve Pre Amp & Class D Power Amp
  15. heater supply questions
  16. sub-mini valve
  17. Amp kit recommendations
  18. First amp for a new in valves
  19. Loud buzz and hum from one monoblock!!!
  20. Stueyh
  21. Big *** '50s Power Supply, now what? 300B SET ideas...
  22. Phono Preamp Design Needed
  23. Severe oscillation in 6L6 amp
  24. How to tweak warmth to a power amp?
  25. Can anyone explain me this Loftin White amp?
  26. Substituting dual triodes
  27. ValveWave-1 My first Tube Project
  28. changing output capacitor value? what should I consider?
  29. motor run caps in the output? good or bad idea?
  30. resistors across the heater voltage then the middle is grounded
  31. Switched Pot Source Needed
  32. transcendar transformer
  33. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  34. Voltage Multipliers
  35. I want to build an AM Tube Tuner
  36. Tube Amp CCS?
  37. S-5 Electronics Tube Amp Kit
  38. Tube amps from eBay (China)
  39. filament supply: batteries v TentLabs?
  40. replace a 5651 tube with a zener?
  41. tube design books
  42. Bogen chb100 input conversion suggestions
  43. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  44. R-core xformers from China
  45. Counterpoint Service manual wanted
  46. Two chokes in one pot?
  47. help with a transformer
  48. 311T (211 alike) HIGH power triode
  49. Re-attaching anode cap to 805 or 811A tube
  50. "Fisher Doctor"
  51. Aikido + class D in the output stage
  52. tube-shop-com
  53. Ultrasonic heaters
  54. Grounding the Filament Winding
  55. Lundahl LL1680 for balanced output
  56. Website is back & new books posted
  57. strange tube G1 S/5
  58. First Tube Amp Needs an Overhaul
  59. pspice models for tubes
  60. Source for iron cores?
  61. Quad EL84 SE question
  62. Use of 12j1l and gu-50 tubes
  63. Shuguang 300B-98C
  64. Philips AG-9016 Upgrades???
  65. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  66. tube amp in a PCB with a toroidal xformer beside it?
  67. Need advice running 220v in USA
  68. Parallel-Push-Pull KT66 organ amp conversion ???
  69. new on tubes
  70. Balance 5687 pre-amp any advise??
  71. The Limitations of an EL34 in UL
  72. Source for tube bases....?
  73. 10Y, 26, 27 and 45: relative microphonics
  74. KT77 Mod Question/Idea/Punshishment
  75. KT88 SE with Edcor xfrmr
  76. Diy Distortion Pedal
  77. 45 fans expanded horizons upstream?
  78. 12B4a Cathode Follower
  79. Hybrid voltage doubler using tube and diode
  80. Finally finished my first tube amp!
  81. advice on an EL84 Push pull Amp schematic
  82. Vintage radio
  83. Look for 12AU7 Preamp Circuit .
  84. PSU question? Going tube rectified
  85. PSU Rebuild Help Pleas
  86. Screeching tubes
  87. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  88. Fisher 800 restoration
  89. stern's ecl86 amp
  90. Look for Western Electric KS-16547-L1 circuit diagram
  91. Help about grommes 500C
  92. Dynaco MK III with 6146A tubes.
  93. Volume pot for Musical Fidelity F22 pre amp.
  94. Don't you just hate it when
  95. Bogen 8417 tube conversion..?
  96. How to Build Unbilical from PS to Phono
  97. Class A SET preamp, help
  98. Grounding MFA Luminescence
  99. custom transformer manufacturers (potted if possible)
  100. To Recap - A Question
  101. KT 44 anyone tried these
  102. unfamiliar tube brand
  103. power supply schematic with a 6080 used as a "pass tube"
  104. why so CHEAP!?
  105. Antique Electronic Supply
  106. Best Use For My Sansui Iron?
  107. Help on AMC CVT 3030
  108. Heathkit W-5M Red Plate Issue
  109. 1st Post (here) : ) My first project: Boozhound Amp
  110. regulated DC heater supply
  111. Help me pick up some good tubes! Urgent!
  112. CLCRC power supply config
  113. Choke Replacement Question.
  114. What tube instead of 7189
  115. Help on PP EL 34 from Claus Byrith
  116. Datasheet of PTT4 tube?
  117. ready to give up
  118. O-Ring sizes for Tube Dampers
  119. preamp /amp combination question
  120. Strange Transformer Question.....
  121. Audio Note M3/4/5/6/8 schematics
  122. Lundahl LL1540 for SY's heretical?
  123. Henrys
  124. 955 Acorn tubes
  125. Do you know these Ampex mono Amps
  126. Audio Research Resistor Type
  127. volume issues
  128. Need advice for best CCS
  129. confusion in the resistor/capacitor values and B+ supply for the aikido
  130. What are the diferences between these ways of output?
  131. PS for tube preamp
  132. what resistors are in the aikido signal path
  133. clarification of aikido heater supply
  134. Audio Note schematics
  135. Data for PE08/40
  136. PA-060 use
  137. Anode loaded 6080 giving less than unity gain, Why??
  138. 3/8in thick acrylic - would this make a good chassis?
  139. 6c19p Se?
  140. CF and SRPP in one circuit . .
  141. WE417/437 with battery or RC on cathode
  142. Building a Preamp:Dual Outputs Question
  143. Audio Note Conquest?
  144. Power transformer as Parafeed output?
  145. Bogen amp
  146. Noob question about plate load
  147. adjusting gain?
  148. Lowering HT
  149. Kaneda hybrid preamp error ?
  150. Match priorities to schematic & toobs
  151. what do you think of this integrated?
  152. Modified Audio Note M7 Tube Pre Amplifier PCB
  153. lundahl xformers - are they potted?
  154. Beginner's very simple line pre-amp
  155. UX-226 Preamp
  156. Difference between microphones
  157. sv572-30, where to find
  158. E182CC - how to connect heater supply?
  159. Aikido pre tube for Minimum Gain
  160. 14gt8...clipping diodes?
  161. HPHV regulator
  162. Grounded Grid
  163. NYAL Super-It - removing volume pots, what resistor value to replace them?
  164. Another Bogen Conversion
  165. Trouble with my "new" PAS-3 Preamp
  166. Tubalizer, Monica
  167. musical angel modified marantz 7 preamp schematics
  168. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  169. Solder directly on tube?
  170. article in NY Times on Russian tubes
  171. Sovtek's sad tale
  172. audio research LS25 preamp
  173. Schematic needed PL519 Push-Pull Ultra-Linear amp
  174. Use 6C19 in a phono amp?
  175. 6L6 Push pull -- Power tranny question
  176. INPOL technology. Duh.
  177. Transformer problem
  178. Anyone tried a hi-voltage project as their first?
  179. Schematic needed PL519 Class A SE
  180. Giaime's new toy - aka the UniOctal
  181. Critique my circuit?
  182. New EC8010-VT52 Amp
  183. EL84/6BQ5 triode pp with no cathode biasing
  184. EL34 Push Pull in Class A
  185. In search of tube audiophile in Dhaka, Bangladesh
  186. Passive preamp with utc transformers
  187. RGN rectifiers in PSUD2...
  188. Power amp harmonics ?
  189. bypass tone controls on heathkit sp-2
  190. Doubts on cathode stripping in tubes
  191. Edcor amplifier --> 6l6 PP
  192. Welborne labs phono stage needs help, got killed in power surge last night
  193. Huge OPT and small tubes
  194. UTC technology
  195. Luxman 38FD schematic
  196. EL84 PP Diy. Pls help me!!!
  197. Grounding case of 6J5
  198. Tube HW question from a software guy
  199. 12AU7 tube preamplifier schema
  200. "Improved RIAA by Jax"-Power supply help needed!!!
  201. OT Overload question
  202. V76
  203. Application of 6877 ?
  204. First nos tubes
  205. Looking for tube sockets
  206. Input transformers impedance questions
  207. Hybrid amp schema?
  208. Hybrid Cascode ?
  209. Interstage topology question
  210. raccomandation with valve amps
  211. Power Transformers in Output!
  212. How do I design "SCREEN GRID DRIVE"
  213. My El34 SET
  214. Schematic needed 811a Class A2
  215. Power transformer from Tek545 'oscope
  216. Agape Audio Labs
  217. ETF06 - A century of good sound
  218. I completed my amp!
  219. Overload recovery
  220. Converting SS eq. to Tube
  221. oscillation
  222. Tube preamp with: 1V in and 15Vout???
  223. Bibster's 5687 Linestage, the return
  224. Anyone know anything about Morreto amps?
  225. Determining Output Power
  226. Turn on static?
  227. Estimate power transformer current rate?
  228. Control grid Voltage / grid stoppers...
  229. Horizontal TV tubes used in amplifier?
  230. tube sterio preamp complete
  231. Cons for using instrumentation tube PS for project amp...
  232. Svetlanas site down?
  233. Calculations for new Power transformer
  234. Mullard CV4015 info?
  235. SMPS for tube amp?
  236. Pentode Push-Pull
  237. LL1660S Anomaly
  238. DIY Hybrid poweramp noise and hum problem
  239. tube questions
  240. Problems w/biasing a lC50
  241. Big Honkin Tele
  242. Tube DIY store
  243. Pronouced 300B amp Midrange
  244. Tube preamp with current mirror
  245. Transformer Coupling and Headphones? (Toob Noob)
  246. Who can explain the source of this Siemens 12AU7
  247. how does one tell when a tube is truely dead?
  248. A curious observation
  249. Help choosing capacitor value?
  250. Neon Power?

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