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  1. Shielding preamp power supply
  2. Troubleshooting EL34 push pull amp
  3. amp input volume
  4. What Mullard 12AX7 is better?
  5. Universal audio / Avalon mic pre schematics
  6. Since transconductance amps has become so popular lately...
  7. Mecanical PSU hum
  8. help i.d. this amplifier
  9. Question about a hybrid PSU design
  10. 35Z5GT half-wave rectifier
  11. Riviera 725 guitar tubes amp
  12. Best place to use 2 Jupiter Bee caps in tube amp?
  13. what rating for diode of 450Volts DC
  14. Telefunken 6L6GC ???????
  15. Why are my amps doing this?
  16. How to calculate the gain of an input-driver stage?
  17. 6L6 vs EL34
  18. protect your amps
  19. Snap Ring Octal Sockets
  20. Suitable operating point for 6SN7 as a differential driver ?
  21. Suitable rectifier
  22. 6N1P & SV83 mu stage driving 845?
  23. Has anyone built a transformer coupled preamp?
  24. Circuit diagram for RCA vintage 6BQ5 amplifier?
  25. Driver valve discussion
  26. Help to choose the tubes!
  27. Why hum in one channel only?
  28. DC heater noise WORSE than AC
  29. Rdh 4
  30. 900v B+ Silly time.
  31. tube rectifier arrangement
  32. Matrix Amp?
  33. Dynaco Stereo 70 amplifier
  34. Ultimate power switch?
  35. AC or DC current for 300B and 2A3 tube filaments ?
  36. 0.1uF @ 3000V Ceramic?
  37. Power Triodes in current production
  38. Anyone in the world identify eico trans?
  39. Mullard 5-20 in triode mode
  40. THX certification, or integrated near THX Quality,
  41. Feedback resistor on Baxandall tone stack?
  42. SE Pentode or PP Triode ?
  43. how does one "voice" a tube amp
  44. Musical fidelity Nu-Vista
  45. Tube substitutions in Heathkit W5M
  46. PSUD2 question
  47. 6L6 class A P-P CFB amp
  48. i have a matched pair of 3cx1000a7..
  49. Different silvering patterns on tube tops?
  50. Designing Guitar Amp's Project
  51. Help with amp rebuild
  52. Mystery (to me) phase inverter?
  53. Biasing
  54. SE KT88 Amp
  55. Good design?
  56. Auto Biasing
  57. nuvistor MC step up
  58. Corian for tube amp?
  59. 6AQ5 Line stage?
  60. 6550 o/p stage
  61. Help with finding preamp schematic
  62. AVO data for 8417 (Quicksilver) tubes
  63. Any experience with this nice toroidal OT?
  64. 300B SE cathode feedback to grid?
  65. hummmmmmm?
  66. ERO KP1832 Bypass Caps for sale
  67. no bass makes pedro a whiny boy
  68. Iron, glass, sand and lead.
  69. Is this any good? Considerations
  70. 2A3 SET Output Transformer opinions/recommendations
  71. My 6C45 DC 6C41, advice wanted
  72. DIY valve
  73. A good SE project?
  74. who will build me this special "line tubeamp"
  75. PI filters
  76. Designing a simple dc filament supply?
  77. Rogers Cadett amp
  78. HI & a few words/questions ...
  79. 6d22s
  80. eBay
  81. Chassis layout for Stereo JE Labs 300BDX
  82. Output transformer help
  83. CAD Program for Tubes
  84. 801A/816 tubes wanted
  85. This little thing might save your life!
  86. What happens if I loose the cathode bias?
  87. beginners ecl82 power supply
  88. 2MHz, High voltage source?
  89. beginner's ecl82
  90. Handmade Electronics Metal Punches?
  91. EL34 types
  92. Spice Model 6CW4
  93. El/pl 519
  94. Euridice symetric to Amp?
  95. use of 6dj8 as driver on a direct coupled 2a3 se amp
  96. Western Electric 275A Schematic
  97. Where to source 833 power tube
  98. capacitor reactance
  99. Overvoltaging resistors
  100. EL84 Push Pull amp.
  101. Power supply load capacity
  102. Tube preamp problem
  103. E88C (6DL4/ 8255), any circuit for it?
  104. Is there a name for this drive method?
  105. 6BM8 Question
  106. Tube mic preamp/mixer
  107. Please cast your votes..or make a suggestion or 2
  108. RIAA in LTspice
  109. Parallel ECC82 comment please
  110. A push-pull amp i can live with
  111. Sub-miniature russian amp help
  112. Tube Optical-Isolation Unit
  113. MKP in the Powersupply.
  114. 6SN7-GTB Globe (Chinese)
  115. 12BH7 Specs
  116. Is this worth my time?
  117. choke value
  118. ipod + tubes
  119. Leak tl/25+ OPT selection
  120. Gabevee's Maggie (MAG1515)
  121. Can partial feedback be as effective as global fb for decent damping factor?
  122. Which trans wire is which?
  123. What's wrong with this tube?
  124. F: great sound control with ECC82
  125. 30W UL 6L6P-P amp
  126. 300B stereo SE amp and PP2A3 monoblocks
  127. 6S45P matching
  128. Inductors made for crossover in an amp?
  129. PX4 or AVO44 or AV044 based SETA
  130. power conditioning
  131. Microphone preamp with compressor
  132. Current production rectifiers
  133. mu stage help...
  134. Non-Polar caps to cathode bypass
  135. 5u4 / solid state switchable supply
  136. 12AX7 sound ... going with the trend
  137. 6L6 PP Design Recommendations?
  138. EL 34 30W ultra linear
  139. Convert Audion Silver Knight PP monos
  140. Too much gain
  141. The long lost linear gain stage
  142. Philco power tranny diagram/5u4 supply
  143. Kt88 Se
  144. supersize me, please. (powersupply)
  145. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  146. Best 6CA7?
  147. ECC99 line preamp
  148. coupling caps???
  149. variable regulated negitive grid supply
  150. hum loop advice
  151. Against all odds...
  152. 6as7 se amp
  153. Help .. tube amplifier .. 1st !
  154. winding a toroidal pp output
  155. solid state Vs Tube Rectification
  156. Cryoed Tubes...what To Expect?
  157. I'm looking for 6H13C tubes
  158. Which ST-70 ?
  159. Some questions about Van Scoyoc X-coupled splitter
  160. Quicksilver 8417 bias runaway?
  161. Most effective use of valve pre & active xover
  162. Tube possibilities for 2.9k-ohm speaker?
  163. Help on Preamp Mute Switch
  164. Fixed bias supply problems...
  165. Help with VTL preamp...
  166. question about 811A and 572B
  167. Dual Stereo Cathode Folower Setup
  168. tube tester
  169. Audio Innovation 1000 SE
  170. 6as7 PP Schematic Help
  171. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  172. 7591EH failure
  173. opt frequency response
  174. Anyone got any opinions on this?
  175. My ForePlay Processor Controlled Preamp
  176. Tube ghetto blaster ?
  177. Help trouble shooting
  178. "The Fisher" tube amp 7189 output tubes
  179. UTC output transformers specs
  180. Regulation options for 807 g2
  181. My Mullard 5/20
  182. Anyone tried Black Beauty caps??
  183. KT88 power amp
  184. High voltage regulator
  185. Filament voltage ?
  186. Unity Gain Unbalanced to Balanced Phase Splitter
  187. Anyone know the g1-g2 capacitance of 6AU6?
  188. Any good Transformer or Tube manufactureres in India ?
  189. McMartin MA-20?
  190. Help with Jolida 302A
  191. need 13fd7 curves
  192. Drd Kt88?
  193. miniature tube amp
  194. 300B pp schematic found, what about it?
  195. Tube Output Stage
  196. se otl
  197. Toroidals as OPTs?
  198. Tube advice
  199. Understanding OPT primary Z and load matching.
  200. help with Optomal placement of output transformers.
  201. 50h B26
  202. Anyone know what this is?? Strange tube/ bulb.
  203. Please ID output transformer
  204. Cheap and Easy Tube Phono Preamp
  205. Carbon film vs metal film resistors in a stepped attenuator?
  206. Alps pots vs. TKD pots? TKD worth the extra$$?
  207. Opamp as tube driver: Protection ideas?
  208. Looking for schematics CROFT OTL APPARITION
  209. ISO (new Tango) info...
  210. Noob Question on Driver Stages
  211. High Voltage Reference
  212. DIY valve amp
  213. JJ multisection caps
  214. Inverted Interstage Transformer
  215. regarding to the design of iron-cored inductors (chokes)
  216. Trying to find an amp
  217. 12v tube output stage for cs43122 based dac?
  218. Wattages & Loudness: ?I'm Lost?
  219. cmrr of common cathode
  220. The Next Step. (and budget tube amplifier kits/designs).
  221. non-diy amplifiers with choke input power supplies
  222. Does a cathode bypass capacitor reduce hum?
  223. a tube convert tries a mosfet
  224. Motorboating in leak 20
  225. New MC preamp is comming alive
  226. HV tubes
  227. power supply pspice simulation problem
  228. Can a tube rectifier handle a C dual LC?
  229. Valve schematic & PC board design
  230. Just acqired some strange tubes.........
  231. Sovtek 6L6WXT
  232. RCA tubes, need info
  233. Stromberg Carlson 245M
  234. mounting tubes upside-down
  235. 6922 acting strange........or is it ?
  236. Fender Champ: What Transformers?
  237. Naive CCS quesion
  238. DIY scrap tubebuffer with ECC88
  239. choke current rating
  240. Velleman K8010
  241. film vs. electrolytic
  242. Tube mic preamp for speaker measurements
  243. 833a plate resistance ?
  244. second harmonic distortion
  245. Speakers not connected on tube amp, good or bad?
  246. different psu filter topologies ?
  247. Does anyone know this english amp ?
  248. kt88 power amplifier
  249. physical layout of 6B4G PP amp?
  250. Tube Life

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