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  1. amp input volume
  2. What Mullard 12AX7 is better?
  3. Universal audio / Avalon mic pre schematics
  4. Since transconductance amps has become so popular lately...
  5. Mecanical PSU hum
  6. help i.d. this amplifier
  7. Question about a hybrid PSU design
  8. 35Z5GT half-wave rectifier
  9. Riviera 725 guitar tubes amp
  10. Best place to use 2 Jupiter Bee caps in tube amp?
  11. what rating for diode of 450Volts DC
  12. Telefunken 6L6GC ???????
  13. Why are my amps doing this?
  14. How to calculate the gain of an input-driver stage?
  15. 6L6 vs EL34
  16. protect your amps
  17. Snap Ring Octal Sockets
  18. Suitable operating point for 6SN7 as a differential driver ?
  19. Suitable rectifier
  20. 6N1P & SV83 mu stage driving 845?
  21. Has anyone built a transformer coupled preamp?
  22. Circuit diagram for RCA vintage 6BQ5 amplifier?
  23. Driver valve discussion
  24. Help to choose the tubes!
  25. Why hum in one channel only?
  26. DC heater noise WORSE than AC
  27. Rdh 4
  28. 900v B+ Silly time.
  29. tube rectifier arrangement
  30. Matrix Amp?
  31. Dynaco Stereo 70 amplifier
  32. Ultimate power switch?
  33. AC or DC current for 300B and 2A3 tube filaments ?
  34. 0.1uF @ 3000V Ceramic?
  35. Power Triodes in current production
  36. Anyone in the world identify eico trans?
  37. Mullard 5-20 in triode mode
  38. THX certification, or integrated near THX Quality,
  39. Feedback resistor on Baxandall tone stack?
  40. SE Pentode or PP Triode ?
  41. how does one "voice" a tube amp
  42. Musical fidelity Nu-Vista
  43. Tube substitutions in Heathkit W5M
  44. PSUD2 question
  45. 6L6 class A P-P CFB amp
  46. i have a matched pair of 3cx1000a7..
  47. Different silvering patterns on tube tops?
  48. Designing Guitar Amp's Project
  49. Help with amp rebuild
  50. Mystery (to me) phase inverter?
  51. Biasing
  52. SE KT88 Amp
  53. Good design?
  54. Auto Biasing
  55. nuvistor MC step up
  56. Corian for tube amp?
  57. 6AQ5 Line stage?
  58. 6550 o/p stage
  59. Help with finding preamp schematic
  60. AVO data for 8417 (Quicksilver) tubes
  61. Any experience with this nice toroidal OT?
  62. 300B SE cathode feedback to grid?
  63. hummmmmmm?
  64. ERO KP1832 Bypass Caps for sale
  65. no bass makes pedro a whiny boy
  66. Iron, glass, sand and lead.
  67. Is this any good? Considerations
  68. 2A3 SET Output Transformer opinions/recommendations
  69. My 6C45 DC 6C41, advice wanted
  70. DIY valve
  71. A good SE project?
  72. who will build me this special "line tubeamp"
  73. PI filters
  74. Designing a simple dc filament supply?
  75. Rogers Cadett amp
  76. HI & a few words/questions ...
  77. 6d22s
  78. eBay
  79. Chassis layout for Stereo JE Labs 300BDX
  80. Output transformer help
  81. CAD Program for Tubes
  82. 801A/816 tubes wanted
  83. This little thing might save your life!
  84. What happens if I loose the cathode bias?
  85. beginners ecl82 power supply
  86. 2MHz, High voltage source?
  87. beginner's ecl82
  88. Handmade Electronics Metal Punches?
  89. EL34 types
  90. Spice Model 6CW4
  91. El/pl 519
  92. Euridice symetric to Amp?
  93. use of 6dj8 as driver on a direct coupled 2a3 se amp
  94. Western Electric 275A Schematic
  95. Where to source 833 power tube
  96. capacitor reactance
  97. Overvoltaging resistors
  98. EL84 Push Pull amp.
  99. Power supply load capacity
  100. Tube preamp problem
  101. E88C (6DL4/ 8255), any circuit for it?
  102. Is there a name for this drive method?
  103. 6BM8 Question
  104. Tube mic preamp/mixer
  105. Please cast your votes..or make a suggestion or 2
  106. RIAA in LTspice
  107. Parallel ECC82 comment please
  108. A push-pull amp i can live with
  109. Sub-miniature russian amp help
  110. Tube Optical-Isolation Unit
  111. MKP in the Powersupply.
  112. 6SN7-GTB Globe (Chinese)
  113. 12BH7 Specs
  114. Is this worth my time?
  115. choke value
  116. ipod + tubes
  117. Leak tl/25+ OPT selection
  118. Gabevee's Maggie (MAG1515)
  119. Can partial feedback be as effective as global fb for decent damping factor?
  120. Which trans wire is which?
  121. What's wrong with this tube?
  122. F: great sound control with ECC82
  123. 30W UL 6L6P-P amp
  124. 300B stereo SE amp and PP2A3 monoblocks
  125. 6S45P matching
  126. Inductors made for crossover in an amp?
  127. PX4 or AVO44 or AV044 based SETA
  128. power conditioning
  129. Microphone preamp with compressor
  130. Current production rectifiers
  131. mu stage help...
  132. Non-Polar caps to cathode bypass
  133. 5u4 / solid state switchable supply
  134. 12AX7 sound ... going with the trend
  135. 6L6 PP Design Recommendations?
  136. EL 34 30W ultra linear
  137. Convert Audion Silver Knight PP monos
  138. Too much gain
  139. The long lost linear gain stage
  140. Philco power tranny diagram/5u4 supply
  141. Kt88 Se
  142. supersize me, please. (powersupply)
  143. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  144. Best 6CA7?
  145. ECC99 line preamp
  146. coupling caps???
  147. variable regulated negitive grid supply
  148. hum loop advice
  149. Against all odds...
  150. 6as7 se amp
  151. Help .. tube amplifier .. 1st !
  152. winding a toroidal pp output
  153. solid state Vs Tube Rectification
  154. Cryoed Tubes...what To Expect?
  155. I'm looking for 6H13C tubes
  156. Which ST-70 ?
  157. Some questions about Van Scoyoc X-coupled splitter
  158. Quicksilver 8417 bias runaway?
  159. Most effective use of valve pre & active xover
  160. Tube possibilities for 2.9k-ohm speaker?
  161. Help on Preamp Mute Switch
  162. Fixed bias supply problems...
  163. Help with VTL preamp...
  164. question about 811A and 572B
  165. Dual Stereo Cathode Folower Setup
  166. tube tester
  167. Audio Innovation 1000 SE
  168. 6as7 PP Schematic Help
  169. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  170. 7591EH failure
  171. opt frequency response
  172. Anyone got any opinions on this?
  173. My ForePlay Processor Controlled Preamp
  174. Tube ghetto blaster ?
  175. Help trouble shooting
  176. "The Fisher" tube amp 7189 output tubes
  177. UTC output transformers specs
  178. Regulation options for 807 g2
  179. My Mullard 5/20
  180. Anyone tried Black Beauty caps??
  181. KT88 power amp
  182. High voltage regulator
  183. Filament voltage ?
  184. Unity Gain Unbalanced to Balanced Phase Splitter
  185. Anyone know the g1-g2 capacitance of 6AU6?
  186. Any good Transformer or Tube manufactureres in India ?
  187. McMartin MA-20?
  188. Help with Jolida 302A
  189. need 13fd7 curves
  190. Drd Kt88?
  191. miniature tube amp
  192. 300B pp schematic found, what about it?
  193. Tube Output Stage
  194. se otl
  195. Toroidals as OPTs?
  196. Tube advice
  197. Understanding OPT primary Z and load matching.
  198. help with Optomal placement of output transformers.
  199. 50h B26
  200. Anyone know what this is?? Strange tube/ bulb.
  201. Please ID output transformer
  202. Cheap and Easy Tube Phono Preamp
  203. Carbon film vs metal film resistors in a stepped attenuator?
  204. Alps pots vs. TKD pots? TKD worth the extra$$?
  205. Opamp as tube driver: Protection ideas?
  206. Looking for schematics CROFT OTL APPARITION
  207. ISO (new Tango) info...
  208. Noob Question on Driver Stages
  209. High Voltage Reference
  210. DIY valve amp
  211. JJ multisection caps
  212. Inverted Interstage Transformer
  213. regarding to the design of iron-cored inductors (chokes)
  214. Trying to find an amp
  215. 12v tube output stage for cs43122 based dac?
  216. Wattages & Loudness: ?I'm Lost?
  217. cmrr of common cathode
  218. The Next Step. (and budget tube amplifier kits/designs).
  219. non-diy amplifiers with choke input power supplies
  220. Does a cathode bypass capacitor reduce hum?
  221. a tube convert tries a mosfet
  222. Motorboating in leak 20
  223. New MC preamp is comming alive
  224. HV tubes
  225. power supply pspice simulation problem
  226. Can a tube rectifier handle a C dual LC?
  227. Valve schematic & PC board design
  228. Just acqired some strange tubes.........
  229. Sovtek 6L6WXT
  230. RCA tubes, need info
  231. Stromberg Carlson 245M
  232. mounting tubes upside-down
  233. 6922 acting strange........or is it ?
  234. Fender Champ: What Transformers?
  235. Naive CCS quesion
  236. DIY scrap tubebuffer with ECC88
  237. choke current rating
  238. Velleman K8010
  239. film vs. electrolytic
  240. Tube mic preamp for speaker measurements
  241. 833a plate resistance ?
  242. second harmonic distortion
  243. Speakers not connected on tube amp, good or bad?
  244. different psu filter topologies ?
  245. Does anyone know this english amp ?
  246. kt88 power amplifier
  247. physical layout of 6B4G PP amp?
  248. Tube Life
  249. PSUD2 designer accuracy?
  250. Need advice on old 6bq5 amp...........

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