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  1. I need help
  2. 6AS7 Mono Block's
  3. Filter/Regulator for B+ Supply
  4. Ecf 83
  5. cheap but good SET amplifier?
  6. DRD calculator
  7. Luxkit A1020 need help!!!
  8. Sophia Electric™ 300B 2.5V Mesh Plate Tubes
  9. benifits of auto bias
  10. KR Enterprice
  11. Preamp Boards From Hong Kong
  12. earthing
  13. Best sounding medium priced EL34 tube?
  14. 6CA5 Rectifier - B2Spice Model
  15. Help needed for a 6L6 Push pull amp
  16. constant current filament regs
  17. 6SN7 Basics (Newbie)
  18. Anyone tried the EH fat bottle 6CA7?
  19. TJ Tubes
  20. My tubes are going down. HELP !!!!
  21. Tino Zottola...where are you ?
  22. Lilliput amp
  23. filament rails
  24. Ss Diodes??
  25. Tube mic preamp
  26. CCS Filament Regulators for split filaments
  27. Quicksilver 8417 power supply caps?
  28. Audio Research LS7
  29. simple valve preamp
  30. valve preamp
  31. stand by switch or not?
  32. Omega Grand 6 and which amp?
  33. Line amp to speakers
  34. a bit more bass?
  35. Output transformer application help please.
  36. 5687 pre...some problems
  37. Recommendations needed for designs of PP pentode strapped as Triode
  38. KT88 push pull noob questions (sry)
  39. Need help identifying Stromberg Carlson Amp
  40. help needed diagnosing Grounded Grid power supply
  41. Building a tube Model????
  42. EL34 best for triode strapping ?
  43. Subwoofer amp
  44. Replacing Valves
  45. help me on 845 scheme....
  46. Help valve newb salvage some old TV tubes
  47. Cathode follower distortion results
  48. Bullet Proof 6L6GC Recommendation PLEASE
  49. newbie recomendations please
  50. NOS Tubes
  51. Audio Research CA-50 tube rolling
  52. OT on Decaware SE84C-S
  53. Change PP Amp Into Phono Pre?
  54. pl84 ore el84
  55. VTL Compact 100 Monoblock x 2.
  56. Battery bias a 6SU7 in the 300b billies
  57. Speaker impedance roughly 6 ohms, 2A3 SET...
  58. B2 Spice SE tranformer parameters
  59. Determining cap values (old radio)
  60. thoughts on 300b operating points with 3k output
  61. Grounded Grid wiring question
  62. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  63. Found some EC8010
  64. SE PX4 or PX25 amp, anyone built one????????
  65. HAL-O Damping Instruments
  66. An intriguing 6S45P direct coupled 300B amplifier
  67. difference between Cayin and Jolida
  68. 417a line preamp help
  69. kenwood trio el84 push pull schematic
  70. Any comments on this design?
  71. Amp for speaker testing
  72. Shielding preamp power supply
  73. Troubleshooting EL34 push pull amp
  74. amp input volume
  75. What Mullard 12AX7 is better?
  76. Universal audio / Avalon mic pre schematics
  77. Since transconductance amps has become so popular lately...
  78. Mecanical PSU hum
  79. help i.d. this amplifier
  80. Question about a hybrid PSU design
  81. 35Z5GT half-wave rectifier
  82. what rating for diode of 450Volts DC
  83. Telefunken 6L6GC ???????
  84. Why are my amps doing this?
  85. How to calculate the gain of an input-driver stage?
  86. 6L6 vs EL34
  87. protect your amps
  88. Snap Ring Octal Sockets
  89. Suitable operating point for 6SN7 as a differential driver ?
  90. Suitable rectifier
  91. 6N1P & SV83 mu stage driving 845?
  92. Has anyone built a transformer coupled preamp?
  93. Circuit diagram for RCA vintage 6BQ5 amplifier?
  94. Driver valve discussion
  95. Help to choose the tubes!
  96. Why hum in one channel only?
  97. DC heater noise WORSE than AC
  98. Rdh 4
  99. 900v B+ Silly time.
  100. tube rectifier arrangement
  101. Matrix Amp?
  102. Dynaco Stereo 70 amplifier
  103. Ultimate power switch?
  104. AC or DC current for 300B and 2A3 tube filaments ?
  105. 0.1uF @ 3000V Ceramic?
  106. Power Triodes in current production
  107. Anyone in the world identify eico trans?
  108. Mullard 5-20 in triode mode
  109. THX certification, or integrated near THX Quality,
  110. Feedback resistor on Baxandall tone stack?
  111. SE Pentode or PP Triode ?
  112. how does one "voice" a tube amp
  113. Musical fidelity Nu-Vista
  114. Tube substitutions in Heathkit W5M
  115. PSUD2 question
  116. 6L6 class A P-P CFB amp
  117. i have a matched pair of 3cx1000a7..
  118. Different silvering patterns on tube tops?
  119. Help with amp rebuild
  120. Mystery (to me) phase inverter?
  121. Biasing
  122. SE KT88 Amp
  123. Good design?
  124. Auto Biasing
  125. nuvistor MC step up
  126. Corian for tube amp?
  127. 6AQ5 Line stage?
  128. 6550 o/p stage
  129. Help with finding preamp schematic
  130. Any experience with this nice toroidal OT?
  131. 300B SE cathode feedback to grid?
  132. hummmmmmm?
  133. no bass makes pedro a whiny boy
  134. Iron, glass, sand and lead.
  135. Is this any good? Considerations
  136. 2A3 SET Output Transformer opinions/recommendations
  137. My 6C45 DC 6C41, advice wanted
  138. DIY valve
  139. A good SE project?
  140. who will build me this special "line tubeamp"
  141. PI filters
  142. Designing a simple dc filament supply?
  143. Rogers Cadett amp
  144. HI & a few words/questions ...
  145. 6d22s
  146. eBay
  147. Chassis layout for Stereo JE Labs 300BDX
  148. Output transformer help
  149. CAD Program for Tubes
  150. 801A/816 tubes wanted
  151. This little thing might save your life!
  152. What happens if I loose the cathode bias?
  153. beginners ecl82 power supply
  154. 2MHz, High voltage source?
  155. beginner's ecl82
  156. Handmade Electronics Metal Punches?
  157. EL34 types
  158. Spice Model 6CW4
  159. El/pl 519
  160. Euridice symetric to Amp?
  161. use of 6dj8 as driver on a direct coupled 2a3 se amp
  162. Western Electric 275A Schematic
  163. Where to source 833 power tube
  164. capacitor reactance
  165. Overvoltaging resistors
  166. EL84 Push Pull amp.
  167. Power supply load capacity
  168. Tube preamp problem
  169. E88C (6DL4/ 8255), any circuit for it?
  170. Is there a name for this drive method?
  171. 6BM8 Question
  172. Tube mic preamp/mixer
  173. Please cast your votes..or make a suggestion or 2
  174. RIAA in LTspice
  175. Parallel ECC82 comment please
  176. A push-pull amp i can live with
  177. Sub-miniature russian amp help
  178. Tube Optical-Isolation Unit
  179. MKP in the Powersupply.
  180. 6SN7-GTB Globe (Chinese)
  181. 12BH7 Specs
  182. Is this worth my time?
  183. choke value
  184. ipod + tubes
  185. Leak tl/25+ OPT selection
  186. Gabevee's Maggie (MAG1515)
  187. Can partial feedback be as effective as global fb for decent damping factor?
  188. Which trans wire is which?
  189. What's wrong with this tube?
  190. F: great sound control with ECC82
  191. 30W UL 6L6P-P amp
  192. 300B stereo SE amp and PP2A3 monoblocks
  193. 6S45P matching
  194. Inductors made for crossover in an amp?
  195. PX4 or AVO44 or AV044 based SETA
  196. power conditioning
  197. Microphone preamp with compressor
  198. Current production rectifiers
  199. mu stage help...
  200. Non-Polar caps to cathode bypass
  201. 5u4 / solid state switchable supply
  202. 12AX7 sound ... going with the trend
  203. 6L6 PP Design Recommendations?
  204. EL 34 30W ultra linear
  205. Convert Audion Silver Knight PP monos
  206. Too much gain
  207. The long lost linear gain stage
  208. Philco power tranny diagram/5u4 supply
  209. Kt88 Se
  210. supersize me, please. (powersupply)
  211. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  212. Best 6CA7?
  213. ECC99 line preamp
  214. variable regulated negitive grid supply
  215. hum loop advice
  216. Against all odds...
  217. 6as7 se amp
  218. Help .. tube amplifier .. 1st !
  219. winding a toroidal pp output
  220. solid state Vs Tube Rectification
  221. Cryoed Tubes...what To Expect?
  222. I'm looking for 6H13C tubes
  223. Which ST-70 ?
  224. Some questions about Van Scoyoc X-coupled splitter
  225. Quicksilver 8417 bias runaway?
  226. Most effective use of valve pre & active xover
  227. Tube possibilities for 2.9k-ohm speaker?
  228. Help on Preamp Mute Switch
  229. Fixed bias supply problems...
  230. Help with VTL preamp...
  231. question about 811A and 572B
  232. Dual Stereo Cathode Folower Setup
  233. Audio Innovation 1000 SE
  234. 6as7 PP Schematic Help
  235. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  236. 7591EH failure
  237. opt frequency response
  238. Anyone got any opinions on this?
  239. My ForePlay Processor Controlled Preamp
  240. Tube ghetto blaster ?
  241. Help trouble shooting
  242. "The Fisher" tube amp 7189 output tubes
  243. UTC output transformers specs
  244. Regulation options for 807 g2
  245. My Mullard 5/20
  246. KT88 power amp
  247. High voltage regulator
  248. Filament voltage ?
  249. Unity Gain Unbalanced to Balanced Phase Splitter
  250. Anyone know the g1-g2 capacitance of 6AU6?

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