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  1. Heating only one half of a double triode
  2. Quick question regarding PSU Designer II
  3. calculate +B in EL34 SE triode conect
  4. Help with driver transformer
  5. Tube buffer for a cd player
  6. VSE riaa equalizer phono stage
  7. AC or DC Heater?
  8. looking for a good valve amp to fix
  9. Best operating point for 7044 and 5687
  10. S&B TX102 and preamplier stages
  11. I need help
  12. 6AS7 Mono Block's
  13. Filter/Regulator for B+ Supply
  14. Ecf 83
  15. cheap but good SET amplifier?
  16. DRD calculator
  17. Luxkit A1020 need help!!!
  18. Sophia Electric™ 300B 2.5V Mesh Plate Tubes
  19. benifits of auto bias
  20. KR Enterprice
  21. Preamp Boards From Hong Kong
  22. earthing
  23. Best sounding medium priced EL34 tube?
  24. 6CA5 Rectifier - B2Spice Model
  25. Help needed for a 6L6 Push pull amp
  26. constant current filament regs
  27. 6SN7 Basics (Newbie)
  28. Anyone tried the EH fat bottle 6CA7?
  29. TJ Tubes
  30. My tubes are going down. HELP !!!!
  31. Tino Zottola...where are you ?
  32. Lilliput amp
  33. filament rails
  34. Ss Diodes??
  35. Tube mic preamp
  36. CCS Filament Regulators for split filaments
  37. Quicksilver 8417 power supply caps?
  38. Audio Research LS7
  39. simple valve preamp
  40. valve preamp
  41. stand by switch or not?
  42. Omega Grand 6 and which amp?
  43. Line amp to speakers
  44. a bit more bass?
  45. Output transformer application help please.
  46. 5687 pre...some problems
  47. Recommendations needed for designs of PP pentode strapped as Triode
  48. KT88 push pull noob questions (sry)
  49. Need help identifying Stromberg Carlson Amp
  50. help needed diagnosing Grounded Grid power supply
  51. Building a tube Model????
  52. EL34 best for triode strapping ?
  53. Subwoofer amp
  54. Replacing Valves
  55. help me on 845 scheme....
  56. Help valve newb salvage some old TV tubes
  57. Cathode follower distortion results
  58. Bullet Proof 6L6GC Recommendation PLEASE
  59. newbie recomendations please
  60. NOS Tubes
  61. Audio Research CA-50 tube rolling
  62. OT on Decaware SE84C-S
  63. Change PP Amp Into Phono Pre?
  64. pl84 ore el84
  65. VTL Compact 100 Monoblock x 2.
  66. Battery bias a 6SU7 in the 300b billies
  67. Speaker impedance roughly 6 ohms, 2A3 SET...
  68. B2 Spice SE tranformer parameters
  69. Determining cap values (old radio)
  70. thoughts on 300b operating points with 3k output
  71. Grounded Grid wiring question
  72. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  73. Found some EC8010
  74. SE PX4 or PX25 amp, anyone built one????????
  75. HAL-O Damping Instruments
  76. An intriguing 6S45P direct coupled 300B amplifier
  77. difference between Cayin and Jolida
  78. 417a line preamp help
  79. kenwood trio el84 push pull schematic
  80. Any comments on this design?
  81. Amp for speaker testing
  82. Shielding preamp power supply
  83. Troubleshooting EL34 push pull amp
  84. amp input volume
  85. What Mullard 12AX7 is better?
  86. Universal audio / Avalon mic pre schematics
  87. Since transconductance amps has become so popular lately...
  88. Mecanical PSU hum
  89. help i.d. this amplifier
  90. Question about a hybrid PSU design
  91. 35Z5GT half-wave rectifier
  92. Riviera 725 guitar tubes amp
  93. Best place to use 2 Jupiter Bee caps in tube amp?
  94. what rating for diode of 450Volts DC
  95. Telefunken 6L6GC ???????
  96. Why are my amps doing this?
  97. How to calculate the gain of an input-driver stage?
  98. 6L6 vs EL34
  99. protect your amps
  100. Snap Ring Octal Sockets
  101. Suitable operating point for 6SN7 as a differential driver ?
  102. Suitable rectifier
  103. 6N1P & SV83 mu stage driving 845?
  104. Has anyone built a transformer coupled preamp?
  105. Circuit diagram for RCA vintage 6BQ5 amplifier?
  106. Driver valve discussion
  107. Help to choose the tubes!
  108. Why hum in one channel only?
  109. DC heater noise WORSE than AC
  110. Rdh 4
  111. 900v B+ Silly time.
  112. tube rectifier arrangement
  113. Matrix Amp?
  114. Dynaco Stereo 70 amplifier
  115. Ultimate power switch?
  116. AC or DC current for 300B and 2A3 tube filaments ?
  117. 0.1uF @ 3000V Ceramic?
  118. Power Triodes in current production
  119. Anyone in the world identify eico trans?
  120. Mullard 5-20 in triode mode
  121. THX certification, or integrated near THX Quality,
  122. Feedback resistor on Baxandall tone stack?
  123. SE Pentode or PP Triode ?
  124. how does one "voice" a tube amp
  125. Musical fidelity Nu-Vista
  126. Tube substitutions in Heathkit W5M
  127. PSUD2 question
  128. 6L6 class A P-P CFB amp
  129. i have a matched pair of 3cx1000a7..
  130. Different silvering patterns on tube tops?
  131. Designing Guitar Amp's Project
  132. Help with amp rebuild
  133. Mystery (to me) phase inverter?
  134. Biasing
  135. SE KT88 Amp
  136. Good design?
  137. Auto Biasing
  138. nuvistor MC step up
  139. Corian for tube amp?
  140. 6AQ5 Line stage?
  141. 6550 o/p stage
  142. Help with finding preamp schematic
  143. AVO data for 8417 (Quicksilver) tubes
  144. Any experience with this nice toroidal OT?
  145. 300B SE cathode feedback to grid?
  146. hummmmmmm?
  147. ERO KP1832 Bypass Caps for sale
  148. no bass makes pedro a whiny boy
  149. Iron, glass, sand and lead.
  150. Is this any good? Considerations
  151. 2A3 SET Output Transformer opinions/recommendations
  152. My 6C45 DC 6C41, advice wanted
  153. DIY valve
  154. A good SE project?
  155. who will build me this special "line tubeamp"
  156. PI filters
  157. Designing a simple dc filament supply?
  158. Rogers Cadett amp
  159. HI & a few words/questions ...
  160. 6d22s
  161. eBay
  162. Chassis layout for Stereo JE Labs 300BDX
  163. Output transformer help
  164. CAD Program for Tubes
  165. 801A/816 tubes wanted
  166. This little thing might save your life!
  167. What happens if I loose the cathode bias?
  168. beginners ecl82 power supply
  169. 2MHz, High voltage source?
  170. beginner's ecl82
  171. Handmade Electronics Metal Punches?
  172. EL34 types
  173. Spice Model 6CW4
  174. El/pl 519
  175. Euridice symetric to Amp?
  176. use of 6dj8 as driver on a direct coupled 2a3 se amp
  177. Western Electric 275A Schematic
  178. Where to source 833 power tube
  179. capacitor reactance
  180. Overvoltaging resistors
  181. EL84 Push Pull amp.
  182. Power supply load capacity
  183. Tube preamp problem
  184. E88C (6DL4/ 8255), any circuit for it?
  185. Is there a name for this drive method?
  186. 6BM8 Question
  187. Tube mic preamp/mixer
  188. Please cast your votes..or make a suggestion or 2
  189. RIAA in LTspice
  190. Parallel ECC82 comment please
  191. A push-pull amp i can live with
  192. Sub-miniature russian amp help
  193. Tube Optical-Isolation Unit
  194. MKP in the Powersupply.
  195. 6SN7-GTB Globe (Chinese)
  196. 12BH7 Specs
  197. Is this worth my time?
  198. choke value
  199. ipod + tubes
  200. Leak tl/25+ OPT selection
  201. Gabevee's Maggie (MAG1515)
  202. Can partial feedback be as effective as global fb for decent damping factor?
  203. Which trans wire is which?
  204. What's wrong with this tube?
  205. F: great sound control with ECC82
  206. 30W UL 6L6P-P amp
  207. 300B stereo SE amp and PP2A3 monoblocks
  208. 6S45P matching
  209. Inductors made for crossover in an amp?
  210. PX4 or AVO44 or AV044 based SETA
  211. power conditioning
  212. Microphone preamp with compressor
  213. Current production rectifiers
  214. mu stage help...
  215. Non-Polar caps to cathode bypass
  216. 5u4 / solid state switchable supply
  217. 12AX7 sound ... going with the trend
  218. 6L6 PP Design Recommendations?
  219. EL 34 30W ultra linear
  220. Convert Audion Silver Knight PP monos
  221. Too much gain
  222. The long lost linear gain stage
  223. Philco power tranny diagram/5u4 supply
  224. Kt88 Se
  225. supersize me, please. (powersupply)
  226. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  227. Best 6CA7?
  228. ECC99 line preamp
  229. coupling caps???
  230. variable regulated negitive grid supply
  231. hum loop advice
  232. Against all odds...
  233. 6as7 se amp
  234. Help .. tube amplifier .. 1st !
  235. winding a toroidal pp output
  236. solid state Vs Tube Rectification
  237. Cryoed Tubes...what To Expect?
  238. I'm looking for 6H13C tubes
  239. Which ST-70 ?
  240. Some questions about Van Scoyoc X-coupled splitter
  241. Quicksilver 8417 bias runaway?
  242. Most effective use of valve pre & active xover
  243. Tube possibilities for 2.9k-ohm speaker?
  244. Help on Preamp Mute Switch
  245. Fixed bias supply problems...
  246. Help with VTL preamp...
  247. question about 811A and 572B
  248. Dual Stereo Cathode Folower Setup
  249. tube tester
  250. Audio Innovation 1000 SE

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