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  1. NOS Tubes
  2. Audio Research CA-50 tube rolling
  3. OT on Decaware SE84C-S
  4. Change PP Amp Into Phono Pre?
  5. pl84 ore el84
  6. VTL Compact 100 Monoblock x 2.
  7. Battery bias a 6SU7 in the 300b billies
  8. Speaker impedance roughly 6 ohms, 2A3 SET...
  9. B2 Spice SE tranformer parameters
  10. Determining cap values (old radio)
  11. thoughts on 300b operating points with 3k output
  12. Grounded Grid wiring question
  13. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  14. Found some EC8010
  15. SE PX4 or PX25 amp, anyone built one????????
  16. HAL-O Damping Instruments
  17. An intriguing 6S45P direct coupled 300B amplifier
  18. difference between Cayin and Jolida
  19. 417a line preamp help
  20. kenwood trio el84 push pull schematic
  21. Any comments on this design?
  22. Amp for speaker testing
  23. Shielding preamp power supply
  24. Troubleshooting EL34 push pull amp
  25. amp input volume
  26. What Mullard 12AX7 is better?
  27. Universal audio / Avalon mic pre schematics
  28. Since transconductance amps has become so popular lately...
  29. Mecanical PSU hum
  30. help i.d. this amplifier
  31. Question about a hybrid PSU design
  32. 35Z5GT half-wave rectifier
  33. Riviera 725 guitar tubes amp
  34. Best place to use 2 Jupiter Bee caps in tube amp?
  35. what rating for diode of 450Volts DC
  36. Telefunken 6L6GC ???????
  37. Why are my amps doing this?
  38. How to calculate the gain of an input-driver stage?
  39. 6L6 vs EL34
  40. protect your amps
  41. Snap Ring Octal Sockets
  42. Suitable operating point for 6SN7 as a differential driver ?
  43. Suitable rectifier
  44. 6N1P & SV83 mu stage driving 845?
  45. Has anyone built a transformer coupled preamp?
  46. Circuit diagram for RCA vintage 6BQ5 amplifier?
  47. Driver valve discussion
  48. Help to choose the tubes!
  49. Why hum in one channel only?
  50. DC heater noise WORSE than AC
  51. Rdh 4
  52. 900v B+ Silly time.
  53. tube rectifier arrangement
  54. Matrix Amp?
  55. Dynaco Stereo 70 amplifier
  56. Ultimate power switch?
  57. AC or DC current for 300B and 2A3 tube filaments ?
  58. 0.1uF @ 3000V Ceramic?
  59. Power Triodes in current production
  60. Anyone in the world identify eico trans?
  61. Mullard 5-20 in triode mode
  62. THX certification, or integrated near THX Quality,
  63. Feedback resistor on Baxandall tone stack?
  64. SE Pentode or PP Triode ?
  65. how does one "voice" a tube amp
  66. Musical fidelity Nu-Vista
  67. Tube substitutions in Heathkit W5M
  68. PSUD2 question
  69. 6L6 class A P-P CFB amp
  70. i have a matched pair of 3cx1000a7..
  71. Different silvering patterns on tube tops?
  72. Designing Guitar Amp's Project
  73. Help with amp rebuild
  74. Mystery (to me) phase inverter?
  75. Biasing
  76. SE KT88 Amp
  77. Good design?
  78. Auto Biasing
  79. nuvistor MC step up
  80. Corian for tube amp?
  81. 6AQ5 Line stage?
  82. 6550 o/p stage
  83. Help with finding preamp schematic
  84. AVO data for 8417 (Quicksilver) tubes
  85. Any experience with this nice toroidal OT?
  86. 300B SE cathode feedback to grid?
  87. hummmmmmm?
  88. ERO KP1832 Bypass Caps for sale
  89. no bass makes pedro a whiny boy
  90. Iron, glass, sand and lead.
  91. Is this any good? Considerations
  92. 2A3 SET Output Transformer opinions/recommendations
  93. My 6C45 DC 6C41, advice wanted
  94. DIY valve
  95. A good SE project?
  96. who will build me this special "line tubeamp"
  97. PI filters
  98. Designing a simple dc filament supply?
  99. Rogers Cadett amp
  100. HI & a few words/questions ...
  101. 6d22s
  102. eBay
  103. Chassis layout for Stereo JE Labs 300BDX
  104. Output transformer help
  105. CAD Program for Tubes
  106. 801A/816 tubes wanted
  107. This little thing might save your life!
  108. What happens if I loose the cathode bias?
  109. beginners ecl82 power supply
  110. 2MHz, High voltage source?
  111. beginner's ecl82
  112. Handmade Electronics Metal Punches?
  113. EL34 types
  114. Spice Model 6CW4
  115. El/pl 519
  116. Euridice symetric to Amp?
  117. use of 6dj8 as driver on a direct coupled 2a3 se amp
  118. Western Electric 275A Schematic
  119. Where to source 833 power tube
  120. capacitor reactance
  121. Overvoltaging resistors
  122. EL84 Push Pull amp.
  123. Power supply load capacity
  124. Tube preamp problem
  125. E88C (6DL4/ 8255), any circuit for it?
  126. Is there a name for this drive method?
  127. 6BM8 Question
  128. Tube mic preamp/mixer
  129. Please cast your votes..or make a suggestion or 2
  130. RIAA in LTspice
  131. Parallel ECC82 comment please
  132. A push-pull amp i can live with
  133. Sub-miniature russian amp help
  134. Tube Optical-Isolation Unit
  135. MKP in the Powersupply.
  136. 6SN7-GTB Globe (Chinese)
  137. 12BH7 Specs
  138. Is this worth my time?
  139. choke value
  140. ipod + tubes
  141. Leak tl/25+ OPT selection
  142. Gabevee's Maggie (MAG1515)
  143. Can partial feedback be as effective as global fb for decent damping factor?
  144. Which trans wire is which?
  145. What's wrong with this tube?
  146. F: great sound control with ECC82
  147. 30W UL 6L6P-P amp
  148. 300B stereo SE amp and PP2A3 monoblocks
  149. 6S45P matching
  150. Inductors made for crossover in an amp?
  151. PX4 or AVO44 or AV044 based SETA
  152. power conditioning
  153. Microphone preamp with compressor
  154. Current production rectifiers
  155. mu stage help...
  156. Non-Polar caps to cathode bypass
  157. 5u4 / solid state switchable supply
  158. 12AX7 sound ... going with the trend
  159. 6L6 PP Design Recommendations?
  160. EL 34 30W ultra linear
  161. Convert Audion Silver Knight PP monos
  162. Too much gain
  163. The long lost linear gain stage
  164. Philco power tranny diagram/5u4 supply
  165. Kt88 Se
  166. supersize me, please. (powersupply)
  167. Seeking advice on "Circlotron" cross-coupled feedback OTL design
  168. Best 6CA7?
  169. ECC99 line preamp
  170. coupling caps???
  171. variable regulated negitive grid supply
  172. hum loop advice
  173. Against all odds...
  174. 6as7 se amp
  175. Help .. tube amplifier .. 1st !
  176. winding a toroidal pp output
  177. solid state Vs Tube Rectification
  178. Cryoed Tubes...what To Expect?
  179. I'm looking for 6H13C tubes
  180. Which ST-70 ?
  181. Some questions about Van Scoyoc X-coupled splitter
  182. Quicksilver 8417 bias runaway?
  183. Most effective use of valve pre & active xover
  184. Tube possibilities for 2.9k-ohm speaker?
  185. Help on Preamp Mute Switch
  186. Fixed bias supply problems...
  187. Help with VTL preamp...
  188. question about 811A and 572B
  189. Dual Stereo Cathode Folower Setup
  190. tube tester
  191. Audio Innovation 1000 SE
  192. 6as7 PP Schematic Help
  193. Newbie Question: Need help diagnosing a problem, tubes on, music fades out quickly
  194. 7591EH failure
  195. opt frequency response
  196. Anyone got any opinions on this?
  197. My ForePlay Processor Controlled Preamp
  198. Tube ghetto blaster ?
  199. Help trouble shooting
  200. "The Fisher" tube amp 7189 output tubes
  201. UTC output transformers specs
  202. Regulation options for 807 g2
  203. My Mullard 5/20
  204. Anyone tried Black Beauty caps??
  205. KT88 power amp
  206. High voltage regulator
  207. Filament voltage ?
  208. Unity Gain Unbalanced to Balanced Phase Splitter
  209. Anyone know the g1-g2 capacitance of 6AU6?
  210. Any good Transformer or Tube manufactureres in India ?
  211. McMartin MA-20?
  212. Help with Jolida 302A
  213. need 13fd7 curves
  214. Drd Kt88?
  215. miniature tube amp
  216. 300B pp schematic found, what about it?
  217. Tube Output Stage
  218. se otl
  219. Toroidals as OPTs?
  220. Tube advice
  221. Understanding OPT primary Z and load matching.
  222. help with Optomal placement of output transformers.
  223. 50h B26
  224. Anyone know what this is?? Strange tube/ bulb.
  225. Please ID output transformer
  226. Cheap and Easy Tube Phono Preamp
  227. Carbon film vs metal film resistors in a stepped attenuator?
  228. Alps pots vs. TKD pots? TKD worth the extra$$?
  229. Opamp as tube driver: Protection ideas?
  230. Looking for schematics CROFT OTL APPARITION
  231. ISO (new Tango) info...
  232. Noob Question on Driver Stages
  233. High Voltage Reference
  234. DIY valve amp
  235. JJ multisection caps
  236. Inverted Interstage Transformer
  237. regarding to the design of iron-cored inductors (chokes)
  238. Trying to find an amp
  239. 12v tube output stage for cs43122 based dac?
  240. Wattages & Loudness: ?I'm Lost?
  241. cmrr of common cathode
  242. The Next Step. (and budget tube amplifier kits/designs).
  243. non-diy amplifiers with choke input power supplies
  244. Does a cathode bypass capacitor reduce hum?
  245. a tube convert tries a mosfet
  246. Motorboating in leak 20
  247. New MC preamp is comming alive
  248. HV tubes
  249. power supply pspice simulation problem
  250. Can a tube rectifier handle a C dual LC?

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