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  1. SE (UL ?) HI FI project needs help
  2. Can anyone verify this math? MC 2205 Watt Scale
  3. Generic design question for Pentode CCS
  4. Using big power tubes as buffer?
  5. Reason for tube converter
  6. Valve Mosfet Hybrids: a solution
  7. Protecting Plitron OPT
  8. DHT line stage 26, 01a or 101d
  9. Tube manufacturers
  10. Pinnacle Datasheets
  11. Tube preamp
  12. Can I use 1.1 instead of .47
  13. Project: Add a DAC to Pete Millett's low voltage hybrid tube amp
  14. Speakers for S5 K-16LS Kit
  15. Inexpensive B+ Batteries
  16. Leak Stereo 20 Capacitor Replacement Question
  17. Dynaco Mark IV exploding bias filter capacitor
  18. Anyone familiar with the Raphaelite sinovt 2a3-845
  19. Building monoblocks, go Dynaco MKIII or.....?
  20. Priboi (Surf :d) output transformer possible problem
  21. replacing ECC83 with ECC82 in stereo amp
  22. Counterpoint SA-5000 FET Buffer
  23. C3M 300B SET build, input appreciated.
  24. K12G Quiet Channel
  25. Weird "holes" in getter
  26. Radiotron A530 6J7G-6V6G-2A3 PP Amp
  27. Tube Identification
  28. Can i sub a 50K for a 100K volume control?
  29. Are the 12B4 and 12b4A interchangable?
  30. SE or PSE amplifier with 6N6P driving the 300B tube
  31. About 300B SE heater w/t Coleman regulator
  32. Should my TVC x formers be input or output
  33. Preamp Chassis Layout Advice
  34. Russian Audio Tubes
  35. SE UL EL 300 / ECC 83
  36. Grid Chokes
  37. Pot for project test
  38. Interpreting "Horizontal Osc. Service"
  39. My Take on a DIY Valve tester
  40. 6Н6П vs 6Н6П-И (gold grid etc claims ? )
  41. GU 19 VS GU 19-1 What's the difference ?
  42. please advice 1K Vdc power supply
  43. Has anyone used an opamp to split phase for a tube amp?
  44. Advice for budget valve amplifier
  45. S-5 Electronoics K-12M amplifier: lack of plate to grid coupling caps
  46. Eico ST70 needs a preamp output....
  47. Damper diode slow start
  48. KT150 SE based on Mikael's KT88 Schematic
  49. Octal driver tube choice
  50. Anyone ever clone a Audionote P1 SE
  51. Bogen DB212 phase-inverter
  52. EAR 869
  53. # triode 31 line pre amp
  54. Choosing The Iron For A SE OPT?
  55. Swap EL34 with 6L6 or 6V6
  56. Bridgeable floating output transformer help
  57. tapedeck playback amplifier
  58. Design based on the Output Transformer
  59. UL Push-Pull Tube Amp (mono combo)
  60. Power transformer for SET: toroid vs EI core
  61. can I use 12v to run 6C33C tubes???
  62. How to understand the data sheet for this 'universal' SE output transformer?
  63. DIY Stereo Amp
  64. el84 and 6aw8a
  65. Tube amp reboot Re: Chinese 6P6P (6V6) Push-Pull Tube Amplifier Kit
  66. 2A3 driver
  67. Tube Phono Preamps
  68. Newbie. Balanced 2A3 SE amplifier information
  69. Tube rectifier supply help
  70. cathode follower - please check my circuit
  71. Output tube stage 1578 for no DAC
  72. Bias for 300B
  73. Pots value in tube equalizer
  74. 'Real world' max plate voltages for 6DJ8, 6P15P?
  75. Lower load resistance for lower distortion (6L6 PP)
  76. Transformer Hum.
  77. Hmmmm Star ground
  78. Taylor T20 triode - anyone used these?
  79. Filament DC power supply for 2 valves
  80. Tubes availability
  81. Tube power amp bad fit for ML?
  82. SLA Battery (Filament Supply) DC Reference limits?
  83. Citation I, Citation II, and another Citation I
  84. tube amp damping / weird bass response, speaker movement
  85. Convert valve output stage to pre amp
  86. 6HJ5 SET
  87. A different type of EL84 SE
  88. Transformer covers; steel or aly?
  89. Opinions on SET transformers for 307a amp
  90. Strange experience with Dynaco ST70 input tubes
  91. Need advice regarding SET 45 Amplifier
  92. "Low" B+ Voltage Amplifiers
  93. Small power all russian tubes single ended amp
  94. Noob question on triode
  95. Can I mount Plate chokes next to OPTs???
  96. R-3389A Schematic?
  97. tube baxandall tone control potentiometer resistance value
  98. Can you help me identify these burned resistors?
  99. Do i have a problem with my DC filaments?
  100. Recommendations please. Octal sockets.
  101. metal can capacitors
  102. Dynaco Mark IV selenium rectifier replacement
  103. Elekit 8200 Tube rolling
  104. Girlfriend Wants to Build One
  105. Moskido Hybrid Aikido-MOSFET Amplifier
  106. Modified ST70 with extra tube sockets?!?!
  107. Wanted: ExpressPCB component layout for 7 pin socket
  108. Eliminating balance controls on Eico st70
  109. APPJ PA0901A anyone?
  110. 90wpc from push pull KT88?
  111. Help guessing amplifier model
  112. unusual SET amp design, your thoughts please
  113. Siemens e83cc Long plate triple mica?
  114. Help identafying 2 Output Transoromers?
  115. Tube Rectified Power Supplies
  116. Audio Nirvana 300B SET amp.
  117. Plotting plate curves past dissipation limit
  118. Massive Old Console... Repair or gut and replace with modern stuff?
  119. Tap Cap?
  120. OLD vs NEW tube amplifier circuits
  121. Who Made These Amps.
  122. An Amp oddity
  123. Linyun 300B Luxury edition
  124. Can plate chokes be THAT different?
  125. Pye HF25 Tube Monoblocks: Restoring Legends
  126. Millett Hybrid headphone amp.
  127. 6n2p-ev
  128. Idea for driver for CF output stage
  129. Problem with KT88 Williamson LTSpice simulation
  130. voltage regulator tubes
  131. Input impedance of grounded grid stage?
  132. tube upgrade benefits , worth the money ? 6R3S-1 , EF86
  133. Riaa MM high gain, low impedance.
  134. increase live 211 tube
  135. Need help with OPT for Loewe Opta Apollo Stereo
  136. Potentiometer & Power Switch Help
  137. Audio Note M2 Riaa.
  138. Is it the end of Blackburn Microtech tubes?
  139. Please critique my PSU design
  140. Audio Novice
  141. What vintage gear to source for tubes and transformers?
  142. 6n6p source
  143. (2) 6AV6 instead of 12ax7
  144. Preamp mod with tone control - comment please
  145. Roland branded 12AX7 tube?
  146. Questions about updates/upgrades
  147. When doubling output-tubes: What needs to be considered ?
  148. Audio Research SP-10 help needed
  149. Safety Tip For The Day
  150. PSU Output: Tubecad PS-1 Question
  151. Micro Channel Plate (MCP) audio amplifier
  152. bell mod 2445
  153. found a vintage dynacord concert el84 amp
  154. Stability problems, help please?
  155. Do I NEED to bring up an old amp on veriac?
  156. 6P15 / EL84 Sort of Para-Feed, Cathode-Drive, Hybrid
  157. Crosstalk L-R. Acceptable levels?
  158. Yaqin MS MC - 30L Amp
  159. www.pimmlabs.com not available
  160. vibration resistant preamp tube
  161. Direct Heated Valve in Series - Channel Separation Question
  162. So i was going into Tosche Station to pick up some power converters . . .
  163. a sub crossover idea
  164. Understanding power supply
  165. 12AX7 Class 2 (Positive Grid Voltage) Operation
  166. All triode 250 watt western electric
  167. Telefunken EL34 data sheet
  168. Using a 6J1 tube amp as a final stage?
  169. Anyone use 872-A Mercury Vapor Rectifier Tube
  170. Need recapping tube radio advice
  171. Thinking about getting Philco model 14
  172. Mixed Bias for an EL34 ? Any recommendations / experience ?
  173. PP oscillation with toroid output transformer
  174. 6B4G New Amp Build Issue
  175. Mable Audio 300B Amp KitI
  176. Help me understand - 7061 vs. 12ab5 (and the rest of the 6V6 family)
  177. ebay seller jellyfishaudio
  178. 866a rectifier on 6.3vct@10A
  179. Vintage tube preamp design
  180. Output Transformer Wiring
  181. Ground loop problems
  182. Reversed preamp OPT as IPT
  183. A2 p-p with Millett driver
  184. DC filament supply schematic
  185. Mystery tube
  186. 6eu7/6bq5 feedback question
  187. Ultimate Ultralinear Amp...please help to understand...
  188. Mullard 20 Watt Amp
  189. Transformer feedback winding: Tamura HN-1
  190. the big one
  191. ECC33 vs 6SN7 - Implications I should know?
  192. What is a Source Measure unit (SMU)?
  193. Building a tube amp from scratch
  194. Priboj (priboi) 50, small problem (SOVIET TUBE AMP)
  195. Kellogg (Dukane?) Tube PA Amp
  196. APPJ PA1501
  197. New production 6L6GC tubes and similar
  198. Knight 10W 6V6 push-pull tube power amp
  199. 480vct at 50VA for less than $12 shipped
  200. Pioneer SA-81 integrated tube amp
  201. 12B4 Preamp Design/Pre-build Questions
  202. Can I mount a 5R4WGA at a 10 degree angle?
  203. plate current variation with fixed bias
  204. 5693 issue
  205. Hum SOLVED!!!!
  206. Garage System Control/Preamp idea
  207. Aikido Octal line stage kit info needed
  208. Phonola suitcase player...now, with hum!
  209. My latests (well ... first) RIAA preamp
  210. 12at7 one side drawers 10% more current
  211. Upgrade output transfomers, EL34 single-ended
  212. cleaning tubes / valves
  213. a simple (I think) Baxandall question
  214. Paoli Model 60M help
  215. Should something be done about these traces?
  216. 300(may)B(e) - Recs & Advice
  217. LNF in gain stage or CF?
  218. KT77 at 790 V
  219. Newb question about tube socket placement
  220. my first tube amp project
  221. Unusual Schematic help
  222. 12AX7 vs 12AT7 vs 12AU7
  223. 6SN7 Distortion Canceling in Amp
  224. D-115 w/ weak channel
  225. MOSFET Follower Choices
  226. Sanity check my unlabeled transformer guesstimates? Fisher X-200 power trafo
  227. Mystery Tube Time
  228. PSU simulation help
  229. Vacuum tubes and wire wrap
  230. LTP phase splitter as output stage?
  231. Swap 6B4G for 6SL7 SRPP ?
  232. Need Fuse Values for 6922 Tube Premp, 6.3v & B+ Fuse Value
  233. 12AX7 tone control with low B+ voltage
  234. Cathodefollower and strange behaviour with lowering of anode voltage.
  235. Early Audio Research Dual 100 Schematic?
  236. current drive
  237. Bench Supply
  238. 6X5 GT Hybrid rectifier
  239. small shrouded PP OPT choices ?
  240. Single triode instead of double triode?
  241. Low noise valve tube circuit ideas for cassette deck
  242. Found a box of various 9 pin tubes....
  243. 12AU7 internally matched triodes
  244. Homemade tube socket adaptor
  245. Who's mark was on this obvious 6n23p?
  246. Thoughts on amp mods
  247. Just a quick thanks to you guys
  248. Low voltage tube line preamp
  249. What the difference between 6H7C & 6H8C tubes
  250. Headphone amp OTL

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