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  1. Speakers for S5 K-16LS Kit
  2. Inexpensive B+ Batteries
  3. Leak Stereo 20 Capacitor Replacement Question
  4. Dynaco Mark IV exploding bias filter capacitor
  5. Anyone familiar with the Raphaelite sinovt 2a3-845
  6. Building monoblocks, go Dynaco MKIII or.....?
  7. Priboi (Surf :d) output transformer possible problem
  8. replacing ECC83 with ECC82 in stereo amp
  9. Counterpoint SA-5000 FET Buffer
  10. C3M 300B SET build, input appreciated.
  11. K12G Quiet Channel
  12. Weird "holes" in getter
  13. Radiotron A530 6J7G-6V6G-2A3 PP Amp
  14. Tube Identification
  15. Can i sub a 50K for a 100K volume control?
  16. Are the 12B4 and 12b4A interchangable?
  17. SE or PSE amplifier with 6N6P driving the 300B tube
  18. About 300B SE heater w/t Coleman regulator
  19. Should my TVC x formers be input or output
  20. Preamp Chassis Layout Advice
  21. Russian Audio Tubes
  22. SE UL EL 300 / ECC 83
  23. Grid Chokes
  24. Pot for project test
  25. Interpreting "Horizontal Osc. Service"
  26. My Take on a DIY Valve tester
  27. 6Н6П vs 6Н6П-И (gold grid etc claims ? )
  28. GU 19 VS GU 19-1 What's the difference ?
  29. please advice 1K Vdc power supply
  30. Has anyone used an opamp to split phase for a tube amp?
  31. Advice for budget valve amplifier
  32. S-5 Electronoics K-12M amplifier: lack of plate to grid coupling caps
  33. Eico ST70 needs a preamp output....
  34. Damper diode slow start
  35. KT150 SE based on Mikael's KT88 Schematic
  36. Oil filled capacitor
  37. Octal driver tube choice
  38. Anyone ever clone a Audionote P1 SE
  39. Bogen DB212 phase-inverter
  40. EAR 869
  41. # triode 31 line pre amp
  42. Choosing The Iron For A SE OPT?
  43. Swap EL34 with 6L6 or 6V6
  44. Bridgeable floating output transformer help
  45. tapedeck playback amplifier
  46. Design based on the Output Transformer
  47. UL Push-Pull Tube Amp (mono combo)
  48. Power transformer for SET: toroid vs EI core
  49. Tektronix 547 Oscilloscope reserection
  50. can I use 12v to run 6C33C tubes???
  51. How to understand the data sheet for this 'universal' SE output transformer?
  52. DIY Stereo Amp
  53. el84 and 6aw8a
  54. Tube amp reboot Re: Chinese 6P6P (6V6) Push-Pull Tube Amplifier Kit
  55. 2A3 driver
  56. Tube Phono Preamps
  57. Newbie. Balanced 2A3 SE amplifier information
  58. Tube rectifier supply help
  59. cathode follower - please check my circuit
  60. Output tube stage 1578 for no DAC
  61. Bias for 300B
  62. Pots value in tube equalizer
  63. 'Real world' max plate voltages for 6DJ8, 6P15P?
  64. Lower load resistance for lower distortion (6L6 PP)
  65. Transformer Hum.
  66. Hmmmm Star ground
  67. Updating a HeathKit IT-11 capacitor checker
  68. Taylor T20 triode - anyone used these?
  69. Filament DC power supply for 2 valves
  70. Tubes availability
  71. Tube power amp bad fit for ML?
  72. SLA Battery (Filament Supply) DC Reference limits?
  73. Citation I, Citation II, and another Citation I
  74. tube amp damping / weird bass response, speaker movement
  75. Convert valve output stage to pre amp
  76. 6HJ5 SET
  77. A different type of EL84 SE
  78. Transformer covers; steel or aly?
  79. Triplett 3444A tube chart
  80. polyester or polypropylene or other??
  81. Opinions on SET transformers for 307a amp
  82. Strange experience with Dynaco ST70 input tubes
  83. Need advice regarding SET 45 Amplifier
  84. "Low" B+ Voltage Amplifiers
  85. Small power all russian tubes single ended amp
  86. Noob question on triode
  87. Good capacitors for tight space
  88. Can I mount Plate chokes next to OPTs???
  89. R-3389A Schematic?
  90. tube baxandall tone control potentiometer resistance value
  91. Can you help me identify these burned resistors?
  92. Do i have a problem with my DC filaments?
  93. Recommendations please. Octal sockets.
  94. metal can capacitors
  95. Dynaco Mark IV selenium rectifier replacement
  96. Elekit 8200 Tube rolling
  97. Girlfriend Wants to Build One
  98. Moskido Hybrid Aikido-MOSFET Amplifier
  99. Modified ST70 with extra tube sockets?!?!
  100. Wanted: ExpressPCB component layout for 7 pin socket
  101. Eliminating balance controls on Eico st70
  102. APPJ PA0901A anyone?
  103. 90wpc from push pull KT88?
  104. Help guessing amplifier model
  105. unusual SET amp design, your thoughts please
  106. Capacitor type for tube preamp
  107. Siemens e83cc Long plate triple mica?
  108. Help identafying 2 Output Transoromers?
  109. Tube Rectified Power Supplies
  110. Audio Nirvana 300B SET amp.
  111. Plotting plate curves past dissipation limit
  112. Massive Old Console... Repair or gut and replace with modern stuff?
  113. Tap Cap?
  114. OLD vs NEW tube amplifier circuits
  115. Who Made These Amps.
  116. An Amp oddity
  117. Linyun 300B Luxury edition
  118. Can plate chokes be THAT different?
  119. Pye HF25 Tube Monoblocks: Restoring Legends
  120. Millett Hybrid headphone amp.
  121. 6n2p-ev
  122. Idea for driver for CF output stage
  123. Problem with KT88 Williamson LTSpice simulation
  124. voltage regulator tubes
  125. Input impedance of grounded grid stage?
  126. tube upgrade benefits , worth the money ? 6R3S-1 , EF86
  127. Riaa MM high gain, low impedance.
  128. increase live 211 tube
  129. Need help with OPT for Loewe Opta Apollo Stereo
  130. Potentiometer & Power Switch Help
  131. Audio Note M2 Riaa.
  132. Is it the end of Blackburn Microtech tubes?
  133. Please critique my PSU design
  134. Audio Novice
  135. What vintage gear to source for tubes and transformers?
  136. 6n6p source
  137. (2) 6AV6 instead of 12ax7
  138. Preamp mod with tone control - comment please
  139. Roland branded 12AX7 tube?
  140. Questions about updates/upgrades
  141. When doubling output-tubes: What needs to be considered ?
  142. Audio Research SP-10 help needed
  143. Safety Tip For The Day
  144. PSU Output: Tubecad PS-1 Question
  145. Micro Channel Plate (MCP) audio amplifier
  146. bell mod 2445
  147. found a vintage dynacord concert el84 amp
  148. Stability problems, help please?
  149. Do I NEED to bring up an old amp on veriac?
  150. 6P15 / EL84 Sort of Para-Feed, Cathode-Drive, Hybrid
  151. Crosstalk L-R. Acceptable levels?
  152. Electronic diagramming tools with power and output transformer symbols
  153. Yaqin MS MC - 30L Amp
  154. www.pimmlabs.com not available
  155. vibration resistant preamp tube
  156. Direct Heated Valve in Series - Channel Separation Question
  157. So i was going into Tosche Station to pick up some power converters . . .
  158. a sub crossover idea
  159. Understanding power supply
  160. 12AX7 Class 2 (Positive Grid Voltage) Operation
  161. Oversized Supplemental Capacitor - Is it really needed?
  162. Edcor transformers TubeLab SPP
  163. All triode 250 watt western electric
  164. Telefunken EL34 data sheet
  165. Using a 6J1 tube amp as a final stage?
  166. Anyone use 872-A Mercury Vapor Rectifier Tube
  167. Need recapping tube radio advice
  168. Russian Capacitors
  169. Thinking about getting Philco model 14
  170. Mixed Bias for an EL34 ? Any recommendations / experience ?
  171. PP oscillation with toroid output transformer
  172. 6B4G New Amp Build Issue
  173. Mable Audio 300B Amp KitI
  174. Help me understand - 7061 vs. 12ab5 (and the rest of the 6V6 family)
  175. ebay seller jellyfishaudio
  176. DIY Tubelab SSE build keeps blowing fuses when turned on.
  177. 866a rectifier on 6.3vct@10A
  178. Vintage tube preamp design
  179. Output Transformer Wiring
  180. Ground loop problems
  181. Reversed preamp OPT as IPT
  182. A2 p-p with Millett driver
  183. DC filament supply schematic
  184. Mystery tube
  185. 6eu7/6bq5 feedback question
  186. Ultimate Ultralinear Amp...please help to understand...
  187. Mullard 20 Watt Amp
  188. Transformer feedback winding: Tamura HN-1
  189. the big one
  190. ECC33 vs 6SN7 - Implications I should know?
  191. What is a Source Measure unit (SMU)?
  192. Building a tube amp from scratch
  193. Priboj (priboi) 50, small problem (SOVIET TUBE AMP)
  194. Kellogg (Dukane?) Tube PA Amp
  195. APPJ PA1501
  196. New production 6L6GC tubes and similar
  197. Knight 10W 6V6 push-pull tube power amp
  198. 480vct at 50VA for less than $12 shipped
  199. Pioneer SA-81 integrated tube amp
  200. 12B4 Preamp Design/Pre-build Questions
  201. Can I mount a 5R4WGA at a 10 degree angle?
  202. plate current variation with fixed bias
  203. 5693 issue
  204. SPP amp build from TubeLab
  205. "mustard" Philips Mullard capacitors
  206. Hum SOLVED!!!!
  207. Garage System Control/Preamp idea
  208. Aikido Octal line stage kit info needed
  209. Phonola suitcase player...now, with hum!
  210. My latests (well ... first) RIAA preamp
  211. 12at7 one side drawers 10% more current
  212. Upgrade output transfomers, EL34 single-ended
  213. cleaning tubes / valves
  214. a simple (I think) Baxandall question
  215. Paoli Model 60M help
  216. Audio Noise Tube Tester
  217. Should something be done about these traces?
  218. 300(may)B(e) - Recs & Advice
  219. LNF in gain stage or CF?
  220. KT77 at 790 V
  221. Newb question about tube socket placement
  222. my first tube amp project
  223. Fun With Measurements
  224. Unusual Schematic help
  225. 12AX7 vs 12AT7 vs 12AU7
  226. 6SN7 Distortion Canceling in Amp
  227. D-115 w/ weak channel
  228. MOSFET Follower Choices
  229. Sanity check my unlabeled transformer guesstimates? Fisher X-200 power trafo
  230. Mystery Tube Time
  231. PSU simulation help
  232. Vacuum tubes and wire wrap
  233. LTP phase splitter as output stage?
  234. Swap 6B4G for 6SL7 SRPP ?
  235. Jean Hiraga or Tubelab SSE for KT88 SET
  236. Need Fuse Values for 6922 Tube Premp, 6.3v & B+ Fuse Value
  237. 12AX7 tone control with low B+ voltage
  238. Cathodefollower and strange behaviour with lowering of anode voltage.
  239. Early Audio Research Dual 100 Schematic?
  240. current drive
  241. Bench Supply
  242. 6X5 GT Hybrid rectifier
  243. 8417 tube test on Hickok 539a
  244. small shrouded PP OPT choices ?
  245. Single triode instead of double triode?
  246. Low noise valve tube circuit ideas for cassette deck
  247. Found a box of various 9 pin tubes....
  248. 12AU7 internally matched triodes
  249. Homemade tube socket adaptor
  250. Who's mark was on this obvious 6n23p?

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