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  1. 6V SLA Dropping resistor for a 5VDC Filament Supply
  2. Wind (Thermionic?) noise, and other strange sounds
  3. Suggestions for an tube-amp with KT88
  4. SE-100 Golden Tube Audio - REPAIR
  5. Power amp vs preamp topology
  6. EL34 Characteristics for Ug2 400V
  7. old Heathkit amp
  8. Toroid OPT for 300B
  9. Help: Connecting two Fluke meters in series
  10. Preamp Volume Controls
  11. Output SE Transformer Question
  12. Silver bearing grease for tube sockets
  13. Should I try adding a small Tube Preamp to a DTA-100?
  14. IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?
  15. Dynaco stereo 70 look alike
  16. Vacuum Tube factory: For Sale!
  17. Does anybody know anything about this German console
  18. Heater dillema for multi chassis phono stage.
  19. Q: lifespan of JJ ECC99 tubes
  20. Cold solder joint?
  21. Input Impedance/Buffers
  22. Old capacitors..Comments..
  23. Shizuki capacitors?
  24. Spectrum Analyzer: What to get ? What to look for in a spectrum analyzer ?
  25. Amperex Orange Globe 12ax7 ,Brimar cv4004
  26. Question about transformer lamination stacking techniques
  27. line preamplifier with 6c10
  28. Homebrew Toroidal Output Transformer
  29. Line output tube
  30. MJK's SSSchadeode
  31. Any one know were to buy the fu-80 tube?
  32. Maida Regulator PCB
  33. Suggestions for 7k output transformers.
  34. Help: Fluke 87V Meter Calibration
  35. Searching for Primaluna Prologue Three schematic
  36. Pentode Regulation Question
  37. pentodes with CCS load?
  38. Are these tube PCBs any good ?
  39. china 6L6 SEdiy
  40. What are your opinions of the ST-70 and St-120
  41. Baffle Step Compensation Tube Circuit
  42. 6L6 to 7027 cathode resistor value
  43. Dared MC-7P Upgrades
  44. adapter to go from 6L6 to 807
  45. My Experience with a Jolida 202s (SoFar..)
  46. Cathodyne gain calculator link
  47. Dynakit ST-35?
  48. PSUD modeling old amp PS fails.
  49. Fisher 800 push-pull output stage not symmetrical. Why?
  50. Question of D3a driving 300B
  51. old console amp
  52. st35 vs millett DCPP vs tubelab simple SE
  53. New Tim Mellows OTL project
  54. Melted my mains transformer - Where to find replacement ?
  55. Strange.................
  56. Effect of high mains voltage?
  57. Kent SL 21 Tube head need help!!
  58. Hexfred or SIC rectifiers in choke supplies
  59. 'Strange' bass boost with impedance transformer
  60. Did my tubes go south ?
  61. Use of Tango NN-600-600 Transformers ?
  62. Anyone have an explanation for break(burn)in
  63. The Right Tube & TRannie
  64. 6SL7 / 6SN7 Phono
  65. Tube integrated amp in China.
  66. Power supply issues with Borbely style 12AU7/MOSFET hybrid
  67. heater elevation ground point
  68. Edison 12, can anyone help?
  69. Delay B+ using relay?
  70. New Schematic Linestage Tube Preamp using EF86 & 12AX7
  71. Phonostage (WAD clone) and 12B4A Preamp Build
  72. Interstage coupling feedback
  73. Just received a Yaqin MC-10T and have a couple of questions.
  74. Amplifier Troubleshooting
  75. Audio Preamplifier with PCC88
  76. Need Help With These TriodeDick Preamp Scematics
  77. I need help with my amp project
  78. Looking for unbalanced to balanced transformer
  79. Power Transformer Question
  80. My First Tube Amp Project S5 K-12G
  81. 6E2 vacuum tube compatibility
  82. Tube condenser microphone help!
  83. Audio transformer feedback loop
  84. yaqin vk amp without the loudness button uk version
  85. PP driver stage with local feedback
  86. Leader LAG-120B Audio Generator Manual Wanted
  87. Transformer brand question
  88. Single ended at 24Vcc 1+1W @ 8 ohm - three tubes
  89. EL41 PP power supply questions
  90. Reduce output on a ECC88CC class A pre-amp !
  91. SE OT impedance question
  92. DIY Tube amp book?
  93. 6P6P tubes?? will 6V6's work?
  94. RH84 amplifier build, but very weak distorted output
  95. Paralleling filament transformers
  96. 6ak5 triode mode disipation
  97. Equalize or Not Equilize when driving a tube amp ?
  98. How to retire from DIY and sell off all your workshop contents?
  99. New to tubes and diyaudio here, question about torrids and tube amps...
  100. PC Based Oscilliscope for Tube Curcuits
  101. Lamp in HV Centre Tap - why?
  102. EL156 PP
  103. 300B resistor
  104. Has anyone here bought from ussr-tubes.com ?
  105. Which cathode bypass capacitor?
  106. RIAA Schematic for-6SL7,7308 or?
  107. Chassis' for Tube Gear
  108. Convergent Audio Tech SL1 preamp
  109. Buy Them While You Can Not When You...
  110. Does anyone know of Thomas Martens?
  111. OTL for 40-80ohm speakers
  112. Morrison Dinosaur
  113. pcl86=14gw8 ??
  114. My little SE with GU50
  115. Source follower in a DC-coupled pp amp?
  116. Tube chassis for retail sale.
  117. Poor man's power supply
  118. High voltage driver for AB2 operation GU81m tubes
  119. 5AR4 rectified power supply question
  120. Direct Coupled Amp
  121. Is this EL84 kit from Germany worth fooling with?
  122. 6v6 PP Pentode mode
  123. 5 pin octal tube socket
  124. RCA Manual Typo?
  125. pete millet low mu preamp
  126. Capability to drive the 211 PP
  127. 6BG6G SE advice needed.
  128. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  129. Power booster
  130. I've just build this steroe amplifier
  131. What amp to build? Push Pull, SE? thoughts?
  132. amp sounds bad- fatman itube 252
  133. 6C33 single ended class A2 (cathode network question)
  134. Sweet Peach EL34b Amp - Distortion?
  135. 6C33C socket types, where to buy?
  136. haedphone amp. using 6418< NEED HELP
  137. finished my 6au6/807 amplifier
  138. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  139. Broskie "Unbalancer" - transformer specifications
  140. Tube chess.
  141. How Its Made - Vacuum Tubes
  142. Please help me understand power supply load
  143. 12AU7 - How absolute are maximum ratings?
  144. Tube rejuvination
  145. Article: Samsung brings back tubes in audio dock
  146. 1st build suggestions
  147. Parallel SE output
  148. Fixed Bias question
  149. vintage ua 610 schematic
  150. Which KT88 PP and which Transformers?
  151. Some more special small-signal tv tubes
  152. MR 67 Coupling Caps
  153. Help - YAQIN MS-20L schematic
  154. Power and Speaker cables
  155. Leak TL12+ with triode mode EF86
  156. diy tube dampers
  157. VTVM troubleshooting help
  158. PP amp crossover distortion
  159. Sanity check please? ST-70(-ish) power supply
  160. Thoughts of apparent noise on ground - due to power tx?
  161. hybride circlotron
  162. Clone
  163. 8156 Beam Pentode Compactron
  164. DOUBLE TRIODE (6N16B)
  165. looking for Tube I/V analog for dac schematic ?
  166. NewBee PPEL84
  167. Whooaa! Now we're talking.
  168. Cinema Engineering AT-18
  169. Back from school
  170. Amp ideas for my spare 3.3k output transformers.
  171. HEllo and a few suggestions please
  172. 1SH24B Pre-Amp (or buffer?)
  173. Anode cap for GU 29 / QQE06/40
  174. Back to back autotransformers for B+?
  175. Sound Valves M60 schematics
  176. Volume Pot for RH84
  177. Mengyue mini el34b
  178. Which Chinese integrated tube amp have the power for Rock Song ?
  179. Help on transformers please
  180. 300B alternatives
  181. Anybody using a tube amp in their car?
  182. What is a KT88-98?
  183. 6au6 line stage a bad idea?
  184. Making a Kron tube
  185. AY Symphonies preamp
  186. Need to Upgrade Tube Preamp Volume Pot
  187. Tubelab Simple SE low B+
  188. Filament AC or DC?
  189. rasping sound from Dared VP-16
  190. Anyone have any "small signal" pentode models?
  191. Power amp distortion for modern amps
  192. Help with EL504-based amplifier
  193. Tubes: Are they worth it?
  194. Radio Shack Boston Monobloc (fuse question)
  195. 829B 3E29 Pentode PPP?
  196. Fixed Autobias?
  197. Best wishes
  198. Radiotron A504 amplifier schematic
  199. Blown power tube - a short story
  200. Hickok 752A calibration?
  201. replace EL34 with EL37 !?
  202. Mono push-pull driver PCB
  203. Magnavox 139AA schematics, info?
  204. Anyone knows what driver tube on DowdyLama's GM-70......
  205. Building an amp around the QB5/1750 transmitter tube
  206. Instrument amp from '59 Lowrey donor chassis.
  207. cascoded gyrator loaded 6H9C to low idle.
  208. vacuum tube DAC and connection
  209. Dynaco ST70 II Right Channel Out
  210. ST70 Inrush Issue
  211. ECC88 OTL heaphone amp
  212. Help with deciding to build or buy Tube amp.
  213. Luxman LV-105 static on on channel
  214. equivlent of FU-50
  215. placing the volume control
  216. PP 300B ''transformer coupled''
  217. My First Tube Preamp
  218. Tube amp kit and speaker recommendations?
  219. First design GU81M SE triode
  220. Instruments & Amps forum - where is it?
  221. Power supply capacitor question for tubelab simple ss
  222. EL300 = 6FN5 / PL300 = 35FN5 tube
  223. 6U8 driving 45
  224. very low impedance white follower with 6H13C
  225. EL86 Any idea helps.
  226. 6112 and 6111 Mini-preamp
  227. Expert advice on what preamp to chose
  228. Harman Kardon DPR-7, Commander series pre/mixer
  229. input transformer - mumetal casing etc.
  230. SOHA headphone amp
  231. Using a single triode as a .......
  232. Sonic Frontiers SFP-1 Phono Stage
  233. Help!! with attenuation.
  234. power up inrush current limiter - anyone using?
  235. Audioromy FU-29, Latest Model 828A Mini Review
  236. Vertical-deflection
  237. Drilling a hole
  238. Edcor CXPP25-MS-8K V Triode Z-565
  239. bad opt measured values
  240. Mu Follower Driver for Push-Pull
  241. Hickok 539 question...
  242. need datasheets for a phillips transformer if anyone has any
  243. Chicago power XFMR question.
  244. Coupling Capacitor - Pls Help
  245. Help please on Christmas gift
  246. Audio Note P-zero
  247. SE EL34 Schematic - What do you think?
  248. Playing with hybrid amp: SRPP + MOSFET
  249. 300B filament supply question
  250. KT88 Parallel Push Pull

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