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  1. New Tim Mellows OTL project
  2. Melted my mains transformer - Where to find replacement ?
  3. Strange.................
  4. Effect of high mains voltage?
  5. Kent SL 21 Tube head need help!!
  6. Hexfred or SIC rectifiers in choke supplies
  7. 'Strange' bass boost with impedance transformer
  8. Did my tubes go south ?
  9. Use of Tango NN-600-600 Transformers ?
  10. Anyone have an explanation for break(burn)in
  11. The Right Tube & TRannie
  12. 6SL7 / 6SN7 Phono
  13. Tube integrated amp in China.
  14. Power supply issues with Borbely style 12AU7/MOSFET hybrid
  15. heater elevation ground point
  16. Edison 12, can anyone help?
  17. Delay B+ using relay?
  18. New Schematic Linestage Tube Preamp using EF86 & 12AX7
  19. Phonostage (WAD clone) and 12B4A Preamp Build
  20. Interstage coupling feedback
  21. Just received a Yaqin MC-10T and have a couple of questions.
  22. Amplifier Troubleshooting
  23. Audio Preamplifier with PCC88
  24. Need Help With These TriodeDick Preamp Scematics
  25. I need help with my amp project
  26. Looking for unbalanced to balanced transformer
  27. Power Transformer Question
  28. My First Tube Amp Project S5 K-12G
  29. 6E2 vacuum tube compatibility
  30. Tube condenser microphone help!
  31. Audio transformer feedback loop
  32. yaqin vk amp without the loudness button uk version
  33. PP driver stage with local feedback
  34. Leader LAG-120B Audio Generator Manual Wanted
  35. Transformer brand question
  36. Single ended at 24Vcc 1+1W @ 8 ohm - three tubes
  37. EL41 PP power supply questions
  38. Reduce output on a ECC88CC class A pre-amp !
  39. SE OT impedance question
  40. DIY Tube amp book?
  41. 6P6P tubes?? will 6V6's work?
  42. RH84 amplifier build, but very weak distorted output
  43. Paralleling filament transformers
  44. 6ak5 triode mode disipation
  45. Equalize or Not Equilize when driving a tube amp ?
  46. How to retire from DIY and sell off all your workshop contents?
  47. New to tubes and diyaudio here, question about torrids and tube amps...
  48. PC Based Oscilliscope for Tube Curcuits
  49. Lamp in HV Centre Tap - why?
  50. EL156 PP
  51. 300B resistor
  52. Has anyone here bought from ussr-tubes.com ?
  53. Which cathode bypass capacitor?
  54. RIAA Schematic for-6SL7,7308 or?
  55. Chassis' for Tube Gear
  56. Convergent Audio Tech SL1 preamp
  57. Buy Them While You Can Not When You...
  58. Does anyone know of Thomas Martens?
  59. OTL for 40-80ohm speakers
  60. Morrison Dinosaur
  61. pcl86=14gw8 ??
  62. My little SE with GU50
  63. Source follower in a DC-coupled pp amp?
  64. Tube chassis for retail sale.
  65. Poor man's power supply
  66. High voltage driver for AB2 operation GU81m tubes
  67. 5AR4 rectified power supply question
  68. Direct Coupled Amp
  69. Is this EL84 kit from Germany worth fooling with?
  70. 6v6 PP Pentode mode
  71. 5 pin octal tube socket
  72. RCA Manual Typo?
  73. pete millet low mu preamp
  74. Capability to drive the 211 PP
  75. 6BG6G SE advice needed.
  76. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  77. Power booster
  78. I've just build this steroe amplifier
  79. What amp to build? Push Pull, SE? thoughts?
  80. amp sounds bad- fatman itube 252
  81. 6C33 single ended class A2 (cathode network question)
  82. Sweet Peach EL34b Amp - Distortion?
  83. 6C33C socket types, where to buy?
  84. haedphone amp. using 6418< NEED HELP
  85. finished my 6au6/807 amplifier
  86. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  87. Broskie "Unbalancer" - transformer specifications
  88. Tube chess.
  89. How Its Made - Vacuum Tubes
  90. Please help me understand power supply load
  91. 12AU7 - How absolute are maximum ratings?
  92. Tube rejuvination
  93. Article: Samsung brings back tubes in audio dock
  94. 1st build suggestions
  95. Parallel SE output
  96. Fixed Bias question
  97. vintage ua 610 schematic
  98. Which KT88 PP and which Transformers?
  99. Some more special small-signal tv tubes
  100. MR 67 Coupling Caps
  101. Help - YAQIN MS-20L schematic
  102. Power and Speaker cables
  103. v1 tube keeps going microphonic help! 5e3 build
  104. Leak TL12+ with triode mode EF86
  105. diy tube dampers
  106. VTVM troubleshooting help
  107. PP amp crossover distortion
  108. Sanity check please? ST-70(-ish) power supply
  109. Thoughts of apparent noise on ground - due to power tx?
  110. hybride circlotron
  111. Clone
  112. 8156 Beam Pentode Compactron
  113. DOUBLE TRIODE (6N16B)
  114. looking for Tube I/V analog for dac schematic ?
  115. NewBee PPEL84
  116. Whooaa! Now we're talking.
  117. Cinema Engineering AT-18
  118. Back from school
  119. Amp ideas for my spare 3.3k output transformers.
  120. HEllo and a few suggestions please
  121. 1SH24B Pre-Amp (or buffer?)
  122. Anode cap for GU 29 / QQE06/40
  123. Back to back autotransformers for B+?
  124. Sound Valves M60 schematics
  125. Volume Pot for RH84
  126. Mengyue mini el34b
  127. Which Chinese integrated tube amp have the power for Rock Song ?
  128. Help on transformers please
  129. 300B alternatives
  130. Anybody using a tube amp in their car?
  131. What is a KT88-98?
  132. 6au6 line stage a bad idea?
  133. Making a Kron tube
  134. AY Symphonies preamp
  135. Need to Upgrade Tube Preamp Volume Pot
  136. Tubelab Simple SE low B+
  137. Filament AC or DC?
  138. rasping sound from Dared VP-16
  139. Anyone have any "small signal" pentode models?
  140. Power amp distortion for modern amps
  141. Help with EL504-based amplifier
  142. Tubes: Are they worth it?
  143. Radio Shack Boston Monobloc (fuse question)
  144. 829B 3E29 Pentode PPP?
  145. Fixed Autobias?
  146. Best wishes
  147. Radiotron A504 amplifier schematic
  148. Blown power tube - a short story
  149. Hickok 752A calibration?
  150. replace EL34 with EL37 !?
  151. Mono push-pull driver PCB
  152. Magnavox 139AA schematics, info?
  153. Anyone knows what driver tube on DowdyLama's GM-70......
  154. Building an amp around the QB5/1750 transmitter tube
  155. Instrument amp from '59 Lowrey donor chassis.
  156. cascoded gyrator loaded 6H9C to low idle.
  157. vacuum tube DAC and connection
  158. Dynaco ST70 II Right Channel Out
  159. ST70 Inrush Issue
  160. ECC88 OTL heaphone amp
  161. Help with deciding to build or buy Tube amp.
  162. Luxman LV-105 static on on channel
  163. equivlent of FU-50
  164. placing the volume control
  165. PP 300B ''transformer coupled''
  166. My First Tube Preamp
  167. Tube amp kit and speaker recommendations?
  168. First design GU81M SE triode
  169. Instruments & Amps forum - where is it?
  170. Power supply capacitor question for tubelab simple ss
  171. EL300 = 6FN5 / PL300 = 35FN5 tube
  172. 6U8 driving 45
  173. very low impedance white follower with 6H13C
  174. EL86 Any idea helps.
  175. 6112 and 6111 Mini-preamp
  176. Expert advice on what preamp to chose
  177. Harman Kardon DPR-7, Commander series pre/mixer
  178. input transformer - mumetal casing etc.
  179. Oil-filled caps: ASC versus Panasonic
  180. SOHA headphone amp
  181. Using a single triode as a .......
  182. Sonic Frontiers SFP-1 Phono Stage
  183. Help!! with attenuation.
  184. power up inrush current limiter - anyone using?
  185. Audioromy FU-29, Latest Model 828A Mini Review
  186. Vertical-deflection
  187. Drilling a hole
  188. Edcor CXPP25-MS-8K V Triode Z-565
  189. bad opt measured values
  190. Mu Follower Driver for Push-Pull
  191. Hickok 539 question...
  192. need datasheets for a phillips transformer if anyone has any
  193. Chicago power XFMR question.
  194. Coupling Capacitor - Pls Help
  195. Help please on Christmas gift
  196. Audio Note P-zero
  197. SE EL34 Schematic - What do you think?
  198. Playing with hybrid amp: SRPP + MOSFET
  199. 300B filament supply question
  200. KT88 Parallel Push Pull
  201. cheating life out of old tubes?
  202. dBu transformer ratings
  203. Dared MP-2a3c mods
  204. Output transformers (Wolpert)
  205. Using Mains Transformers as Outputs
  206. Tube just for show...
  207. first project - first post - poddwatt
  208. High power CCS
  209. Analog Summing
  210. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  211. cascode tubes
  212. High Fidelity by Pilot (circa 1953)
  213. Hardware help please
  214. integrated amps 100 per channel
  215. KT88 mounting question
  216. Output Transformer question
  217. Angstrom Thermionic
  218. ECC88 tube buffer NEEDED !
  219. Marshall 8080, missing components
  220. Paralell SE 807 Amp design
  221. Putting together a tweaker friendly amplifier!
  222. Tube chassis
  223. DHT headphone Hybrid-CF+
  224. Looking for specs on this Beyer Xfmr
  225. Resistors for Berning EA-2101?
  226. Uneven Plate Glow
  227. Parafeed transformer sounds thin
  228. Lightbulbs as ccs
  229. My AWESOME First DIY amp
  230. Cary audio design SLI 80
  231. A1538 OPT?
  232. Genalex A2900 Keep or Sell?
  233. 6CB6 Spice Model wanted
  234. XFMR Help?
  235. 12 volt to 300 volt inverter question for tubes
  236. These amps should be verboten!
  237. how to use PCL86 instead of ecl86
  238. PSU for Aikido (4x 12SN7)
  239. SCA35 and AU-70
  240. Analisys of power amp limitations of tube bias range
  241. DIY Phono Preamp ??
  242. NOS 211 RCA or National Union?
  243. Iron Powder + Resin Output Transformer
  244. The Radio Hat Challenge
  245. EU regulations
  246. Transconductance for kt-90 in plain english
  247. Craftsmen RC-2
  248. Valve Amplification Company V100
  249. Parallel feed transformer with SRPP
  250. It's heeeeeere!- Valve Amplifiers 4th Edition

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