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  1. amp sounds bad- fatman itube 252
  2. 6C33 single ended class A2 (cathode network question)
  3. Sweet Peach EL34b Amp - Distortion?
  4. 6C33C socket types, where to buy?
  5. haedphone amp. using 6418< NEED HELP
  6. finished my 6au6/807 amplifier
  7. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  8. Broskie "Unbalancer" - transformer specifications
  9. Tube chess.
  10. How Its Made - Vacuum Tubes
  11. Please help me understand power supply load
  12. 12AU7 - How absolute are maximum ratings?
  13. Tube rejuvination
  14. Article: Samsung brings back tubes in audio dock
  15. 1st build suggestions
  16. Parallel SE output
  17. Fixed Bias question
  18. vintage ua 610 schematic
  19. Which KT88 PP and which Transformers?
  20. Some more special small-signal tv tubes
  21. MR 67 Coupling Caps
  22. Help - YAQIN MS-20L schematic
  23. Power and Speaker cables
  24. v1 tube keeps going microphonic help! 5e3 build
  25. Leak TL12+ with triode mode EF86
  26. diy tube dampers
  27. VTVM troubleshooting help
  28. PP amp crossover distortion
  29. Sanity check please? ST-70(-ish) power supply
  30. Thoughts of apparent noise on ground - due to power tx?
  31. hybride circlotron
  32. Clone
  33. 8156 Beam Pentode Compactron
  34. DOUBLE TRIODE (6N16B)
  35. looking for Tube I/V analog for dac schematic ?
  36. NewBee PPEL84
  37. Whooaa! Now we're talking.
  38. Cinema Engineering AT-18
  39. Back from school
  40. Amp ideas for my spare 3.3k output transformers.
  41. HEllo and a few suggestions please
  42. 1SH24B Pre-Amp (or buffer?)
  43. Anode cap for GU 29 / QQE06/40
  44. Back to back autotransformers for B+?
  45. Sound Valves M60 schematics
  46. Volume Pot for RH84
  47. Mengyue mini el34b
  48. Which Chinese integrated tube amp have the power for Rock Song ?
  49. Help on transformers please
  50. 300B alternatives
  51. Anybody using a tube amp in their car?
  52. What is a KT88-98?
  53. 6au6 line stage a bad idea?
  54. Making a Kron tube
  55. AY Symphonies preamp
  56. Need to Upgrade Tube Preamp Volume Pot
  57. Tubelab Simple SE low B+
  58. Filament AC or DC?
  59. rasping sound from Dared VP-16
  60. Anyone have any "small signal" pentode models?
  61. Power amp distortion for modern amps
  62. Help with EL504-based amplifier
  63. Tubes: Are they worth it?
  64. Radio Shack Boston Monobloc (fuse question)
  65. 829B 3E29 Pentode PPP?
  66. Fixed Autobias?
  67. Best wishes
  68. Radiotron A504 amplifier schematic
  69. Blown power tube - a short story
  70. Hickok 752A calibration?
  71. replace EL34 with EL37 !?
  72. Mono push-pull driver PCB
  73. Magnavox 139AA schematics, info?
  74. Anyone knows what driver tube on DowdyLama's GM-70......
  75. Building an amp around the QB5/1750 transmitter tube
  76. Instrument amp from '59 Lowrey donor chassis.
  77. cascoded gyrator loaded 6H9C to low idle.
  78. vacuum tube DAC and connection
  79. Dynaco ST70 II Right Channel Out
  80. ST70 Inrush Issue
  81. ECC88 OTL heaphone amp
  82. Help with deciding to build or buy Tube amp.
  83. Luxman LV-105 static on on channel
  84. equivlent of FU-50
  85. placing the volume control
  86. PP 300B ''transformer coupled''
  87. My First Tube Preamp
  88. Tube amp kit and speaker recommendations?
  89. First design GU81M SE triode
  90. Instruments & Amps forum - where is it?
  91. Power supply capacitor question for tubelab simple ss
  92. EL300 = 6FN5 / PL300 = 35FN5 tube
  93. 6U8 driving 45
  94. very low impedance white follower with 6H13C
  95. EL86 Any idea helps.
  96. 6112 and 6111 Mini-preamp
  97. Expert advice on what preamp to chose
  98. Harman Kardon DPR-7, Commander series pre/mixer
  99. input transformer - mumetal casing etc.
  100. Oil-filled caps: ASC versus Panasonic
  101. SOHA headphone amp
  102. Using a single triode as a .......
  103. Sonic Frontiers SFP-1 Phono Stage
  104. Help!! with attenuation.
  105. power up inrush current limiter - anyone using?
  106. Audioromy FU-29, Latest Model 828A Mini Review
  107. Vertical-deflection
  108. Drilling a hole
  109. Edcor CXPP25-MS-8K V Triode Z-565
  110. bad opt measured values
  111. Mu Follower Driver for Push-Pull
  112. Hickok 539 question...
  113. need datasheets for a phillips transformer if anyone has any
  114. Chicago power XFMR question.
  115. Coupling Capacitor - Pls Help
  116. Help please on Christmas gift
  117. Audio Note P-zero
  118. SE EL34 Schematic - What do you think?
  119. Playing with hybrid amp: SRPP + MOSFET
  120. 300B filament supply question
  121. KT88 Parallel Push Pull
  122. cheating life out of old tubes?
  123. dBu transformer ratings
  124. Dared MP-2a3c mods
  125. Output transformers (Wolpert)
  126. Using Mains Transformers as Outputs
  127. Tube just for show...
  128. first project - first post - poddwatt
  129. High power CCS
  130. Analog Summing
  131. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  132. cascode tubes
  133. High Fidelity by Pilot (circa 1953)
  134. Hardware help please
  135. integrated amps 100 per channel
  136. KT88 mounting question
  137. Output Transformer question
  138. Angstrom Thermionic
  139. ECC88 tube buffer NEEDED !
  140. Marshall 8080, missing components
  141. Paralell SE 807 Amp design
  142. Putting together a tweaker friendly amplifier!
  143. Tube chassis
  144. DHT headphone Hybrid-CF+
  145. Looking for specs on this Beyer Xfmr
  146. Resistors for Berning EA-2101?
  147. Uneven Plate Glow
  148. Parafeed transformer sounds thin
  149. Lightbulbs as ccs
  150. My AWESOME First DIY amp
  151. Cary audio design SLI 80
  152. A1538 OPT?
  153. Genalex A2900 Keep or Sell?
  154. 6CB6 Spice Model wanted
  155. XFMR Help?
  156. 12 volt to 300 volt inverter question for tubes
  157. These amps should be verboten!
  158. how to use PCL86 instead of ecl86
  159. PSU for Aikido (4x 12SN7)
  160. SCA35 and AU-70
  161. Analisys of power amp limitations of tube bias range
  162. DIY Phono Preamp ??
  163. NOS 211 RCA or National Union?
  164. Iron Powder + Resin Output Transformer
  165. The Radio Hat Challenge
  166. EU regulations
  167. Transconductance for kt-90 in plain english
  168. Craftsmen RC-2
  169. Valve Amplification Company V100
  170. Parallel feed transformer with SRPP
  171. It's heeeeeere!- Valve Amplifiers 4th Edition
  172. opera consonance phonostage-PM1
  173. Anybody Explain this Preamp shematic?
  174. The high-voltage collection
  175. Input transformer topology question
  176. JE Labs 300Bdx stereo - troubleshooting
  177. battery operated 12/24/48 Volt multiple tube OTL
  178. Bringing up long-stored tube gear
  179. About RH84 three channel?
  180. MCC with Fisher
  181. Directly heated cathodes
  182. Build recommendation
  183. Ortofon KS 591 - informations
  184. Oatley K295-extra space for tubes
  185. A beginner's tube amp to drive a pair of fostex Fe103e
  186. Tame the beast.
  187. KT88 and Hammond Transformer
  188. B+ Drifts down after 2 hours
  189. Power amp sputters on turnoff
  190. Yet another EQP-1A
  191. How to bias 6SL7?
  192. 6CG7/6FQ7 = 6N5P (6Н5П)
  193. #27 mu stage
  194. Compactron Regulated Power Supply
  195. Best sounding voltage amplifier for hybride.
  196. PX25 to 300B pins
  197. de-gassing power tubes???
  198. Heathkit 51-29 output transformers issure
  199. 6AS7 Model
  200. 26H choke good enough for a grid or anode choke?
  201. Russian 6R2P for small amp.
  202. Power transformer primary is open.
  203. Rectifier oddness
  204. First Tube Build, Thoughts?
  205. Output Transformers
  206. Lazy Sunday 6SN7 Preamp
  207. Audio research VT200 Biasing & Schematic
  208. finished my new preamplifier!!
  209. What would be the correct output cap for this OTL Headphone Amp?
  210. Full Bridge Rectifier With Tubes
  211. Looking for data sheet for GE JAN 6146W/7212
  212. Best Valve pre-amp match for ME 550 amp
  213. Fisher 500c
  214. From old Philips tube books , just for tube audio DIY friends !
  215. UFO
  216. Adding a preamp?
  217. XS-225 valve amp circuit.
  218. LS7/CV1660 curves
  219. Differences between 12V6 tube and 12A6 tube?
  220. Please check my schematic
  221. 12W Push pull w/6C4C
  222. Tube Date Code
  223. For new members....
  224. Graphite ring on sweep tubes
  225. 6N6P tube - focus on
  226. Vox Guitar Amp Created a Revolution
  227. Hot tube preamp pedal build
  228. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  229. Radford STA100 improvements?
  230. Playmaster unit 2 help needed!
  231. help me build an output transformer
  232. Vintage Magnavox tube amp
  233. Christmas Build, advice needed.
  234. Speaker suggestions for ST-70
  235. Tube markings?
  236. gaumont-kalee
  237. amplifiers audio research D90
  238. 40W Glass A 300B tube schematic needed.
  239. Hum in one channel only
  240. Water cooling Power Tubes
  241. Toroid Output Transformer from Plitron
  242. Scott LK-30 Assembly Manual Needed
  243. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  244. The best valve amp!
  245. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  246. More probably stupid questions about feedback
  247. single stage amp?
  248. SS 83 again
  249. Making Spice Models for tubes
  250. Seth mk 2 ???

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