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

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