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  1. Broskie "Unbalancer" - transformer specifications
  2. Tube chess.
  3. How Its Made - Vacuum Tubes
  4. Please help me understand power supply load
  5. 12AU7 - How absolute are maximum ratings?
  6. Tube rejuvination
  7. Article: Samsung brings back tubes in audio dock
  8. 1st build suggestions
  9. Parallel SE output
  10. Fixed Bias question
  11. vintage ua 610 schematic
  12. Which KT88 PP and which Transformers?
  13. Some more special small-signal tv tubes
  14. Help - YAQIN MS-20L schematic
  15. Power and Speaker cables
  16. Leak TL12+ with triode mode EF86
  17. diy tube dampers
  18. VTVM troubleshooting help
  19. PP amp crossover distortion
  20. Sanity check please? ST-70(-ish) power supply
  21. Thoughts of apparent noise on ground - due to power tx?
  22. hybride circlotron
  23. Clone
  24. 8156 Beam Pentode Compactron
  25. DOUBLE TRIODE (6N16B)
  26. looking for Tube I/V analog for dac schematic ?
  27. NewBee PPEL84
  28. Whooaa! Now we're talking.
  29. Cinema Engineering AT-18
  30. Back from school
  31. Amp ideas for my spare 3.3k output transformers.
  32. HEllo and a few suggestions please
  33. 1SH24B Pre-Amp (or buffer?)
  34. Anode cap for GU 29 / QQE06/40
  35. Back to back autotransformers for B+?
  36. Sound Valves M60 schematics
  37. Volume Pot for RH84
  38. Mengyue mini el34b
  39. Which Chinese integrated tube amp have the power for Rock Song ?
  40. Help on transformers please
  41. 300B alternatives
  42. Anybody using a tube amp in their car?
  43. What is a KT88-98?
  44. 6au6 line stage a bad idea?
  45. Making a Kron tube
  46. AY Symphonies preamp
  47. Need to Upgrade Tube Preamp Volume Pot
  48. Filament AC or DC?
  49. rasping sound from Dared VP-16
  50. Anyone have any "small signal" pentode models?
  51. Power amp distortion for modern amps
  52. Help with EL504-based amplifier
  53. Tubes: Are they worth it?
  54. Radio Shack Boston Monobloc (fuse question)
  55. 829B 3E29 Pentode PPP?
  56. Fixed Autobias?
  57. Best wishes
  58. Radiotron A504 amplifier schematic
  59. Blown power tube - a short story
  60. replace EL34 with EL37 !?
  61. Mono push-pull driver PCB
  62. Magnavox 139AA schematics, info?
  63. Anyone knows what driver tube on DowdyLama's GM-70......
  64. Building an amp around the QB5/1750 transmitter tube
  65. Instrument amp from '59 Lowrey donor chassis.
  66. cascoded gyrator loaded 6H9C to low idle.
  67. vacuum tube DAC and connection
  68. Dynaco ST70 II Right Channel Out
  69. ST70 Inrush Issue
  70. ECC88 OTL heaphone amp
  71. Help with deciding to build or buy Tube amp.
  72. Luxman LV-105 static on on channel
  73. equivlent of FU-50
  74. placing the volume control
  75. PP 300B ''transformer coupled''
  76. My First Tube Preamp
  77. Tube amp kit and speaker recommendations?
  78. First design GU81M SE triode
  79. Instruments & Amps forum - where is it?
  80. EL300 = 6FN5 / PL300 = 35FN5 tube
  81. 6U8 driving 45
  82. very low impedance white follower with 6H13C
  83. EL86 Any idea helps.
  84. 6112 and 6111 Mini-preamp
  85. Expert advice on what preamp to chose
  86. Harman Kardon DPR-7, Commander series pre/mixer
  87. input transformer - mumetal casing etc.
  88. SOHA headphone amp
  89. Using a single triode as a .......
  90. Sonic Frontiers SFP-1 Phono Stage
  91. Help!! with attenuation.
  92. power up inrush current limiter - anyone using?
  93. Audioromy FU-29, Latest Model 828A Mini Review
  94. Vertical-deflection
  95. Drilling a hole
  96. Edcor CXPP25-MS-8K V Triode Z-565
  97. bad opt measured values
  98. Mu Follower Driver for Push-Pull
  99. need datasheets for a phillips transformer if anyone has any
  100. Chicago power XFMR question.
  101. Help please on Christmas gift
  102. Audio Note P-zero
  103. SE EL34 Schematic - What do you think?
  104. Playing with hybrid amp: SRPP + MOSFET
  105. 300B filament supply question
  106. KT88 Parallel Push Pull
  107. cheating life out of old tubes?
  108. dBu transformer ratings
  109. Dared MP-2a3c mods
  110. Output transformers (Wolpert)
  111. Using Mains Transformers as Outputs
  112. Tube just for show...
  113. first project - first post - poddwatt
  114. High power CCS
  115. Analog Summing
  116. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  117. cascode tubes
  118. High Fidelity by Pilot (circa 1953)
  119. Hardware help please
  120. integrated amps 100 per channel
  121. KT88 mounting question
  122. Output Transformer question
  123. Angstrom Thermionic
  124. ECC88 tube buffer NEEDED !
  125. Paralell SE 807 Amp design
  126. Putting together a tweaker friendly amplifier!
  127. Tube chassis
  128. DHT headphone Hybrid-CF+
  129. Looking for specs on this Beyer Xfmr
  130. Resistors for Berning EA-2101?
  131. Uneven Plate Glow
  132. Parafeed transformer sounds thin
  133. Lightbulbs as ccs
  134. My AWESOME First DIY amp
  135. Cary audio design SLI 80
  136. A1538 OPT?
  137. Genalex A2900 Keep or Sell?
  138. 6CB6 Spice Model wanted
  139. XFMR Help?
  140. 12 volt to 300 volt inverter question for tubes
  141. These amps should be verboten!
  142. how to use PCL86 instead of ecl86
  143. PSU for Aikido (4x 12SN7)
  144. SCA35 and AU-70
  145. Analisys of power amp limitations of tube bias range
  146. DIY Phono Preamp ??
  147. NOS 211 RCA or National Union?
  148. Iron Powder + Resin Output Transformer
  149. The Radio Hat Challenge
  150. EU regulations
  151. Transconductance for kt-90 in plain english
  152. Craftsmen RC-2
  153. Valve Amplification Company V100
  154. Parallel feed transformer with SRPP
  155. It's heeeeeere!- Valve Amplifiers 4th Edition
  156. opera consonance phonostage-PM1
  157. Anybody Explain this Preamp shematic?
  158. The high-voltage collection
  159. Input transformer topology question
  160. JE Labs 300Bdx stereo - troubleshooting
  161. battery operated 12/24/48 Volt multiple tube OTL
  162. Bringing up long-stored tube gear
  163. About RH84 three channel?
  164. MCC with Fisher
  165. Directly heated cathodes
  166. Build recommendation
  167. Ortofon KS 591 - informations
  168. Oatley K295-extra space for tubes
  169. A beginner's tube amp to drive a pair of fostex Fe103e
  170. Tame the beast.
  171. KT88 and Hammond Transformer
  172. B+ Drifts down after 2 hours
  173. Power amp sputters on turnoff
  174. Yet another EQP-1A
  175. How to bias 6SL7?
  176. 6CG7/6FQ7 = 6N5P (6Н5П)
  177. #27 mu stage
  178. Compactron Regulated Power Supply
  179. Best sounding voltage amplifier for hybride.
  180. PX25 to 300B pins
  181. de-gassing power tubes???
  182. Heathkit 51-29 output transformers issure
  183. 6AS7 Model
  184. 26H choke good enough for a grid or anode choke?
  185. Russian 6R2P for small amp.
  186. Power transformer primary is open.
  187. Rectifier oddness
  188. First Tube Build, Thoughts?
  189. Output Transformers
  190. Lazy Sunday 6SN7 Preamp
  191. Audio research VT200 Biasing & Schematic
  192. finished my new preamplifier!!
  193. What would be the correct output cap for this OTL Headphone Amp?
  194. Full Bridge Rectifier With Tubes
  195. Looking for data sheet for GE JAN 6146W/7212
  196. Best Valve pre-amp match for ME 550 amp
  197. Fisher 500c
  198. From old Philips tube books , just for tube audio DIY friends !
  199. UFO
  200. Adding a preamp?
  201. XS-225 valve amp circuit.
  202. LS7/CV1660 curves
  203. Differences between 12V6 tube and 12A6 tube?
  204. Please check my schematic
  205. 12W Push pull w/6C4C
  206. Tube Date Code
  207. For new members....
  208. Graphite ring on sweep tubes
  209. 6N6P tube - focus on
  210. Hot tube preamp pedal build
  211. Radford STA100 improvements?
  212. Playmaster unit 2 help needed!
  213. help me build an output transformer
  214. Vintage Magnavox tube amp
  215. Christmas Build, advice needed.
  216. Speaker suggestions for ST-70
  217. Tube markings?
  218. gaumont-kalee
  219. amplifiers audio research D90
  220. 40W Glass A 300B tube schematic needed.
  221. Hum in one channel only
  222. Water cooling Power Tubes
  223. Toroid Output Transformer from Plitron
  224. Scott LK-30 Assembly Manual Needed
  225. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  226. The best valve amp!
  227. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  228. More probably stupid questions about feedback
  229. single stage amp?
  230. SS 83 again
  231. Making Spice Models for tubes
  232. Seth mk 2 ???
  233. Colorful inspiration
  234. Testing KT-90's Ei NIs Yugoslavia
  235. El Cheapo Transformer Question
  236. Why does the grid extend so far beyond the anode ?
  237. Valve amplifier identification
  238. E-M-field problem
  239. Effective cathode resistance
  240. Spectrum evaluation ECC82
  241. power d90-b
  242. el34, kt88, kt90, 6550 to 8417 conversion
  243. Do you know these capacitors?
  244. GRAAF GAAFiti WFB ONE - Schematic needed
  245. Oscillation WE417A
  246. EL84 fixed fixed bias
  247. Blown stereo
  248. 807/6au6 pure pentode mode amplifier
  249. help with ID'ing a tube
  250. Magnavox 50EH5 Stereo Amp

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