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  1. 8156 Beam Pentode Compactron
  2. DOUBLE TRIODE (6N16B)
  3. looking for Tube I/V analog for dac schematic ?
  4. NewBee PPEL84
  5. Whooaa! Now we're talking.
  6. Cinema Engineering AT-18
  7. Back from school
  8. Amp ideas for my spare 3.3k output transformers.
  9. HEllo and a few suggestions please
  10. 1SH24B Pre-Amp (or buffer?)
  11. Anode cap for GU 29 / QQE06/40
  12. Back to back autotransformers for B+?
  13. Sound Valves M60 schematics
  14. Volume Pot for RH84
  15. Mengyue mini el34b
  16. Which Chinese integrated tube amp have the power for Rock Song ?
  17. Help on transformers please
  18. 300B alternatives
  19. Anybody using a tube amp in their car?
  20. What is a KT88-98?
  21. 6au6 line stage a bad idea?
  22. Making a Kron tube
  23. AY Symphonies preamp
  24. Need to Upgrade Tube Preamp Volume Pot
  25. Tubelab Simple SE low B+
  26. Filament AC or DC?
  27. rasping sound from Dared VP-16
  28. Anyone have any "small signal" pentode models?
  29. Power amp distortion for modern amps
  30. Help with EL504-based amplifier
  31. Tubes: Are they worth it?
  32. Radio Shack Boston Monobloc (fuse question)
  33. 829B 3E29 Pentode PPP?
  34. Fixed Autobias?
  35. Best wishes
  36. Radiotron A504 amplifier schematic
  37. Blown power tube - a short story
  38. Hickok 752A calibration?
  39. replace EL34 with EL37 !?
  40. Mono push-pull driver PCB
  41. Magnavox 139AA schematics, info?
  42. Anyone knows what driver tube on DowdyLama's GM-70......
  43. Building an amp around the QB5/1750 transmitter tube
  44. Instrument amp from '59 Lowrey donor chassis.
  45. cascoded gyrator loaded 6H9C to low idle.
  46. vacuum tube DAC and connection
  47. Dynaco ST70 II Right Channel Out
  48. ST70 Inrush Issue
  49. ECC88 OTL heaphone amp
  50. Help with deciding to build or buy Tube amp.
  51. Luxman LV-105 static on on channel
  52. equivlent of FU-50
  53. placing the volume control
  54. PP 300B ''transformer coupled''
  55. My First Tube Preamp
  56. Tube amp kit and speaker recommendations?
  57. First design GU81M SE triode
  58. Instruments & Amps forum - where is it?
  59. Power supply capacitor question for tubelab simple ss
  60. EL300 = 6FN5 / PL300 = 35FN5 tube
  61. 6U8 driving 45
  62. very low impedance white follower with 6H13C
  63. EL86 Any idea helps.
  64. 6112 and 6111 Mini-preamp
  65. Expert advice on what preamp to chose
  66. Harman Kardon DPR-7, Commander series pre/mixer
  67. input transformer - mumetal casing etc.
  68. Oil-filled caps: ASC versus Panasonic
  69. SOHA headphone amp
  70. Using a single triode as a .......
  71. Sonic Frontiers SFP-1 Phono Stage
  72. Help!! with attenuation.
  73. power up inrush current limiter - anyone using?
  74. Audioromy FU-29, Latest Model 828A Mini Review
  75. Vertical-deflection
  76. Drilling a hole
  77. Edcor CXPP25-MS-8K V Triode Z-565
  78. bad opt measured values
  79. Mu Follower Driver for Push-Pull
  80. Hickok 539 question...
  81. need datasheets for a phillips transformer if anyone has any
  82. Chicago power XFMR question.
  83. Coupling Capacitor - Pls Help
  84. Help please on Christmas gift
  85. Audio Note P-zero
  86. SE EL34 Schematic - What do you think?
  87. Playing with hybrid amp: SRPP + MOSFET
  88. 300B filament supply question
  89. KT88 Parallel Push Pull
  90. cheating life out of old tubes?
  91. dBu transformer ratings
  92. Dared MP-2a3c mods
  93. Output transformers (Wolpert)
  94. Using Mains Transformers as Outputs
  95. Tube just for show...
  96. first project - first post - poddwatt
  97. High power CCS
  98. Analog Summing
  99. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  100. cascode tubes
  101. High Fidelity by Pilot (circa 1953)
  102. Hardware help please
  103. integrated amps 100 per channel
  104. KT88 mounting question
  105. Output Transformer question
  106. Angstrom Thermionic
  107. ECC88 tube buffer NEEDED !
  108. Marshall 8080, missing components
  109. Paralell SE 807 Amp design
  110. Putting together a tweaker friendly amplifier!
  111. Tube chassis
  112. DHT headphone Hybrid-CF+
  113. Looking for specs on this Beyer Xfmr
  114. Resistors for Berning EA-2101?
  115. Uneven Plate Glow
  116. Parafeed transformer sounds thin
  117. Lightbulbs as ccs
  118. My AWESOME First DIY amp
  119. Cary audio design SLI 80
  120. A1538 OPT?
  121. Genalex A2900 Keep or Sell?
  122. 6CB6 Spice Model wanted
  123. XFMR Help?
  124. 12 volt to 300 volt inverter question for tubes
  125. These amps should be verboten!
  126. how to use PCL86 instead of ecl86
  127. PSU for Aikido (4x 12SN7)
  128. SCA35 and AU-70
  129. Analisys of power amp limitations of tube bias range
  130. DIY Phono Preamp ??
  131. NOS 211 RCA or National Union?
  132. Iron Powder + Resin Output Transformer
  133. The Radio Hat Challenge
  134. EU regulations
  135. Transconductance for kt-90 in plain english
  136. Craftsmen RC-2
  137. Valve Amplification Company V100
  138. Parallel feed transformer with SRPP
  139. It's heeeeeere!- Valve Amplifiers 4th Edition
  140. opera consonance phonostage-PM1
  141. Anybody Explain this Preamp shematic?
  142. The high-voltage collection
  143. Input transformer topology question
  144. JE Labs 300Bdx stereo - troubleshooting
  145. battery operated 12/24/48 Volt multiple tube OTL
  146. Bringing up long-stored tube gear
  147. About RH84 three channel?
  148. MCC with Fisher
  149. Directly heated cathodes
  150. Build recommendation
  151. Ortofon KS 591 - informations
  152. Oatley K295-extra space for tubes
  153. A beginner's tube amp to drive a pair of fostex Fe103e
  154. Tame the beast.
  155. KT88 and Hammond Transformer
  156. B+ Drifts down after 2 hours
  157. Power amp sputters on turnoff
  158. Yet another EQP-1A
  159. How to bias 6SL7?
  160. 6CG7/6FQ7 = 6N5P (6Н5П)
  161. #27 mu stage
  162. Compactron Regulated Power Supply
  163. Best sounding voltage amplifier for hybride.
  164. PX25 to 300B pins
  165. de-gassing power tubes???
  166. Heathkit 51-29 output transformers issure
  167. 6AS7 Model
  168. 26H choke good enough for a grid or anode choke?
  169. Russian 6R2P for small amp.
  170. Power transformer primary is open.
  171. Rectifier oddness
  172. First Tube Build, Thoughts?
  173. Output Transformers
  174. Lazy Sunday 6SN7 Preamp
  175. Audio research VT200 Biasing & Schematic
  176. finished my new preamplifier!!
  177. What would be the correct output cap for this OTL Headphone Amp?
  178. Full Bridge Rectifier With Tubes
  179. Looking for data sheet for GE JAN 6146W/7212
  180. Best Valve pre-amp match for ME 550 amp
  181. Fisher 500c
  182. From old Philips tube books , just for tube audio DIY friends !
  183. UFO
  184. Adding a preamp?
  185. XS-225 valve amp circuit.
  186. LS7/CV1660 curves
  187. Differences between 12V6 tube and 12A6 tube?
  188. Please check my schematic
  189. 12W Push pull w/6C4C
  190. Tube Date Code
  191. For new members....
  192. Graphite ring on sweep tubes
  193. 6N6P tube - focus on
  194. Vox Guitar Amp Created a Revolution
  195. Hot tube preamp pedal build
  196. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  197. Radford STA100 improvements?
  198. Playmaster unit 2 help needed!
  199. help me build an output transformer
  200. Vintage Magnavox tube amp
  201. Christmas Build, advice needed.
  202. Speaker suggestions for ST-70
  203. Tube markings?
  204. gaumont-kalee
  205. amplifiers audio research D90
  206. 40W Glass A 300B tube schematic needed.
  207. Hum in one channel only
  208. Water cooling Power Tubes
  209. Toroid Output Transformer from Plitron
  210. Scott LK-30 Assembly Manual Needed
  211. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  212. The best valve amp!
  213. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  214. More probably stupid questions about feedback
  215. single stage amp?
  216. SS 83 again
  217. Making Spice Models for tubes
  218. Seth mk 2 ???
  219. Colorful inspiration
  220. Testing KT-90's Ei NIs Yugoslavia
  221. El Cheapo Transformer Question
  222. Why does the grid extend so far beyond the anode ?
  223. Valve amplifier identification
  224. E-M-field problem
  225. Effective cathode resistance
  226. Spectrum evaluation ECC82
  227. power d90-b
  228. el34, kt88, kt90, 6550 to 8417 conversion
  229. Do you know these capacitors?
  230. Vintage Capacitor Identification??
  231. GRAAF GAAFiti WFB ONE - Schematic needed
  232. Oscillation WE417A
  233. EL84 fixed fixed bias
  234. Blown stereo
  235. 807/6au6 pure pentode mode amplifier
  236. help with ID'ing a tube
  237. Magnavox 50EH5 Stereo Amp
  238. My new Circlotron OTL tube power Amp.
  239. ideas for a tube eating guitair amp
  240. 6DE4, unused pins
  241. 300B what output transformer Sowter or Lundahl?
  242. 6DJ8 preamp w/balanced input - strange schematic
  243. Screen Grid Regulation Requirements
  244. Advice needed on new 6L6 ro 6V6 SE or SET build
  245. need a little help with an HK solo2 tube receiver
  246. Help me to build Vacuum Tube Amp.
  247. amp with SRPP output stage? post if you know one
  248. Output transformer question
  249. EF86 Phono pre-amp or Mcintosh MC2200?
  250. Transcendar is Branching Out

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