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  1. Using a single triode as a .......
  2. Sonic Frontiers SFP-1 Phono Stage
  3. Help!! with attenuation.
  4. power up inrush current limiter - anyone using?
  5. Audioromy FU-29, Latest Model 828A Mini Review
  6. Vertical-deflection
  7. Drilling a hole
  8. Edcor CXPP25-MS-8K V Triode Z-565
  9. bad opt measured values
  10. Mu Follower Driver for Push-Pull
  11. Hickok 539 question...
  12. need datasheets for a phillips transformer if anyone has any
  13. Chicago power XFMR question.
  14. Help please on Christmas gift
  15. Audio Note P-zero
  16. SE EL34 Schematic - What do you think?
  17. Playing with hybrid amp: SRPP + MOSFET
  18. 300B filament supply question
  19. KT88 Parallel Push Pull
  20. cheating life out of old tubes?
  21. dBu transformer ratings
  22. Dared MP-2a3c mods
  23. Output transformers (Wolpert)
  24. Using Mains Transformers as Outputs
  25. Tube just for show...
  26. first project - first post - poddwatt
  27. High power CCS
  28. Analog Summing
  29. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  30. cascode tubes
  31. High Fidelity by Pilot (circa 1953)
  32. Hardware help please
  33. integrated amps 100 per channel
  34. KT88 mounting question
  35. Output Transformer question
  36. Angstrom Thermionic
  37. ECC88 tube buffer NEEDED !
  38. Paralell SE 807 Amp design
  39. Putting together a tweaker friendly amplifier!
  40. Tube chassis
  41. DHT headphone Hybrid-CF+
  42. Looking for specs on this Beyer Xfmr
  43. Resistors for Berning EA-2101?
  44. Uneven Plate Glow
  45. Parafeed transformer sounds thin
  46. Lightbulbs as ccs
  47. My AWESOME First DIY amp
  48. Cary audio design SLI 80
  49. A1538 OPT?
  50. Genalex A2900 Keep or Sell?
  51. 6CB6 Spice Model wanted
  52. XFMR Help?
  53. 12 volt to 300 volt inverter question for tubes
  54. These amps should be verboten!
  55. how to use PCL86 instead of ecl86
  56. PSU for Aikido (4x 12SN7)
  57. SCA35 and AU-70
  58. Analisys of power amp limitations of tube bias range
  59. DIY Phono Preamp ??
  60. NOS 211 RCA or National Union?
  61. Iron Powder + Resin Output Transformer
  62. The Radio Hat Challenge
  63. EU regulations
  64. Transconductance for kt-90 in plain english
  65. Craftsmen RC-2
  66. Valve Amplification Company V100
  67. Parallel feed transformer with SRPP
  68. It's heeeeeere!- Valve Amplifiers 4th Edition
  69. opera consonance phonostage-PM1
  70. Anybody Explain this Preamp shematic?
  71. The high-voltage collection
  72. Input transformer topology question
  73. JE Labs 300Bdx stereo - troubleshooting
  74. battery operated 12/24/48 Volt multiple tube OTL
  75. Bringing up long-stored tube gear
  76. About RH84 three channel?
  77. MCC with Fisher
  78. Directly heated cathodes
  79. Build recommendation
  80. Ortofon KS 591 - informations
  81. Oatley K295-extra space for tubes
  82. A beginner's tube amp to drive a pair of fostex Fe103e
  83. Tame the beast.
  84. KT88 and Hammond Transformer
  85. B+ Drifts down after 2 hours
  86. Power amp sputters on turnoff
  87. Yet another EQP-1A
  88. How to bias 6SL7?
  89. 6CG7/6FQ7 = 6N5P (6Н5П)
  90. #27 mu stage
  91. Compactron Regulated Power Supply
  92. Best sounding voltage amplifier for hybride.
  93. PX25 to 300B pins
  94. de-gassing power tubes???
  95. Heathkit 51-29 output transformers issure
  96. 6AS7 Model
  97. 26H choke good enough for a grid or anode choke?
  98. Russian 6R2P for small amp.
  99. Power transformer primary is open.
  100. Rectifier oddness
  101. First Tube Build, Thoughts?
  102. Output Transformers
  103. Lazy Sunday 6SN7 Preamp
  104. Audio research VT200 Biasing & Schematic
  105. finished my new preamplifier!!
  106. What would be the correct output cap for this OTL Headphone Amp?
  107. Full Bridge Rectifier With Tubes
  108. Looking for data sheet for GE JAN 6146W/7212
  109. Best Valve pre-amp match for ME 550 amp
  110. Fisher 500c
  111. From old Philips tube books , just for tube audio DIY friends !
  112. UFO
  113. Adding a preamp?
  114. XS-225 valve amp circuit.
  115. LS7/CV1660 curves
  116. Differences between 12V6 tube and 12A6 tube?
  117. Please check my schematic
  118. 12W Push pull w/6C4C
  119. Tube Date Code
  120. For new members....
  121. Graphite ring on sweep tubes
  122. 6N6P tube - focus on
  123. Hot tube preamp pedal build
  124. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  125. Radford STA100 improvements?
  126. Playmaster unit 2 help needed!
  127. help me build an output transformer
  128. Vintage Magnavox tube amp
  129. Christmas Build, advice needed.
  130. Speaker suggestions for ST-70
  131. Tube markings?
  132. gaumont-kalee
  133. amplifiers audio research D90
  134. 40W Glass A 300B tube schematic needed.
  135. Hum in one channel only
  136. Water cooling Power Tubes
  137. Toroid Output Transformer from Plitron
  138. Scott LK-30 Assembly Manual Needed
  139. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  140. The best valve amp!
  141. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  142. More probably stupid questions about feedback
  143. single stage amp?
  144. SS 83 again
  145. Making Spice Models for tubes
  146. Seth mk 2 ???
  147. Colorful inspiration
  148. Testing KT-90's Ei NIs Yugoslavia
  149. El Cheapo Transformer Question
  150. Why does the grid extend so far beyond the anode ?
  151. Valve amplifier identification
  152. E-M-field problem
  153. Effective cathode resistance
  154. Spectrum evaluation ECC82
  155. power d90-b
  156. el34, kt88, kt90, 6550 to 8417 conversion
  157. Do you know these capacitors?
  158. GRAAF GAAFiti WFB ONE - Schematic needed
  159. Oscillation WE417A
  160. EL84 fixed fixed bias
  161. Blown stereo
  162. 807/6au6 pure pentode mode amplifier
  163. help with ID'ing a tube
  164. Magnavox 50EH5 Stereo Amp
  165. My new Circlotron OTL tube power Amp.
  166. ideas for a tube eating guitair amp
  167. 6DE4, unused pins
  168. 300B what output transformer Sowter or Lundahl?
  169. 6DJ8 preamp w/balanced input - strange schematic
  170. Screen Grid Regulation Requirements
  171. Advice needed on new 6L6 ro 6V6 SE or SET build
  172. need a little help with an HK solo2 tube receiver
  173. Help me to build Vacuum Tube Amp.
  174. amp with SRPP output stage? post if you know one
  175. Output transformer question
  176. EF86 Phono pre-amp or Mcintosh MC2200?
  177. Transcendar is Branching Out
  178. can SE driven PP be clean enough to sound SE ?
  179. k12-m amp not working
  180. 813 amp and old choke
  181. Several hundred tubes found! What to do!
  182. Possible to convert Audiorom Fu29 to Single end?
  183. Measuring bias
  184. ecc802s SRPP preamplifier
  185. HELP! Capacitor specs for Sonic Frontiers SFC-1 Control Amplifier
  186. Class A KT88 info
  187. What is screen tap of transformer?
  188. Brightest heaters in tubes?
  189. 40% tap or not
  190. 6dj8 phono schematic needed
  191. EL34 Parts..
  192. solid state driven p-p ultralinear
  193. linestage w/separate PSU: where to "split" ?
  194. Anybody know this TELEFUNKEN SE transformer?
  195. Too much feedback?
  196. Tube Power Supply Dummy Load
  197. For 6c33 Fans. A new schematic
  198. WAD phono 3 motorboating with Raphaelite 300b
  199. Help! Tube Tester in Austin or Lago Vista?
  200. Vintage Stromberg Carlson
  201. GM70 and Other LTSpice Tube Models
  202. Please help me understand this feedback
  203. Affordable Valve Company - Re-bias
  204. The effect of different value coupling capacitors?
  205. Closed loop stability help needed.
  206. EAR 509 OPT Impedances
  207. Installing Hammond 1609s in K12-G
  208. 6088 Amplifier
  209. Valve Art kt88 not the same ring getter?
  210. 5mA DC transformer - tube output stage?
  211. Mini amp questions
  212. What mean those russian electronic units ?
  213. Coupling capacitors
  214. Monsters thread (high power tube amps)
  215. CCS on LTP please help
  216. Best type of pre-amp for valve/tube power amp
  217. 12au7 made by Toshiba, Hitachi, Matsushita, RSD, International and Miniwatt?
  218. Load lines
  219. Cold cathode tubes
  220. Redundant CNC stainless steel enclosures
  221. First try P-P 6S41S design
  222. Help!!! I need to get valve TAW12/20B / TRIODE for use as HF amplifier and oscillator
  223. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  224. 12AT7 Regulated Power Supply
  225. 2A3 to 45 Cathode Wattage?
  226. Cheap Chinese Ebay Amps
  227. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  228. Transformer Center Taps
  229. PTX temps
  230. Can A valve amplifier be both Class A and Class B?
  231. got a problem with my scope, need some advice
  232. DC coupled cathode follower driving me nuts
  233. Vacuum state gone?
  234. 1634 dual triode
  235. Aikido line amp
  236. Winding an ISO TX with pair of inductors
  237. Quad II Switch Mode PSU
  238. What do do with all of these?
  239. global negative feedback in el84 push pull
  240. Old HP transformer - what is it?
  241. FET Phase inverter to drive valve PA
  242. Core Audio 6BC4 buffer problem
  243. Power Amplifiers & Gain
  244. Power tube maximum current draw from a power supply
  245. Tube Matching in a Power Amp?
  246. SE stereo / PP mono block schematic choices
  247. How to measure output transformer?
  248. Shoddy Packaging
  249. Schematic needed for Manley SnapperŪ from Manley Labs
  250. Resistor, capacitor across output transformer AKAI M-7

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