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  1. MCC with Fisher
  2. Directly heated cathodes
  3. Build recommendation
  4. Ortofon KS 591 - informations
  5. Oatley K295-extra space for tubes
  6. A beginner's tube amp to drive a pair of fostex Fe103e
  7. Tame the beast.
  8. KT88 and Hammond Transformer
  9. B+ Drifts down after 2 hours
  10. Power amp sputters on turnoff
  11. Yet another EQP-1A
  12. How to bias 6SL7?
  13. 6CG7/6FQ7 = 6N5P (6Н5П)
  14. #27 mu stage
  15. Compactron Regulated Power Supply
  16. Best sounding voltage amplifier for hybride.
  17. PX25 to 300B pins
  18. de-gassing power tubes???
  19. Heathkit 51-29 output transformers issure
  20. 6AS7 Model
  21. 26H choke good enough for a grid or anode choke?
  22. Russian 6R2P for small amp.
  23. Power transformer primary is open.
  24. Rectifier oddness
  25. First Tube Build, Thoughts?
  26. Output Transformers
  27. Lazy Sunday 6SN7 Preamp
  28. Audio research VT200 Biasing & Schematic
  29. finished my new preamplifier!!
  30. What would be the correct output cap for this OTL Headphone Amp?
  31. Full Bridge Rectifier With Tubes
  32. Looking for data sheet for GE JAN 6146W/7212
  33. Best Valve pre-amp match for ME 550 amp
  34. Fisher 500c
  35. From old Philips tube books , just for tube audio DIY friends !
  36. UFO
  37. Adding a preamp?
  38. XS-225 valve amp circuit.
  39. LS7/CV1660 curves
  40. Differences between 12V6 tube and 12A6 tube?
  41. Please check my schematic
  42. 12W Push pull w/6C4C
  43. Tube Date Code
  44. For new members....
  45. Graphite ring on sweep tubes
  46. 6N6P tube - focus on
  47. Vox Guitar Amp Created a Revolution
  48. Hot tube preamp pedal build
  49. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  50. Radford STA100 improvements?
  51. Playmaster unit 2 help needed!
  52. help me build an output transformer
  53. Vintage Magnavox tube amp
  54. Christmas Build, advice needed.
  55. Speaker suggestions for ST-70
  56. Tube markings?
  57. gaumont-kalee
  58. amplifiers audio research D90
  59. 40W Glass A 300B tube schematic needed.
  60. Hum in one channel only
  61. Water cooling Power Tubes
  62. Toroid Output Transformer from Plitron
  63. Scott LK-30 Assembly Manual Needed
  64. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  65. The best valve amp!
  66. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  67. More probably stupid questions about feedback
  68. single stage amp?
  69. SS 83 again
  70. Making Spice Models for tubes
  71. Seth mk 2 ???
  72. Colorful inspiration
  73. Testing KT-90's Ei NIs Yugoslavia
  74. El Cheapo Transformer Question
  75. Why does the grid extend so far beyond the anode ?
  76. Valve amplifier identification
  77. E-M-field problem
  78. Effective cathode resistance
  79. Spectrum evaluation ECC82
  80. power d90-b
  81. el34, kt88, kt90, 6550 to 8417 conversion
  82. Do you know these capacitors?
  83. Vintage Capacitor Identification??
  84. GRAAF GAAFiti WFB ONE - Schematic needed
  85. Oscillation WE417A
  86. EL84 fixed fixed bias
  87. Blown stereo
  88. 807/6au6 pure pentode mode amplifier
  89. help with ID'ing a tube
  90. Magnavox 50EH5 Stereo Amp
  91. My new Circlotron OTL tube power Amp.
  92. ideas for a tube eating guitair amp
  93. 6DE4, unused pins
  94. 300B what output transformer Sowter or Lundahl?
  95. 6DJ8 preamp w/balanced input - strange schematic
  96. Screen Grid Regulation Requirements
  97. Advice needed on new 6L6 ro 6V6 SE or SET build
  98. need a little help with an HK solo2 tube receiver
  99. Help me to build Vacuum Tube Amp.
  100. amp with SRPP output stage? post if you know one
  101. Output transformer question
  102. EF86 Phono pre-amp or Mcintosh MC2200?
  103. Transcendar is Branching Out
  104. can SE driven PP be clean enough to sound SE ?
  105. k12-m amp not working
  106. 813 amp and old choke
  107. Several hundred tubes found! What to do!
  108. Possible to convert Audiorom Fu29 to Single end?
  109. Measuring bias
  110. ecc802s SRPP preamplifier
  111. HELP! Capacitor specs for Sonic Frontiers SFC-1 Control Amplifier
  112. Class A KT88 info
  113. What is screen tap of transformer?
  114. Brightest heaters in tubes?
  115. 40% tap or not
  116. 6dj8 phono schematic needed
  117. EL34 Parts..
  118. solid state driven p-p ultralinear
  119. linestage w/separate PSU: where to "split" ?
  120. Anybody know this TELEFUNKEN SE transformer?
  121. Too much feedback?
  122. Tube Power Supply Dummy Load
  123. For 6c33 Fans. A new schematic
  124. WAD phono 3 motorboating with Raphaelite 300b
  125. Help! Tube Tester in Austin or Lago Vista?
  126. Vintage Stromberg Carlson
  127. GM70 and Other LTSpice Tube Models
  128. Please help me understand this feedback
  129. Affordable Valve Company - Re-bias
  130. The effect of different value coupling capacitors?
  131. Closed loop stability help needed.
  132. EAR 509 OPT Impedances
  133. Installing Hammond 1609s in K12-G
  134. 6088 Amplifier
  135. Valve Art kt88 not the same ring getter?
  136. 5mA DC transformer - tube output stage?
  137. Mini amp questions
  138. What mean those russian electronic units ?
  139. Coupling capacitors
  140. Monsters thread (high power tube amps)
  141. CCS on LTP please help
  142. Best type of pre-amp for valve/tube power amp
  143. 12au7 made by Toshiba, Hitachi, Matsushita, RSD, International and Miniwatt?
  144. Load lines
  145. Cold cathode tubes
  146. Redundant CNC stainless steel enclosures
  147. First try P-P 6S41S design
  148. Help!!! I need to get valve TAW12/20B / TRIODE for use as HF amplifier and oscillator
  149. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  150. 12AT7 Regulated Power Supply
  151. 2A3 to 45 Cathode Wattage?
  152. Cheap Chinese Ebay Amps
  153. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  154. Transformer Center Taps
  155. Output transformer for 18watt
  156. PTX temps
  157. Can A valve amplifier be both Class A and Class B?
  158. got a problem with my scope, need some advice
  159. DC coupled cathode follower driving me nuts
  160. Vacuum state gone?
  161. 1634 dual triode
  162. Aikido line amp
  163. Winding an ISO TX with pair of inductors
  164. Quad II Switch Mode PSU
  165. What do do with all of these?
  166. global negative feedback in el84 push pull
  167. Old HP transformer - what is it?
  168. FET Phase inverter to drive valve PA
  169. Core Audio 6BC4 buffer problem
  170. JCM Build - Voltage problem!
  171. Power Amplifiers & Gain
  172. Power tube maximum current draw from a power supply
  173. Tube Matching in a Power Amp?
  174. SE stereo / PP mono block schematic choices
  175. How to measure output transformer?
  176. Peavey VTM 60 vs Orange Tiny Terror
  177. Shoddy Packaging
  178. Schematic needed for Manley SnapperŪ from Manley Labs
  179. Resistor, capacitor across output transformer AKAI M-7
  180. eBay&etc cheap tube buffers/preamp .. anything good?
  181. 6N3 Preamp Question
  182. OK guys...be gentle
  183. 6SN7 and DN2540's
  184. 10k and 6k primary windings on OPT. Use for UL?
  185. Settings for PL509, EZ80 tubes on 539c tester
  186. replacing 6LGC with 6550 or KT88
  187. ECC83 input circuitry
  188. Dynaco MK III modifications
  189. SMPS for heaters
  190. Headphone tube-amp with oddball OPT
  191. Neon Lamp Question
  192. Curious old tubes from tandy
  193. 828 Triode Curves?
  194. 813 review
  195. tube circlotron for headphone amplifier
  196. valve headphone pre-amp
  197. Shengyi 6AQ5
  198. Burn in small signal tubes?
  199. 24V powered 6N11 amplifier, 0.25% distortion, pretty good!
  200. SS diode replacements
  201. Bass guitar amp using 832a/GU32 tubes
  202. can you check if everything is ok with el84 schematic please
  203. Advice on this amp schematic please
  204. 8156's
  205. Can't get anything from my new pre-amp
  206. Bottlehead Paramount Question
  207. need help with ac/dc am/fm radio
  208. Peculiar oscillation
  209. ECC83 settings for Taylor 45C
  210. New Jolida 302b amp owner questions
  211. Help with gyrator
  212. Some basic questions...
  213. I have a hard one for you guys
  214. CCS pulsing oscillation problem
  215. tube testers: different gM standards for same tube?
  216. Frank's Pre Still In Vogue?
  217. Home made tube amps
  218. Source for SED "winged C" tubes?
  219. Preamp Help
  220. Push Pull Class A
  221. Multi-Ways Output Transformers
  222. Redplating anomaly?
  223. Marshall JCM900 2500 preamp
  224. Just for fun power poll!
  225. BIASING A JADIS ORCHESTRA
  226. Yaqin MC-50L
  227. CJ PV5 Upgrades?
  228. New Member - Magnavox Amps
  229. Double parafeed
  230. 6550 grid characteristic help please
  231. Newbie- Tube Testing RF Amp tube
  232. Urgent:Wrongly order 220V Power supply for 230V enviroment
  233. Mono sub-out from one trafo?
  234. Mu Follower to drive a Push-Pull Amplifier?
  235. The 6934A Triode Tube
  236. Constant current sink for 6SN7
  237. 6V6 high voltage
  238. VTL deluxe 100 monoblk (KT88) need help?
  239. Va,Ia exeed limiting values in datasheeds ?
  240. Old DIYtube ST-35 electrolytics - swap?
  241. What Hammond for UK?
  242. What would you build with this transformer set?
  243. EL86 / 6CW5 + 6BQ7A amp design
  244. Western Electric theater amplifiers; how to hook them up?
  245. 12AU7,12B4A PSE schematic needs finishing!
  246. Dual grid and plate pins
  247. Best sounding ECC83 ?
  248. tube output for Playstation 1
  249. 6GX8 as Audio Level Indicator?
  250. Wurlitzer 6150 Organ Tube Amp convert Guitar Amp

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