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  1. ECC88 tube buffer NEEDED !
  2. Marshall 8080, missing components
  3. Paralell SE 807 Amp design
  4. Putting together a tweaker friendly amplifier!
  5. Tube chassis
  6. DHT headphone Hybrid-CF+
  7. Looking for specs on this Beyer Xfmr
  8. Resistors for Berning EA-2101?
  9. Uneven Plate Glow
  10. Parafeed transformer sounds thin
  11. Lightbulbs as ccs
  12. My AWESOME First DIY amp
  13. Cary audio design SLI 80
  14. A1538 OPT?
  15. Genalex A2900 Keep or Sell?
  16. 6CB6 Spice Model wanted
  17. XFMR Help?
  18. 12 volt to 300 volt inverter question for tubes
  19. These amps should be verboten!
  20. how to use PCL86 instead of ecl86
  21. PSU for Aikido (4x 12SN7)
  22. SCA35 and AU-70
  23. Analisys of power amp limitations of tube bias range
  24. DIY Phono Preamp ??
  25. NOS 211 RCA or National Union?
  26. Iron Powder + Resin Output Transformer
  27. The Radio Hat Challenge
  28. EU regulations
  29. Transconductance for kt-90 in plain english
  30. Craftsmen RC-2
  31. Valve Amplification Company V100
  32. Parallel feed transformer with SRPP
  33. It's heeeeeere!- Valve Amplifiers 4th Edition
  34. opera consonance phonostage-PM1
  35. Anybody Explain this Preamp shematic?
  36. The high-voltage collection
  37. Input transformer topology question
  38. JE Labs 300Bdx stereo - troubleshooting
  39. battery operated 12/24/48 Volt multiple tube OTL
  40. Bringing up long-stored tube gear
  41. About RH84 three channel?
  42. MCC with Fisher
  43. Directly heated cathodes
  44. Build recommendation
  45. Ortofon KS 591 - informations
  46. Oatley K295-extra space for tubes
  47. A beginner's tube amp to drive a pair of fostex Fe103e
  48. Tame the beast.
  49. KT88 and Hammond Transformer
  50. B+ Drifts down after 2 hours
  51. Power amp sputters on turnoff
  52. Yet another EQP-1A
  53. How to bias 6SL7?
  54. 6CG7/6FQ7 = 6N5P (6Н5П)
  55. #27 mu stage
  56. Compactron Regulated Power Supply
  57. Best sounding voltage amplifier for hybride.
  58. PX25 to 300B pins
  59. de-gassing power tubes???
  60. Heathkit 51-29 output transformers issure
  61. 6AS7 Model
  62. 26H choke good enough for a grid or anode choke?
  63. Russian 6R2P for small amp.
  64. Power transformer primary is open.
  65. Rectifier oddness
  66. First Tube Build, Thoughts?
  67. Output Transformers
  68. Lazy Sunday 6SN7 Preamp
  69. Audio research VT200 Biasing & Schematic
  70. finished my new preamplifier!!
  71. What would be the correct output cap for this OTL Headphone Amp?
  72. Full Bridge Rectifier With Tubes
  73. Looking for data sheet for GE JAN 6146W/7212
  74. Best Valve pre-amp match for ME 550 amp
  75. Fisher 500c
  76. From old Philips tube books , just for tube audio DIY friends !
  77. UFO
  78. Adding a preamp?
  79. XS-225 valve amp circuit.
  80. LS7/CV1660 curves
  81. Differences between 12V6 tube and 12A6 tube?
  82. Please check my schematic
  83. 12W Push pull w/6C4C
  84. Tube Date Code
  85. For new members....
  86. Graphite ring on sweep tubes
  87. 6N6P tube - focus on
  88. Vox Guitar Amp Created a Revolution
  89. Hot tube preamp pedal build
  90. Counterpoint Electronics/Counterpoint Acoustics/Counterpoint Audio
  91. Radford STA100 improvements?
  92. Playmaster unit 2 help needed!
  93. help me build an output transformer
  94. Vintage Magnavox tube amp
  95. Christmas Build, advice needed.
  96. Speaker suggestions for ST-70
  97. Tube markings?
  98. gaumont-kalee
  99. amplifiers audio research D90
  100. 40W Glass A 300B tube schematic needed.
  101. Hum in one channel only
  102. Water cooling Power Tubes
  103. Toroid Output Transformer from Plitron
  104. Scott LK-30 Assembly Manual Needed
  105. HUM STARTS 1 OR 2 HOUR AFTER THE AMP IS ON
  106. The best valve amp!
  107. Equivalents for 12AT7 and 6N11 ? (Sense G3 headphone amp)
  108. More probably stupid questions about feedback
  109. single stage amp?
  110. SS 83 again
  111. Making Spice Models for tubes
  112. Seth mk 2 ???
  113. Colorful inspiration
  114. Testing KT-90's Ei NIs Yugoslavia
  115. El Cheapo Transformer Question
  116. Why does the grid extend so far beyond the anode ?
  117. Valve amplifier identification
  118. E-M-field problem
  119. Effective cathode resistance
  120. Spectrum evaluation ECC82
  121. power d90-b
  122. el34, kt88, kt90, 6550 to 8417 conversion
  123. Do you know these capacitors?
  124. Vintage Capacitor Identification??
  125. GRAAF GAAFiti WFB ONE - Schematic needed
  126. Oscillation WE417A
  127. EL84 fixed fixed bias
  128. Blown stereo
  129. 807/6au6 pure pentode mode amplifier
  130. help with ID'ing a tube
  131. Magnavox 50EH5 Stereo Amp
  132. My new Circlotron OTL tube power Amp.
  133. ideas for a tube eating guitair amp
  134. 6DE4, unused pins
  135. 300B what output transformer Sowter or Lundahl?
  136. 6DJ8 preamp w/balanced input - strange schematic
  137. Screen Grid Regulation Requirements
  138. Advice needed on new 6L6 ro 6V6 SE or SET build
  139. need a little help with an HK solo2 tube receiver
  140. Help me to build Vacuum Tube Amp.
  141. amp with SRPP output stage? post if you know one
  142. Output transformer question
  143. EF86 Phono pre-amp or Mcintosh MC2200?
  144. Transcendar is Branching Out
  145. can SE driven PP be clean enough to sound SE ?
  146. k12-m amp not working
  147. 813 amp and old choke
  148. Several hundred tubes found! What to do!
  149. Possible to convert Audiorom Fu29 to Single end?
  150. Measuring bias
  151. ecc802s SRPP preamplifier
  152. HELP! Capacitor specs for Sonic Frontiers SFC-1 Control Amplifier
  153. Class A KT88 info
  154. What is screen tap of transformer?
  155. Brightest heaters in tubes?
  156. 40% tap or not
  157. 6dj8 phono schematic needed
  158. EL34 Parts..
  159. solid state driven p-p ultralinear
  160. linestage w/separate PSU: where to "split" ?
  161. Anybody know this TELEFUNKEN SE transformer?
  162. Too much feedback?
  163. Tube Power Supply Dummy Load
  164. For 6c33 Fans. A new schematic
  165. WAD phono 3 motorboating with Raphaelite 300b
  166. Help! Tube Tester in Austin or Lago Vista?
  167. Vintage Stromberg Carlson
  168. GM70 and Other LTSpice Tube Models
  169. Please help me understand this feedback
  170. Affordable Valve Company - Re-bias
  171. The effect of different value coupling capacitors?
  172. Closed loop stability help needed.
  173. EAR 509 OPT Impedances
  174. Installing Hammond 1609s in K12-G
  175. 6088 Amplifier
  176. Valve Art kt88 not the same ring getter?
  177. 5mA DC transformer - tube output stage?
  178. Mini amp questions
  179. What mean those russian electronic units ?
  180. Coupling capacitors
  181. Monsters thread (high power tube amps)
  182. CCS on LTP please help
  183. Best type of pre-amp for valve/tube power amp
  184. 12au7 made by Toshiba, Hitachi, Matsushita, RSD, International and Miniwatt?
  185. Load lines
  186. Cold cathode tubes
  187. Redundant CNC stainless steel enclosures
  188. First try P-P 6S41S design
  189. Help!!! I need to get valve TAW12/20B / TRIODE for use as HF amplifier and oscillator
  190. Velleman K4040 Stereo Vacuum Tube Amplifier Volume Control
  191. 12AT7 Regulated Power Supply
  192. 2A3 to 45 Cathode Wattage?
  193. Cheap Chinese Ebay Amps
  194. Audion Sterling Integrated Amp Version - Stereo MK-I - Extended Live Time wanted
  195. Transformer Center Taps
  196. Output transformer for 18watt
  197. PTX temps
  198. Can A valve amplifier be both Class A and Class B?
  199. got a problem with my scope, need some advice
  200. DC coupled cathode follower driving me nuts
  201. Vacuum state gone?
  202. 1634 dual triode
  203. Aikido line amp
  204. Winding an ISO TX with pair of inductors
  205. Quad II Switch Mode PSU
  206. What do do with all of these?
  207. global negative feedback in el84 push pull
  208. Old HP transformer - what is it?
  209. FET Phase inverter to drive valve PA
  210. Core Audio 6BC4 buffer problem
  211. JCM Build - Voltage problem!
  212. Power Amplifiers & Gain
  213. Power tube maximum current draw from a power supply
  214. Tube Matching in a Power Amp?
  215. SE stereo / PP mono block schematic choices
  216. How to measure output transformer?
  217. Peavey VTM 60 vs Orange Tiny Terror
  218. Shoddy Packaging
  219. Schematic needed for Manley SnapperŪ from Manley Labs
  220. Resistor, capacitor across output transformer AKAI M-7
  221. eBay&etc cheap tube buffers/preamp .. anything good?
  222. 6N3 Preamp Question
  223. OK guys...be gentle
  224. 6SN7 and DN2540's
  225. 10k and 6k primary windings on OPT. Use for UL?
  226. Settings for PL509, EZ80 tubes on 539c tester
  227. replacing 6LGC with 6550 or KT88
  228. ECC83 input circuitry
  229. Dynaco MK III modifications
  230. SMPS for heaters
  231. Headphone tube-amp with oddball OPT
  232. Neon Lamp Question
  233. Curious old tubes from tandy
  234. 828 Triode Curves?
  235. 813 review
  236. tube circlotron for headphone amplifier
  237. valve headphone pre-amp
  238. Shengyi 6AQ5
  239. Burn in small signal tubes?
  240. 24V powered 6N11 amplifier, 0.25% distortion, pretty good!
  241. SS diode replacements
  242. Bass guitar amp using 832a/GU32 tubes
  243. can you check if everything is ok with el84 schematic please
  244. Advice on this amp schematic please
  245. 8156's
  246. Can't get anything from my new pre-amp
  247. Bottlehead Paramount Question
  248. need help with ac/dc am/fm radio
  249. Peculiar oscillation
  250. ECC83 settings for Taylor 45C

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