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  1. Vintage output transformer ID
  2. Getting Rid of Some Stickys
  3. Grid is Referenced To Ground through resistor? WHAT?
  4. AP testing of the 6L6 SE
  5. output impedance
  6. 11BM8 heater wiring question
  7. Lower AC ripple on one side of coupling cap than the other side?
  8. HELP!! K12G Valve kit transformer
  9. 4 x EL34 or 2 x 6550 in a pp amp
  10. 5965 Telefunken tube U mh CO label ?
  11. 845 IT couple amp
  12. What makes an output tube "run away"
  13. P. Millett Engineers Amplifier
  14. Biasing problem
  15. Direct coupled driver stage - bias design
  16. Monoblock project
  17. Series DC Heater chain
  18. Tranformer advice for small powered amp.
  19. Circuit for testing tube/valve - Help!
  20. new Tubes for MHZS 33
  21. Teeny Tiny Spud
  22. Paging Andy Bartha
  23. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  24. aikido octal all-in-one manual
  25. Conrad Johnson MV75 help needed
  26. Leak tl12+ ECC81
  27. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  28. Amperex AX569
  29. Marconi tube ID help
  30. ST-70 Input Stage, Explained For Extreme Beginners
  31. heaters connected to cathode?!
  32. HK Citation I rebuild question.
  33. tube 4-125A design
  34. Mod FISHER 100AZ-balanced input!?
  35. Akidio PS-17 CLC Resistance Value Choices
  36. More questions on parallel push-pull
  37. Inputs needed for Power Transformer Design!
  38. seeking advice about Welborne Labs kit
  39. 2A3 Design: Real World Gain Question
  40. 6M11 push-pull spud amp
  41. My first Console mod - Class is in session
  42. Wright Sound WPA 3.5 Power Transformer Replacement Options
  43. DF 96 tube
  44. S.A.C.T valve transformers
  45. Very strange....
  46. Advice Needed on PSU Over voltage
  47. Griffin G170 schematic needed
  48. Funny comment about the religion of SE
  49. calculate needed wattage for output transformer
  50. AP1 tube preamp assistance needed,please?
  51. 6AN8 or ECF80 ?
  52. Simple Cheap Amp Using 6l6 and/or 12ax7?
  53. Which Tube Amp Kit Sounds Best
  54. Push Pull 6HJ5 Monoblocks
  55. 100 V transformers
  56. unstable right channel
  57. Aikido 9 pin tubes for 2a3
  58. preamp kit
  59. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  60. Build ideas? New tube amp find and I'd like some input please.
  61. OB2 SPICE model
  62. Push pull - driver tube plate voltage
  63. Voltage Doubler Caps
  64. Morgan Jones Regulator - Questions
  65. Gu-50 SE Amp , quick question...
  66. Tube Amp Open Circuit Protection
  67. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  68. je labs type 76 preamp build!
  69. Any Tube Designers Out There: Money For You
  70. Output Transformer Questions
  71. cathode bias redplate question
  72. eyelets and radial capacitors
  73. Help with MiniBlok II
  74. Reading Sovtek Date Codes
  75. ECF or PCF80 as a headphone amp
  76. 60 Watt Mono Build
  77. Amp for Klipsch Heresy
  78. The ultimate 300B
  79. Stage gain and cascading
  80. NOS Tube Socket Question
  81. 75 Watt/Channel Monoblock Custom Amp
  82. Wiring variac
  83. 1SH29B russian miniature tube - useful for audio?
  84. Humming in PP EL84 Tubes aMP.
  85. Repurposing a Tube Reel to Reel
  86. YaQin MC-10L Vs ST70: Sound Quality
  87. Voltage VS. Amperage?
  88. 3 questions about 6B4g
  89. DIY OPT - are these good?
  90. Audio Research regulators
  91. 0C3 for lowering down the screens?
  92. radio like interference condition in SA-100
  93. PCL86 heater flash
  94. Tube powered subwoofer
  95. Anyone have experience with Shuguang 805A
  96. The emperor's new amplifier
  97. Power supply question:twin choke input?
  98. El-84 vs El-86
  99. Modifying Tektronix Type-E Plugin
  100. radio coming thru speakers.
  101. FM tube tuner
  102. diy el 34 se
  103. Transformers Specs for a 2x KT88 Amp
  104. 805 Positive or Negative Grid
  105. Point To Point, 100 percent, No Kit
  106. More line loads etc
  107. B300 C120 rectifier replacement.
  108. Triode simulation/emulation with solid state
  109. What is the driver circuit here?
  110. Dynaco Mark III
  111. ReCap- Heathkit AA-151 Help
  112. Hammond Chassis?
  113. How about an IXCP10M90 as a FETRON
  114. PUSH PULL SE ???
  115. More load lines...
  116. 7193/2C22: wich brand's the best?
  117. Bumed out over this Setchell Carlson
  118. Looking for Electron flow diagram
  119. Why Only Automatic/Semi-Automatic Bias?
  120. Audio Note M-Zero preamp
  121. Load lines. What?
  122. Preamp - pop on channel change
  123. Just for interest.
  124. 813 push-pull output 250W tube amp
  125. What sort of resistors are fine to use in tube amps?
  126. How Not To Pack DHTs For Postal Shipment
  127. Help me ID this trafo and tubes..
  128. Full PSE Amp /only 6E5P/
  129. ATH90
  130. Corroded valve pins
  131. Power supply advice needed
  132. Big Capacitors in PSU
  133. 6CD6G Tube amp
  134. Removal of Cathode Follower in JE Labs Circuit
  135. Q: Cascaded Transformers, S&B102+LL7903
  136. Threshold dac 1e possible modd
  137. Need Help with PSVANE 6CA7-T
  138. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  139. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  140. Recommendations & Budget for DIY Tube Amp kit?
  141. Recommend a good plate choke for 5842 tube
  142. Recomendations for SE 6AQ5 Schematics?
  143. ST35 Phase Splitter
  144. german console pull recap Project - help needed
  145. 6B4G Monkey help
  146. These transformers can be used for EL84 SE?
  147. 300B...Ebay or DIY??
  148. Higher gain twin triode!
  149. ARC V70 bias
  150. 70v transformers explored.
  151. Are these caps stuffed ?
  152. Anyone recognizes this amp ?
  153. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  154. My tube differential amplifier
  155. Helping a friend build a tube headphone amp.
  156. Tango XE-20S, tube option
  157. -follower with mosfet... how stable ?
  158. 5k or 2.5k for 6s45p
  159. minor hum problem
  160. Help to choose budget Tube Amp....
  161. Vao
  162. Help with tube-rolling 300b Ming-Da amp?
  163. EF184 pins 1 and 3
  164. aikido pre (5687 all in one) HUMM!!
  165. Question about tube datasheets
  166. EL84 "typical" amplifier
  167. Packing heat.
  168. Current rating for power transformer.
  169. Pentode Odd Behavior
  170. Lower Screen Voltage KT88, choke input + Cap input supply
  171. tannoy line trans
  172. Hi Gain Inverter for a PP amp
  173. Help looking for a project
  174. Dynaco MkIII bias flutter/stability...
  175. grid leak resistor?
  176. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  177. Fisher 800-C blown fuse
  178. cathode bias imbalance
  179. DIY M60 OTL Power Amplifiers
  180. Invisible gain...Aikido content
  181. Vacuum Tube SPICE Models
  182. Tamura interstages
  183. Jolida 502/302b power transformer.
  184. Bogen mo-200
  185. Phono Circuit Noise Factor
  186. Input impedance of this headphone amplifier ?
  187. D3a preamp.
  188. Newbie needs advice about DIY project please!
  189. PSUD and Off load Voltage
  190. Groovewatt-Valve RIAA Phono Preamp?
  191. Mullard EL84 Reissue?
  192. Push Pull amp power supply question
  193. Aikido all in one 5687 tube pre / louder in right Channel
  194. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  195. Tube Amp
  196. Preamp Pentode Screen Voltage and Gain
  197. AUDIBLE iLLUSION m3A
  198. What "Class" amp is this?
  199. DC coupling
  200. DuKane 1A831
  201. Thump sound at turn off of a power amp
  202. DHT AC heating 120hz phase canceling
  203. REVOX Model 40 amp. Need some hand holding please.
  204. heater imbalance fixable?
  205. Headphone amp
  206. Speech Amp for Modulator
  207. 2.1 channel el84 amp help
  208. Identify PC board in little amp...
  209. Spice model for GU50 (LT-Spice)
  210. Need schematic of Preamplifier AM 1065
  211. My Journey to build Tube power amplifier B300 SE
  212. Kondo M77
  213. tube datasheet gm
  214. xiang sheng best valves
  215. 6CN6/EL38 Replacement
  216. 4P55
  217. Possible or way to complicated?
  218. Jeff korneff SET 45
  219. P2p layout
  220. Heating tubes off mains voltage
  221. EL84 as preamp tube?
  222. Claus Byrith 4-30 PP with KT66
  223. biasing confusion
  224. Bogen HE-10 question
  225. Golden Tube Audio SE-100
  226. Nearing Conclusion of Line/Phono Project
  227. Bias Supply For Citation V?
  228. Tube Integrated Amp
  229. Help needed about a quad FM2 RF
  230. 21jv6 tube datasheet
  231. Interstage transformer theoretical phase change?
  232. Bootstrapping a high pass filter
  233. Help with hybrid Aikido amp! Suggestions please
  234. Need help with a Curcio Daniel 1
  235. Audio Tubes used in Industrial equipment?
  236. Hammond H1 Amp
  237. CCS assisted small signal UL pentode
  238. Dynaco ST35 B+
  239. Simple Tube Amp
  240. Portable tube amplifier
  241. Using the heater supply to get a DC source
  242. phono/aux switching problem
  243. What is the best EF86 in production at the moment
  244. 12AX7 / 12AT7 Mu Follower Phono
  245. Kreisler Stereo 6 speaker impedance
  246. A serviceable life.....
  247. TV 7 DU Tube info
  248. Twinings Tea Transformer Covers
  249. ECC88 with 12V heaters
  250. CXhange opa 627ap for an audio gd moon ?

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