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  1. 845 IT couple amp
  2. What makes an output tube "run away"
  3. P. Millett Engineers Amplifier
  4. Biasing problem
  5. Direct coupled driver stage - bias design
  6. Monoblock project
  7. Series DC Heater chain
  8. Tranformer advice for small powered amp.
  9. Circuit for testing tube/valve - Help!
  10. new Tubes for MHZS 33
  11. Teeny Tiny Spud
  12. Paging Andy Bartha
  13. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  14. aikido octal all-in-one manual
  15. Conrad Johnson MV75 help needed
  16. Leak tl12+ ECC81
  17. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  18. Amperex AX569
  19. Marconi tube ID help
  20. ST-70 Input Stage, Explained For Extreme Beginners
  21. heaters connected to cathode?!
  22. HK Citation I rebuild question.
  23. tube 4-125A design
  24. Mod FISHER 100AZ-balanced input!?
  25. Akidio PS-17 CLC Resistance Value Choices
  26. More questions on parallel push-pull
  27. Inputs needed for Power Transformer Design!
  28. seeking advice about Welborne Labs kit
  29. 2A3 Design: Real World Gain Question
  30. 6M11 push-pull spud amp
  31. My first Console mod - Class is in session
  32. Wright Sound WPA 3.5 Power Transformer Replacement Options
  33. DF 96 tube
  34. S.A.C.T valve transformers
  35. Very strange....
  36. Advice Needed on PSU Over voltage
  37. Griffin G170 schematic needed
  38. Funny comment about the religion of SE
  39. calculate needed wattage for output transformer
  40. AP1 tube preamp assistance needed,please?
  41. 6AN8 or ECF80 ?
  42. Simple Cheap Amp Using 6l6 and/or 12ax7?
  43. Which Tube Amp Kit Sounds Best
  44. Push Pull 6HJ5 Monoblocks
  45. 100 V transformers
  46. unstable right channel
  47. Aikido 9 pin tubes for 2a3
  48. preamp kit
  49. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  50. Build ideas? New tube amp find and I'd like some input please.
  51. OB2 SPICE model
  52. Push pull - driver tube plate voltage
  53. Voltage Doubler Caps
  54. Morgan Jones Regulator - Questions
  55. Gu-50 SE Amp , quick question...
  56. Tube Amp Open Circuit Protection
  57. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  58. je labs type 76 preamp build!
  59. Any Tube Designers Out There: Money For You
  60. Output Transformer Questions
  61. cathode bias redplate question
  62. eyelets and radial capacitors
  63. Help with MiniBlok II
  64. Reading Sovtek Date Codes
  65. ECF or PCF80 as a headphone amp
  66. 60 Watt Mono Build
  67. Amp for Klipsch Heresy
  68. The ultimate 300B
  69. Stage gain and cascading
  70. NOS Tube Socket Question
  71. 75 Watt/Channel Monoblock Custom Amp
  72. Wiring variac
  73. 1SH29B russian miniature tube - useful for audio?
  74. Humming in PP EL84 Tubes aMP.
  75. Repurposing a Tube Reel to Reel
  76. YaQin MC-10L Vs ST70: Sound Quality
  77. Voltage VS. Amperage?
  78. 3 questions about 6B4g
  79. DIY OPT - are these good?
  80. Audio Research regulators
  81. 0C3 for lowering down the screens?
  82. radio like interference condition in SA-100
  83. PCL86 heater flash
  84. Tube powered subwoofer
  85. Anyone have experience with Shuguang 805A
  86. The emperor's new amplifier
  87. Power supply question:twin choke input?
  88. El-84 vs El-86
  89. Modifying Tektronix Type-E Plugin
  90. radio coming thru speakers.
  91. FM tube tuner
  92. diy el 34 se
  93. Transformers Specs for a 2x KT88 Amp
  94. 805 Positive or Negative Grid
  95. Point To Point, 100 percent, No Kit
  96. More line loads etc
  97. B300 C120 rectifier replacement.
  98. Triode simulation/emulation with solid state
  99. What is the driver circuit here?
  100. Dynaco Mark III
  101. ReCap- Heathkit AA-151 Help
  102. Hammond Chassis?
  103. How about an IXCP10M90 as a FETRON
  104. PUSH PULL SE ???
  105. More load lines...
  106. 7193/2C22: wich brand's the best?
  107. Bumed out over this Setchell Carlson
  108. Looking for Electron flow diagram
  109. Why Only Automatic/Semi-Automatic Bias?
  110. Audio Note M-Zero preamp
  111. Load lines. What?
  112. Preamp - pop on channel change
  113. Just for interest.
  114. 813 push-pull output 250W tube amp
  115. What sort of resistors are fine to use in tube amps?
  116. How Not To Pack DHTs For Postal Shipment
  117. Help me ID this trafo and tubes..
  118. Full PSE Amp /only 6E5P/
  119. ATH90
  120. Corroded valve pins
  121. Power supply advice needed
  122. Big Capacitors in PSU
  123. 6CD6G Tube amp
  124. Removal of Cathode Follower in JE Labs Circuit
  125. Q: Cascaded Transformers, S&B102+LL7903
  126. Threshold dac 1e possible modd
  127. Need Help with PSVANE 6CA7-T
  128. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  129. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  130. Recommendations & Budget for DIY Tube Amp kit?
  131. Recommend a good plate choke for 5842 tube
  132. Recomendations for SE 6AQ5 Schematics?
  133. ST35 Phase Splitter
  134. german console pull recap Project - help needed
  135. 6B4G Monkey help
  136. These transformers can be used for EL84 SE?
  137. 300B...Ebay or DIY??
  138. Higher gain twin triode!
  139. ARC V70 bias
  140. 70v transformers explored.
  141. Are these caps stuffed ?
  142. Anyone recognizes this amp ?
  143. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  144. My tube differential amplifier
  145. Helping a friend build a tube headphone amp.
  146. Tango XE-20S, tube option
  147. -follower with mosfet... how stable ?
  148. 5k or 2.5k for 6s45p
  149. minor hum problem
  150. Help to choose budget Tube Amp....
  151. Vao
  152. Help with tube-rolling 300b Ming-Da amp?
  153. EF184 pins 1 and 3
  154. aikido pre (5687 all in one) HUMM!!
  155. Question about tube datasheets
  156. EL84 "typical" amplifier
  157. Packing heat.
  158. Current rating for power transformer.
  159. Pentode Odd Behavior
  160. Lower Screen Voltage KT88, choke input + Cap input supply
  161. tannoy line trans
  162. Hi Gain Inverter for a PP amp
  163. Help looking for a project
  164. Dynaco MkIII bias flutter/stability...
  165. grid leak resistor?
  166. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  167. Fisher 800-C blown fuse
  168. testing 300B on Hickok 539B/C
  169. cathode bias imbalance
  170. DIY M60 OTL Power Amplifiers
  171. Invisible gain...Aikido content
  172. Vacuum Tube SPICE Models
  173. Tamura interstages
  174. Jolida 502/302b power transformer.
  175. Anyone used high voltage MKP1848 caps
  176. Bogen mo-200
  177. Phono Circuit Noise Factor
  178. Input impedance of this headphone amplifier ?
  179. D3a preamp.
  180. Newbie needs advice about DIY project please!
  181. PSUD and Off load Voltage
  182. Help! AVO CT-160 Meltdown
  183. Groovewatt-Valve RIAA Phono Preamp?
  184. Mullard EL84 Reissue?
  185. Push Pull amp power supply question
  186. Aikido all in one 5687 tube pre / louder in right Channel
  187. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  188. Tube Amp
  189. Preamp Pentode Screen Voltage and Gain
  190. AUDIBLE iLLUSION m3A
  191. What "Class" amp is this?
  192. DC coupling
  193. DuKane 1A831
  194. Thump sound at turn off of a power amp
  195. DHT AC heating 120hz phase canceling
  196. REVOX Model 40 amp. Need some hand holding please.
  197. heater imbalance fixable?
  198. Headphone amp
  199. Speech Amp for Modulator
  200. 2.1 channel el84 amp help
  201. Identify PC board in little amp...
  202. dcpp vs sse vs spp? First build
  203. Spice model for GU50 (LT-Spice)
  204. Need schematic of Preamplifier AM 1065
  205. My Journey to build Tube power amplifier B300 SE
  206. Kondo M77
  207. tube datasheet gm
  208. xiang sheng best valves
  209. 6CN6/EL38 Replacement
  210. 4P55
  211. Possible or way to complicated?
  212. Jeff korneff SET 45
  213. Hickok 536 Calibration Procedure?
  214. P2p layout
  215. Heating tubes off mains voltage
  216. EL84 as preamp tube?
  217. Claus Byrith 4-30 PP with KT66
  218. biasing confusion
  219. Bogen HE-10 question
  220. Golden Tube Audio SE-100
  221. Nearing Conclusion of Line/Phono Project
  222. Bias Supply For Citation V?
  223. Tube Integrated Amp
  224. Help needed about a quad FM2 RF
  225. 21jv6 tube datasheet
  226. Interstage transformer theoretical phase change?
  227. Bootstrapping a high pass filter
  228. Help with hybrid Aikido amp! Suggestions please
  229. Need help with a Curcio Daniel 1
  230. Audio Tubes used in Industrial equipment?
  231. Hammond H1 Amp
  232. CCS assisted small signal UL pentode
  233. Dynaco ST35 B+
  234. Simple Tube Amp
  235. Portable tube amplifier
  236. Using the heater supply to get a DC source
  237. phono/aux switching problem
  238. What is the best EF86 in production at the moment
  239. 12AX7 / 12AT7 Mu Follower Phono
  240. Kreisler Stereo 6 speaker impedance
  241. A serviceable life.....
  242. TV 7 DU Tube info
  243. Twinings Tea Transformer Covers
  244. ECC88 with 12V heaters
  245. CXhange opa 627ap for an audio gd moon ?
  246. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  247. fatman itube mk1 sounds bad
  248. Chinese FD-71 tube is the russian GK-71 ?
  249. Leak stereo 20 diagnosis
  250. VTL

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