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  1. eyelets and radial capacitors
  2. Help with MiniBlok II
  3. Reading Sovtek Date Codes
  4. ECF or PCF80 as a headphone amp
  5. 60 Watt Mono Build
  6. Amp for Klipsch Heresy
  7. The ultimate 300B
  8. Stage gain and cascading
  9. NOS Tube Socket Question
  10. 75 Watt/Channel Monoblock Custom Amp
  11. Wiring variac
  12. 1SH29B russian miniature tube - useful for audio?
  13. Humming in PP EL84 Tubes aMP.
  14. Repurposing a Tube Reel to Reel
  15. YaQin MC-10L Vs ST70: Sound Quality
  16. Voltage VS. Amperage?
  17. 3 questions about 6B4g
  18. DIY OPT - are these good?
  19. Audio Research regulators
  20. 0C3 for lowering down the screens?
  21. radio like interference condition in SA-100
  22. PCL86 heater flash
  23. Tube powered subwoofer
  24. Anyone have experience with Shuguang 805A
  25. The emperor's new amplifier
  26. Power supply question:twin choke input?
  27. El-84 vs El-86
  28. Modifying Tektronix Type-E Plugin
  29. radio coming thru speakers.
  30. FM tube tuner
  31. diy el 34 se
  32. Transformers Specs for a 2x KT88 Amp
  33. 805 Positive or Negative Grid
  34. Point To Point, 100 percent, No Kit
  35. More line loads etc
  36. B300 C120 rectifier replacement.
  37. Triode simulation/emulation with solid state
  38. What is the driver circuit here?
  39. Dynaco Mark III
  40. ReCap- Heathkit AA-151 Help
  41. Hammond Chassis?
  42. How about an IXCP10M90 as a FETRON
  43. PUSH PULL SE ???
  44. More load lines...
  45. 7193/2C22: wich brand's the best?
  46. Bumed out over this Setchell Carlson
  47. Looking for Electron flow diagram
  48. Why Only Automatic/Semi-Automatic Bias?
  49. Audio Note M-Zero preamp
  50. Load lines. What?
  51. Preamp - pop on channel change
  52. Just for interest.
  53. 813 push-pull output 250W tube amp
  54. What sort of resistors are fine to use in tube amps?
  55. How Not To Pack DHTs For Postal Shipment
  56. Help me ID this trafo and tubes..
  57. Full PSE Amp /only 6E5P/
  58. ATH90
  59. Corroded valve pins
  60. Power supply advice needed
  61. Big Capacitors in PSU
  62. 6CD6G Tube amp
  63. Removal of Cathode Follower in JE Labs Circuit
  64. Q: Cascaded Transformers, S&B102+LL7903
  65. Threshold dac 1e possible modd
  66. Need Help with PSVANE 6CA7-T
  67. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  68. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  69. Recommendations & Budget for DIY Tube Amp kit?
  70. Recommend a good plate choke for 5842 tube
  71. Recomendations for SE 6AQ5 Schematics?
  72. ST35 Phase Splitter
  73. german console pull recap Project - help needed
  74. 6B4G Monkey help
  75. These transformers can be used for EL84 SE?
  76. 300B...Ebay or DIY??
  77. Higher gain twin triode!
  78. ARC V70 bias
  79. 70v transformers explored.
  80. Are these caps stuffed ?
  81. Anyone recognizes this amp ?
  82. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  83. My tube differential amplifier
  84. Helping a friend build a tube headphone amp.
  85. Tango XE-20S, tube option
  86. -follower with mosfet... how stable ?
  87. 5k or 2.5k for 6s45p
  88. minor hum problem
  89. Help to choose budget Tube Amp....
  90. Vao
  91. Help with tube-rolling 300b Ming-Da amp?
  92. EF184 pins 1 and 3
  93. aikido pre (5687 all in one) HUMM!!
  94. Question about tube datasheets
  95. EL84 "typical" amplifier
  96. Packing heat.
  97. Current rating for power transformer.
  98. Pentode Odd Behavior
  99. Lower Screen Voltage KT88, choke input + Cap input supply
  100. tannoy line trans
  101. Hi Gain Inverter for a PP amp
  102. Help looking for a project
  103. Dynaco MkIII bias flutter/stability...
  104. grid leak resistor?
  105. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  106. Fisher 800-C blown fuse
  107. testing 300B on Hickok 539B/C
  108. cathode bias imbalance
  109. DIY M60 OTL Power Amplifiers
  110. Invisible gain...Aikido content
  111. Vacuum Tube SPICE Models
  112. Tamura interstages
  113. Jolida 502/302b power transformer.
  114. Anyone used high voltage MKP1848 caps
  115. Bogen mo-200
  116. Phono Circuit Noise Factor
  117. Input impedance of this headphone amplifier ?
  118. D3a preamp.
  119. Newbie needs advice about DIY project please!
  120. PSUD and Off load Voltage
  121. Help! AVO CT-160 Meltdown
  122. Groovewatt-Valve RIAA Phono Preamp?
  123. Mullard EL84 Reissue?
  124. Push Pull amp power supply question
  125. Aikido all in one 5687 tube pre / louder in right Channel
  126. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  127. Tube Amp
  128. Preamp Pentode Screen Voltage and Gain
  129. AUDIBLE iLLUSION m3A
  130. What "Class" amp is this?
  131. DC coupling
  132. DuKane 1A831
  133. Thump sound at turn off of a power amp
  134. DHT AC heating 120hz phase canceling
  135. REVOX Model 40 amp. Need some hand holding please.
  136. heater imbalance fixable?
  137. Headphone amp
  138. Speech Amp for Modulator
  139. 2.1 channel el84 amp help
  140. Identify PC board in little amp...
  141. dcpp vs sse vs spp? First build
  142. Spice model for GU50 (LT-Spice)
  143. Need schematic of Preamplifier AM 1065
  144. My Journey to build Tube power amplifier B300 SE
  145. Kondo M77
  146. tube datasheet gm
  147. xiang sheng best valves
  148. 6CN6/EL38 Replacement
  149. 4P55
  150. Possible or way to complicated?
  151. Jeff korneff SET 45
  152. Hickok 536 Calibration Procedure?
  153. P2p layout
  154. Heating tubes off mains voltage
  155. EL84 as preamp tube?
  156. Claus Byrith 4-30 PP with KT66
  157. biasing confusion
  158. Bogen HE-10 question
  159. Golden Tube Audio SE-100
  160. Nearing Conclusion of Line/Phono Project
  161. Bias Supply For Citation V?
  162. Tube Integrated Amp
  163. Help needed about a quad FM2 RF
  164. 21jv6 tube datasheet
  165. Interstage transformer theoretical phase change?
  166. Bootstrapping a high pass filter
  167. Help with hybrid Aikido amp! Suggestions please
  168. Need help with a Curcio Daniel 1
  169. Audio Tubes used in Industrial equipment?
  170. Hammond H1 Amp
  171. CCS assisted small signal UL pentode
  172. Vox AC50 output transformer rewind
  173. Dynaco ST35 B+
  174. Simple Tube Amp
  175. Portable tube amplifier
  176. Using the heater supply to get a DC source
  177. phono/aux switching problem
  178. What is the best EF86 in production at the moment
  179. 12AX7 / 12AT7 Mu Follower Phono
  180. Kreisler Stereo 6 speaker impedance
  181. A serviceable life.....
  182. TV 7 DU Tube info
  183. Twinings Tea Transformer Covers
  184. ECC88 with 12V heaters
  185. CXhange opa 627ap for an audio gd moon ?
  186. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  187. fatman itube mk1 sounds bad
  188. Chinese FD-71 tube is the russian GK-71 ?
  189. Leak stereo 20 diagnosis
  190. VTL
  191. Looking for tubed MC pre-pre
  192. Correct wiring types
  193. Couplates
  194. Op-Amp Like Line Preamp
  195. SE GU-50/6CB6 Pentode Design
  196. Pioneer SX34
  197. About metal film resistor in a tube tuner
  198. Looking for 52dBs or more MM phono
  199. Winter is coming... Time to start GM70 SE parafeed amp
  200. Doug Self: Wireless World Magazine Article Archive
  201. Relay short circuit
  202. EL34 PP oscillating
  203. Dynaco switchable diode/tube rec and driver tube mode
  204. CCS into a VR with Interstage question
  205. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  206. Rectifier and DC filtering relationship question
  207. Class A2 6JD5 Curves
  208. Motorola HS-839 Amp problem
  209. Active valve monitors?
  210. Did I get this load calculation right?
  211. Convergent SL1 original schematic
  212. Bleed down resistor
  213. How do I calculate resistor value in this schematic?
  214. Easy question about tube data sheet
  215. Tube regulator question
  216. Tube amp build for an 1st timer.
  217. Full music 101d input tube/valve
  218. EZ80 Voltage Question
  219. What the heck is this? Bulb?
  220. Audio Note Kit 1 Upgrade
  221. Will this work? (EL34 PP)
  222. Anthem 1 intergrated amp
  223. Tubes and the sun?
  224. Two triodes cascaded cathode follower?
  225. HIRAGA PREAMP PHONO + line
  226. OB2WA Radioactive???
  227. 9 pin tube socket pcb boards with screw terminals
  228. Hai I need a little help on designing a power supply
  229. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  230. Cleaning Up the Noise + Selector Switch Anomalie
  231. first tube preamp
  232. Rescuing a vessel : 1964 HICKOK 539C tube tester
  233. Dynaco Feedback
  234. Mundorf Silver Oil in hot 300B tube amplifier !!
  235. MULLARD 5-20 build with mods
  236. Choke loaded driver with small opt?
  237. Preamp Tube Bias and feedback
  238. Capacitor replacement option
  239. New EL84 SE Amp PCB: The u-SE
  240. Question about Amp Theory
  241. Help needed for modifying DAC-opamp-tube circuit
  242. best way to start with tube amps
  243. Damper diode between C1 and L1
  244. Question about 'near' zero volt bias for low level stages
  245. Filmosound 179 - Should I even bother?
  246. Newbie question
  247. I think I know how it works, but can I get some help? (OddWatt PP)
  248. kt150
  249. As anyone considered black oxide???
  250. OTL question

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