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  1. Looking for Electron flow diagram
  2. Why Only Automatic/Semi-Automatic Bias?
  3. Audio Note M-Zero preamp
  4. Load lines. What?
  5. Preamp - pop on channel change
  6. Just for interest.
  7. 813 push-pull output 250W tube amp
  8. What sort of resistors are fine to use in tube amps?
  9. How Not To Pack DHTs For Postal Shipment
  10. Help me ID this trafo and tubes..
  11. Full PSE Amp /only 6E5P/
  12. ATH90
  13. Corroded valve pins
  14. Power supply advice needed
  15. Big Capacitors in PSU
  16. 6CD6G Tube amp
  17. Removal of Cathode Follower in JE Labs Circuit
  18. Q: Cascaded Transformers, S&B102+LL7903
  19. Threshold dac 1e possible modd
  20. Need Help with PSVANE 6CA7-T
  21. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  22. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  23. Recommendations & Budget for DIY Tube Amp kit?
  24. Recommend a good plate choke for 5842 tube
  25. Recomendations for SE 6AQ5 Schematics?
  26. ST35 Phase Splitter
  27. german console pull recap Project - help needed
  28. 6B4G Monkey help
  29. These transformers can be used for EL84 SE?
  30. 300B...Ebay or DIY??
  31. Higher gain twin triode!
  32. ARC V70 bias
  33. 70v transformers explored.
  34. Are these caps stuffed ?
  35. Anyone recognizes this amp ?
  36. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  37. My tube differential amplifier
  38. Helping a friend build a tube headphone amp.
  39. Tango XE-20S, tube option
  40. -follower with mosfet... how stable ?
  41. 5k or 2.5k for 6s45p
  42. minor hum problem
  43. Help to choose budget Tube Amp....
  44. Vao
  45. Help with tube-rolling 300b Ming-Da amp?
  46. EF184 pins 1 and 3
  47. aikido pre (5687 all in one) HUMM!!
  48. Question about tube datasheets
  49. EL84 "typical" amplifier
  50. Packing heat.
  51. Current rating for power transformer.
  52. Pentode Odd Behavior
  53. Lower Screen Voltage KT88, choke input + Cap input supply
  54. tannoy line trans
  55. Hi Gain Inverter for a PP amp
  56. Help looking for a project
  57. Dynaco MkIII bias flutter/stability...
  58. grid leak resistor?
  59. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  60. Fisher 800-C blown fuse
  61. testing 300B on Hickok 539B/C
  62. cathode bias imbalance
  63. DIY M60 OTL Power Amplifiers
  64. Invisible gain...Aikido content
  65. Vacuum Tube Spice Models
  66. Tamura interstages
  67. Jolida 502/302b power transformer.
  68. Anyone used high voltage MKP1848 caps
  69. Bogen mo-200
  70. Phono Circuit Noise Factor
  71. Input impedance of this headphone amplifier ?
  72. D3a preamp.
  73. Newbie needs advice about DIY project please!
  74. PSUD and Off load Voltage
  75. Help! AVO CT-160 Meltdown
  76. Groovewatt-Valve RIAA Phono Preamp?
  77. Mullard EL84 Reissue?
  78. Push Pull amp power supply question
  79. Aikido all in one 5687 tube pre / louder in right Channel
  80. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  81. Tube Amp
  82. Preamp Pentode Screen Voltage and Gain
  83. AUDIBLE iLLUSION m3A
  84. What "Class" amp is this?
  85. DC coupling
  86. DuKane 1A831
  87. Thump sound at turn off of a power amp
  88. DHT AC heating 120hz phase canceling
  89. REVOX Model 40 amp. Need some hand holding please.
  90. heater imbalance fixable?
  91. Headphone amp
  92. Speech Amp for Modulator
  93. 2.1 channel el84 amp help
  94. Identify PC board in little amp...
  95. dcpp vs sse vs spp? First build
  96. Spice model for GU50 (LT-Spice)
  97. Need schematic of Preamplifier AM 1065
  98. My Journey to build Tube power amplifier B300 SE
  99. Kondo M77
  100. tube datasheet gm
  101. xiang sheng best valves
  102. 6CN6/EL38 Replacement
  103. 4P55
  104. Possible or way to complicated?
  105. Jeff korneff SET 45
  106. Hickok 536 Calibration Procedure?
  107. P2p layout
  108. Heating tubes off mains voltage
  109. EL84 as preamp tube?
  110. Claus Byrith 4-30 PP with KT66
  111. biasing confusion
  112. Bogen HE-10 question
  113. Golden Tube Audio SE-100
  114. Nearing Conclusion of Line/Phono Project
  115. Bias Supply For Citation V?
  116. Tube Integrated Amp
  117. Help needed about a quad FM2 RF
  118. 21jv6 tube datasheet
  119. Interstage transformer theoretical phase change?
  120. Bootstrapping a high pass filter
  121. Help with hybrid Aikido amp! Suggestions please
  122. Need help with a Curcio Daniel 1
  123. Audio Tubes used in Industrial equipment?
  124. Hammond H1 Amp
  125. CCS assisted small signal UL pentode
  126. Vox AC50 output transformer rewind
  127. Dynaco ST35 B+
  128. Simple Tube Amp
  129. Portable tube amplifier
  130. Using the heater supply to get a DC source
  131. phono/aux switching problem
  132. What is the best EF86 in production at the moment
  133. 12AX7 / 12AT7 Mu Follower Phono
  134. Kreisler Stereo 6 speaker impedance
  135. A serviceable life.....
  136. TV 7 DU Tube info
  137. Twinings Tea Transformer Covers
  138. ECC88 with 12V heaters
  139. CXhange opa 627ap for an audio gd moon ?
  140. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  141. fatman itube mk1 sounds bad
  142. Chinese FD-71 tube is the russian GK-71 ?
  143. Leak stereo 20 diagnosis
  144. VTL
  145. Looking for tubed MC pre-pre
  146. Correct wiring types
  147. Couplates
  148. Op-Amp Like Line Preamp
  149. SE GU-50/6CB6 Pentode Design
  150. Pioneer SX34
  151. About metal film resistor in a tube tuner
  152. Looking for 52dBs or more MM phono
  153. Winter is coming... Time to start GM70 SE parafeed amp
  154. Doug Self: Wireless World Magazine Article Archive
  155. Relay short circuit
  156. EL34 PP oscillating
  157. Dynaco switchable diode/tube rec and driver tube mode
  158. CCS into a VR with Interstage question
  159. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  160. Rectifier and DC filtering relationship question
  161. Class A2 6JD5 Curves
  162. Motorola HS-839 Amp problem
  163. Active valve monitors?
  164. Did I get this load calculation right?
  165. Convergent SL1 original schematic
  166. Bleed down resistor
  167. How do I calculate resistor value in this schematic?
  168. Easy question about tube data sheet
  169. Tube regulator question
  170. Tube amp build for an 1st timer.
  171. Full music 101d input tube/valve
  172. EZ80 Voltage Question
  173. What the heck is this? Bulb?
  174. Audio Note Kit 1 Upgrade
  175. Will this work? (EL34 PP)
  176. Anthem 1 intergrated amp
  177. Tubes and the sun?
  178. Two triodes cascaded cathode follower?
  179. HIRAGA PREAMP PHONO + line
  180. OB2WA Radioactive???
  181. 9 pin tube socket pcb boards with screw terminals
  182. Hai I need a little help on designing a power supply
  183. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  184. Cleaning Up the Noise + Selector Switch Anomalie
  185. first tube preamp
  186. Rescuing a vessel : 1964 HICKOK 539C tube tester
  187. Dynaco Feedback
  188. Mundorf Silver Oil in hot 300B tube amplifier !!
  189. MULLARD 5-20 build with mods
  190. Choke loaded driver with small opt?
  191. Preamp Tube Bias and feedback
  192. Capacitor replacement option
  193. New EL84 SE Amp PCB: The u-SE
  194. Question about Amp Theory
  195. Help needed for modifying DAC-opamp-tube circuit
  196. best way to start with tube amps
  197. Damper diode between C1 and L1
  198. Question about 'near' zero volt bias for low level stages
  199. Filmosound 179 - Should I even bother?
  200. Newbie question
  201. I think I know how it works, but can I get some help? (OddWatt PP)
  202. kt150
  203. As anyone considered black oxide???
  204. OTL question
  205. Headphone amp/preamp project.
  206. Comments or suggestions on this schematic?
  207. Twin Conn Organ 7868 Rebuild
  208. Favorite PP 6550 schematic?
  209. DECWARE Z BOX SCHEMATIC
  210. 6V6
  211. Need suggestion for eliminating noise from aluminum cover
  212. Kuba Serenade Stereo Console question.
  213. Help with tube interchangeability
  214. 6sn7(12au7)-6v6-300b
  215. Westinghouse tube amp MODEL V2508, conversion
  216. Voltage on the chassis, bad xformer?
  217. TubeCad blues...
  218. OPT as PSU filter???
  219. Tube Plate Voltage Timing
  220. Transformer grounding
  221. Two questions concerning bleed resistors
  222. Choke ratings and resistor values in choke input supply?
  223. Novar Spud :: A $200 sweep tube Spud with PCB
  224. Mid 50s 250/500/1000W Valve amp needs some repairs......
  225. I want to learn tubes and set up a workstation
  226. Pre amp wire up__new
  227. allied knight / rauland borg schematic needed
  228. Rollable Tubes
  229. n00b - Leave out the LEDs??
  230. Aikido 5687 all in one kit
  231. 6P13S - WHAT TO DO WITH
  232. el84 set amp for 90db-8ohm speaker?
  233. My first cap coupled 2 stage
  234. Dodd Buffer Tube Rolling?
  235. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  236. Olson-Morgan 6F6 Amplifier Info's needed.
  237. Newbie, Help with datasheet
  238. Conrad Johnson MV55 again - and Hi from a newb
  239. Interesting one piece EL34 PP tube amp diy pcb on ebay
  240. Low power stereo (dual mono) tube headphone amp
  241. 6EJ7's vs. 6JC6A
  242. EL34s Frying in my Cayin A50-T
  243. Grid Leak Amplifier with Unexpected Heater Resistor
  244. 7617 tube data
  245. preamplifier with huge amplification
  246. Counterpoint Amp Output
  247. Phase inverter Gremlins in Philips EL6431 amp
  248. Russian to English Translation needed
  249. Concertina type Phase inverters?
  250. Double C-Core output transformers

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