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  1. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  2. Build ideas? New tube amp find and I'd like some input please.
  3. OB2 SPICE model
  4. Push pull - driver tube plate voltage
  5. Voltage Doubler Caps
  6. Morgan Jones Regulator - Questions
  7. Gu-50 SE Amp , quick question...
  8. Tube Amp Open Circuit Protection
  9. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  10. je labs type 76 preamp build!
  11. Any Tube Designers Out There: Money For You
  12. Output Transformer Questions
  13. cathode bias redplate question
  14. eyelets and radial capacitors
  15. Help with MiniBlok II
  16. Reading Sovtek Date Codes
  17. ECF or PCF80 as a headphone amp
  18. 60 Watt Mono Build
  19. Amp for Klipsch Heresy
  20. The ultimate 300B
  21. Stage gain and cascading
  22. NOS Tube Socket Question
  23. 75 Watt/Channel Monoblock Custom Amp
  24. Wiring variac
  25. 1SH29B russian miniature tube - useful for audio?
  26. Humming in PP EL84 Tubes aMP.
  27. Repurposing a Tube Reel to Reel
  28. YaQin MC-10L Vs ST70: Sound Quality
  29. Voltage VS. Amperage?
  30. 3 questions about 6B4g
  31. DIY OPT - are these good?
  32. Audio Research regulators
  33. 0C3 for lowering down the screens?
  34. radio like interference condition in SA-100
  35. PCL86 heater flash
  36. Tube powered subwoofer
  37. Anyone have experience with Shuguang 805A
  38. The emperor's new amplifier
  39. Power supply question:twin choke input?
  40. El-84 vs El-86
  41. Modifying Tektronix Type-E Plugin
  42. radio coming thru speakers.
  43. FM tube tuner
  44. diy el 34 se
  45. Transformers Specs for a 2x KT88 Amp
  46. 805 Positive or Negative Grid
  47. Point To Point, 100 percent, No Kit
  48. More line loads etc
  49. B300 C120 rectifier replacement.
  50. Triode simulation/emulation with solid state
  51. What is the driver circuit here?
  52. Dynaco Mark III
  53. ReCap- Heathkit AA-151 Help
  54. Hammond Chassis?
  55. How about an IXCP10M90 as a FETRON
  56. PUSH PULL SE ???
  57. More load lines...
  58. 7193/2C22: wich brand's the best?
  59. Bumed out over this Setchell Carlson
  60. Looking for Electron flow diagram
  61. Why Only Automatic/Semi-Automatic Bias?
  62. Audio Note M-Zero preamp
  63. Load lines. What?
  64. Preamp - pop on channel change
  65. Just for interest.
  66. 813 push-pull output 250W tube amp
  67. What sort of resistors are fine to use in tube amps?
  68. How Not To Pack DHTs For Postal Shipment
  69. Help me ID this trafo and tubes..
  70. Full PSE Amp /only 6E5P/
  71. ATH90
  72. Corroded valve pins
  73. Power supply advice needed
  74. Big Capacitors in PSU
  75. 6CD6G Tube amp
  76. Removal of Cathode Follower in JE Labs Circuit
  77. Q: Cascaded Transformers, S&B102+LL7903
  78. Threshold dac 1e possible modd
  79. Need Help with PSVANE 6CA7-T
  80. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  81. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  82. Recommendations & Budget for DIY Tube Amp kit?
  83. Recommend a good plate choke for 5842 tube
  84. Recomendations for SE 6AQ5 Schematics?
  85. ST35 Phase Splitter
  86. german console pull recap Project - help needed
  87. 6B4G Monkey help
  88. These transformers can be used for EL84 SE?
  89. 300B...Ebay or DIY??
  90. Higher gain twin triode!
  91. ARC V70 bias
  92. 70v transformers explored.
  93. Are these caps stuffed ?
  94. Anyone recognizes this amp ?
  95. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  96. My tube differential amplifier
  97. Helping a friend build a tube headphone amp.
  98. Tango XE-20S, tube option
  99. -follower with mosfet... how stable ?
  100. 5k or 2.5k for 6s45p
  101. minor hum problem
  102. Help to choose budget Tube Amp....
  103. Vao
  104. Help with tube-rolling 300b Ming-Da amp?
  105. EF184 pins 1 and 3
  106. aikido pre (5687 all in one) HUMM!!
  107. Question about tube datasheets
  108. EL84 "typical" amplifier
  109. Packing heat.
  110. Current rating for power transformer.
  111. Pentode Odd Behavior
  112. Lower Screen Voltage KT88, choke input + Cap input supply
  113. tannoy line trans
  114. Hi Gain Inverter for a PP amp
  115. Help looking for a project
  116. Dynaco MkIII bias flutter/stability...
  117. grid leak resistor?
  118. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  119. Fisher 800-C blown fuse
  120. testing 300B on Hickok 539B/C
  121. cathode bias imbalance
  122. DIY M60 OTL Power Amplifiers
  123. Invisible gain...Aikido content
  124. Vacuum Tube Spice Models
  125. Tamura interstages
  126. Jolida 502/302b power transformer.
  127. Anyone used high voltage MKP1848 caps
  128. Bogen mo-200
  129. Phono Circuit Noise Factor
  130. Input impedance of this headphone amplifier ?
  131. D3a preamp.
  132. Newbie needs advice about DIY project please!
  133. PSUD and Off load Voltage
  134. Help! AVO CT-160 Meltdown
  135. Groovewatt-Valve RIAA Phono Preamp?
  136. Mullard EL84 Reissue?
  137. Push Pull amp power supply question
  138. Aikido all in one 5687 tube pre / louder in right Channel
  139. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  140. Tube Amp
  141. Preamp Pentode Screen Voltage and Gain
  142. AUDIBLE iLLUSION m3A
  143. What "Class" amp is this?
  144. DC coupling
  145. DuKane 1A831
  146. Thump sound at turn off of a power amp
  147. DHT AC heating 120hz phase canceling
  148. REVOX Model 40 amp. Need some hand holding please.
  149. heater imbalance fixable?
  150. Headphone amp
  151. Speech Amp for Modulator
  152. 2.1 channel el84 amp help
  153. Identify PC board in little amp...
  154. dcpp vs sse vs spp? First build
  155. Spice model for GU50 (LT-Spice)
  156. Need schematic of Preamplifier AM 1065
  157. My Journey to build Tube power amplifier B300 SE
  158. Kondo M77
  159. tube datasheet gm
  160. xiang sheng best valves
  161. 6CN6/EL38 Replacement
  162. 4P55
  163. Possible or way to complicated?
  164. Jeff korneff SET 45
  165. Hickok 536 Calibration Procedure?
  166. P2p layout
  167. Heating tubes off mains voltage
  168. EL84 as preamp tube?
  169. Claus Byrith 4-30 PP with KT66
  170. biasing confusion
  171. Bogen HE-10 question
  172. Golden Tube Audio SE-100
  173. Nearing Conclusion of Line/Phono Project
  174. Bias Supply For Citation V?
  175. Tube Integrated Amp
  176. Help needed about a quad FM2 RF
  177. 21jv6 tube datasheet
  178. Interstage transformer theoretical phase change?
  179. Bootstrapping a high pass filter
  180. Help with hybrid Aikido amp! Suggestions please
  181. Need help with a Curcio Daniel 1
  182. Audio Tubes used in Industrial equipment?
  183. Hammond H1 Amp
  184. CCS assisted small signal UL pentode
  185. Vox AC50 output transformer rewind
  186. Dynaco ST35 B+
  187. Simple Tube Amp
  188. Portable tube amplifier
  189. Using the heater supply to get a DC source
  190. phono/aux switching problem
  191. What is the best EF86 in production at the moment
  192. 12AX7 / 12AT7 Mu Follower Phono
  193. Kreisler Stereo 6 speaker impedance
  194. A serviceable life.....
  195. TV 7 DU Tube info
  196. Twinings Tea Transformer Covers
  197. ECC88 with 12V heaters
  198. CXhange opa 627ap for an audio gd moon ?
  199. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  200. fatman itube mk1 sounds bad
  201. Chinese FD-71 tube is the russian GK-71 ?
  202. Leak stereo 20 diagnosis
  203. VTL
  204. Looking for tubed MC pre-pre
  205. Correct wiring types
  206. Couplates
  207. Op-Amp Like Line Preamp
  208. SE GU-50/6CB6 Pentode Design
  209. Pioneer SX34
  210. About metal film resistor in a tube tuner
  211. Looking for 52dBs or more MM phono
  212. Winter is coming... Time to start GM70 SE parafeed amp
  213. Doug Self: Wireless World Magazine Article Archive
  214. Relay short circuit
  215. EL34 PP oscillating
  216. Dynaco switchable diode/tube rec and driver tube mode
  217. CCS into a VR with Interstage question
  218. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  219. Rectifier and DC filtering relationship question
  220. Class A2 6JD5 Curves
  221. Motorola HS-839 Amp problem
  222. Active valve monitors?
  223. Did I get this load calculation right?
  224. Convergent SL1 original schematic
  225. Bleed down resistor
  226. How do I calculate resistor value in this schematic?
  227. Easy question about tube data sheet
  228. Tube regulator question
  229. Tube amp build for an 1st timer.
  230. Full music 101d input tube/valve
  231. EZ80 Voltage Question
  232. What the heck is this? Bulb?
  233. Audio Note Kit 1 Upgrade
  234. Will this work? (EL34 PP)
  235. Anthem 1 intergrated amp
  236. Tubes and the sun?
  237. Two triodes cascaded cathode follower?
  238. HIRAGA PREAMP PHONO + line
  239. OB2WA Radioactive???
  240. 9 pin tube socket pcb boards with screw terminals
  241. Hai I need a little help on designing a power supply
  242. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  243. Cleaning Up the Noise + Selector Switch Anomalie
  244. first tube preamp
  245. Rescuing a vessel : 1964 HICKOK 539C tube tester
  246. Dynaco Feedback
  247. Mundorf Silver Oil in hot 300B tube amplifier !!
  248. MULLARD 5-20 build with mods
  249. Choke loaded driver with small opt?
  250. Preamp Tube Bias and feedback

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