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  1. Reviving a late 50's el84-based hifi
  2. Need a 7K a-a
  3. Tube ID
  4. Anyone know what these are?
  5. Let's Talk About Grounding
  6. Tube Pre Amp DIY Schematic
  7. Rectifier choice
  8. power transformer fo single tube ecl82 amplifier
  9. Today's Version of The Williamson Amp
  10. what's wrong with my calculations?
  11. Phono stage design considerations part 1: choosing 1st stage tube
  12. Can anyone suggest a practical use for this gauge on a tube amp
  13. Completed my 829 PPP w/ pmillet's driver pcb's.
  14. adding input transformer to Sony sra-2 tube preamp
  15. 6P45S 50W mono block tube amplifier
  16. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  17. curious answer from CommonSense Audio
  18. Local Feedback for Push Pull Pentode
  19. Hickok Tv-7D/U A Setting not working
  20. Exotic interstage transformers
  21. DAC & Tube Preamp, Elevated Heater Question
  22. This Schematic Sounds Great
  23. Most Exotic MM phono preamplifier
  24. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  25. Strange noises on my Aikido power on
  26. lost capacitance
  27. Best SE KT66 schematic?
  28. Mixing old and new tubes
  29. Mullard 3 Tube 3 watt amplifier Question
  30. Darling Pre-amplifier using WCF for 1626's
  31. Is my tube broken? Which one should replace it?
  32. What Exactly Is Voltage Drop
  33. simplex (6c33c se amp) and stabilized current
  34. Transformers with dual primaries?
  35. Building the VTA, tubes4hifi PH16 Phono Stage
  36. K&E Preamplifier
  37. 12ax7:top psvane or top shuguang?
  38. Software To Help Design Tube Amplifier
  39. How can I drop B+ Voltage
  40. Eico HF-60's power supply.
  41. Need help with Output Transformer for EL84
  42. Where to reference filaments to ground?
  43. Maratnz 9 irons
  44. Noisy re-purposed MOT
  45. Mullard HQ Stereo Amp - Transformers Question
  46. C3g triode-strapped linearity question
  47. Making tube Rp disappear now
  48. 6E5P Connection Question
  49. Push Pull stereo amp bridged to monoblock operation
  50. Mr Blohbaum's Multiplied Transconductance Amp
  51. Vintage output transformer ID
  52. Getting Rid of Some Stickys
  53. Grid is Referenced To Ground through resistor? WHAT?
  54. Problem with CCSIC in Tubelab SE
  55. AP testing of the 6L6 SE
  56. output impedance
  57. 11BM8 heater wiring question
  58. Lower AC ripple on one side of coupling cap than the other side?
  59. HELP!! K12G Valve kit transformer
  60. 4 x EL34 or 2 x 6550 in a pp amp
  61. 5965 Telefunken tube U mh CO label ?
  62. 845 IT couple amp
  63. What makes an output tube "run away"
  64. P. Millett Engineers Amplifier
  65. Biasing problem
  66. Direct coupled driver stage - bias design
  67. Monoblock project
  68. Series DC Heater chain
  69. Tranformer advice for small powered amp.
  70. Circuit for testing tube/valve - Help!
  71. new Tubes for MHZS 33
  72. Teeny Tiny Spud
  73. Paging Andy Bartha
  74. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  75. aikido octal all-in-one manual
  76. Conrad Johnson MV75 help needed
  77. Leak tl12+ ECC81
  78. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  79. Amperex AX569
  80. Marconi tube ID help
  81. ST-70 Input Stage, Explained For Extreme Beginners
  82. heaters connected to cathode?!
  83. HK Citation I rebuild question.
  84. tube 4-125A design
  85. Mod FISHER 100AZ-balanced input!?
  86. Akidio PS-17 CLC Resistance Value Choices
  87. More questions on parallel push-pull
  88. Inputs needed for Power Transformer Design!
  89. seeking advice about Welborne Labs kit
  90. 2A3 Design: Real World Gain Question
  91. 6M11 push-pull spud amp
  92. My first Console mod - Class is in session
  93. Wright Sound WPA 3.5 Power Transformer Replacement Options
  94. DF 96 tube
  95. S.A.C.T valve transformers
  96. Very strange....
  97. Advice Needed on PSU Over voltage
  98. Griffin G170 schematic needed
  99. Funny comment about the religion of SE
  100. calculate needed wattage for output transformer
  101. AP1 tube preamp assistance needed,please?
  102. 6AN8 or ECF80 ?
  103. Simple Cheap Amp Using 6l6 and/or 12ax7?
  104. Which Tube Amp Kit Sounds Best
  105. Push Pull 6HJ5 Monoblocks
  106. 100 V transformers
  107. unstable right channel
  108. Aikido 9 pin tubes for 2a3
  109. preamp kit
  110. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  111. Build ideas? New tube amp find and I'd like some input please.
  112. OB2 SPICE model
  113. Push pull - driver tube plate voltage
  114. Voltage Doubler Caps
  115. Morgan Jones Regulator - Questions
  116. Gu-50 SE Amp , quick question...
  117. Tube Amp Open Circuit Protection
  118. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  119. je labs type 76 preamp build!
  120. Any Tube Designers Out There: Money For You
  121. Output Transformer Questions
  122. cathode bias redplate question
  123. eyelets and radial capacitors
  124. Help with MiniBlok II
  125. Reading Sovtek Date Codes
  126. ECF or PCF80 as a headphone amp
  127. 60 Watt Mono Build
  128. Amp for Klipsch Heresy
  129. The ultimate 300B
  130. Stage gain and cascading
  131. NOS Tube Socket Question
  132. 75 Watt/Channel Monoblock Custom Amp
  133. Wiring variac
  134. 1SH29B russian miniature tube - useful for audio?
  135. Humming in PP EL84 Tubes aMP.
  136. Repurposing a Tube Reel to Reel
  137. YaQin MC-10L Vs ST70: Sound Quality
  138. Voltage VS. Amperage?
  139. 3 questions about 6B4g
  140. DIY OPT - are these good?
  141. Audio Research regulators
  142. 0C3 for lowering down the screens?
  143. radio like interference condition in SA-100
  144. PCL86 heater flash
  145. Tube powered subwoofer
  146. Anyone have experience with Shuguang 805A
  147. The emperor's new amplifier
  148. Power supply question:twin choke input?
  149. El-84 vs El-86
  150. Modifying Tektronix Type-E Plugin
  151. radio coming thru speakers.
  152. FM tube tuner
  153. diy el 34 se
  154. Transformers Specs for a 2x KT88 Amp
  155. 805 Positive or Negative Grid
  156. Point To Point, 100 percent, No Kit
  157. More line loads etc
  158. B300 C120 rectifier replacement.
  159. Triode simulation/emulation with solid state
  160. What is the driver circuit here?
  161. Dynaco Mark III
  162. ReCap- Heathkit AA-151 Help
  163. Hammond Chassis?
  164. How about an IXCP10M90 as a FETRON
  165. PUSH PULL SE ???
  166. More load lines...
  167. 7193/2C22: wich brand's the best?
  168. Bumed out over this Setchell Carlson
  169. Looking for Electron flow diagram
  170. Why Only Automatic/Semi-Automatic Bias?
  171. Audio Note M-Zero preamp
  172. Load lines. What?
  173. Preamp - pop on channel change
  174. Just for interest.
  175. 813 push-pull output 250W tube amp
  176. What sort of resistors are fine to use in tube amps?
  177. How Not To Pack DHTs For Postal Shipment
  178. Help me ID this trafo and tubes..
  179. Full PSE Amp /only 6E5P/
  180. ATH90
  181. Corroded valve pins
  182. Power supply advice needed
  183. Big Capacitors in PSU
  184. 6CD6G Tube amp
  185. Removal of Cathode Follower in JE Labs Circuit
  186. Q: Cascaded Transformers, S&B102+LL7903
  187. Threshold dac 1e possible modd
  188. Need Help with PSVANE 6CA7-T
  189. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  190. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  191. Recommendations & Budget for DIY Tube Amp kit?
  192. Recommend a good plate choke for 5842 tube
  193. Recomendations for SE 6AQ5 Schematics?
  194. ST35 Phase Splitter
  195. german console pull recap Project - help needed
  196. 6B4G Monkey help
  197. These transformers can be used for EL84 SE?
  198. 300B...Ebay or DIY??
  199. Higher gain twin triode!
  200. ARC V70 bias
  201. 70v transformers explored.
  202. Are these caps stuffed ?
  203. Anyone recognizes this amp ?
  204. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  205. My tube differential amplifier
  206. Helping a friend build a tube headphone amp.
  207. Tango XE-20S, tube option
  208. -follower with mosfet... how stable ?
  209. 5k or 2.5k for 6s45p
  210. minor hum problem
  211. Help to choose budget Tube Amp....
  212. Vao
  213. Help with tube-rolling 300b Ming-Da amp?
  214. EF184 pins 1 and 3
  215. aikido pre (5687 all in one) HUMM!!
  216. Question about tube datasheets
  217. EL84 "typical" amplifier
  218. Packing heat.
  219. Current rating for power transformer.
  220. Pentode Odd Behavior
  221. Lower Screen Voltage KT88, choke input + Cap input supply
  222. tannoy line trans
  223. Hi Gain Inverter for a PP amp
  224. Help looking for a project
  225. Dynaco MkIII bias flutter/stability...
  226. grid leak resistor?
  227. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  228. Fisher 800-C blown fuse
  229. testing 300B on Hickok 539B/C
  230. cathode bias imbalance
  231. DIY M60 OTL Power Amplifiers
  232. Invisible gain...Aikido content
  233. Vacuum Tube Spice Models
  234. Tamura interstages
  235. Jolida 502/302b power transformer.
  236. Anyone used high voltage MKP1848 caps
  237. Bogen mo-200
  238. Phono Circuit Noise Factor
  239. Input impedance of this headphone amplifier ?
  240. D3a preamp.
  241. Newbie needs advice about DIY project please!
  242. PSUD and Off load Voltage
  243. Help! AVO CT-160 Meltdown
  244. Groovewatt-Valve RIAA Phono Preamp?
  245. Mullard EL84 Reissue?
  246. Push Pull amp power supply question
  247. Aikido all in one 5687 tube pre / louder in right Channel
  248. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  249. Tube Amp
  250. Preamp Pentode Screen Voltage and Gain

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