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  1. Ultra Simple PP ECC99?
  2. Heathkit Audio Analyzer
  3. The Best Valve Amp Design In Modern Time: Poll Candidates
  4. Current Requirements for Power Tubes
  5. Thermionic generator (Triode) appears to be real this time...
  6. Choosing Tube + OPT for preamp
  7. My first preamp with tubes
  8. Another New Guy Starting With %@&?~ Chinese PCB
  9. Question about output transformers.
  10. NEETS & Kirchhoff , I'm stuck
  11. Reviving a late 50's el84-based hifi
  12. Need a 7K a-a
  13. Tube ID
  14. Anyone know what these are?
  15. Let's Talk About Grounding
  16. Tube Pre Amp DIY Schematic
  17. Rectifier choice
  18. power transformer fo single tube ecl82 amplifier
  19. Today's Version of The Williamson Amp
  20. what's wrong with my calculations?
  21. Phono stage design considerations part 1: choosing 1st stage tube
  22. Can anyone suggest a practical use for this gauge on a tube amp
  23. Completed my 829 PPP w/ pmillet's driver pcb's.
  24. adding input transformer to Sony sra-2 tube preamp
  25. 6P45S 50W mono block tube amplifier
  26. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  27. curious answer from CommonSense Audio
  28. Local Feedback for Push Pull Pentode
  29. Hickok Tv-7D/U A Setting not working
  30. Exotic interstage transformers
  31. DAC & Tube Preamp, Elevated Heater Question
  32. This Schematic Sounds Great
  33. Most Exotic MM phono preamplifier
  34. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  35. Strange noises on my Aikido power on
  36. lost capacitance
  37. Best SE KT66 schematic?
  38. Mixing old and new tubes
  39. Mullard 3 Tube 3 watt amplifier Question
  40. Darling Pre-amplifier using WCF for 1626's
  41. Is my tube broken? Which one should replace it?
  42. What Exactly Is Voltage Drop
  43. simplex (6c33c se amp) and stabilized current
  44. Transformers with dual primaries?
  45. Building the VTA, tubes4hifi PH16 Phono Stage
  46. K&E Preamplifier
  47. 12ax7:top psvane or top shuguang?
  48. Software To Help Design Tube Amplifier
  49. How can I drop B+ Voltage
  50. Eico HF-60's power supply.
  51. Need help with Output Transformer for EL84
  52. Where to reference filaments to ground?
  53. Maratnz 9 irons
  54. Noisy re-purposed MOT
  55. Mullard HQ Stereo Amp - Transformers Question
  56. C3g triode-strapped linearity question
  57. Making tube Rp disappear now
  58. 6E5P Connection Question
  59. Push Pull stereo amp bridged to monoblock operation
  60. Mr Blohbaum's Multiplied Transconductance Amp
  61. Vintage output transformer ID
  62. Getting Rid of Some Stickys
  63. Grid is Referenced To Ground through resistor? WHAT?
  64. Problem with CCSIC in Tubelab SE
  65. AP testing of the 6L6 SE
  66. output impedance
  67. 11BM8 heater wiring question
  68. Lower AC ripple on one side of coupling cap than the other side?
  69. HELP!! K12G Valve kit transformer
  70. 4 x EL34 or 2 x 6550 in a pp amp
  71. 5965 Telefunken tube U mh CO label ?
  72. 845 IT couple amp
  73. What makes an output tube "run away"
  74. P. Millett Engineers Amplifier
  75. Biasing problem
  76. Direct coupled driver stage - bias design
  77. Monoblock project
  78. Series DC Heater chain
  79. Tranformer advice for small powered amp.
  80. Circuit for testing tube/valve - Help!
  81. new Tubes for MHZS 33
  82. Teeny Tiny Spud
  83. Paging Andy Bartha
  84. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  85. aikido octal all-in-one manual
  86. Conrad Johnson MV75 help needed
  87. Leak tl12+ ECC81
  88. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  89. Amperex AX569
  90. Marconi tube ID help
  91. ST-70 Input Stage, Explained For Extreme Beginners
  92. heaters connected to cathode?!
  93. HK Citation I rebuild question.
  94. tube 4-125A design
  95. Mod FISHER 100AZ-balanced input!?
  96. Akidio PS-17 CLC Resistance Value Choices
  97. More questions on parallel push-pull
  98. Inputs needed for Power Transformer Design!
  99. seeking advice about Welborne Labs kit
  100. 2A3 Design: Real World Gain Question
  101. 6M11 push-pull spud amp
  102. My first Console mod - Class is in session
  103. Wright Sound WPA 3.5 Power Transformer Replacement Options
  104. DF 96 tube
  105. S.A.C.T valve transformers
  106. Very strange....
  107. Advice Needed on PSU Over voltage
  108. Griffin G170 schematic needed
  109. Funny comment about the religion of SE
  110. calculate needed wattage for output transformer
  111. AP1 tube preamp assistance needed,please?
  112. 6AN8 or ECF80 ?
  113. Simple Cheap Amp Using 6l6 and/or 12ax7?
  114. Which Tube Amp Kit Sounds Best
  115. Push Pull 6HJ5 Monoblocks
  116. 100 V transformers
  117. unstable right channel
  118. Aikido 9 pin tubes for 2a3
  119. preamp kit
  120. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  121. Build ideas? New tube amp find and I'd like some input please.
  122. OB2 SPICE model
  123. Push pull - driver tube plate voltage
  124. Voltage Doubler Caps
  125. Morgan Jones Regulator - Questions
  126. Gu-50 SE Amp , quick question...
  127. Tube Amp Open Circuit Protection
  128. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  129. je labs type 76 preamp build!
  130. Any Tube Designers Out There: Money For You
  131. Output Transformer Questions
  132. cathode bias redplate question
  133. eyelets and radial capacitors
  134. Help with MiniBlok II
  135. Reading Sovtek Date Codes
  136. ECF or PCF80 as a headphone amp
  137. 60 Watt Mono Build
  138. Amp for Klipsch Heresy
  139. The ultimate 300B
  140. Stage gain and cascading
  141. NOS Tube Socket Question
  142. 75 Watt/Channel Monoblock Custom Amp
  143. Wiring variac
  144. 1SH29B russian miniature tube - useful for audio?
  145. Humming in PP EL84 Tubes aMP.
  146. Repurposing a Tube Reel to Reel
  147. YaQin MC-10L Vs ST70: Sound Quality
  148. Voltage VS. Amperage?
  149. 3 questions about 6B4g
  150. DIY OPT - are these good?
  151. Audio Research regulators
  152. 0C3 for lowering down the screens?
  153. radio like interference condition in SA-100
  154. PCL86 heater flash
  155. Tube powered subwoofer
  156. Anyone have experience with Shuguang 805A
  157. The emperor's new amplifier
  158. Power supply question:twin choke input?
  159. El-84 vs El-86
  160. Modifying Tektronix Type-E Plugin
  161. radio coming thru speakers.
  162. FM tube tuner
  163. diy el 34 se
  164. Transformers Specs for a 2x KT88 Amp
  165. 805 Positive or Negative Grid
  166. Point To Point, 100 percent, No Kit
  167. More line loads etc
  168. B300 C120 rectifier replacement.
  169. Triode simulation/emulation with solid state
  170. What is the driver circuit here?
  171. Dynaco Mark III
  172. ReCap- Heathkit AA-151 Help
  173. Hammond Chassis?
  174. How about an IXCP10M90 as a FETRON
  175. PUSH PULL SE ???
  176. More load lines...
  177. 7193/2C22: wich brand's the best?
  178. Bumed out over this Setchell Carlson
  179. Looking for Electron flow diagram
  180. Why Only Automatic/Semi-Automatic Bias?
  181. Audio Note M-Zero preamp
  182. Load lines. What?
  183. Preamp - pop on channel change
  184. Just for interest.
  185. 813 push-pull output 250W tube amp
  186. What sort of resistors are fine to use in tube amps?
  187. How Not To Pack DHTs For Postal Shipment
  188. Help me ID this trafo and tubes..
  189. Full PSE Amp /only 6E5P/
  190. ATH90
  191. Corroded valve pins
  192. Power supply advice needed
  193. Big Capacitors in PSU
  194. 6CD6G Tube amp
  195. Removal of Cathode Follower in JE Labs Circuit
  196. Q: Cascaded Transformers, S&B102+LL7903
  197. Threshold dac 1e possible modd
  198. Need Help with PSVANE 6CA7-T
  199. Why kind of Vacuun tube is the Tung-Sol TS 930 ??
  200. Magnetic Ballast (Sylvania) MB2 x 40/120 RS
  201. Recommendations & Budget for DIY Tube Amp kit?
  202. Recommend a good plate choke for 5842 tube
  203. Recomendations for SE 6AQ5 Schematics?
  204. ST35 Phase Splitter
  205. german console pull recap Project - help needed
  206. 6B4G Monkey help
  207. These transformers can be used for EL84 SE?
  208. 300B...Ebay or DIY??
  209. Higher gain twin triode!
  210. ARC V70 bias
  211. 70v transformers explored.
  212. Are these caps stuffed ?
  213. Anyone recognizes this amp ?
  214. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  215. My tube differential amplifier
  216. Helping a friend build a tube headphone amp.
  217. Tango XE-20S, tube option
  218. -follower with mosfet... how stable ?
  219. 5k or 2.5k for 6s45p
  220. minor hum problem
  221. Help to choose budget Tube Amp....
  222. Vao
  223. Help with tube-rolling 300b Ming-Da amp?
  224. EF184 pins 1 and 3
  225. aikido pre (5687 all in one) HUMM!!
  226. Question about tube datasheets
  227. EL84 "typical" amplifier
  228. Packing heat.
  229. Current rating for power transformer.
  230. Pentode Odd Behavior
  231. Lower Screen Voltage KT88, choke input + Cap input supply
  232. tannoy line trans
  233. Hi Gain Inverter for a PP amp
  234. Help looking for a project
  235. Dynaco MkIII bias flutter/stability...
  236. grid leak resistor?
  237. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  238. Fisher 800-C blown fuse
  239. testing 300B on Hickok 539B/C
  240. cathode bias imbalance
  241. DIY M60 OTL Power Amplifiers
  242. Invisible gain...Aikido content
  243. Vacuum Tube SPICE Models
  244. Tamura interstages
  245. Jolida 502/302b power transformer.
  246. Anyone used high voltage MKP1848 caps
  247. Bogen mo-200
  248. Phono Circuit Noise Factor
  249. Input impedance of this headphone amplifier ?
  250. D3a preamp.

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