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  1. Flexible tube (or SS) electronic XO
  2. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  3. Transformer revers use question
  4. Fixed bias, cathode feedback?
  5. spudnik, spudMiG ?
  6. I need the KT120 base dimensions
  7. Need help with chassis layout.
  8. tube amp ID ?
  9. GU50 filaments voltage!
  10. Does anybody have an RCA RS171 Schematic
  11. Opinions wanted: Low Z SE power supplies
  12. DC heaters, best way to bias ?
  13. Ignition coil as SE OPT
  14. Opt color code identification (Onetics)
  15. Drawback to Larger Capacity Output Transformer Than Required?
  16. Send me some pictures of your amps
  17. leak stereo 60
  18. B2 Spice V5.0
  19. Mains Fuse and Switch Best Practice
  20. Identify these vintage tube amp rivets
  21. RCA ORTHOPHONIC LMI-32216A manual copy needed
  22. Question on strange 6l6 schematic symbols
  23. Resistor value?
  24. Paper / plastic hybrid capacitor
  25. ST70 chassis polishing
  26. Octal to RCA
  27. KT120 plate load for 150+watts
  28. Need a copy of Aikido 5687 manual pdf
  29. Nutshell Raven Headphone amp with balanced I/O
  30. Bartolucci: beware of him !!!
  31. Finding plate resistance
  32. Pleides Tube only headphone amp
  33. I think I know what I want (seasoned advice)
  34. CCS filament supply vs inductors for DHT
  35. Cap outer foil low impedance help...
  36. Distorted low end SE micro amp
  37. LM3886 + ECC82/12AU7
  38. My LCR phono with HUM....
  39. Winter 2A3 SET project.
  40. 6BQ5 pp with LM317 ccs
  41. maratz 7 clone
  42. Music Angel pre-amplifier - few modifications
  43. Transformer Questions (1st Amp Project)
  44. Morgan Jones and PS Bypass Caps
  45. Ruby Tuby at 24V?
  46. Budget Iron for Low-Power SET
  47. Output transformer mounting questions
  48. 3c24 preamp?
  49. Newb Q - JE Simple 2A3 as Monoblocks
  50. Vacuum tube amp design
  51. Counterpoint SA7.1 circuit question
  52. Variable Gain Control Topology
  53. Unknown amplifier, anyone recognice it?
  54. Harman Kardon "The Lute" A-220 - Repair manual?
  55. G2 input grid 6DQ6 push pull
  56. Schade SE 6550
  57. Heathkit aa-23 fix up
  58. 6SN7 Line Stage w/ Tone Controls
  59. Octal Heaven??
  60. how do i reach Chris the georgetown technician?
  61. mu follower bootstrap cap value
  62. POLL: The Legendary Williamson Amp Modified By SY
  63. 5Y3 PSU Question
  64. jolida 302b sweet sounding amp vs Audio Innovations 500
  65. MFA M120 any personal experience values and reviews?
  66. Scott 233D one channel bad - Next Project?
  67. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  68. This Look Right?
  69. SIMPLE KIT with step by step instruction
  70. Ultra Simple PP ECC99?
  71. Heathkit Audio Analyzer
  72. The Best Valve Amp Design In Modern Time: Poll Candidates
  73. Current Requirements for Power Tubes
  74. Thermionic generator (Triode) appears to be real this time...
  75. Choosing Tube + OPT for preamp
  76. My first preamp with tubes
  77. Another New Guy Starting With %@&?~ Chinese PCB
  78. Question about output transformers.
  79. NEETS & Kirchhoff , I'm stuck
  80. Reviving a late 50's el84-based hifi
  81. Need a 7K a-a
  82. Tube ID
  83. Anyone know what these are?
  84. Let's Talk About Grounding
  85. Tube Pre Amp DIY Schematic
  86. Rectifier choice
  87. power transformer fo single tube ecl82 amplifier
  88. Today's Version of The Williamson Amp
  89. what's wrong with my calculations?
  90. Phono stage design considerations part 1: choosing 1st stage tube
  91. Can anyone suggest a practical use for this gauge on a tube amp
  92. Completed my 829 PPP w/ pmillet's driver pcb's.
  93. adding input transformer to Sony sra-2 tube preamp
  94. 6P45S 50W mono block tube amplifier
  95. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  96. curious answer from CommonSense Audio
  97. Local Feedback for Push Pull Pentode
  98. Hickok Tv-7D/U A Setting not working
  99. Exotic interstage transformers
  100. DAC & Tube Preamp, Elevated Heater Question
  101. This Schematic Sounds Great
  102. Most Exotic MM phono preamplifier
  103. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  104. Strange noises on my Aikido power on
  105. lost capacitance
  106. Best SE KT66 schematic?
  107. Mixing old and new tubes
  108. Mullard 3 Tube 3 watt amplifier Question
  109. Darling Pre-amplifier using WCF for 1626's
  110. Is my tube broken? Which one should replace it?
  111. What Exactly Is Voltage Drop
  112. simplex (6c33c se amp) and stabilized current
  113. Transformers with dual primaries?
  114. Building the VTA, tubes4hifi PH16 Phono Stage
  115. K&E Preamplifier
  116. 12ax7:top psvane or top shuguang?
  117. Software To Help Design Tube Amplifier
  118. How can I drop B+ Voltage
  119. Eico HF-60's power supply.
  120. Need help with Output Transformer for EL84
  121. Where to reference filaments to ground?
  122. Maratnz 9 irons
  123. Noisy re-purposed MOT
  124. Mullard HQ Stereo Amp - Transformers Question
  125. C3g triode-strapped linearity question
  126. Making tube Rp disappear now
  127. 6E5P Connection Question
  128. Push Pull stereo amp bridged to monoblock operation
  129. Mr Blohbaum's Multiplied Transconductance Amp
  130. Vintage output transformer ID
  131. Getting Rid of Some Stickys
  132. Grid is Referenced To Ground through resistor? WHAT?
  133. Problem with CCSIC in Tubelab SE
  134. AP testing of the 6L6 SE
  135. output impedance
  136. 11BM8 heater wiring question
  137. Lower AC ripple on one side of coupling cap than the other side?
  138. HELP!! K12G Valve kit transformer
  139. 4 x EL34 or 2 x 6550 in a pp amp
  140. 5965 Telefunken tube U mh CO label ?
  141. 845 IT couple amp
  142. What makes an output tube "run away"
  143. P. Millett Engineers Amplifier
  144. Biasing problem
  145. Direct coupled driver stage - bias design
  146. Monoblock project
  147. Series DC Heater chain
  148. Tranformer advice for small powered amp.
  149. Circuit for testing tube/valve - Help!
  150. new Tubes for MHZS 33
  151. Teeny Tiny Spud
  152. Paging Andy Bartha
  153. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  154. aikido octal all-in-one manual
  155. Conrad Johnson MV75 help needed
  156. Leak tl12+ ECC81
  157. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  158. Amperex AX569
  159. Marconi tube ID help
  160. ST-70 Input Stage, Explained For Extreme Beginners
  161. heaters connected to cathode?!
  162. HK Citation I rebuild question.
  163. tube 4-125A design
  164. Mod FISHER 100AZ-balanced input!?
  165. Akidio PS-17 CLC Resistance Value Choices
  166. More questions on parallel push-pull
  167. Inputs needed for Power Transformer Design!
  168. seeking advice about Welborne Labs kit
  169. 2A3 Design: Real World Gain Question
  170. 6M11 push-pull spud amp
  171. My first Console mod - Class is in session
  172. Wright Sound WPA 3.5 Power Transformer Replacement Options
  173. DF 96 tube
  174. S.A.C.T valve transformers
  175. Very strange....
  176. Advice Needed on PSU Over voltage
  177. Griffin G170 schematic needed
  178. Funny comment about the religion of SE
  179. calculate needed wattage for output transformer
  180. AP1 tube preamp assistance needed,please?
  181. 6AN8 or ECF80 ?
  182. Simple Cheap Amp Using 6l6 and/or 12ax7?
  183. Which Tube Amp Kit Sounds Best
  184. Push Pull 6HJ5 Monoblocks
  185. 100 V transformers
  186. unstable right channel
  187. Aikido 9 pin tubes for 2a3
  188. preamp kit
  189. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  190. Build ideas? New tube amp find and I'd like some input please.
  191. OB2 SPICE model
  192. Push pull - driver tube plate voltage
  193. Voltage Doubler Caps
  194. Morgan Jones Regulator - Questions
  195. Gu-50 SE Amp , quick question...
  196. Tube Amp Open Circuit Protection
  197. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  198. je labs type 76 preamp build!
  199. Any Tube Designers Out There: Money For You
  200. Output Transformer Questions
  201. cathode bias redplate question
  202. eyelets and radial capacitors
  203. Help with MiniBlok II
  204. Reading Sovtek Date Codes
  205. ECF or PCF80 as a headphone amp
  206. 60 Watt Mono Build
  207. Amp for Klipsch Heresy
  208. The ULTIMATE 300B
  209. Stage gain and cascading
  210. NOS Tube Socket Question
  211. 75 Watt/Channel Monoblock Custom Amp
  212. Wiring variac
  213. 1SH29B russian miniature tube - useful for audio?
  214. Humming in PP EL84 Tubes aMP.
  215. Repurposing a Tube Reel to Reel
  216. YaQin MC-10L Vs ST70: Sound Quality
  217. Voltage VS. Amperage?
  218. 3 questions about 6B4g
  219. DIY OPT - are these good?
  220. Audio Research regulators
  221. 0C3 for lowering down the screens?
  222. radio like interference condition in SA-100
  223. PCL86 heater flash
  224. Tube powered subwoofer
  225. Anyone have experience with Shuguang 805A
  226. The emperor's new amplifier
  227. Power supply question:twin choke input?
  228. El-84 vs El-86
  229. Modifying Tektronix Type-E Plugin
  230. radio coming thru speakers.
  231. FM tube tuner
  232. diy el 34 se
  233. Transformers Specs for a 2x KT88 Amp
  234. 805 Positive or Negative Grid
  235. Point To Point, 100 percent, No Kit
  236. More line loads etc
  237. B300 C120 rectifier replacement.
  238. Triode simulation/emulation with solid state
  239. What is the driver circuit here?
  240. Dynaco Mark III
  241. ReCap- Heathkit AA-151 Help
  242. Hammond Chassis?
  243. How about an IXCP10M90 as a FETRON
  244. PUSH PULL SE ???
  245. More load lines...
  246. 7193/2C22: wich brand's the best?
  247. Bumed out over this Setchell Carlson
  248. Looking for Electron flow diagram
  249. Why Only Automatic/Semi-Automatic Bias?
  250. Audio Note M-Zero preamp

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