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  1. PCL86 - Worth a try?
  2. Audio use 3D6/1299 ?
  3. How HOT should a LM317 get?
  4. KT88 amp questions
  5. Restoring a Motorola HS-1048A amp
  6. Please look at this schematic and tells me what have went wrong
  7. Lacking bass response after re-cap
  8. Generate a negative bias voltage?
  9. hammond 369ex instead of 269ex
  10. Recapped a pair of monoblocks
  11. Top Secret!
  12. Toggle or Rotary Switch for Phono Inputs
  13. Flexible tube (or SS) electronic XO
  14. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  15. Transformer revers use question
  16. Fixed bias, cathode feedback?
  17. spudnik, spudMiG ?
  18. I need the KT120 base dimensions
  19. Need help with chassis layout.
  20. tube amp ID ?
  21. GU50 filaments voltage!
  22. Does anybody have an RCA RS171 Schematic
  23. Opinions wanted: Low Z SE power supplies
  24. DC heaters, best way to bias ?
  25. Ignition coil as SE OPT
  26. Opt color code identification (Onetics)
  27. Drawback to Larger Capacity Output Transformer Than Required?
  28. Send me some pictures of your amps
  29. leak stereo 60
  30. B2 Spice V5.0
  31. Mains Fuse and Switch Best Practice
  32. Identify these vintage tube amp rivets
  33. RCA ORTHOPHONIC LMI-32216A manual copy needed
  34. Question on strange 6l6 schematic symbols
  35. Resistor value?
  36. Paper / plastic hybrid capacitor
  37. ST70 chassis polishing
  38. Octal to RCA
  39. KT120 plate load for 150+watts
  40. Need a copy of Aikido 5687 manual pdf
  41. Nutshell Raven Headphone amp with balanced I/O
  42. Bartolucci: beware of him !!!
  43. Finding plate resistance
  44. Pleides Tube only headphone amp
  45. I think I know what I want (seasoned advice)
  46. CCS filament supply vs inductors for DHT
  47. Cap outer foil low impedance help...
  48. Distorted low end SE micro amp
  49. LM3886 + ECC82/12AU7
  50. My LCR phono with HUM....
  51. Winter 2A3 SET project.
  52. 6BQ5 pp with LM317 ccs
  53. maratz 7 clone
  54. Music Angel pre-amplifier - few modifications
  55. Transformer Questions (1st Amp Project)
  56. Morgan Jones and PS Bypass Caps
  57. Ruby Tuby at 24V?
  58. Budget Iron for Low-Power SET
  59. Output transformer mounting questions
  60. 3c24 preamp?
  61. Newb Q - JE Simple 2A3 as Monoblocks
  62. Vacuum tube amp design
  63. Counterpoint SA7.1 circuit question
  64. Variable Gain Control Topology
  65. Unknown amplifier, anyone recognice it?
  66. Harman Kardon "The Lute" A-220 - Repair manual?
  67. G2 input grid 6DQ6 push pull
  68. Schade SE 6550
  69. Heathkit aa-23 fix up
  70. 6SN7 Line Stage w/ Tone Controls
  71. Octal Heaven??
  72. how do i reach Chris the georgetown technician?
  73. mu follower bootstrap cap value
  74. POLL: The Legendary Williamson Amp Modified By SY
  75. 5Y3 PSU Question
  76. jolida 302b sweet sounding amp vs Audio Innovations 500
  77. MFA M120 any personal experience values and reviews?
  78. Scott 233D one channel bad - Next Project?
  79. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  80. This Look Right?
  81. SIMPLE KIT with step by step instruction
  82. Ultra Simple PP ECC99?
  83. Heathkit Audio Analyzer
  84. The Best Valve Amp Design In Modern Time: Poll Candidates
  85. Current Requirements for Power Tubes
  86. Thermionic generator (Triode) appears to be real this time...
  87. Choosing Tube + OPT for preamp
  88. My first preamp with tubes
  89. Another New Guy Starting With %@&?~ Chinese PCB
  90. Question about output transformers.
  91. NEETS & Kirchhoff , I'm stuck
  92. Reviving a late 50's el84-based hifi
  93. Need a 7K a-a
  94. Tube ID
  95. Anyone know what these are?
  96. Let's Talk About Grounding
  97. Tube Pre Amp DIY Schematic
  98. Rectifier choice
  99. power transformer fo single tube ecl82 amplifier
  100. Today's Version of The Williamson Amp
  101. what's wrong with my calculations?
  102. Phono stage design considerations part 1: choosing 1st stage tube
  103. Can anyone suggest a practical use for this gauge on a tube amp
  104. Completed my 829 PPP w/ pmillet's driver pcb's.
  105. adding input transformer to Sony sra-2 tube preamp
  106. 6P45S 50W mono block tube amplifier
  107. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  108. curious answer from CommonSense Audio
  109. Local Feedback for Push Pull Pentode
  110. Hickok Tv-7D/U A Setting not working
  111. Exotic interstage transformers
  112. DAC & Tube Preamp, Elevated Heater Question
  113. This Schematic Sounds Great
  114. Most Exotic MM phono preamplifier
  115. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  116. Strange noises on my Aikido power on
  117. lost capacitance
  118. Best SE KT66 schematic?
  119. Mixing old and new tubes
  120. Mullard 3 Tube 3 watt amplifier Question
  121. Darling Pre-amplifier using WCF for 1626's
  122. Is my tube broken? Which one should replace it?
  123. What Exactly Is Voltage Drop
  124. simplex (6c33c se amp) and stabilized current
  125. Transformers with dual primaries?
  126. Building the VTA, tubes4hifi PH16 Phono Stage
  127. K&E Preamplifier
  128. 12ax7:top psvane or top shuguang?
  129. Software To Help Design Tube Amplifier
  130. How can I drop B+ Voltage
  131. Eico HF-60's power supply.
  132. Need help with Output Transformer for EL84
  133. Where to reference filaments to ground?
  134. Maratnz 9 irons
  135. Noisy re-purposed MOT
  136. Mullard HQ Stereo Amp - Transformers Question
  137. C3g triode-strapped linearity question
  138. Making tube Rp disappear now
  139. 6E5P Connection Question
  140. Push Pull stereo amp bridged to monoblock operation
  141. Mr Blohbaum's Multiplied Transconductance Amp
  142. Vintage output transformer ID
  143. Getting Rid of Some Stickys
  144. Grid is Referenced To Ground through resistor? WHAT?
  145. Problem with CCSIC in Tubelab SE
  146. AP testing of the 6L6 SE
  147. output impedance
  148. 11BM8 heater wiring question
  149. Lower AC ripple on one side of coupling cap than the other side?
  150. HELP!! K12G Valve kit transformer
  151. 4 x EL34 or 2 x 6550 in a pp amp
  152. 5965 Telefunken tube U mh CO label ?
  153. 845 IT couple amp
  154. What makes an output tube "run away"
  155. P. Millett Engineers Amplifier
  156. Biasing problem
  157. Direct coupled driver stage - bias design
  158. Monoblock project
  159. Series DC Heater chain
  160. Tranformer advice for small powered amp.
  161. Circuit for testing tube/valve - Help!
  162. new Tubes for MHZS 33
  163. Teeny Tiny Spud
  164. Paging Andy Bartha
  165. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  166. aikido octal all-in-one manual
  167. Conrad Johnson MV75 help needed
  168. Leak tl12+ ECC81
  169. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  170. Amperex AX569
  171. Marconi tube ID help
  172. ST-70 Input Stage, Explained For Extreme Beginners
  173. heaters connected to cathode?!
  174. HK Citation I rebuild question.
  175. tube 4-125A design
  176. Mod FISHER 100AZ-balanced input!?
  177. Akidio PS-17 CLC Resistance Value Choices
  178. More questions on parallel push-pull
  179. Inputs needed for Power Transformer Design!
  180. seeking advice about Welborne Labs kit
  181. 2A3 Design: Real World Gain Question
  182. 6M11 push-pull spud amp
  183. My first Console mod - Class is in session
  184. Wright Sound WPA 3.5 Power Transformer Replacement Options
  185. DF 96 tube
  186. S.A.C.T valve transformers
  187. Very strange....
  188. Advice Needed on PSU Over voltage
  189. Griffin G170 schematic needed
  190. Funny comment about the religion of SE
  191. calculate needed wattage for output transformer
  192. AP1 tube preamp assistance needed,please?
  193. 6AN8 or ECF80 ?
  194. Simple Cheap Amp Using 6l6 and/or 12ax7?
  195. Which Tube Amp Kit Sounds Best
  196. Push Pull 6HJ5 Monoblocks
  197. 100 V transformers
  198. unstable right channel
  199. Aikido 9 pin tubes for 2a3
  200. preamp kit
  201. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  202. Build ideas? New tube amp find and I'd like some input please.
  203. OB2 SPICE model
  204. Push pull - driver tube plate voltage
  205. Voltage Doubler Caps
  206. Morgan Jones Regulator - Questions
  207. Gu-50 SE Amp , quick question...
  208. Tube Amp Open Circuit Protection
  209. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  210. je labs type 76 preamp build!
  211. Any Tube Designers Out There: Money For You
  212. Output Transformer Questions
  213. cathode bias redplate question
  214. eyelets and radial capacitors
  215. Help with MiniBlok II
  216. Reading Sovtek Date Codes
  217. ECF or PCF80 as a headphone amp
  218. 60 Watt Mono Build
  219. Amp for Klipsch Heresy
  220. The ULTIMATE 300B
  221. Stage gain and cascading
  222. NOS Tube Socket Question
  223. 75 Watt/Channel Monoblock Custom Amp
  224. Wiring variac
  225. 1SH29B russian miniature tube - useful for audio?
  226. Humming in PP EL84 Tubes aMP.
  227. Repurposing a Tube Reel to Reel
  228. YaQin MC-10L Vs ST70: Sound Quality
  229. Voltage VS. Amperage?
  230. 3 questions about 6B4g
  231. DIY OPT - are these good?
  232. Audio Research regulators
  233. 0C3 for lowering down the screens?
  234. radio like interference condition in SA-100
  235. PCL86 heater flash
  236. Tube powered subwoofer
  237. Anyone have experience with Shuguang 805A
  238. The emperor's new amplifier
  239. Power supply question:twin choke input?
  240. El-84 vs El-86
  241. Modifying Tektronix Type-E Plugin
  242. radio coming thru speakers.
  243. FM tube tuner
  244. diy el 34 se
  245. Transformers Specs for a 2x KT88 Amp
  246. 805 Positive or Negative Grid
  247. Point To Point, 100 percent, No Kit
  248. More line loads etc
  249. B300 C120 rectifier replacement.
  250. Triode simulation/emulation with solid state

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