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  1. Lacking bass response after re-cap
  2. Generate a negative bias voltage?
  3. hammond 369ex instead of 269ex
  4. Recapped a pair of monoblocks
  5. Top Secret!
  6. Toggle or Rotary Switch for Phono Inputs
  7. Flexible tube (or SS) electronic XO
  8. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  9. Transformer revers use question
  10. Fixed bias, cathode feedback?
  11. spudnik, spudMiG ?
  12. I need the KT120 base dimensions
  13. Need help with chassis layout.
  14. tube amp ID ?
  15. GU50 filaments voltage!
  16. Does anybody have an RCA RS171 Schematic
  17. Opinions wanted: Low Z SE power supplies
  18. DC heaters, best way to bias ?
  19. Ignition coil as SE OPT
  20. Opt color code identification (Onetics)
  21. Drawback to Larger Capacity Output Transformer Than Required?
  22. Send me some pictures of your amps
  23. leak stereo 60
  24. B2 Spice V5.0
  25. Mains Fuse and Switch Best Practice
  26. Identify these vintage tube amp rivets
  27. RCA ORTHOPHONIC LMI-32216A manual copy needed
  28. Question on strange 6l6 schematic symbols
  29. Resistor value?
  30. Paper / plastic hybrid capacitor
  31. ST70 chassis polishing
  32. Octal to RCA
  33. KT120 plate load for 150+watts
  34. Need a copy of Aikido 5687 manual pdf
  35. Nutshell Raven Headphone amp with balanced I/O
  36. Bartolucci: beware of him !!!
  37. Finding plate resistance
  38. Pleides Tube only headphone amp
  39. I think I know what I want (seasoned advice)
  40. CCS filament supply vs inductors for DHT
  41. Cap outer foil low impedance help...
  42. Distorted low end SE micro amp
  43. LM3886 + ECC82/12AU7
  44. My LCR phono with HUM....
  45. Winter 2A3 SET project.
  46. 6BQ5 pp with LM317 ccs
  47. maratz 7 clone
  48. Music Angel pre-amplifier - few modifications
  49. Transformer Questions (1st Amp Project)
  50. Morgan Jones and PS Bypass Caps
  51. Ruby Tuby at 24V?
  52. Budget Iron for Low-Power SET
  53. Output transformer mounting questions
  54. 3c24 preamp?
  55. Newb Q - JE Simple 2A3 as Monoblocks
  56. Vacuum tube amp design
  57. Counterpoint SA7.1 circuit question
  58. Variable Gain Control Topology
  59. Unknown amplifier, anyone recognice it?
  60. Harman Kardon "The Lute" A-220 - Repair manual?
  61. G2 input grid 6DQ6 push pull
  62. Schade SE 6550
  63. Heathkit aa-23 fix up
  64. 6SN7 Line Stage w/ Tone Controls
  65. Octal Heaven??
  66. how do i reach Chris the georgetown technician?
  67. mu follower bootstrap cap value
  68. POLL: The Legendary Williamson Amp Modified By SY
  69. 5Y3 PSU Question
  70. jolida 302b sweet sounding amp vs Audio Innovations 500
  71. MFA M120 any personal experience values and reviews?
  72. Scott 233D one channel bad - Next Project?
  73. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  74. This Look Right?
  75. SIMPLE KIT with step by step instruction
  76. Ultra Simple PP ECC99?
  77. Heathkit Audio Analyzer
  78. The Best Valve Amp Design In Modern Time: Poll Candidates
  79. Current Requirements for Power Tubes
  80. Thermionic generator (Triode) appears to be real this time...
  81. Choosing Tube + OPT for preamp
  82. My first preamp with tubes
  83. Another New Guy Starting With %@&?~ Chinese PCB
  84. Question about output transformers.
  85. NEETS & Kirchhoff , I'm stuck
  86. Reviving a late 50's el84-based hifi
  87. Need a 7K a-a
  88. Tube ID
  89. Anyone know what these are?
  90. Let's Talk About Grounding
  91. Tube Pre Amp DIY Schematic
  92. Rectifier choice
  93. power transformer fo single tube ecl82 amplifier
  94. Today's Version of The Williamson Amp
  95. what's wrong with my calculations?
  96. Phono stage design considerations part 1: choosing 1st stage tube
  97. Can anyone suggest a practical use for this gauge on a tube amp
  98. Completed my 829 PPP w/ pmillet's driver pcb's.
  99. adding input transformer to Sony sra-2 tube preamp
  100. 6P45S 50W mono block tube amplifier
  101. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  102. curious answer from CommonSense Audio
  103. Local Feedback for Push Pull Pentode
  104. Hickok Tv-7D/U A Setting not working
  105. Exotic interstage transformers
  106. DAC & Tube Preamp, Elevated Heater Question
  107. This Schematic Sounds Great
  108. Most Exotic MM phono preamplifier
  109. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  110. Strange noises on my Aikido power on
  111. lost capacitance
  112. Best SE KT66 schematic?
  113. Mixing old and new tubes
  114. Mullard 3 Tube 3 watt amplifier Question
  115. Darling Pre-amplifier using WCF for 1626's
  116. Is my tube broken? Which one should replace it?
  117. What Exactly Is Voltage Drop
  118. simplex (6c33c se amp) and stabilized current
  119. Transformers with dual primaries?
  120. Building the VTA, tubes4hifi PH16 Phono Stage
  121. K&E Preamplifier
  122. 12ax7:top psvane or top shuguang?
  123. Software To Help Design Tube Amplifier
  124. How can I drop B+ Voltage
  125. Eico HF-60's power supply.
  126. Need help with Output Transformer for EL84
  127. Where to reference filaments to ground?
  128. Maratnz 9 irons
  129. Noisy re-purposed MOT
  130. Mullard HQ Stereo Amp - Transformers Question
  131. C3g triode-strapped linearity question
  132. Making tube Rp disappear now
  133. 6E5P Connection Question
  134. Push Pull stereo amp bridged to monoblock operation
  135. Mr Blohbaum's Multiplied Transconductance Amp
  136. Vintage output transformer ID
  137. Getting Rid of Some Stickys
  138. Grid is Referenced To Ground through resistor? WHAT?
  139. Problem with CCSIC in Tubelab SE
  140. AP testing of the 6L6 SE
  141. output impedance
  142. 11BM8 heater wiring question
  143. Lower AC ripple on one side of coupling cap than the other side?
  144. HELP!! K12G Valve kit transformer
  145. 4 x EL34 or 2 x 6550 in a pp amp
  146. 5965 Telefunken tube U mh CO label ?
  147. 845 IT couple amp
  148. What makes an output tube "run away"
  149. P. Millett Engineers Amplifier
  150. Biasing problem
  151. Direct coupled driver stage - bias design
  152. Monoblock project
  153. Series DC Heater chain
  154. Tranformer advice for small powered amp.
  155. Circuit for testing tube/valve - Help!
  156. new Tubes for MHZS 33
  157. Teeny Tiny Spud
  158. Paging Andy Bartha
  159. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  160. aikido octal all-in-one manual
  161. Conrad Johnson MV75 help needed
  162. Leak tl12+ ECC81
  163. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  164. Amperex AX569
  165. Marconi tube ID help
  166. ST-70 Input Stage, Explained For Extreme Beginners
  167. heaters connected to cathode?!
  168. HK Citation I rebuild question.
  169. tube 4-125A design
  170. Mod FISHER 100AZ-balanced input!?
  171. Akidio PS-17 CLC Resistance Value Choices
  172. More questions on parallel push-pull
  173. Inputs needed for Power Transformer Design!
  174. seeking advice about Welborne Labs kit
  175. 2A3 Design: Real World Gain Question
  176. 6M11 push-pull spud amp
  177. My first Console mod - Class is in session
  178. Wright Sound WPA 3.5 Power Transformer Replacement Options
  179. DF 96 tube
  180. S.A.C.T valve transformers
  181. Very strange....
  182. Advice Needed on PSU Over voltage
  183. Griffin G170 schematic needed
  184. Funny comment about the religion of SE
  185. calculate needed wattage for output transformer
  186. AP1 tube preamp assistance needed,please?
  187. 6AN8 or ECF80 ?
  188. Simple Cheap Amp Using 6l6 and/or 12ax7?
  189. Which Tube Amp Kit Sounds Best
  190. Push Pull 6HJ5 Monoblocks
  191. 100 V transformers
  192. unstable right channel
  193. Aikido 9 pin tubes for 2a3
  194. preamp kit
  195. 71a DHT Pre - MV Rectifier, Batteries, and TVC's
  196. Build ideas? New tube amp find and I'd like some input please.
  197. OB2 SPICE model
  198. Push pull - driver tube plate voltage
  199. Voltage Doubler Caps
  200. Morgan Jones Regulator - Questions
  201. Gu-50 SE Amp , quick question...
  202. Tube Amp Open Circuit Protection
  203. 6CU6 Sweep Tube Monoblock Power Amp Build Log
  204. je labs type 76 preamp build!
  205. Any Tube Designers Out There: Money For You
  206. Output Transformer Questions
  207. cathode bias redplate question
  208. eyelets and radial capacitors
  209. Help with MiniBlok II
  210. Reading Sovtek Date Codes
  211. ECF or PCF80 as a headphone amp
  212. 60 Watt Mono Build
  213. Amp for Klipsch Heresy
  214. The ULTIMATE 300B
  215. Stage gain and cascading
  216. NOS Tube Socket Question
  217. 75 Watt/Channel Monoblock Custom Amp
  218. Wiring variac
  219. 1SH29B russian miniature tube - useful for audio?
  220. Humming in PP EL84 Tubes aMP.
  221. Repurposing a Tube Reel to Reel
  222. YaQin MC-10L Vs ST70: Sound Quality
  223. Voltage VS. Amperage?
  224. 3 questions about 6B4g
  225. DIY OPT - are these good?
  226. Audio Research regulators
  227. 0C3 for lowering down the screens?
  228. radio like interference condition in SA-100
  229. PCL86 heater flash
  230. Tube powered subwoofer
  231. Anyone have experience with Shuguang 805A
  232. The emperor's new amplifier
  233. Power supply question:twin choke input?
  234. El-84 vs El-86
  235. Modifying Tektronix Type-E Plugin
  236. radio coming thru speakers.
  237. FM tube tuner
  238. diy el 34 se
  239. Transformers Specs for a 2x KT88 Amp
  240. 805 Positive or Negative Grid
  241. Point To Point, 100 percent, No Kit
  242. More line loads etc
  243. B300 C120 rectifier replacement.
  244. Triode simulation/emulation with solid state
  245. What is the driver circuit here?
  246. Dynaco Mark III
  247. ReCap- Heathkit AA-151 Help
  248. Hammond Chassis?
  249. How about an IXCP10M90 as a FETRON
  250. PUSH PULL SE ???

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