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

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