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  1. Transformer buzzing when filament section is loaded
  2. Grid Stopper v Grid Leak on el84
  3. 2.5V Heater Tranformer-Best to Use One Per Channel?
  4. Amp: KT88 push-pull shunt feedback output via p-channel fet
  5. My biggest fear....
  6. I've made an awful mess...
  7. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  8. HV scope use
  9. Kolster-Brandes er30
  10. Buzz that goes away when input grounded.
  11. Hovland HP-100 tube replacement
  12. Dynaco ST-120 Turn On Pop or Problem
  13. Grounding two channel preamp sharing a psu.
  14. Convert hybrid amp to pure tube output?
  15. Please Help me with this tubes
  16. resistor maximum voltage rating
  17. 211- 6e5p full amp. The first setps
  18. E810F and general pentodes design question
  19. Pop goes the bias cap.
  20. High Power Single Ended Triode, Design
  21. Yaqin MS-6V6 vs. Markhill MS-6V6
  22. Schematic please: Luxman MQ-70?
  23. Aikido tube preamp with Tortuga LDR volume control
  24. Type 37 tube preamp
  25. Figuring out a KT88 datasheet?
  26. Power supply 260V for tube preamp
  27. Aikido Tube with Tortuga volume control project
  28. Adding a pre out to amp
  29. One or two ECC82 for two channels (crosstalk)!
  30. Red Pilot (240)
  31. 77:1 Output Transformer Question
  32. Power transformer recommendation Kt88 SE and JE labs Riaa
  33. Tube output power for OPT calculation
  34. 6sn7 tube anode folower question?????
  35. Goldox 9300
  36. good quality/sounding preamp advice
  37. PL84 schematic question.
  38. YouTube Video: 12AX7 comparisons.
  39. How many volts ???
  40. Greetings all/ (newbie) Need Advice!
  41. Psud and Single Ended Amplifier
  42. Socket Combiniations
  43. From Potentiometer to Stepped Attenuator
  44. No need for bleed resistors on Fisher 90-T
  45. Sophia 300B+ carbon
  46. Capacitor Temperature
  47. PL519 amp SE
  48. C3g Headphone design - will this work?
  49. Luxman 2A3 amp SE
  50. Capacitor on Aikido Power Supply Sampling Circuit
  51. Well, what have I done now?
  52. Aikido CF cathode resistor?
  53. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  54. SET Cathode Biased vs. Fixed Bias?
  55. JAN6418 pre-amp advise
  56. SOHA II amp tripping
  57. 6JN6 LTspice model?
  58. unusual output transformers, what are they for?
  59. Cheap power amp kit with 6N2 + 6P3
  60. KT88 AMP I'm not sure about power supply
  61. buzz from tubes
  62. Good Power Supply??
  63. HK guitar amp - help with repair
  64. Audio Research SP6C
  65. Junk Audio Project (pics)
  66. SE SV83 Paralled Tube Amplifer
  67. Hum in SVP preamp circuit
  68. Advice/tips on tube preamplifier wanted
  69. Transformer Windfall. Now what?
  70. I am being cautious - need to install a ground plug
  71. My first scratch build (6AQ5 SE)....
  72. Pop, Pop, Pop, Pop, Pop
  73. what is this valve? and what is it for??
  74. Lazarus cascade basic preamp
  75. Seperate Power Supply Chassis and Grounding
  76. How To Solder Tips and Tricks
  77. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  78. PCL86 - Worth a try?
  79. Audio use 3D6/1299 ?
  80. How HOT should a LM317 get?
  81. KT88 amp questions
  82. Restoring a Motorola HS-1048A amp
  83. Please look at this schematic and tells me what have went wrong
  84. Lacking bass response after re-cap
  85. Generate a negative bias voltage?
  86. hammond 369ex instead of 269ex
  87. Recapped a pair of monoblocks
  88. Top Secret!
  89. Toggle or Rotary Switch for Phono Inputs
  90. Flexible tube (or SS) electronic XO
  91. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  92. Transformer revers use question
  93. Fixed bias, cathode feedback?
  94. spudnik, spudMiG ?
  95. I need the KT120 base dimensions
  96. Need help with chassis layout.
  97. tube amp ID ?
  98. GU50 filaments voltage!
  99. Does anybody have an RCA RS171 Schematic
  100. Opinions wanted: Low Z SE power supplies
  101. DC heaters, best way to bias ?
  102. Ignition coil as SE OPT
  103. Opt color code identification (Onetics)
  104. Drawback to Larger Capacity Output Transformer Than Required?
  105. Send me some pictures of your amps
  106. leak stereo 60
  107. B2 Spice V5.0
  108. Mains Fuse and Switch Best Practice
  109. Identify these vintage tube amp rivets
  110. RCA ORTHOPHONIC LMI-32216A manual copy needed
  111. Question on strange 6l6 schematic symbols
  112. Resistor value?
  113. Paper / plastic hybrid capacitor
  114. ST70 chassis polishing
  115. Octal to RCA
  116. KT120 plate load for 150+watts
  117. Need a copy of Aikido 5687 manual pdf
  118. Nutshell Raven Headphone amp with balanced I/O
  119. Bartolucci: beware of him !!!
  120. Finding plate resistance
  121. Pleides Tube only headphone amp
  122. I think I know what I want (seasoned advice)
  123. CCS filament supply vs inductors for DHT
  124. Cap outer foil low impedance help...
  125. Distorted low end SE micro amp
  126. LM3886 + ECC82/12AU7
  127. My LCR phono with HUM....
  128. Winter 2A3 SET project.
  129. 6BQ5 pp with LM317 ccs
  130. maratz 7 clone
  131. Music Angel pre-amplifier - few modifications
  132. Transformer Questions (1st Amp Project)
  133. Morgan Jones and PS Bypass Caps
  134. Ruby Tuby at 24V?
  135. Budget Iron for Low-Power SET
  136. Output transformer mounting questions
  137. 3c24 preamp?
  138. Newb Q - JE Simple 2A3 as Monoblocks
  139. Vacuum tube amp design
  140. Counterpoint SA7.1 circuit question
  141. Variable Gain Control Topology
  142. Unknown amplifier, anyone recognice it?
  143. Harman Kardon "The Lute" A-220 - Repair manual?
  144. G2 input grid 6DQ6 push pull
  145. Schade SE 6550
  146. Heathkit aa-23 fix up
  147. 6SN7 Line Stage w/ Tone Controls
  148. Octal Heaven??
  149. how do i reach Chris the georgetown technician?
  150. mu follower bootstrap cap value
  151. POLL: The Legendary Williamson Amp Modified By SY
  152. 5Y3 PSU Question
  153. jolida 302b sweet sounding amp vs Audio Innovations 500
  154. MFA M120 any personal experience values and reviews?
  155. Scott 233D one channel bad - Next Project?
  156. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  157. This Look Right?
  158. SIMPLE KIT with step by step instruction
  159. Ultra Simple PP ECC99?
  160. Heathkit Audio Analyzer
  161. The Best Valve Amp Design In Modern Time: Poll Candidates
  162. Current Requirements for Power Tubes
  163. Thermionic generator (Triode) appears to be real this time...
  164. Choosing Tube + OPT for preamp
  165. My first preamp with tubes
  166. Another New Guy Starting With %@&?~ Chinese PCB
  167. Question about output transformers.
  168. NEETS & Kirchhoff , I'm stuck
  169. Reviving a late 50's el84-based hifi
  170. Need a 7K a-a
  171. Tube ID
  172. Anyone know what these are?
  173. Let's Talk About Grounding
  174. Tube Pre Amp DIY Schematic
  175. Rectifier choice
  176. power transformer fo single tube ecl82 amplifier
  177. Today's Version of The Williamson Amp
  178. what's wrong with my calculations?
  179. Phono stage design considerations part 1: choosing 1st stage tube
  180. Can anyone suggest a practical use for this gauge on a tube amp
  181. Completed my 829 PPP w/ pmillet's driver pcb's.
  182. adding input transformer to Sony sra-2 tube preamp
  183. 6P45S 50W mono block tube amplifier
  184. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  185. curious answer from CommonSense Audio
  186. Local Feedback for Push Pull Pentode
  187. Hickok Tv-7D/U A Setting not working
  188. Exotic interstage transformers
  189. DAC & Tube Preamp, Elevated Heater Question
  190. This Schematic Sounds Great
  191. Most Exotic MM phono preamplifier
  192. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  193. Strange noises on my Aikido power on
  194. lost capacitance
  195. Best SE KT66 schematic?
  196. Mixing old and new tubes
  197. Mullard 3 Tube 3 watt amplifier Question
  198. Darling Pre-amplifier using WCF for 1626's
  199. Is my tube broken? Which one should replace it?
  200. What Exactly Is Voltage Drop
  201. simplex (6c33c se amp) and stabilized current
  202. Transformers with dual primaries?
  203. Building the VTA, tubes4hifi PH16 Phono Stage
  204. K&E Preamplifier
  205. 12ax7:top psvane or top shuguang?
  206. Software To Help Design Tube Amplifier
  207. How can I drop B+ Voltage
  208. Eico HF-60's power supply.
  209. Need help with Output Transformer for EL84
  210. Where to reference filaments to ground?
  211. Maratnz 9 irons
  212. Noisy re-purposed MOT
  213. Mullard HQ Stereo Amp - Transformers Question
  214. C3g triode-strapped linearity question
  215. Making tube Rp disappear now
  216. 6E5P Connection Question
  217. Push Pull stereo amp bridged to monoblock operation
  218. Mr Blohbaum's Multiplied Transconductance Amp
  219. Vintage output transformer ID
  220. Getting Rid of Some Stickys
  221. Grid is Referenced To Ground through resistor? WHAT?
  222. Problem with CCSIC in Tubelab SE
  223. AP testing of the 6L6 SE
  224. output impedance
  225. 11BM8 heater wiring question
  226. Lower AC ripple on one side of coupling cap than the other side?
  227. HELP!! K12G Valve kit transformer
  228. 4 x EL34 or 2 x 6550 in a pp amp
  229. 5965 Telefunken tube U mh CO label ?
  230. 845 IT couple amp
  231. What makes an output tube "run away"
  232. P. Millett Engineers Amplifier
  233. Biasing problem
  234. Direct coupled driver stage - bias design
  235. Monoblock project
  236. Series DC Heater chain
  237. Tranformer advice for small powered amp.
  238. Circuit for testing tube/valve - Help!
  239. new Tubes for MHZS 33
  240. Teeny Tiny Spud
  241. Paging Andy Bartha
  242. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  243. aikido octal all-in-one manual
  244. Conrad Johnson MV75 help needed
  245. Leak tl12+ ECC81
  246. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  247. Amperex AX569
  248. Marconi tube ID help
  249. ST-70 Input Stage, Explained For Extreme Beginners
  250. heaters connected to cathode?!

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