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  1. 390 ohm should have been 390k ohm
  2. Advice sought re what tube power amp
  3. EL34 SED Winged C Black Prints: original??
  4. OPTx from Ogonowski
  5. Aikido cathode follower (ACF) with 12au7
  6. Ampeg vt60 tri ax (did it really exist?)
  7. SEP EL-34 to 6L6GC?
  8. Volume Pot Spec
  9. My Tube Pre-Amp Picking up an AM radio station?
  10. Philips 6SN7 GTA & GTB
  11. ST-120 Problem With Rectifier Tube
  12. New Yaqin VK-2100
  13. Electronic parts and sub-zero temperature
  14. Bendix 6384 as EL34: Experience anyone?
  15. Audioresearch LS2B schematic needed
  16. input noise - too simple - but need explaination
  17. Plate voltage with/without tube (for fine tune bias adjustemnt)
  18. Using trimmers / potentiometers to adjust tube operating points
  19. KT88 SED winged C tolerance tall for quad
  20. Power Transformer Tolerances
  21. 12E1 Ultra Linear
  22. Comparison KT150 versus KT120
  23. 6sn7: GT GTA GTB sono differences for HIFI
  24. Audio Research LS5 Power Supply Problem
  25. Vintage grundig vs. new Yaqin. Advice?
  26. 5AR4 PSU
  27. What tube is this ?
  28. Need Schematic
  29. Budget PP Iron: Transcendar or Edcor?
  30. Yaqin MC-10L buzz
  31. Transformer buzzing when filament section is loaded
  32. Grid Stopper v Grid Leak on el84
  33. 2.5V Heater Tranformer-Best to Use One Per Channel?
  34. Amp: KT88 push-pull shunt feedback output via p-channel fet
  35. My biggest fear....
  36. I've made an awful mess...
  37. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  38. HV scope use
  39. Kolster-Brandes er30
  40. Buzz that goes away when input grounded.
  41. Hovland HP-100 tube replacement
  42. Dynaco ST-120 Turn On Pop or Problem
  43. Grounding two channel preamp sharing a psu.
  44. Convert hybrid amp to pure tube output?
  45. Please Help me with this tubes
  46. resistor maximum voltage rating
  47. 211- 6e5p full amp. The first setps
  48. E810F and general pentodes design question
  49. Pop goes the bias cap.
  50. High Power Single Ended Triode, Design
  51. Yaqin MS-6V6 vs. Markhill MS-6V6
  52. Schematic please: Luxman MQ-70?
  53. Aikido tube preamp with Tortuga LDR volume control
  54. Type 37 tube preamp
  55. Figuring out a KT88 datasheet?
  56. Power supply 260V for tube preamp
  57. Aikido Tube with Tortuga volume control project
  58. Adding a pre out to amp
  59. One or two ECC82 for two channels (crosstalk)!
  60. Red Pilot (240)
  61. 77:1 Output Transformer Question
  62. Power transformer recommendation Kt88 SE and JE labs Riaa
  63. Tube output power for OPT calculation
  64. 6sn7 tube anode folower question?????
  65. Goldox 9300
  66. good quality/sounding preamp advice
  67. PL84 schematic question.
  68. YouTube Video: 12AX7 comparisons.
  69. How many volts ???
  70. Greetings all/ (newbie) Need Advice!
  71. Psud and Single Ended Amplifier
  72. Socket Combiniations
  73. From Potentiometer to Stepped Attenuator
  74. No need for bleed resistors on Fisher 90-T
  75. Sophia 300B+ carbon
  76. Capacitor Temperature
  77. PL519 amp SE
  78. C3g Headphone design - will this work?
  79. Luxman 2A3 amp SE
  80. Capacitor on Aikido Power Supply Sampling Circuit
  81. Well, what have I done now?
  82. Aikido CF cathode resistor?
  83. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  84. SET Cathode Biased vs. Fixed Bias?
  85. JAN6418 pre-amp advise
  86. SOHA II amp tripping
  87. 6JN6 LTspice model?
  88. unusual output transformers, what are they for?
  89. Cheap power amp kit with 6N2 + 6P3
  90. KT88 AMP I'm not sure about power supply
  91. buzz from tubes
  92. Good Power Supply??
  93. HK guitar amp - help with repair
  94. Audio Research SP6C
  95. Junk Audio Project (pics)
  96. SE SV83 Paralled Tube Amplifer
  97. Hum in SVP preamp circuit
  98. Advice/tips on tube preamplifier wanted
  99. Transformer Windfall. Now what?
  100. I am being cautious - need to install a ground plug
  101. My first scratch build (6AQ5 SE)....
  102. Pop, Pop, Pop, Pop, Pop
  103. what is this valve? and what is it for??
  104. Lazarus cascade basic preamp
  105. Seperate Power Supply Chassis and Grounding
  106. How To Solder Tips and Tricks
  107. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  108. PCL86 - Worth a try?
  109. Audio use 3D6/1299 ?
  110. How HOT should a LM317 get?
  111. KT88 amp questions
  112. Restoring a Motorola HS-1048A amp
  113. Please look at this schematic and tells me what have went wrong
  114. Lacking bass response after re-cap
  115. Generate a negative bias voltage?
  116. hammond 369ex instead of 269ex
  117. Recapped a pair of monoblocks
  118. Top Secret!
  119. Toggle or Rotary Switch for Phono Inputs
  120. Flexible tube (or SS) electronic XO
  121. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  122. Transformer revers use question
  123. Fixed bias, cathode feedback?
  124. spudnik, spudMiG ?
  125. I need the KT120 base dimensions
  126. Need help with chassis layout.
  127. tube amp ID ?
  128. GU50 filaments voltage!
  129. Does anybody have an RCA RS171 Schematic
  130. Opinions wanted: Low Z SE power supplies
  131. DC heaters, best way to bias ?
  132. Ignition coil as SE OPT
  133. Opt color code identification (Onetics)
  134. Drawback to Larger Capacity Output Transformer Than Required?
  135. Send me some pictures of your amps
  136. leak stereo 60
  137. B2 Spice V5.0
  138. Mains Fuse and Switch Best Practice
  139. Identify these vintage tube amp rivets
  140. RCA ORTHOPHONIC LMI-32216A manual copy needed
  141. Question on strange 6l6 schematic symbols
  142. Resistor value?
  143. Paper / plastic hybrid capacitor
  144. ST70 chassis polishing
  145. Octal to RCA
  146. KT120 plate load for 150+watts
  147. Need a copy of Aikido 5687 manual pdf
  148. Nutshell Raven Headphone amp with balanced I/O
  149. Bartolucci: beware of him !!!
  150. Finding plate resistance
  151. Pleides Tube only headphone amp
  152. I think I know what I want (seasoned advice)
  153. CCS filament supply vs inductors for DHT
  154. Cap outer foil low impedance help...
  155. Distorted low end SE micro amp
  156. LM3886 + ECC82/12AU7
  157. My LCR phono with HUM....
  158. Winter 2A3 SET project.
  159. 6BQ5 pp with LM317 ccs
  160. maratz 7 clone
  161. Music Angel pre-amplifier - few modifications
  162. Transformer Questions (1st Amp Project)
  163. Morgan Jones and PS Bypass Caps
  164. Ruby Tuby at 24V?
  165. Budget Iron for Low-Power SET
  166. Output transformer mounting questions
  167. 3c24 preamp?
  168. Newb Q - JE Simple 2A3 as Monoblocks
  169. Vacuum tube amp design
  170. Counterpoint SA7.1 circuit question
  171. Variable Gain Control Topology
  172. Unknown amplifier, anyone recognice it?
  173. Harman Kardon "The Lute" A-220 - Repair manual?
  174. G2 input grid 6DQ6 push pull
  175. Schade SE 6550
  176. Heathkit aa-23 fix up
  177. 6SN7 Line Stage w/ Tone Controls
  178. Octal Heaven??
  179. how do i reach Chris the georgetown technician?
  180. mu follower bootstrap cap value
  181. POLL: The Legendary Williamson Amp Modified By SY
  182. 5Y3 PSU Question
  183. jolida 302b sweet sounding amp vs Audio Innovations 500
  184. MFA M120 any personal experience values and reviews?
  185. Scott 233D one channel bad - Next Project?
  186. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  187. This Look Right?
  188. SIMPLE KIT with step by step instruction
  189. Ultra Simple PP ECC99?
  190. Heathkit Audio Analyzer
  191. The Best Valve Amp Design In Modern Time: Poll Candidates
  192. Current Requirements for Power Tubes
  193. Thermionic generator (Triode) appears to be real this time...
  194. Choosing Tube + OPT for preamp
  195. My first preamp with tubes
  196. Another New Guy Starting With %@&?~ Chinese PCB
  197. Question about output transformers.
  198. NEETS & Kirchhoff , I'm stuck
  199. Reviving a late 50's el84-based hifi
  200. Need a 7K a-a
  201. Tube ID
  202. Anyone know what these are?
  203. Let's Talk About Grounding
  204. Tube Pre Amp DIY Schematic
  205. Rectifier choice
  206. power transformer fo single tube ecl82 amplifier
  207. Today's Version of The Williamson Amp
  208. what's wrong with my calculations?
  209. Phono stage design considerations part 1: choosing 1st stage tube
  210. Can anyone suggest a practical use for this gauge on a tube amp
  211. Completed my 829 PPP w/ pmillet's driver pcb's.
  212. adding input transformer to Sony sra-2 tube preamp
  213. 6P45S 50W mono block tube amplifier
  214. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  215. curious answer from CommonSense Audio
  216. Local Feedback for Push Pull Pentode
  217. Hickok Tv-7D/U A Setting not working
  218. Exotic interstage transformers
  219. DAC & Tube Preamp, Elevated Heater Question
  220. This Schematic Sounds Great
  221. Most Exotic MM phono preamplifier
  222. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  223. Strange noises on my Aikido power on
  224. lost capacitance
  225. Best SE KT66 schematic?
  226. Mixing old and new tubes
  227. Mullard 3 Tube 3 watt amplifier Question
  228. Darling Pre-amplifier using WCF for 1626's
  229. Is my tube broken? Which one should replace it?
  230. What Exactly Is Voltage Drop
  231. simplex (6c33c se amp) and stabilized current
  232. Transformers with dual primaries?
  233. Building the VTA, tubes4hifi PH16 Phono Stage
  234. K&E Preamplifier
  235. 12ax7:top psvane or top shuguang?
  236. Software To Help Design Tube Amplifier
  237. How can I drop B+ Voltage
  238. Eico HF-60's power supply.
  239. Need help with Output Transformer for EL84
  240. Where to reference filaments to ground?
  241. Maratnz 9 irons
  242. Noisy re-purposed MOT
  243. Mullard HQ Stereo Amp - Transformers Question
  244. C3g triode-strapped linearity question
  245. Making tube Rp disappear now
  246. 6E5P Connection Question
  247. Push Pull stereo amp bridged to monoblock operation
  248. Mr Blohbaum's Multiplied Transconductance Amp
  249. Vintage output transformer ID
  250. Getting Rid of Some Stickys

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