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  1. will this work and looking for suggestions
  2. Squeal on shutdown
  3. Newbie to SRPP and Tubes , 1 question.
  4. Question about interconnect transformers
  5. another toy - el84 PP class A
  6. Problem with biasing - no voltage drop on a cathode resistor
  7. EL84 PP current fluctuating
  8. Aikido Preamp Questions (again)
  9. Amp caused crack
  10. OPT performances
  11. Hammond 125ESE in 2A3 SE : better substitutions ?
  12. Headphone Impedance and headphone amplifier
  13. Could this tube be good for audio ?
  14. Output Transformer for SE / headphone amp
  15. pioneer sm-b200a
  16. 12AT7 Tubes ?
  17. Gold Lion kt77 bias help?
  18. Need some bias control help
  19. Lafayette LA-224a/b modernization?
  20. Need help completing vintage 6L6 amp
  21. Direct Russian equivilent for 5687, is there one ?
  22. Attenuation for 0.5dBs
  23. Dynaco ST-120 Impedance Concern Martin Logan
  24. Some 1626 Darling Amp Questions
  25. Choosing a SE 2A3 shematic : hum as a criteria...
  26. Rectifier question, voltage across diode.
  27. Angela simple 2A3
  28. Cathode follower - resistor calculations/software
  29. Desperately Seeking OPT Covers
  30. Modified Tube Cricket Amp Questions
  31. Best sounding DIY amp kits for 45, 2A3 or 300B
  32. Pentode's screen voltage/current
  33. KT88 Cathode Current Runaway/Oscillations?
  34. O'netics, Electra Print: anyone have both?
  35. How to maximize power transfer in tube circuit designs, damping is not the question!
  36. Inexpensive 2.5k primary SET OPT with 90mA+ DC bias rating?
  37. 4p1L Ultralinear
  38. RH300B 12W with 1% THD
  39. This is where the adventure begins
  40. 12AU7 pre rebuild suggestions
  41. Subwoofer Channel on Tube Amp
  42. Changing input tube from 12ax7 to 6AU6A on OTL project
  43. Yaqin MC5881a
  44. Humming Sound from tube amp
  45. Level Five 2A3 SE schematic : opinions ?
  46. My screwup = free PCBs...
  47. New stuff on the website: A2 buffer, isolated current sensor
  48. 12.6vDC Heaters, looking for a shortcut
  49. Fisher 80-AZ bias milliamps?
  50. Can shed some light on this EL 34 schematic diagram
  51. Solid State Rectifier in Dynaco Tube Amp
  52. Big chassis designs!
  53. 12ax7 LP
  54. plitron output w/ cfb usage ideas
  55. 390 ohm should have been 390k ohm
  56. Advice sought re what tube power amp
  57. EL34 SED Winged C Black Prints: original??
  58. OPTx from Ogonowski
  59. Aikido cathode follower (ACF) with 12au7
  60. SEP EL-34 to 6L6GC?
  61. Volume Pot Spec
  62. My Tube Pre-Amp Picking up an AM radio station?
  63. Philips 6SN7 GTA & GTB
  64. ST-120 Problem With Rectifier Tube
  65. New Yaqin VK-2100
  66. Electronic parts and sub-zero temperature
  67. Bendix 6384 as EL34: Experience anyone?
  68. Audioresearch LS2B schematic needed
  69. input noise - too simple - but need explaination
  70. Plate voltage with/without tube (for fine tune bias adjustemnt)
  71. Using trimmers / potentiometers to adjust tube operating points
  72. KT88 SED winged C tolerance tall for quad
  73. Power Transformer Tolerances
  74. 12E1 Ultra Linear
  75. Comparison KT150 versus KT120
  76. 6sn7: GT GTA GTB sono differences for HIFI
  77. Audio Research LS5 Power Supply Problem
  78. Vintage grundig vs. new Yaqin. Advice?
  79. 5AR4 PSU
  80. What tube is this ?
  81. Need Schematic
  82. Budget PP Iron: Transcendar or Edcor?
  83. Yaqin MC-10L buzz
  84. Transformer buzzing when filament section is loaded
  85. Grid Stopper v Grid Leak on el84
  86. 2.5V Heater Tranformer-Best to Use One Per Channel?
  87. Amp: KT88 push-pull shunt feedback output via p-channel fet
  88. My biggest fear....
  89. I've made an awful mess...
  90. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  91. HV scope use
  92. Kolster-Brandes er30
  93. Buzz that goes away when input grounded.
  94. Hovland HP-100 tube replacement
  95. Dynaco ST-120 Turn On Pop or Problem
  96. Grounding two channel preamp sharing a psu.
  97. Convert hybrid amp to pure tube output?
  98. Please Help me with this tubes
  99. resistor maximum voltage rating
  100. 211- 6e5p full amp. The first setps
  101. E810F and general pentodes design question
  102. Pop goes the bias cap.
  103. High Power Single Ended Triode, Design
  104. Yaqin MS-6V6 vs. Markhill MS-6V6
  105. Schematic please: Luxman MQ-70?
  106. Aikido tube preamp with Tortuga LDR volume control
  107. Type 37 tube preamp
  108. Figuring out a KT88 datasheet?
  109. Power supply 260V for tube preamp
  110. Aikido Tube with Tortuga volume control project
  111. Adding a pre out to amp
  112. One or two ECC82 for two channels (crosstalk)!
  113. Red Pilot (240)
  114. 77:1 Output Transformer Question
  115. Power transformer recommendation Kt88 SE and JE labs Riaa
  116. Tube output power for OPT calculation
  117. 6sn7 tube anode folower question?????
  118. Goldox 9300
  119. good quality/sounding preamp advice
  120. PL84 schematic question.
  121. YouTube Video: 12AX7 comparisons.
  122. How many volts ???
  123. Greetings all/ (newbie) Need Advice!
  124. Psud and Single Ended Amplifier
  125. Socket Combiniations
  126. From Potentiometer to Stepped Attenuator
  127. No need for bleed resistors on Fisher 90-T
  128. Sophia 300B+ carbon
  129. Capacitor Temperature
  130. PL519 amp SE
  131. C3g Headphone design - will this work?
  132. Luxman 2A3 amp SE
  133. Capacitor on Aikido Power Supply Sampling Circuit
  134. Well, what have I done now?
  135. Aikido CF cathode resistor?
  136. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  137. SET Cathode Biased vs. Fixed Bias?
  138. JAN6418 pre-amp advise
  139. SOHA II amp tripping
  140. 6JN6 LTspice model?
  141. unusual output transformers, what are they for?
  142. Cheap power amp kit with 6N2 + 6P3
  143. KT88 AMP I'm not sure about power supply
  144. buzz from tubes
  145. Good Power Supply??
  146. Audio Research SP6C
  147. Junk Audio Project (pics)
  148. SE SV83 Paralled Tube Amplifer
  149. Hum in SVP preamp circuit
  150. Advice/tips on tube preamplifier wanted
  151. Transformer Windfall. Now what?
  152. I am being cautious - need to install a ground plug
  153. My first scratch build (6AQ5 SE)....
  154. Pop, Pop, Pop, Pop, Pop
  155. what is this valve? and what is it for??
  156. Lazarus cascade basic preamp
  157. Seperate Power Supply Chassis and Grounding
  158. How To Solder Tips and Tricks
  159. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  160. PCL86 - Worth a try?
  161. Audio use 3D6/1299 ?
  162. How HOT should a LM317 get?
  163. KT88 amp questions
  164. Restoring a Motorola HS-1048A amp
  165. Please look at this schematic and tells me what have went wrong
  166. Lacking bass response after re-cap
  167. Generate a negative bias voltage?
  168. hammond 369ex instead of 269ex
  169. Recapped a pair of monoblocks
  170. Top Secret!
  171. Toggle or Rotary Switch for Phono Inputs
  172. Flexible tube (or SS) electronic XO
  173. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  174. Transformer revers use question
  175. Fixed bias, cathode feedback?
  176. spudnik, spudMiG ?
  177. I need the KT120 base dimensions
  178. Need help with chassis layout.
  179. tube amp ID ?
  180. GU50 filaments voltage!
  181. Does anybody have an RCA RS171 Schematic
  182. Opinions wanted: Low Z SE power supplies
  183. DC heaters, best way to bias ?
  184. Ignition coil as SE OPT
  185. Opt color code identification (Onetics)
  186. Drawback to Larger Capacity Output Transformer Than Required?
  187. Send me some pictures of your amps
  188. leak stereo 60
  189. B2 Spice V5.0
  190. Mains Fuse and Switch Best Practice
  191. Identify these vintage tube amp rivets
  192. RCA ORTHOPHONIC LMI-32216A manual copy needed
  193. Question on strange 6l6 schematic symbols
  194. Resistor value?
  195. Paper / plastic hybrid capacitor
  196. ST70 chassis polishing
  197. Octal to RCA
  198. KT120 plate load for 150+watts
  199. Need a copy of Aikido 5687 manual pdf
  200. Nutshell Raven Headphone amp with balanced I/O
  201. Bartolucci: beware of him !!!
  202. Finding plate resistance
  203. Pleides Tube only headphone amp
  204. I think I know what I want (seasoned advice)
  205. CCS filament supply vs inductors for DHT
  206. Cap outer foil low impedance help...
  207. Distorted low end SE micro amp
  208. LM3886 + ECC82/12AU7
  209. My LCR phono with HUM....
  210. Winter 2A3 SET project.
  211. 6BQ5 pp with LM317 ccs
  212. Marantz 7 clone
  213. Music Angel pre-amplifier - few modifications
  214. Transformer Questions (1st Amp Project)
  215. Morgan Jones and PS Bypass Caps
  216. Ruby Tuby at 24V?
  217. Budget Iron for Low-Power SET
  218. Output transformer mounting questions
  219. 3c24 preamp?
  220. Newb Q - JE Simple 2A3 as Monoblocks
  221. Vacuum tube amp design
  222. Counterpoint SA7.1 circuit question
  223. Variable Gain Control Topology
  224. Unknown amplifier, anyone recognice it?
  225. Harman Kardon "The Lute" A-220 - Repair manual?
  226. G2 input grid 6DQ6 push pull
  227. Schade SE 6550
  228. Heathkit aa-23 fix up
  229. 6SN7 Line Stage w/ Tone Controls
  230. Octal Heaven??
  231. how do i reach Chris the georgetown technician?
  232. mu follower bootstrap cap value
  233. POLL: The Legendary Williamson Amp Modified By SY
  234. 5Y3 PSU Question
  235. jolida 302b sweet sounding amp vs Audio Innovations 500
  236. MFA M120 any personal experience values and reviews?
  237. Scott 233D one channel bad - Next Project?
  238. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  239. This Look Right?
  240. SIMPLE KIT with step by step instruction
  241. Ultra Simple PP ECC99?
  242. Heathkit Audio Analyzer
  243. The Best Valve Amp Design In Modern Time: Poll Candidates
  244. Current Requirements for Power Tubes
  245. Thermionic generator (Triode) appears to be real this time...
  246. Choosing Tube + OPT for preamp
  247. My first preamp with tubes
  248. Another New Guy Starting With %@&?~ Chinese PCB
  249. Question about output transformers.
  250. NEETS & Kirchhoff , I'm stuck

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