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  1. Ideas for a cheap 200mA tube rectified PSU
  2. Need help with tube rectifier
  3. Tube or Circuit Noise?
  4. JE Labs (Angela instr.) : your favorite 2A3 schematic ?
  5. Crack the Code Amp build 1000 Watt Tube Amplifier
  6. 12E1 in fixed bias - too much current!
  7. CD-DVD player vs Notebook-usb soundcard sensitivity issue
  8. photo of Knight KP-70 preamplifier for missing component
  9. heater wear sign?
  10. Musical Fidelty X-10D Clone
  11. 815 amp
  12. Jorgen Schou 31,5 OT connection
  13. Is there such a thing....
  14. Tube Rectifiers and Common Grounds
  15. vt4c.com copper tube socket mounts
  16. 1 Ohm Tap Output tranformers?
  17. Voltage Specs For Heaters-Is 2.4V Good Enough?
  18. Aikido with 5842
  19. Luxman MQ70
  20. Valve pre-amp schematic help needed
  21. valves' world - tossie Japan
  22. 211 amp , recognize the circuit?
  23. Tube Preamp: Remedy For Digital Glare?
  24. Tubelab SSE without tube rectifier
  25. Counterpoint 7A
  26. Low Z Out Dual Triode
  27. Push Pull circuit - controlling sensitivity
  28. Moto 3 channel to Maggy 175
  29. PMillett Landfall heatsink
  30. lower the gain
  31. KT88?
  32. Sphinx Project Fourteen help wanted
  33. will this work and looking for suggestions
  34. Squeal on shutdown
  35. Newbie to SRPP and Tubes , 1 question.
  36. Question about interconnect transformers
  37. another toy - el84 PP class A
  38. Problem with biasing - no voltage drop on a cathode resistor
  39. EL84 PP current fluctuating
  40. Aikido Preamp Questions (again)
  41. Amp caused crack
  42. OPT performances
  43. Hammond 125ESE in 2A3 SE : better substitutions ?
  44. Headphone Impedance and headphone amplifier
  45. Could this tube be good for audio ?
  46. Output Transformer for SE / headphone amp
  47. pioneer sm-b200a
  48. 12AT7 Tubes ?
  49. Gold Lion kt77 bias help?
  50. Need some bias control help
  51. Lafayette LA-224a/b modernization?
  52. Need help completing vintage 6L6 amp
  53. Direct Russian equivilent for 5687, is there one ?
  54. Attenuation for 0.5dBs
  55. Dynaco ST-120 Impedance Concern Martin Logan
  56. Some 1626 Darling Amp Questions
  57. Choosing a SE 2A3 shematic : hum as a criteria...
  58. Rectifier question, voltage across diode.
  59. Angela simple 2A3
  60. Cathode follower - resistor calculations/software
  61. Desperately Seeking OPT Covers
  62. Modified Tube Cricket Amp Questions
  63. Best sounding DIY amp kits for 45, 2A3 or 300B
  64. Pentode's screen voltage/current
  65. KT88 Cathode Current Runaway/Oscillations?
  66. O'netics, Electra Print: anyone have both?
  67. How to maximize power transfer in tube circuit designs, damping is not the question!
  68. Inexpensive 2.5k primary SET OPT with 90mA+ DC bias rating?
  69. 4p1L Ultralinear
  70. RH300B 12W with 1% THD
  71. This is where the adventure begins
  72. 12AU7 pre rebuild suggestions
  73. Subwoofer Channel on Tube Amp
  74. Changing input tube from 12ax7 to 6AU6A on OTL project
  75. Yaqin MC5881a
  76. Humming Sound from tube amp
  77. Level Five 2A3 SE schematic : opinions ?
  78. My screwup = free PCBs...
  79. New stuff on the website: A2 buffer, isolated current sensor
  80. 12.6vDC Heaters, looking for a shortcut
  81. Fisher 80-AZ bias milliamps?
  82. Can shed some light on this EL 34 schematic diagram
  83. Solid State Rectifier in Dynaco Tube Amp
  84. Big chassis designs!
  85. 12ax7 LP
  86. plitron output w/ cfb usage ideas
  87. 390 ohm should have been 390k ohm
  88. Advice sought re what tube power amp
  89. EL34 SED Winged C Black Prints: original??
  90. OPTx from Ogonowski
  91. Aikido cathode follower (ACF) with 12au7
  92. Ampeg vt60 tri ax (did it really exist?)
  93. SEP EL-34 to 6L6GC?
  94. Volume Pot Spec
  95. My Tube Pre-Amp Picking up an AM radio station?
  96. Philips 6SN7 GTA & GTB
  97. ST-120 Problem With Rectifier Tube
  98. New Yaqin VK-2100
  99. Electronic parts and sub-zero temperature
  100. Bendix 6384 as EL34: Experience anyone?
  101. Audioresearch LS2B schematic needed
  102. input noise - too simple - but need explaination
  103. Plate voltage with/without tube (for fine tune bias adjustemnt)
  104. Using trimmers / potentiometers to adjust tube operating points
  105. KT88 SED winged C tolerance tall for quad
  106. Power Transformer Tolerances
  107. 12E1 Ultra Linear
  108. Comparison KT150 versus KT120
  109. 6sn7: GT GTA GTB sono differences for HIFI
  110. Audio Research LS5 Power Supply Problem
  111. Vintage grundig vs. new Yaqin. Advice?
  112. 5AR4 PSU
  113. What tube is this ?
  114. Need Schematic
  115. Budget PP Iron: Transcendar or Edcor?
  116. Yaqin MC-10L buzz
  117. Transformer buzzing when filament section is loaded
  118. Grid Stopper v Grid Leak on el84
  119. 2.5V Heater Tranformer-Best to Use One Per Channel?
  120. Amp: KT88 push-pull shunt feedback output via p-channel fet
  121. My biggest fear....
  122. I've made an awful mess...
  123. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  124. HV scope use
  125. Kolster-Brandes er30
  126. Buzz that goes away when input grounded.
  127. Hovland HP-100 tube replacement
  128. Dynaco ST-120 Turn On Pop or Problem
  129. Grounding two channel preamp sharing a psu.
  130. Convert hybrid amp to pure tube output?
  131. Please Help me with this tubes
  132. resistor maximum voltage rating
  133. 211- 6e5p full amp. The first setps
  134. E810F and general pentodes design question
  135. Pop goes the bias cap.
  136. High Power Single Ended Triode, Design
  137. Yaqin MS-6V6 vs. Markhill MS-6V6
  138. Schematic please: Luxman MQ-70?
  139. Aikido tube preamp with Tortuga LDR volume control
  140. Type 37 tube preamp
  141. Figuring out a KT88 datasheet?
  142. Power supply 260V for tube preamp
  143. Aikido Tube with Tortuga volume control project
  144. Adding a pre out to amp
  145. One or two ECC82 for two channels (crosstalk)!
  146. Red Pilot (240)
  147. 77:1 Output Transformer Question
  148. Power transformer recommendation Kt88 SE and JE labs Riaa
  149. Tube output power for OPT calculation
  150. 6sn7 tube anode folower question?????
  151. Goldox 9300
  152. good quality/sounding preamp advice
  153. PL84 schematic question.
  154. YouTube Video: 12AX7 comparisons.
  155. How many volts ???
  156. Greetings all/ (newbie) Need Advice!
  157. Psud and Single Ended Amplifier
  158. Socket Combiniations
  159. From Potentiometer to Stepped Attenuator
  160. No need for bleed resistors on Fisher 90-T
  161. Sophia 300B+ carbon
  162. Capacitor Temperature
  163. PL519 amp SE
  164. C3g Headphone design - will this work?
  165. Luxman 2A3 amp SE
  166. Capacitor on Aikido Power Supply Sampling Circuit
  167. Well, what have I done now?
  168. Aikido CF cathode resistor?
  169. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  170. SET Cathode Biased vs. Fixed Bias?
  171. JAN6418 pre-amp advise
  172. SOHA II amp tripping
  173. 6JN6 LTspice model?
  174. unusual output transformers, what are they for?
  175. Cheap power amp kit with 6N2 + 6P3
  176. KT88 AMP I'm not sure about power supply
  177. buzz from tubes
  178. Good Power Supply??
  179. HK guitar amp - help with repair
  180. Audio Research SP6C
  181. Junk Audio Project (pics)
  182. SE SV83 Paralled Tube Amplifer
  183. Hum in SVP preamp circuit
  184. Advice/tips on tube preamplifier wanted
  185. Transformer Windfall. Now what?
  186. I am being cautious - need to install a ground plug
  187. My first scratch build (6AQ5 SE)....
  188. Pop, Pop, Pop, Pop, Pop
  189. what is this valve? and what is it for??
  190. Lazarus cascade basic preamp
  191. Seperate Power Supply Chassis and Grounding
  192. How To Solder Tips and Tricks
  193. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  194. PCL86 - Worth a try?
  195. Audio use 3D6/1299 ?
  196. How HOT should a LM317 get?
  197. KT88 amp questions
  198. Restoring a Motorola HS-1048A amp
  199. Please look at this schematic and tells me what have went wrong
  200. Lacking bass response after re-cap
  201. Generate a negative bias voltage?
  202. hammond 369ex instead of 269ex
  203. Recapped a pair of monoblocks
  204. Top Secret!
  205. Toggle or Rotary Switch for Phono Inputs
  206. Flexible tube (or SS) electronic XO
  207. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  208. Transformer revers use question
  209. Fixed bias, cathode feedback?
  210. spudnik, spudMiG ?
  211. I need the KT120 base dimensions
  212. Need help with chassis layout.
  213. tube amp ID ?
  214. GU50 filaments voltage!
  215. Does anybody have an RCA RS171 Schematic
  216. Opinions wanted: Low Z SE power supplies
  217. DC heaters, best way to bias ?
  218. Ignition coil as SE OPT
  219. Opt color code identification (Onetics)
  220. Drawback to Larger Capacity Output Transformer Than Required?
  221. Send me some pictures of your amps
  222. leak stereo 60
  223. B2 Spice V5.0
  224. Mains Fuse and Switch Best Practice
  225. Identify these vintage tube amp rivets
  226. RCA ORTHOPHONIC LMI-32216A manual copy needed
  227. Question on strange 6l6 schematic symbols
  228. Resistor value?
  229. Paper / plastic hybrid capacitor
  230. ST70 chassis polishing
  231. Octal to RCA
  232. KT120 plate load for 150+watts
  233. Need a copy of Aikido 5687 manual pdf
  234. Nutshell Raven Headphone amp with balanced I/O
  235. Bartolucci: beware of him !!!
  236. Finding plate resistance
  237. Pleides Tube only headphone amp
  238. I think I know what I want (seasoned advice)
  239. CCS filament supply vs inductors for DHT
  240. Cap outer foil low impedance help...
  241. Distorted low end SE micro amp
  242. LM3886 + ECC82/12AU7
  243. My LCR phono with HUM....
  244. Winter 2A3 SET project.
  245. 6BQ5 pp with LM317 ccs
  246. maratz 7 clone
  247. Music Angel pre-amplifier - few modifications
  248. Transformer Questions (1st Amp Project)
  249. Morgan Jones and PS Bypass Caps
  250. Ruby Tuby at 24V?

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