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  1. Musical Fidelty X-10D Clone
  2. 815 amp
  3. Jorgen Schou 31,5 OT connection
  4. Is there such a thing....
  5. Tube Rectifiers and Common Grounds
  6. vt4c.com copper tube socket mounts
  7. 1 Ohm Tap Output tranformers?
  8. Voltage Specs For Heaters-Is 2.4V Good Enough?
  9. Aikido with 5842
  10. Luxman MQ70
  11. Valve pre-amp schematic help needed
  12. valves' world - tossie Japan
  13. 211 amp , recognize the circuit?
  14. Tube Preamp: Remedy For Digital Glare?
  15. Tubelab SSE without tube rectifier
  16. Counterpoint 7A
  17. Low Z Out Dual Triode
  18. Push Pull circuit - controlling sensitivity
  19. Moto 3 channel to Maggy 175
  20. PMillett Landfall heatsink
  21. lower the gain
  22. KT88?
  23. Sphinx Project Fourteen help wanted
  24. will this work and looking for suggestions
  25. Squeal on shutdown
  26. Newbie to SRPP and Tubes , 1 question.
  27. Question about interconnect transformers
  28. another toy - el84 PP class A
  29. Problem with biasing - no voltage drop on a cathode resistor
  30. EL84 PP current fluctuating
  31. Aikido Preamp Questions (again)
  32. Amp caused crack
  33. OPT performances
  34. Hammond 125ESE in 2A3 SE : better substitutions ?
  35. Headphone Impedance and headphone amplifier
  36. Could this tube be good for audio ?
  37. Output Transformer for SE / headphone amp
  38. pioneer sm-b200a
  39. 12AT7 Tubes ?
  40. Gold Lion kt77 bias help?
  41. Need some bias control help
  42. Lafayette LA-224a/b modernization?
  43. Need help completing vintage 6L6 amp
  44. Direct Russian equivilent for 5687, is there one ?
  45. Attenuation for 0.5dBs
  46. Dynaco ST-120 Impedance Concern Martin Logan
  47. Some 1626 Darling Amp Questions
  48. Choosing a SE 2A3 shematic : hum as a criteria...
  49. Rectifier question, voltage across diode.
  50. Angela simple 2A3
  51. Cathode follower - resistor calculations/software
  52. Desperately Seeking OPT Covers
  53. Modified Tube Cricket Amp Questions
  54. Best sounding DIY amp kits for 45, 2A3 or 300B
  55. Pentode's screen voltage/current
  56. KT88 Cathode Current Runaway/Oscillations?
  57. O'netics, Electra Print: anyone have both?
  58. How to maximize power transfer in tube circuit designs, damping is not the question!
  59. Inexpensive 2.5k primary SET OPT with 90mA+ DC bias rating?
  60. 4p1L Ultralinear
  61. RH300B 12W with 1% THD
  62. This is where the adventure begins
  63. 12AU7 pre rebuild suggestions
  64. Subwoofer Channel on Tube Amp
  65. Changing input tube from 12ax7 to 6AU6A on OTL project
  66. Yaqin MC5881a
  67. Humming Sound from tube amp
  68. Level Five 2A3 SE schematic : opinions ?
  69. My screwup = free PCBs...
  70. New stuff on the website: A2 buffer, isolated current sensor
  71. 12.6vDC Heaters, looking for a shortcut
  72. Fisher 80-AZ bias milliamps?
  73. Can shed some light on this EL 34 schematic diagram
  74. Solid State Rectifier in Dynaco Tube Amp
  75. Big chassis designs!
  76. 12ax7 LP
  77. plitron output w/ cfb usage ideas
  78. 390 ohm should have been 390k ohm
  79. Advice sought re what tube power amp
  80. EL34 SED Winged C Black Prints: original??
  81. OPTx from Ogonowski
  82. Aikido cathode follower (ACF) with 12au7
  83. Ampeg vt60 tri ax (did it really exist?)
  84. SEP EL-34 to 6L6GC?
  85. Volume Pot Spec
  86. My Tube Pre-Amp Picking up an AM radio station?
  87. Philips 6SN7 GTA & GTB
  88. ST-120 Problem With Rectifier Tube
  89. New Yaqin VK-2100
  90. Electronic parts and sub-zero temperature
  91. Bendix 6384 as EL34: Experience anyone?
  92. Audioresearch LS2B schematic needed
  93. input noise - too simple - but need explaination
  94. Plate voltage with/without tube (for fine tune bias adjustemnt)
  95. Using trimmers / potentiometers to adjust tube operating points
  96. KT88 SED winged C tolerance tall for quad
  97. Power Transformer Tolerances
  98. 12E1 Ultra Linear
  99. Comparison KT150 versus KT120
  100. 6sn7: GT GTA GTB sono differences for HIFI
  101. Audio Research LS5 Power Supply Problem
  102. Vintage grundig vs. new Yaqin. Advice?
  103. 5AR4 PSU
  104. What tube is this ?
  105. Need Schematic
  106. Budget PP Iron: Transcendar or Edcor?
  107. Yaqin MC-10L buzz
  108. Transformer buzzing when filament section is loaded
  109. Grid Stopper v Grid Leak on el84
  110. 2.5V Heater Tranformer-Best to Use One Per Channel?
  111. Amp: KT88 push-pull shunt feedback output via p-channel fet
  112. My biggest fear....
  113. I've made an awful mess...
  114. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  115. HV scope use
  116. Kolster-Brandes er30
  117. Buzz that goes away when input grounded.
  118. Hovland HP-100 tube replacement
  119. Dynaco ST-120 Turn On Pop or Problem
  120. Grounding two channel preamp sharing a psu.
  121. Convert hybrid amp to pure tube output?
  122. Please Help me with this tubes
  123. resistor maximum voltage rating
  124. 211- 6e5p full amp. The first setps
  125. E810F and general pentodes design question
  126. Pop goes the bias cap.
  127. High Power Single Ended Triode, Design
  128. Yaqin MS-6V6 vs. Markhill MS-6V6
  129. Schematic please: Luxman MQ-70?
  130. Aikido tube preamp with Tortuga LDR volume control
  131. Type 37 tube preamp
  132. Figuring out a KT88 datasheet?
  133. Power supply 260V for tube preamp
  134. Aikido Tube with Tortuga volume control project
  135. Adding a pre out to amp
  136. One or two ECC82 for two channels (crosstalk)!
  137. Red Pilot (240)
  138. 77:1 Output Transformer Question
  139. Power transformer recommendation Kt88 SE and JE labs Riaa
  140. Tube output power for OPT calculation
  141. 6sn7 tube anode folower question?????
  142. Goldox 9300
  143. good quality/sounding preamp advice
  144. PL84 schematic question.
  145. YouTube Video: 12AX7 comparisons.
  146. How many volts ???
  147. Greetings all/ (newbie) Need Advice!
  148. Psud and Single Ended Amplifier
  149. Socket Combiniations
  150. From Potentiometer to Stepped Attenuator
  151. No need for bleed resistors on Fisher 90-T
  152. Sophia 300B+ carbon
  153. Capacitor Temperature
  154. PL519 amp SE
  155. C3g Headphone design - will this work?
  156. Luxman 2A3 amp SE
  157. Capacitor on Aikido Power Supply Sampling Circuit
  158. Well, what have I done now?
  159. Aikido CF cathode resistor?
  160. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  161. SET Cathode Biased vs. Fixed Bias?
  162. JAN6418 pre-amp advise
  163. SOHA II amp tripping
  164. 6JN6 LTspice model?
  165. unusual output transformers, what are they for?
  166. Cheap power amp kit with 6N2 + 6P3
  167. KT88 AMP I'm not sure about power supply
  168. buzz from tubes
  169. Good Power Supply??
  170. HK guitar amp - help with repair
  171. Audio Research SP6C
  172. Junk Audio Project (pics)
  173. SE SV83 Paralled Tube Amplifer
  174. Hum in SVP preamp circuit
  175. Advice/tips on tube preamplifier wanted
  176. Transformer Windfall. Now what?
  177. I am being cautious - need to install a ground plug
  178. My first scratch build (6AQ5 SE)....
  179. Pop, Pop, Pop, Pop, Pop
  180. what is this valve? and what is it for??
  181. Lazarus cascade basic preamp
  182. Seperate Power Supply Chassis and Grounding
  183. How To Solder Tips and Tricks
  184. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  185. PCL86 - Worth a try?
  186. Audio use 3D6/1299 ?
  187. How HOT should a LM317 get?
  188. KT88 amp questions
  189. Restoring a Motorola HS-1048A amp
  190. Please look at this schematic and tells me what have went wrong
  191. Lacking bass response after re-cap
  192. Generate a negative bias voltage?
  193. hammond 369ex instead of 269ex
  194. Recapped a pair of monoblocks
  195. Top Secret!
  196. Toggle or Rotary Switch for Phono Inputs
  197. Flexible tube (or SS) electronic XO
  198. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  199. Transformer revers use question
  200. Fixed bias, cathode feedback?
  201. spudnik, spudMiG ?
  202. I need the KT120 base dimensions
  203. Need help with chassis layout.
  204. tube amp ID ?
  205. GU50 filaments voltage!
  206. Does anybody have an RCA RS171 Schematic
  207. Opinions wanted: Low Z SE power supplies
  208. DC heaters, best way to bias ?
  209. Ignition coil as SE OPT
  210. Opt color code identification (Onetics)
  211. Drawback to Larger Capacity Output Transformer Than Required?
  212. Send me some pictures of your amps
  213. leak stereo 60
  214. B2 Spice V5.0
  215. Mains Fuse and Switch Best Practice
  216. Identify these vintage tube amp rivets
  217. RCA ORTHOPHONIC LMI-32216A manual copy needed
  218. Question on strange 6l6 schematic symbols
  219. Resistor value?
  220. Paper / plastic hybrid capacitor
  221. ST70 chassis polishing
  222. Octal to RCA
  223. KT120 plate load for 150+watts
  224. Need a copy of Aikido 5687 manual pdf
  225. Nutshell Raven Headphone amp with balanced I/O
  226. Bartolucci: beware of him !!!
  227. Finding plate resistance
  228. Pleides Tube only headphone amp
  229. I think I know what I want (seasoned advice)
  230. CCS filament supply vs inductors for DHT
  231. Cap outer foil low impedance help...
  232. Distorted low end SE micro amp
  233. LM3886 + ECC82/12AU7
  234. My LCR phono with HUM....
  235. Winter 2A3 SET project.
  236. 6BQ5 pp with LM317 ccs
  237. maratz 7 clone
  238. Music Angel pre-amplifier - few modifications
  239. Transformer Questions (1st Amp Project)
  240. Morgan Jones and PS Bypass Caps
  241. Ruby Tuby at 24V?
  242. Budget Iron for Low-Power SET
  243. Output transformer mounting questions
  244. 3c24 preamp?
  245. Newb Q - JE Simple 2A3 as Monoblocks
  246. Vacuum tube amp design
  247. Counterpoint SA7.1 circuit question
  248. Variable Gain Control Topology
  249. Unknown amplifier, anyone recognice it?
  250. Harman Kardon "The Lute" A-220 - Repair manual?

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