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  1. Rectifiers
  2. Yaqin MC 10l problem
  3. Stripping Edcor's powder coating
  4. 5Y3 with slow warm up input and output tubes
  5. power transformer question
  6. DHT heaters . and their property"s
  7. Power Tube Cathode Resistor "distance"
  8. Does the same output power from tube amp and ss amp have difference?
  9. Field coil questions
  10. MC240 found in a shed.
  11. "Impossible" circuit which seems to amplify anyway.
  12. EL84 driving EL84 SEP
  13. Tube buffer for MosFet Citation 12
  14. Building a better power Triode
  15. Original KT88? or not
  16. Moscode 300 Upgrade
  17. Onwer's Manual for Realistic SAF-24D
  18. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  19. 6J4 Experiment!
  20. Anyone build Broskie's T8 OTL?
  21. Just WHY are DHT tubes SO Expensive....?
  22. Two chassis grounding
  23. Impedance and output transformer selection question
  24. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  25. What kind of tube did I use back then?
  26. Wanted: Vacuum Tube Phono Preamp for PAS
  27. Lower gain in YS Audio linestage
  28. Converting 12FQ8 for 12AX7 , HELP !!!
  29. Transformer Inquiry
  30. Question about rp and the AC load line
  31. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  32. What is it about SET's?
  33. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  34. A small help with russian low voltage tube
  35. Acoustic (not Audio) Alchemy Labs
  36. Mullard 404? ECL82 amp
  37. OP & tube power transormers
  38. EML 300B-XLS Schematic?
  39. Experiences with TAD EL34?
  40. C3g simulation model
  41. ok maybe im just a newb when it comes to amps but...
  42. Yet another compactron to play with...
  43. Weird heater arrangement 12ax7/6bm8
  44. I love SET can we fix what I hate?
  45. Tony's 6H32 pre-amp
  46. To tone control or not to...
  47. EL84 plate voltage.
  48. 6bx7
  49. Anyone in the L.A. area with scope willing to troubleshoot?
  50. Transformers in series OK?
  51. Russian 6CA4/EZ81 Equivalent?
  52. Amp build recomendation.. for Frazier model sevens
  53. How can I make a DIY AC probe for my DMM
  54. PSUDII Question
  55. EH KT88 Glowing Welds?
  56. Not quite DIY
  57. Searching for a TUBE datasheet GE GL-421
  58. 6EM7 Unit 1
  59. woohoo! RDH4!!!
  60. VTL hum
  61. Use CL-90 to slow 5Y3?
  62. Octaves/Ghost notes from Bogen K10. Caps?
  63. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  64. What audio output xfmr for a 6BM8 pp amp?
  65. Parafeeding an EL84 SE(T)
  66. Interesting video from the production of KR tubes
  67. Gassy WE 300b
  68. Bogen Pa Identification 6l6 x 4 dual rectifier
  69. SE output transformer DIY
  70. AA 151 or Scott 222
  71. Toroidal Output Transformer
  72. Hytron HY615 Data ???
  73. Can I use a 12AX7 with CT 6.3V?
  74. torroidal power transformers
  75. What amp is this
  76. B+ ramping up before CCS filament - danger?
  77. Recommend a good plate choke for 26 tube!!
  78. S11E12 TUBES
  79. Low dropout 6.3v
  80. how to adjust the filament power ecc83
  81. Cary/AES - AE3 Linestage Help Needed !
  82. 5867a
  83. 6V6/12AX7 Project Question/Help
  84. Ultra Linear Push Pull Tube amp
  85. A little help with 6v6 screen needed.
  86. Output Transformers... Decisions Decisions
  87. Need Help. PSU not voltage down from design
  88. D/A preamp FFT measurements for review plz
  89. Type 40, 12A, 112A(syl)
  90. American Audio Picker
  91. one half of a tube in schematic????
  92. estimating power rating of Telefunken transformer
  93. Where is mistake??
  94. Building a 6s45P amp - transformer help
  95. High-End preamplifier with ECC82!
  96. Attempting to recap a couple of old Ampex 2010 suitcase amps
  97. Hi specs rectifier needed
  98. Lux 6056N Interstage Transformer
  99. Aikido Line Stage / Buffer
  100. JJ KT88s and other octals
  101. Triodes from Russia
  102. Little help needed / do I have a bad tube or really good tube?
  103. 5.1 channel 807 SE amplifier
  104. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  105. Voltage multiplier vs transformer for preamp HV power supply
  106. does tube bias drift like silicon devices
  107. Best EL34 For Triode mode
  108. ASL AQ 1002 PP KT88 problem with input stage
  109. 2A3 Amp schematic suggestions?
  110. what I need for safe use mercury rectifier
  111. Anybody listened to Glow Audio?
  112. Tubes too close to output transformers?
  113. Help with stereo to mono for project
  114. MC3500 with 807 tubes and modern driver tubes
  115. I need a project......preferably a HIFI amp..........
  116. REN904 for linestage?
  117. Urgent advice on Chinese purchase please!
  118. VR tubes, minimum current
  119. Senior Project Tube Preamp
  120. Antek AS-4T430 measurements
  121. small, light dc coupled 6ea7 amp sanity check
  122. 6S33S SE Transformer Set
  123. I think I blew my amp!! plase help
  124. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  125. Music Angel XD-850MKIII 300b integrated amp
  126. 8150's
  127. More junk from China
  128. 6GM8 above 8mA/24V
  129. One Tube Sound Better Than Four?
  130. HK Citation V rebuild - any advice?
  131. 6GM8/ECC86
  132. Sound Valves vtp-101 Schematic
  133. ~17-18w sweep tube with large plate cap
  134. Fisher 500B Comparison
  135. New build of P-P PCL86 Amp
  136. Transformer question
  137. Can 110V Quad IIs be configured to 220V?
  138. Advice needed re repairing Audio Research VT100
  139. Yaqin SD-CD3 Tube Buffer - upgrading caps
  140. Gyrator PSU's in tube amps
  141. EL34 Amp Running KT66, Safe ?
  142. MJ Optimized Valve Regulator
  143. Need JAN 6418 tube stereo headphone preamp kit advice!
  144. Electronic choke
  145. Can you please help identifying this amp?
  146. [TubeAmp] Beginner's questions
  147. .47uF output cap to 1uF?
  148. Spark gaps on output transformers
  149. St 35 or St 70?
  150. Pi wound output transformers
  151. miniatures 6n1p 6n2p
  152. HK Citation V schematic?
  153. Physical Oscillating noise from phono stage
  154. PP 6c33c-b
  155. Modifying the classic Williamson
  156. eimac 152TL and 304TL
  157. LTspice model for Dynaco A470 Output Transfomer
  158. audiodesignguide.com PP KT88
  159. One more 4P1L SE
  160. Mount rectifier above torroidal transformer?
  161. Extending Tube Sockets off a PCB
  162. Looking for a great starter stereo P-P amp
  163. Question regarding value of Telefunken tubes.
  164. Magic Eye tube
  165. Partridge Transformers
  166. 6CG7 replacing E88CC in SE KT88 Amp.
  167. Omit the filament windings -- LTM8033 from Linear
  168. Best position for bleeder resistor?
  169. anyone have experience with a Radio Craftsmen C400?
  170. Amp-A, a variation to the EL84 Push Pull theme
  171. tony's 6LU8 push-pull power amp build
  172. First Post Here
  173. MFA Lumi sings high-pitched tunes
  174. Power tubes not drawing current
  175. replacing tubes with circuitry
  176. High Voltage Regulators (Maida or zener)
  177. GU-81m tube amp schematics???
  178. Suggestions on SIPP driver stage
  179. How to eliminate the "white noise" for the 300B tube amp?
  180. 6BQ5 UL Curves?
  181. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  182. 6N1P and 6N6P OTL headphone amp
  183. New Project
  184. Understanding Steve Bench's regulated power supply
  185. Preamp with buffer design
  186. JP200 preamp?
  187. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  188. New Tube Manufacture?
  189. Lowering B+ in PS
  190. Rectifier tube blows
  191. direct coupling
  192. Need some help with these tubes
  193. Edcor GSXE10-8-5K primary Inductance?
  194. My "Red board" chassis
  195. PP EL34
  196. Building something better with a Chinese SE EL34B Amp DIY Kit
  197. Problem with my amp, and I have run out of ideas
  198. Value of coupling caps
  199. Stepped Attenuator for AI Modulus IIA
  200. Tubes are beautifully colored....right?
  201. Differential Input for Aikido Amp?
  202. My Best OTL Amplifier
  203. Valve testing machine
  204. Line stage with 12AU7 and 6CG7 anyone?
  205. MingDa MC845-C or Opera COnsonance Reference 9.9
  206. Lower gain 12AX7?
  207. Needed: schematic for Ming Da MC34ab
  208. Solid State Cathodyne Phase Splitter Device?
  209. My Wave Isn't Square.
  210. 6J7 driver in WE91 like amplifier
  211. F2a - C3m Monkey
  212. balanced/unbalanced questions decision time
  213. Stern's saville double 6
  214. GM70 psu transformer.
  215. Antek toroidal vs Edcor?
  216. current production pentode, I_a ~ 8mA
  217. Brook 10c clone
  218. Unknown lamps need help
  219. What's wrong with this?
  220. Microphonics from C0G Caps across Heaters
  221. Yarland FV34CIII vs Synthesis Nimis
  222. 12AT7 and TDA1543...
  223. Eico Hf-81 Integrated Amplifier
  224. Tubed voltage regulator for KT88se amp, need help ?
  225. 1st post what can i build with this?
  226. CJ PV-3 voltage values for schematic
  227. From KT90 to KT88
  228. side by side bifilar windings in excess of 1000 volts
  229. looking for a great tube amp book.
  230. Revox G36 Mod for preamp
  231. 33 in triode mode...any experience ?
  232. Help with Decware Zen EL84 SET
  233. Find schematic of amplifier mcintosh mc 275 mkiv
  234. Heater wiring - Coaxial?
  235. now mono blocks!
  236. Heathkit AA-40 or AA-121
  237. UTC o-9 ouncers for headphone amp?
  238. Help modify 6H30 Mu-follower stage
  239. Help me to identify unknown tube
  240. Choke orientation (Need help)
  241. push pull 813 tube in ultra linear mode
  242. AD1865 DAC + 6SN7 analogue stage
  243. Inexpensive tube amplifier kits?
  244. SET amp/speaker issue.
  245. No pre-Amp - Pre Amp
  246. Found a CHEAP source of output transformers in Europe
  247. How calculate cathode LEDs biased
  248. ESR test for tube amps ?
  249. asking help/knowledge asked: luxman d105u output stage
  250. Have you ever seen a 4 pin blue Alps pot??? need help

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