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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. 32 Channel Microphone Preamp
  10. Field coil questions
  11. MC240 found in a shed.
  12. "Impossible" circuit which seems to amplify anyway.
  13. EL84 driving EL84 SEP
  14. Tube buffer for MosFet Citation 12
  15. Building a better power Triode
  16. Original KT88? or not
  17. Moscode 300 Upgrade
  18. Onwer's Manual for Realistic SAF-24D
  19. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  20. 6J4 Experiment!
  21. Anyone build Broskie's T8 OTL?
  22. Just WHY are DHT tubes SO Expensive....?
  23. Two chassis grounding
  24. Tubes vs. Caps?
  25. Impedance and output transformer selection question
  26. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  27. peavey tube amplifiers
  28. Stark 9-66 tester repair
  29. 5e7 bandmaster build q's
  30. What kind of tube did I use back then?
  31. Wanted: Vacuum Tube Phono Preamp for PAS
  32. Lower gain in YS Audio linestage
  33. Converting 12FQ8 for 12AX7 , HELP !!!
  34. Transformer Inquiry
  35. Gibson BR-9 Tube Amp Issues
  36. Stromberg-Carlson AU-35 PA Amp for Guitar
  37. Pitfalls of paralleling different resistor brands?
  38. Question about rp and the AC load line
  39. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  40. What is it about SET's?
  41. Help with Power cable on guitar amp
  42. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  43. A small help with russian low voltage tube
  44. EL34 vs 6L6 for HiFi
  45. Acoustic (not Audio) Alchemy Labs
  46. Mullard 404? ECL82 amp
  47. OP & tube power transormers
  48. EML 300B-XLS Schematic?
  49. Experiences with TAD EL34?
  50. C3g simulation model
  51. ok maybe im just a newb when it comes to amps but...
  52. Yet another compactron to play with...
  53. Weird heater arrangement 12ax7/6bm8
  54. I love SET can we fix what I hate?
  55. Tony's 6H32 pre-amp
  56. rebias guitar amp if using same tubes???
  57. To tone control or not to...
  58. EL84 plate voltage.
  59. 6bx7
  60. Anyone in the L.A. area with scope willing to troubleshoot?
  61. Transformers in series OK?
  62. Russian 6CA4/EZ81 Equivalent?
  63. Amp build recomendation.. for Frazier model sevens
  64. How can I make a DIY AC probe for my DMM
  65. PSUDII Question
  66. EH KT88 Glowing Welds?
  67. Not quite DIY
  68. Searching for a TUBE datasheet GE GL-421
  69. 6EM7 Unit 1
  70. woohoo! RDH4!!!
  71. VTL hum
  72. Use CL-90 to slow 5Y3?
  73. Allen Wright, 1947-2011
  74. Octaves/Ghost notes from Bogen K10. Caps?
  75. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  76. What audio output xfmr for a 6BM8 pp amp?
  77. Parafeeding an EL84 SE(T)
  78. Interesting video from the production of KR tubes
  79. Gassy WE 300b
  80. Bogen Pa Identification 6l6 x 4 dual rectifier
  81. SE output transformer DIY
  82. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  83. AA 151 or Scott 222
  84. Toroidal Output Transformer
  85. Hytron HY615 Data ???
  86. Can I use a 12AX7 with CT 6.3V?
  87. torroidal power transformers
  88. What amp is this
  89. B+ ramping up before CCS filament - danger?
  90. Telefunken Magnetophon 85 --> EL95 Guitar amp
  91. Recommend a good plate choke for 26 tube!!
  92. S11E12 TUBES
  93. Low dropout 6.3v
  94. how to adjust the filament power ecc83
  95. Cary/AES - AE3 Linestage Help Needed !
  96. 5867a
  97. 6V6/12AX7 Project Question/Help
  98. Ultra Linear Push Pull Tube amp
  99. A little help with 6v6 screen needed.
  100. Output Transformers... Decisions Decisions
  101. Need Help. PSU not voltage down from design
  102. D/A preamp FFT measurements for review plz
  103. Type 40, 12A, 112A(syl)
  104. American Audio Picker
  105. one half of a tube in schematic????
  106. estimating power rating of Telefunken transformer
  107. Where is mistake??
  108. Building a 6s45P amp - transformer help
  109. High-End preamplifier with ECC82!
  110. Attempting to recap a couple of old Ampex 2010 suitcase amps
  111. Hi specs rectifier needed
  112. Lux 6056N Intertstage Transformer
  113. Aikido Line Stage / Buffer
  114. JJ KT88s and other octals
  115. Triodes from Russia
  116. Little help needed / do I have a bad tube or really good tube?
  117. 5.1 channel 807 SE amplifier
  118. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  119. Voltage multiplier vs transformer for preamp HV power supply
  120. does tube bias drift like silicon devices
  121. What are the best pots for less than $50 each?
  122. Best EL34 For Triode mode
  123. ASL AQ 1002 PP KT88 problem with input stage
  124. 2A3 Amp schematic suggestions?
  125. what I need for safe use mercury rectifier
  126. Anybody listened to Glow Audio?
  127. Tubes too close to output transformers?
  128. Help with stereo to mono for project
  129. MC3500 with 807 tubes and modern driver tubes
  130. Multiple Film Caps in parallel, Problems?
  131. I need a project......preferably a HIFI amp..........
  132. Aguilar DB-900 question
  133. REN904 for linestage?
  134. Urgent advice on Chinese purchase please!
  135. VR tubes, minimum current
  136. Senior Project Tube Preamp
  137. Antek AS-4T430 measurements
  138. small, light dc coupled 6ea7 amp sanity check
  139. 6S33S SE Transformer Set
  140. I think I blew my amp!! plase help
  141. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  142. testing 6550's on a Hickok 539b, same as KT88?
  143. 9V tube drive pedals - worth it?
  144. Music Angel XD-850MKIII 300b integrated amp
  145. 8150's
  146. More junk from China
  147. 6GM8 above 8mA/24V
  148. One Tube Sound Better Than Four?
  149. HK Citation V rebuild - any advice?
  150. 6GM8/ECC86
  151. Sound Valves vtp-101 Schematic
  152. ~17-18w sweep tube with large plate cap
  153. Fisher 500B Comparison
  154. New build of P-P PCL86 Amp
  155. Transformer question
  156. Can 110V Quad IIs be configured to 220V?
  157. Advice needed re repairing Audio Research VT100
  158. Yaqin SD-CD3 Tube Buffer - upgrading caps
  159. Best value speakers
  160. Peavey Windsor Studio The output tube El 34 burned out
  161. Gyrator PSU's in tube amps
  162. EL34 Amp Running KT66, Safe ?
  163. MJ Optimized Valve Regulator
  164. Need JAN 6418 tube stereo headphone preamp kit advice!
  165. Electronic choke
  166. Can you please help identifying this amp?
  167. [TubeAmp] Beginner's questions
  168. .47uF output cap to 1uF?
  169. Spark gaps on output transformers
  170. St 35 or St 70?
  171. Pi wound output transformers
  172. miniatures 6n1p 6n2p
  173. Begginer questions about a guitar pre amp
  174. HK Citation V schematic?
  175. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  176. Physical Oscillating noise from phono stage
  177. PP 6c33c-b
  178. Modifying the classic Williamson
  179. eimac 152TL and 304TL
  180. LTspice model for Dynaco A470 Output Transfomer
  181. audiodesignguide.com PP KT88
  182. One more 4P1L SE
  183. Mount rectifier above torroidal transformer?
  184. Extending Tube Sockets off a PCB
  185. EMG 200 tube tester
  186. Looking for a great starter stereo P-P amp
  187. Question regarding value of Telefunken tubes.
  188. Magic Eye tube
  189. Partridge Transformers
  190. 6CG7 replacing E88CC in SE KT88 Amp.
  191. Omit the filament windings -- LTM8033 from Linear
  192. Best position for bleeder resistor?
  193. anyone have experience with a Radio Craftsmen C400?
  194. Amp-A, a variation to the EL84 Push Pull theme
  195. tony's 6LU8 push-pull power amp build
  196. First Post Here
  197. MFA Lumi sings high-pitched tunes
  198. Power tubes not drawing current
  199. replacing tubes with circuitry
  200. High Voltage Regulators (Maida or zener)
  201. GU-81m tube amp schematics???
  202. Suggestions on SIPP driver stage
  203. How to eliminate the "white noise" for the 300B tube amp?
  204. 6BQ5 UL Curves?
  205. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  206. 6N1P and 6N6P OTL headphone amp
  207. New Project
  208. Understanding Steve Bench's regulated power supply
  209. Preamp with buffer design
  210. JP200 preamp?
  211. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  212. New Tube Manufacture?
  213. Lowering B+ in PS
  214. Rectifier tube blows
  215. direct coupling
  216. Need some help with these tubes
  217. Edcor GSXE10-8-5K primary Inductance?
  218. SE 2.5k secondary 2w guitar amp
  219. My "Red board" chassis
  220. PP EL34
  221. Building something better with a Chinese SE EL34B Amp DIY Kit
  222. Problem with my amp, and I have run out of ideas
  223. Value of coupling caps
  224. Testing 6BQ5 on Hickok I-177B
  225. Stepped Attenuator for AI Modulus IIA
  226. Tubes are beautifully colored....right?
  227. Differential Input for Aikido Amp?
  228. MY BEST OTL PREAMPLIFIER
  229. Valve testing machine
  230. Line stage with 12AU7 and 6CG7 anyone?
  231. Vibrating capacitor
  232. MingDa MC845-C or Opera COnsonance Reference 9.9
  233. Lower gain 12AX7?
  234. Needed: schematic for Ming Da MC34ab
  235. 12AX7 high gain guitar amp
  236. Solid State Cathodyne Phase Splitter Device?
  237. My Wave Isn't Square.
  238. 6J7 driver in WE91 like amplifier
  239. F2a - C3m Monkey
  240. balanced/unbalanced questions decision time
  241. Stern's saville double 6
  242. GM70 psu transformer.
  243. Antek toroidal vs Edcor?
  244. current production pentode, I_a ~ 8mA
  245. Brook 10c clone
  246. Unknown lamps need help
  247. What's wrong with this?
  248. Microphonics from C0G Caps across Heaters
  249. Yarland FV34CIII vs Synthesis Nimis
  250. 12AT7 and TDA1543...

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