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  1. MC240 found in a shed.
  2. "Impossible" circuit which seems to amplify anyway.
  3. EL84 driving EL84 SEP
  4. Tube buffer for MosFet Citation 12
  5. Building a better power Triode
  6. Original KT88? or not
  7. Moscode 300 Upgrade
  8. Onwer's Manual for Realistic SAF-24D
  9. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  10. 6J4 Experiment!
  11. Anyone build Broskie's T8 OTL?
  12. Just WHY are DHT tubes SO Expensive....?
  13. Two chassis grounding
  14. Tubes vs. Caps?
  15. Impedance and output transformer selection question
  16. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  17. peavey tube amplifiers
  18. Stark 9-66 tester repair
  19. 5e7 bandmaster build q's
  20. What kind of tube did I use back then?
  21. Wanted: Vacuum Tube Phono Preamp for PAS
  22. Lower gain in YS Audio linestage
  23. Converting 12FQ8 for 12AX7 , HELP !!!
  24. Transformer Inquiry
  25. Gibson BR-9 Tube Amp Issues
  26. Stromberg-Carlson AU-35 PA Amp for Guitar
  27. Pitfalls of paralleling different resistor brands?
  28. Question about rp and the AC load line
  29. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  30. What is it about SET's?
  31. Help with Power cable on guitar amp
  32. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  33. A small help with russian low voltage tube
  34. EL34 vs 6L6 for HiFi
  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. rebias guitar amp if using same tubes???
  47. To tone control or not to...
  48. EL84 plate voltage.
  49. 6bx7
  50. Anyone in the L.A. area with scope willing to troubleshoot?
  51. Transformers in series OK?
  52. Russian 6CA4/EZ81 Equivalent?
  53. Amp build recomendation.. for Frazier model sevens
  54. How can I make a DIY AC probe for my DMM
  55. PSUDII Question
  56. EH KT88 Glowing Welds?
  57. Not quite DIY
  58. Searching for a TUBE datasheet GE GL-421
  59. 6EM7 Unit 1
  60. woohoo! RDH4!!!
  61. VTL hum
  62. Use CL-90 to slow 5Y3?
  63. Allen Wright, 1947-2011
  64. Octaves/Ghost notes from Bogen K10. Caps?
  65. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  66. What audio output xfmr for a 6BM8 pp amp?
  67. Parafeeding an EL84 SE(T)
  68. Interesting video from the production of KR tubes
  69. Gassy WE 300b
  70. Bogen Pa Identification 6l6 x 4 dual rectifier
  71. SE output transformer DIY
  72. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  73. AA 151 or Scott 222
  74. Toroidal Output Transformer
  75. Hytron HY615 Data ???
  76. Can I use a 12AX7 with CT 6.3V?
  77. torroidal power transformers
  78. What amp is this
  79. B+ ramping up before CCS filament - danger?
  80. Telefunken Magnetophon 85 --> EL95 Guitar amp
  81. Recommend a good plate choke for 26 tube!!
  82. S11E12 TUBES
  83. Low dropout 6.3v
  84. how to adjust the filament power ecc83
  85. Cary/AES - AE3 Linestage Help Needed !
  86. 5867a
  87. 6V6/12AX7 Project Question/Help
  88. Ultra Linear Push Pull Tube amp
  89. A little help with 6v6 screen needed.
  90. Output Transformers... Decisions Decisions
  91. Need Help. PSU not voltage down from design
  92. D/A preamp FFT measurements for review plz
  93. Type 40, 12A, 112A(syl)
  94. American Audio Picker
  95. one half of a tube in schematic????
  96. estimating power rating of Telefunken transformer
  97. Where is mistake??
  98. Building a 6s45P amp - transformer help
  99. High-End preamplifier with ECC82!
  100. Attempting to recap a couple of old Ampex 2010 suitcase amps
  101. Hi specs rectifier needed
  102. Lux 6056N Intertstage Transformer
  103. Aikido Line Stage / Buffer
  104. JJ KT88s and other octals
  105. Triodes from Russia
  106. Little help needed / do I have a bad tube or really good tube?
  107. 5.1 channel 807 SE amplifier
  108. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  109. Voltage multiplier vs transformer for preamp HV power supply
  110. does tube bias drift like silicon devices
  111. What are the best pots for less than $50 each?
  112. Best EL34 For Triode mode
  113. ASL AQ 1002 PP KT88 problem with input stage
  114. 2A3 Amp schematic suggestions?
  115. what I need for safe use mercury rectifier
  116. Anybody listened to Glow Audio?
  117. Tubes too close to output transformers?
  118. Help with stereo to mono for project
  119. MC3500 with 807 tubes and modern driver tubes
  120. Multiple Film Caps in parallel, Problems?
  121. I need a project......preferably a HIFI amp..........
  122. Aguilar DB-900 question
  123. REN904 for linestage?
  124. Urgent advice on Chinese purchase please!
  125. VR tubes, minimum current
  126. Senior Project Tube Preamp
  127. Antek AS-4T430 measurements
  128. small, light dc coupled 6ea7 amp sanity check
  129. 6S33S SE Transformer Set
  130. I think I blew my amp!! plase help
  131. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  132. testing 6550's on a Hickok 539b, same as KT88?
  133. 9V tube drive pedals - worth it?
  134. Music Angel XD-850MKIII 300b integrated amp
  135. 8150's
  136. More junk from China
  137. 6GM8 above 8mA/24V
  138. One Tube Sound Better Than Four?
  139. HK Citation V rebuild - any advice?
  140. 6GM8/ECC86
  141. Sound Valves vtp-101 Schematic
  142. ~17-18w sweep tube with large plate cap
  143. Fisher 500B Comparison
  144. New build of P-P PCL86 Amp
  145. Transformer question
  146. Can 110V Quad IIs be configured to 220V?
  147. Advice needed re repairing Audio Research VT100
  148. Yaqin SD-CD3 Tube Buffer - upgrading caps
  149. Best value speakers
  150. Peavey Windsor Studio The output tube El 34 burned out
  151. Gyrator PSU's in tube amps
  152. EL34 Amp Running KT66, Safe ?
  153. MJ Optimized Valve Regulator
  154. Need JAN 6418 tube stereo headphone preamp kit advice!
  155. Electronic choke
  156. Can you please help identifying this amp?
  157. [TubeAmp] Beginner's questions
  158. .47uF output cap to 1uF?
  159. Spark gaps on output transformers
  160. St 35 or St 70?
  161. Pi wound output transformers
  162. miniatures 6n1p 6n2p
  163. Begginer questions about a guitar pre amp
  164. HK Citation V schematic?
  165. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  166. Physical Oscillating noise from phono stage
  167. PP 6c33c-b
  168. Modifying the classic Williamson
  169. eimac 152TL and 304TL
  170. LTspice model for Dynaco A470 Output Transfomer
  171. audiodesignguide.com PP KT88
  172. One more 4P1L SE
  173. Mount rectifier above torroidal transformer?
  174. Extending Tube Sockets off a PCB
  175. EMG 200 tube tester
  176. Looking for a great starter stereo P-P amp
  177. Question regarding value of Telefunken tubes.
  178. Magic Eye tube
  179. Partridge Transformers
  180. 6CG7 replacing E88CC in SE KT88 Amp.
  181. Omit the filament windings -- LTM8033 from Linear
  182. Best position for bleeder resistor?
  183. anyone have experience with a Radio Craftsmen C400?
  184. Amp-A, a variation to the EL84 Push Pull theme
  185. tony's 6LU8 push-pull power amp build
  186. First Post Here
  187. MFA Lumi sings high-pitched tunes
  188. Power tubes not drawing current
  189. replacing tubes with circuitry
  190. High Voltage Regulators (Maida or zener)
  191. GU-81m tube amp schematics???
  192. Suggestions on SIPP driver stage
  193. How to eliminate the "white noise" for the 300B tube amp?
  194. 6BQ5 UL Curves?
  195. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  196. 6N1P and 6N6P OTL headphone amp
  197. New Project
  198. Understanding Steve Bench's regulated power supply
  199. Preamp with buffer design
  200. JP200 preamp?
  201. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  202. New Tube Manufacture?
  203. Lowering B+ in PS
  204. Rectifier tube blows
  205. direct coupling
  206. Need some help with these tubes
  207. Edcor GSXE10-8-5K primary Inductance?
  208. SE 2.5k secondary 2w guitar amp
  209. My "Red board" chassis
  210. PP EL34
  211. Building something better with a Chinese SE EL34B Amp DIY Kit
  212. Problem with my amp, and I have run out of ideas
  213. Value of coupling caps
  214. Testing 6BQ5 on Hickok I-177B
  215. Stepped Attenuator for AI Modulus IIA
  216. Tubes are beautifully colored....right?
  217. Differential Input for Aikido Amp?
  218. MY BEST OTL PREAMPLIFIER
  219. Valve testing machine
  220. Line stage with 12AU7 and 6CG7 anyone?
  221. Vibrating capacitor
  222. MingDa MC845-C or Opera COnsonance Reference 9.9
  223. Lower gain 12AX7?
  224. Needed: schematic for Ming Da MC34ab
  225. 12AX7 high gain guitar amp
  226. Solid State Cathodyne Phase Splitter Device?
  227. My Wave Isn't Square.
  228. 6J7 driver in WE91 like amplifier
  229. F2a - C3m Monkey
  230. balanced/unbalanced questions decision time
  231. Stern's saville double 6
  232. GM70 psu transformer.
  233. Antek toroidal vs Edcor?
  234. current production pentode, I_a ~ 8mA
  235. Brook 10c clone
  236. Unknown lamps need help
  237. What's wrong with this?
  238. Microphonics from C0G Caps across Heaters
  239. Yarland FV34CIII vs Synthesis Nimis
  240. 12AT7 and TDA1543...
  241. Eico Hf-81 Integrated Amplifier
  242. Tubed voltage regulator for KT88se amp, need help ?
  243. 1st post what can i build with this?
  244. CJ PV-3 voltage values for schematic
  245. How to analyze square waves?
  246. From KT90 to KT88
  247. side by side bifilar windings in excess of 1000 volts
  248. looking for a great tube amp book.
  249. Revox G36 Mod for preamp
  250. 33 in triode mode...any experience ?

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