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  1. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  2. peavey tube amplifiers
  3. Stark 9-66 tester repair
  4. 5e7 bandmaster build q's
  5. What kind of tube did I use back then?
  6. Wanted: Vacuum Tube Phono Preamp for PAS
  7. Lower gain in YS Audio linestage
  8. Converting 12FQ8 for 12AX7 , HELP !!!
  9. Transformer Inquiry
  10. Gibson BR-9 Tube Amp Issues
  11. Stromberg-Carlson AU-35 PA Amp for Guitar
  12. Pitfalls of paralleling different resistor brands?
  13. Question about rp and the AC load line
  14. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  15. What is it about SET's?
  16. Help with Power cable on guitar amp
  17. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  18. A small help with russian low voltage tube
  19. EL34 vs 6L6 for HiFi
  20. Acoustic (not Audio) Alchemy Labs
  21. Mullard 404? ECL82 amp
  22. OP & tube power transormers
  23. EML 300B-XLS Schematic?
  24. Experiences with TAD EL34?
  25. C3g simulation model
  26. ok maybe im just a newb when it comes to amps but...
  27. Yet another compactron to play with...
  28. Weird heater arrangement 12ax7/6bm8
  29. I love SET can we fix what I hate?
  30. Tony's 6H32 pre-amp
  31. rebias guitar amp if using same tubes???
  32. To tone control or not to...
  33. EL84 plate voltage.
  34. 6bx7
  35. Anyone in the L.A. area with scope willing to troubleshoot?
  36. Transformers in series OK?
  37. Russian 6CA4/EZ81 Equivalent?
  38. Amp build recomendation.. for Frazier model sevens
  39. How can I make a DIY AC probe for my DMM
  40. PSUDII Question
  41. EH KT88 Glowing Welds?
  42. Not quite DIY
  43. Searching for a TUBE datasheet GE GL-421
  44. 6EM7 Unit 1
  45. woohoo! RDH4!!!
  46. VTL hum
  47. Use CL-90 to slow 5Y3?
  48. Allen Wright, 1947-2011
  49. Octaves/Ghost notes from Bogen K10. Caps?
  50. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  51. What audio output xfmr for a 6BM8 pp amp?
  52. Parafeeding an EL84 SE(T)
  53. Interesting video from the production of KR tubes
  54. Gassy WE 300b
  55. Bogen Pa Identification 6l6 x 4 dual rectifier
  56. SE output transformer DIY
  57. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  58. AA 151 or Scott 222
  59. Toroidal Output Transformer
  60. Hytron HY615 Data ???
  61. Can I use a 12AX7 with CT 6.3V?
  62. torroidal power transformers
  63. What amp is this
  64. B+ ramping up before CCS filament - danger?
  65. Telefunken Magnetophon 85 --> EL95 Guitar amp
  66. Recommend a good plate choke for 26 tube!!
  67. S11E12 TUBES
  68. Low dropout 6.3v
  69. how to adjust the filament power ecc83
  70. Cary/AES - AE3 Linestage Help Needed !
  71. 5867a
  72. 6V6/12AX7 Project Question/Help
  73. Ultra Linear Push Pull Tube amp
  74. A little help with 6v6 screen needed.
  75. Output Transformers... Decisions Decisions
  76. Need Help. PSU not voltage down from design
  77. D/A preamp FFT measurements for review plz
  78. Type 40, 12A, 112A(syl)
  79. American Audio Picker
  80. one half of a tube in schematic????
  81. estimating power rating of Telefunken transformer
  82. Where is mistake??
  83. Building a 6s45P amp - transformer help
  84. High-End preamplifier with ECC82!
  85. Attempting to recap a couple of old Ampex 2010 suitcase amps
  86. Hi specs rectifier needed
  87. Lux 6056N Intertstage Transformer
  88. Aikido Line Stage / Buffer
  89. JJ KT88s and other octals
  90. Triodes from Russia
  91. Little help needed / do I have a bad tube or really good tube?
  92. 5.1 channel 807 SE amplifier
  93. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  94. Voltage multiplier vs transformer for preamp HV power supply
  95. does tube bias drift like silicon devices
  96. What are the best pots for less than $50 each?
  97. Best EL34 For Triode mode
  98. ASL AQ 1002 PP KT88 problem with input stage
  99. 2A3 Amp schematic suggestions?
  100. what I need for safe use mercury rectifier
  101. Anybody listened to Glow Audio?
  102. Tubes too close to output transformers?
  103. Help with stereo to mono for project
  104. MC3500 with 807 tubes and modern driver tubes
  105. Multiple Film Caps in parallel, Problems?
  106. I need a project......preferably a HIFI amp..........
  107. Aguilar DB-900 question
  108. REN904 for linestage?
  109. Urgent advice on Chinese purchase please!
  110. VR tubes, minimum current
  111. Senior Project Tube Preamp
  112. Antek AS-4T430 measurements
  113. small, light dc coupled 6ea7 amp sanity check
  114. 6S33S SE Transformer Set
  115. I think I blew my amp!! plase help
  116. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  117. testing 6550's on a Hickok 539b, same as KT88?
  118. 9V tube drive pedals - worth it?
  119. Music Angel XD-850MKIII 300b integrated amp
  120. 8150's
  121. More junk from China
  122. 6GM8 above 8mA/24V
  123. One Tube Sound Better Than Four?
  124. HK Citation V rebuild - any advice?
  125. 6GM8/ECC86
  126. Sound Valves vtp-101 Schematic
  127. ~17-18w sweep tube with large plate cap
  128. Fisher 500B Comparison
  129. New build of P-P PCL86 Amp
  130. Transformer question
  131. Can 110V Quad IIs be configured to 220V?
  132. Advice needed re repairing Audio Research VT100
  133. Yaqin SD-CD3 Tube Buffer - upgrading caps
  134. Best value speakers
  135. Peavey Windsor Studio The output tube El 34 burned out
  136. Gyrator PSU's in tube amps
  137. EL34 Amp Running KT66, Safe ?
  138. MJ Optimized Valve Regulator
  139. Need JAN 6418 tube stereo headphone preamp kit advice!
  140. Electronic choke
  141. Can you please help identifying this amp?
  142. [TubeAmp] Beginner's questions
  143. .47uF output cap to 1uF?
  144. Spark gaps on output transformers
  145. St 35 or St 70?
  146. Pi wound output transformers
  147. miniatures 6n1p 6n2p
  148. Begginer questions about a guitar pre amp
  149. HK Citation V schematic?
  150. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  151. Physical Oscillating noise from phono stage
  152. PP 6c33c-b
  153. Modifying the classic Williamson
  154. eimac 152TL and 304TL
  155. LTspice model for Dynaco A470 Output Transfomer
  156. audiodesignguide.com PP KT88
  157. One more 4P1L SE
  158. Mount rectifier above torroidal transformer?
  159. Extending Tube Sockets off a PCB
  160. EMG 200 tube tester
  161. Looking for a great starter stereo P-P amp
  162. Question regarding value of Telefunken tubes.
  163. Magic Eye tube
  164. Partridge Transformers
  165. 6CG7 replacing E88CC in SE KT88 Amp.
  166. Omit the filament windings -- LTM8033 from Linear
  167. Best position for bleeder resistor?
  168. anyone have experience with a Radio Craftsmen C400?
  169. Amp-A, a variation to the EL84 Push Pull theme
  170. tony's 6LU8 push-pull power amp build
  171. First Post Here
  172. MFA Lumi sings high-pitched tunes
  173. Power tubes not drawing current
  174. replacing tubes with circuitry
  175. High Voltage Regulators (Maida or zener)
  176. GU-81m tube amp schematics???
  177. Suggestions on SIPP driver stage
  178. How to eliminate the "white noise" for the 300B tube amp?
  179. 6BQ5 UL Curves?
  180. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  181. 6N1P and 6N6P OTL headphone amp
  182. New Project
  183. Understanding Steve Bench's regulated power supply
  184. Preamp with buffer design
  185. JP200 preamp?
  186. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  187. New Tube Manufacture?
  188. Lowering B+ in PS
  189. Rectifier tube blows
  190. direct coupling
  191. Need some help with these tubes
  192. Edcor GSXE10-8-5K primary Inductance?
  193. SE 2.5k secondary 2w guitar amp
  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. Testing 6BQ5 on Hickok I-177B
  200. Stepped Attenuator for AI Modulus IIA
  201. Tubes are beautifully colored....right?
  202. Differential Input for Aikido Amp?
  203. MY BEST OTL PREAMPLIFIER
  204. Valve testing machine
  205. Line stage with 12AU7 and 6CG7 anyone?
  206. Vibrating capacitor
  207. MingDa MC845-C or Opera COnsonance Reference 9.9
  208. Lower gain 12AX7?
  209. Needed: schematic for Ming Da MC34ab
  210. 12AX7 high gain guitar amp
  211. Solid State Cathodyne Phase Splitter Device?
  212. My Wave Isn't Square.
  213. 6J7 driver in WE91 like amplifier
  214. F2a - C3m Monkey
  215. balanced/unbalanced questions decision time
  216. Stern's saville double 6
  217. GM70 psu transformer.
  218. Antek toroidal vs Edcor?
  219. current production pentode, I_a ~ 8mA
  220. Brook 10c clone
  221. Unknown lamps need help
  222. What's wrong with this?
  223. Microphonics from C0G Caps across Heaters
  224. Yarland FV34CIII vs Synthesis Nimis
  225. 12AT7 and TDA1543...
  226. Eico Hf-81 Integrated Amplifier
  227. Tubed voltage regulator for KT88se amp, need help ?
  228. 1st post what can i build with this?
  229. CJ PV-3 voltage values for schematic
  230. How to analyze square waves?
  231. From KT90 to KT88
  232. side by side bifilar windings in excess of 1000 volts
  233. looking for a great tube amp book.
  234. Revox G36 Mod for preamp
  235. 33 in triode mode...any experience ?
  236. Help with Decware Zen EL84 SET
  237. Bumblebee Caps
  238. Find schematic of amplifier mcintosh mc 275 mkiv
  239. Heater wiring - Coaxial?
  240. now mono blocks!
  241. Heathkit AA-40 or AA-121
  242. UTC o-9 ouncers for headphone amp?
  243. Help modify 6H30 Mu-follower stage
  244. Help me to identify unknown tube
  245. Valve Compressor Circuit
  246. Should I rebuild my Eico 950 Cap Tester?
  247. Choke orientation (Need help)
  248. push pull 813 tube in ultra linear mode
  249. AD1865 DAC + 6SN7 analogue stage
  250. Inexpensive tube amplifier kits?

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