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  1. Original KT88? or not
  2. Moscode 300 Upgrade
  3. Onwer's Manual for Realistic SAF-24D
  4. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  5. 6J4 Experiment!
  6. Anyone build Broskie's T8 OTL?
  7. Just WHY are DHT tubes SO Expensive....?
  8. Two chassis grounding
  9. Tubes vs. Caps?
  10. Impedance and output transformer selection question
  11. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  12. peavey tube amplifiers
  13. Stark 9-66 tester repair
  14. 5e7 bandmaster build q's
  15. What kind of tube did I use back then?
  16. Wanted: Vacuum Tube Phono Preamp for PAS
  17. Lower gain in YS Audio linestage
  18. Converting 12FQ8 for 12AX7 , HELP !!!
  19. Transformer Inquiry
  20. Gibson BR-9 Tube Amp Issues
  21. Stromberg-Carlson AU-35 PA Amp for Guitar
  22. Pitfalls of paralleling different resistor brands?
  23. Question about rp and the AC load line
  24. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  25. What is it about SET's?
  26. Help with Power cable on guitar amp
  27. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  28. A small help with russian low voltage tube
  29. EL34 vs 6L6 for HiFi
  30. Acoustic (not Audio) Alchemy Labs
  31. Mullard 404? ECL82 amp
  32. OP & tube power transormers
  33. EML 300B-XLS Schematic?
  34. Experiences with TAD EL34?
  35. C3g simulation model
  36. ok maybe im just a newb when it comes to amps but...
  37. Yet another compactron to play with...
  38. Weird heater arrangement 12ax7/6bm8
  39. I love SET can we fix what I hate?
  40. Tony's 6H32 pre-amp
  41. rebias guitar amp if using same tubes???
  42. To tone control or not to...
  43. EL84 plate voltage.
  44. 6bx7
  45. Anyone in the L.A. area with scope willing to troubleshoot?
  46. Transformers in series OK?
  47. Russian 6CA4/EZ81 Equivalent?
  48. Amp build recomendation.. for Frazier model sevens
  49. How can I make a DIY AC probe for my DMM
  50. PSUDII Question
  51. EH KT88 Glowing Welds?
  52. Not quite DIY
  53. Searching for a TUBE datasheet GE GL-421
  54. 6EM7 Unit 1
  55. woohoo! RDH4!!!
  56. VTL hum
  57. Use CL-90 to slow 5Y3?
  58. Allen Wright, 1947-2011
  59. Octaves/Ghost notes from Bogen K10. Caps?
  60. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  61. What audio output xfmr for a 6BM8 pp amp?
  62. Parafeeding an EL84 SE(T)
  63. Interesting video from the production of KR tubes
  64. Gassy WE 300b
  65. Bogen Pa Identification 6l6 x 4 dual rectifier
  66. SE output transformer DIY
  67. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  68. AA 151 or Scott 222
  69. Toroidal Output Transformer
  70. Hytron HY615 Data ???
  71. Can I use a 12AX7 with CT 6.3V?
  72. torroidal power transformers
  73. What amp is this
  74. B+ ramping up before CCS filament - danger?
  75. Telefunken Magnetophon 85 --> EL95 Guitar amp
  76. Recommend a good plate choke for 26 tube!!
  77. S11E12 TUBES
  78. Low dropout 6.3v
  79. how to adjust the filament power ecc83
  80. Cary/AES - AE3 Linestage Help Needed !
  81. 5867a
  82. 6V6/12AX7 Project Question/Help
  83. Ultra Linear Push Pull Tube amp
  84. A little help with 6v6 screen needed.
  85. Output Transformers... Decisions Decisions
  86. Need Help. PSU not voltage down from design
  87. D/A preamp FFT measurements for review plz
  88. Type 40, 12A, 112A(syl)
  89. American Audio Picker
  90. one half of a tube in schematic????
  91. estimating power rating of Telefunken transformer
  92. Where is mistake??
  93. Building a 6s45P amp - transformer help
  94. High-End preamplifier with ECC82!
  95. Attempting to recap a couple of old Ampex 2010 suitcase amps
  96. Hi specs rectifier needed
  97. Lux 6056N Intertstage Transformer
  98. Aikido Line Stage / Buffer
  99. JJ KT88s and other octals
  100. Triodes from Russia
  101. Little help needed / do I have a bad tube or really good tube?
  102. 5.1 channel 807 SE amplifier
  103. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  104. Voltage multiplier vs transformer for preamp HV power supply
  105. does tube bias drift like silicon devices
  106. What are the best pots for less than $50 each?
  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. Multiple Film Caps in parallel, Problems?
  116. I need a project......preferably a HIFI amp..........
  117. Aguilar DB-900 question
  118. REN904 for linestage?
  119. Urgent advice on Chinese purchase please!
  120. VR tubes, minimum current
  121. Senior Project Tube Preamp
  122. Antek AS-4T430 measurements
  123. small, light dc coupled 6ea7 amp sanity check
  124. 6S33S SE Transformer Set
  125. I think I blew my amp!! plase help
  126. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  127. testing 6550's on a Hickok 539b, same as KT88?
  128. 9V tube drive pedals - worth it?
  129. Music Angel XD-850MKIII 300b integrated amp
  130. 8150's
  131. More junk from China
  132. 6GM8 above 8mA/24V
  133. One Tube Sound Better Than Four?
  134. HK Citation V rebuild - any advice?
  135. 6GM8/ECC86
  136. Sound Valves vtp-101 Schematic
  137. ~17-18w sweep tube with large plate cap
  138. Fisher 500B Comparison
  139. New build of P-P PCL86 Amp
  140. Transformer question
  141. Can 110V Quad IIs be configured to 220V?
  142. Advice needed re repairing Audio Research VT100
  143. Yaqin SD-CD3 Tube Buffer - upgrading caps
  144. Best value speakers
  145. Peavey Windsor Studio The output tube El 34 burned out
  146. Gyrator PSU's in tube amps
  147. EL34 Amp Running KT66, Safe ?
  148. MJ Optimized Valve Regulator
  149. Need JAN 6418 tube stereo headphone preamp kit advice!
  150. Electronic choke
  151. Can you please help identifying this amp?
  152. [TubeAmp] Beginner's questions
  153. .47uF output cap to 1uF?
  154. Spark gaps on output transformers
  155. St 35 or St 70?
  156. Pi wound output transformers
  157. miniatures 6n1p 6n2p
  158. Begginer questions about a guitar pre amp
  159. HK Citation V schematic?
  160. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  161. Physical Oscillating noise from phono stage
  162. PP 6c33c-b
  163. Modifying the classic Williamson
  164. eimac 152TL and 304TL
  165. LTspice model for Dynaco A470 Output Transfomer
  166. audiodesignguide.com PP KT88
  167. One more 4P1L SE
  168. Mount rectifier above torroidal transformer?
  169. Extending Tube Sockets off a PCB
  170. EMG 200 tube tester
  171. Looking for a great starter stereo P-P amp
  172. Question regarding value of Telefunken tubes.
  173. Magic Eye tube
  174. Partridge Transformers
  175. 6CG7 replacing E88CC in SE KT88 Amp.
  176. Omit the filament windings -- LTM8033 from Linear
  177. Best position for bleeder resistor?
  178. anyone have experience with a Radio Craftsmen C400?
  179. Amp-A, a variation to the EL84 Push Pull theme
  180. tony's 6LU8 push-pull power amp build
  181. First Post Here
  182. MFA Lumi sings high-pitched tunes
  183. Power tubes not drawing current
  184. replacing tubes with circuitry
  185. High Voltage Regulators (Maida or zener)
  186. GU-81m tube amp schematics???
  187. Suggestions on SIPP driver stage
  188. How to eliminate the "white noise" for the 300B tube amp?
  189. 6BQ5 UL Curves?
  190. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  191. 6N1P and 6N6P OTL headphone amp
  192. New Project
  193. Understanding Steve Bench's regulated power supply
  194. Preamp with buffer design
  195. JP200 preamp?
  196. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  197. New Tube Manufacture?
  198. Lowering B+ in PS
  199. Rectifier tube blows
  200. direct coupling
  201. Need some help with these tubes
  202. Edcor GSXE10-8-5K primary Inductance?
  203. SE 2.5k secondary 2w guitar amp
  204. My "Red board" chassis
  205. PP EL34
  206. Building something better with a Chinese SE EL34B Amp DIY Kit
  207. Problem with my amp, and I have run out of ideas
  208. Value of coupling caps
  209. Testing 6BQ5 on Hickok I-177B
  210. Stepped Attenuator for AI Modulus IIA
  211. Tubes are beautifully colored....right?
  212. Differential Input for Aikido Amp?
  213. MY BEST OTL PREAMPLIFIER
  214. Valve testing machine
  215. Line stage with 12AU7 and 6CG7 anyone?
  216. Vibrating capacitor
  217. MingDa MC845-C or Opera COnsonance Reference 9.9
  218. Lower gain 12AX7?
  219. Needed: schematic for Ming Da MC34ab
  220. 12AX7 high gain guitar amp
  221. Solid State Cathodyne Phase Splitter Device?
  222. My Wave Isn't Square.
  223. 6J7 driver in WE91 like amplifier
  224. F2a - C3m Monkey
  225. balanced/unbalanced questions decision time
  226. Stern's saville double 6
  227. GM70 psu transformer.
  228. Antek toroidal vs Edcor?
  229. current production pentode, I_a ~ 8mA
  230. Brook 10c clone
  231. Unknown lamps need help
  232. What's wrong with this?
  233. Microphonics from C0G Caps across Heaters
  234. Yarland FV34CIII vs Synthesis Nimis
  235. 12AT7 and TDA1543...
  236. Eico Hf-81 Integrated Amplifier
  237. Tubed voltage regulator for KT88se amp, need help ?
  238. 1st post what can i build with this?
  239. CJ PV-3 voltage values for schematic
  240. How to analyze square waves?
  241. From KT90 to KT88
  242. side by side bifilar windings in excess of 1000 volts
  243. looking for a great tube amp book.
  244. Revox G36 Mod for preamp
  245. 33 in triode mode...any experience ?
  246. Help with Decware Zen EL84 SET
  247. Bumblebee Caps
  248. Find schematic of amplifier mcintosh mc 275 mkiv
  249. Heater wiring - Coaxial?
  250. now mono blocks!

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