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  1. 12AX7 dual triode "Signal Enhancer/Conditioner"
  2. 2nos of 6l6 in Parallel SE mode
  3. Output transformer selection
  4. 5C8S rectifier psud2 modle/rectifier information
  5. EF80 / KT77 SIngle Ended
  6. Longevity of output tubes in triode vs pentode
  7. Fender champ circuit low output.
  8. ekco ui59 receiver
  9. simple heater question .....
  10. Different Differential Pairs
  11. Decware Zen SET (first project/90% finished)
  12. YL-1200 for audioamp
  13. 7984's
  14. Building First Preamp HELP
  15. Aikido All-In-One Octal B+ measurement.
  16. OPT PP for GU50 Triode ?
  17. Requesting input on preamp schematic
  18. Longer life 6CA7's for class A
  19. Organ split
  20. Two amps done and done!
  21. Testing the 5842/417a on Sencore MU150?
  22. Why Class A Guitar Amplifiers Sound So Good ........
  23. Tube ID
  24. How to best drive an 845?
  25. K-16ls + ton pcb (just finished pics)
  26. Helios + Pultec tube EQ rack prototype.
  27. 12ax7 preamplifier with modified power supply!!! please help!
  28. tube amp prototype with pc
  29. Looking for a new diy project
  30. To James or to Baxandall?
  31. 45 triode : max 275 or 300 vdc ?
  32. Anyone with experience breaking in capacitors out of circuit?
  33. Vt-64/800 tube amp/preamp
  34. Hammond 1609 Output Transformer - EL84
  35. Chinese Capacitors
  36. 60 Watts A Channel 6528A Tube Amp
  37. AC or DC heathing?
  38. 1000W tube amplifier
  39. LEDs or RC?
  40. Is this amp worth bringing back to life?
  41. Melody PM845
  42. Need help troubleshooting this integrated.
  43. Wanted...design for D3a triode strapped driving 45
  44. Removing Tone Controls from VoM Preamp/Amp
  45. Philips 8580 useful anywhere?
  46. output transformer info
  47. 100Hz square preamp responce help
  48. 6P21s 6n21c tube, True Direct Heater?
  49. Convert Dogzilla for Hi-Fi output
  50. Bogen AP-35 Static and Pop from one channel
  51. EL34 PP triode mode hums
  52. Rectifiers
  53. Yaqin MC 10l problem
  54. Stripping Edcor's powder coating
  55. 5Y3 with slow warm up input and output tubes
  56. power transformer question
  57. DHT heaters . and their property"s
  58. Power Tube Cathode Resistor "distance"
  59. Does the same output power from tube amp and ss amp have difference?
  60. 32 Channel Microphone Preamp
  61. Field coil questions
  62. MC240 found in a shed.
  63. "Impossible" circuit which seems to amplify anyway.
  64. EL84 driving EL84 SEP
  65. Tube buffer for MosFet Citation 12
  66. Building a better power Triode
  67. Original KT88? or not
  68. Moscode 300 Upgrade
  69. Onwer's Manual for Realistic SAF-24D
  70. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  71. 6J4 Experiment!
  72. Anyone build Broskie's T8 OTL?
  73. Just WHY are DHT tubes SO Expensive....?
  74. Two chassis grounding
  75. Tubes vs. Caps?
  76. Impedance and output transformer selection question
  77. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  78. peavey tube amplifiers
  79. Stark 9-66 tester repair
  80. 5e7 bandmaster build q's
  81. What kind of tube did I use back then?
  82. Wanted: Vacuum Tube Phono Preamp for PAS
  83. Lower gain in YS Audio linestage
  84. Converting 12FQ8 for 12AX7 , HELP !!!
  85. Transformer Inquiry
  86. Gibson BR-9 Tube Amp Issues
  87. Stromberg-Carlson AU-35 PA Amp for Guitar
  88. Pitfalls of paralleling different resistor brands?
  89. Question about rp and the AC load line
  90. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  91. What is it about SET's?
  92. Help with Power cable on guitar amp
  93. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  94. A small help with russian low voltage tube
  95. Acoustic (not Audio) Alchemy Labs
  96. Mullard 404? ECL82 amp
  97. OP & tube power transormers
  98. EML 300B-XLS Schematic?
  99. Experiences with TAD EL34?
  100. C3g simulation model
  101. ok maybe im just a newb when it comes to amps but...
  102. Yet another compactron to play with...
  103. Weird heater arrangement 12ax7/6bm8
  104. I love SET can we fix what I hate?
  105. Tony's 6H32 pre-amp
  106. rebias guitar amp if using same tubes???
  107. To tone control or not to...
  108. EL84 plate voltage.
  109. 6bx7
  110. Anyone in the L.A. area with scope willing to troubleshoot?
  111. Transformers in series OK?
  112. Russian 6CA4/EZ81 Equivalent?
  113. Amp build recomendation.. for Frazier model sevens
  114. How can I make a DIY AC probe for my DMM
  115. PSUDII Question
  116. EH KT88 Glowing Welds?
  117. Not quite DIY
  118. Searching for a TUBE datasheet GE GL-421
  119. 6EM7 Unit 1
  120. woohoo! RDH4!!!
  121. VTL hum
  122. Use CL-90 to slow 5Y3?
  123. Allen Wright, 1947-2011
  124. Octaves/Ghost notes from Bogen K10. Caps?
  125. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  126. What audio output xfmr for a 6BM8 pp amp?
  127. Parafeeding an EL84 SE(T)
  128. Interesting video from the production of KR tubes
  129. Gassy WE 300b
  130. Bogen Pa Identification 6l6 x 4 dual rectifier
  131. SE output transformer DIY
  132. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  133. AA 151 or Scott 222
  134. Toroidal Output Transformer
  135. Hytron HY615 Data ???
  136. Can I use a 12AX7 with CT 6.3V?
  137. torroidal power transformers
  138. What amp is this
  139. B+ ramping up before CCS filament - danger?
  140. Telefunken Magnetophon 85 --> EL95 Guitar amp
  141. Recommend a good plate choke for 26 tube!!
  142. S11E12 TUBES
  143. Low dropout 6.3v
  144. how to adjust the filament power ecc83
  145. Cary/AES - AE3 Linestage Help Needed !
  146. 5867a
  147. 6V6/12AX7 Project Question/Help
  148. Ultra Linear Push Pull Tube amp
  149. A little help with 6v6 screen needed.
  150. Output Transformers... Decisions Decisions
  151. Need Help. PSU not voltage down from design
  152. D/A preamp FFT measurements for review plz
  153. Type 40, 12A, 112A(syl)
  154. American Audio Picker
  155. one half of a tube in schematic????
  156. estimating power rating of Telefunken transformer
  157. Where is mistake??
  158. Building a 6s45P amp - transformer help
  159. High-End preamplifier with ECC82!
  160. Attempting to recap a couple of old Ampex 2010 suitcase amps
  161. Hi specs rectifier needed
  162. Lux 6056N Intertstage Transformer
  163. Aikido Line Stage / Buffer
  164. JJ KT88s and other octals
  165. Triodes from Russia
  166. Little help needed / do I have a bad tube or really good tube?
  167. 5.1 channel 807 SE amplifier
  168. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  169. Voltage multiplier vs transformer for preamp HV power supply
  170. does tube bias drift like silicon devices
  171. What are the best pots for less than $50 each?
  172. Best EL34 For Triode mode
  173. ASL AQ 1002 PP KT88 problem with input stage
  174. 2A3 Amp schematic suggestions?
  175. what I need for safe use mercury rectifier
  176. Anybody listened to Glow Audio?
  177. Tubes too close to output transformers?
  178. Help with stereo to mono for project
  179. MC3500 with 807 tubes and modern driver tubes
  180. Multiple Film Caps in parallel, Problems?
  181. I need a project......preferably a HIFI amp..........
  182. Aguilar DB-900 question
  183. REN904 for linestage?
  184. Urgent advice on Chinese purchase please!
  185. VR tubes, minimum current
  186. Senior Project Tube Preamp
  187. Antek AS-4T430 measurements
  188. small, light dc coupled 6ea7 amp sanity check
  189. 6S33S SE Transformer Set
  190. I think I blew my amp!! plase help
  191. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  192. testing 6550's on a Hickok 539b, same as KT88?
  193. 9V tube drive pedals - worth it?
  194. Music Angel XD-850MKIII 300b integrated amp
  195. 8150's
  196. More junk from China
  197. 6GM8 above 8mA/24V
  198. One Tube Sound Better Than Four?
  199. HK Citation V rebuild - any advice?
  200. 6GM8/ECC86
  201. Sound Valves vtp-101 Schematic
  202. ~17-18w sweep tube with large plate cap
  203. Fisher 500B Comparison
  204. New build of P-P PCL86 Amp
  205. Transformer question
  206. Can 110V Quad IIs be configured to 220V?
  207. Advice needed re repairing Audio Research VT100
  208. Yaqin SD-CD3 Tube Buffer - upgrading caps
  209. Best value speakers
  210. Peavey Windsor Studio The output tube El 34 burned out
  211. Gyrator PSU's in tube amps
  212. EL34 Amp Running KT66, Safe ?
  213. MJ Optimized Valve Regulator
  214. Need JAN 6418 tube stereo headphone preamp kit advice!
  215. Electronic choke
  216. Can you please help identifying this amp?
  217. [TubeAmp] Beginner's questions
  218. .47uF output cap to 1uF?
  219. Spark gaps on output transformers
  220. St 35 or St 70?
  221. Pi wound output transformers
  222. miniatures 6n1p 6n2p
  223. Begginer questions about a guitar pre amp
  224. HK Citation V schematic?
  225. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  226. Physical Oscillating noise from phono stage
  227. PP 6c33c-b
  228. Modifying the classic Williamson
  229. eimac 152TL and 304TL
  230. LTspice model for Dynaco A470 Output Transfomer
  231. audiodesignguide.com PP KT88
  232. One more 4P1L SE
  233. Mount rectifier above torroidal transformer?
  234. Extending Tube Sockets off a PCB
  235. EMG 200 tube tester
  236. Looking for a great starter stereo P-P amp
  237. Question regarding value of Telefunken tubes.
  238. Magic Eye tube
  239. Partridge Transformers
  240. 6CG7 replacing E88CC in SE KT88 Amp.
  241. Omit the filament windings -- LTM8033 from Linear
  242. Best position for bleeder resistor?
  243. anyone have experience with a Radio Craftsmen C400?
  244. Amp-A, a variation to the EL84 Push Pull theme
  245. tony's 6LU8 push-pull power amp build
  246. First Post Here
  247. MFA Lumi sings high-pitched tunes
  248. Power tubes not drawing current
  249. replacing tubes with circuitry
  250. High Voltage Regulators (Maida or zener)

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