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

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