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  1. Fender champ circuit low output.
  2. ekco ui59 receiver
  3. simple heater question .....
  4. Different Differential Pairs
  5. Decware Zen SET (first project/90% finished)
  6. YL-1200 for audioamp
  7. 7984's
  8. Building First Preamp HELP
  9. Aikido All-In-One Octal B+ measurement.
  10. OPT PP for GU50 Triode ?
  11. Requesting input on preamp schematic
  12. Longer life 6CA7's for class A
  13. Organ split
  14. Two amps done and done!
  15. Testing the 5842/417a on Sencore MU150?
  16. Why Class A Guitar Amplifiers Sound So Good ........
  17. Tube ID
  18. How to best drive an 845?
  19. K-16ls + ton pcb (just finished pics)
  20. Helios + Pultec tube EQ rack prototype.
  21. 12ax7 preamplifier with modified power supply!!! please help!
  22. tube amp prototype with pc
  23. Looking for a new diy project
  24. To James or to Baxandall?
  25. 45 triode : max 275 or 300 vdc ?
  26. Anyone with experience breaking in capacitors out of circuit?
  27. Vt-64/800 tube amp/preamp
  28. Hammond 1609 Output Transformer - EL84
  29. Chinese Capacitors
  30. 60 Watts A Channel 6528A Tube Amp
  31. AC or DC heathing?
  32. 1000W tube amplifier
  33. LEDs or RC?
  34. Is this amp worth bringing back to life?
  35. Melody PM845
  36. Need help troubleshooting this integrated.
  37. Wanted...design for D3a triode strapped driving 45
  38. Removing Tone Controls from VoM Preamp/Amp
  39. Philips 8580 useful anywhere?
  40. output transformer info
  41. 100Hz square preamp responce help
  42. 6P21s 6n21c tube, True Direct Heater?
  43. Convert Dogzilla for Hi-Fi output
  44. Bogen AP-35 Static and Pop from one channel
  45. EL34 PP triode mode hums
  46. Rectifiers
  47. Yaqin MC 10l problem
  48. Stripping Edcor's powder coating
  49. 5Y3 with slow warm up input and output tubes
  50. power transformer question
  51. DHT heaters . and their property"s
  52. Power Tube Cathode Resistor "distance"
  53. Does the same output power from tube amp and ss amp have difference?
  54. 32 Channel Microphone Preamp
  55. Field coil questions
  56. MC240 found in a shed.
  57. "Impossible" circuit which seems to amplify anyway.
  58. EL84 driving EL84 SEP
  59. Tube buffer for MosFet Citation 12
  60. Building a better power Triode
  61. Original KT88? or not
  62. Moscode 300 Upgrade
  63. Onwer's Manual for Realistic SAF-24D
  64. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  65. 6J4 Experiment!
  66. Anyone build Broskie's T8 OTL?
  67. Just WHY are DHT tubes SO Expensive....?
  68. Two chassis grounding
  69. Tubes vs. Caps?
  70. Impedance and output transformer selection question
  71. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  72. peavey tube amplifiers
  73. Stark 9-66 tester repair
  74. 5e7 bandmaster build q's
  75. What kind of tube did I use back then?
  76. Wanted: Vacuum Tube Phono Preamp for PAS
  77. Lower gain in YS Audio linestage
  78. Converting 12FQ8 for 12AX7 , HELP !!!
  79. Transformer Inquiry
  80. Gibson BR-9 Tube Amp Issues
  81. Stromberg-Carlson AU-35 PA Amp for Guitar
  82. Pitfalls of paralleling different resistor brands?
  83. Question about rp and the AC load line
  84. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  85. What is it about SET's?
  86. Help with Power cable on guitar amp
  87. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  88. A small help with russian low voltage tube
  89. EL34 vs 6L6 for HiFi
  90. Acoustic (not Audio) Alchemy Labs
  91. Mullard 404? ECL82 amp
  92. OP & tube power transormers
  93. EML 300B-XLS Schematic?
  94. Experiences with TAD EL34?
  95. C3g simulation model
  96. ok maybe im just a newb when it comes to amps but...
  97. Yet another compactron to play with...
  98. Weird heater arrangement 12ax7/6bm8
  99. I love SET can we fix what I hate?
  100. Tony's 6H32 pre-amp
  101. rebias guitar amp if using same tubes???
  102. To tone control or not to...
  103. EL84 plate voltage.
  104. 6bx7
  105. Anyone in the L.A. area with scope willing to troubleshoot?
  106. Transformers in series OK?
  107. Russian 6CA4/EZ81 Equivalent?
  108. Amp build recomendation.. for Frazier model sevens
  109. How can I make a DIY AC probe for my DMM
  110. PSUDII Question
  111. EH KT88 Glowing Welds?
  112. Not quite DIY
  113. Searching for a TUBE datasheet GE GL-421
  114. 6EM7 Unit 1
  115. woohoo! RDH4!!!
  116. VTL hum
  117. Use CL-90 to slow 5Y3?
  118. Allen Wright, 1947-2011
  119. Octaves/Ghost notes from Bogen K10. Caps?
  120. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  121. What audio output xfmr for a 6BM8 pp amp?
  122. Parafeeding an EL84 SE(T)
  123. Interesting video from the production of KR tubes
  124. Gassy WE 300b
  125. Bogen Pa Identification 6l6 x 4 dual rectifier
  126. SE output transformer DIY
  127. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  128. AA 151 or Scott 222
  129. Toroidal Output Transformer
  130. Hytron HY615 Data ???
  131. Can I use a 12AX7 with CT 6.3V?
  132. torroidal power transformers
  133. What amp is this
  134. B+ ramping up before CCS filament - danger?
  135. Telefunken Magnetophon 85 --> EL95 Guitar amp
  136. Recommend a good plate choke for 26 tube!!
  137. S11E12 TUBES
  138. Low dropout 6.3v
  139. how to adjust the filament power ecc83
  140. Cary/AES - AE3 Linestage Help Needed !
  141. 5867a
  142. 6V6/12AX7 Project Question/Help
  143. Ultra Linear Push Pull Tube amp
  144. A little help with 6v6 screen needed.
  145. Output Transformers... Decisions Decisions
  146. Need Help. PSU not voltage down from design
  147. D/A preamp FFT measurements for review plz
  148. Type 40, 12A, 112A(syl)
  149. American Audio Picker
  150. one half of a tube in schematic????
  151. estimating power rating of Telefunken transformer
  152. Where is mistake??
  153. Building a 6s45P amp - transformer help
  154. High-End preamplifier with ECC82!
  155. Attempting to recap a couple of old Ampex 2010 suitcase amps
  156. Hi specs rectifier needed
  157. Lux 6056N Intertstage Transformer
  158. Aikido Line Stage / Buffer
  159. JJ KT88s and other octals
  160. Triodes from Russia
  161. Little help needed / do I have a bad tube or really good tube?
  162. 5.1 channel 807 SE amplifier
  163. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  164. Voltage multiplier vs transformer for preamp HV power supply
  165. does tube bias drift like silicon devices
  166. What are the best pots for less than $50 each?
  167. Best EL34 For Triode mode
  168. ASL AQ 1002 PP KT88 problem with input stage
  169. 2A3 Amp schematic suggestions?
  170. what I need for safe use mercury rectifier
  171. Anybody listened to Glow Audio?
  172. Tubes too close to output transformers?
  173. Help with stereo to mono for project
  174. MC3500 with 807 tubes and modern driver tubes
  175. Multiple Film Caps in parallel, Problems?
  176. I need a project......preferably a HIFI amp..........
  177. Aguilar DB-900 question
  178. REN904 for linestage?
  179. Urgent advice on Chinese purchase please!
  180. VR tubes, minimum current
  181. Senior Project Tube Preamp
  182. Antek AS-4T430 measurements
  183. small, light dc coupled 6ea7 amp sanity check
  184. 6S33S SE Transformer Set
  185. I think I blew my amp!! plase help
  186. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  187. testing 6550's on a Hickok 539b, same as KT88?
  188. 9V tube drive pedals - worth it?
  189. Music Angel XD-850MKIII 300b integrated amp
  190. 8150's
  191. More junk from China
  192. 6GM8 above 8mA/24V
  193. One Tube Sound Better Than Four?
  194. HK Citation V rebuild - any advice?
  195. 6GM8/ECC86
  196. Sound Valves vtp-101 Schematic
  197. ~17-18w sweep tube with large plate cap
  198. Fisher 500B Comparison
  199. New build of P-P PCL86 Amp
  200. Transformer question
  201. Can 110V Quad II´s be configured to 220V?
  202. Advice needed re repairing Audio Research VT100
  203. Yaqin SD-CD3 Tube Buffer - upgrading caps
  204. Best value speakers
  205. Peavey Windsor Studio The output tube El 34 burned out
  206. Gyrator PSU's in tube amps
  207. EL34 Amp Running KT66, Safe ?
  208. MJ Optimized Valve Regulator
  209. Need JAN 6418 tube stereo headphone preamp kit advice!
  210. Electronic choke
  211. Can you please help identifying this amp?
  212. [TubeAmp] Beginner's questions
  213. .47uF output cap to 1uF?
  214. Spark gaps on output transformers
  215. St 35 or St 70?
  216. Pi wound output transformers
  217. miniatures 6n1p 6n2p
  218. Begginer questions about a guitar pre amp
  219. HK Citation V schematic?
  220. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  221. Physical Oscillating noise from phono stage
  222. PP 6c33c-b
  223. Modifying the classic Williamson
  224. eimac 152TL and 304TL
  225. LTspice model for Dynaco A470 Output Transfomer
  226. audiodesignguide.com PP KT88
  227. One more 4P1L SE
  228. Mount rectifier above torroidal transformer?
  229. Extending Tube Sockets off a PCB
  230. EMG 200 tube tester
  231. Looking for a great starter stereo P-P amp
  232. Question regarding value of Telefunken tubes.
  233. Magic Eye tube
  234. Partridge Transformers
  235. 6CG7 replacing E88CC in SE KT88 Amp.
  236. Omit the filament windings -- LTM8033 from Linear
  237. Best position for bleeder resistor?
  238. anyone have experience with a Radio Craftsmen C400?
  239. Amp-A, a variation to the EL84 Push Pull theme
  240. tony's 6LU8 push-pull power amp build
  241. First Post Here
  242. MFA Lumi sings high-pitched tunes
  243. Power tubes not drawing current
  244. replacing tubes with circuitry
  245. High Voltage Regulators (Maida or zener)
  246. GU-81m tube amp schematics???
  247. Suggestions on SIPP driver stage
  248. How to eliminate the "white noise" for the 300B tube amp?
  249. 6BQ5 UL Curves?
  250. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?