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  1. Schematic for REDDi DI-Box?
  2. what the best kit for Dynaco
  3. That mystery trem cap
  4. A Hot Rodded Bottlehead S.E.X. Amplifier
  5. Cheap Chinese amps
  6. Wanted: Leak ST-50 Mains transformer 240V
  7. Eico HF-20 to bass guitar amp
  8. Ampeg B-18 issue/debug
  9. Who makes their own OPT around here?
  10. 71A
  11. Sound quality chinese tube amplifiers
  12. freeware circuit simulator for Osx (Mac)
  13. 12ax7LP substitute
  14. RH84 SE Build and custom Edcor power transformer
  15. 6l6 se primary impedance choice
  16. Luxman SQ38FD mkII, schematic
  17. 6c33 SET (my next project). Need some feedback
  18. Amorphous iron UMCCC-125: what would you do from it?
  19. Old Fisher SA-300 Amp help!
  20. What kind of sound does a noisy 12B4 make ??
  21. KT88 bias current keeps drifting
  22. Oddball Tube - Useful for Audio??
  23. 12AX7 dual triode "Signal Enhancer/Conditioner"
  24. 2nos of 6l6 in Parallel SE mode
  25. Output transformer selection
  26. 5C8S rectifier psud2 modle/rectifier information
  27. EF80 / KT77 SIngle Ended
  28. Longevity of output tubes in triode vs pentode
  29. Fender champ circuit low output.
  30. ekco ui59 receiver
  31. simple heater question .....
  32. Different Differential Pairs
  33. Decware Zen SET (first project/90% finished)
  34. YL-1200 for audioamp
  35. 7984's
  36. Building First Preamp HELP
  37. Aikido All-In-One Octal B+ measurement.
  38. OPT PP for GU50 Triode ?
  39. Requesting input on preamp schematic
  40. Longer life 6CA7's for class A
  41. Organ split
  42. Two amps done and done!
  43. Testing the 5842/417a on Sencore MU150?
  44. Why Class A Guitar Amplifiers Sound So Good ........
  45. Tube ID
  46. How to best drive an 845?
  47. K-16ls + ton pcb (just finished pics)
  48. Helios + Pultec tube EQ rack prototype.
  49. 12ax7 preamplifier with modified power supply!!! please help!
  50. tube amp prototype with pc
  51. Looking for a new diy project
  52. To James or to Baxandall?
  53. 45 triode : max 275 or 300 vdc ?
  54. Anyone with experience breaking in capacitors out of circuit?
  55. Vt-64/800 tube amp/preamp
  56. Hammond 1609 Output Transformer - EL84
  57. Chinese Capacitors
  58. 60 Watts A Channel 6528A Tube Amp
  59. AC or DC heathing?
  60. 1000W tube amplifier
  61. LEDs or RC?
  62. Is this amp worth bringing back to life?
  63. Melody PM845
  64. Need help troubleshooting this integrated.
  65. Wanted...design for D3a triode strapped driving 45
  66. Removing Tone Controls from VoM Preamp/Amp
  67. Philips 8580 useful anywhere?
  68. output transformer info
  69. design & build 300w ot & pt
  70. 100Hz square preamp responce help
  71. 6P21s 6n21c tube, True Direct Heater?
  72. Convert Dogzilla for Hi-Fi output
  73. Bogen AP-35 Static and Pop from one channel
  74. EL34 PP triode mode hums
  75. Rectifiers
  76. Yaqin MC 10l problem
  77. Stripping Edcor's powder coating
  78. 5Y3 with slow warm up input and output tubes
  79. power transformer question
  80. DHT heaters . and their property"s
  81. Power Tube Cathode Resistor "distance"
  82. Does the same output power from tube amp and ss amp have difference?
  83. 32 Channel Microphone Preamp
  84. Tube pre into a solid state
  85. Field coil questions
  86. MC240 found in a shed.
  87. "Impossible" circuit which seems to amplify anyway.
  88. EL84 driving EL84 SEP
  89. Tube buffer for MosFet Citation 12
  90. Building a better power Triode
  91. Original KT88? or not
  92. Moscode 300 Upgrade
  93. Onwer's Manual for Realistic SAF-24D
  94. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  95. 6J4 Experiment!
  96. Anyone build Broskie's T8 OTL?
  97. Just WHY are DHT tubes SO Expensive....?
  98. Two chassis grounding
  99. Tubes vs. Caps?
  100. Impedance and output transformer selection question
  101. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  102. peavey tube amplifiers
  103. Stark 9-66 tester repair
  104. 5e7 bandmaster build q's
  105. What kind of tube did I use back then?
  106. Wanted: Vacuum Tube Phono Preamp for PAS
  107. Lower gain in YS Audio linestage
  108. Converting 12FQ8 for 12AX7 , HELP !!!
  109. Transformer Inquiry
  110. Gibson BR-9 Tube Amp Issues
  111. Stromberg-Carlson AU-35 PA Amp for Guitar
  112. Pitfalls of paralleling different resistor brands?
  113. Question about rp and the AC load line
  114. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  115. What is it about SET's?
  116. Help with Power cable on guitar amp
  117. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  118. A small help with russian low voltage tube
  119. EL34 vs 6L6 for HiFi
  120. Acoustic (not Audio) Alchemy Labs
  121. Mullard 404? ECL82 amp
  122. OP & tube power transormers
  123. EML 300B-XLS Schematic?
  124. Experiences with TAD EL34?
  125. C3g simulation model
  126. ok maybe im just a newb when it comes to amps but...
  127. Yet another compactron to play with...
  128. Weird heater arrangement 12ax7/6bm8
  129. I love SET can we fix what I hate?
  130. Tony's 6H32 pre-amp
  131. rebias guitar amp if using same tubes???
  132. To tone control or not to...
  133. EL84 plate voltage.
  134. 6bx7
  135. Anyone in the L.A. area with scope willing to troubleshoot?
  136. Transformers in series OK?
  137. Russian 6CA4/EZ81 Equivalent?
  138. Amp build recomendation.. for Frazier model sevens
  139. How can I make a DIY AC probe for my DMM
  140. PSUDII Question
  141. EH KT88 Glowing Welds?
  142. Not quite DIY
  143. Searching for a TUBE datasheet GE GL-421
  144. 6EM7 Unit 1
  145. woohoo! RDH4!!!
  146. VTL hum
  147. Use CL-90 to slow 5Y3?
  148. Allen Wright, 1947-2011
  149. Octaves/Ghost notes from Bogen K10. Caps?
  150. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  151. What audio output xfmr for a 6BM8 pp amp?
  152. Parafeeding an EL84 SE(T)
  153. Interesting video from the production of KR tubes
  154. Gassy WE 300b
  155. Bogen Pa Identification 6l6 x 4 dual rectifier
  156. SE output transformer DIY
  157. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  158. AA 151 or Scott 222
  159. Toroidal Output Transformer
  160. Hytron HY615 Data ???
  161. Can I use a 12AX7 with CT 6.3V?
  162. torroidal power transformers
  163. What amp is this
  164. B+ ramping up before CCS filament - danger?
  165. Telefunken Magnetophon 85 --> EL95 Guitar amp
  166. Recommend a good plate choke for 26 tube!!
  167. S11E12 TUBES
  168. Low dropout 6.3v
  169. how to adjust the filament power ecc83
  170. Cary/AES - AE3 Linestage Help Needed !
  171. 5867a
  172. 6V6/12AX7 Project Question/Help
  173. Ultra Linear Push Pull Tube amp
  174. A little help with 6v6 screen needed.
  175. Output Transformers... Decisions Decisions
  176. Need Help. PSU not voltage down from design
  177. D/A preamp FFT measurements for review plz
  178. Type 40, 12A, 112A(syl)
  179. American Audio Picker
  180. one half of a tube in schematic????
  181. estimating power rating of Telefunken transformer
  182. Where is mistake??
  183. Building a 6s45P amp - transformer help
  184. High-End preamplifier with ECC82!
  185. Attempting to recap a couple of old Ampex 2010 suitcase amps
  186. Hi specs rectifier needed
  187. Lux 6056N Intertstage Transformer
  188. Aikido Line Stage / Buffer
  189. JJ KT88s and other octals
  190. Triodes from Russia
  191. Little help needed / do I have a bad tube or really good tube?
  192. 5.1 channel 807 SE amplifier
  193. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  194. Voltage multiplier vs transformer for preamp HV power supply
  195. does tube bias drift like silicon devices
  196. What are the best pots for less than $50 each?
  197. Best EL34 For Triode mode
  198. ASL AQ 1002 PP KT88 problem with input stage
  199. 2A3 Amp schematic suggestions?
  200. what I need for safe use mercury rectifier
  201. Anybody listened to Glow Audio?
  202. Tubes too close to output transformers?
  203. Help with stereo to mono for project
  204. MC3500 with 807 tubes and modern driver tubes
  205. Multiple Film Caps in parallel, Problems?
  206. I need a project......preferably a HIFI amp..........
  207. Aguilar DB-900 question
  208. REN904 for linestage?
  209. Urgent advice on Chinese purchase please!
  210. VR tubes, minimum current
  211. Senior Project Tube Preamp
  212. Antek AS-4T430 measurements
  213. small, light dc coupled 6ea7 amp sanity check
  214. 6S33S SE Transformer Set
  215. I think I blew my amp!! plase help
  216. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  217. testing 6550's on a Hickok 539b, same as KT88?
  218. 9V tube drive pedals - worth it?
  219. Music Angel XD-850MKIII 300b integrated amp
  220. 8150's
  221. More junk from China
  222. 6GM8 above 8mA/24V
  223. One Tube Sound Better Than Four?
  224. HK Citation V rebuild - any advice?
  225. 6GM8/ECC86
  226. Sound Valves vtp-101 Schematic
  227. ~17-18w sweep tube with large plate cap
  228. Fisher 500B Comparison
  229. New build of P-P PCL86 Amp
  230. Transformer question
  231. Can 110V Quad II´s be configured to 220V?
  232. Advice needed re repairing Audio Research VT100
  233. Yaqin SD-CD3 Tube Buffer - upgrading caps
  234. Best value speakers
  235. Peavey Windsor Studio The output tube El 34 burned out
  236. Gyrator PSU's in tube amps
  237. EL34 Amp Running KT66, Safe ?
  238. MJ Optimized Valve Regulator
  239. Need JAN 6418 tube stereo headphone preamp kit advice!
  240. Electronic choke
  241. Can you please help identifying this amp?
  242. [TubeAmp] Beginner's questions
  243. .47uF output cap to 1uF?
  244. Spark gaps on output transformers
  245. St 35 or St 70?
  246. Pi wound output transformers
  247. miniatures 6n1p 6n2p
  248. Begginer questions about a guitar pre amp
  249. HK Citation V schematic?
  250. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project