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  1. moviola tubes -- other names?
  2. DHT with TDA1541A in a NOS DAC?
  3. 6C33C-B Tube Tester
  4. VT100mk2 - Retubing
  5. Parallel 6L6 se iron suggestion.
  6. 6N2 Tube Srpp Drive Stage
  7. Unexpectedly good EL84 amp
  8. Kypo Electronic - Buffer, Preamp & Amp kits
  9. PSU bypass cap type
  10. Yaqin MC10-T
  11. Yaqin MC10-L Need help collating data
  12. Wanted: High Quality Complete tube NOS DAC with TDA1541A
  13. 6360 or 6939 as a phase inverter
  14. Peerless 16687 & 7142 Transformer Identification
  15. Wanted: High Quality DIY Tube NOS DAC with TDA1541A
  16. Restoration of leak stereo 20: advice pls
  17. DC Tube Heaters
  18. Musical Paradise MP-428 300B Amplifier
  19. Tube regulator
  20. Why overvoltage on HT?
  21. 50c5 schematic question
  22. Me again... matrix decoding w/ tubes?
  23. chapman 305 transformer wiring
  24. tube rolling el34 need advice
  25. Adding resistance to OT circuit.
  26. Tube pre-amp + Class-D amp. any experience?
  27. Bias using a ccs as an anode load
  28. Magnepan High Frequency Tube Amp
  29. Home-Made Plate Curves
  30. Vacuum Tube Audio PH-11
  31. Latest project SRPP valve front end with class D MOSFET output stage.
  32. Melos 400 restoration project - need help (unaltered reference needed)
  33. Comparison of Sovtek 5751 and RCA 5751
  34. Replacing electrolytic caps
  35. Heater supply for the 866a
  36. How good is good enough when designing a line stage?
  37. Cathode/plate resistors ??
  38. Tubes and LTspice?
  39. Is this an oscillation problem? -broskie CCA linestage
  40. Simple Octal SET help.
  41. Capacitor Sanity Check
  42. VTVM substitute?
  43. What music/sound style for 845 tubes?
  44. Advice Needed
  45. Favorite ouput tube (SE only)
  46. Best make of audio valves/tubes
  47. How to calculate source impedance for audio transformer?
  48. Schematic for REDDi DI-Box?
  49. what the best kit for Dynaco
  50. That mystery trem cap
  51. A Hot Rodded Bottlehead S.E.X. Amplifier
  52. Cheap Chinese amps
  53. Wanted: Leak ST-50 Mains transformer 240V
  54. Who makes their own OPT around here?
  55. 71A
  56. Sound quality chinese tube amplifiers
  57. freeware circuit simulator for Osx (Mac)
  58. 12ax7LP substitute
  59. RH84 SE Build and custom Edcor power transformer
  60. 6l6 se primary impedance choice
  61. Luxman SQ38FD mkII, schematic
  62. 6c33 SET (my next project). Need some feedback
  63. Amorphous iron UMCCC-125: what would you do from it?
  64. Old Fisher SA-300 Amp help!
  65. What kind of sound does a noisy 12B4 make ??
  66. KT88 bias current keeps drifting
  67. Oddball Tube - Useful for Audio??
  68. 12AX7 dual triode "Signal Enhancer/Conditioner"
  69. 2nos of 6l6 in Parallel SE mode
  70. Output transformer selection
  71. 5C8S rectifier psud2 modle/rectifier information
  72. EF80 / KT77 SIngle Ended
  73. Longevity of output tubes in triode vs pentode
  74. ekco ui59 receiver
  75. simple heater question .....
  76. Different Differential Pairs
  77. Decware Zen SET (first project/90% finished)
  78. YL-1200 for audioamp
  79. 7984's
  80. Building First Preamp HELP
  81. Aikido All-In-One Octal B+ measurement.
  82. OPT PP for GU50 Triode ?
  83. Requesting input on preamp schematic
  84. Longer life 6CA7's for class A
  85. Organ split
  86. Two amps done and done!
  87. Testing the 5842/417a on Sencore MU150?
  88. Tube ID
  89. How to best drive an 845?
  90. K-16ls + ton pcb (just finished pics)
  91. Helios + Pultec tube EQ rack prototype.
  92. 12ax7 preamplifier with modified power supply!!! please help!
  93. tube amp prototype with pc
  94. Looking for a new diy project
  95. To James or to Baxandall?
  96. 45 triode : max 275 or 300 vdc ?
  97. Anyone with experience breaking in capacitors out of circuit?
  98. Vt-64/800 tube amp/preamp
  99. Hammond 1609 Output Transformer - EL84
  100. Chinese Capacitors
  101. 60 Watts A Channel 6528A Tube Amp
  102. AC or DC heathing?
  103. 1000W tube amplifier
  104. LEDs or RC?
  105. Is this amp worth bringing back to life?
  106. Melody PM845
  107. Need help troubleshooting this integrated.
  108. Wanted...design for D3a triode strapped driving 45
  109. Removing Tone Controls from VoM Preamp/Amp
  110. Philips 8580 useful anywhere?
  111. output transformer info
  112. 100Hz square preamp responce help
  113. 6P21s 6n21c tube, True Direct Heater?
  114. Convert Dogzilla for Hi-Fi output
  115. Bogen AP-35 Static and Pop from one channel
  116. EL34 PP triode mode hums
  117. Rectifiers
  118. Yaqin MC 10l problem
  119. Stripping Edcor's powder coating
  120. 5Y3 with slow warm up input and output tubes
  121. power transformer question
  122. DHT heaters . and their property"s
  123. Power Tube Cathode Resistor "distance"
  124. Does the same output power from tube amp and ss amp have difference?
  125. 32 Channel Microphone Preamp
  126. Field coil questions
  127. MC240 found in a shed.
  128. "Impossible" circuit which seems to amplify anyway.
  129. EL84 driving EL84 SEP
  130. Tube buffer for MosFet Citation 12
  131. Building a better power Triode
  132. Original KT88? or not
  133. Moscode 300 Upgrade
  134. Onwer's Manual for Realistic SAF-24D
  135. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  136. 6J4 Experiment!
  137. Anyone build Broskie's T8 OTL?
  138. Just WHY are DHT tubes SO Expensive....?
  139. Two chassis grounding
  140. Tubes vs. Caps?
  141. Impedance and output transformer selection question
  142. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  143. What kind of tube did I use back then?
  144. Wanted: Vacuum Tube Phono Preamp for PAS
  145. Lower gain in YS Audio linestage
  146. Converting 12FQ8 for 12AX7 , HELP !!!
  147. Transformer Inquiry
  148. Pitfalls of paralleling different resistor brands?
  149. Question about rp and the AC load line
  150. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  151. What is it about SET's?
  152. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  153. A small help with russian low voltage tube
  154. Acoustic (not Audio) Alchemy Labs
  155. Mullard 404? ECL82 amp
  156. OP & tube power transormers
  157. EML 300B-XLS Schematic?
  158. Experiences with TAD EL34?
  159. C3g simulation model
  160. ok maybe im just a newb when it comes to amps but...
  161. Yet another compactron to play with...
  162. Weird heater arrangement 12ax7/6bm8
  163. I love SET can we fix what I hate?
  164. Tony's 6H32 pre-amp
  165. To tone control or not to...
  166. EL84 plate voltage.
  167. 6bx7
  168. Anyone in the L.A. area with scope willing to troubleshoot?
  169. Transformers in series OK?
  170. Russian 6CA4/EZ81 Equivalent?
  171. Amp build recomendation.. for Frazier model sevens
  172. How can I make a DIY AC probe for my DMM
  173. PSUDII Question
  174. EH KT88 Glowing Welds?
  175. Not quite DIY
  176. Searching for a TUBE datasheet GE GL-421
  177. 6EM7 Unit 1
  178. woohoo! RDH4!!!
  179. VTL hum
  180. Use CL-90 to slow 5Y3?
  181. Allen Wright, 1947-2011
  182. Octaves/Ghost notes from Bogen K10. Caps?
  183. Q1, 300B S-Splot, 360V 60mA? Q2, James 6112HS or 6123HS?
  184. What audio output xfmr for a 6BM8 pp amp?
  185. Parafeeding an EL84 SE(T)
  186. Interesting video from the production of KR tubes
  187. Gassy WE 300b
  188. Bogen Pa Identification 6l6 x 4 dual rectifier
  189. SE output transformer DIY
  190. Tektronix TDS714L or other Tek TDS series digital oscilloscope for stereo?
  191. AA 151 or Scott 222
  192. Toroidal Output Transformer
  193. Hytron HY615 Data ???
  194. Can I use a 12AX7 with CT 6.3V?
  195. torroidal power transformers
  196. What amp is this
  197. B+ ramping up before CCS filament - danger?
  198. Recommend a good plate choke for 26 tube!!
  199. S11E12 TUBES
  200. Low dropout 6.3v
  201. how to adjust the filament power ecc83
  202. Cary/AES - AE3 Linestage Help Needed !
  203. 5867a
  204. 6V6/12AX7 Project Question/Help
  205. Ultra Linear Push Pull Tube amp
  206. A little help with 6v6 screen needed.
  207. Output Transformers... Decisions Decisions
  208. Need Help. PSU not voltage down from design
  209. D/A preamp FFT measurements for review plz
  210. Type 40, 12A, 112A(syl)
  211. American Audio Picker
  212. one half of a tube in schematic????
  213. estimating power rating of Telefunken transformer
  214. Where is mistake??
  215. Building a 6s45P amp - transformer help
  216. High-End preamplifier with ECC82!
  217. Attempting to recap a couple of old Ampex 2010 suitcase amps
  218. Hi specs rectifier needed
  219. Lux 6056N Interstage Transformer
  220. Aikido Line Stage / Buffer
  221. JJ KT88s and other octals
  222. Triodes from Russia
  223. Little help needed / do I have a bad tube or really good tube?
  224. 5.1 channel 807 SE amplifier
  225. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  226. Voltage multiplier vs transformer for preamp HV power supply
  227. does tube bias drift like silicon devices
  228. What are the best pots for less than $50 each?
  229. Best EL34 For Triode mode
  230. ASL AQ 1002 PP KT88 problem with input stage
  231. 2A3 Amp schematic suggestions?
  232. what I need for safe use mercury rectifier
  233. Anybody listened to Glow Audio?
  234. Tubes too close to output transformers?
  235. Help with stereo to mono for project
  236. MC3500 with 807 tubes and modern driver tubes
  237. Multiple Film Caps in parallel, Problems?
  238. I need a project......preferably a HIFI amp..........
  239. Aguilar DB-900 question
  240. REN904 for linestage?
  241. Urgent advice on Chinese purchase please!
  242. VR tubes, minimum current
  243. Senior Project Tube Preamp
  244. Antek AS-4T430 measurements
  245. small, light dc coupled 6ea7 amp sanity check
  246. 6S33S SE Transformer Set
  247. I think I blew my amp!! plase help
  248. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  249. testing 6550's on a Hickok 539b, same as KT88?
  250. 9V tube drive pedals - worth it?

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