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  1. Need help modifying tube bias circuit
  2. filament transformer current rating
  3. SE OT power tube suggestions please!
  4. What is up with this wave form?
  5. Volume Controls
  6. Help identifying driver stage
  7. Tube mixing console
  8. Uses for Cheapo 6CB5
  9. Twin DN2540 in TubelabSE?
  10. Bias or loss of power in one channel problem
  11. Drilling a hole in a Tube :)
  12. Tube stage placement in a mongrel (hybrid) amp
  13. Tubelab Single Ended
  14. Quad KT88 driver
  15. Single Ended Output Transformer
  16. SE P-P guitar amp.
  17. 300B with interstage
  18. Problem with Aria (Meng) Mini 6p1 (glowing plate)
  19. possible to filter dips in AC line?
  20. Weston Ammeter Headphone Amp Prototype
  21. What is the fault with this amp?
  22. k-12G turret board version
  23. low voltage "high gain" amp
  24. Wanted: ELNA Cerafine 10000uf 63v New or used
  25. Connect ipod/laptop to old 1950's radio
  26. Percieved Power outputs Tube vs Solid State
  27. (Weston Ammeter Headphone Amp Redux ?)
  28. Tube guitar amp for acoustic guitar?
  29. Would it be possible to drive a 300b with new power jfets?
  30. Would it be possible to drive a 300b with new power jfets?
  31. Will KT88 increase output power in Copland CTA-402
  32. Music Angel XD-SE EL34 intermittent thump
  33. OPT with cathode feedback
  34. Rebuilding fisher sa-1000
  35. Little Dot Mk IV SE
  36. EF86 on HICKOK 752a tester..??
  37. Choke power supplies and bypassing.
  38. Load resistor on OPT
  39. Ultimate Octal
  40. Help needed for 6H30 output schematic for DAC
  41. KT88 doubt
  42. Leave it on or turn it off?
  43. 6y6 output tube and Fender Champ(ion)
  44. Did I do this loadline correctly
  45. Masco MA-35 rebuild
  46. Motorola SE console amp blown fuse
  47. What to do with Telefunken parts?
  48. OT as buffer?
  49. Single ended EL84 Schematic
  50. Pattern for power xmfr magnetic leaking ?
  51. heater voltage
  52. Small Speakers for 5 channel single ended amp
  53. missing circuit components- why?
  54. valve rectifier series resistors
  55. What to do with a 6N14P/ECC84
  56. Info for very rare neon tubes?
  57. Fender 5F1 Champ clone with triode mode
  58. UL for EL84. 22-24% is better than the dogma....40% is lowest distortion....
  59. Jan Tube question
  60. 60 watt tubeamp with Low B+
  61. What types of SET rock the hardest?
  62. UTC A16 interstage 300B
  63. 6C33
  64. Need wiring schematic for Conn 6050 amp
  65. 6N6P at very low voltage
  66. My lineamp, Circuit of MATISSE ATOM
  67. Transformer Swap
  68. Need help building a tube linestage for my gainclone
  69. Ping SY: His Master's Noise
  70. Wollensak SE 7591 parts projects?
  71. 807 screen voltage help
  72. My little 801A power amplifier
  73. Help needed finding a small DPST switch - confused!
  74. Help with bias pot- wont adjust!
  75. 6N6P / ECC99 / E182CC
  76. bias question
  77. Really low parts could el84 pp design for a beginner?
  78. moviola tubes -- other names?
  79. DHT with TDA1541A in a NOS DAC?
  80. 6C33C-B Tube Tester
  81. VT100mk2 - Retubing
  82. Parallel 6L6 se iron suggestion.
  83. 6N2 Tube Srpp Drive Stage
  84. Unexpectedly good EL84 amp
  85. Kypo Electronic - Buffer, Preamp & Amp kits
  86. PSU bypass cap type
  87. Yaqin MC10-T
  88. Yaqin MC10-L Need help collating data
  89. Wanted: High Quality Complete tube NOS DAC with TDA1541A
  90. 6360 or 6939 as a phase inverter
  91. Peerless 16687 & 7142 Transformer Identification
  92. Wanted: High Quality DIY Tube NOS DAC with TDA1541A
  93. Restoration of leak stereo 20: advice pls
  94. DC Tube Heaters
  95. Musical Paradise MP-428 300B Amplifier
  96. Tube regulator
  97. Why overvoltage on HT?
  98. 50c5 schematic question
  99. Me again... matrix decoding w/ tubes?
  100. chapman 305 transformer wiring
  101. tube rolling el34 need advice
  102. Adding resistance to OT circuit.
  103. Tube pre-amp + Class-D amp. any experience?
  104. Bias using a ccs as an anode load
  105. Magnepan High Frequency Tube Amp
  106. Home-Made Plate Curves
  107. Vacuum Tube Audio PH-11
  108. Latest project SRPP valve front end with class D MOSFET output stage.
  109. Melos 400 restoration project - need help (unaltered reference needed)
  110. Comparison of Sovtek 5751 and RCA 5751
  111. Replacing electrolytic caps
  112. Heater supply for the 866a
  113. How good is good enough when designing a line stage?
  114. Cathode/plate resistors ??
  115. Tubes and LTspice?
  116. Is this an oscillation problem? -broskie CCA linestage
  117. Simple Octal SET help.
  118. Capacitor Sanity Check
  119. VTVM substitute?
  120. Caps - Mundorf Silver/oil vs silver/gold/oil
  121. What music/sound style for 845 tubes?
  122. Advice Needed
  123. Favorite ouput tube (SE only)
  124. Best make of audio valves/tubes
  125. How to calculate source impedance for audio transformer?
  126. Schematic for REDDi DI-Box?
  127. what the best kit for Dynaco
  128. That mystery trem cap
  129. A Hot Rodded Bottlehead S.E.X. Amplifier
  130. Cheap Chinese amps
  131. Wanted: Leak ST-50 Mains transformer 240V
  132. Eico HF-20 to bass guitar amp
  133. Ampeg B-18 issue/debug
  134. Who makes their own OPT around here?
  135. 71A
  136. Sound quality chinese tube amplifiers
  137. freeware circuit simulator for Osx (Mac)
  138. 12ax7LP substitute
  139. RH84 SE Build and custom Edcor power transformer
  140. 6l6 se primary impedance choice
  141. Luxman SQ38FD mkII, schematic
  142. 6c33 SET (my next project). Need some feedback
  143. Amorphous iron UMCCC-125: what would you do from it?
  144. Old Fisher SA-300 Amp help!
  145. What kind of sound does a noisy 12B4 make ??
  146. KT88 bias current keeps drifting
  147. Oddball Tube - Useful for Audio??
  148. 12AX7 dual triode "Signal Enhancer/Conditioner"
  149. 2nos of 6l6 in Parallel SE mode
  150. Output transformer selection
  151. 5C8S rectifier psud2 modle/rectifier information
  152. EF80 / KT77 SIngle Ended
  153. Longevity of output tubes in triode vs pentode
  154. Fender champ circuit low output.
  155. ekco ui59 receiver
  156. simple heater question .....
  157. Different Differential Pairs
  158. Decware Zen SET (first project/90% finished)
  159. YL-1200 for audioamp
  160. 7984's
  161. Building First Preamp HELP
  162. Aikido All-In-One Octal B+ measurement.
  163. OPT PP for GU50 Triode ?
  164. Requesting input on preamp schematic
  165. Longer life 6CA7's for class A
  166. Organ split
  167. Two amps done and done!
  168. Testing the 5842/417a on Sencore MU150?
  169. Why Class A Guitar Amplifiers Sound So Good ........
  170. Tube ID
  171. How to best drive an 845?
  172. K-16ls + ton pcb (just finished pics)
  173. Helios + Pultec tube EQ rack prototype.
  174. 12ax7 preamplifier with modified power supply!!! please help!
  175. tube amp prototype with pc
  176. Looking for a new diy project
  177. To James or to Baxandall?
  178. 45 triode : max 275 or 300 vdc ?
  179. Anyone with experience breaking in capacitors out of circuit?
  180. Vt-64/800 tube amp/preamp
  181. Hammond 1609 Output Transformer - EL84
  182. Chinese Capacitors
  183. 60 Watts A Channel 6528A Tube Amp
  184. AC or DC heathing?
  185. 1000W tube amplifier
  186. LEDs or RC?
  187. Is this amp worth bringing back to life?
  188. Melody PM845
  189. Need help troubleshooting this integrated.
  190. Wanted...design for D3a triode strapped driving 45
  191. Removing Tone Controls from VoM Preamp/Amp
  192. Philips 8580 useful anywhere?
  193. output transformer info
  194. 100Hz square preamp responce help
  195. 6P21s 6n21c tube, True Direct Heater?
  196. Convert Dogzilla for Hi-Fi output
  197. Bogen AP-35 Static and Pop from one channel
  198. EL34 PP triode mode hums
  199. Rectifiers
  200. Yaqin MC 10l problem
  201. Stripping Edcor's powder coating
  202. 5Y3 with slow warm up input and output tubes
  203. power transformer question
  204. DHT heaters . and their property"s
  205. Power Tube Cathode Resistor "distance"
  206. Does the same output power from tube amp and ss amp have difference?
  207. 32 Channel Microphone Preamp
  208. Field coil questions
  209. MC240 found in a shed.
  210. "Impossible" circuit which seems to amplify anyway.
  211. EL84 driving EL84 SEP
  212. Tube buffer for MosFet Citation 12
  213. Building a better power Triode
  214. Original KT88? or not
  215. Moscode 300 Upgrade
  216. Onwer's Manual for Realistic SAF-24D
  217. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  218. 6J4 Experiment!
  219. Anyone build Broskie's T8 OTL?
  220. Just WHY are DHT tubes SO Expensive....?
  221. Two chassis grounding
  222. Tubes vs. Caps?
  223. Impedance and output transformer selection question
  224. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  225. peavey tube amplifiers
  226. Stark 9-66 tester repair
  227. 5e7 bandmaster build q's
  228. What kind of tube did I use back then?
  229. Wanted: Vacuum Tube Phono Preamp for PAS
  230. Lower gain in YS Audio linestage
  231. Converting 12FQ8 for 12AX7 , HELP !!!
  232. Transformer Inquiry
  233. Gibson BR-9 Tube Amp Issues
  234. Stromberg-Carlson AU-35 PA Amp for Guitar
  235. Pitfalls of paralleling different resistor brands?
  236. Question about rp and the AC load line
  237. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  238. What is it about SET's?
  239. Help with Power cable on guitar amp
  240. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  241. A small help with russian low voltage tube
  242. EL34 vs 6L6 for HiFi
  243. Acoustic (not Audio) Alchemy Labs
  244. Mullard 404? ECL82 amp
  245. OP & tube power transormers
  246. EML 300B-XLS Schematic?
  247. Experiences with TAD EL34?
  248. C3g simulation model
  249. ok maybe im just a newb when it comes to amps but...
  250. Yet another compactron to play with...

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