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  1. Big tubes thread
  2. Meng Yayi KT88 MonoBlock
  3. Old Dumont Console - Story and Questions
  4. Newbie GlassWare Aikido All in One Questios
  5. Building my 1st tube amp
  6. A good tube for my SE 5K-8 OPT's
  7. 6c33 - ready, SET, GO
  8. Noisy tube rectifier goes quiet when i put my hand NEAR it
  9. Strange ancient looking tube amp
  10. Vintage Dynaco vs. Triode Electronics
  11. LINE PRE - 6N9S - 6dB
  12. Can I balance a diff stage like this?
  13. Ways to design for low IM distortion
  14. Genalex KT88 Plate Dissipation Question
  15. difference between SE and PP transformer
  16. I put a bad ouput tube in my amp, did I hurt it?
  17. Stereo amplifyer project
  18. 6sl7 6sl7 dynaco driver board
  19. PCB for stand alone 5W SE
  20. Triode VS. UL bias
  21. How to test a DIY amp?
  22. Morgan Jones 4th ed
  23. How close is too close when designing an amp
  24. Fatman I tube Problem
  25. 807 p-p tube amp schematic
  26. Listen to 6DJ8 Triode through Power Chip IC. Easy project.
  27. James O/P Tx
  28. Ripple reduction with added voltage compensation to HV
  29. SEVETLANA "SV" 6550 C vs 6550 C
  30. Frank's 6SN7 - plate follower, noise
  31. Help running RH807 at higher voltage
  32. Preamp hum issues
  33. EML mesh plate 2a3 in DRD amp
  34. How to run RH807 at 400V?
  35. Preamp Umbilical - Use Shield as Ground Lead?
  36. Automatic Bias Control sliding bias
  37. Edcor Output Transformer Resistance
  38. Would this be worthwile restoring?
  39. Historic Tube Amplifiers
  40. 6HF5 testing
  41. A quick question about NFB
  42. PAS3 - are the tone controls really *that* bad?
  43. PP OPT in SE mode operation?
  44. Cheap 6n6p double ended push-pull idea - thoughts?
  45. Vintage WE Tubes
  46. SE amplifier advice..
  47. Mineature Tubes
  48. MD SM 102b transformer spec's please
  49. Vintage Marconi radio
  50. second order harmonics
  51. Hybrid amplifier
  52. Input caps for Motorola Console Amps
  53. to much gain
  54. Question - Type 19 tube
  55. alternative for footswitch??
  56. Noob. Help PP EL34 / EF86 both as triode schem.
  57. RH84 SE, pentode driver... advice please
  58. Having an issue with a MOSFET in my Blue Hawaii
  59. Info wanted on OPT....
  60. 6P43P Strange Plate Graphs
  61. Multiple Phono preamp
  62. pas filament supply
  63. HV on high voltage amps
  64. Lageschaar hybrid-connection PSE-KT66
  65. First DIY from scratch
  66. Ballance resistors
  67. casing about SOHA I headphone amp
  68. Any interest in 56 various tubes?
  69. Help with exploding tubes!
  70. My new filiment PS for Push Pull GM70
  71. So what exactly do I have here? Heathcraft EA-2
  72. first experience with retro electronics
  73. Revising a tube pre-amp: can't find parts?
  74. Info for Pioneer SA-810 tube amp
  75. Has anyone tried tx2575 in cathode resistor?
  76. 12JZ8
  77. Is it OK to drill mounting holes in transformer laminations?
  78. Seeking Sescom Transformer Specs
  79. Calibrating a Sencor ??
  80. Capacitor in parallel with negative feedback resistor
  81. Old electronics repair store closing. Hartford. FYI. Not related
  82. CL ad for tubes in MA. FYI only. Not connected
  83. Distortion in amp after warm up
  84. Re-bias when changing from Triod to Pentode
  85. Yaqin MC-10L - Electricity in volume knob
  86. Newbie question about a 300B amplifier
  87. Modified Wavebourn Tower II ?
  88. Elevated Heater Voltages - 40v?
  89. Free Tubes!
  90. found tube i like, only small bits of red letter,what tube brands used red lettering?
  91. Impedance problem Of O/P Transformer
  92. Runaway tubes or tubes drawing excess current--baffling
  93. croft SD3 CROFT PREAMP
  94. valve phono stage on a budget
  95. Dynaco vs. Dynaclone
  96. Amplifier Problem - Need help!
  97. Idea for a 6n1p preamp
  98. K & K Audio Two Terminal Constant Current Source
  99. Counterpoint SA-12 wackyness
  100. Shuguang SG-50
  101. manley EQP-1A Tube EQ
  102. El34 PP advice needed
  103. Fosgate Punch 800 a4, diagram needed
  104. Power Transfomer For Valve Amp Question
  105. a 'simpler' tube/valve mixer topology
  106. Qustions about centre speaker connection
  107. Using Seperate Preamp to Drive S-5 Electronics K-16LS Integrated Amp?
  108. 0d3 for el84 screen regulator
  109. Edcor XPWR059 power problem
  110. Did bootstrapping pot change it's operation
  111. Transformer wiring (Need Help)
  112. Class-d Hybrid
  113. New test data comparing different 7591's
  114. ZKIT2 Zen Triode mono SET amplifier kit
  115. Tango 11146 Output Transformers ?
  116. KT120 Tube
  117. B&K Dyna-Quik 500 test socket 9A shows good tubes as Bad
  118. Mu follower
  119. Aronov LS9100 - any info ???
  120. Tube Preamp Dock
  121. Grounded grid Zout
  122. HY69 in triode mode...some experience ?
  123. ITA LA 1B SCHEMATICS????
  124. Bleeder Resistor (Need Help)
  125. use of 12ax7 and 6v6 as 6T9 alternative?
  126. Positive feedback for amplifier input stage
  127. Rusted OT Issue?
  128. Multiple filament windings
  129. need help with frist tube amp
  130. Testing Western Electric 437a with TV-7D/U ?
  131. Graaf 5050
  132. finished breadboard project
  133. How Much is Too Much Filtering?
  134. 2a3 - for car use?
  135. troubleshooting a Mingda MC34AB
  136. How to repair and refurbish vintage tube amps?
  137. How to repair and refurbish vintage tube amps?
  138. NYAL OTL3 Amps
  139. 6DJ8/6922 rolling... any general consensus on these?
  140. Mullard 12AU7 tests bad when running grid leakage test?
  141. Can you identify this AMP??
  142. effects of different HT voltage
  143. Substituting a 12AX7 for a 12DW7
  144. what to do with 1uF???
  145. Correct power rating for Chicago OT - opinions
  146. Need help with Stancor 1.5 K OPT Tran.
  147. S5 K8-LM mono KIT (total newbie)
  148. Pentode section of 6M11
  149. Looking for goodme proven 2A3 SE project
  150. Music Angel MENG Series EL34 Push Pull Tube Integrated Amp
  151. Tube replacement causes bias problems.
  152. Spectra of tube glow: any data?
  153. Plate Characteristics for 6158 dual triode
  154. Center tap or not...
  155. Connecting G3 to a negative supply on a pentode
  156. Dynaco FM-3 Curcuit Boards
  157. Sonic Frontiers Line 2 schematic
  158. Philips Hi Z radio amp
  159. Need help modifying tube bias circuit
  160. filament transformer current rating
  161. SE OT power tube suggestions please!
  162. What is up with this wave form?
  163. Volume Controls
  164. Help identifying driver stage
  165. Uses for Cheapo 6CB5
  166. Twin DN2540 in TubelabSE?
  167. Bias or loss of power in one channel problem
  168. Drilling a hole in a Tube :)
  169. Tube stage placement in a mongrel (hybrid) amp
  170. Quad KT88 driver
  171. Single Ended Output Transformer
  172. 300B with interstage
  173. Problem with Aria (Meng) Mini 6p1 (glowing plate)
  174. possible to filter dips in AC line?
  175. Weston Ammeter Headphone Amp Prototype
  176. What is the fault with this amp?
  177. k-12G turret board version
  178. low voltage "high gain" amp
  179. Connect ipod/laptop to old 1950's radio
  180. (Weston Ammeter Headphone Amp Redux ?)
  181. Would it be possible to drive a 300b with new power jfets?
  182. Would it be possible to drive a 300b with new power jfets?
  183. Will KT88 increase output power in Copland CTA-402
  184. Music Angel XD-SE EL34 intermittent thump
  185. OPT with cathode feedback
  186. Rebuilding fisher sa-1000
  187. Little Dot Mk IV SE
  188. Choke power supplies and bypassing.
  189. Load resistor on OPT
  190. Ultimate Octal
  191. Help needed for 6H30 output schematic for DAC
  192. KT88 doubt
  193. Leave it on or turn it off?
  194. Did I do this loadline correctly
  195. Masco MA-35 rebuild
  196. Motorola SE console amp blown fuse
  197. What to do with Telefunken parts?
  198. OT as buffer?
  199. Single ended EL84 Schematic
  200. Pattern for power xmfr magnetic leaking ?
  201. heater voltage
  202. Small Speakers for 5 channel single ended amp
  203. missing circuit components- why?
  204. What to do with a 6N14P/ECC84
  205. Info for very rare neon tubes?
  206. UL for EL84. 22-24% is better than the dogma....40% is lowest distortion....
  207. Jan Tube question
  208. 60 watt tubeamp with Low B+
  209. What types of SET rock the hardest?
  210. UTC A16 interstage 300B
  211. 6C33
  212. Need wiring schematic for Conn 6050 amp
  213. 6N6P at very low voltage
  214. Transformer Swap
  215. Need help building a tube linestage for my gainclone
  216. Ping SY: His Master's Noise
  217. Wollensak SE 7591 parts projects?
  218. 807 screen voltage help
  219. My little 801A power amplifier
  220. Help needed finding a small DPST switch - confused!
  221. Help with bias pot- wont adjust!
  222. 6N6P / ECC99 / E182CC
  223. bias question
  224. Really low parts could el84 pp design for a beginner?
  225. moviola tubes -- other names?
  226. DHT with TDA1541A in a NOS DAC?
  227. VT100mk2 - Retubing
  228. Parallel 6L6 se iron suggestion.
  229. 6N2 Tube Srpp Drive Stage
  230. Unexpectedly good EL84 amp
  231. Kypo Electronic - Buffer, Preamp & Amp kits
  232. PSU bypass cap type
  233. Yaqin MC10-T
  234. Yaqin MC10-L Need help collating data
  235. Wanted: High Quality Complete tube NOS DAC with TDA1541A
  236. 6360 or 6939 as a phase inverter
  237. Peerless 16687 & 7142 Transformer Identification
  238. Wanted: High Quality DIY Tube NOS DAC with TDA1541A
  239. Restoration of leak stereo 20: advice pls
  240. DC Tube Heaters
  241. Musical Paradise MP-428 300B Amplifier
  242. Tube regulator
  243. Why overvoltage on HT?
  244. 50c5 schematic question
  245. Me again... matrix decoding w/ tubes?
  246. chapman 305 transformer wiring
  247. tube rolling el34 need advice
  248. Adding resistance to OT circuit.
  249. Tube pre-amp + Class-D amp. any experience?
  250. Bias using a ccs as an anode load

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