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  1. JTM30 output transformer
  2. Music Angel Meng 6P1
  3. Is it possible to dampen a partially microphonic 12ax7?
  4. Pioneer SA-810 tube amp.
  5. 6C33 D.C.M.B. - Paging Ari Polisois
  6. Whose is this logo?
  7. What is grid resistance of 807/6l6 in pentode
  8. PAS Upgrade Boards by Epperson
  9. Bang and Olufsen 609k stereo se el84 fm tuner
  10. Finished EL34 tube amp... but oscilates weird..
  11. Scope Trace
  12. Drifty tubes
  13. Choosing plate voltage
  14. Determining Zout for SRPP
  15. PX25 amplifier - thoughts?
  16. Testing Ck5703 tubes
  17. When can screen voltage be higher than plate???
  18. 31AL10's
  19. Lafayette TE-50 Tube Tester
  20. Acoustic (not Audio) Alchemy - I need a wizzard
  21. current feedback
  22. dac with tube buffer/preamp
  23. Sowter 3607
  24. Back to Loftin-White
  25. What to build? (I have a lot of parts)
  26. Grounding chassis through RCA
  27. K40Y-9: Questions And Comments
  28. buffer line stage schematic
  29. Dual triode Thanks for the pre-attenuation link
  30. Help With Alps Volume Pot Noise
  31. 6AM4 driving 45???
  32. Franks 6sn7 line stage question
  33. Edcor power tx XPWR035 issue
  34. Recommend me a schematic for El34 or KT88 ?
  35. RH84 Power supply
  36. Pentode driving a SE triode? any experience?
  37. Big tubes thread
  38. Meng Yayi KT88 MonoBlock
  39. Old Dumont Console - Story and Questions
  40. Newbie GlassWare Aikido All in One Questios
  41. Building my 1st tube amp
  42. A good tube for my SE 5K-8 OPT's
  43. 6c33 - ready, SET, GO
  44. Noisy tube rectifier goes quiet when i put my hand NEAR it
  45. Tweed 5E3 Deluxe Project Problems
  46. Strange ancient looking tube amp
  47. Vintage Dynaco vs. Triode Electronics
  48. LINE PRE - 6N9S - 6dB
  49. Can I balance a diff stage like this?
  50. Ways to design for low IM distortion
  51. Genalex KT88 Plate Dissipation Question
  52. difference between SE and PP transformer
  53. I put a bad ouput tube in my amp, did I hurt it?
  54. Vox AV 100 Mk2
  55. Stereo amplifyer project
  56. 6sl7 6sl7 dynaco driver board
  57. PCB for stand alone 5W SE
  58. Triode VS. UL bias
  59. How to test a DIY amp?
  60. Morgan Jones 4th ed
  61. How close is too close when designing an amp
  62. Fatman I tube Problem
  63. 807 p-p tube amp schematic
  64. TUBELAB SIMPLE SE
  65. Listen to 6DJ8 Triode through Power Chip IC. Easy project.
  66. Cheap motor caps(MKP) vs Electrolitics
  67. James O/P Tx
  68. Ripple reduction with added voltage compensation to HV
  69. SEVETLANA "SV" 6550 C vs 6550 C
  70. Frank's 6SN7 - plate follower, noise
  71. Help running RH807 at higher voltage
  72. Preamp hum issues
  73. EML mesh plate 2a3 in DRD amp
  74. How to run RH807 at 400V?
  75. Preamp Umbilical - Use Shield as Ground Lead?
  76. Automatic Bias Control sliding bias
  77. Edcor Output Transformer Resistance
  78. Would this be worthwile restoring?
  79. Historic Tube Amplifiers
  80. 6HF5 testing
  81. A quick question about NFB
  82. PAS3 - are the tone controls really *that* bad?
  83. PP OPT in SE mode operation?
  84. Cheap 6n6p double ended push-pull idea - thoughts?
  85. Vintage WE Tubes
  86. SE amplifier advice..
  87. Mineature Tubes
  88. MD SM 102b transformer spec's please
  89. Vintage Marconi radio
  90. second order harmonics
  91. Hybrid amplifier
  92. Input caps for Motorola Console Amps
  93. to much gain
  94. Question - Type 19 tube
  95. alternative for footswitch??
  96. Noob. Help PP EL34 / EF86 both as triode schem.
  97. Yet another LA-2A
  98. RH84 SE, pentode driver... advice please
  99. Having an issue with a MOSFET in my Blue Hawaii
  100. Info wanted on OPT....
  101. 6P43P Strange Plate Graphs
  102. Multiple Phono preamp
  103. pas filament supply
  104. HV on high voltage amps
  105. Lageschaar hybrid-connection PSE-KT66
  106. First DIY from scratch
  107. Ballance resistors
  108. casing about SOHA I headphone amp
  109. Any interest in 56 various tubes?
  110. Help with exploding tubes!
  111. My new filiment PS for Push Pull GM70
  112. So what exactly do I have here? Heathcraft EA-2
  113. Please help identify this Amveco toroidal transformer.
  114. first experience with retro electronics
  115. Revising a tube pre-amp: can't find parts?
  116. Info for Pioneer SA-810 tube amp
  117. Has anyone tried tx2575 in cathode resistor?
  118. 12JZ8
  119. Is it OK to drill mounting holes in transformer laminations?
  120. Seeking Sescom Transformer Specs
  121. Calibrating a Sencor ??
  122. Capacitor in parallel with negative feedback resistor
  123. Old electronics repair store closing. Hartford. FYI. Not related
  124. CL ad for tubes in MA. FYI only. Not connected
  125. Distortion in amp after warm up
  126. Re-bias when changing from Triod to Pentode
  127. Yaqin MC-10L - Electricity in volume knob
  128. Newbie question about a 300B amplifier
  129. Modified Wavebourn Tower II ?
  130. Elevated Heater Voltages - 40v?
  131. Free Tubes!
  132. found tube i like, only small bits of red letter,what tube brands used red lettering?
  133. Impedance problem Of O/P Transformer
  134. Runaway tubes or tubes drawing excess current--baffling
  135. croft SD3 CROFT PREAMP
  136. valve phono stage on a budget
  137. Dynaco vs. Dynaclone
  138. Amplifier Problem - Need help!
  139. Idea for a 6n1p preamp
  140. K & K Audio Two Terminal Constant Current Source
  141. 6550 Push Pull noise in power stage
  142. 6P1P-EV PP guitar amp tryout.
  143. question about output transformer for guitar amp
  144. Hammond B3 tech help needed. Distortion only on certain notes/drawbar frequencies.
  145. Counterpoint SA-12 wackyness
  146. Shuguang SG-50
  147. manley EQP-1A Tube EQ
  148. El34 PP advice needed
  149. Fosgate Punch 800 a4, diagram needed
  150. Power Transfomer For Valve Amp Question
  151. a 'simpler' tube/valve mixer topology
  152. Qustions about centre speaker connection
  153. Using Seperate Preamp to Drive S-5 Electronics K-16LS Integrated Amp?
  154. 0d3 for el84 screen regulator
  155. Edcor XPWR059 power problem
  156. Did bootstrapping pot change it's operation
  157. Transformer wiring (Need Help)
  158. Class-d Hybrid
  159. New test data comparing different 7591's
  160. Eico 666 Tube Tester Freaks Out When Testing Rectifier Tubes
  161. ZKIT2 Zen Triode mono SET amplifier kit
  162. Tango 11146 Output Transformers ?
  163. KT120 Tube
  164. B&K Dyna-Quik 500 test socket 9A shows good tubes as Bad
  165. Mu follower
  166. Aronov LS9100 - any info ???
  167. Tube Preamp Dock
  168. Substituting potentiometers
  169. Grounded grid Zout
  170. HY69 in triode mode...some experience ?
  171. ITA LA 1B SCHEMATICS????
  172. Thoughts on PSU
  173. Bleeder Resistor (Need Help)
  174. use of 12ax7 and 6v6 as 6T9 alternative?
  175. Do I want fast settling or massive filtration in PS?
  176. Positive feedback for amplifier input stage
  177. Rusted OT Issue?
  178. Multiple filament windings
  179. need help with frist tube amp
  180. Testing Western Electric 437a with TV-7D/U ?
  181. Graaf 5050
  182. finished breadboard project
  183. How Much is Too Much Filtering?
  184. 2a3 - for car use?
  185. troubleshooting a Mingda MC34AB
  186. How to repair and refurbish vintage tube amps?
  187. How to repair and refurbish vintage tube amps?
  188. NYAL OTL3 Amps
  189. 6DJ8/6922 rolling... any general consensus on these?
  190. Mullard 12AU7 tests bad when running grid leakage test?
  191. Can you identify this AMP??
  192. effects of different HT voltage
  193. Substituting a 12AX7 for a 12DW7
  194. what to do with 1uF???
  195. Correct power rating for Chicago OT - opinions
  196. Need help with Stancor 1.5 K OPT Tran.
  197. S5 K8-LM mono KIT (total newbie)
  198. Pentode section of 6M11
  199. Looking for goodme proven 2A3 SE project
  200. Music Angel MENG Series EL34 Push Pull Tube Integrated Amp
  201. Tube replacement causes bias problems.
  202. Spectra of tube glow: any data?
  203. Plate Characteristics for 6158 dual triode
  204. Center tap or not...
  205. Connecting G3 to a negative supply on a pentode
  206. Dynaco FM-3 Curcuit Boards
  207. Sonic Frontiers Line 2 schematic
  208. Philips Hi Z radio amp
  209. Need help modifying tube bias circuit
  210. filament transformer current rating
  211. SE OT power tube suggestions please!
  212. What is up with this wave form?
  213. Volume Controls
  214. Help identifying driver stage
  215. Tube mixing console
  216. Uses for Cheapo 6CB5
  217. Twin DN2540 in TubelabSE?
  218. Bias or loss of power in one channel problem
  219. Drilling a hole in a Tube :)
  220. Tube stage placement in a mongrel (hybrid) amp
  221. Tubelab Single Ended
  222. Quad KT88 driver
  223. Single Ended Output Transformer
  224. SE P-P guitar amp.
  225. 300B with interstage
  226. Problem with Aria (Meng) Mini 6p1 (glowing plate)
  227. possible to filter dips in AC line?
  228. Weston Ammeter Headphone Amp Prototype
  229. What is the fault with this amp?
  230. k-12G turret board version
  231. low voltage "high gain" amp
  232. Wanted: ELNA Cerafine 10000uf 63v New or used
  233. Connect ipod/laptop to old 1950's radio
  234. Percieved Power outputs Tube vs Solid State
  235. (Weston Ammeter Headphone Amp Redux ?)
  236. Tube guitar amp for acoustic guitar?
  237. Would it be possible to drive a 300b with new power jfets?
  238. Would it be possible to drive a 300b with new power jfets?
  239. Will KT88 increase output power in Copland CTA-402
  240. Music Angel XD-SE EL34 intermittent thump
  241. OPT with cathode feedback
  242. Rebuilding fisher sa-1000
  243. Little Dot Mk IV SE
  244. EF86 on HICKOK 752a tester..??
  245. Choke power supplies and bypassing.
  246. Load resistor on OPT
  247. Ultimate Octal
  248. Help needed for 6H30 output schematic for DAC
  249. KT88 doubt
  250. Leave it on or turn it off?

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