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  1. 50 set amp
  2. Valuable Valves
  3. Allowable screen voltages in triode-connected pentodes
  4. grounding cable
  5. SS Driver and splitter stages used for PP tube output???
  6. Resistance coupled cascaded amplifier
  7. 6SL7 alternatives?
  8. Dynaco st70 vs Heathkit W5M
  9. Ceasar II - HighEnd Tube Mono Block Project
  10. Cool amp
  11. output tube blocking distortion problem
  12. HP 8903 software posted
  13. Rectifier for 900v DC
  14. How good are these?
  15. Brimar 6V6G different operating parameters to later GT?
  16. RCA RK290 console question
  17. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  18. Simple 6V6 Push Pull Schematic
  19. remote help for RCA RK-290 console
  20. Suggestion for a 2x15 or 2x20 amp?
  21. Spud, Schade, PP, Anti-triode ECL86
  22. Posted new P-P power amp design
  23. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  24. Vintage RCA amps
  25. 6.3V/5A DC Fillament Schematic
  26. Can I use this output transformers with a 5965?
  27. Measuring Tube Gm
  28. Can I use this output transformers with a 5695?
  29. How to design a direct coupled SE amplifier?
  30. Ordered TechTube Valves today
  31. Should I buy and part out an old Hammond tube organ?
  32. 6N6P Unbalanced Sound?
  33. DC filaments for 6550s
  34. Obliterate, delete Vibrato or Reverb circuit in blackface-like amps
  35. My Copland CTA401 hums , help needed please
  36. Triode connected Pentodes in a cathode bias?
  37. Transformer as a voltage gain element
  38. Russian 6p31s tubes
  39. Ixcp 10m45s
  40. rectifier limiting resistors capacitor input
  41. arc V70 blue flash in KT90 tubes
  42. Choke?
  43. EL34 PP motorboating questions
  44. GU29 damaged
  45. PSUD2 questions
  46. Help lundahl-300bxls problem
  47. Srrp output question
  48. je lab 300b
  49. SET amp using Triode-FET complementary feedback pair ?
  50. Monarch STA-100X Refurb
  51. What causes high THD in tube amps ?
  52. Cons / Pros
  53. Preamp 6v6 grid leak resistor value?
  54. Quick question about preamps
  55. Why are mesh plates supposed to be superior?
  56. 60's and 70's GE tubes
  57. What valves are pin compatible with ECC88 / 6DJ8?
  58. Eico HF-81 OPT specs
  59. Fender Super Twin P Xformer
  60. Audio Research V70 mains transformer rewiring for 220 volts.
  61. looking for fairly simple project for Eico 81 OPT's
  62. looking for fairly simple project for Eico 81 OPT's
  63. New Hybrid Driver/Amplifier
  64. OT: vacuum diode AM detector schematics ?
  65. Sad News about George Wright
  66. Finest Chinese Tube Preamp?
  67. 12B4 Line Stage + Phono Option
  68. Crinkly tube getter – Is this bad?
  69. ??? Output Transformer - Silicon Steel or Amorphous
  70. Is it time for another CCS Group Buy?
  71. Am I Going to Kill This Amp?
  72. My version of the Simple EL84 or rise of the anti-triode.
  73. Intercomponent ground loop hum
  74. Connecting the heater to the cathode in rectifier tube
  75. Dented ASC Caps
  76. EF86 replacement
  77. Super Simple Valve Pre-amp Suggestions?
  78. 6V6 P-P Amp From RCA Manual RC-19
  79. phono stage woes...
  80. stereo SE kt88 build ... abdellah diyaudioprojects design
  81. Mounting filament transformers under chassis?
  82. More impedances for Hammond 125E
  83. Troubleshooting Push-Pull 2A3 (please help)
  84. Lost a channel in my TSE
  85. 6sl7 srpp kt66 se
  86. asking about 6sn7 and 2a3 tubes
  87. help w/ Eico hf-81
  88. Hammond PT power ratings
  89. JVC/Delmonico console info
  90. my TubeLab Amps
  91. Issues with grid choke
  92. Sharp reg. for tubelab se
  93. Calibration of Mercury 1000 tube test set
  94. 6v6 music machine build help!
  95. PCF801 Suggestions
  96. el84 200V Vg2 curves
  97. Prototype fender bassman for trade - echosonic or standel 25l15
  98. What's the advantage of E-linear
  99. Tube microphonics (article)
  100. Another Counterpoint SA-7.1 question
  101. How to test a subminiature tube
  102. C3M linestage
  103. Needinfo: Tamradio SOT-850 specs
  104. Back to Back transformers
  105. UltraLinear Screen Drive
  106. UTC CG-52AX - use as plate chokes?
  107. Chassis material
  108. Fu29 & e813cc
  109. Converting Bogen chb-35a to more guitar friendly amp (newbie inside)
  110. Tube rollers - what tubes for my RH84?
  111. What is meant when tubes are sold as "matched"?
  112. 1:1 transformer replace with line filter
  113. Old valve radios have any use?
  114. Know of any big 7 pin FW rectifier tubes?
  115. Decca Decola PX25 amp schematic
  116. Happy birthday....to me!
  117. Just tested the new E183CC
  118. Chassis mounting tubes off my PCB
  119. Tubelab SE with 2A3 Hum
  120. I need some help with the OPTs on a set of old 6V6GT monoblocks
  121. modified Headwise WCF headpone design
  122. 6em7 ,difference from brand ?
  123. Wavebourn Tower thread
  124. Sealed Lead Acid Batteries
  125. New ebay record!
  126. New ebay record!
  127. NFB, how to implement here?
  128. Recommended Mouser Electronics
  129. Utter novice looking for answers to easy questions:
  130. Hum Troubleshooting on My Tubelab SE with 2A3
  131. Trying to understand Power Supplies - The first Cap in a CRCRC
  132. 5687=e182cc???
  133. Series wire Antek Secondaries
  134. 300bxls vs mosfet :)
  135. 6N4P info
  136. Its alive!!! Aikido 5687
  137. Looking for advice,EL84 based Mono amp conversion/ restoration
  138. Looking for ideas
  139. Looking for curves for obscure tube
  140. tube life, soft start, cathode bias
  141. Triad N-68X Tranny for ^SN7 Aikido?
  142. RH84 with simple 5687 front end?
  143. Rickenbacker old amplifiers (b16 series)
  144. Aikido grounding scheme
  145. measuring voltages and currents simple se
  146. Beginner's luck -- Tubelab Simple SE on first try!
  147. 6CH6 find
  148. Shielded cables - success
  149. Heater-Cathode Voltage
  150. Battery powered tube preamps/effects (guitar)
  151. deliberately unmatching output tubes
  152. triode heater ground question
  153. 6sn7 alternative
  154. A tube amp that will drive 2 ohms or less...
  155. Looking for a simple circuit
  156. Why does my tube amp make a scratchy, popping sound?
  157. Fisher kx-100 Recitfire problem
  158. Potentiometers - USA
  159. Tube SE amplifier with 6P3S (russian tube)
  160. Plate dissipation
  161. Need help with tube models in LTSpice
  162. D3a pentode as driver? History of this tube?
  163. Tubelab SSE inrush current limiters.
  164. looking for some ideas. rebuilding heathkit w-3m amps.
  165. What's wrong with the 12AV7? Try this out!
  166. simple se and edcor gxse output transf question
  167. old tubes
  168. weird ef86 input stage in a Philips amp
  169. table radio w/ tube amp...in the designing process...anyone do this?
  170. Question: grid current related
  171. RH84 based amp
  172. My Aikido!!
  173. Tubelab Simple SE - Transformer Assistance
  174. ST70 clones
  175. Need help selecting a VR tube
  176. Help analysing Hammond organ circuit
  177. Stromberg-Carlson ASR-433
  178. WAHAHA! Our DIY tube amp is done£¡£¡
  179. Pentodes.
  180. making octal adapters
  181. How to cut ceramic
  182. Tubelab web site down for a day
  183. Trans wires in parallel or series?
  184. Tube socket for ECC88, drawing
  185. Richardson 5ar4
  186. Percy Audio / Still open? / Can't seem to get any response from them
  187. Resistor types in an amplifier
  188. simple se inrush limiter placement
  189. CRC Filter ?
  190. EICO 666 tube tester - What settings do you use?
  191. PCB edge connectors... what will they do to my sound?
  192. Tranny question
  193. Anyone here in contact with Pieter from Tribute?
  194. Fisher 500C with JJ 7591S - Optimum Bias Current?
  195. Power supply resistors power ratings
  196. Anyone tried this SE trafos?
  197. Adjustable B+ and Cathode Current linestage
  198. Possibility of Tube substitution trough MOSFETs
  199. G2 overvoltage ??
  200. Toroid transformer cover?
  201. Help me to think of name for a tube amplifier
  202. All DHT Phono Stage
  203. How Set up Aria Mini 6P14?
  204. new build - abdellah SE KT88
  205. Sources for enclosures, parts, standoffs, tubing, etc?
  206. Duncan PSUII question
  207. Bench Phono Pre Layout
  208. Imd
  209. Line Level tube
  210. Wanting to start a DIY tube amp
  211. ARC VT100 driver adjustment
  212. Valve Amplifier
  213. SE OPT's in India
  214. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  215. What is a "gridless control" tube ?
  216. simple se ground to speaker wire?
  217. Polytone Mini-brute II
  218. New 6N6P linestage
  219. Split supply, arrangement of gain and phase splitter tubes
  220. New Hybrid Amp with multiple inputs: Little Singer H-30A
  221. Help with my Transformer - vibrating
  222. Ultralinear fender?
  223. Quick transformer question
  224. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  225. Oddwatt / Oddblock Builder's Thread
  226. Tube output stage for Buffalo Saber 32-bit DAC?
  227. Silvertone Multiplex Stereo Model No. 4092 Questions
  228. 6SJ7(6J8) + 6v6 (6P6S) SE
  229. Wavebourn Tower-III High-end hybrid amp
  230. Question - Closest Russian Analog of 12BH7A
  231. Help understanding the PowerDrive circuit anaylsis
  232. Aikido pre
  233. Fixed bias: Pots near supply or tubes?
  234. Oh, those 12AU7s again...
  235. Plitron LOW Power OPT...
  236. Has anyone used The Guiguang 300B?
  237. anyone have any el86 circuits laying around?
  238. ok, power supply question, 230v - 117v conversion
  239. Big lot of tubes purchased this morning
  240. Tamura HM-1
  241. Tube Amp Design Question...
  242. Cathode Bias questions
  243. Tube Hybrid Shunt Regulator ... will this even work?
  244. Forgive me TubeLab ... I have sinned
  245. Broskie regulator oscillates
  246. Yushang-Audio Classic 16.6
  247. Tube PreAmplifier Kit suggestions..
  248. Sourcing Chassis Access Panels
  249. Running 4 ohm speakers with my Simple SE
  250. YAQIN SD-32A Tube CD/HDCD Player

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