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  1. Help me choose between two designs
  2. Miller Capacitance AGAIN!
  3. Channel switching / Relay / board
  4. Tossie's valve world site
  5. What is the purpose of resistive load at line output trans?
  6. 8608 pentode
  7. #26 pre amp
  8. my third RH84
  9. Miller Capacitance of triode strapped pentode
  10. 50 set amp
  11. Valuable Valves
  12. Allowable screen voltages in triode-connected pentodes
  13. grounding cable
  14. SS Driver and splitter stages used for PP tube output???
  15. Resistance coupled cascaded amplifier
  16. 6SL7 alternatives?
  17. Dynaco st70 vs Heathkit W5M
  18. Ceasar II - HighEnd Tube Mono Block Project
  19. Cool amp
  20. output tube blocking distortion problem
  21. HP 8903 software posted
  22. Rectifier for 900v DC
  23. How good are these?
  24. Brimar 6V6G different operating parameters to later GT?
  25. RCA RK290 console question
  26. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  27. Simple 6V6 Push Pull Schematic
  28. remote help for RCA RK-290 console
  29. Suggestion for a 2x15 or 2x20 amp?
  30. Spud, Schade, PP, Anti-triode ECL86
  31. Posted new P-P power amp design
  32. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  33. Vintage RCA amps
  34. 6.3V/5A DC Fillament Schematic
  35. Can I use this output transformers with a 5965?
  36. Measuring Tube Gm
  37. Can I use this output transformers with a 5695?
  38. How to design a direct coupled SE amplifier?
  39. Ordered TechTube Valves today
  40. Should I buy and part out an old Hammond tube organ?
  41. 6N6P Unbalanced Sound?
  42. DC filaments for 6550s
  43. Obliterate, delete Vibrato or Reverb circuit in blackface-like amps
  44. My Copland CTA401 hums , help needed please
  45. Triode connected Pentodes in a cathode bias?
  46. Transformer as a voltage gain element
  47. Russian 6p31s tubes
  48. Ixcp 10m45s
  49. rectifier limiting resistors capacitor input
  50. arc V70 blue flash in KT90 tubes
  51. Choke?
  52. EL34 PP motorboating questions
  53. GU29 damaged
  54. PSUD2 questions
  55. Help lundahl-300bxls problem
  56. Srrp output question
  57. je lab 300b
  58. SET amp using Triode-FET complementary feedback pair ?
  59. Monarch STA-100X Refurb
  60. What causes high THD in tube amps ?
  61. Cons / Pros
  62. Preamp 6v6 grid leak resistor value?
  63. Quick question about preamps
  64. Why are mesh plates supposed to be superior?
  65. 60's and 70's GE tubes
  66. What valves are pin compatible with ECC88 / 6DJ8?
  67. Eico HF-81 OPT specs
  68. Fender Super Twin P Xformer
  69. Audio Research V70 mains transformer rewiring for 220 volts.
  70. looking for fairly simple project for Eico 81 OPT's
  71. looking for fairly simple project for Eico 81 OPT's
  72. New Hybrid Driver/Amplifier
  73. OT: vacuum diode AM detector schematics ?
  74. Sad News about George Wright
  75. Finest Chinese Tube Preamp?
  76. 12B4 Line Stage + Phono Option
  77. Crinkly tube getter – Is this bad?
  78. ??? Output Transformer - Silicon Steel or Amorphous
  79. Is it time for another CCS Group Buy?
  80. Am I Going to Kill This Amp?
  81. My version of the Simple EL84 or rise of the anti-triode.
  82. Intercomponent ground loop hum
  83. Connecting the heater to the cathode in rectifier tube
  84. Dented ASC Caps
  85. EF86 replacement
  86. Super Simple Valve Pre-amp Suggestions?
  87. 6V6 P-P Amp From RCA Manual RC-19
  88. phono stage woes...
  89. stereo SE kt88 build ... abdellah diyaudioprojects design
  90. Mounting filament transformers under chassis?
  91. More impedances for Hammond 125E
  92. Troubleshooting Push-Pull 2A3 (please help)
  93. Lost a channel in my TSE
  94. 6sl7 srpp kt66 se
  95. asking about 6sn7 and 2a3 tubes
  96. help w/ Eico hf-81
  97. Hammond PT power ratings
  98. JVC/Delmonico console info
  99. my TubeLab Amps
  100. Issues with grid choke
  101. Sharp reg. for tubelab se
  102. Calibration of Mercury 1000 tube test set
  103. 6v6 music machine build help!
  104. PCF801 Suggestions
  105. el84 200V Vg2 curves
  106. Prototype fender bassman for trade - echosonic or standel 25l15
  107. What's the advantage of E-linear
  108. Tube microphonics (article)
  109. Another Counterpoint SA-7.1 question
  110. How to test a subminiature tube
  111. C3M linestage
  112. Needinfo: Tamradio SOT-850 specs
  113. Back to Back transformers
  114. UltraLinear Screen Drive
  115. UTC CG-52AX - use as plate chokes?
  116. Chassis material
  117. Fu29 & e813cc
  118. Converting Bogen chb-35a to more guitar friendly amp (newbie inside)
  119. Tube rollers - what tubes for my RH84?
  120. What is meant when tubes are sold as "matched"?
  121. 1:1 transformer replace with line filter
  122. Old valve radios have any use?
  123. Know of any big 7 pin FW rectifier tubes?
  124. Decca Decola PX25 amp schematic
  125. Happy birthday....to me!
  126. Just tested the new E183CC
  127. Chassis mounting tubes off my PCB
  128. Tubelab SE with 2A3 Hum
  129. I need some help with the OPTs on a set of old 6V6GT monoblocks
  130. modified Headwise WCF headpone design
  131. 6em7 ,difference from brand ?
  132. Wavebourn Tower thread
  133. Sealed Lead Acid Batteries
  134. New ebay record!
  135. New ebay record!
  136. NFB, how to implement here?
  137. Recommended Mouser Electronics
  138. Utter novice looking for answers to easy questions:
  139. Hum Troubleshooting on My Tubelab SE with 2A3
  140. Trying to understand Power Supplies - The first Cap in a CRCRC
  141. 5687=e182cc???
  142. Series wire Antek Secondaries
  143. 300bxls vs mosfet :)
  144. 6N4P info
  145. Its alive!!! Aikido 5687
  146. Looking for advice,EL84 based Mono amp conversion/ restoration
  147. Looking for ideas
  148. Looking for curves for obscure tube
  149. tube life, soft start, cathode bias
  150. Triad N-68X Tranny for ^SN7 Aikido?
  151. RH84 with simple 5687 front end?
  152. Rickenbacker old amplifiers (b16 series)
  153. Aikido grounding scheme
  154. measuring voltages and currents simple se
  155. Beginner's luck -- Tubelab Simple SE on first try!
  156. 6CH6 find
  157. Shielded cables - success
  158. Heater-Cathode Voltage
  159. Battery powered tube preamps/effects (guitar)
  160. deliberately unmatching output tubes
  161. triode heater ground question
  162. 6sn7 alternative
  163. A tube amp that will drive 2 ohms or less...
  164. Looking for a simple circuit
  165. Why does my tube amp make a scratchy, popping sound?
  166. Fisher kx-100 Recitfire problem
  167. Potentiometers - USA
  168. Tube SE amplifier with 6P3S (russian tube)
  169. Plate dissipation
  170. Need help with tube models in LTSpice
  171. D3a pentode as driver? History of this tube?
  172. Tubelab SSE inrush current limiters.
  173. looking for some ideas. rebuilding heathkit w-3m amps.
  174. What's wrong with the 12AV7? Try this out!
  175. simple se and edcor gxse output transf question
  176. old tubes
  177. weird ef86 input stage in a Philips amp
  178. table radio w/ tube amp...in the designing process...anyone do this?
  179. Question: grid current related
  180. RH84 based amp
  181. My Aikido!!
  182. Tubelab Simple SE - Transformer Assistance
  183. ST70 clones
  184. Need help selecting a VR tube
  185. Help analysing Hammond organ circuit
  186. Stromberg-Carlson ASR-433
  187. WAHAHA! Our DIY tube amp is done£¡£¡
  188. Pentodes.
  189. making octal adapters
  190. How to cut ceramic
  191. Tubelab web site down for a day
  192. Trans wires in parallel or series?
  193. Tube socket for ECC88, drawing
  194. Richardson 5ar4
  195. Percy Audio / Still open? / Can't seem to get any response from them
  196. Resistor types in an amplifier
  197. simple se inrush limiter placement
  198. CRC Filter ?
  199. EICO 666 tube tester - What settings do you use?
  200. PCB edge connectors... what will they do to my sound?
  201. Tranny question
  202. Anyone here in contact with Pieter from Tribute?
  203. Fisher 500C with JJ 7591S - Optimum Bias Current?
  204. Power supply resistors power ratings
  205. Anyone tried this SE trafos?
  206. Adjustable B+ and Cathode Current linestage
  207. Possibility of Tube substitution trough MOSFETs
  208. G2 overvoltage ??
  209. Toroid transformer cover?
  210. Help me to think of name for a tube amplifier
  211. All DHT Phono Stage
  212. How Set up Aria Mini 6P14?
  213. new build - abdellah SE KT88
  214. Sources for enclosures, parts, standoffs, tubing, etc?
  215. Duncan PSUII question
  216. Bench Phono Pre Layout
  217. Imd
  218. Line Level tube
  219. Wanting to start a DIY tube amp
  220. ARC VT100 driver adjustment
  221. Valve Amplifier
  222. SE OPT's in India
  223. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  224. What is a "gridless control" tube ?
  225. simple se ground to speaker wire?
  226. Polytone Mini-brute II
  227. New 6N6P linestage
  228. Split supply, arrangement of gain and phase splitter tubes
  229. New Hybrid Amp with multiple inputs: Little Singer H-30A
  230. Help with my Transformer - vibrating
  231. Ultralinear fender?
  232. Quick transformer question
  233. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  234. Oddwatt / Oddblock Builder's Thread
  235. Tube output stage for Buffalo Saber 32-bit DAC?
  236. Silvertone Multiplex Stereo Model No. 4092 Questions
  237. 6SJ7(6J8) + 6v6 (6P6S) SE
  238. Wavebourn Tower-III High-end hybrid amp
  239. Question - Closest Russian Analog of 12BH7A
  240. Help understanding the PowerDrive circuit anaylsis
  241. Aikido pre
  242. Fixed bias: Pots near supply or tubes?
  243. Oh, those 12AU7s again...
  244. Plitron LOW Power OPT...
  245. Has anyone used The Guiguang 300B?
  246. anyone have any el86 circuits laying around?
  247. ok, power supply question, 230v - 117v conversion
  248. Big lot of tubes purchased this morning
  249. Tamura HM-1
  250. Tube Amp Design Question...

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