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  1. Chasing Hum...
  2. What do you know about the 23D4?
  3. Vacuum State RTP3C
  4. Another Tubelad SE build
  5. Noisy DC filament power supply problem on an Aikido
  6. Aikido Phono Stage with Step-up Transformers
  7. 6-volt rectifier tube
  8. Replacing output transformer questions
  9. Hey SY, were you aware of this?
  10. Where is the best place to sell a pair of OTs?
  11. EL84 tube regulator
  12. Testing 6H2P on 600a
  13. Grid stoppers, clamping, blocking and crossover distortion.
  14. Fender 125A20B output transformers?
  15. Genrad 1630AV
  16. Gary Pimms "self bias ccs" - guide for dummies
  17. Using a PC as source? + "garage sale"
  18. loktal version of 6bl7
  19. RCA SE 6bq5 amp gain problems
  20. 12V AC to 6.3v DC simple supply for idiots
  21. PPAB with plate feedback, current-mirror driver
  22. LM317 oscillating in cathode circuit
  23. Tubelab SE amp question
  24. Help with RIAA stage schematics
  25. 829B/3E29 "Triode" Push Pull Paralleled Sections
  26. Phantom Bidders on eBay
  27. Complicated psuedo-scope question
  28. Help me choose between two designs
  29. Miller Capacitance AGAIN!
  30. Channel switching / Relay / board
  31. Tossie's valve world site
  32. What is the purpose of resistive load at line output trans?
  33. 8608 pentode
  34. #26 pre amp
  35. my third RH84
  36. Miller Capacitance of triode strapped pentode
  37. 50 set amp
  38. Valuable Valves
  39. Allowable screen voltages in triode-connected pentodes
  40. grounding cable
  41. SS Driver and splitter stages used for PP tube output???
  42. Resistance coupled cascaded amplifier
  43. 6SL7 alternatives?
  44. Dynaco st70 vs Heathkit W5M
  45. Ceasar II - HighEnd Tube Mono Block Project
  46. Cool amp
  47. output tube blocking distortion problem
  48. HP 8903 software posted
  49. Rectifier for 900v DC
  50. How good are these?
  51. Brimar 6V6G different operating parameters to later GT?
  52. RCA RK290 console question
  53. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  54. Simple 6V6 Push Pull Schematic
  55. remote help for RCA RK-290 console
  56. Suggestion for a 2x15 or 2x20 amp?
  57. Spud, Schade, PP, Anti-triode ECL86
  58. Posted new P-P power amp design
  59. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  60. Vintage RCA amps
  61. 6.3V/5A DC Fillament Schematic
  62. Can I use this output transformers with a 5965?
  63. Measuring Tube Gm
  64. Can I use this output transformers with a 5695?
  65. How to design a direct coupled SE amplifier?
  66. Ordered TechTube Valves today
  67. Should I buy and part out an old Hammond tube organ?
  68. 6N6P Unbalanced Sound?
  69. DC filaments for 6550s
  70. Obliterate, delete Vibrato or Reverb circuit in blackface-like amps
  71. My Copland CTA401 hums , help needed please
  72. Triode connected Pentodes in a cathode bias?
  73. Transformer as a voltage gain element
  74. Russian 6p31s tubes
  75. Ixcp 10m45s
  76. rectifier limiting resistors capacitor input
  77. arc V70 blue flash in KT90 tubes
  78. Choke?
  79. EL34 PP motorboating questions
  80. GU29 damaged
  81. PSUD2 questions
  82. Help lundahl-300bxls problem
  83. Srrp output question
  84. je lab 300b
  85. SET amp using Triode-FET complementary feedback pair ?
  86. Monarch STA-100X Refurb
  87. What causes high THD in tube amps ?
  88. Cons / Pros
  89. Preamp 6v6 grid leak resistor value?
  90. Quick question about preamps
  91. Why are mesh plates supposed to be superior?
  92. 60's and 70's GE tubes
  93. What valves are pin compatible with ECC88 / 6DJ8?
  94. Eico HF-81 OPT specs
  95. Fender Super Twin P Xformer
  96. Audio Research V70 mains transformer rewiring for 220 volts.
  97. looking for fairly simple project for Eico 81 OPT's
  98. looking for fairly simple project for Eico 81 OPT's
  99. New Hybrid Driver/Amplifier
  100. OT: vacuum diode AM detector schematics ?
  101. Sad News about George Wright
  102. Finest Chinese Tube Preamp?
  103. 12B4 Line Stage + Phono Option
  104. Crinkly tube getter – Is this bad?
  105. ??? Output Transformer - Silicon Steel or Amorphous
  106. Is it time for another CCS Group Buy?
  107. Am I Going to Kill This Amp?
  108. My version of the Simple EL84 or rise of the anti-triode.
  109. Intercomponent ground loop hum
  110. Connecting the heater to the cathode in rectifier tube
  111. Dented ASC Caps
  112. EF86 replacement
  113. Super Simple Valve Pre-amp Suggestions?
  114. 6V6 P-P Amp From RCA Manual RC-19
  115. phono stage woes...
  116. stereo SE kt88 build ... abdellah diyaudioprojects design
  117. Mounting filament transformers under chassis?
  118. More impedances for Hammond 125E
  119. Troubleshooting Push-Pull 2A3 (please help)
  120. Lost a channel in my TSE
  121. 6sl7 srpp kt66 se
  122. asking about 6sn7 and 2a3 tubes
  123. help w/ Eico hf-81
  124. Hammond PT power ratings
  125. JVC/Delmonico console info
  126. my TubeLab Amps
  127. Issues with grid choke
  128. Sharp reg. for tubelab se
  129. Calibration of Mercury 1000 tube test set
  130. 6v6 music machine build help!
  131. PCF801 Suggestions
  132. el84 200V Vg2 curves
  133. Prototype fender bassman for trade - echosonic or standel 25l15
  134. What's the advantage of E-linear
  135. Tube microphonics (article)
  136. Another Counterpoint SA-7.1 question
  137. How to test a subminiature tube
  138. C3M linestage
  139. Needinfo: Tamradio SOT-850 specs
  140. Back to Back transformers
  141. UltraLinear Screen Drive
  142. UTC CG-52AX - use as plate chokes?
  143. Chassis material
  144. Fu29 & e813cc
  145. Converting Bogen chb-35a to more guitar friendly amp (newbie inside)
  146. Tube rollers - what tubes for my RH84?
  147. What is meant when tubes are sold as "matched"?
  148. 1:1 transformer replace with line filter
  149. Old valve radios have any use?
  150. Know of any big 7 pin FW rectifier tubes?
  151. Decca Decola PX25 amp schematic
  152. Happy birthday....to me!
  153. Just tested the new E183CC
  154. Chassis mounting tubes off my PCB
  155. Tubelab SE with 2A3 Hum
  156. I need some help with the OPTs on a set of old 6V6GT monoblocks
  157. modified Headwise WCF headpone design
  158. 6em7 ,difference from brand ?
  159. Wavebourn Tower thread
  160. Sealed Lead Acid Batteries
  161. New ebay record!
  162. New ebay record!
  163. NFB, how to implement here?
  164. Recommended Mouser Electronics
  165. Utter novice looking for answers to easy questions:
  166. Hum Troubleshooting on My Tubelab SE with 2A3
  167. Trying to understand Power Supplies - The first Cap in a CRCRC
  168. 5687=e182cc???
  169. Series wire Antek Secondaries
  170. 300bxls vs mosfet :)
  171. 6N4P info
  172. Its alive!!! Aikido 5687
  173. Looking for advice,EL84 based Mono amp conversion/ restoration
  174. Looking for ideas
  175. Looking for curves for obscure tube
  176. tube life, soft start, cathode bias
  177. Triad N-68X Tranny for ^SN7 Aikido?
  178. RH84 with simple 5687 front end?
  179. Rickenbacker old amplifiers (b16 series)
  180. Aikido grounding scheme
  181. measuring voltages and currents simple se
  182. Beginner's luck -- Tubelab Simple SE on first try!
  183. 6CH6 find
  184. Shielded cables - success
  185. Heater-Cathode Voltage
  186. Battery powered tube preamps/effects (guitar)
  187. deliberately unmatching output tubes
  188. triode heater ground question
  189. 6sn7 alternative
  190. A tube amp that will drive 2 ohms or less...
  191. Looking for a simple circuit
  192. Why does my tube amp make a scratchy, popping sound?
  193. Fisher kx-100 Recitfire problem
  194. Potentiometers - USA
  195. Tube SE amplifier with 6P3S (russian tube)
  196. Plate dissipation
  197. Need help with tube models in LTSpice
  198. D3a pentode as driver? History of this tube?
  199. Tubelab SSE inrush current limiters.
  200. looking for some ideas. rebuilding heathkit w-3m amps.
  201. What's wrong with the 12AV7? Try this out!
  202. simple se and edcor gxse output transf question
  203. old tubes
  204. weird ef86 input stage in a Philips amp
  205. table radio w/ tube amp...in the designing process...anyone do this?
  206. Question: grid current related
  207. RH84 based amp
  208. My Aikido!!
  209. Tubelab Simple SE - Transformer Assistance
  210. ST70 clones
  211. Need help selecting a VR tube
  212. Help analysing Hammond organ circuit
  213. Stromberg-Carlson ASR-433
  214. WAHAHA! Our DIY tube amp is done£¡£¡
  215. Pentodes.
  216. making octal adapters
  217. How to cut ceramic
  218. Tubelab web site down for a day
  219. Trans wires in parallel or series?
  220. Tube socket for ECC88, drawing
  221. Richardson 5ar4
  222. Percy Audio / Still open? / Can't seem to get any response from them
  223. Resistor types in an amplifier
  224. simple se inrush limiter placement
  225. CRC Filter ?
  226. EICO 666 tube tester - What settings do you use?
  227. PCB edge connectors... what will they do to my sound?
  228. Tranny question
  229. Anyone here in contact with Pieter from Tribute?
  230. Fisher 500C with JJ 7591S - Optimum Bias Current?
  231. Power supply resistors power ratings
  232. Anyone tried this SE trafos?
  233. Adjustable B+ and Cathode Current linestage
  234. Possibility of Tube substitution trough MOSFETs
  235. G2 overvoltage ??
  236. Toroid transformer cover?
  237. Help me to think of name for a tube amplifier
  238. All DHT Phono Stage
  239. How Set up Aria Mini 6P14?
  240. new build - abdellah SE KT88
  241. Sources for enclosures, parts, standoffs, tubing, etc?
  242. Duncan PSUII question
  243. Bench Phono Pre Layout
  244. Imd
  245. Line Level tube
  246. Wanting to start a DIY tube amp
  247. ARC VT100 driver adjustment
  248. Valve Amplifier
  249. SE OPT's in India
  250. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?

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