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  1. UltraLinear Screen Drive
  2. UTC CG-52AX - use as plate chokes?
  3. Chassis material
  4. Fu29 & e813cc
  5. Converting Bogen chb-35a to more guitar friendly amp (newbie inside)
  6. Tube rollers - what tubes for my RH84?
  7. What is meant when tubes are sold as "matched"?
  8. 1:1 transformer replace with line filter
  9. Old valve radios have any use?
  10. Know of any big 7 pin FW rectifier tubes?
  11. Decca Decola PX25 amp schematic
  12. Happy birthday....to me!
  13. Just tested the new E183CC
  14. Chassis mounting tubes off my PCB
  15. Tubelab SE with 2A3 Hum
  16. I need some help with the OPTs on a set of old 6V6GT monoblocks
  17. modified Headwise WCF headpone design
  18. 6em7 ,difference from brand ?
  19. Wavebourn Tower thread
  20. Sealed Lead Acid Batteries
  21. New ebay record!
  22. New ebay record!
  23. NFB, how to implement here?
  24. Recommended Mouser Electronics
  25. Utter novice looking for answers to easy questions:
  26. Hum Troubleshooting on My Tubelab SE with 2A3
  27. Trying to understand Power Supplies - The first Cap in a CRCRC
  28. 5687=e182cc???
  29. Series wire Antek Secondaries
  30. 300bxls vs mosfet :)
  31. 6N4P info
  32. Its alive!!! Aikido 5687
  33. Looking for advice,EL84 based Mono amp conversion/ restoration
  34. Looking for ideas
  35. Looking for curves for obscure tube
  36. tube life, soft start, cathode bias
  37. Triad N-68X Tranny for ^SN7 Aikido?
  38. RH84 with simple 5687 front end?
  39. Rickenbacker old amplifiers (b16 series)
  40. Aikido grounding scheme
  41. measuring voltages and currents simple se
  42. Beginner's luck -- Tubelab Simple SE on first try!
  43. 6CH6 find
  44. Shielded cables - success
  45. Heater-Cathode Voltage
  46. Battery powered tube preamps/effects (guitar)
  47. deliberately unmatching output tubes
  48. triode heater ground question
  49. 6sn7 alternative
  50. A tube amp that will drive 2 ohms or less...
  51. Looking for a simple circuit
  52. Why does my tube amp make a scratchy, popping sound?
  53. Fisher kx-100 Recitfire problem
  54. Potentiometers - USA
  55. Tube SE amplifier with 6P3S (russian tube)
  56. Plate dissipation
  57. Need help with tube models in LTSpice
  58. D3a pentode as driver? History of this tube?
  59. Tubelab SSE inrush current limiters.
  60. looking for some ideas. rebuilding heathkit w-3m amps.
  61. What's wrong with the 12AV7? Try this out!
  62. simple se and edcor gxse output transf question
  63. old tubes
  64. weird ef86 input stage in a Philips amp
  65. table radio w/ tube amp...in the designing process...anyone do this?
  66. Question: grid current related
  67. RH84 based amp
  68. My Aikido!!
  69. Tubelab Simple SE - Transformer Assistance
  70. ST70 clones
  71. Need help selecting a VR tube
  72. Help analysing Hammond organ circuit
  73. Stromberg-Carlson ASR-433
  74. WAHAHA! Our DIY tube amp is doneŁĄŁĄ
  75. Pentodes.
  76. making octal adapters
  77. How to cut ceramic
  78. Tubelab web site down for a day
  79. Trans wires in parallel or series?
  80. Tube socket for ECC88, drawing
  81. Richardson 5ar4
  82. Percy Audio / Still open? / Can't seem to get any response from them
  83. Resistor types in an amplifier
  84. simple se inrush limiter placement
  85. CRC Filter ?
  86. EICO 666 tube tester - What settings do you use?
  87. PCB edge connectors... what will they do to my sound?
  88. Tranny question
  89. Anyone here in contact with Pieter from Tribute?
  90. Fisher 500C with JJ 7591S - Optimum Bias Current?
  91. Power supply resistors power ratings
  92. Anyone tried this SE trafos?
  93. Adjustable B+ and Cathode Current linestage
  94. Possibility of Tube substitution trough MOSFETs
  95. G2 overvoltage ??
  96. Toroid transformer cover?
  97. Help me to think of name for a tube amplifier
  98. All DHT Phono Stage
  99. How Set up Aria Mini 6P14?
  100. new build - abdellah SE KT88
  101. Sources for enclosures, parts, standoffs, tubing, etc?
  102. Duncan PSUII question
  103. Bench Phono Pre Layout
  104. Imd
  105. Line Level tube
  106. Wanting to start a DIY tube amp
  107. ARC VT100 driver adjustment
  108. Valve Amplifier
  109. SE OPT's in India
  110. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  111. What is a "gridless control" tube ?
  112. simple se ground to speaker wire?
  113. Polytone Mini-brute II
  114. New 6N6P linestage
  115. Split supply, arrangement of gain and phase splitter tubes
  116. New Hybrid Amp with multiple inputs: Little Singer H-30A
  117. Help with my Transformer - vibrating
  118. Ultralinear fender?
  119. Quick transformer question
  120. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  121. Oddwatt / Oddblock Builder's Thread
  122. Tube output stage for Buffalo Saber 32-bit DAC?
  123. Silvertone Multiplex Stereo Model No. 4092 Questions
  124. 6SJ7(6J8) + 6v6 (6P6S) SE
  125. Wavebourn Tower-III High-end hybrid amp
  126. Question - Closest Russian Analog of 12BH7A
  127. Help understanding the PowerDrive circuit anaylsis
  128. Aikido pre
  129. Fixed bias: Pots near supply or tubes?
  130. Oh, those 12AU7s again...
  131. Plitron LOW Power OPT...
  132. Has anyone used The Guiguang 300B?
  133. anyone have any el86 circuits laying around?
  134. ok, power supply question, 230v - 117v conversion
  135. Big lot of tubes purchased this morning
  136. Tamura HM-1
  137. Tube Amp Design Question...
  138. Cathode Bias questions
  139. Tube Hybrid Shunt Regulator ... will this even work?
  140. Forgive me TubeLab ... I have sinned
  141. Broskie regulator oscillates
  142. Yushang-Audio Classic 16.6
  143. Tube PreAmplifier Kit suggestions..
  144. Sourcing Chassis Access Panels
  145. Running 4 ohm speakers with my Simple SE
  146. YAQIN SD-32A Tube CD/HDCD Player
  147. Cavalli OCL Buffer
  148. wooohooo! Three Rowe AMI amps for $200NZD!
  149. Quick Volume pot question
  150. Basic choke quality/sonic benefit questions
  151. Tubelab SE buzzing noise from the speaker
  152. lighspeed attenuator w/Simple SE AMP
  153. Tube rectifiers for Dummies
  154. help on a SE 4 channel tube amp for auto?
  155. Audio Output Transformers
  156. K-502 Help
  157. High gain guitar preamp kits!
  158. First post, first project RH84
  159. Source for tube cages?
  160. Simple SE optimum layout for hum
  161. Audio Transformers - Help
  162. Gran Tenor
  163. Toroidal Output Tranformers
  164. Cathode Follower confusion
  165. Tube newbie problem
  166. Replacement of KT88's. No mods' necessary?
  167. Phase splitter types
  168. Yaqin VK-2100 mods
  169. Heptode oscillators
  170. tube amp repair in DFW area
  171. A novice scope user - measuring noise?
  172. Hickok 600A & KT88
  173. Multifilar winding
  174. Measuring Hi-Fi Amplifiers
  175. Help with 30A5 tube amp schematic
  176. simple se troubleshooting
  177. 6SN7 operating points input gain stage and concertina
  178. looking for pentodes for scope deflection
  179. Cary 845 schematics
  180. newbie simple SE issue
  181. Power Transformer 110/230V Windings Question
  182. OPT Voltage spike protection with zeners
  183. IRIS OTL info
  184. Precise 111 tube tester - missing tubes
  185. ping yves
  186. Filters
  187. 2X2 as amplifier rectifier
  188. SPMSU for heater supplies
  189. Shipping Tube Gear
  190. Amplifier squeel at zero volume
  191. mercury rectifier for electrostatic bias
  192. My little coupling-cap-test in a UL-70W-Amp
  193. Electra-Print 300BDRD
  194. K-502... upgrading the OPT's with Hammonds
  195. Tube eq or tone control - how to design it?
  196. Help, strange glowing in KT88
  197. Need opinions about this tube circuit
  198. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  199. Max current for Edcore GXSE10-8-2.5K
  200. And for the man who has everything....
  201. 1J6G recommended operating point?
  202. DHT bias and filament supply in one?
  203. Tubelab Simple SE Sound Quality
  204. 3d amp modelling (for solidworks)
  205. RSC Stereo Ten.
  206. Weird Bias on Simple SE
  207. Help - noisy phono stage
  208. 2A3 Max Grid Current Rating?
  209. Futterman style 6AS7 OTL with other tubes
  210. Low/Mid-Watt Amps
  211. Calling all builders of the Swenson/Pimm HV Reg
  212. AZ1 problem: broken metal part
  213. More Grunt from Aikido Needed to drive PL509's
  214. Correct OPT and other adjustments on old Bogen amp
  215. Ebl 21 Se Amplifier
  216. OT primary impedance calculation
  217. Akai M5?
  218. Identify the DHT
  219. Fountek Altitude 3500, any opinions?
  220. 31 tube in output
  221. dynaco system- volume remains
  222. Left channel BAD in stereo! HELP please! It's my first tube set
  223. OPT with power transfrormer core
  224. 300b dpa
  225. IV single stage inverting Feedback Amp
  226. TechTubes - The return of Blackburn
  227. simple se how to wire a auxiliary cap
  228. Tradeoffs in analog circuit design, and so on...
  229. Has anyone Received The new Techtubes yet?
  230. 6P3S-E in place of 6V6
  231. EL34, KT88, High Voltage?, VTL..
  232. 100W 6L6 amp sounds harsh at high Volume
  233. Hickok 533 / 600 settings for 6GM8 / ECC86
  234. Need help: amp blowing fuses
  235. Best voltage reference device for a cascode BJT CCS?
  236. Tube power amp noise problem
  237. tube oscillator help.
  238. Finally have some big chokes, how would you use them?
  239. Tube amplifier
  240. Mesa Boogie bass amp quiet
  241. 12AX7 heater filament resistance
  242. Choke input LC chain questions..Q?, minload?
  243. LED bias for 12ax7 oscillator
  244. Yaqin VK-2100 hybrid running 4 ohm speakers
  245. VR shunt regulator or RC filter
  246. Screen Mode Mesh Plate?
  247. EL34 simple push pull class B : why 100W ?
  248. Scored Some Bendix 5992
  249. Tube Substitutions Online ???
  250. Resistor pack for tube amp

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