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  1. 1:1 transformer replace with line filter
  2. Old valve radios have any use?
  3. Know of any big 7 pin FW rectifier tubes?
  4. Decca Decola PX25 amp schematic
  5. Happy birthday....to me!
  6. Just tested the new E183CC
  7. Chassis mounting tubes off my PCB
  8. Tubelab SE with 2A3 Hum
  9. I need some help with the OPTs on a set of old 6V6GT monoblocks
  10. modified Headwise WCF headpone design
  11. 6em7 ,difference from brand ?
  12. Wavebourn Tower thread
  13. Sealed Lead Acid Batteries
  14. New ebay record!
  15. New ebay record!
  16. NFB, how to implement here?
  17. Recommended Mouser Electronics
  18. Utter novice looking for answers to easy questions:
  19. Hum Troubleshooting on My Tubelab SE with 2A3
  20. Trying to understand Power Supplies - The first Cap in a CRCRC
  21. 5687=e182cc???
  22. Series wire Antek Secondaries
  23. 300bxls vs mosfet :)
  24. 6N4P info
  25. Its alive!!! Aikido 5687
  26. Looking for advice,EL84 based Mono amp conversion/ restoration
  27. Looking for ideas
  28. Looking for curves for obscure tube
  29. tube life, soft start, cathode bias
  30. Triad N-68X Tranny for ^SN7 Aikido?
  31. RH84 with simple 5687 front end?
  32. Aikido grounding scheme
  33. measuring voltages and currents simple se
  34. Beginner's luck -- Tubelab Simple SE on first try!
  35. 6CH6 find
  36. Shielded cables - success
  37. Heater-Cathode Voltage
  38. deliberately unmatching output tubes
  39. triode heater ground question
  40. 6sn7 alternative
  41. A tube amp that will drive 2 ohms or less...
  42. Looking for a simple circuit
  43. Why does my tube amp make a scratchy, popping sound?
  44. Fisher kx-100 Recitfire problem
  45. Potentiometers - USA
  46. Tube SE amplifier with 6P3S (russian tube)
  47. Plate dissipation
  48. Need help with tube models in LTSpice
  49. D3a pentode as driver? History of this tube?
  50. Tubelab SSE inrush current limiters.
  51. looking for some ideas. rebuilding heathkit w-3m amps.
  52. What's wrong with the 12AV7? Try this out!
  53. simple se and edcor gxse output transf question
  54. old tubes
  55. weird ef86 input stage in a Philips amp
  56. table radio w/ tube amp...in the designing process...anyone do this?
  57. Question: grid current related
  58. RH84 based amp
  59. My Aikido!!
  60. Tubelab Simple SE - Transformer Assistance
  61. ST70 clones
  62. Need help selecting a VR tube
  63. Help analysing Hammond organ circuit
  64. Stromberg-Carlson ASR-433
  65. WAHAHA! Our DIY tube amp is doneŁĄŁĄ
  66. Pentodes.
  67. making octal adapters
  68. How to cut ceramic
  69. Tubelab web site down for a day
  70. Trans wires in parallel or series?
  71. Tube socket for ECC88, drawing
  72. Richardson 5ar4
  73. Percy Audio / Still open? / Can't seem to get any response from them
  74. simple se inrush limiter placement
  75. CRC Filter ?
  76. EICO 666 tube tester - What settings do you use?
  77. PCB edge connectors... what will they do to my sound?
  78. Tranny question
  79. Anyone here in contact with Pieter from Tribute?
  80. Fisher 500C with JJ 7591S - Optimum Bias Current?
  81. Power supply resistors power ratings
  82. Anyone tried this SE trafos?
  83. Adjustable B+ and Cathode Current linestage
  84. Possibility of Tube substitution trough MOSFETs
  85. G2 overvoltage ??
  86. Toroid transformer cover?
  87. Help me to think of name for a tube amplifier
  88. All DHT Phono Stage
  89. How Set up Aria Mini 6P14?
  90. new build - abdellah SE KT88
  91. Sources for enclosures, parts, standoffs, tubing, etc?
  92. Duncan PSUII question
  93. Bench Phono Pre Layout
  94. Imd
  95. Line Level tube
  96. Wanting to start a DIY tube amp
  97. ARC VT100 driver adjustment
  98. Valve Amplifier
  99. SE OPT's in India
  100. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  101. What is a "gridless control" tube ?
  102. simple se ground to speaker wire?
  103. Polytone Mini-brute II
  104. New 6N6P linestage
  105. Split supply, arrangement of gain and phase splitter tubes
  106. New Hybrid Amp with multiple inputs: Little Singer H-30A
  107. Help with my Transformer - vibrating
  108. Quick transformer question
  109. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  110. Oddwatt / Oddblock Builder's Thread
  111. Tube output stage for Buffalo Saber 32-bit DAC?
  112. Silvertone Multiplex Stereo Model No. 4092 Questions
  113. 6SJ7(6J8) + 6v6 (6P6S) SE
  114. Wavebourn Tower-III High-end hybrid amp
  115. Question - Closest Russian Analog of 12BH7A
  116. Help understanding the PowerDrive circuit anaylsis
  117. Aikido pre
  118. Fixed bias: Pots near supply or tubes?
  119. Oh, those 12AU7s again...
  120. Plitron LOW Power OPT...
  121. Has anyone used The Guiguang 300B?
  122. anyone have any el86 circuits laying around?
  123. ok, power supply question, 230v - 117v conversion
  124. Big lot of tubes purchased this morning
  125. Tamura HM-1
  126. Tube Amp Design Question...
  127. Cathode Bias questions
  128. Tube Hybrid Shunt Regulator ... will this even work?
  129. Forgive me TubeLab ... I have sinned
  130. Broskie regulator oscillates
  131. Yushang-Audio Classic 16.6
  132. Tube PreAmplifier Kit suggestions..
  133. Sourcing Chassis Access Panels
  134. Running 4 ohm speakers with my Simple SE
  135. Cavalli OCL Buffer
  136. wooohooo! Three Rowe AMI amps for $200NZD!
  137. Quick Volume pot question
  138. Basic choke quality/sonic benefit questions
  139. Tubelab SE buzzing noise from the speaker
  140. lighspeed attenuator w/Simple SE AMP
  141. Tube rectifiers for Dummies
  142. help on a SE 4 channel tube amp for auto?
  143. Audio Output Transformers
  144. K-502 Help
  145. First post, first project RH84
  146. Source for tube cages?
  147. Simple SE optimum layout for hum
  148. Audio Transformers - Help
  149. Gran Tenor
  150. Toroidal Output Tranformers
  151. Cathode Follower confusion
  152. Tube newbie problem
  153. Replacement of KT88's. No mods' necessary?
  154. Phase splitter types
  155. Yaqin VK-2100 mods
  156. Heptode oscillators
  157. tube amp repair in DFW area
  158. A novice scope user - measuring noise?
  159. Hickok 600A & KT88
  160. Multifilar winding
  161. Measuring Hi-Fi Amplifiers
  162. Help with 30A5 tube amp schematic
  163. simple se troubleshooting
  164. 6SN7 operating points input gain stage and concertina
  165. looking for pentodes for scope deflection
  166. Cary 845 schematics
  167. newbie simple SE issue
  168. Power Transformer 110/230V Windings Question
  169. OPT Voltage spike protection with zeners
  170. IRIS OTL info
  171. Precise 111 tube tester - missing tubes
  172. ping yves
  173. Filters
  174. 2X2 as amplifier rectifier
  175. SPMSU for heater supplies
  176. Shipping Tube Gear
  177. Amplifier squeel at zero volume
  178. mercury rectifier for electrostatic bias
  179. My little coupling-cap-test in a UL-70W-Amp
  180. Electra-Print 300BDRD
  181. K-502... upgrading the OPT's with Hammonds
  182. Tube eq or tone control - how to design it?
  183. Help, strange glowing in KT88
  184. Need opinions about this tube circuit
  185. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  186. Max current for Edcore GXSE10-8-2.5K
  187. And for the man who has everything....
  188. 1J6G recommended operating point?
  189. DHT bias and filament supply in one?
  190. Tubelab Simple SE Sound Quality
  191. 3d amp modelling (for solidworks)
  192. RSC Stereo Ten.
  193. Weird Bias on Simple SE
  194. Help - noisy phono stage
  195. 2A3 Max Grid Current Rating?
  196. Futterman style 6AS7 OTL with other tubes
  197. Low/Mid-Watt Amps
  198. Calling all builders of the Swenson/Pimm HV Reg
  199. AZ1 problem: broken metal part
  200. More Grunt from Aikido Needed to drive PL509's
  201. Correct OPT and other adjustments on old Bogen amp
  202. Ebl 21 Se Amplifier
  203. OT primary impedance calculation
  204. Akai M5?
  205. Identify the DHT
  206. Fountek Altitude 3500, any opinions?
  207. 31 tube in output
  208. dynaco system- volume remains
  209. Left channel BAD in stereo! HELP please! It's my first tube set
  210. OPT with power transfrormer core
  211. 300b dpa
  212. IV single stage inverting Feedback Amp
  213. TechTubes - The return of Blackburn
  214. simple se how to wire a auxiliary cap
  215. Tradeoffs in analog circuit design, and so on...
  216. Has anyone Received The new Techtubes yet?
  217. 6P3S-E in place of 6V6
  218. EL34, KT88, High Voltage?, VTL..
  219. 100W 6L6 amp sounds harsh at high Volume
  220. Hickok 533 / 600 settings for 6GM8 / ECC86
  221. Need help: amp blowing fuses
  222. Best voltage reference device for a cascode BJT CCS?
  223. Tube power amp noise problem
  224. tube oscillator help.
  225. Finally have some big chokes, how would you use them?
  226. Tube amplifier
  227. 12AX7 heater filament resistance
  228. Choke input LC chain questions..Q?, minload?
  229. LED bias for 12ax7 oscillator
  230. Yaqin VK-2100 hybrid running 4 ohm speakers
  231. VR shunt regulator or RC filter
  232. Screen Mode Mesh Plate?
  233. EL34 simple push pull class B : why 100W ?
  234. Scored Some Bendix 5992
  235. Tube Substitutions Online ???
  236. Tube Phono Preamp PCB Ebay? are these any good
  237. Testing an EL84 as a 6V6
  238. Low Voltage (~16-20V) Tube
  239. Basic Oscilloscope question
  240. Cathodyne Questions
  241. 6922 for a Noob
  242. Cathodyne Phase splitter simulation problem?
  243. How would you improve this EL84 SE circuit?
  244. Power transformer HT/B+ voltages
  245. Help with cathode follower circuit
  246. RH84 bias change whith different el84 is use
  247. No more power transformers?
  248. K-502 Filament supply (or K-12M)
  249. **LOL** Chinese surround sound amp identification
  250. Tubelab SE driver gain

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