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  1. looking for some ideas. rebuilding heathkit w-3m amps.
  2. What's wrong with the 12AV7? Try this out!
  3. simple se and edcor gxse output transf question
  4. old tubes
  5. weird ef86 input stage in a Philips amp
  6. table radio w/ tube amp...in the designing process...anyone do this?
  7. Question: grid current related
  8. RH84 based amp
  9. My Aikido!!
  10. Tubelab Simple SE - Transformer Assistance
  11. ST70 clones
  12. Need help selecting a VR tube
  13. Help analysing Hammond organ circuit
  14. Stromberg-Carlson ASR-433
  15. WAHAHA! Our DIY tube amp is doneŁĄŁĄ
  16. Pentodes.
  17. making octal adapters
  18. How to cut ceramic
  19. Tubelab web site down for a day
  20. Trans wires in parallel or series?
  21. Tube socket for ECC88, drawing
  22. Richardson 5ar4
  23. Percy Audio / Still open? / Can't seem to get any response from them
  24. Resistor types in an amplifier
  25. simple se inrush limiter placement
  26. CRC Filter ?
  27. EICO 666 tube tester - What settings do you use?
  28. PCB edge connectors... what will they do to my sound?
  29. Tranny question
  30. Anyone here in contact with Pieter from Tribute?
  31. Fisher 500C with JJ 7591S - Optimum Bias Current?
  32. Power supply resistors power ratings
  33. Anyone tried this SE trafos?
  34. Adjustable B+ and Cathode Current linestage
  35. Possibility of Tube substitution trough MOSFETs
  36. G2 overvoltage ??
  37. Toroid transformer cover?
  38. Help me to think of name for a tube amplifier
  39. All DHT Phono Stage
  40. How Set up Aria Mini 6P14?
  41. new build - abdellah SE KT88
  42. Sources for enclosures, parts, standoffs, tubing, etc?
  43. Duncan PSUII question
  44. Bench Phono Pre Layout
  45. Imd
  46. Line Level tube
  47. Wanting to start a DIY tube amp
  48. ARC VT100 driver adjustment
  49. Valve Amplifier
  50. SE OPT's in India
  51. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  52. What is a "gridless control" tube ?
  53. simple se ground to speaker wire?
  54. Polytone Mini-brute II
  55. New 6N6P linestage
  56. Split supply, arrangement of gain and phase splitter tubes
  57. New Hybrid Amp with multiple inputs: Little Singer H-30A
  58. Help with my Transformer - vibrating
  59. Ultralinear fender?
  60. Quick transformer question
  61. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  62. Oddwatt / Oddblock Builder's Thread
  63. Tube output stage for Buffalo Saber 32-bit DAC?
  64. Silvertone Multiplex Stereo Model No. 4092 Questions
  65. 6SJ7(6J8) + 6v6 (6P6S) SE
  66. Wavebourn Tower-III High-end hybrid amp
  67. Question - Closest Russian Analog of 12BH7A
  68. Help understanding the PowerDrive circuit anaylsis
  69. Aikido pre
  70. Fixed bias: Pots near supply or tubes?
  71. Oh, those 12AU7s again...
  72. Plitron LOW Power OPT...
  73. Has anyone used The Guiguang 300B?
  74. anyone have any el86 circuits laying around?
  75. ok, power supply question, 230v - 117v conversion
  76. Big lot of tubes purchased this morning
  77. Tamura HM-1
  78. Tube Amp Design Question...
  79. Cathode Bias questions
  80. Tube Hybrid Shunt Regulator ... will this even work?
  81. Forgive me TubeLab ... I have sinned
  82. Broskie regulator oscillates
  83. Yushang-Audio Classic 16.6
  84. Tube PreAmplifier Kit suggestions..
  85. Sourcing Chassis Access Panels
  86. Running 4 ohm speakers with my Simple SE
  87. YAQIN SD-32A Tube CD/HDCD Player
  88. Cavalli OCL Buffer
  89. wooohooo! Three Rowe AMI amps for $200NZD!
  90. Quick Volume pot question
  91. Basic choke quality/sonic benefit questions
  92. Tubelab SE buzzing noise from the speaker
  93. lighspeed attenuator w/Simple SE AMP
  94. Tube rectifiers for Dummies
  95. help on a SE 4 channel tube amp for auto?
  96. Audio Output Transformers
  97. K-502 Help
  98. High gain guitar preamp kits!
  99. First post, first project RH84
  100. Source for tube cages?
  101. Simple SE optimum layout for hum
  102. Audio Transformers - Help
  103. Gran Tenor
  104. Toroidal Output Tranformers
  105. Cathode Follower confusion
  106. Tube newbie problem
  107. Replacement of KT88's. No mods' necessary?
  108. Phase splitter types
  109. Yaqin VK-2100 mods
  110. Heptode oscillators
  111. tube amp repair in DFW area
  112. A novice scope user - measuring noise?
  113. Hickok 600A & KT88
  114. Multifilar winding
  115. Measuring Hi-Fi Amplifiers
  116. Help with 30A5 tube amp schematic
  117. simple se troubleshooting
  118. 6SN7 operating points input gain stage and concertina
  119. looking for pentodes for scope deflection
  120. Cary 845 schematics
  121. newbie simple SE issue
  122. Power Transformer 110/230V Windings Question
  123. OPT Voltage spike protection with zeners
  124. IRIS OTL info
  125. Precise 111 tube tester - missing tubes
  126. ping yves
  127. Filters
  128. 2X2 as amplifier rectifier
  129. SPMSU for heater supplies
  130. Shipping Tube Gear
  131. Amplifier squeel at zero volume
  132. mercury rectifier for electrostatic bias
  133. My little coupling-cap-test in a UL-70W-Amp
  134. Electra-Print 300BDRD
  135. K-502... upgrading the OPT's with Hammonds
  136. Tube eq or tone control - how to design it?
  137. Help, strange glowing in KT88
  138. Need opinions about this tube circuit
  139. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  140. Max current for Edcore GXSE10-8-2.5K
  141. And for the man who has everything....
  142. 1J6G recommended operating point?
  143. DHT bias and filament supply in one?
  144. Tubelab Simple SE Sound Quality
  145. 3d amp modelling (for solidworks)
  146. RSC Stereo Ten.
  147. Weird Bias on Simple SE
  148. Help - noisy phono stage
  149. 2A3 Max Grid Current Rating?
  150. Futterman style 6AS7 OTL with other tubes
  151. Low/Mid-Watt Amps
  152. Calling all builders of the Swenson/Pimm HV Reg
  153. AZ1 problem: broken metal part
  154. More Grunt from Aikido Needed to drive PL509's
  155. Correct OPT and other adjustments on old Bogen amp
  156. Ebl 21 Se Amplifier
  157. OT primary impedance calculation
  158. Akai M5?
  159. Identify the DHT
  160. Fountek Altitude 3500, any opinions?
  161. 31 tube in output
  162. dynaco system- volume remains
  163. Left channel BAD in stereo! HELP please! It's my first tube set
  164. OPT with power transfrormer core
  165. 300b dpa
  166. IV single stage inverting Feedback Amp
  167. TechTubes - The return of Blackburn
  168. simple se how to wire a auxiliary cap
  169. Tradeoffs in analog circuit design, and so on...
  170. Has anyone Received The new Techtubes yet?
  171. 6P3S-E in place of 6V6
  172. EL34, KT88, High Voltage?, VTL..
  173. 100W 6L6 amp sounds harsh at high Volume
  174. Hickok 533 / 600 settings for 6GM8 / ECC86
  175. Need help: amp blowing fuses
  176. Best voltage reference device for a cascode BJT CCS?
  177. Tube power amp noise problem
  178. tube oscillator help.
  179. Finally have some big chokes, how would you use them?
  180. Tube amplifier
  181. Mesa Boogie bass amp quiet
  182. 12AX7 heater filament resistance
  183. Choke input LC chain questions..Q?, minload?
  184. LED bias for 12ax7 oscillator
  185. Yaqin VK-2100 hybrid running 4 ohm speakers
  186. VR shunt regulator or RC filter
  187. Screen Mode Mesh Plate?
  188. EL34 simple push pull class B : why 100W ?
  189. Scored Some Bendix 5992
  190. Tube Substitutions Online ???
  191. Resistor pack for tube amp
  192. Tube Phono Preamp PCB Ebay? are these any good
  193. Testing an EL84 as a 6V6
  194. Low Voltage (~16-20V) Tube
  195. Basic Oscilloscope question
  196. Cathodyne Questions
  197. 6922 for a Noob
  198. Cathodyne Phase splitter simulation problem?
  199. How would you improve this EL84 SE circuit?
  200. Power transformer HT/B+ voltages
  201. Help with cathode follower circuit
  202. RH84 bias change whith different el84 is use
  203. No more power transformers?
  204. K-502 Filament supply (or K-12M)
  205. **LOL** Chinese surround sound amp identification
  206. Tubelab SE driver gain
  207. MOSFET for power drive for low powered 845
  208. Aikido line & phono Guru's advice for a newbie pls
  209. Need Tube kits of above 75W Single Ended Class A amp
  210. First Project: 300B SET Monoblocks
  211. Where do you get those cool layout diagrams?
  212. Simple SE grounding -- metal spacers/standoffs?
  213. My Simple SE via Akihabara
  214. Power-On Time Delay Circuit
  215. GM-70 Build Issues
  216. Blue glass inside tubes
  217. Ruby Tuesdays
  218. Wich valve to start?
  219. Tubes that have round/curved plates. . .
  220. Calculating current capacity?
  221. AKAI 1710W R2R, OPT Question?
  222. Ringed Tube Grills / Guards ?
  223. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  224. Please help identify this tube - Shuguang 6922?
  225. Dedicated 6.3v filament transformer 240v primary
  226. can someone check this thread please
  227. Amp refurbishing question.....
  228. Tube mounting position
  229. 6N6P - recommended operating point
  230. Interstage transformer questions
  231. Help identifying resistor value
  232. New Audio Note M10
  233. K501 vs K12M
  234. what are these (i hope cheap) resistors ?
  235. Potentiometer value for 6SL7 input
  236. PSU Designer II question
  237. Lost Thread-High VOltage Regulated Power Supply
  238. 6B4G schematic - opinions please!!
  239. Plate current Question
  240. rh84 bias question.
  241. On/off LED wiring question
  242. Stabilized wood
  243. Heater to Cathode max voltage specs, including signal swings?
  244. Any 9- pin rectifier tubes with separate cathodes?
  245. Final checkout problems with Tubelab SE
  246. 6G-A4 anyone have a datasheet?
  247. Bias Protection Resistors in DC Coupled Amp
  248. EL84 push pull
  249. pcb printing companies
  250. Help! tube amp burnt?

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