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  1. triode heater ground question
  2. 6sn7 alternative
  3. A tube amp that will drive 2 ohms or less...
  4. Looking for a simple circuit
  5. Why does my tube amp make a scratchy, popping sound?
  6. Fisher kx-100 Recitfire problem
  7. Potentiometers - USA
  8. Tube SE amplifier with 6P3S (russian tube)
  9. Plate dissipation
  10. Need help with tube models in LTSpice
  11. D3a pentode as driver? History of this tube?
  12. Tubelab SSE inrush current limiters.
  13. looking for some ideas. rebuilding heathkit w-3m amps.
  14. What's wrong with the 12AV7? Try this out!
  15. simple se and edcor gxse output transf question
  16. old tubes
  17. weird ef86 input stage in a Philips amp
  18. table radio w/ tube amp...in the designing process...anyone do this?
  19. Question: grid current related
  20. RH84 based amp
  21. My Aikido!!
  22. Tubelab Simple SE - Transformer Assistance
  23. ST70 clones
  24. Need help selecting a VR tube
  25. Help analysing Hammond organ circuit
  26. Stromberg-Carlson ASR-433
  27. WAHAHA! Our DIY tube amp is doneŁĄŁĄ
  28. Pentodes.
  29. making octal adapters
  30. How to cut ceramic
  31. Tubelab web site down for a day
  32. Trans wires in parallel or series?
  33. Tube socket for ECC88, drawing
  34. Richardson 5ar4
  35. Percy Audio / Still open? / Can't seem to get any response from them
  36. Resistor types in an amplifier
  37. simple se inrush limiter placement
  38. CRC Filter ?
  39. EICO 666 tube tester - What settings do you use?
  40. PCB edge connectors... what will they do to my sound?
  41. Tranny question
  42. Anyone here in contact with Pieter from Tribute?
  43. Fisher 500C with JJ 7591S - Optimum Bias Current?
  44. Power supply resistors power ratings
  45. Anyone tried this SE trafos?
  46. Adjustable B+ and Cathode Current linestage
  47. Possibility of Tube substitution trough MOSFETs
  48. G2 overvoltage ??
  49. Toroid transformer cover?
  50. Help me to think of name for a tube amplifier
  51. All DHT Phono Stage
  52. How Set up Aria Mini 6P14?
  53. new build - abdellah SE KT88
  54. Sources for enclosures, parts, standoffs, tubing, etc?
  55. Duncan PSUII question
  56. Bench Phono Pre Layout
  57. Imd
  58. Line Level tube
  59. Wanting to start a DIY tube amp
  60. ARC VT100 driver adjustment
  61. Valve Amplifier
  62. SE OPT's in India
  63. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  64. What is a "gridless control" tube ?
  65. simple se ground to speaker wire?
  66. Polytone Mini-brute II
  67. New 6N6P linestage
  68. Split supply, arrangement of gain and phase splitter tubes
  69. New Hybrid Amp with multiple inputs: Little Singer H-30A
  70. Help with my Transformer - vibrating
  71. Ultralinear fender?
  72. Quick transformer question
  73. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  74. Oddwatt / Oddblock Builder's Thread
  75. Tube output stage for Buffalo Saber 32-bit DAC?
  76. Silvertone Multiplex Stereo Model No. 4092 Questions
  77. 6SJ7(6J8) + 6v6 (6P6S) SE
  78. Wavebourn Tower-III High-end hybrid amp
  79. Question - Closest Russian Analog of 12BH7A
  80. Help understanding the PowerDrive circuit anaylsis
  81. Aikido pre
  82. Fixed bias: Pots near supply or tubes?
  83. Oh, those 12AU7s again...
  84. Plitron LOW Power OPT...
  85. Has anyone used The Guiguang 300B?
  86. anyone have any el86 circuits laying around?
  87. ok, power supply question, 230v - 117v conversion
  88. Big lot of tubes purchased this morning
  89. Tamura HM-1
  90. Tube Amp Design Question...
  91. Cathode Bias questions
  92. Tube Hybrid Shunt Regulator ... will this even work?
  93. Forgive me TubeLab ... I have sinned
  94. Broskie regulator oscillates
  95. Yushang-Audio Classic 16.6
  96. Tube PreAmplifier Kit suggestions..
  97. Sourcing Chassis Access Panels
  98. Running 4 ohm speakers with my Simple SE
  99. YAQIN SD-32A Tube CD/HDCD Player
  100. Cavalli OCL Buffer
  101. wooohooo! Three Rowe AMI amps for $200NZD!
  102. Quick Volume pot question
  103. Basic choke quality/sonic benefit questions
  104. Tubelab SE buzzing noise from the speaker
  105. lighspeed attenuator w/Simple SE AMP
  106. Tube rectifiers for Dummies
  107. help on a SE 4 channel tube amp for auto?
  108. Audio Output Transformers
  109. K-502 Help
  110. High gain guitar preamp kits!
  111. First post, first project RH84
  112. Source for tube cages?
  113. Simple SE optimum layout for hum
  114. Audio Transformers - Help
  115. Gran Tenor
  116. Toroidal Output Tranformers
  117. Cathode Follower confusion
  118. Tube newbie problem
  119. Replacement of KT88's. No mods' necessary?
  120. Phase splitter types
  121. Yaqin VK-2100 mods
  122. Heptode oscillators
  123. tube amp repair in DFW area
  124. A novice scope user - measuring noise?
  125. Hickok 600A & KT88
  126. Multifilar winding
  127. Measuring Hi-Fi Amplifiers
  128. Help with 30A5 tube amp schematic
  129. simple se troubleshooting
  130. 6SN7 operating points input gain stage and concertina
  131. looking for pentodes for scope deflection
  132. Cary 845 schematics
  133. newbie simple SE issue
  134. Power Transformer 110/230V Windings Question
  135. OPT Voltage spike protection with zeners
  136. IRIS OTL info
  137. Precise 111 tube tester - missing tubes
  138. ping yves
  139. Filters
  140. 2X2 as amplifier rectifier
  141. SPMSU for heater supplies
  142. Shipping Tube Gear
  143. Amplifier squeel at zero volume
  144. mercury rectifier for electrostatic bias
  145. My little coupling-cap-test in a UL-70W-Amp
  146. Electra-Print 300BDRD
  147. K-502... upgrading the OPT's with Hammonds
  148. Tube eq or tone control - how to design it?
  149. Help, strange glowing in KT88
  150. Need opinions about this tube circuit
  151. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  152. Max current for Edcore GXSE10-8-2.5K
  153. And for the man who has everything....
  154. 1J6G recommended operating point?
  155. DHT bias and filament supply in one?
  156. Tubelab Simple SE Sound Quality
  157. 3d amp modelling (for solidworks)
  158. RSC Stereo Ten.
  159. Weird Bias on Simple SE
  160. Help - noisy phono stage
  161. 2A3 Max Grid Current Rating?
  162. Futterman style 6AS7 OTL with other tubes
  163. Low/Mid-Watt Amps
  164. Calling all builders of the Swenson/Pimm HV Reg
  165. AZ1 problem: broken metal part
  166. More Grunt from Aikido Needed to drive PL509's
  167. Correct OPT and other adjustments on old Bogen amp
  168. Ebl 21 Se Amplifier
  169. OT primary impedance calculation
  170. Akai M5?
  171. Identify the DHT
  172. Fountek Altitude 3500, any opinions?
  173. 31 tube in output
  174. dynaco system- volume remains
  175. Left channel BAD in stereo! HELP please! It's my first tube set
  176. OPT with power transfrormer core
  177. 300b dpa
  178. IV single stage inverting Feedback Amp
  179. TechTubes - The return of Blackburn
  180. simple se how to wire a auxiliary cap
  181. Tradeoffs in analog circuit design, and so on...
  182. Has anyone Received The new Techtubes yet?
  183. 6P3S-E in place of 6V6
  184. EL34, KT88, High Voltage?, VTL..
  185. 100W 6L6 amp sounds harsh at high Volume
  186. Hickok 533 / 600 settings for 6GM8 / ECC86
  187. Need help: amp blowing fuses
  188. Best voltage reference device for a cascode BJT CCS?
  189. Tube power amp noise problem
  190. tube oscillator help.
  191. Finally have some big chokes, how would you use them?
  192. Tube amplifier
  193. Mesa Boogie bass amp quiet
  194. 12AX7 heater filament resistance
  195. Choke input LC chain questions..Q?, minload?
  196. LED bias for 12ax7 oscillator
  197. Yaqin VK-2100 hybrid running 4 ohm speakers
  198. VR shunt regulator or RC filter
  199. Screen Mode Mesh Plate?
  200. EL34 simple push pull class B : why 100W ?
  201. Scored Some Bendix 5992
  202. Tube Substitutions Online ???
  203. Resistor pack for tube amp
  204. Tube Phono Preamp PCB Ebay? are these any good
  205. Testing an EL84 as a 6V6
  206. Low Voltage (~16-20V) Tube
  207. Basic Oscilloscope question
  208. Cathodyne Questions
  209. 6922 for a Noob
  210. Cathodyne Phase splitter simulation problem?
  211. How would you improve this EL84 SE circuit?
  212. Power transformer HT/B+ voltages
  213. Help with cathode follower circuit
  214. RH84 bias change whith different el84 is use
  215. No more power transformers?
  216. K-502 Filament supply (or K-12M)
  217. **LOL** Chinese surround sound amp identification
  218. Tubelab SE driver gain
  219. MOSFET for power drive for low powered 845
  220. Aikido line & phono Guru's advice for a newbie pls
  221. Need Tube kits of above 75W Single Ended Class A amp
  222. First Project: 300B SET Monoblocks
  223. Where do you get those cool layout diagrams?
  224. Simple SE grounding -- metal spacers/standoffs?
  225. My Simple SE via Akihabara
  226. Power-On Time Delay Circuit
  227. GM-70 Build Issues
  228. Blue glass inside tubes
  229. Ruby Tuesdays
  230. Wich valve to start?
  231. Tubes that have round/curved plates. . .
  232. Calculating current capacity?
  233. AKAI 1710W R2R, OPT Question?
  234. Ringed Tube Grills / Guards ?
  235. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  236. Please help identify this tube - Shuguang 6922?
  237. Dedicated 6.3v filament transformer 240v primary
  238. can someone check this thread please
  239. Amp refurbishing question.....
  240. Tube mounting position
  241. 6N6P - recommended operating point
  242. Interstage transformer questions
  243. Help identifying resistor value
  244. New Audio Note M10
  245. K501 vs K12M
  246. what are these (i hope cheap) resistors ?
  247. Potentiometer value for 6SL7 input
  248. PSU Designer II question
  249. Lost Thread-High VOltage Regulated Power Supply
  250. 6B4G schematic - opinions please!!

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