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  1. Duncan PSUII question
  2. Bench Phono Pre Layout
  3. Imd
  4. Line Level tube
  5. Wanting to start a DIY tube amp
  6. ARC VT100 driver adjustment
  7. Valve Amplifier
  8. SE OPT's in India
  9. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  10. What is a "gridless control" tube ?
  11. simple se ground to speaker wire?
  12. Polytone Mini-brute II
  13. New 6N6P linestage
  14. Split supply, arrangement of gain and phase splitter tubes
  15. New Hybrid Amp with multiple inputs: Little Singer H-30A
  16. Help with my Transformer - vibrating
  17. Ultralinear fender?
  18. Quick transformer question
  19. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  20. Oddwatt / Oddblock Builder's Thread
  21. Tube output stage for Buffalo Saber 32-bit DAC?
  22. Silvertone Multiplex Stereo Model No. 4092 Questions
  23. 6SJ7(6J8) + 6v6 (6P6S) SE
  24. Wavebourn Tower-III High-end hybrid amp
  25. Question - Closest Russian Analog of 12BH7A
  26. Help understanding the PowerDrive circuit anaylsis
  27. Aikido pre
  28. Fixed bias: Pots near supply or tubes?
  29. Oh, those 12AU7s again...
  30. Plitron LOW Power OPT...
  31. Has anyone used The Guiguang 300B?
  32. anyone have any el86 circuits laying around?
  33. ok, power supply question, 230v - 117v conversion
  34. Big lot of tubes purchased this morning
  35. Tamura HM-1
  36. Tube Amp Design Question...
  37. Cathode Bias questions
  38. Tube Hybrid Shunt Regulator ... will this even work?
  39. Forgive me TubeLab ... I have sinned
  40. Broskie regulator oscillates
  41. Yushang-Audio Classic 16.6
  42. Tube PreAmplifier Kit suggestions..
  43. Sourcing Chassis Access Panels
  44. Running 4 ohm speakers with my Simple SE
  45. YAQIN SD-32A Tube CD/HDCD Player
  46. Cavalli OCL Buffer
  47. wooohooo! Three Rowe AMI amps for $200NZD!
  48. Quick Volume pot question
  49. Basic choke quality/sonic benefit questions
  50. Tubelab SE buzzing noise from the speaker
  51. lighspeed attenuator w/Simple SE AMP
  52. Tube rectifiers for Dummies
  53. help on a SE 4 channel tube amp for auto?
  54. Audio Output Transformers
  55. K-502 Help
  56. High gain guitar preamp kits!
  57. First post, first project RH84
  58. Source for tube cages?
  59. Simple SE optimum layout for hum
  60. Audio Transformers - Help
  61. Gran Tenor
  62. Toroidal Output Tranformers
  63. Cathode Follower confusion
  64. Tube newbie problem
  65. Replacement of KT88's. No mods' necessary?
  66. Phase splitter types
  67. Yaqin VK-2100 mods
  68. Heptode oscillators
  69. tube amp repair in DFW area
  70. A novice scope user - measuring noise?
  71. Hickok 600A & KT88
  72. Multifilar winding
  73. Measuring Hi-Fi Amplifiers
  74. Help with 30A5 tube amp schematic
  75. simple se troubleshooting
  76. 6SN7 operating points input gain stage and concertina
  77. looking for pentodes for scope deflection
  78. Cary 845 schematics
  79. newbie simple SE issue
  80. Power Transformer 110/230V Windings Question
  81. OPT Voltage spike protection with zeners
  82. IRIS OTL info
  83. Precise 111 tube tester - missing tubes
  84. ping yves
  85. Filters
  86. 2X2 as amplifier rectifier
  87. SPMSU for heater supplies
  88. Shipping Tube Gear
  89. Amplifier squeel at zero volume
  90. mercury rectifier for electrostatic bias
  91. My little coupling-cap-test in a UL-70W-Amp
  92. Electra-Print 300BDRD
  93. K-502... upgrading the OPT's with Hammonds
  94. Tube eq or tone control - how to design it?
  95. Help, strange glowing in KT88
  96. Need opinions about this tube circuit
  97. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  98. Max current for Edcore GXSE10-8-2.5K
  99. And for the man who has everything....
  100. 1J6G recommended operating point?
  101. DHT bias and filament supply in one?
  102. Tubelab Simple SE Sound Quality
  103. 3d amp modelling (for solidworks)
  104. RSC Stereo Ten.
  105. Weird Bias on Simple SE
  106. Help - noisy phono stage
  107. 2A3 Max Grid Current Rating?
  108. Futterman style 6AS7 OTL with other tubes
  109. Low/Mid-Watt Amps
  110. Calling all builders of the Swenson/Pimm HV Reg
  111. AZ1 problem: broken metal part
  112. More Grunt from Aikido Needed to drive PL509's
  113. Correct OPT and other adjustments on old Bogen amp
  114. Ebl 21 Se Amplifier
  115. OT primary impedance calculation
  116. Akai M5?
  117. Identify the DHT
  118. Fountek Altitude 3500, any opinions?
  119. 31 tube in output
  120. dynaco system- volume remains
  121. Left channel BAD in stereo! HELP please! It's my first tube set
  122. OPT with power transfrormer core
  123. 300b dpa
  124. IV single stage inverting Feedback Amp
  125. TechTubes - The return of Blackburn
  126. simple se how to wire a auxiliary cap
  127. Tradeoffs in analog circuit design, and so on...
  128. Has anyone Received The new Techtubes yet?
  129. 6P3S-E in place of 6V6
  130. EL34, KT88, High Voltage?, VTL..
  131. 100W 6L6 amp sounds harsh at high Volume
  132. Hickok 533 / 600 settings for 6GM8 / ECC86
  133. Need help: amp blowing fuses
  134. Best voltage reference device for a cascode BJT CCS?
  135. Tube power amp noise problem
  136. tube oscillator help.
  137. Finally have some big chokes, how would you use them?
  138. Tube amplifier
  139. Mesa Boogie bass amp quiet
  140. 12AX7 heater filament resistance
  141. Choke input LC chain questions..Q?, minload?
  142. LED bias for 12ax7 oscillator
  143. Yaqin VK-2100 hybrid running 4 ohm speakers
  144. VR shunt regulator or RC filter
  145. Screen Mode Mesh Plate?
  146. EL34 simple push pull class B : why 100W ?
  147. Scored Some Bendix 5992
  148. Tube Substitutions Online ???
  149. Resistor pack for tube amp
  150. Tube Phono Preamp PCB Ebay? are these any good
  151. Testing an EL84 as a 6V6
  152. Low Voltage (~16-20V) Tube
  153. Basic Oscilloscope question
  154. Cathodyne Questions
  155. 6922 for a Noob
  156. Cathodyne Phase splitter simulation problem?
  157. How would you improve this EL84 SE circuit?
  158. Power transformer HT/B+ voltages
  159. Help with cathode follower circuit
  160. RH84 bias change whith different el84 is use
  161. No more power transformers?
  162. K-502 Filament supply (or K-12M)
  163. **LOL** Chinese surround sound amp identification
  164. Tubelab SE driver gain
  165. MOSFET for power drive for low powered 845
  166. Aikido line & phono Guru's advice for a newbie pls
  167. Need Tube kits of above 75W Single Ended Class A amp
  168. First Project: 300B SET Monoblocks
  169. Where do you get those cool layout diagrams?
  170. Simple SE grounding -- metal spacers/standoffs?
  171. My Simple SE via Akihabara
  172. Power-On Time Delay Circuit
  173. GM-70 Build Issues
  174. Blue glass inside tubes
  175. Ruby Tuesdays
  176. Wich valve to start?
  177. Tubes that have round/curved plates. . .
  178. Calculating current capacity?
  179. AKAI 1710W R2R, OPT Question?
  180. Ringed Tube Grills / Guards ?
  181. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  182. Please help identify this tube - Shuguang 6922?
  183. Dedicated 6.3v filament transformer 240v primary
  184. can someone check this thread please
  185. Amp refurbishing question.....
  186. Tube mounting position
  187. 6N6P - recommended operating point
  188. Interstage transformer questions
  189. Help identifying resistor value
  190. New Audio Note M10
  191. K501 vs K12M
  192. what are these (i hope cheap) resistors ?
  193. Potentiometer value for 6SL7 input
  194. PSU Designer II question
  195. Lost Thread-High VOltage Regulated Power Supply
  196. 6B4G schematic - opinions please!!
  197. Plate current Question
  198. rh84 bias question.
  199. On/off LED wiring question
  200. Stabilized wood
  201. Heater to Cathode max voltage specs, including signal swings?
  202. Any 9- pin rectifier tubes with separate cathodes?
  203. Final checkout problems with Tubelab SE
  204. 6G-A4 anyone have a datasheet?
  205. Bias Protection Resistors in DC Coupled Amp
  206. EL84 push pull
  207. pcb printing companies
  208. Help! tube amp burnt?
  209. 43% UL connections
  210. Help with CATHODE resistor value on 6BM8 PP Amp
  211. SE EL34 schematic HELP: from two 6SL7's to One?
  212. no choke and transformers ratings
  213. Value of Resistors of EL34
  214. bass preamp redux
  215. Power Transformer spec questions. Will it work or burn up?
  216. These Hong Kong amps have me bummed
  217. Looking for a cheap dual pentode
  218. Adding panel meters to Simple SE?
  219. Building a 12B4 Line Stage
  220. Speaker sounds blown...but isn't
  221. Static noise in K-16LS
  222. Scratchy clicky noise coming from homemade 6L6 tube amp
  223. Rowe AMI jukebox amp
  224. Does this power supply make any sense to you?
  225. Zener Diode Question
  226. 829B as LTP?
  227. Need a little help with Aikido 6n1p/6n6p
  228. Power switch location..
  229. Mini Millet (starving student) and iPod??
  230. valve preamp for quad 303
  231. Paging Wavebourn - article on Russian caps...
  232. I'm about to drive a stake thru the heart of my Aikido linestage
  233. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  234. Model 16LS Stereo Integrated Tube Amplifier
  235. hum on pre-amp when volume is turned up
  236. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  237. Interesting circuit, filter question.
  238. Choke Voltage ratings
  239. Hole drills
  240. Major amp circuit redesign- need some expert advice
  241. Daft Hybrid Amp
  242. 6n18-v tube amp
  243. Old big/long plate 12AX7's & 12AT7's
  244. in progress
  245. JTM45 clone
  246. A good tube amplifier power supply
  247. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  248. El34 Se
  249. Question on choke
  250. Simple SE output transformer: James or Edcor?

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