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  1. ARC VT100 driver adjustment
  2. Valve Amplifier
  3. SE OPT's in India
  4. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  5. What is a "gridless control" tube ?
  6. simple se ground to speaker wire?
  7. Polytone Mini-brute II
  8. New 6N6P linestage
  9. Split supply, arrangement of gain and phase splitter tubes
  10. New Hybrid Amp with multiple inputs: Little Singer H-30A
  11. Help with my Transformer - vibrating
  12. Ultralinear fender?
  13. Quick transformer question
  14. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  15. Oddwatt / Oddblock Builder's Thread
  16. Tube output stage for Buffalo Saber 32-bit DAC?
  17. Silvertone Multiplex Stereo Model No. 4092 Questions
  18. 6SJ7(6J8) + 6v6 (6P6S) SE
  19. Wavebourn Tower-III High-end hybrid amp
  20. Question - Closest Russian Analog of 12BH7A
  21. Help understanding the PowerDrive circuit anaylsis
  22. Aikido pre
  23. Fixed bias: Pots near supply or tubes?
  24. Oh, those 12AU7s again...
  25. Plitron LOW Power OPT...
  26. Has anyone used The Guiguang 300B?
  27. anyone have any el86 circuits laying around?
  28. ok, power supply question, 230v - 117v conversion
  29. Big lot of tubes purchased this morning
  30. Tamura HM-1
  31. Tube Amp Design Question...
  32. Cathode Bias questions
  33. Tube Hybrid Shunt Regulator ... will this even work?
  34. Forgive me TubeLab ... I have sinned
  35. Broskie regulator oscillates
  36. Yushang-Audio Classic 16.6
  37. Tube PreAmplifier Kit suggestions..
  38. Sourcing Chassis Access Panels
  39. Running 4 ohm speakers with my Simple SE
  40. YAQIN SD-32A Tube CD/HDCD Player
  41. Cavalli OCL Buffer
  42. wooohooo! Three Rowe AMI amps for $200NZD!
  43. Quick Volume pot question
  44. Basic choke quality/sonic benefit questions
  45. Tubelab SE buzzing noise from the speaker
  46. lighspeed attenuator w/Simple SE AMP
  47. Tube rectifiers for Dummies
  48. help on a SE 4 channel tube amp for auto?
  49. Audio Output Transformers
  50. K-502 Help
  51. High gain guitar preamp kits!
  52. First post, first project RH84
  53. Source for tube cages?
  54. Simple SE optimum layout for hum
  55. Audio Transformers - Help
  56. Gran Tenor
  57. Toroidal Output Tranformers
  58. Cathode Follower confusion
  59. Tube newbie problem
  60. Replacement of KT88's. No mods' necessary?
  61. Phase splitter types
  62. Yaqin VK-2100 mods
  63. Heptode oscillators
  64. tube amp repair in DFW area
  65. A novice scope user - measuring noise?
  66. Hickok 600A & KT88
  67. Multifilar winding
  68. Measuring Hi-Fi Amplifiers
  69. Help with 30A5 tube amp schematic
  70. simple se troubleshooting
  71. 6SN7 operating points input gain stage and concertina
  72. looking for pentodes for scope deflection
  73. Cary 845 schematics
  74. newbie simple SE issue
  75. Power Transformer 110/230V Windings Question
  76. OPT Voltage spike protection with zeners
  77. IRIS OTL info
  78. Precise 111 tube tester - missing tubes
  79. ping yves
  80. Filters
  81. 2X2 as amplifier rectifier
  82. SPMSU for heater supplies
  83. Shipping Tube Gear
  84. Amplifier squeel at zero volume
  85. mercury rectifier for electrostatic bias
  86. My little coupling-cap-test in a UL-70W-Amp
  87. Electra-Print 300BDRD
  88. K-502... upgrading the OPT's with Hammonds
  89. Tube eq or tone control - how to design it?
  90. Help, strange glowing in KT88
  91. Need opinions about this tube circuit
  92. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  93. Max current for Edcore GXSE10-8-2.5K
  94. And for the man who has everything....
  95. 1J6G recommended operating point?
  96. DHT bias and filament supply in one?
  97. Tubelab Simple SE Sound Quality
  98. 3d amp modelling (for solidworks)
  99. RSC Stereo Ten.
  100. Weird Bias on Simple SE
  101. Help - noisy phono stage
  102. 2A3 Max Grid Current Rating?
  103. Futterman style 6AS7 OTL with other tubes
  104. Low/Mid-Watt Amps
  105. Calling all builders of the Swenson/Pimm HV Reg
  106. AZ1 problem: broken metal part
  107. More Grunt from Aikido Needed to drive PL509's
  108. Correct OPT and other adjustments on old Bogen amp
  109. Ebl 21 Se Amplifier
  110. OT primary impedance calculation
  111. Akai M5?
  112. Identify the DHT
  113. Fountek Altitude 3500, any opinions?
  114. 31 tube in output
  115. dynaco system- volume remains
  116. Left channel BAD in stereo! HELP please! It's my first tube set
  117. OPT with power transfrormer core
  118. 300b dpa
  119. IV single stage inverting Feedback Amp
  120. TechTubes - The return of Blackburn
  121. simple se how to wire a auxiliary cap
  122. Tradeoffs in analog circuit design, and so on...
  123. Has anyone Received The new Techtubes yet?
  124. 6P3S-E in place of 6V6
  125. EL34, KT88, High Voltage?, VTL..
  126. 100W 6L6 amp sounds harsh at high Volume
  127. Hickok 533 / 600 settings for 6GM8 / ECC86
  128. Need help: amp blowing fuses
  129. Best voltage reference device for a cascode BJT CCS?
  130. Tube power amp noise problem
  131. tube oscillator help.
  132. Finally have some big chokes, how would you use them?
  133. Tube amplifier
  134. Mesa Boogie bass amp quiet
  135. 12AX7 heater filament resistance
  136. Choke input LC chain questions..Q?, minload?
  137. LED bias for 12ax7 oscillator
  138. Yaqin VK-2100 hybrid running 4 ohm speakers
  139. VR shunt regulator or RC filter
  140. Screen Mode Mesh Plate?
  141. EL34 simple push pull class B : why 100W ?
  142. Scored Some Bendix 5992
  143. Tube Substitutions Online ???
  144. Resistor pack for tube amp
  145. Tube Phono Preamp PCB Ebay? are these any good
  146. Testing an EL84 as a 6V6
  147. Low Voltage (~16-20V) Tube
  148. Basic Oscilloscope question
  149. Cathodyne Questions
  150. 6922 for a Noob
  151. Cathodyne Phase splitter simulation problem?
  152. How would you improve this EL84 SE circuit?
  153. Power transformer HT/B+ voltages
  154. Help with cathode follower circuit
  155. RH84 bias change whith different el84 is use
  156. No more power transformers?
  157. K-502 Filament supply (or K-12M)
  158. **LOL** Chinese surround sound amp identification
  159. Tubelab SE driver gain
  160. MOSFET for power drive for low powered 845
  161. Aikido line & phono Guru's advice for a newbie pls
  162. Need Tube kits of above 75W Single Ended Class A amp
  163. First Project: 300B SET Monoblocks
  164. Where do you get those cool layout diagrams?
  165. Simple SE grounding -- metal spacers/standoffs?
  166. My Simple SE via Akihabara
  167. Power-On Time Delay Circuit
  168. GM-70 Build Issues
  169. Blue glass inside tubes
  170. Ruby Tuesdays
  171. Wich valve to start?
  172. Tubes that have round/curved plates. . .
  173. Calculating current capacity?
  174. AKAI 1710W R2R, OPT Question?
  175. Ringed Tube Grills / Guards ?
  176. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  177. Please help identify this tube - Shuguang 6922?
  178. Dedicated 6.3v filament transformer 240v primary
  179. can someone check this thread please
  180. Amp refurbishing question.....
  181. Tube mounting position
  182. 6N6P - recommended operating point
  183. Interstage transformer questions
  184. Help identifying resistor value
  185. New Audio Note M10
  186. K501 vs K12M
  187. what are these (i hope cheap) resistors ?
  188. Potentiometer value for 6SL7 input
  189. PSU Designer II question
  190. Lost Thread-High VOltage Regulated Power Supply
  191. 6B4G schematic - opinions please!!
  192. Plate current Question
  193. rh84 bias question.
  194. On/off LED wiring question
  195. Stabilized wood
  196. Heater to Cathode max voltage specs, including signal swings?
  197. Any 9- pin rectifier tubes with separate cathodes?
  198. Final checkout problems with Tubelab SE
  199. 6G-A4 anyone have a datasheet?
  200. Bias Protection Resistors in DC Coupled Amp
  201. EL84 push pull
  202. pcb printing companies
  203. Help! tube amp burnt?
  204. 43% UL connections
  205. Help with CATHODE resistor value on 6BM8 PP Amp
  206. SE EL34 schematic HELP: from two 6SL7's to One?
  207. no choke and transformers ratings
  208. Value of Resistors of EL34
  209. bass preamp redux
  210. Power Transformer spec questions. Will it work or burn up?
  211. These Hong Kong amps have me bummed
  212. Looking for a cheap dual pentode
  213. Adding panel meters to Simple SE?
  214. Building a 12B4 Line Stage
  215. Speaker sounds blown...but isn't
  216. Static noise in K-16LS
  217. Scratchy clicky noise coming from homemade 6L6 tube amp
  218. Rowe AMI jukebox amp
  219. Does this power supply make any sense to you?
  220. Zener Diode Question
  221. 829B as LTP?
  222. Need a little help with Aikido 6n1p/6n6p
  223. Power switch location..
  224. Mini Millet (starving student) and iPod??
  225. valve preamp for quad 303
  226. Paging Wavebourn - article on Russian caps...
  227. I'm about to drive a stake thru the heart of my Aikido linestage
  228. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  229. Model 16LS Stereo Integrated Tube Amplifier
  230. hum on pre-amp when volume is turned up
  231. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  232. Interesting circuit, filter question.
  233. Choke Voltage ratings
  234. Hole drills
  235. Major amp circuit redesign- need some expert advice
  236. Daft Hybrid Amp
  237. 6n18-v tube amp
  238. Old big/long plate 12AX7's & 12AT7's
  239. in progress
  240. JTM45 clone
  241. A good tube amplifier power supply
  242. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  243. El34 Se
  244. Question on choke
  245. Simple SE output transformer: James or Edcor?
  246. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  247. SET tube replacement
  248. Some kind of buffer/preamp for my SS guitar amp fx loop
  249. VALVOLOZZO triode amp with toroids output trafo...help me
  250. Old amp kit making noise and its getting OLD.

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