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  1. CRC Filter ?
  2. PCB edge connectors... what will they do to my sound?
  3. Tranny question
  4. Anyone here in contact with Pieter from Tribute?
  5. Fisher 500C with JJ 7591S - Optimum Bias Current?
  6. Power supply resistors power ratings
  7. Anyone tried this SE trafos?
  8. Adjustable B+ and Cathode Current linestage
  9. Possibility of Tube substitution trough MOSFETs
  10. G2 overvoltage ??
  11. Toroid transformer cover?
  12. Help me to think of name for a tube amplifier
  13. All DHT Phono Stage
  14. How Set up Aria Mini 6P14?
  15. new build - abdellah SE KT88
  16. Sources for enclosures, parts, standoffs, tubing, etc?
  17. Duncan PSUII question
  18. Bench Phono Pre Layout
  19. Imd
  20. Line Level tube
  21. Wanting to start a DIY tube amp
  22. ARC VT100 driver adjustment
  23. Valve Amplifier
  24. SE OPT's in India
  25. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  26. What is a "gridless control" tube ?
  27. Polytone Mini-brute II
  28. New 6N6P linestage
  29. Split supply, arrangement of gain and phase splitter tubes
  30. New Hybrid Amp with multiple inputs: Little Singer H-30A
  31. Help with my Transformer - vibrating
  32. Quick transformer question
  33. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  34. Oddwatt / Oddblock Builder's Thread
  35. Tube output stage for Buffalo Saber 32-bit DAC?
  36. Silvertone Multiplex Stereo Model No. 4092 Questions
  37. 6SJ7(6J8) + 6v6 (6P6S) SE
  38. Wavebourn Tower-III High-end hybrid amp
  39. Question - Closest Russian Analog of 12BH7A
  40. Help understanding the PowerDrive circuit anaylsis
  41. Aikido pre
  42. Fixed bias: Pots near supply or tubes?
  43. Oh, those 12AU7s again...
  44. Plitron LOW Power OPT...
  45. Has anyone used The Guiguang 300B?
  46. anyone have any el86 circuits laying around?
  47. ok, power supply question, 230v - 117v conversion
  48. Big lot of tubes purchased this morning
  49. Tamura HM-1
  50. Tube Amp Design Question...
  51. Cathode Bias questions
  52. Tube Hybrid Shunt Regulator ... will this even work?
  53. Broskie regulator oscillates
  54. Yushang-Audio Classic 16.6
  55. Tube PreAmplifier Kit suggestions..
  56. Sourcing Chassis Access Panels
  57. Cavalli OCL Buffer
  58. wooohooo! Three Rowe AMI amps for $200NZD!
  59. Quick Volume pot question
  60. Basic choke quality/sonic benefit questions
  61. Tube rectifiers for Dummies
  62. help on a SE 4 channel tube amp for auto?
  63. Audio Output Transformers
  64. K-502 Help
  65. First post, first project RH84
  66. Source for tube cages?
  67. Audio Transformers - Help
  68. Gran Tenor
  69. Toroidal Output Tranformers
  70. Cathode Follower confusion
  71. Tube newbie problem
  72. Replacement of KT88's. No mods' necessary?
  73. Phase splitter types
  74. Yaqin VK-2100 mods
  75. Heptode oscillators
  76. tube amp repair in DFW area
  77. A novice scope user - measuring noise?
  78. Multifilar winding
  79. Measuring Hi-Fi Amplifiers
  80. Help with 30A5 tube amp schematic
  81. 6SN7 operating points input gain stage and concertina
  82. looking for pentodes for scope deflection
  83. Cary 845 schematics
  84. Power Transformer 110/230V Windings Question
  85. OPT Voltage spike protection with zeners
  86. IRIS OTL info
  87. ping yves
  88. Filters
  89. 2X2 as amplifier rectifier
  90. SPMSU for heater supplies
  91. Shipping Tube Gear
  92. Amplifier squeel at zero volume
  93. mercury rectifier for electrostatic bias
  94. My little coupling-cap-test in a UL-70W-Amp
  95. Electra-Print 300BDRD
  96. K-502... upgrading the OPT's with Hammonds
  97. Tube eq or tone control - how to design it?
  98. Help, strange glowing in KT88
  99. Need opinions about this tube circuit
  100. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  101. Max current for Edcore GXSE10-8-2.5K
  102. And for the man who has everything....
  103. 1J6G recommended operating point?
  104. DHT bias and filament supply in one?
  105. 3d amp modelling (for solidworks)
  106. RSC Stereo Ten.
  107. Help - noisy phono stage
  108. 2A3 Max Grid Current Rating?
  109. Futterman style 6AS7 OTL with other tubes
  110. Low/Mid-Watt Amps
  111. Calling all builders of the Swenson/Pimm HV Reg
  112. AZ1 problem: broken metal part
  113. More Grunt from Aikido Needed to drive PL509's
  114. Correct OPT and other adjustments on old Bogen amp
  115. Ebl 21 Se Amplifier
  116. OT primary impedance calculation
  117. Akai M5?
  118. Identify the DHT
  119. Fountek Altitude 3500, any opinions?
  120. 31 tube in output
  121. dynaco system- volume remains
  122. Left channel BAD in stereo! HELP please! It's my first tube set
  123. OPT with power transfrormer core
  124. 300b dpa
  125. IV single stage inverting Feedback Amp
  126. TechTubes - The return of Blackburn
  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. Need help: amp blowing fuses
  133. Best voltage reference device for a cascode BJT CCS?
  134. Tube power amp noise problem
  135. tube oscillator help.
  136. Finally have some big chokes, how would you use them?
  137. Tube amplifier
  138. 12AX7 heater filament resistance
  139. Choke input LC chain questions..Q?, minload?
  140. LED bias for 12ax7 oscillator
  141. Yaqin VK-2100 hybrid running 4 ohm speakers
  142. VR shunt regulator or RC filter
  143. Screen Mode Mesh Plate?
  144. EL34 simple push pull class B : why 100W ?
  145. Scored Some Bendix 5992
  146. Tube Substitutions Online ???
  147. Tube Phono Preamp PCB Ebay? are these any good
  148. Testing an EL84 as a 6V6
  149. Low Voltage (~16-20V) Tube
  150. Cathodyne Questions
  151. 6922 for a Noob
  152. Cathodyne Phase splitter simulation problem?
  153. How would you improve this EL84 SE circuit?
  154. Power transformer HT/B+ voltages
  155. Help with cathode follower circuit
  156. RH84 bias change whith different el84 is use
  157. No more power transformers?
  158. K-502 Filament supply (or K-12M)
  159. **LOL** Chinese surround sound amp identification
  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. Power-On Time Delay Circuit
  166. GM-70 Build Issues
  167. Blue glass inside tubes
  168. Ruby Tuesdays
  169. Wich valve to start?
  170. Tubes that have round/curved plates. . .
  171. Calculating current capacity?
  172. AKAI 1710W R2R, OPT Question?
  173. Ringed Tube Grills / Guards ?
  174. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  175. Please help identify this tube - Shuguang 6922?
  176. Dedicated 6.3v filament transformer 240v primary
  177. can someone check this thread please
  178. Amp refurbishing question.....
  179. Tube mounting position
  180. 6N6P - recommended operating point
  181. Interstage transformer questions
  182. Help identifying resistor value
  183. New Audio Note M10
  184. K501 vs K12M
  185. what are these (i hope cheap) resistors ?
  186. Potentiometer value for 6SL7 input
  187. PSU Designer II question
  188. Lost Thread-High VOltage Regulated Power Supply
  189. 6B4G schematic - opinions please!!
  190. Plate current Question
  191. rh84 bias question.
  192. On/off LED wiring question
  193. Heater to Cathode max voltage specs, including signal swings?
  194. Any 9- pin rectifier tubes with separate cathodes?
  195. 6G-A4 anyone have a datasheet?
  196. Bias Protection Resistors in DC Coupled Amp
  197. EL84 push pull
  198. pcb printing companies
  199. Help! tube amp burnt?
  200. 43% UL connections
  201. Help with CATHODE resistor value on 6BM8 PP Amp
  202. SE EL34 schematic HELP: from two 6SL7's to One?
  203. no choke and transformers ratings
  204. Value of Resistors of EL34
  205. Power Transformer spec questions. Will it work or burn up?
  206. These Hong Kong amps have me bummed
  207. Looking for a cheap dual pentode
  208. Building a 12B4 Line Stage
  209. Speaker sounds blown...but isn't
  210. Static noise in K-16LS
  211. Scratchy clicky noise coming from homemade 6L6 tube amp
  212. Rowe AMI jukebox amp
  213. Does this power supply make any sense to you?
  214. Zener Diode Question
  215. 829B as LTP?
  216. Need a little help with Aikido 6n1p/6n6p
  217. Power switch location..
  218. Mini Millet (starving student) and iPod??
  219. valve preamp for quad 303
  220. Paging Wavebourn - article on Russian caps...
  221. I'm about to drive a stake thru the heart of my Aikido linestage
  222. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  223. Model 16LS Stereo Integrated Tube Amplifier
  224. hum on pre-amp when volume is turned up
  225. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  226. Interesting circuit, filter question.
  227. Choke Voltage ratings
  228. Major amp circuit redesign- need some expert advice
  229. Daft Hybrid Amp
  230. 6n18-v tube amp
  231. Old big/long plate 12AX7's & 12AT7's
  232. in progress
  233. A good tube amplifier power supply
  234. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  235. El34 Se
  236. Question on choke
  237. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  238. SET tube replacement
  239. VALVOLOZZO triode amp with toroids output trafo...help me
  240. Old amp kit making noise and its getting OLD.
  241. Another Tube pre query !
  242. do 6h30 glow at the top only
  243. canadian source for triad choke?
  244. Fork vs. Sleeve Terminal Octal Sockets.
  245. Step down grid choke vs. interstage transformer
  246. Who knows James 6123HS parameters? Or where to ask
  247. Advantage of a FET-BJT CCS vs BJT only
  248. Trouble choke loading tube in regulated supply
  249. Fixed Bias adjustment
  250. web resource for tube pricing?

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