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  1. Tube socket for ECC88, drawing
  2. Richardson 5ar4
  3. Percy Audio / Still open? / Can't seem to get any response from them
  4. CRC Filter ?
  5. PCB edge connectors... what will they do to my sound?
  6. Tranny question
  7. Anyone here in contact with Pieter from Tribute?
  8. Fisher 500C with JJ 7591S - Optimum Bias Current?
  9. Power supply resistors power ratings
  10. Anyone tried this SE trafos?
  11. Adjustable B+ and Cathode Current linestage
  12. Possibility of Tube substitution trough MOSFETs
  13. G2 overvoltage ??
  14. Toroid transformer cover?
  15. Help me to think of name for a tube amplifier
  16. All DHT Phono Stage
  17. How Set up Aria Mini 6P14?
  18. new build - abdellah SE KT88
  19. Sources for enclosures, parts, standoffs, tubing, etc?
  20. Duncan PSUII question
  21. Bench Phono Pre Layout
  22. Imd
  23. Line Level tube
  24. Wanting to start a DIY tube amp
  25. ARC VT100 driver adjustment
  26. Valve Amplifier
  27. SE OPT's in India
  28. Arcing KT-88 and GLY513 ASC 600uF - Too Much of a Good Thing?
  29. What is a "gridless control" tube ?
  30. Polytone Mini-brute II
  31. New 6N6P linestage
  32. Split supply, arrangement of gain and phase splitter tubes
  33. New Hybrid Amp with multiple inputs: Little Singer H-30A
  34. Help with my Transformer - vibrating
  35. Quick transformer question
  36. Need for twin 5U4GB rectifiers in baldwin organ amplifier?
  37. Oddwatt / Oddblock Builder's Thread
  38. Tube output stage for Buffalo Saber 32-bit DAC?
  39. Silvertone Multiplex Stereo Model No. 4092 Questions
  40. 6SJ7(6J8) + 6v6 (6P6S) SE
  41. Wavebourn Tower-III High-end hybrid amp
  42. Question - Closest Russian Analog of 12BH7A
  43. Help understanding the PowerDrive circuit anaylsis
  44. Aikido pre
  45. Fixed bias: Pots near supply or tubes?
  46. Oh, those 12AU7s again...
  47. Plitron LOW Power OPT...
  48. Has anyone used The Guiguang 300B?
  49. anyone have any el86 circuits laying around?
  50. ok, power supply question, 230v - 117v conversion
  51. Big lot of tubes purchased this morning
  52. Tamura HM-1
  53. Tube Amp Design Question...
  54. Cathode Bias questions
  55. Tube Hybrid Shunt Regulator ... will this even work?
  56. Broskie regulator oscillates
  57. Yushang-Audio Classic 16.6
  58. Tube PreAmplifier Kit suggestions..
  59. Sourcing Chassis Access Panels
  60. Cavalli OCL Buffer
  61. wooohooo! Three Rowe AMI amps for $200NZD!
  62. Quick Volume pot question
  63. Basic choke quality/sonic benefit questions
  64. Tube rectifiers for Dummies
  65. help on a SE 4 channel tube amp for auto?
  66. Audio Output Transformers
  67. K-502 Help
  68. First post, first project RH84
  69. Source for tube cages?
  70. Audio Transformers - Help
  71. Gran Tenor
  72. Toroidal Output Tranformers
  73. Cathode Follower confusion
  74. Tube newbie problem
  75. Replacement of KT88's. No mods' necessary?
  76. Phase splitter types
  77. Yaqin VK-2100 mods
  78. Heptode oscillators
  79. tube amp repair in DFW area
  80. A novice scope user - measuring noise?
  81. Multifilar winding
  82. Measuring Hi-Fi Amplifiers
  83. Help with 30A5 tube amp schematic
  84. 6SN7 operating points input gain stage and concertina
  85. looking for pentodes for scope deflection
  86. Cary 845 schematics
  87. Power Transformer 110/230V Windings Question
  88. OPT Voltage spike protection with zeners
  89. IRIS OTL info
  90. ping yves
  91. Filters
  92. 2X2 as amplifier rectifier
  93. SPMSU for heater supplies
  94. Shipping Tube Gear
  95. Amplifier squeel at zero volume
  96. mercury rectifier for electrostatic bias
  97. My little coupling-cap-test in a UL-70W-Amp
  98. Electra-Print 300BDRD
  99. K-502... upgrading the OPT's with Hammonds
  100. Tube eq or tone control - how to design it?
  101. Help, strange glowing in KT88
  102. Need opinions about this tube circuit
  103. Custom designed transformer for Andrea Ciuffoli 6c33c OTL AMP....
  104. Max current for Edcore GXSE10-8-2.5K
  105. And for the man who has everything....
  106. 1J6G recommended operating point?
  107. DHT bias and filament supply in one?
  108. 3d amp modelling (for solidworks)
  109. RSC Stereo Ten.
  110. Help - noisy phono stage
  111. 2A3 Max Grid Current Rating?
  112. Futterman style 6AS7 OTL with other tubes
  113. Low/Mid-Watt Amps
  114. Calling all builders of the Swenson/Pimm HV Reg
  115. AZ1 problem: broken metal part
  116. More Grunt from Aikido Needed to drive PL509's
  117. Correct OPT and other adjustments on old Bogen amp
  118. Ebl 21 Se Amplifier
  119. OT primary impedance calculation
  120. Akai M5?
  121. Identify the DHT
  122. Fountek Altitude 3500, any opinions?
  123. 31 tube in output
  124. dynaco system- volume remains
  125. Left channel BAD in stereo! HELP please! It's my first tube set
  126. OPT with power transfrormer core
  127. 300b dpa
  128. IV single stage inverting Feedback Amp
  129. TechTubes - The return of Blackburn
  130. Tradeoffs in analog circuit design, and so on...
  131. Has anyone Received The new Techtubes yet?
  132. 6P3S-E in place of 6V6
  133. EL34, KT88, High Voltage?, VTL..
  134. 100W 6L6 amp sounds harsh at high Volume
  135. Need help: amp blowing fuses
  136. Best voltage reference device for a cascode BJT CCS?
  137. Tube power amp noise problem
  138. tube oscillator help.
  139. Finally have some big chokes, how would you use them?
  140. Tube amplifier
  141. 12AX7 heater filament resistance
  142. Choke input LC chain questions..Q?, minload?
  143. LED bias for 12ax7 oscillator
  144. Yaqin VK-2100 hybrid running 4 ohm speakers
  145. VR shunt regulator or RC filter
  146. Screen Mode Mesh Plate?
  147. EL34 simple push pull class B : why 100W ?
  148. Scored Some Bendix 5992
  149. Tube Substitutions Online ???
  150. Tube Phono Preamp PCB Ebay? are these any good
  151. Testing an EL84 as a 6V6
  152. Low Voltage (~16-20V) Tube
  153. Cathodyne Questions
  154. 6922 for a Noob
  155. Cathodyne Phase splitter simulation problem?
  156. How would you improve this EL84 SE circuit?
  157. Power transformer HT/B+ voltages
  158. Help with cathode follower circuit
  159. RH84 bias change whith different el84 is use
  160. No more power transformers?
  161. K-502 Filament supply (or K-12M)
  162. **LOL** Chinese surround sound amp identification
  163. MOSFET for power drive for low powered 845
  164. Aikido line & phono Guru's advice for a newbie pls
  165. Need Tube kits of above 75W Single Ended Class A amp
  166. First Project: 300B SET Monoblocks
  167. Where do you get those cool layout diagrams?
  168. Power-On Time Delay Circuit
  169. GM-70 Build Issues
  170. Blue glass inside tubes
  171. Ruby Tuesdays
  172. Wich valve to start?
  173. Tubes that have round/curved plates. . .
  174. Calculating current capacity?
  175. AKAI 1710W R2R, OPT Question?
  176. Ringed Tube Grills / Guards ?
  177. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  178. Please help identify this tube - Shuguang 6922?
  179. Dedicated 6.3v filament transformer 240v primary
  180. can someone check this thread please
  181. Amp refurbishing question.....
  182. Tube mounting position
  183. 6N6P - recommended operating point
  184. Interstage transformer questions
  185. Help identifying resistor value
  186. New Audio Note M10
  187. K501 vs K12M
  188. what are these (i hope cheap) resistors ?
  189. Potentiometer value for 6SL7 input
  190. PSU Designer II question
  191. Lost Thread-High VOltage Regulated Power Supply
  192. 6B4G schematic - opinions please!!
  193. Plate current Question
  194. rh84 bias question.
  195. On/off LED wiring question
  196. Heater to Cathode max voltage specs, including signal swings?
  197. Any 9- pin rectifier tubes with separate cathodes?
  198. 6G-A4 anyone have a datasheet?
  199. Bias Protection Resistors in DC Coupled Amp
  200. EL84 push pull
  201. pcb printing companies
  202. Help! tube amp burnt?
  203. 43% UL connections
  204. Help with CATHODE resistor value on 6BM8 PP Amp
  205. SE EL34 schematic HELP: from two 6SL7's to One?
  206. no choke and transformers ratings
  207. Value of Resistors of EL34
  208. Power Transformer spec questions. Will it work or burn up?
  209. These Hong Kong amps have me bummed
  210. Looking for a cheap dual pentode
  211. Building a 12B4 Line Stage
  212. Speaker sounds blown...but isn't
  213. Static noise in K-16LS
  214. Scratchy clicky noise coming from homemade 6L6 tube amp
  215. Rowe AMI jukebox amp
  216. Does this power supply make any sense to you?
  217. Zener Diode Question
  218. 829B as LTP?
  219. Need a little help with Aikido 6n1p/6n6p
  220. Power switch location..
  221. Mini Millet (starving student) and iPod??
  222. valve preamp for quad 303
  223. Paging Wavebourn - article on Russian caps...
  224. I'm about to drive a stake thru the heart of my Aikido linestage
  225. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  226. Model 16LS Stereo Integrated Tube Amplifier
  227. hum on pre-amp when volume is turned up
  228. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  229. Interesting circuit, filter question.
  230. Choke Voltage ratings
  231. Major amp circuit redesign- need some expert advice
  232. Daft Hybrid Amp
  233. 6n18-v tube amp
  234. Old big/long plate 12AX7's & 12AT7's
  235. in progress
  236. A good tube amplifier power supply
  237. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  238. El34 Se
  239. Question on choke
  240. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  241. SET tube replacement
  242. VALVOLOZZO triode amp with toroids output trafo...help me
  243. Old amp kit making noise and its getting OLD.
  244. Another Tube pre query !
  245. do 6h30 glow at the top only
  246. canadian source for triad choke?
  247. Fork vs. Sleeve Terminal Octal Sockets.
  248. Step down grid choke vs. interstage transformer
  249. Who knows James 6123HS parameters? Or where to ask
  250. Advantage of a FET-BJT CCS vs BJT only

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