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  1. Counterpoint SA-12 outputs 2SK134/2SJ49 work??
  2. Tube Amps left outdoors 24/7
  3. The beast OTL
  4. Input transformer: floating input = distortion
  5. Altmann's Split Feedback concept
  6. preamp for a JE LABS 2A3DX amp
  7. Phase flip needed -Interstage Transformer?
  8. Can your amp do this?
  9. AES out of 1625?
  10. Any info on Haltron 6BL8 tubes?
  11. Need Schematic for 12 Volt Tube Buffer
  12. Input impedance for Simple SE?
  13. SR-101 Pioneer Spring Reverb
  14. Basic Transformer Question - how do I know build possibilities?
  15. Source for 2.5VCT 5A filament transformers
  16. Nichicon VR VZ or GU
  17. Missing 6.3V CT/'Cockeyed Bridge' problem
  18. Best plate voltage for 6dj8 at +-6ma
  19. Max supply voltage for small DHT's
  20. Operating Temperature of KT88?
  21. First Tube Amp
  22. earthing advice on a US amp
  23. distortion at low volume
  24. interstage transformer cheating?
  25. PP EL34 or 6L6 circuits?
  26. Rectifier Capacator (voltage adjust)
  27. Passive RIAA and cap variation
  28. 6T9 push pull with Cathode Coupled input
  29. mixed bias
  30. Need help: tube DAC and Phono pre-amp
  31. Feedback equation
  32. Lafayette PA 675 Schematic ?
  33. phono preamp?
  34. Input tube recommendations...
  35. blind test tube preamp free for all
  36. Estimate Miller of Triode Strapped Pentode
  37. Tube Care for Prolonged Life
  38. bias resistor to use for a PP 300B?
  39. 12AY7 preamp schematic
  40. visio shapes
  41. vt25 in pre amp
  42. Wire Wound Pontentiometers - resistors
  43. Sound City B120
  44. Single supply 6922 buffer with 2SK CCS
  45. Aikido and 30W Class AB power buffer?
  46. Simple Pentode driver for a 45 ?
  47. Sennheiser HD 650 Question
  48. Edcor specs?
  49. hook up wire
  50. 6X5, 2x 6SL7 & a 6v6GT....
  51. strange tube? E-8128
  52. Value of grid-leak resistor
  53. TubeTech Valves
  54. 1st build done.
  55. Tube socket does not fit tube
  56. 300B SET Bias Help
  57. This Connector for an Amp Umbilical?
  58. Chassis Grounding and rectifiers
  59. TechTube TM Blackburn status
  60. Protection of tubes/amp...
  61. 6sf5
  62. EF86 - Interstage transformer - EL84 PP AB
  63. Schadeode
  64. High-power amplifier using transmitting tubes
  65. Basic testing/meter question
  66. Mains voltage change for Sonic Frontiers SFS80 ?
  67. transformer unused secondary noobie question
  68. Acrosound High Power Williamson - HELP!!!!
  69. 300B Cathode Feedback + Cathode Bias
  70. "Budget" GM70 SET
  71. Chokes next to output transformers?
  72. Adding more power tubes and make a tube amp switching them?
  73. 1. time biasing...
  74. SE solution wanted
  75. tube rectifier
  76. Baldwin amp, yet another amp conversion project
  77. sorry, yet another newbie - what can I make with these???
  78. Design Help (load line) on a SE Mono Block Amp build
  79. Plate Choke SRPP…. What do think?
  80. Looking for a Fisher chassis 51 mono amp
  81. Majestic Transformers
  82. Inverted Mos HV soft start
  83. Strange S5 K-16LS oscilloscope readings
  84. Why don't pentodes require aligned grids?
  85. First design for a tube noob
  86. Newbie and ASL Wave 8 problems
  87. Now I know what this Tranny can do
  88. Pinnacle tubes??
  89. First Project.... and Hello
  90. VTL Integrator schematic
  91. Old transformators...
  92. 12AU7/12AT7/12AX7 preamp schmatic needed
  93. Booz preamp
  94. Mystery "The Fisher" console mono amp
  95. Voltage Doubler
  96. Gas Reference Tube (5651/85A1/etc) Internal Impedance
  97. Sakuma-San Pilgramage?
  98. Any HP 8903 audio analyzer owners?
  99. xL508/6KW6/17KW6
  100. 6C45 phono input only?
  101. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  102. Switch box using VR glow tubes
  103. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  104. TJ 845 Tubes
  105. Looking for a web tutorial on basic calculations
  106. Berman linestage- do I reference heaters or not?!
  107. calculating gain
  108. Simple EL84 amp...
  109. Tube Direct Box - Got design?
  110. Raphaelite Audio Transformers & Sino Tube Amplifier Kits - What's your experience ?
  111. S-5 Electronics K-16LS & 6V6 Substitution
  112. how to calculate current requirement
  113. Stancor Transformer Data Sheet Needed
  114. 6BL7 replecement
  115. Toroid PT question
  116. New SET Amp
  117. What do you guys think..
  118. Output Stage in MJ Question
  119. Input voltage on an integrated tube amp
  120. 6sf5 = 1/2 12ax7?
  121. Observations of amplifier sound
  122. Sovtek KT88
  123. 24 or 24a as driver in 2 stage..?
  124. Too high transformator voltages...
  125. This power supply ok?
  126. 300B valves
  127. Modulation transformer for a driver transformer?
  128. Is 6V DC too low for heater filament?
  129. mundorff 0.47 silver in oil
  130. need manual for heathkit sp2
  131. Interresting Quiz. Which tube is this?
  132. el84 burn in time ?
  133. Tube Amp Compensation Q
  134. Quad II Advice
  135. Bias problem- 1 Socket shows extremely low bias!
  136. ECC88 vs E88CC
  137. Finally, back to my Simple SE project
  138. can trafo laminations rest on chassis?
  139. Ping Poindexter - 6SN7 Moebius Linestage Question
  140. More information wanted on this Phase Splitter Circuit
  141. Converting tube tester to Mutual Conductance
  142. 6UA4-GTA Question
  143. LED cathode bias - how to pick LED?
  144. preamp question
  145. Hickok tube tester calibration help needed
  146. Watch this !
  147. any Welborne Labs Ultrapath owners ?
  148. McIntosh transformer turns ratio
  149. 12E1 & S11E12 as a KT88 substitution
  150. Dynaco ST-70 Triode Conversion Techniques
  151. Larry Moore power supply
  152. SE to Balanced tube preamp idea
  153. Help on Cascode DN2540 CCS
  154. Kt88 Pp
  155. What was the diy world like before the internet?
  156. Updated my website
  157. Interstage question in 6ac5G design
  158. Using a powered sub with my tube amp
  159. 807pp suggestions and guidance please
  160. 2 stage IT coupled SE suggestions.?
  161. WE429A similar to 6V6?
  162. 6FQ7 in RH84
  163. What splitter for this design ?
  164. preamp kit?
  165. PP power supply design questions
  166. Hammond 1650P for KT88 PP - any experience?
  167. Cathode Bypass caps - how to choose?
  168. Marantz 9 output power switch
  169. Single ended KT88 question
  170. Anyone Have a Hickok 800A
  171. Please post your experience with 6C45 and 6H30
  172. Series-Shunt Regulator I need
  173. Hammond Gripe
  174. capacitors in series- what value balancing resistors?
  175. Substituting Pentode for Triode
  176. Pentode Driver Calculations
  177. DHT and speed issues
  178. Aikido vibration issue
  179. Modified Salas Mosfet Shunt Reg
  180. What if O.H. Schade had MOSFETs?
  181. Please Look at my circuit
  182. EL34 tube amp that needs work on
  183. question on differential stage
  184. Need help with my ST70, decrease in one channel
  185. Diff drive
  186. Stereo Aikido GND help
  187. Hashimoto HL-20K-6 Line Output Transformers
  188. What is the RIGHT way to calculate the Value of the cathode resistor?
  189. Kt88 Se
  190. ping Tom Schlangen
  191. Found An Old Transformer, Now What???
  192. Brook 22A restoration, HELP!!
  193. Optimal operating point for 7N7/6SN7?
  194. Loudness Control Calc - Help Please
  195. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  196. New 300B PP amp completed, phase shift questions
  197. One more PSU2 question
  198. 5U4 Darling power TX advice needed
  199. how to optimize this pentode PP (PP1 clone with S11E12)
  200. Can I change the input to a 6SL7?
  201. Outputtransformer to IGA 6550C ULPP
  202. Question on use PSUD2 software
  203. Please add to my confusion re stepup transformers
  204. filament power supply question
  205. Major Hum Problem
  206. FARMER LAMP amp
  207. Valve amp "master class"
  208. Toroid power transformers - are they a good idea?
  209. EL84 SE amplifier
  210. Gain Problems
  211. My SE KT-88 Build thread
  212. Rolling da(rling's) 6j4wa
  213. Phono pre amp
  214. Michealson Audio Da Vinci Preamp
  215. Acrosound PP 6550: Any Advice?
  216. PS idea: isolating transformer from load
  217. K-16LS Help Please
  218. 6N6P-I life-time
  219. Filament Xformer woes...
  220. The Use of 1:1 Input Transformers in Linestages
  221. 12hg7 vs 12hn7a
  222. Anyone familiar with VAC PA 90C1?
  223. Help restore an RCP 413 tube tester
  224. voltage reg make heat sink live. Bad idea?
  225. Audio Innovations series 800 reactivation + some mods
  226. Using 2 rectifiers off 1 power supply
  227. Tube power supply
  228. Improving low bass of a Scott 299c
  229. 1939 Radioshack Catalog online...Anyone have a time machine?
  230. VCCS filament supply for 813
  231. digital volume control
  232. Philips AD3800AM and AD9710AM clones
  233. MTP6N60E replacement
  234. Upgrading output transformers
  235. Cascode RIAA
  236. need a manual for selectron model 40 tube tester??
  237. Volume swinging problem
  238. How to use the almost Group buy Diyaudio CCS circuit
  239. Big voltage swing tube recommendation please
  240. Morgan Jones KT88 PP
  241. Mystery Tube Amplifier -- Help?????
  242. tube tester how can i tell if have match pair?
  243. Finding bias point in PP fixed bias
  244. 6V6 Push Pull
  245. Transformer Mounting Braces
  246. Rozenblit 6as7 otl questions
  247. Genesis pre-amplifier schematic wanted
  248. 6H30PI/6922 Preamp Circuit
  249. PFB line amp
  250. 2A3C Mono plate: Shuguang Or Sovtek?

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