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  1. Lafayette PA 675 Schematic ?
  2. phono preamp?
  3. Input tube recommendations...
  4. blind test tube preamp free for all
  5. Estimate Miller of Triode Strapped Pentode
  6. Tube Care for Prolonged Life
  7. bias resistor to use for a PP 300B?
  8. 12AY7 preamp schematic
  9. visio shapes
  10. vt25 in pre amp
  11. Wire Wound Pontentiometers - resistors
  12. Sound City B120
  13. Single supply 6922 buffer with 2SK CCS
  14. Aikido and 30W Class AB power buffer?
  15. Simple Pentode driver for a 45 ?
  16. Sennheiser HD 650 Question
  17. ampeg svt 2 pro preamp problem
  18. Edcor specs?
  19. hook up wire
  20. 6X5, 2x 6SL7 & a 6v6GT....
  21. strange tube? E-8128
  22. Value of grid-leak resistor
  23. TubeTech Valves
  24. 1st build done.
  25. Tube socket does not fit tube
  26. 300B SET Bias Help
  27. This Connector for an Amp Umbilical?
  28. Chassis Grounding and rectifiers
  29. TechTube TM Blackburn status
  30. Protection of tubes/amp...
  31. 6sf5
  32. EF86 - Interstage transformer - EL84 PP AB
  33. Schadeode
  34. High-power amplifier using transmitting tubes
  35. Basic testing/meter question
  36. Mains voltage change for Sonic Frontiers SFS80 ?
  37. transformer unused secondary noobie question
  38. Acrosound High Power Williamson - HELP!!!!
  39. 300B Cathode Feedback + Cathode Bias
  40. "Budget" GM70 SET
  41. Chokes next to output transformers?
  42. Adding more power tubes and make a tube amp switching them?
  43. 1. time biasing...
  44. SE solution wanted
  45. tube rectifier
  46. Baldwin amp, yet another amp conversion project
  47. sorry, yet another newbie - what can I make with these???
  48. Design Help (load line) on a SE Mono Block Amp build
  49. Plate Choke SRPP…. What do think?
  50. Looking for a Fisher chassis 51 mono amp
  51. Majestic Transformers
  52. Inverted Mos HV soft start
  53. Strange S5 K-16LS oscilloscope readings
  54. Why don't pentodes require aligned grids?
  55. First design for a tube noob
  56. Newbie and ASL Wave 8 problems
  57. Evil Experiments - Hammond Paper in Oil Caps
  58. Now I know what this Tranny can do
  59. Pinnacle tubes??
  60. First Project.... and Hello
  61. VTL Integrator schematic
  62. Old transformators...
  63. 12AU7/12AT7/12AX7 preamp schmatic needed
  64. Booz preamp
  65. Mystery "The Fisher" console mono amp
  66. Cracks and hiss in tube guitar amp
  67. Voltage Doubler
  68. Gas Reference Tube (5651/85A1/etc) Internal Impedance
  69. Sakuma-San Pilgramage?
  70. Any HP 8903 audio analyzer owners?
  71. xL508/6KW6/17KW6
  72. 6C45 phono input only?
  73. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  74. Switch box using VR glow tubes
  75. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  76. TJ 845 Tubes
  77. Looking for a web tutorial on basic calculations
  78. Berman linestage- do I reference heaters or not?!
  79. calculating gain
  80. Simple EL84 amp...
  81. Tube Direct Box - Got design?
  82. Raphaelite Audio Transformers & Sino Tube Amplifier Kits - What's your experience ?
  83. S-5 Electronics K-16LS & 6V6 Substitution
  84. how to calculate current requirement
  85. Stancor Transformer Data Sheet Needed
  86. 6BL7 replecement
  87. Toroid PT question
  88. New SET Amp
  89. What do you guys think..
  90. Output Stage in MJ Question
  91. Input voltage on an integrated tube amp
  92. 6sf5 = 1/2 12ax7?
  93. Observations of amplifier sound
  94. Sovtek KT88
  95. 24 or 24a as driver in 2 stage..?
  96. Too high transformator voltages...
  97. This power supply ok?
  98. 300B valves
  99. Modulation transformer for a driver transformer?
  100. Is 6V DC too low for heater filament?
  101. mundorff 0.47 silver in oil
  102. need manual for heathkit sp2
  103. Interresting Quiz. Which tube is this?
  104. el84 burn in time ?
  105. Tube Amp Compensation Q
  106. Quad II Advice
  107. Bias problem- 1 Socket shows extremely low bias!
  108. ECC88 vs E88CC
  109. Finally, back to my Simple SE project
  110. can trafo laminations rest on chassis?
  111. Ping Poindexter - 6SN7 Moebius Linestage Question
  112. More information wanted on this Phase Splitter Circuit
  113. Converting tube tester to Mutual Conductance
  114. 6UA4-GTA Question
  115. oscilloscope turned guitar amp?
  116. LED cathode bias - how to pick LED?
  117. preamp question
  118. Hickok tube tester calibration help needed
  119. Watch this !
  120. any Welborne Labs Ultrapath owners ?
  121. McIntosh transformer turns ratio
  122. 12E1 & S11E12 as a KT88 substitution
  123. Dynaco ST-70 Triode Conversion Techniques
  124. Larry Moore power supply
  125. SE to Balanced tube preamp idea
  126. Help on Cascode DN2540 CCS
  127. Kt88 Pp
  128. What was the diy world like before the internet?
  129. Updated my website
  130. Marshall AVT 50 preamp gain/distortion increase
  131. Interstage question in 6ac5G design
  132. Using a powered sub with my tube amp
  133. 807pp suggestions and guidance please
  134. 2 stage IT coupled SE suggestions.?
  135. WE429A similar to 6V6?
  136. 6FQ7 in RH84
  137. Deluxe Reverb Re-Issue High Frequency Noise.
  138. What splitter for this design ?
  139. preamp kit?
  140. PP power supply design questions
  141. Hammond 1650P for KT88 PP - any experience?
  142. Gibson tube amp mod for JAZZ
  143. Cathode Bypass caps - how to choose?
  144. Marantz 9 output power switch
  145. Single ended KT88 question
  146. Anyone Have a Hickok 800A
  147. Please post your experience with 6C45 and 6H30
  148. Series-Shunt Regulator I need
  149. Hammond Gripe
  150. capacitors in series- what value balancing resistors?
  151. Substituting Pentode for Triode
  152. Pentode Driver Calculations
  153. DHT and speed issues
  154. Aikido vibration issue
  155. Modified Salas Mosfet Shunt Reg
  156. What if O.H. Schade had MOSFETs?
  157. Please Look at my circuit
  158. EL34 tube amp that needs work on
  159. question on differential stage
  160. Need help with my ST70, decrease in one channel
  161. Diff drive
  162. Stereo Aikido GND help
  163. Hashimoto HL-20K-6 Line Output Transformers
  164. What is the RIGHT way to calculate the Value of the cathode resistor?
  165. Kt88 Se
  166. ping Tom Schlangen
  167. Found An Old Transformer, Now What???
  168. Brook 22A restoration, HELP!!
  169. Optimal operating point for 7N7/6SN7?
  170. Loudness Control Calc - Help Please
  171. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  172. New 300B PP amp completed, phase shift questions
  173. One more PSU2 question
  174. 5U4 Darling power TX advice needed
  175. how to optimize this pentode PP (PP1 clone with S11E12)
  176. Can I change the input to a 6SL7?
  177. Outputtransformer to IGA 6550C ULPP
  178. Question on use PSUD2 software
  179. Please add to my confusion re stepup transformers
  180. filament power supply question
  181. Major Hum Problem
  182. FARMER LAMP amp
  183. Valve amp "master class"
  184. Toroid power transformers - are they a good idea?
  185. EL84 SE amplifier
  186. Gain Problems
  187. My SE KT-88 Build thread
  188. Rolling da(rling's) 6j4wa
  189. Phono pre amp
  190. Michealson Audio Da Vinci Preamp
  191. Acrosound PP 6550: Any Advice?
  192. PS idea: isolating transformer from load
  193. K-16LS Help Please
  194. 6N6P-I life-time
  195. Filament Xformer woes...
  196. The Use of 1:1 Input Transformers in Linestages
  197. 12hg7 vs 12hn7a
  198. Anyone familiar with VAC PA 90C1?
  199. Help restore an RCP 413 tube tester
  200. voltage reg make heat sink live. Bad idea?
  201. Audio Innovations series 800 reactivation + some mods
  202. Using 2 rectifiers off 1 power supply
  203. Tube power supply
  204. Improving low bass of a Scott 299c
  205. 1939 Radioshack Catalog online...Anyone have a time machine?
  206. VCCS filament supply for 813
  207. digital volume control
  208. Philips AD3800AM and AD9710AM clones
  209. MTP6N60E replacement
  210. Upgrading output transformers
  211. Cascode RIAA
  212. need a manual for selectron model 40 tube tester??
  213. Volume swinging problem
  214. How to use the almost Group buy Diyaudio CCS circuit
  215. Big voltage swing tube recommendation please
  216. Morgan Jones KT88 PP
  217. Mystery Tube Amplifier -- Help?????
  218. tube tester how can i tell if have match pair?
  219. Photo flash caps for the power supply?
  220. Finding bias point in PP fixed bias
  221. 6V6 Push Pull
  222. Transformer Mounting Braces
  223. Rozenblit 6as7 otl questions
  224. Genesis pre-amplifier schematic wanted
  225. 6H30PI/6922 Preamp Circuit
  226. PFB line amp
  227. 2A3C Mono plate: Shuguang Or Sovtek?
  228. Any kit reccomendation would be helpful
  229. Cleaning tubes...
  230. Anyone recognise these tubes...
  231. big ol' 26lb. output transformer...
  232. ECC88 Help
  233. European Triode Festival ETF08: still some places vacant!
  234. Dynaco MK IV Mystery
  235. 6as7/6080 Se Otl
  236. 6GW8 substitute tube 6BM8?
  237. Choke question
  238. Screen driven output stage
  239. Peavey Delta Blues Reverb Frustration
  240. 2a3 parallel driven 6sn7 schem
  241. WMD or Big Freakin Power Supply
  242. DIY My tube tester
  243. Help! May have dropped 12sn7 in place of 6sn7
  244. Got a bucketload of tubes, need identification
  245. Help from Allen Wright SuperReg owner
  246. Moscode 600
  247. Signal caps to keep on hand
  248. pin-compatible EF86 alternative?
  249. Capless Parafeed (with apologies to SY)
  250. T Eaton Viking schematics?

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