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  1. need suggestion about MC pre-pre
  2. New gain stage .. Opinions???
  3. Using SS to augment < 100Hz?
  4. A help with an soviet transformer.
  5. I thought that I had seen everything
  6. Triatic PP-amp with 6p14p
  7. Single 6N6P stereo pre-amp
  8. high frequency oscillation and decoupling question
  9. Long tailed pair schematic questions
  10. CCS Kit options
  11. 13e1
  12. Rogers Tube Amp
  13. Pair of McIntosh MC-60 on Dallas Craigslist
  14. Lundahl LL1517. What is it good for?
  15. Edcor OPT Voltage Rating?
  16. Which Tube to Start with?
  17. Basic Transformer hookup wiring
  18. Beta followers, biasing.
  19. 6W 2xEL519 Half-hybrid Class-A OTL
  20. Can a Class AB PP amp be said to be operating in Class A at low signal levels?
  21. Wiring / Layout question
  22. Yaqin MC10K
  23. help me lower the gain of this preamp pls
  24. How to wiring the transformer
  25. "universal" P-P driver board
  26. series or parallel?
  27. Question about Cathode bias in this Magnavox amp. . .
  28. GK71 B+ turn on delay
  29. Paralleling Triodes in a 6SN7GT
  30. 6C33C-B. PP or SE ?
  31. 6550 Triode B+
  32. Aikido Phono Pre.....any good???
  33. Tube Preamp L&amp;R Channel different current draw
  34. amp is dead!
  35. What you think about Ayon Audio Spark SE 6C33 tube 22 W
  36. Running stereo through a single tube with dual triodes?
  37. Looking for 6AQ5 audio preamp schematic!
  38. Quad KT88 oscillation problem
  39. El86 driving high beta bipolar power tr
  40. Installed 12&quot; Speaker in Pro Jr---Now What??
  41. How do I design a pentode constant current source plate load?
  42. Socket for 6AQ5
  43. new 845? Who produces it?
  44. Looking for a 45 SE Schematic
  45. Counterpoint SA-12 outputs 2SK134/2SJ49 work??
  46. Tube Amps left outdoors 24/7
  47. The beast OTL
  48. Input transformer: floating input = distortion
  49. Altmann's Split Feedback concept
  50. preamp for a JE LABS 2A3DX amp
  51. Phase flip needed -Interstage Transformer?
  52. Can your amp do this?
  53. AES out of 1625?
  54. Any info on Haltron 6BL8 tubes?
  55. Need Schematic for 12 Volt Tube Buffer
  56. SR-101 Pioneer Spring Reverb
  57. Basic Transformer Question - how do I know build possibilities?
  58. Source for 2.5VCT 5A filament transformers
  59. Nichicon VR VZ or GU
  60. Missing 6.3V CT/'Cockeyed Bridge' problem
  61. Best plate voltage for 6dj8 at +-6ma
  62. Max supply voltage for small DHT's
  63. Operating Temperature of KT88?
  64. First Tube Amp
  65. earthing advice on a US amp
  66. distortion at low volume
  67. interstage transformer cheating?
  68. PP EL34 or 6L6 circuits?
  69. Rectifier Capacator (voltage adjust)
  70. Passive RIAA and cap variation
  71. 6T9 push pull with Cathode Coupled input
  72. mixed bias
  73. Need help: tube DAC and Phono pre-amp
  74. Feedback equation
  75. Lafayette PA 675 Schematic ?
  76. phono preamp?
  77. Input tube recommendations...
  78. blind test tube preamp free for all
  79. Estimate Miller of Triode Strapped Pentode
  80. Tube Care for Prolonged Life
  81. bias resistor to use for a PP 300B?
  82. 12AY7 preamp schematic
  83. visio shapes
  84. vt25 in pre amp
  85. Single supply 6922 buffer with 2SK CCS
  86. Aikido and 30W Class AB power buffer?
  87. Simple Pentode driver for a 45 ?
  88. Sennheiser HD 650 Question
  89. Edcor specs?
  90. 6X5, 2x 6SL7 &amp; a 6v6GT....
  91. strange tube? E-8128
  92. Value of grid-leak resistor
  93. TubeTech Valves
  94. 1st build done.
  95. Tube socket does not fit tube
  96. 300B SET Bias Help
  97. This Connector for an Amp Umbilical?
  98. Chassis Grounding and rectifiers
  99. TechTube TM Blackburn status
  100. Protection of tubes/amp...
  101. 6sf5
  102. EF86 - Interstage transformer - EL84 PP AB
  103. Schadeode
  104. High-power amplifier using transmitting tubes
  105. Basic testing/meter question
  106. Mains voltage change for Sonic Frontiers SFS80 ?
  107. transformer unused secondary noobie question
  108. Acrosound High Power Williamson - HELP!!!!
  109. 300B Cathode Feedback + Cathode Bias
  110. "Budget" GM70 SET
  111. Chokes next to output transformers?
  112. Adding more power tubes and make a tube amp switching them?
  113. 1. time biasing...
  114. SE solution wanted
  115. tube rectifier
  116. Baldwin amp, yet another amp conversion project
  117. sorry, yet another newbie - what can I make with these???
  118. Design Help (load line) on a SE Mono Block Amp build
  119. Plate Choke SRPP…. What do think?
  120. Looking for a Fisher chassis 51 mono amp
  121. Majestic Transformers
  122. Inverted Mos HV soft start
  123. Strange S5 K-16LS oscilloscope readings
  124. Why don't pentodes require aligned grids?
  125. First design for a tube noob
  126. Newbie and ASL Wave 8 problems
  127. Now I know what this Tranny can do
  128. Pinnacle tubes??
  129. First Project.... and Hello
  130. VTL Integrator schematic
  131. Old transformators...
  132. 12AU7/12AT7/12AX7 preamp schmatic needed
  133. Booz preamp
  134. Mystery &quot;The Fisher&quot; console mono amp
  135. Voltage Doubler
  136. Gas Reference Tube (5651/85A1/etc) Internal Impedance
  137. Sakuma-San Pilgramage?
  138. xL508/6KW6/17KW6
  139. 6C45 phono input only?
  140. Initial Thoughts for "Mr. Piggy" SE Amp w/Screen Driven 6P45S
  141. Switch box using VR glow tubes
  142. Ideas for a simple 6080/6AS7 Push-Pull amplifier
  143. TJ 845 Tubes
  144. Looking for a web tutorial on basic calculations
  145. Berman linestage- do I reference heaters or not?!
  146. calculating gain
  147. Simple EL84 amp...
  148. Raphaelite Audio Transformers &amp; Sino Tube Amplifier Kits - What's your experience ?
  149. S-5 Electronics K-16LS & 6V6 Substitution
  150. how to calculate current requirement
  151. Stancor Transformer Data Sheet Needed
  152. 6BL7 replecement
  153. Toroid PT question
  154. New SET Amp
  155. What do you guys think..
  156. Output Stage in MJ Question
  157. Input voltage on an integrated tube amp
  158. 6sf5 = 1/2 12ax7?
  159. Observations of amplifier sound
  160. Sovtek KT88
  161. 24 or 24a as driver in 2 stage..?
  162. Too high transformator voltages...
  163. This power supply ok?
  164. 300B valves
  165. Modulation transformer for a driver transformer?
  166. Is 6V DC too low for heater filament?
  167. need manual for heathkit sp2
  168. Interresting Quiz. Which tube is this?
  169. el84 burn in time ?
  170. Tube Amp Compensation Q
  171. Quad II Advice
  172. Bias problem- 1 Socket shows extremely low bias!
  173. ECC88 vs E88CC
  174. can trafo laminations rest on chassis?
  175. Ping Poindexter - 6SN7 Moebius Linestage Question
  176. More information wanted on this Phase Splitter Circuit
  177. 6UA4-GTA Question
  178. LED cathode bias - how to pick LED?
  179. preamp question
  180. Watch this !
  181. any Welborne Labs Ultrapath owners ?
  182. McIntosh transformer turns ratio
  183. 12E1 & S11E12 as a KT88 substitution
  184. Dynaco ST-70 Triode Conversion Techniques
  185. Larry Moore power supply
  186. SE to Balanced tube preamp idea
  187. Help on Cascode DN2540 CCS
  188. Kt88 Pp
  189. What was the diy world like before the internet?
  190. Updated my website
  191. Interstage question in 6ac5G design
  192. Using a powered sub with my tube amp
  193. 807pp suggestions and guidance please
  194. 2 stage IT coupled SE suggestions.?
  195. WE429A similar to 6V6?
  196. 6FQ7 in RH84
  197. What splitter for this design ?
  198. preamp kit?
  199. PP power supply design questions
  200. Hammond 1650P for KT88 PP - any experience?
  201. Cathode Bypass caps - how to choose?
  202. Marantz 9 output power switch
  203. Single ended KT88 question
  204. Please post your experience with 6C45 and 6H30
  205. Series-Shunt Regulator I need
  206. Hammond Gripe
  207. capacitors in series- what value balancing resistors?
  208. Substituting Pentode for Triode
  209. Pentode Driver Calculations
  210. DHT and speed issues
  211. Aikido vibration issue
  212. Modified Salas Mosfet Shunt Reg
  213. What if O.H. Schade had MOSFETs?
  214. Please Look at my circuit
  215. EL34 tube amp that needs work on
  216. question on differential stage
  217. Need help with my ST70, decrease in one channel
  218. Diff drive
  219. Stereo Aikido GND help
  220. Hashimoto HL-20K-6 Line Output Transformers
  221. What is the RIGHT way to calculate the Value of the cathode resistor?
  222. Kt88 Se
  223. ping Tom Schlangen
  224. Found An Old Transformer, Now What???
  225. Brook 22A restoration, HELP!!
  226. Optimal operating point for 7N7/6SN7?
  227. Loudness Control Calc - Help Please
  228. Kofi Annan in: "Cascodin' with Steve Bench's RIAA!"
  229. New 300B PP amp completed, phase shift questions
  230. One more PSU2 question
  231. 5U4 Darling power TX advice needed
  232. how to optimize this pentode PP (PP1 clone with S11E12)
  233. Can I change the input to a 6SL7?
  234. Outputtransformer to IGA 6550C ULPP
  235. Question on use PSUD2 software
  236. Please add to my confusion re stepup transformers
  237. filament power supply question
  238. Major Hum Problem
  239. FARMER LAMP amp
  240. Valve amp "master class"
  241. Toroid power transformers - are they a good idea?
  242. EL84 SE amplifier
  243. Gain Problems
  244. My SE KT-88 Build thread
  245. Rolling da(rling's) 6j4wa
  246. Phono pre amp
  247. Michealson Audio Da Vinci Preamp
  248. Acrosound PP 6550: Any Advice?
  249. PS idea: isolating transformer from load
  250. K-16LS Help Please

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