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  1. Depletion mode mosfets for 2mA CCS ?
  2. New tube stash question
  3. Stepped attenuator recommendation...
  4. Pros and cons of Cascoded front ends
  5. EF86 as a volume pot, line pre 2008
  6. RCA voltage regulator
  7. Input voltage attenuation
  8. Valve Buffer amp
  9. 6y6ga
  10. Filmosound L-1 6V6 Volume pot issue
  11. 3C24 in a SE output stage - output transformer impedance recommendation !!!
  12. Another 3f4 spice triode model: 5718 submini triode
  13. hp-8903B advice??
  14. need info on how to convert my bogen k10 for guitars use
  15. Differential Amplfiers - current sources under/over the triodes
  16. Impedance rate VS impedance stability
  17. Anyone running Mikael's SE KT88 in Pentode?
  18. what double triode is less microphonic ?
  19. Need advice on proper use of anode chokes.
  20. Grounding problem?
  21. Current regulation for filament of say a 300B
  22. diagram for OTP 6.6K valve KT88
  23. Dynaco Pas Transformer
  24. Regulated screen supply
  25. Shocked!!!
  26. set el84 tube amp
  27. tube preamp RIAA
  28. 4E27 as a substitution of 845
  29. LS 37 lite audio phono
  30. I want to build an amp!!!
  31. Multimeter test leads?
  32. Choosing proper g2 grid stoppers for SE UL..?
  33. audio note P1SE improvements
  34. Help for choke input regulated PSU
  35. 5687 perveance
  36. Where Can I Pick Up Neutral
  37. Hyperlinear line preamp
  38. What tube to use.
  39. Using mains transformer as output transformer
  40. AutoCAD of tube Packages?
  41. Has Anyone Tried This Before??
  42. More Tube Learning (for me) Cathode followers
  43. weird hum problem
  44. Simple technique for guitar amp channel switching?
  45. Weird oscillation
  46. Tube stash strategy and testing (long)
  47. Choke loaded LTP
  48. LM Ericsson 2C51 help!
  49. Antek TXs??Any use em???
  50. Speaker impedance questions (SE KT88)
  51. Spud-Assist: Totem-Pole Current-Mirror PP Hybrid
  52. my 6922 / E88CC preamp
  53. For the moderator
  54. 3 amps for HE speakers
  55. Pentode sounds great
  56. Shindo claret
  57. james 6123hs
  58. 6550 Amplifier
  59. ARC Ls 15 Schematic
  60. Super spud-amp?
  61. Basic Oscilloscope Usage Questions
  62. Grounded Cathode phase?
  63. Simple SE, how to wire CFB with outputs for different speaker impedances?
  64. PCB Board designer?
  65. Speaker for your low power tube amp?
  66. Tube collection Database.
  67. E288cc value?
  68. Hi End Tube Project
  69. parallel SE 2A3
  70. Want to build a tube/SS hybrid preamp for HT
  71. Do anyone has schematic for Counterpoint SA3000 ?
  72. Thermistor B+ or primary
  73. Measuring AC at Radio Frequencies
  74. The MingDa MC67-HA meets Frankenstein
  75. What's the biggest full wave damper diode?
  76. Maximising Tube Life
  77. Darling power supply calculations
  78. This is nice - Pix Ongen tube RIAA amp
  79. Tubelab SE 45... Super amp!?
  80. DAC - tube gain stage w/ AC heaters
  81. Microphonics?
  82. Insides of Tango Transformers
  83. Thoughts on horizontal sweep tubes?
  84. 2A3 Design Issues (Long)
  85. Design using EL42 output pentodes
  86. Blumlein's Garter Bias question
  87. Original ECL86 "Baby Huey" thread
  88. Too low heater voltage?
  89. Tube and digital?
  90. 807 monoblocks
  91. What to swap a 6AV6 for?
  92. Pot Noise Help
  93. cathode bias circuit question
  94. ECC40 driver stage for 2A3
  95. heater current and 6922 - 6n6p swap
  96. Tube Crystal Clock Oscillator
  97. Decware Zen Plate Model ZSP1
  98. Battery Power Preamp E188CC review please !
  99. 6sl7
  100. Tube sale at AES
  101. 5v3a
  102. 813 trioded Datasheet and curves
  103. Importance of resistor working voltage spec?
  104. TCJ My-Stock DB
  105. 845 Amp
  106. Ripple filtering help... strange slow rise and fall of voltage
  107. Plate and Filament Transformers
  108. Tentlabs Neg Bias Vs Machmat AFB
  109. Looking for 12AT7/ECC81 phonostage schematic
  110. 6AV5 PP amp Design Review
  111. 6sn7 Preamp power supply
  112. Please: tube kit for <$300?
  113. making a load line
  114. Telefunken Consoles: not just for tube and iron scavenging!
  115. Genalex Gold Lion KT77
  116. driving HD600
  117. Counterpoint SA-3000
  118. Phono stage for 2 7F7s (stereo) plus buffer?
  119. Help and your input on YAQIN MC10L EL34
  120. EL Cheapo Quad amplifier???
  121. Noob questions about a K-12/K-502 kit
  122. 3 quick transformer questions
  123. Push Pull Output tranies for SE amp?
  124. Tube Rectifier Capacitance?
  125. rca 189 b console amps need more info
  126. upgrade transformer?
  127. Parasitic oscillation? (picture)
  128. newbie question : driver/output relationship, input sensitivity
  129. Unknown tube logo
  130. Impedance, the 10x rule, losses & bandwidth
  131. el84/6bq5 PSE
  132. A very odd phase inverter- comments?
  133. Please check my work :)
  134. NOS purchase, should I be concerned?
  135. Strange splitter in the Audio Research D4
  136. 6ak5/5654 plate resistance
  137. Further Troubleshooting Simple SE
  138. What is the purpose of the g2 bypass cap?
  139. questionable 2a3 schematic
  140. overdrive circuit for hammond organs(need help)
  141. A singular experiment with a unheated tube.
  142. Limited bass response in one channel
  143. Show me your fave phonostage circuits.
  144. tube heater voltage, how much is too much?
  145. Para feed choke
  146. Dynaco ST35 power?
  147. Tips/comments for upcoming 300B build
  148. page Eli Duttman's Simple p-p with 5965 MQ EXO-173 and 6AQ5
  149. DHT cathode follower idea
  150. GK71 Output Transformer
  151. Schematics for A.I. Mod 2D
  152. Determing Battery Voltage for cathode bias
  153. OT for audio but still tube
  154. Getting transfer characteristics
  155. Pentodes and Choke Loading
  156. Stepped airgap choke ?
  157. Noob question
  158. SE 300B Integrated Amp: Help choose circuit design
  159. SunAudio 2A3 to 300B
  160. Filament Snubber Cap Explodes! What happened?
  161. Alot of 12AX7's about
  162. DIY tube microphone preamp
  163. Tube tester and PSUD II questions
  164. Wurlitzer/Fisher Amp Musings
  165. please check my work
  166. How to get cathode bias info from grid bias info?
  167. SE 300B Integrated Amp: Transformers
  168. Positive feedback, improperly drawn screen, or WTF?
  169. GE Console RC 7100 A - need some help!
  170. Output tube for 600V B+, 5800 ohm primary PP, tertiary 25% UL taps?
  171. Still tring to find a couple 100uf motor runs
  172. small push-pull amp to preamp
  173. Electraprint EL84 PP with PSA-2N
  174. OpAmp Swap?
  175. Bogen MX-60A- output transformer bandwidth?
  176. 6AS7 Parallel Feed Amp
  177. PSpice model of output transformer
  178. simple guitar push pull amp
  179. Siemens capacitor
  180. Super 6BG6 vs. 6550
  181. 5687 line stage
  182. Audio Standards
  183. 4 x used 5867A (TB3/750) triodes
  184. 12au7 who has the best ultra low noise ???
  185. Questions about tweaking the Miniblok SET...
  186. The core -sonic reasons
  187. Removing pot from valve pre amp
  188. Power transformer question
  189. Tube construction materials
  190. LTP second grid
  191. How to figure out the bias point of fisher X-100A
  192. Schematic help! (Bell)
  193. Audio Note Soro SE SCHEMATICS
  194. 807 Tube Triode Connected
  195. Would you pls help.
  196. came across this nice 200W tube amp schematic
  197. Anyone seen this amp topology before?
  198. Max. grid resistance
  199. Yaqin mc10l &quot;popping&quot;
  200. Audio Electronics Supply
  201. Alamo Fury 2566
  202. My friends in the USA - tube stores in LA
  203. Can this marraige work?
  204. RJM with 12AY7
  205. Bias winding to power sand
  206. FM Tube radio design
  207. What do you use? Not technical but relative.
  208. looking for a pre-amp schematic
  209. I have waay too many 6DJ8's
  210. Tango NP126
  211. Two 6J5 versus one 6SN7
  212. Bunch of questions regarding plate CCS and some else.
  213. Tube Store in Washington DC (6C33C Triode Buy Where??)
  214. Scott 399 Receiver Schematics?
  215. Need help with 6l6GC choices
  216. Need Hammond/Everett drawings.
  217. 6V6 PP-based Baby Huey/Mullard inspired design needed...
  218. Ecf80
  219. Please Explain difference Mono vs Push Pull vs Single End etc
  220. VU Meters
  221. diy preamps, bottlehead, decware....
  222. Power supply choke help needed
  223. LED cathode biasing in push-pull input stage
  224. applying fixed bias to cathode followers
  225. Battieries for B+
  226. Put amp in chassis, then, right channel doesn't work!
  227. hammond transformers?
  228. Two Rectifiers, One transformer
  229. Cool problem with Marshall TSL!!!
  230. Tubes currently in production
  231. Rachel's Corner - Shuguang
  232. Small 50C5 Amp improvements
  233. Low voltage pentode?
  234. TX distortion
  235. DIY U-L curves
  236. Transformer spacing
  237. Covers for budget output transformers
  238. Correct for bipolar voltage doubler?
  239. Source for 100uf motor run cap.
  240. magnavox 185aa with 4-6v6
  241. Yaqin 300B re-biasing
  242. Line Amp Diy 6j1
  243. Diy Line Amp£_£_6sn7
  244. Diy Line Amp Audio Note M7
  245. Diy Line Amp Cat Sl-1
  246. Diy Line Amp Malanz 7
  247. Diy Line Amp Htm
  248. Diy Line Amp 5670
  249. Diy Line Amp Jp-80
  250. Quality difference between output transformers

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