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  1. Paralleling Outputs or Bi-amp
  2. triple triode common cathode - only want to use 2 triodes
  3. Luxman 3045 Mono Block Tube Amp
  4. Eye tube for balancing multi amp system
  5. 12ax7 preamp.
  6. External PSU for Quad 22 pre-amplifier
  7. Keep Blowing Fuses
  8. learning tube rectified psu
  9. 17JB6... guitar amp?
  10. Series of Diode on HT Plate
  11. Quad II power amps......power output transformers!!!
  12. Mullard (factory) making tubes again
  13. CFB and A2 operation
  14. DIY triode
  15. Interesting symmetrical amp from 1955 magazine
  16. 6N23P, 6S19P anybody knows?
  17. Worlds smallest HiFi valve amp
  18. A DIY Interruptus Moment
  19. Noisy EL84 amp needs new front end
  20. Loosening up magnetic "stiction"
  21. The Return Of Blackburn Mullards?
  22. Can I use different value cap?
  23. tubelab SimpleSe power transformer connection question
  24. need output transformer for Fisher
  25. help for E182CC linestage/driver
  26. User Beware: A Report On Jj Tubes
  27. Depletion mode mosfets for 2mA CCS ?
  28. New tube stash question
  29. Stepped attenuator recommendation...
  30. Pros and cons of Cascoded front ends
  31. EF86 as a volume pot, line pre 2008
  32. RCA voltage regulator
  33. Input voltage attenuation
  34. Valve Buffer amp
  35. 6y6ga
  36. Filmosound L-1 6V6 Volume pot issue
  37. 3C24 in a SE output stage - output transformer impedance recommendation !!!
  38. Another 3f4 spice triode model: 5718 submini triode
  39. hp-8903B advice??
  40. need info on how to convert my bogen k10 for guitars use
  41. Differential Amplfiers - current sources under/over the triodes
  42. Impedance rate VS impedance stability
  43. Anyone running Mikael's SE KT88 in Pentode?
  44. what double triode is less microphonic ?
  45. Need advice on proper use of anode chokes.
  46. Grounding problem?
  47. Current regulation for filament of say a 300B
  48. diagram for OTP 6.6K valve KT88
  49. Dynaco Pas Transformer
  50. Regulated screen supply
  51. Shocked!!!
  52. set el84 tube amp
  53. tube preamp RIAA
  54. 4E27 as a substitution of 845
  55. LS 37 lite audio phono
  56. I want to build an amp!!!
  57. Multimeter test leads?
  58. Choosing proper g2 grid stoppers for SE UL..?
  59. audio note P1SE improvements
  60. Help for choke input regulated PSU
  61. 5687 perveance
  62. Where Can I Pick Up Neutral
  63. Hyperlinear line preamp
  64. What tube to use.
  65. Using mains transformer as output transformer
  66. AutoCAD of tube Packages?
  67. Has Anyone Tried This Before??
  68. More Tube Learning (for me) Cathode followers
  69. weird hum problem
  70. Simple technique for guitar amp channel switching?
  71. Weird oscillation
  72. Tube stash strategy and testing (long)
  73. Choke loaded LTP
  74. LM Ericsson 2C51 help!
  75. Antek TXs??Any use em???
  76. Speaker impedance questions (SE KT88)
  77. Spud-Assist: Totem-Pole Current-Mirror PP Hybrid
  78. my 6922 / E88CC preamp
  79. For the moderator
  80. 3 amps for HE speakers
  81. Pentode sounds great
  82. Shindo claret
  83. james 6123hs
  84. 6550 Amplifier
  85. ARC Ls 15 Schematic
  86. Super spud-amp?
  87. Basic Oscilloscope Usage Questions
  88. Grounded Cathode phase?
  89. Simple SE, how to wire CFB with outputs for different speaker impedances?
  90. PCB Board designer?
  91. Speaker for your low power tube amp?
  92. Tube collection Database.
  93. E288cc value?
  94. Hi End Tube Project
  95. parallel SE 2A3
  96. Want to build a tube/SS hybrid preamp for HT
  97. Do anyone has schematic for Counterpoint SA3000 ?
  98. Thermistor B+ or primary
  99. Measuring AC at Radio Frequencies
  100. The MingDa MC67-HA meets Frankenstein
  101. What's the biggest full wave damper diode?
  102. Maximising Tube Life
  103. Darling power supply calculations
  104. This is nice - Pix Ongen tube RIAA amp
  105. Tubelab SE 45... Super amp!?
  106. DAC - tube gain stage w/ AC heaters
  107. Microphonics?
  108. Insides of Tango Transformers
  109. Thoughts on horizontal sweep tubes?
  110. 2A3 Design Issues (Long)
  111. Design using EL42 output pentodes
  112. Blumlein's Garter Bias question
  113. Original ECL86 "Baby Huey" thread
  114. Too low heater voltage?
  115. Tube and digital?
  116. 807 monoblocks
  117. What to swap a 6AV6 for?
  118. Pot Noise Help
  119. cathode bias circuit question
  120. ECC40 driver stage for 2A3
  121. heater current and 6922 - 6n6p swap
  122. Tube Crystal Clock Oscillator
  123. Decware Zen Plate Model ZSP1
  124. Battery Power Preamp E188CC review please !
  125. 6sl7
  126. Tube sale at AES
  127. 5v3a
  128. 813 trioded Datasheet and curves
  129. Importance of resistor working voltage spec?
  130. TCJ My-Stock DB
  131. 845 Amp
  132. Ripple filtering help... strange slow rise and fall of voltage
  133. Plate and Filament Transformers
  134. Tentlabs Neg Bias Vs Machmat AFB
  135. Looking for 12AT7/ECC81 phonostage schematic
  136. 6AV5 PP amp Design Review
  137. 6sn7 Preamp power supply
  138. Please: tube kit for <$300?
  139. making a load line
  140. Telefunken Consoles: not just for tube and iron scavenging!
  141. Genalex Gold Lion KT77
  142. driving HD600
  143. Counterpoint SA-3000
  144. Phono stage for 2 7F7s (stereo) plus buffer?
  145. Help and your input on YAQIN MC10L EL34
  146. EL Cheapo Quad amplifier???
  147. Noob questions about a K-12/K-502 kit
  148. 3 quick transformer questions
  149. Push Pull Output tranies for SE amp?
  150. Tube Rectifier Capacitance?
  151. rca 189 b console amps need more info
  152. upgrade transformer?
  153. Parasitic oscillation? (picture)
  154. newbie question : driver/output relationship, input sensitivity
  155. Unknown tube logo
  156. Impedance, the 10x rule, losses & bandwidth
  157. el84/6bq5 PSE
  158. A very odd phase inverter- comments?
  159. Please check my work :)
  160. NOS purchase, should I be concerned?
  161. Strange splitter in the Audio Research D4
  162. 6ak5/5654 plate resistance
  163. Further Troubleshooting Simple SE
  164. What is the purpose of the g2 bypass cap?
  165. questionable 2a3 schematic
  166. overdrive circuit for hammond organs(need help)
  167. A singular experiment with a unheated tube.
  168. Limited bass response in one channel
  169. Show me your fave phonostage circuits.
  170. tube heater voltage, how much is too much?
  171. Para feed choke
  172. Dynaco ST35 power?
  173. Tips/comments for upcoming 300B build
  174. page Eli Duttman's Simple p-p with 5965 MQ EXO-173 and 6AQ5
  175. DHT cathode follower idea
  176. GK71 Output Transformer
  177. Schematics for A.I. Mod 2D
  178. Determing Battery Voltage for cathode bias
  179. OT for audio but still tube
  180. Getting transfer characteristics
  181. Pentodes and Choke Loading
  182. Stepped airgap choke ?
  183. Noob question
  184. SE 300B Integrated Amp: Help choose circuit design
  185. SunAudio 2A3 to 300B
  186. Filament Snubber Cap Explodes! What happened?
  187. Alot of 12AX7's about
  188. DIY tube microphone preamp
  189. Tube tester and PSUD II questions
  190. Wurlitzer/Fisher Amp Musings
  191. please check my work
  192. How to get cathode bias info from grid bias info?
  193. SE 300B Integrated Amp: Transformers
  194. Positive feedback, improperly drawn screen, or WTF?
  195. GE Console RC 7100 A - need some help!
  196. Output tube for 600V B+, 5800 ohm primary PP, tertiary 25% UL taps?
  197. Still tring to find a couple 100uf motor runs
  198. small push-pull amp to preamp
  199. Electraprint EL84 PP with PSA-2N
  200. OpAmp Swap?
  201. Bogen MX-60A- output transformer bandwidth?
  202. 6AS7 Parallel Feed Amp
  203. PSpice model of output transformer
  204. simple guitar push pull amp
  205. Siemens capacitor
  206. Super 6BG6 vs. 6550
  207. 5687 line stage
  208. Audio Standards
  209. 4 x used 5867A (TB3/750) triodes
  210. 12au7 who has the best ultra low noise ???
  211. Questions about tweaking the Miniblok SET...
  212. The core -sonic reasons
  213. Removing pot from valve pre amp
  214. Power transformer question
  215. Tube construction materials
  216. LTP second grid
  217. How to figure out the bias point of fisher X-100A
  218. Schematic help! (Bell)
  219. Audio Note Soro SE SCHEMATICS
  220. 807 Tube Triode Connected
  221. Would you pls help.
  222. came across this nice 200W tube amp schematic
  223. Anyone seen this amp topology before?
  224. Max. grid resistance
  225. Yaqin mc10l &quot;popping&quot;
  226. Audio Electronics Supply
  227. Alamo Fury 2566
  228. My friends in the USA - tube stores in LA
  229. Can this marraige work?
  230. RJM with 12AY7
  231. Bias winding to power sand
  232. FM Tube radio design
  233. What do you use? Not technical but relative.
  234. looking for a pre-amp schematic
  235. I have waay too many 6DJ8's
  236. Tango NP126
  237. Two 6J5 versus one 6SN7
  238. Bunch of questions regarding plate CCS and some else.
  239. Tube Store in Washington DC (6C33C Triode Buy Where??)
  240. Scott 399 Receiver Schematics?
  241. Need help with 6l6GC choices
  242. Need Hammond/Everett drawings.
  243. 6V6 PP-based Baby Huey/Mullard inspired design needed...
  244. Ecf80
  245. Please Explain difference Mono vs Push Pull vs Single End etc
  246. VU Meters
  247. diy preamps, bottlehead, decware....
  248. Power supply choke help needed
  249. LED cathode biasing in push-pull input stage
  250. applying fixed bias to cathode followers

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