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

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