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  1. Russian tubes / capacitors purchasing
  2. Bored with Leak ST20 - ideas?
  3. KT-88 Music Angel problems with sound level
  4. Fusion Hybrid 300B
  5. I'm new here..... :(
  6. DIY/Buy/Kit
  7. Ralph from Atma-sphere will be giving a talk 09/16
  8. Modified USB DAC board, DDDAC with triode buffer
  9. LS50/GU50 Both Grid Drive
  10. Aikido filament question
  11. 6l6 Se.
  12. Feedback requested on 7591 PP design
  13. Blackburn Mullard/Philips video
  14. DIY sheilded B+ cable
  15. Experimenters Tube Sockets
  16. Used freebies precipitate questions
  17. Mains toroid as IT with DC balance?
  18. Tubes for Viva Solista 845 SET amp
  19. SE transformer for PP duty?
  20. Warning: new SS relay question / No flame I
  21. Tube Haunts Thread?
  22. Problem with Maida regulator
  23. 2 stage SE IT coupled amps..
  24. BUF420M Current Sink
  25. Direct from the mains?
  26. PSU capacitors: 30uF film ok instead of 100uF electrolytic?
  27. Annealed silicon core opt`s
  28. Designing a "cheap" highish-power PP amp...
  29. Improvements for the Mikael Abdellah KT88???
  30. DC supply on driver tube hums..
  31. Sun Audio SV-2A3
  32. Mullard Blackburn Tube Factory Tour Video
  33. SE amp: Please suggest a better operating point
  34. Paralleling Outputs or Bi-amp
  35. triple triode common cathode - only want to use 2 triodes
  36. Luxman 3045 Mono Block Tube Amp
  37. Eye tube for balancing multi amp system
  38. 12ax7 preamp.
  39. External PSU for Quad 22 pre-amplifier
  40. Keep Blowing Fuses
  41. learning tube rectified psu
  42. 17JB6... guitar amp?
  43. Series of Diode on HT Plate
  44. Quad II power amps......power output transformers!!!
  45. Mullard (factory) making tubes again
  46. CFB and A2 operation
  47. DIY triode
  48. Interesting symmetrical amp from 1955 magazine
  49. 6N23P, 6S19P anybody knows?
  50. Worlds smallest HiFi valve amp
  51. A DIY Interruptus Moment
  52. Noisy EL84 amp needs new front end
  53. Loosening up magnetic "stiction"
  54. The Return Of Blackburn Mullards?
  55. Can I use different value cap?
  56. tubelab SimpleSe power transformer connection question
  57. need output transformer for Fisher
  58. help for E182CC linestage/driver
  59. User Beware: A Report On Jj Tubes
  60. Depletion mode mosfets for 2mA CCS ?
  61. New tube stash question
  62. Stepped attenuator recommendation...
  63. Pros and cons of Cascoded front ends
  64. EF86 as a volume pot, line pre 2008
  65. RCA voltage regulator
  66. Input voltage attenuation
  67. Valve Buffer amp
  68. 6y6ga
  69. Filmosound L-1 6V6 Volume pot issue
  70. 3C24 in a SE output stage - output transformer impedance recommendation !!!
  71. Another 3f4 spice triode model: 5718 submini triode
  72. hp-8903B advice??
  73. need info on how to convert my bogen k10 for guitars use
  74. Differential Amplfiers - current sources under/over the triodes
  75. Impedance rate VS impedance stability
  76. Anyone running Mikael's SE KT88 in Pentode?
  77. what double triode is less microphonic ?
  78. Need advice on proper use of anode chokes.
  79. Grounding problem?
  80. Current regulation for filament of say a 300B
  81. diagram for OTP 6.6K valve KT88
  82. Dynaco Pas Transformer
  83. Regulated screen supply
  84. Shocked!!!
  85. set el84 tube amp
  86. tube preamp RIAA
  87. 4E27 as a substitution of 845
  88. LS 37 lite audio phono
  89. I want to build an amp!!!
  90. Multimeter test leads?
  91. Choosing proper g2 grid stoppers for SE UL..?
  92. audio note P1SE improvements
  93. Help for choke input regulated PSU
  94. 5687 perveance
  95. Where Can I Pick Up Neutral
  96. Hyperlinear line preamp
  97. What tube to use.
  98. Using mains transformer as output transformer
  99. AutoCAD of tube Packages?
  100. Has Anyone Tried This Before??
  101. More Tube Learning (for me) Cathode followers
  102. weird hum problem
  103. Simple technique for guitar amp channel switching?
  104. Weird oscillation
  105. Tube stash strategy and testing (long)
  106. Choke loaded LTP
  107. LM Ericsson 2C51 help!
  108. Antek TXs??Any use em???
  109. Speaker impedance questions (SE KT88)
  110. Spud-Assist: Totem-Pole Current-Mirror PP Hybrid
  111. my 6922 / E88CC preamp
  112. For the moderator
  113. 3 amps for HE speakers
  114. Pentode sounds great
  115. Shindo claret
  116. james 6123hs
  117. 6550 Amplifier
  118. ARC Ls 15 Schematic
  119. Super spud-amp?
  120. Basic Oscilloscope Usage Questions
  121. Grounded Cathode phase?
  122. Simple SE, how to wire CFB with outputs for different speaker impedances?
  123. PCB Board designer?
  124. Speaker for your low power tube amp?
  125. Tube collection Database.
  126. E288cc value?
  127. Hi End Tube Project
  128. parallel SE 2A3
  129. Want to build a tube/SS hybrid preamp for HT
  130. Do anyone has schematic for Counterpoint SA3000 ?
  131. Thermistor B+ or primary
  132. Measuring AC at Radio Frequencies
  133. The MingDa MC67-HA meets Frankenstein
  134. What's the biggest full wave damper diode?
  135. Maximising Tube Life
  136. Darling power supply calculations
  137. This is nice - Pix Ongen tube RIAA amp
  138. Tubelab SE 45... Super amp!?
  139. DAC - tube gain stage w/ AC heaters
  140. Microphonics?
  141. Insides of Tango Transformers
  142. Thoughts on horizontal sweep tubes?
  143. 2A3 Design Issues (Long)
  144. Design using EL42 output pentodes
  145. Blumlein's Garter Bias question
  146. Original ECL86 "Baby Huey" thread
  147. Too low heater voltage?
  148. Tube and digital?
  149. 807 monoblocks
  150. What to swap a 6AV6 for?
  151. Pot Noise Help
  152. cathode bias circuit question
  153. ECC40 driver stage for 2A3
  154. heater current and 6922 - 6n6p swap
  155. Tube Crystal Clock Oscillator
  156. Decware Zen Plate Model ZSP1
  157. Battery Power Preamp E188CC review please !
  158. 6sl7
  159. Tube sale at AES
  160. 5v3a
  161. 813 trioded Datasheet and curves
  162. Importance of resistor working voltage spec?
  163. TCJ My-Stock DB
  164. 845 Amp
  165. Ripple filtering help... strange slow rise and fall of voltage
  166. Plate and Filament Transformers
  167. Tentlabs Neg Bias Vs Machmat AFB
  168. Looking for 12AT7/ECC81 phonostage schematic
  169. 6AV5 PP amp Design Review
  170. 6sn7 Preamp power supply
  171. Please: tube kit for <$300?
  172. making a load line
  173. Telefunken Consoles: not just for tube and iron scavenging!
  174. Genalex Gold Lion KT77
  175. driving HD600
  176. Counterpoint SA-3000
  177. Phono stage for 2 7F7s (stereo) plus buffer?
  178. Help and your input on YAQIN MC10L EL34
  179. EL Cheapo Quad amplifier???
  180. Noob questions about a K-12/K-502 kit
  181. 3 quick transformer questions
  182. Push Pull Output tranies for SE amp?
  183. Tube Rectifier Capacitance?
  184. rca 189 b console amps need more info
  185. upgrade transformer?
  186. Parasitic oscillation? (picture)
  187. newbie question : driver/output relationship, input sensitivity
  188. Unknown tube logo
  189. Impedance, the 10x rule, losses & bandwidth
  190. el84/6bq5 PSE
  191. A very odd phase inverter- comments?
  192. Please check my work :)
  193. NOS purchase, should I be concerned?
  194. Strange splitter in the Audio Research D4
  195. 6ak5/5654 plate resistance
  196. Further Troubleshooting Simple SE
  197. What is the purpose of the g2 bypass cap?
  198. questionable 2a3 schematic
  199. overdrive circuit for hammond organs(need help)
  200. A singular experiment with a unheated tube.
  201. Limited bass response in one channel
  202. Show me your fave phonostage circuits.
  203. tube heater voltage, how much is too much?
  204. Para feed choke
  205. Dynaco ST35 power?
  206. Tips/comments for upcoming 300B build
  207. page Eli Duttman's Simple p-p with 5965 MQ EXO-173 and 6AQ5
  208. DHT cathode follower idea
  209. GK71 Output Transformer
  210. Schematics for A.I. Mod 2D
  211. Determing Battery Voltage for cathode bias
  212. OT for audio but still tube
  213. Getting transfer characteristics
  214. Pentodes and Choke Loading
  215. Stepped airgap choke ?
  216. Noob question
  217. SE 300B Integrated Amp: Help choose circuit design
  218. SunAudio 2A3 to 300B
  219. Filament Snubber Cap Explodes! What happened?
  220. Alot of 12AX7's about
  221. DIY tube microphone preamp
  222. Tube tester and PSUD II questions
  223. Wurlitzer/Fisher Amp Musings
  224. please check my work
  225. How to get cathode bias info from grid bias info?
  226. SE 300B Integrated Amp: Transformers
  227. Positive feedback, improperly drawn screen, or WTF?
  228. GE Console RC 7100 A - need some help!
  229. Output tube for 600V B+, 5800 ohm primary PP, tertiary 25% UL taps?
  230. Still tring to find a couple 100uf motor runs
  231. small push-pull amp to preamp
  232. Electraprint EL84 PP with PSA-2N
  233. OpAmp Swap?
  234. Bogen MX-60A- output transformer bandwidth?
  235. 6AS7 Parallel Feed Amp
  236. PSpice model of output transformer
  237. simple guitar push pull amp
  238. Siemens capacitor
  239. Super 6BG6 vs. 6550
  240. 5687 line stage
  241. Audio Standards
  242. 4 x used 5867A (TB3/750) triodes
  243. 12au7 who has the best ultra low noise ???
  244. Questions about tweaking the Miniblok SET...
  245. The core -sonic reasons
  246. Removing pot from valve pre amp
  247. Power transformer question
  248. Tube construction materials
  249. LTP second grid
  250. How to figure out the bias point of fisher X-100A

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