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  1. 6GE5 in driver service for class B P-P
  2. Replace Electrolytics?
  3. Can OT's couple?
  4. gates m-3638 preamp
  5. Oversized caps (PS and coupling) in RH84: Problem?
  6. What makes a great concertina triode?
  7. Luxman SQ5A
  8. Spice model with grid current 12ax7
  9. converting a magnavox pp 6v6 in triode mode
  10. 6V6 filaments in series
  11. my loud valve preamp
  12. Tranformer for Chinese pre amp (6N11) ?
  13. 1 watt desk speaker
  14. PE06/40 replacement
  15. Salvaged console tube reciever
  16. EF86 swap for 6BQ5 reverb?
  17. Yaqin CD3 Impressions and Internals
  18. svetlana 6D22S heater issues/question
  19. Unity-Gain EL84 Push-Pull Power Buffer
  20. Tube rectifier input capacitance
  21. Borbely hybrid Tube-MOSFET opamp
  22. Help! Tube Rolling
  23. Articles on Global Feedback
  24. Symetrical out low Zout
  25. Any Rimlock PCB sockets out there?
  26. 12SN7 Round Plate Tung Sol--is there such a thing?
  27. Vintage 2a3 tube amp
  28. Balance in CCS Long Tailed Pairs
  29. Audioromy 813 Mains Transformer
  30. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  31. use 120V x 2 for Aikido octal transformer?
  32. P-P O/P Trafo with only 2 tubes insead of 4?
  33. Eico HF-87 refurb
  34. Which SS CCS for the plate load on a 6N1P?
  35. Um, Can I do this?
  36. Eico power supply trouble (hlp plz)
  37. TV live regulator to tube preamp
  38. How to Spec Headphone output transformers
  39. Can I enlarge the mounting hole on Mosfet?
  40. Meng Yue 6P1
  41. Finding triode curves
  42. Critique my schematic 12ay7 linestage
  43. Suppresor Grid used for Feedback?
  44. Power Cascode
  45. Audio grade components
  46. Line Voltage with Yaqin MC-100B amp
  47. heater warmup and b+ delay
  48. BAL to UNBAL DAC buffer
  49. Counterpoint SA-7 - need a pic of the inside
  50. Are Chinese 6N2 the same as Russian 6N2P?
  51. New project; Musical Machine
  52. 4D32 SE amp, a few more questions
  53. Static shock with simple se
  54. Old electrolytic caps ok? MOSCODE 600
  55. Transformer Flux Band Tips and Tricks?
  56. What tube config will get this sound?
  57. On cleaning transformers
  58. My first project ELEKIT TU-870R
  59. DC7 MkII :New Schade 6080 amp.
  60. current driver tube amplifier
  61. A DC coupled headphones amp
  62. Ebay trader zhangsheng
  63. decware kits worth it?
  64. Simple test for transformer frequency response?
  65. Power Trans. Load Test
  66. Replacing Cap Across Filter Cap
  67. Regulate HV preamp with floating LM317?
  68. Rogers cadet 3
  69. Output impedance tap considerations.....
  70. Amp switch safety load
  71. MF X-10D replica problem
  72. Nice triode
  73. Low gain preamplifier
  74. Improving a Maple Tree Audio PS 2 power supply
  75. Baby Huey-ish phono?
  76. New? Local Feedback Method
  77. PSUD Help Needed: What value do I enter for current?
  78. Question on WE310
  79. How do you calculate choke size in a power supply?
  80. tubecad and tubecad se
  81. 300B amp Power Supply
  82. Adjustable internal Resonance?
  83. B+ Voltage sag for AB1 PP
  84. Maplin
  85. Preamp with an integrated amp
  86. First "boot" in 15 years
  87. Inherited these tubes. Anything interesting?
  88. What application for this tube?
  89. do I need to upgrade my heater supply to add another tube?
  90. Anyone have curves for a 2C52?
  91. tube-amplifier-shaped-usb-speaker
  92. pre-amp tubes: matching and care
  93. How to self taught about building tube amplifiers
  94. Any pretty good/bad Chinese amps?
  95. Couple idiot questions....
  96. Looking for the triode mode of Z759
  97. Couple idiot questions....
  98. push pull 45
  99. 6sj7 spice model
  100. Help finding parallel 45 SE schematic
  101. filling in the low end, 6bq5 12ax7 circuitry
  102. Dynaco Mark VI
  103. Looking for Sonic Frontiers SFS80 Schematic
  104. CCS or V.REG for OP anode
  105. Yarland FV 34CIII
  106. Damper diodes, center tapped heater, B+
  107. Dynaco ST-35 Newbie cathodyne question
  108. Anyone have valve/tube libraries for express PCB or PCB123?
  109. Looking for the Ultimate Aikido.
  110. CCS loaded DHT cathode follower?
  111. Phono stage with LT1028 MC input
  112. New valve int flash over why ?
  113. Sweep tube suggestions
  114. Amp project output problem
  115. 12AX7,6BQ5 PP Amp Search.
  116. Dynaco MkIII preamp/linestage recommendations?
  117. Can someone please check my PCB layout for this preamp?
  118. Bottlehead Filament Choke FC-1 for Push-Pull?
  119. Home James! But first, which transformer?
  120. NAD preamp = 6BQ5 Frankenschteen
  121. Wintersweet highvividity driver circuit
  122. Looking for TT11(CV1501) triode mode curve
  123. Amp switching with 4093/4066. How to add indicator LEDs?
  124. Yaqin MC-10L Blown Fuse
  125. 2a3 amp, progress picture
  126. How do I implement an AZ1 rec tube???
  127. Profit margin on used tube amps
  128. 300B sockets (different question)
  129. tri-amping question (s)
  130. Unity coupled power stage
  131. Acquired A Bunch Of Tubes
  132. Understanding load lines
  133. what would happen if.........?
  134. Testing valves/tubes
  135. 300b socket
  136. Vertical vs. Horizontal does it matter?
  137. Layout thoughts hmm....
  138. ID request, is this a pre?
  139. Anyone got any info on the Tippatone 500 watt amps?
  140. SMPS for Filaments?
  141. Using 6n6pi Push and Pull
  142. Optimum Tube Temperature
  143. 5670
  144. will this spice works in real word?
  145. An amplifier for Burning Man
  146. 12AT7,12AU7 Ultra linear cascode
  147. El Cheapo Grande
  148. EL84 Unused pins safe to connect?
  149. 6BQ5/EL84 tube buffer questions
  150. How much power do I need?
  151. Tube buffer/preamp. Where to place voltage divider?
  152. Schematic wanted for VTL Preamp "Maximal"
  153. modified GEC 88-50
  154. Zenith 7B31 Help
  155. Do swingers always buzz when they swing?
  156. 6at6 tube? What can i use it for?
  157. Sovtek 6550WA?
  158. how to make a tube gyrator eq?
  159. Transformer needed or "solid state guy needs help from tube guys"
  160. Differential input, SET output
  161. FFT of PSUD2 output?
  162. Differential push-pull design question
  163. Any EF184 users?
  164. 30P1S - How to use them?
  165. st-70 as good as it gets?
  166. Subbing in a TVC - input load Q
  167. Chinese tubes, new ones or relabeled?
  168. 6AV6 => 12AX7 question
  169. 845 & 300b tubes
  170. Sourcing sockets and plugs for power supply umbilicals
  171. Sub mini history question ...
  172. 6DX8 Amp for Headphones and Low Volume Needs
  173. Surplus Voltage Solution
  174. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  175. RCA mystery tube help
  176. Sub-Miniature Tubes - Low Voltage
  177. True direct-coupled PP amp
  178. "Radical" twist on an all DHT phonostage
  179. input tubes for 300b
  180. JE Labs simple 2a3 filiment tranny, 1 or 2?
  181. ebay Valve Preamps boards for 18 !
  182. Smoothing caps
  183. Spud issues - a little help, please
  184. Has anyone here built something with this super triode?
  185. What is this part in old radio?
  186. Has anyone done anything with a 5977 sub-mini
  187. Driving EQ from kathode resistor
  188. Understanding CCS vs CVS
  189. Can you believe this!
  190. help with my humming valve amp
  191. Picking tubes for SimpleSE-ish amplifier
  192. 6gk5/ECC88 Phono any comments.
  193. Meng Yue X1 6P1 amp (NOT the mini)
  194. Basic HiFi Tube Amp Layout? Please?
  195. stupid switch question
  196. Max Current of James JS-6123HS Transformer
  197. How do you determine a driver stage?
  198. SUPER cheap nos tubes if you live in california.
  199. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  200. Can't get adjustable reg to work
  201. 9 volt tube preamp.
  202. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  203. Equivalent to IXCP10M45S?
  204. Looking for non-DRD 300B using D3a as driver
  205. Akai M8 rebuild/restore/will-this-work?
  206. space charge 12fx8 amp or preamp schematic?
  207. Help with setup to trace UL curves
  208. My KT88 Williamson Amp Build
  209. UV 203A any good for audio ?
  210. What gives with this square wave?
  211. bottlehead paramour PT
  212. DC filament supply without electrolytic(s)?
  213. Looking for R Core power trafo and choke
  214. PP tube amp for bi-amping : above 400 hz
  215. 6N6P question
  216. Integrated valve amplifier : to buy or to build
  217. Lookin for an ST-70-like project
  218. Formula for Zout of diff pair
  219. 6SL7 and Crossovers
  220. Meng Yue: EL34 or 6P1?
  221. Power Transformers and chokes
  222. nos amperex authentic? label doesn't rub off
  223. Software analysis using tube analog circuit Audio Note Kit 1
  224. Webster Amps,Racine Wis.
  225. Help figuring out resistor values
  226. Small (Novel) Tube Rectifiers?
  227. Conrad Johnson ART preamp question.
  228. pd510
  229. i want to build 3D21WB tube PP amp
  230. How to choose an optimal load line for a cathode follwer buffer?
  231. removing sound controlls...
  232. Pentode cathode follower output impedance
  233. Telematic KC401
  234. ebay, 7c kit, worth it?
  235. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  236. Olson AM-158
  237. Check out my KT88 curves
  238. Just another /\|OOB to Tubes....Need Schem Help
  239. Problem with 832A PP amp
  240. Marantz 8b power transformer
  241. New SET Project
  242. Magnavox Model #OFMC26 Tube Stereo
  243. Balancing Servo
  244. Akai M8 Modding Service Required
  245. 12AX7 basics, some questions on wiring
  246. Tube Shield
  247. Choosing an output transformer
  248. Lost in Translation - DIY Japan
  249. Ebay KT88
  250. Filament voltages - an idle curiosity

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