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  1. 1 watt desk speaker
  2. PE06/40 replacement
  3. Salvaged console tube reciever
  4. EF86 swap for 6BQ5 reverb?
  5. Yaqin CD3 Impressions and Internals
  6. svetlana 6D22S heater issues/question
  7. Unity-Gain EL84 Push-Pull Power Buffer
  8. Tube rectifier input capacitance
  9. Borbely hybrid Tube-MOSFET opamp
  10. Help! Tube Rolling
  11. Articles on Global Feedback
  12. Symetrical out low Zout
  13. Any Rimlock PCB sockets out there?
  14. 12SN7 Round Plate Tung Sol--is there such a thing?
  15. Vintage 2a3 tube amp
  16. Balance in CCS Long Tailed Pairs
  17. Audioromy 813 Mains Transformer
  18. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  19. use 120V x 2 for Aikido octal transformer?
  20. P-P O/P Trafo with only 2 tubes insead of 4?
  21. Eico HF-87 refurb
  22. Which SS CCS for the plate load on a 6N1P?
  23. Um, Can I do this?
  24. Eico power supply trouble (hlp plz)
  25. TV live regulator to tube preamp
  26. How to Spec Headphone output transformers
  27. Can I enlarge the mounting hole on Mosfet?
  28. Meng Yue 6P1
  29. Finding triode curves
  30. Critique my schematic 12ay7 linestage
  31. Suppresor Grid used for Feedback?
  32. Power Cascode
  33. Audio grade components
  34. Line Voltage with Yaqin MC-100B amp
  35. heater warmup and b+ delay
  36. BAL to UNBAL DAC buffer
  37. Counterpoint SA-7 - need a pic of the inside
  38. Are Chinese 6N2 the same as Russian 6N2P?
  39. New project; Musical Machine
  40. 4D32 SE amp, a few more questions
  41. Static shock with simple se
  42. Old electrolytic caps ok? MOSCODE 600
  43. Transformer Flux Band Tips and Tricks?
  44. What tube config will get this sound?
  45. On cleaning transformers
  46. My first project ELEKIT TU-870R
  47. DC7 MkII :New Schade 6080 amp.
  48. current driver tube amplifier
  49. A DC coupled headphones amp
  50. Ebay trader zhangsheng
  51. decware kits worth it?
  52. Simple test for transformer frequency response?
  53. Modular guitar tube amp power supply - interface concerns
  54. Vacuum Tube Voltmeters
  55. Power Trans. Load Test
  56. Replacing Cap Across Filter Cap
  57. Regulate HV preamp with floating LM317?
  58. Rogers cadet 3
  59. AC15 Heritage Project w/ Sound Clips
  60. Output impedance tap considerations.....
  61. Amp switch safety load
  62. MF X-10D replica problem
  63. Nice triode
  64. Low gain preamplifier
  65. Improving a Maple Tree Audio PS 2 power supply
  66. Baby Huey-ish phono?
  67. New? Local Feedback Method
  68. PSUD Help Needed: What value do I enter for current?
  69. Question on WE310
  70. How do you calculate choke size in a power supply?
  71. tubecad and tubecad se
  72. 300B amp Power Supply
  73. Adjustable internal Resonance?
  74. B+ Voltage sag for AB1 PP
  75. Maplin
  76. Preamp with an integrated amp
  77. First "boot" in 15 years
  78. Inherited these tubes. Anything interesting?
  79. What application for this tube?
  80. tantalum cap
  81. do I need to upgrade my heater supply to add another tube?
  82. Anyone have curves for a 2C52?
  83. tube-amplifier-shaped-usb-speaker
  84. pre-amp tubes: matching and care
  85. How to self taught about building tube amplifiers
  86. Any pretty good/bad chinese amps?
  87. Couple idiot questions....
  88. Looking for the triode mode of Z759
  89. Couple idiot questions....
  90. push pull 45
  91. Video of hum noise when I switch on the reverb of my Twin Amp
  92. 6sj7 spice model
  93. Help finding parallel 45 SE schematic
  94. filling in the low end, 6bq5 12ax7 circuitry
  95. Dynaco Mark VI
  96. Looking for Sonic Frontiers SFS80 Schematic
  97. CCS or V.REG for OP anode
  98. Yarland FV 34CIII
  99. Looking for OPT steel covers
  100. Damper diodes, center tapped heater, B+
  101. Dynaco ST-35 Newbie cathodyne question
  102. Anyone have valve/tube libraries for express PCB or PCB123?
  103. Looking for the Ultimate Aikido.
  104. CCS loaded DHT cathode follower?
  105. Phono stage with LT1028 MC input
  106. New valve int flash over why ?
  107. Sweep tube suggestions
  108. Amp project output problem
  109. 12AX7,6BQ5 PP Amp Search.
  110. Dynaco MkIII preamp/linestage recommendations?
  111. Can someone please check my PCB layout for this preamp?
  112. looking for easy, low cost guitar amp project
  113. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  114. 1KW power - what do you think?
  115. Bottlehead Filament Choke FC-1 for Push-Pull?
  116. Home James! But first, which transformer?
  117. NAD preamp = 6BQ5 Frankenschteen
  118. Wintersweet highvividity driver circuit
  119. Looking for TT11(CV1501) triode mode curve
  120. Amp switching with 4093/4066. How to add indicator LEDs?
  121. Yaqin MC-10L Blown Fuse
  122. 2a3 amp, progress picture
  123. How do I implement an AZ1 rec tube???
  124. Profit margin on used tube amps
  125. 300B sockets (different question)
  126. How can I modify this grommes little jewel amp for guitar.
  127. tri-amping question (s)
  128. Unity coupled power stage
  129. Acquired A Bunch Of Tubes
  130. Understanding load lines
  131. what would happen if.........?
  132. Testing valves/tubes
  133. 300b socket
  134. Vertical vs. Horizontal does it matter?
  135. Layout thoughts hmm....
  136. ID request, is this a pre?
  137. Anyone got any info on the Tippatone 500 watt amps?
  138. SMPS for Filaments?
  139. Using 6n6pi Push and Pull
  140. Optimum Tube Temperature
  141. Chassis
  142. 5670
  143. will this spice works in real word?
  144. An amplifier for Burning Man
  145. 12AT7,12AU7 Ultra linear cascode
  146. El Cheapo Grande
  147. EL84 Unused pins safe to connect?
  148. 6BQ5/EL84 tube buffer questions
  149. How much power do I need?
  150. Tube buffer/preamp. Where to place voltage divider?
  151. Schematic wanted for VTL Preamp "Maximal"
  152. modified GEC 88-50
  153. Zenith 7B31 Help
  154. Do swingers always buzz when they swing?
  155. 6at6 tube? What can i use it for?
  156. Sovtek 6550WA?
  157. how to make a tube gyrator eq?
  158. Transformer needed or "solid state guy needs help from tube guys"
  159. Differential input, SET output
  160. FFT of PSUD2 output?
  161. Differential push-pull design question
  162. Any EF184 users?
  163. 30P1S - How to use them?
  164. st-70 as good as it gets?
  165. Subbing in a TVC - input load Q
  166. Chinese tubes, new ones or relabeled?
  167. 6AV6 => 12AX7 question
  168. crate vintage club 50 2x12 keeps blowing preamp tubes
  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. Breadboarding/Prototyping - How to and Tips/Tricks
  177. Sub-Miniature Tubes - Low Voltage
  178. True direct-coupled PP amp
  179. "Radical" twist on an all DHT phonostage
  180. input tubes for 300b
  181. JE Labs simple 2a3 filiment tranny, 1 or 2?
  182. ebay Valve Preamps boards for 18 !
  183. Smoothing caps
  184. Spud issues - a little help, please
  185. GLY513 in PS of Simple SE / PP and OTL
  186. Has anyone here built something with this super triode?
  187. What is this part in old radio?
  188. Has anyone done anything with a 5977 sub-mini
  189. Driving EQ from kathode resistor
  190. Understanding CCS vs CVS
  191. Can you believe this!
  192. help with my humming valve amp
  193. Picking tubes for SimpleSE-ish amplifier
  194. 6gk5/ECC88 Phono any comments.
  195. Meng Yue X1 6P1 amp (NOT the mini)
  196. Basic HiFi Tube Amp Layout? Please?
  197. stupid switch question
  198. Max Current of James JS-6123HS Transformer
  199. How do you determine a driver stage?
  200. SUPER cheap nos tubes if you live in california.
  201. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  202. a good tube tester?
  203. Can't get adjustable reg to work
  204. 9 volt tube preamp.
  205. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  206. Equivalent to IXCP10M45S?
  207. Looking for non-DRD 300B using D3a as driver
  208. Akai M8 rebuild/restore/will-this-work?
  209. space charge 12fx8 amp or preamp schematic?
  210. Help with setup to trace UL curves
  211. My KT88 Williamson Amp Build
  212. UV 203A any good for audio ?
  213. What gives with this square wave?
  214. bottlehead paramour PT
  215. DC filament supply without electrolytic(s)?
  216. Looking for R Core power trafo and choke
  217. PP tube amp for bi-amping : above 400 hz
  218. 6N6P question
  219. Integrated valve amplifier : to buy or to build
  220. Lookin for an ST-70-like project
  221. Formula for Zout of diff pair
  222. 6SL7 and Crossovers
  223. Meng Yue: EL34 or 6P1?
  224. Power Transformers and chokes
  225. nos amperex authentic? label doesn't rub off
  226. Software analysis using tube analog circuit Audio Note Kit 1
  227. Webster Amps,Racine Wis.
  228. Help figuring out resistor values
  229. Small (Novel) Tube Rectifiers?
  230. Conrad Johnson ART preamp question.
  231. pd510
  232. i want to build 3D21WB tube PP amp
  233. How to choose an optimal load line for a cathode follwer buffer?
  234. removing sound controlls...
  235. Pentode cathode follower output impedance
  236. Telematic KC401
  237. ebay, 7c kit, worth it?
  238. Mullard 5-10 for guitar use?
  239. Questions: YAQIN MC-100B KT88 together with Spawn Sachiko?
  240. Olson AM-158
  241. Check out my KT88 curves
  242. Just another /\|OOB to Tubes....Need Schem Help
  243. Problem with 832A PP amp
  244. Marantz 8b power transformer
  245. New SET Project
  246. Magnavox Model #OFMC26 Tube Stereo
  247. Balancing Servo
  248. Akai M8 Modding Service Required
  249. 12AX7 basics, some questions on wiring
  250. Hickok Model 600A

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