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  1. Peavey Classic 30 - Squeal
  2. Where bay M6 lamination (M4,M2) metal for transformer
  3. dynamic pentode screen draw
  4. Tube Sockets
  5. Circuit Ideas for the 815 (martian tube)
  6. Old Tektronix unit, usefull?
  7. my transformer output has a center tap: what do I do with this?
  8. 6AV5GA amp?
  9. Phase splitter idea
  10. Lowering noise in small signal pentodes?
  11. Articles from the past
  12. tube upgrade for vintage orange 120
  13. Help for LTP/CCS plus cathode follower
  14. Conrad Johnson PV-5, my next project, some simple questions
  15. ALTEC 1566a (DiY...if)
  16. Friday Night Fun with a ST-70
  17. Aikido All-In-One Octal Heater Troubles
  18. Guitar tube amp OT Calculation/Winding HELP!
  19. transimpedance amplifier
  20. Jaehong Lee OTL
  21. What tube bases to support for a new tube curve tracer
  22. 6GE5 in driver service for class B P-P
  23. Replace Electrolytics?
  24. Can OT's couple?
  25. tube solid state hybrid guitar amp, looking for schematic
  26. before i drill Simple SE Chassis Seperation of input and output
  27. gates m-3638 preamp
  28. Oversized caps (PS and coupling) in RH84: Problem?
  29. What makes a great concertina triode?
  30. Luxman SQ5A
  31. Spice model with grid current 12ax7
  32. converting a magnavox pp 6v6 in triode mode
  33. 3-leaded russian PIO caps
  34. 6V6 filaments in series
  35. my loud valve preamp
  36. Tranformer for Chinese pre amp (6N11) ?
  37. 1 watt desk speaker
  38. PE06/40 replacement
  39. Salvaged console tube reciever
  40. EF86 swap for 6BQ5 reverb?
  41. Yaqin CD3 Impressions and Internals
  42. svetlana 6D22S heater issues/question
  43. Unity-Gain EL84 Push-Pull Power Buffer
  44. Tube rectifier input capacitance
  45. Borbely hybrid Tube-MOSFET opamp
  46. Help! Tube Rolling
  47. Articles on Global Feedback
  48. Symetrical out low Zout
  49. Any Rimlock PCB sockets out there?
  50. 12SN7 Round Plate Tung Sol--is there such a thing?
  51. Vintage 2a3 tube amp
  52. Balance in CCS Long Tailed Pairs
  53. Audioromy 813 Mains Transformer
  54. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  55. use 120V x 2 for Aikido octal transformer?
  56. P-P O/P Trafo with only 2 tubes insead of 4?
  57. Eico HF-87 refurb
  58. Which SS CCS for the plate load on a 6N1P?
  59. Um, Can I do this?
  60. Eico power supply trouble (hlp plz)
  61. TV live regulator to tube preamp
  62. How to Spec Headphone output transformers
  63. Can I enlarge the mounting hole on Mosfet?
  64. Meng Yue 6P1
  65. Finding triode curves
  66. Critique my schematic 12ay7 linestage
  67. Suppresor Grid used for Feedback?
  68. Power Cascode
  69. Audio grade components
  70. Line Voltage with Yaqin MC-100B amp
  71. heater warmup and b+ delay
  72. BAL to UNBAL DAC buffer
  73. Counterpoint SA-7 - need a pic of the inside
  74. Are Chinese 6N2 the same as Russian 6N2P?
  75. New project; Musical Machine
  76. 4D32 SE amp, a few more questions
  77. Static shock with simple se
  78. Old electrolytic caps ok? MOSCODE 600
  79. Transformer Flux Band Tips and Tricks?
  80. What tube config will get this sound?
  81. On cleaning transformers
  82. My first project ELEKIT TU-870R
  83. DC7 MkII :New Schade 6080 amp.
  84. current driver tube amplifier
  85. A DC coupled headphones amp
  86. Ebay trader zhangsheng
  87. decware kits worth it?
  88. Simple test for transformer frequency response?
  89. Modular guitar tube amp power supply - interface concerns
  90. Vacuum Tube Voltmeters
  91. Power Trans. Load Test
  92. Replacing Cap Across Filter Cap
  93. Regulate HV preamp with floating LM317?
  94. Rogers cadet 3
  95. AC15 Heritage Project w/ Sound Clips
  96. Output impedance tap considerations.....
  97. Amp switch safety load
  98. MF X-10D replica problem
  99. Nice triode
  100. Low gain preamplifier
  101. Improving a Maple Tree Audio PS 2 power supply
  102. Baby Huey-ish phono?
  103. New? Local Feedback Method
  104. PSUD Help Needed: What value do I enter for current?
  105. Question on WE310
  106. How do you calculate choke size in a power supply?
  107. tubecad and tubecad se
  108. 300B amp Power Supply
  109. Adjustable internal Resonance?
  110. B+ Voltage sag for AB1 PP
  111. Maplin
  112. Preamp with an integrated amp
  113. First "boot" in 15 years
  114. Inherited these tubes. Anything interesting?
  115. What application for this tube?
  116. tantalum cap
  117. do I need to upgrade my heater supply to add another tube?
  118. Anyone have curves for a 2C52?
  119. tube-amplifier-shaped-usb-speaker
  120. pre-amp tubes: matching and care
  121. How to self taught about building tube amplifiers
  122. Any pretty good/bad chinese amps?
  123. Couple idiot questions....
  124. Looking for the triode mode of Z759
  125. Couple idiot questions....
  126. push pull 45
  127. Video of hum noise when I switch on the reverb of my Twin Amp
  128. 6sj7 spice model
  129. Help finding parallel 45 SE schematic
  130. filling in the low end, 6bq5 12ax7 circuitry
  131. Dynaco Mark VI
  132. Looking for Sonic Frontiers SFS80 Schematic
  133. CCS or V.REG for OP anode
  134. Yarland FV 34CIII
  135. Looking for OPT steel covers
  136. Damper diodes, center tapped heater, B+
  137. Dynaco ST-35 Newbie cathodyne question
  138. Anyone have valve/tube libraries for express PCB or PCB123?
  139. Looking for the Ultimate Aikido.
  140. CCS loaded DHT cathode follower?
  141. Phono stage with LT1028 MC input
  142. New valve int flash over why ?
  143. Sweep tube suggestions
  144. Amp project output problem
  145. 12AX7,6BQ5 PP Amp Search.
  146. Dynaco MkIII preamp/linestage recommendations?
  147. Can someone please check my PCB layout for this preamp?
  148. looking for easy, low cost guitar amp project
  149. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  150. 1KW power - what do you think?
  151. Bottlehead Filament Choke FC-1 for Push-Pull?
  152. Home James! But first, which transformer?
  153. NAD preamp = 6BQ5 Frankenschteen
  154. Wintersweet highvividity driver circuit
  155. Looking for TT11(CV1501) triode mode curve
  156. Amp switching with 4093/4066. How to add indicator LEDs?
  157. Yaqin MC-10L Blown Fuse
  158. 2a3 amp, progress picture
  159. How do I implement an AZ1 rec tube???
  160. Profit margin on used tube amps
  161. 300B sockets (different question)
  162. How can I modify this grommes little jewel amp for guitar.
  163. tri-amping question (s)
  164. Unity coupled power stage
  165. Acquired A Bunch Of Tubes
  166. Understanding load lines
  167. what would happen if.........?
  168. Testing valves/tubes
  169. 300b socket
  170. Vertical vs. Horizontal does it matter?
  171. Layout thoughts hmm....
  172. ID request, is this a pre?
  173. Anyone got any info on the Tippatone 500 watt amps?
  174. SMPS for Filaments?
  175. Using 6n6pi Push and Pull
  176. Optimum Tube Temperature
  177. Chassis
  178. 5670
  179. will this spice works in real word?
  180. An amplifier for Burning Man
  181. 12AT7,12AU7 Ultra linear cascode
  182. El Cheapo Grande
  183. EL84 Unused pins safe to connect?
  184. 6BQ5/EL84 tube buffer questions
  185. How much power do I need?
  186. Tube buffer/preamp. Where to place voltage divider?
  187. Schematic wanted for VTL Preamp "Maximal"
  188. modified GEC 88-50
  189. Zenith 7B31 Help
  190. Do swingers always buzz when they swing?
  191. 6at6 tube? What can i use it for?
  192. Sovtek 6550WA?
  193. how to make a tube gyrator eq?
  194. Transformer needed or "solid state guy needs help from tube guys"
  195. Differential input, SET output
  196. FFT of PSUD2 output?
  197. Differential push-pull design question
  198. Any EF184 users?
  199. 30P1S - How to use them?
  200. st-70 as good as it gets?
  201. Subbing in a TVC - input load Q
  202. Chinese tubes, new ones or relabeled?
  203. 6AV6 => 12AX7 question
  204. crate vintage club 50 2x12 keeps blowing preamp tubes
  205. 845 & 300b tubes
  206. Sourcing sockets and plugs for power supply umbilicals
  207. Sub mini history question ...
  208. 6DX8 Amp for Headphones and Low Volume Needs
  209. Surplus Voltage Solution
  210. Tube rolling in the Triode Electronics 6au6/12au7 driver board
  211. RCA mystery tube help
  212. Breadboarding/Prototyping - How to and Tips/Tricks
  213. Sub-Miniature Tubes - Low Voltage
  214. True direct-coupled PP amp
  215. "Radical" twist on an all DHT phonostage
  216. input tubes for 300b
  217. JE Labs simple 2a3 filiment tranny, 1 or 2?
  218. ebay Valve Preamps boards for 18 !
  219. Smoothing caps
  220. Spud issues - a little help, please
  221. GLY513 in PS of Simple SE / PP and OTL
  222. Has anyone here built something with this super triode?
  223. What is this part in old radio?
  224. Has anyone done anything with a 5977 sub-mini
  225. Driving EQ from kathode resistor
  226. Understanding CCS vs CVS
  227. Can you believe this!
  228. help with my humming valve amp
  229. Picking tubes for SimpleSE-ish amplifier
  230. 6gk5/ECC88 Phono any comments.
  231. Meng Yue X1 6P1 amp (NOT the mini)
  232. Basic HiFi Tube Amp Layout? Please?
  233. stupid switch question
  234. Max Current of James JS-6123HS Transformer
  235. How do you determine a driver stage?
  236. SUPER cheap nos tubes if you live in california.
  237. 8ohm resistor in series with 8ohm speakers for a 16ohm OT?
  238. a good tube tester?
  239. Can't get adjustable reg to work
  240. 9 volt tube preamp.
  241. DCD power amplifier: 2A3/d3a CCS coupled: new topology?
  242. Equivalent to IXCP10M45S?
  243. Looking for non-DRD 300B using D3a as driver
  244. Akai M8 rebuild/restore/will-this-work?
  245. space charge 12fx8 amp or preamp schematic?
  246. Help with setup to trace UL curves
  247. My KT88 Williamson Amp Build
  248. UV 203A any good for audio ?
  249. What gives with this square wave?
  250. bottlehead paramour PT

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