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  1. Capacitor/Choke value in SET buffer supply? (95 vdc B+)
  2. NJ Tube Auction
  3. pentode buffer
  4. Tube Buffer? 12ax7?
  5. What is this tube?
  6. Kits
  7. Power supply high voltage problems with Melos amp.
  8. 811A Class A2 with Power Drive
  9. Help ID this 12AX7/EL84 Console(?) Amp
  10. Eico HF-86
  11. Marantz 9 Filter CHOKE value??
  12. 10M45s: strange behaviour @ 100mA
  13. LtSpice - Russian tube models
  14. Before I buy KT88's
  15. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  16. adding reverb to Bassman circuit
  17. 300B SE amp: One more one
  18. Already found problem with new amp
  19. LtSpice transformer - confusion
  20. OPUS 5.0 A Modern Mullard
  21. EL34 PP New Design of newbie
  22. Tubelabs SE vs. Simple SE ??
  23. Somebody knows about Lorenz e84l?(real Lorenz)
  24. Aikido Heater PSU help
  25. ecc99 with which Interstage Transformer?
  26. Looking for Audio Research Caps
  27. 2A3 SE Problem
  28. One knob tone control
  29. Tube Base Application ?
  30. The no-brainer project, some questions
  31. schematic request Yarland FV34AIII
  32. SY/Pete Millett Crossover
  33. Please don't stone me. . . .
  34. Golden Tube
  35. BH Curve & OPT choices
  36. Scott Transformers
  37. Identifying transformers
  38. Need Help understanding a triode fed LTP.
  39. How to measure and adjust bias
  40. Another cheap tube amp from China
  41. where to add master volume/gain/tone to Bogen L330?
  42. Another Williamson
  43. Weird EL84 PP behavior
  44. 300B SE Design
  45. Tube/Valve Shop in BERLIN
  46. Aikido buffer/gain selector?
  47. Gaijin friendly audio shop in Tokyo area?
  48. Troubleshooting channel dropout
  49. "groundbus" is this right?
  50. About New Production Tubes
  51. suche JJ E88CC oder 6922 Sovtek in Berlin
  52. 8ohm output transformer with a 4ohm load
  53. Power transformer - good for anything?
  54. Beginner question, swap .047uf for .05uf?
  55. Tetra phono stage
  56. Japanese OPTs
  57. Changing secondary voltage (Uncivilized way)
  58. 4EH7 opinions anyone?
  59. Silvertone 45A tubes....rare variant
  60. single 12AT7 in a tubelab simple se
  61. Finished the "big one"!
  62. CV428 or 5B254M useful?
  63. How about making your own tubes?!
  64. entry level int-amp?
  65. What Cap Is This?
  66. help please with kt-88 ultralinear o/p transformer
  67. A flea thingy that sounds good
  68. Mullard vs. Williamson 60W UL PP amp. Which one?
  69. Need help with PSUD II model
  70. 5v to 2.5v for 2a3 filament
  71. Does 2A3 require a grid stopper?
  72. Hammond ECL86/6GW8 conversion
  73. Connecting two opt's to act as one.
  74. Usefullness of tubes
  75. twisted/isolated/shielded wires?
  76. Feedback question
  77. What tubes for a tube amp?
  78. SE-OPTs
  79. Phase splitting using directly heated tubes?
  80. Change EL84 from Triode to Ultra linear
  81. DC hybrid folded-cascode for Schade
  82. New UK Manufacturer of Valves
  83. Can any here explain the JHS designation?
  84. Too good to be true???
  85. Judging a tube's condition
  86. EF86 tube preamp
  87. Any tips for snap in type caps to replace solder lug cans?
  88. 6EM7 SET Headamp
  89. Are these ALL really EL34 subs?
  90. parallel tubes
  91. Changing the frequency of AC from mains to lower, out of audible range???
  92. Se 6550
  93. New Suppo Audio EL34 amp
  94. 60Watt+ valve design wanted
  95. Interesting tube on e-bay for trans atlantic cable
  96. Need help solving problem on new 2A3 build
  97. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  98. Peavey Classic 30 - Squeal
  99. Where bay M6 lamination (M4,M2) metal for transformer
  100. dynamic pentode screen draw
  101. Tube Sockets
  102. Circuit Ideas for the 815 (martian tube)
  103. Old Tektronix unit, usefull?
  104. my transformer output has a center tap: what do I do with this?
  105. 6AV5GA amp?
  106. Phase splitter idea
  107. Lowering noise in small signal pentodes?
  108. Articles from the past
  109. tube upgrade for vintage orange 120
  110. Help for LTP/CCS plus cathode follower
  111. Conrad Johnson PV-5, my next project, some simple questions
  112. ALTEC 1566a (DiY...if)
  113. Friday Night Fun with a ST-70
  114. Aikido All-In-One Octal Heater Troubles
  115. Guitar tube amp OT Calculation/Winding HELP!
  116. transimpedance amplifier
  117. Jaehong Lee OTL
  118. What tube bases to support for a new tube curve tracer
  119. 6GE5 in driver service for class B P-P
  120. Replace Electrolytics?
  121. Can OT's couple?
  122. tube solid state hybrid guitar amp, looking for schematic
  123. before i drill Simple SE Chassis Seperation of input and output
  124. gates m-3638 preamp
  125. Oversized caps (PS and coupling) in RH84: Problem?
  126. What makes a great concertina triode?
  127. Luxman SQ5A
  128. Spice model with grid current 12ax7
  129. converting a magnavox pp 6v6 in triode mode
  130. 3-leaded russian PIO caps
  131. 6V6 filaments in series
  132. my loud valve preamp
  133. Tranformer for Chinese pre amp (6N11) ?
  134. 1 watt desk speaker
  135. PE06/40 replacement
  136. Salvaged console tube reciever
  137. EF86 swap for 6BQ5 reverb?
  138. Yaqin CD3 Impressions and Internals
  139. svetlana 6D22S heater issues/question
  140. Unity-Gain EL84 Push-Pull Power Buffer
  141. Tube rectifier input capacitance
  142. Borbely hybrid Tube-MOSFET opamp
  143. Help! Tube Rolling
  144. Articles on Global Feedback
  145. Symetrical out low Zout
  146. Any Rimlock PCB sockets out there?
  147. 12SN7 Round Plate Tung Sol--is there such a thing?
  148. Vintage 2a3 tube amp
  149. Balance in CCS Long Tailed Pairs
  150. Audioromy 813 Mains Transformer
  151. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  152. use 120V x 2 for Aikido octal transformer?
  153. P-P O/P Trafo with only 2 tubes insead of 4?
  154. Eico HF-87 refurb
  155. Which SS CCS for the plate load on a 6N1P?
  156. Um, Can I do this?
  157. Eico power supply trouble (hlp plz)
  158. TV live regulator to tube preamp
  159. How to Spec Headphone output transformers
  160. Can I enlarge the mounting hole on Mosfet?
  161. Meng Yue 6P1
  162. Finding triode curves
  163. Critique my schematic 12ay7 linestage
  164. Suppresor Grid used for Feedback?
  165. Power Cascode
  166. Audio grade components
  167. Line Voltage with Yaqin MC-100B amp
  168. heater warmup and b+ delay
  169. BAL to UNBAL DAC buffer
  170. Counterpoint SA-7 - need a pic of the inside
  171. Are Chinese 6N2 the same as Russian 6N2P?
  172. New project; Musical Machine
  173. 4D32 SE amp, a few more questions
  174. Static shock with simple se
  175. Old electrolytic caps ok? MOSCODE 600
  176. Transformer Flux Band Tips and Tricks?
  177. What tube config will get this sound?
  178. On cleaning transformers
  179. My first project ELEKIT TU-870R
  180. DC7 MkII :New Schade 6080 amp.
  181. current driver tube amplifier
  182. A DC coupled headphones amp
  183. Ebay trader zhangsheng
  184. decware kits worth it?
  185. Simple test for transformer frequency response?
  186. Modular guitar tube amp power supply - interface concerns
  187. Vacuum Tube Voltmeters
  188. Power Trans. Load Test
  189. Replacing Cap Across Filter Cap
  190. Regulate HV preamp with floating LM317?
  191. Rogers cadet 3
  192. AC15 Heritage Project w/ Sound Clips
  193. Output impedance tap considerations.....
  194. Amp switch safety load
  195. MF X-10D replica problem
  196. Nice triode
  197. Low gain preamplifier
  198. Improving a Maple Tree Audio PS 2 power supply
  199. Baby Huey-ish phono?
  200. New? Local Feedback Method
  201. PSUD Help Needed: What value do I enter for current?
  202. Question on WE310
  203. How do you calculate choke size in a power supply?
  204. tubecad and tubecad se
  205. 300B amp Power Supply
  206. Adjustable internal Resonance?
  207. B+ Voltage sag for AB1 PP
  208. Maplin
  209. Preamp with an integrated amp
  210. First "boot" in 15 years
  211. Inherited these tubes. Anything interesting?
  212. What application for this tube?
  213. tantalum cap
  214. do I need to upgrade my heater supply to add another tube?
  215. Anyone have curves for a 2C52?
  216. tube-amplifier-shaped-usb-speaker
  217. pre-amp tubes: matching and care
  218. How to self taught about building tube amplifiers
  219. Any pretty good/bad chinese amps?
  220. Couple idiot questions....
  221. Looking for the triode mode of Z759
  222. Couple idiot questions....
  223. push pull 45
  224. Video of hum noise when I switch on the reverb of my Twin Amp
  225. 6sj7 spice model
  226. Help finding parallel 45 SE schematic
  227. filling in the low end, 6bq5 12ax7 circuitry
  228. Dynaco Mark VI
  229. Looking for Sonic Frontiers SFS80 Schematic
  230. CCS or V.REG for OP anode
  231. Yarland FV 34CIII
  232. Looking for OPT steel covers
  233. Damper diodes, center tapped heater, B+
  234. Dynaco ST-35 Newbie cathodyne question
  235. Anyone have valve/tube libraries for express PCB or PCB123?
  236. Looking for the Ultimate Aikido.
  237. CCS loaded DHT cathode follower?
  238. Phono stage with LT1028 MC input
  239. New valve int flash over why ?
  240. Sweep tube suggestions
  241. Amp project output problem
  242. 12AX7,6BQ5 PP Amp Search.
  243. Dynaco MkIII preamp/linestage recommendations?
  244. Can someone please check my PCB layout for this preamp?
  245. looking for easy, low cost guitar amp project
  246. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  247. 1KW power - what do you think?
  248. Bottlehead Filament Choke FC-1 for Push-Pull?
  249. Home James! But first, which transformer?
  250. NAD preamp = 6BQ5 Frankenschteen

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