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  1. Ultra Low Cost 6P1P Push Pull Schematic,PCB
  2. adding reverb to Bassman circuit
  3. 300B SE amp: One more one
  4. Already found problem with new amp
  5. LtSpice transformer - confusion
  6. OPUS 5.0 A Modern Mullard
  7. EL34 PP New Design of newbie
  8. Tubelabs SE vs. Simple SE ??
  9. Somebody knows about Lorenz e84l?(real Lorenz)
  10. Aikido Heater PSU help
  11. ecc99 with which Interstage Transformer?
  12. Looking for Audio Research Caps
  13. 2A3 SE Problem
  14. One knob tone control
  15. Tube Base Application ?
  16. The no-brainer project, some questions
  17. schematic request Yarland FV34AIII
  18. SY/Pete Millett Crossover
  19. Please don't stone me. . . .
  20. Golden Tube
  21. BH Curve & OPT choices
  22. Scott Transformers
  23. Identifying transformers
  24. Need Help understanding a triode fed LTP.
  25. How to measure and adjust bias
  26. Another cheap tube amp from China
  27. where to add master volume/gain/tone to Bogen L330?
  28. Another Williamson
  29. Weird EL84 PP behavior
  30. 300B SE Design
  31. Tube/Valve Shop in BERLIN
  32. Aikido buffer/gain selector?
  33. Gaijin friendly audio shop in Tokyo area?
  34. Troubleshooting channel dropout
  35. "groundbus" is this right?
  36. About New Production Tubes
  37. suche JJ E88CC oder 6922 Sovtek in Berlin
  38. 8ohm output transformer with a 4ohm load
  39. Power transformer - good for anything?
  40. Beginner question, swap .047uf for .05uf?
  41. Tetra phono stage
  42. Japanese OPTs
  43. Changing secondary voltage (Uncivilized way)
  44. 4EH7 opinions anyone?
  45. Silvertone 45A tubes....rare variant
  46. single 12AT7 in a tubelab simple se
  47. Finished the "big one"!
  48. CV428 or 5B254M useful?
  49. How about making your own tubes?!
  50. entry level int-amp?
  51. What Cap Is This?
  52. help please with kt-88 ultralinear o/p transformer
  53. A flea thingy that sounds good
  54. Mullard vs. Williamson 60W UL PP amp. Which one?
  55. Need help with PSUD II model
  56. 5v to 2.5v for 2a3 filament
  57. Does 2A3 require a grid stopper?
  58. Hammond ECL86/6GW8 conversion
  59. Connecting two opt's to act as one.
  60. Usefullness of tubes
  61. twisted/isolated/shielded wires?
  62. Feedback question
  63. What tubes for a tube amp?
  64. SE-OPTs
  65. Phase splitting using directly heated tubes?
  66. Change EL84 from Triode to Ultra linear
  67. DC hybrid folded-cascode for Schade
  68. New UK Manufacturer of Valves
  69. Can any here explain the JHS designation?
  70. Too good to be true???
  71. Judging a tube's condition
  72. EF86 tube preamp
  73. Any tips for snap in type caps to replace solder lug cans?
  74. 6EM7 SET Headamp
  75. Are these ALL really EL34 subs?
  76. parallel tubes
  77. Changing the frequency of AC from mains to lower, out of audible range???
  78. Se 6550
  79. New Suppo Audio EL34 amp
  80. 60Watt+ valve design wanted
  81. Interesting tube on e-bay for trans atlantic cable
  82. Need help solving problem on new 2A3 build
  83. Tube and Passive Preamps-Auto Transformers for Attenuators/Volume Control - Overview
  84. Peavey Classic 30 - Squeal
  85. Where bay M6 lamination (M4,M2) metal for transformer
  86. dynamic pentode screen draw
  87. Tube Sockets
  88. Circuit Ideas for the 815 (martian tube)
  89. Old Tektronix unit, usefull?
  90. my transformer output has a center tap: what do I do with this?
  91. 6AV5GA amp?
  92. Phase splitter idea
  93. Lowering noise in small signal pentodes?
  94. Articles from the past
  95. tube upgrade for vintage orange 120
  96. Help for LTP/CCS plus cathode follower
  97. Conrad Johnson PV-5, my next project, some simple questions
  98. ALTEC 1566a (DiY...if)
  99. Friday Night Fun with a ST-70
  100. Aikido All-In-One Octal Heater Troubles
  101. Guitar tube amp OT Calculation/Winding HELP!
  102. transimpedance amplifier
  103. Jaehong Lee OTL
  104. What tube bases to support for a new tube curve tracer
  105. 6GE5 in driver service for class B P-P
  106. Replace Electrolytics?
  107. Can OT's couple?
  108. tube solid state hybrid guitar amp, looking for schematic
  109. before i drill Simple SE Chassis Seperation of input and output
  110. gates m-3638 preamp
  111. Oversized caps (PS and coupling) in RH84: Problem?
  112. What makes a great concertina triode?
  113. Luxman SQ5A
  114. Spice model with grid current 12ax7
  115. converting a magnavox pp 6v6 in triode mode
  116. 3-leaded russian PIO caps
  117. 6V6 filaments in series
  118. my loud valve preamp
  119. Tranformer for Chinese pre amp (6N11) ?
  120. 1 watt desk speaker
  121. PE06/40 replacement
  122. Salvaged console tube reciever
  123. EF86 swap for 6BQ5 reverb?
  124. Yaqin CD3 Impressions and Internals
  125. svetlana 6D22S heater issues/question
  126. Unity-Gain EL84 Push-Pull Power Buffer
  127. Tube rectifier input capacitance
  128. Borbely hybrid Tube-MOSFET opamp
  129. Help! Tube Rolling
  130. Articles on Global Feedback
  131. Symetrical out low Zout
  132. Any Rimlock PCB sockets out there?
  133. 12SN7 Round Plate Tung Sol--is there such a thing?
  134. Vintage 2a3 tube amp
  135. Balance in CCS Long Tailed Pairs
  136. Audioromy 813 Mains Transformer
  137. Hello all, Im new from Spain, sorry for my english, and problems with my music angel
  138. use 120V x 2 for Aikido octal transformer?
  139. P-P O/P Trafo with only 2 tubes insead of 4?
  140. Eico HF-87 refurb
  141. Which SS CCS for the plate load on a 6N1P?
  142. Um, Can I do this?
  143. Eico power supply trouble (hlp plz)
  144. TV live regulator to tube preamp
  145. How to Spec Headphone output transformers
  146. Can I enlarge the mounting hole on Mosfet?
  147. Meng Yue 6P1
  148. Finding triode curves
  149. Critique my schematic 12ay7 linestage
  150. Suppresor Grid used for Feedback?
  151. Power Cascode
  152. Audio grade components
  153. Line Voltage with Yaqin MC-100B amp
  154. heater warmup and b+ delay
  155. BAL to UNBAL DAC buffer
  156. Counterpoint SA-7 - need a pic of the inside
  157. Are Chinese 6N2 the same as Russian 6N2P?
  158. New project; Musical Machine
  159. 4D32 SE amp, a few more questions
  160. Static shock with simple se
  161. Old electrolytic caps ok? MOSCODE 600
  162. Transformer Flux Band Tips and Tricks?
  163. What tube config will get this sound?
  164. On cleaning transformers
  165. My first project ELEKIT TU-870R
  166. DC7 MkII :New Schade 6080 amp.
  167. current driver tube amplifier
  168. A DC coupled headphones amp
  169. Ebay trader zhangsheng
  170. decware kits worth it?
  171. Simple test for transformer frequency response?
  172. Modular guitar tube amp power supply - interface concerns
  173. Vacuum Tube Voltmeters
  174. Power Trans. Load Test
  175. Replacing Cap Across Filter Cap
  176. Regulate HV preamp with floating LM317?
  177. Rogers cadet 3
  178. AC15 Heritage Project w/ Sound Clips
  179. Output impedance tap considerations.....
  180. Amp switch safety load
  181. MF X-10D replica problem
  182. Nice triode
  183. Low gain preamplifier
  184. Improving a Maple Tree Audio PS 2 power supply
  185. Baby Huey-ish phono?
  186. New? Local Feedback Method
  187. PSUD Help Needed: What value do I enter for current?
  188. Question on WE310
  189. How do you calculate choke size in a power supply?
  190. tubecad and tubecad se
  191. 300B amp Power Supply
  192. Adjustable internal Resonance?
  193. B+ Voltage sag for AB1 PP
  194. Maplin
  195. Preamp with an integrated amp
  196. First "boot" in 15 years
  197. Inherited these tubes. Anything interesting?
  198. What application for this tube?
  199. tantalum cap
  200. do I need to upgrade my heater supply to add another tube?
  201. Anyone have curves for a 2C52?
  202. tube-amplifier-shaped-usb-speaker
  203. pre-amp tubes: matching and care
  204. How to self taught about building tube amplifiers
  205. Any pretty good/bad chinese amps?
  206. Couple idiot questions....
  207. Looking for the triode mode of Z759
  208. Couple idiot questions....
  209. push pull 45
  210. Video of hum noise when I switch on the reverb of my Twin Amp
  211. 6sj7 spice model
  212. Help finding parallel 45 SE schematic
  213. filling in the low end, 6bq5 12ax7 circuitry
  214. Dynaco Mark VI
  215. Looking for Sonic Frontiers SFS80 Schematic
  216. CCS or V.REG for OP anode
  217. Yarland FV 34CIII
  218. Looking for OPT steel covers
  219. Damper diodes, center tapped heater, B+
  220. Dynaco ST-35 Newbie cathodyne question
  221. Anyone have valve/tube libraries for express PCB or PCB123?
  222. Looking for the Ultimate Aikido.
  223. CCS loaded DHT cathode follower?
  224. Phono stage with LT1028 MC input
  225. New valve int flash over why ?
  226. Sweep tube suggestions
  227. Amp project output problem
  228. 12AX7,6BQ5 PP Amp Search.
  229. Dynaco MkIII preamp/linestage recommendations?
  230. Can someone please check my PCB layout for this preamp?
  231. looking for easy, low cost guitar amp project
  232. UK EBAY - 100W Marshall / Fender Clone Transformer Set
  233. 1KW power - what do you think?
  234. Bottlehead Filament Choke FC-1 for Push-Pull?
  235. Home James! But first, which transformer?
  236. NAD preamp = 6BQ5 Frankenschteen
  237. Wintersweet highvividity driver circuit
  238. Looking for TT11(CV1501) triode mode curve
  239. Amp switching with 4093/4066. How to add indicator LEDs?
  240. Yaqin MC-10L Blown Fuse
  241. 2a3 amp, progress picture
  242. How do I implement an AZ1 rec tube???
  243. Profit margin on used tube amps
  244. 300B sockets (different question)
  245. How can I modify this grommes little jewel amp for guitar.
  246. tri-amping question (s)
  247. Unity coupled power stage
  248. Acquired A Bunch Of Tubes
  249. Understanding load lines
  250. what would happen if.........?

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