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  1. 1Gohm or higher resistor ...
  2. Grounding check for SE 300B amp
  3. Suggest me a build for HD600 headphones
  4. 6BQ5 Screen Voltage Regulator
  5. 6SN7 Tubes
  6. My first tube Amplifier VT4C DIY record
  7. Amplifier output wattage test
  8. Troubble shooting help please.....
  9. Heater Wiring
  10. 220/110 step down in reverse ... and more
  11. Input Level Devil please help
  12. Soft start for a preamp?
  13. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  14. Using one KT77 and one EL34 per side?
  15. Help identifying transformer wires.
  16. tube pre and tube power amp
  17. Spice Models for Tubes w Screen Grid by Gurski
  18. Theremin project needs some help!
  19. Transformer abuse or other use
  20. aikido heater voltage
  21. HY51Z datasheet, help !!!
  22. 6L6 amp with unique phase splitter - check my math
  23. Dynaco A451 Output Transformer
  24. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  25. 6AU6 preamp problem
  26. Help identifying a Telefunken(?) tube...
  27. UCC85 and e-pay
  28. Lundahl LL1676 - missing data
  29. valve phono pre-amp HELP needed
  30. Preamp pcb
  31. ECL82 pp guitar amp project
  32. Strange Problem In Tube Amp Build
  33. Output transformer question
  34. Replacing ECL86/6GW8 to PCL86(14GW8)???
  35. On or Off?
  36. Neg-Feedback into Grid of gain stage instead of cathode?
  37. Accuphase F-25 Japanese manual translation help!
  38. Negative supply with CT tranny
  39. E130L SE again
  40. tony builds a 7N7 preamp
  41. Tango 10429 78% Nickle Output Transformer?
  42. Bias for Ipod Input
  43. What about this driver????
  44. allen organ amp 75
  45. Needs help Tubezone Poseidon
  46. Lightbulb trick on filament circuit?
  47. AMC CVT3030a Help for repair
  48. TF110-48/UL in the UK?
  49. hum in pas2
  50. Aikido Cathode Follwer Question
  51. 12AX7 tube preamplifier for bass guitar (Need help)
  52. Fuses...what's the deal?
  53. Question Regarding a Partial Feedback 807 SE
  54. Preamp issue on Fender Blues Jr.
  55. Leftover transformers
  56. Newbie "In Search of help"
  57. ELL80/ECLL800 Cathode follower
  58. The "Tube" bookshelf
  59. knight KG-240? low output help
  60. Reverb trouble-Schematic reading help needed
  61. Vacuum tube VCO
  62. JE lab 2a3 , fizzy, squeal in one channel, help
  63. Trouble with a DIY EL34 Tube Amp Kit
  64. SPICE Transformer Model Spreadsheet
  65. Choosing the right triode as a Phase Inverter
  66. toob noob with GE 5670 and I'd like to do something with it. Help?
  67. my first tube amp, no tubes...
  68. Enough heat to power my CD player...
  69. My first tube amp: 6C33C
  70. S5 16LS kit as a first DIY tube build?
  71. lady day we 91 psu mod help
  72. On days like these ...
  73. The Magnetron - A Low Noise, Long Life Amplifier????
  74. 6M11's
  75. DC coupled 300B idea - request for comments
  76. Fisher bias
  77. How does anode voltage swing to twice HT voltage?
  78. Can a 7625 Ceramic Planar Triode be soldered ?
  79. AMI "DD" Project: 6L6
  80. Plate loading questions
  81. EZ81 rectifier
  82. PY500a
  83. Tube Regulator Thoughts?
  84. Fully balanced from cartridge to loudspeaker - a little help needed!
  85. OPT on the speaker side?
  86. tube circuit conversions?
  87. Current inrush limiter suggestions
  88. Repair of Philips EL6416 amplifiers.
  89. GU-19 In priboi
  90. Duncan Amps PSU Designer II
  91. Troubleshoot help for vibrato type problem
  92. using existing pre with this circuit
  93. Laney Tube Fusion 200 series 2 footswitch
  94. Antek AT-070L Specs
  95. Unused tube sections
  96. Rewire Rectifier Sockets for Tube Substitution
  97. Shuguang 300BC
  98. Sn/Pb S-Sn/Cu ...
  99. What and Where is BAF?
  100. CCS plate follower 12bh7 schematic needed pls
  101. 300B DC heaters confusion
  102. Blue Tube Red Plating = Help!
  103. Tube bass preamplifier power supply (Need Help)
  104. Opera Consonance M500 mkii
  105. 6AC7EH Better but different
  106. For that hard to find 5HY 2 amp choke...
  107. Cleaning up an old ST-70 chassis
  108. Accuphase P250 Amplifier Schematic Requred
  109. Pls Help me, this 6C33C pp Schematic is OK?
  110. Loud Noise due to NFB
  111. NAMM Zoo 2011
  112. Recommended O'Scope Reading?
  113. Damage to valve amp when powered up but disconnected to speakers?
  114. preferred resistor type
  115. use more then 'maximum capacitance' after tube rectifier
  116. Headphone Tube Amp D3a
  117. Dared 5.1 tube amp
  118. Designing Transformers with J.C.Maxwell
  119. Cathode resistor calc?
  120. Selector switch question
  121. good circuit to use with Grounded Grid Pre
  122. JJ KT88 tubes glowing bright yellow.
  123. Transistorised-Tubed-Magnetic Amplifier
  124. ST-35 Tube Brands
  125. Where you buy iron transformer core for DIY audio transformer
  126. Improve this SP-11 HV supply?
  127. More Antek Iron
  128. Edcor Transformer Specs
  129. Volume control resistance question? Step Attenuator?
  130. Minimum space between 6V6 tube in Push-Pull Amp
  131. GE Jan 6550a for SET amp?
  132. Chassis mount connector strip
  133. Transformer winding - mysterious!
  134. can anyone identify theses OT markings?
  135. Excessive hum with 1960's amp.
  136. Western Electric/Hickock 600A
  137. Pete Millett Uniamp
  138. cathode resistor sudden rising value on 7591
  139. 7591 cathode resistor unstable
  140. David
  141. Looking for a DHT Pre & Phono design / ideas please
  142. Hi, New member just bought k272a kit from Oatley
  143. Building an amp from scratch - what features would i want
  144. Lafayette LA215 voltage problem !
  145. 12ax7: How to maximize output?
  146. Low voltage tube pre-amp for T-amp
  147. Hybride bipolair amp
  148. Single end amp power supply upgrade
  149. Pentode curves - how to find operating point withoud going crazy?
  150. 6922 into 6H30 socket ?
  151. Headwize 6N1P OTL headphone amp having hum
  152. Need help to calculate R in a CCS!
  153. #40-LL1660-4*2A3
  154. Help with stereo tube amp design from parts
  155. Decoupling cap hum
  156. Plate chokes
  157. Tube output protection
  158. 12EN6 in triode mode...fine ???
  159. used 12at7
  160. Need advise with NFB loop
  161. 1964 Amplifier!!
  162. Very basic grid question????
  163. 12AX7 PULSE
  164. short article about operating points
  165. How is an amp's output measured?
  166. current/cathode feedback
  167. 6N23P, transistor PP hybrid amp project.
  168. Transformer choice for DC heater supply?
  169. Help me with i177 tubetester
  170. HeathKit Euw-15 Tube power Supply failure.
  171. Got unknown tube preamp board, need help!
  172. Ergo-Ella + Budget AVC Do-It-Box
  173. Phono pre amp question.
  174. Zener regulation for fixed-bias supply
  175. hot transformer
  176. H. H. Scott 299C output transformers
  177. decisions fostex and the DIY-K12G budget system..
  178. LTSpice GU19 GU29 6R3S
  179. power transfo as HT choke
  180. Dummy newb needs help with Bogen VP17X
  181. Modding the SAKUA AV200
  182. Anybody use 841s(VT-51)?
  183. Help me make use of these transformers
  184. Wiring Buck Transformer with GE transformer Help!
  185. audio research sp9
  186. WE417A Valve Preamplifier
  187. Hi-Fi Tube Amplifier and more
  188. Radford SC-22 Restoration - Input Transistor Biasing Question
  189. Tube Tester
  190. Looking for off-the-wall oil caps
  191. 805 MonoBlock SE Amp Kit?
  192. Back to back toroids
  193. 6AU6 in CCS circuits
  194. Morgan Jones' RIAA Pre-Amp
  195. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  196. Building an Aikido LV for a headphone amp
  197. What to do with a 6L6-GC?
  198. loose plate caps, hi temp glue???
  199. Power supply question
  200. RCA Line Input Shielding Technique Help
  201. Randall shutting down
  202. Grommes 260A DIY report, questions, suggestions
  203. Line out from tube organ
  204. Minimum Gain Stage Rg Value?
  205. One-half 6H30
  206. Novice In Over His Head
  207. Twisted Heater Wires
  208. Guitar amplifier PSU hum woes
  209. Little Dot MK III - noisy / oscillation?
  210. Rundmaus at work - PP1C without sand
  211. Power transformer for Firefly Amp?
  212. where to start? 2 channel SS/tube bass preamp
  213. mr liang 845
  214. RH84 (EL84) Choke etc...
  215. Gyrator Loaded 12b4A: The Latest Version.
  216. Wood Trimmed Chassis
  217. Sansui BA-303
  218. Stepped Attenuator - Ebay Seiden DACT Goldpoint Elma Shallco?
  219. hybrid amp with dht or idht inputs?
  220. Balanced to Unbalanced Line Conversion
  221. Headphone amplifier with TH100 tube
  222. Happy New Year - A New Amp to Argue About...
  223. fee-nix, the desktop amp
  224. Any thoughts on what damage I did?
  225. So. Cal. Ham Festival?
  226. zener LTSpice model
  227. Mini-console Schematic
  228. Will this circuit work Ok?
  229. tube CCS below cathodes, startup issues?
  230. Why the wimpy 300B operating points?
  231. can a cathode follower drive a tone stack and an effects loop?
  232. Bench supply ideas
  233. A Newbie Tx Question
  234. Volume Control Help!
  235. Could anyone opine on this circuit?
  236. 5U4 Rectifier. Maximum filter cap value?
  237. Grounding outputs?
  238. Happy holidays folks.
  239. Thermionic diode
  240. Lafayette amp arcing Rectifier problem
  241. ECF801 any good for audio
  242. Harman Kardon Citation II PI question
  243. 6N1P
  244. Need advice for a 93 Fender "The Twin"
  245. Shorted secondary windings of transformer
  246. Toasted my rectifier - need some pointers to troubleshoot
  247. Parallel amp connection to speakers, SS + tube
  248. Loose pin on a JJ 300B
  249. Measuring milliamp with Fluke 771 Clamp Meter Question?
  250. Spice - and Sting is nowhere to be seen...

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