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  1. 33 in triode mode...any experience ?
  2. Help with Decware Zen EL84 SET
  3. Bumblebee Caps
  4. Find schematic of amplifier mcintosh mc 275 mkiv
  5. Heater wiring - Coaxial?
  6. now mono blocks!
  7. Heathkit AA-40 or AA-121
  8. UTC o-9 ouncers for headphone amp?
  9. Help modify 6H30 Mu-follower stage
  10. Help me to identify unknown tube
  11. Valve Compressor Circuit
  12. Should I rebuild my Eico 950 Cap Tester?
  13. Choke orientation (Need help)
  14. push pull 813 tube in ultra linear mode
  15. AD1865 DAC + 6SN7 analogue stage
  16. Inexpensive tube amplifier kits?
  17. SET amp/speaker issue.
  18. No pre-Amp - Pre Amp
  19. Found a CHEAP source of output transformers in Europe
  20. How calculate cathode LEDs biased
  21. ESR test for tube amps ?
  22. Anyone familiar with my 1975 Ampeg SVT
  23. asking help/knowledge asked: luxman d105u output stage
  24. Have you ever seen a 4 pin blue Alps pot??? need help
  25. Any ideas on this one???
  26. first 5f1 build is acting funny :/
  27. '57 twin question
  28. Why not 6C41C used in OTL??
  29. 6p14p(EL84) SE with 6n6p build jurnal
  30. Oscilloscope - Which one should I get ? What to look for?
  31. "Jonokuchi" - new desktop amp, or "Little red board"?
  32. Robust Driver stage recommendations
  33. Wireless World valve articles from the past
  34. Overshoot and Ringing
  35. B&K Tube Tester
  36. Harman Kardon A50K
  37. HiFi Tube amp project
  38. Submitted for your (dis) approval, OTL, Autobias Inv. Futterman
  39. Tone control - good diagram needed
  40. Pentron tube microphone mixer/preamp
  41. Dolby AC3 coming on nicely.
  42. Power Supply Question
  43. Dynatuner FM-1 Restoration
  44. faulty audioromy 6550 no output and very faith sound please help
  45. just one tube preamp or driver
  46. Power triode preamp a different way
  47. 49.95 Tube amp?!
  48. Which cap for the Musical Machine?
  49. How much power do I need in the kitchen?
  50. 1Gohm or higher resistor ...
  51. Grounding check for SE 300B amp
  52. Suggest me a build for HD600 headphones
  53. 6BQ5 Screen Voltage Regulator
  54. 6SN7 Tubes
  55. My first tube Amplifier VT4C DIY record
  56. Amplifier output wattage test
  57. Troubble shooting help please.....
  58. Heater Wiring
  59. 220/110 step down in reverse ... and more
  60. Input Level Devil please help
  61. Soft start for a preamp?
  62. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  63. Using one KT77 and one EL34 per side?
  64. Help identifying transformer wires.
  65. tube pre and tube power amp
  66. Spice Models for Tubes w Screen Grid by Gurski
  67. Theremin project needs some help!
  68. Transformer abuse or other use
  69. aikido heater voltage
  70. HY51Z datasheet, help !!!
  71. 6L6 amp with unique phase splitter - check my math
  72. Dynaco A451 Output Transformer
  73. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  74. 6AU6 preamp problem
  75. Help identifying a Telefunken(?) tube...
  76. UCC85 and e-pay
  77. Lundahl LL1676 - missing data
  78. valve phono pre-amp HELP needed
  79. Preamp pcb
  80. ECL82 pp guitar amp project
  81. Strange Problem In Tube Amp Build
  82. Output transformer question
  83. Replacing ECL86/6GW8 to PCL86(14GW8)???
  84. On or Off?
  85. Neg-Feedback into Grid of gain stage instead of cathode?
  86. Accuphase F-25 Japanese manual translation help!
  87. Negative supply with CT tranny
  88. E130L SE again
  89. tony builds a 7N7 preamp
  90. Tango 10429 78% Nickle Output Transformer?
  91. Bias for Ipod Input
  92. What about this driver????
  93. allen organ amp 75
  94. Needs help Tubezone Poseidon
  95. Lightbulb trick on filament circuit?
  96. AMC CVT3030a Help for repair
  97. TF110-48/UL in the UK?
  98. hum in pas2
  99. Aikido Cathode Follwer Question
  100. 12AX7 tube preamplifier for bass guitar (Need help)
  101. Fuses...what's the deal?
  102. Question Regarding a Partial Feedback 807 SE
  103. Preamp issue on Fender Blues Jr.
  104. Leftover transformers
  105. Newbie "In Search of help"
  106. ELL80/ECLL800 Cathode follower
  107. The "Tube" bookshelf
  108. knight KG-240? low output help
  109. Reverb trouble-Schematic reading help needed
  110. Vacuum tube VCO
  111. JE lab 2a3 , fizzy, squeal in one channel, help
  112. Trouble with a DIY EL34 Tube Amp Kit
  113. SPICE Transformer Model Spreadsheet
  114. Choosing the right triode as a Phase Inverter
  115. toob noob with GE 5670 and I'd like to do something with it. Help?
  116. my first tube amp, no tubes...
  117. Enough heat to power my CD player...
  118. My first tube amp: 6C33C
  119. S5 16LS kit as a first DIY tube build?
  120. lady day we 91 psu mod help
  121. On days like these ...
  122. The Magnetron - A Low Noise, Long Life Amplifier????
  123. 6M11's
  124. DC coupled 300B idea - request for comments
  125. Fisher bias
  126. How does anode voltage swing to twice HT voltage?
  127. Can a 7625 Ceramic Planar Triode be soldered ?
  128. AMI "DD" Project: 6L6
  129. Plate loading questions
  130. EZ81 rectifier
  131. PY500a
  132. Tube Regulator Thoughts?
  133. Fully balanced from cartridge to loudspeaker - a little help needed!
  134. OPT on the speaker side?
  135. tube circuit conversions?
  136. Current inrush limiter suggestions
  137. Repair of Philips EL6416 amplifiers.
  138. GU-19 In priboi
  139. Duncan Amps PSU Designer II
  140. Troubleshoot help for vibrato type problem
  141. using existing pre with this circuit
  142. Laney Tube Fusion 200 series 2 footswitch
  143. Antek AT-070L Specs
  144. Unused tube sections
  145. Rewire Rectifier Sockets for Tube Substitution
  146. Shuguang 300BC
  147. Sn/Pb S-Sn/Cu ...
  148. What and Where is BAF?
  149. CCS plate follower 12bh7 schematic needed pls
  150. 300B DC heaters confusion
  151. Blue Tube Red Plating = Help!
  152. Tube bass preamplifier power supply (Need Help)
  153. Opera Consonance M500 mkii
  154. 6AC7EH Better but different
  155. For that hard to find 5HY 2 amp choke...
  156. Cleaning up an old ST-70 chassis
  157. Accuphase P250 Amplifier Schematic Requred
  158. Pls Help me, this 6C33C pp Schematic is OK?
  159. Loud Noise due to NFB
  160. NAMM Zoo 2011
  161. Recommended O'Scope Reading?
  162. Damage to valve amp when powered up but disconnected to speakers?
  163. preferred resistor type
  164. use more then 'maximum capacitance' after tube rectifier
  165. Headphone Tube Amp D3a
  166. Dared 5.1 tube amp
  167. Designing Transformers with J.C.Maxwell
  168. Cathode resistor calc?
  169. Selector switch question
  170. good circuit to use with Grounded Grid Pre
  171. JJ KT88 tubes glowing bright yellow.
  172. Transistorised-Tubed-Magnetic Amplifier
  173. ST-35 Tube Brands
  174. Where you buy iron transformer core for DIY audio transformer
  175. Improve this SP-11 HV supply?
  176. More Antek Iron
  177. Edcor Transformer Specs
  178. Volume control resistance question? Step Attenuator?
  179. Minimum space between 6V6 tube in Push-Pull Amp
  180. GE Jan 6550a for SET amp?
  181. Chassis mount connector strip
  182. Transformer winding - mysterious!
  183. can anyone identify theses OT markings?
  184. Excessive hum with 1960's amp.
  185. Western Electric/Hickock 600A
  186. Pete Millett Uniamp
  187. cathode resistor sudden rising value on 7591
  188. 7591 cathode resistor unstable
  189. David
  190. Looking for a DHT Pre & Phono design / ideas please
  191. Hi, New member just bought k272a kit from Oatley
  192. Building an amp from scratch - what features would i want
  193. Lafayette LA215 voltage problem !
  194. 12ax7: How to maximize output?
  195. Low voltage tube pre-amp for T-amp
  196. Hybride bipolair amp
  197. Single end amp power supply upgrade
  198. Pentode curves - how to find operating point withoud going crazy?
  199. 6922 into 6H30 socket ?
  200. Headwize 6N1P OTL headphone amp having hum
  201. Need help to calculate R in a CCS!
  202. #40-LL1660-4*2A3
  203. Help with stereo tube amp design from parts
  204. Decoupling cap hum
  205. Plate chokes
  206. Tube output protection
  207. 12EN6 in triode mode...fine ???
  208. used 12at7
  209. Need advise with NFB loop
  210. 1964 Amplifier!!
  211. Very basic grid question????
  212. 12AX7 PULSE
  213. short article about operating points
  214. How is an amp's output measured?
  215. current/cathode feedback
  216. 6N23P, transistor PP hybrid amp project.
  217. Transformer choice for DC heater supply?
  218. Help me with i177 tubetester
  219. HeathKit Euw-15 Tube power Supply failure.
  220. Got unknown tube preamp board, need help!
  221. Ergo-Ella + Budget AVC Do-It-Box
  222. Phono pre amp question.
  223. Zener regulation for fixed-bias supply
  224. hot transformer
  225. H. H. Scott 299C output transformers
  226. decisions fostex and the DIY-K12G budget system..
  227. LTSpice GU19 GU29 6R3S
  228. power transfo as HT choke
  229. Dummy newb needs help with Bogen VP17X
  230. Modding the SAKUA AV200
  231. Anybody use 841s(VT-51)?
  232. Help me make use of these transformers
  233. Wiring Buck Transformer with GE transformer Help!
  234. audio research sp9
  235. WE417A Valve Preamplifier
  236. Hi-Fi Tube Amplifier and more
  237. Radford SC-22 Restoration - Input Transistor Biasing Question
  238. Tube Tester
  239. Looking for off-the-wall oil caps
  240. 805 MonoBlock SE Amp Kit?
  241. Back to back toroids
  242. 6AU6 in CCS circuits
  243. Morgan Jones' RIAA Pre-Amp
  244. Pre-amp using Hammond 372FX (300-0-300, 5, 6,3) - suggestions?
  245. Building an Aikido LV for a headphone amp
  246. What to do with a 6L6-GC?
  247. loose plate caps, hi temp glue???
  248. Power supply question
  249. RCA Line Input Shielding Technique Help
  250. Randall shutting down

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