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  1. Exploding 300B
  2. power output of EL34
  3. 76tube into C3M (triode) via LL1660 to PP outputstage
  4. best operating points for e182cc tube
  5. Any thoughts about this volume/bal arrangement
  6. Filament tension spring material
  7. DC coupled SE SChade amp
  8. First build 6V6 based
  9. Failed Converting UL to Pentode!?
  10. 1955 kids record player hum puzzle
  11. subwoofer output from my tube preamp
  12. EL84 SE Amp - specific transformer
  13. "GOOD" backup KT-88
  14. New or Old Output Transformer?
  15. Motorola console recap question
  16. Plate voltage on preamp tube too high
  17. Good valve design calculator website
  18. Ultra-on push-pull tetrode 6550
  19. My introduction to tube amps. The good, the bad, and the ugly.
  20. How do I calculate local feedback %?
  21. Newbie greeting & Resource
  22. Tips/Help With a Dying OTL Headphone Amp
  23. 6B4G and ECC83
  24. Maron buys a tube amp
  25. Newbie
  26. 845 AC filaments, my experience
  27. 8552 finals ?
  28. Low voltage 3W S.E. little amp, need comments and suggestions
  29. Single ended push pull ultra linear or?...
  30. Hello and questions about Magnavox SE amp
  31. Amp identification
  32. Millett DCPP No Output.
  33. using a Hammond 835 interstage ?
  34. Recommendation on versitile tube tester
  35. Mullard 6SN7GT
  36. RIAA tube pre amp
  37. Cheapo Ebay voltmeter
  38. Jolida SJ202a Schematic
  39. Tetra All in One Phono Preamp voltage
  40. Console pull advice
  41. Local feedback on IT secundary (PP amp)
  42. Computerized Curve Tracer Project
  43. Is 6w enough and can i use phone power amp?
  44. Yaqin MS-12B preamp - how to get more gain?
  45. Inductor Multiplier Patent
  46. KT90
  47. 6L6GC Hybrid Partial Feedback
  48. 7868 to 7591a conversion help
  49. SOS! 21st Century Regulator Dead!
  50. Transformer Placement - To shield or not to Shield
  51. cap multiplier suggestions wanted
  52. Bridging stereo tube amp to one more powerful mono output
  53. Weird pentode connections
  54. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  55. Please help info UTC transformer
  56. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  57. SUPER budget DIY tube amp - need help
  58. LEAK TL/12
  59. What decides gain of a valve stage ?
  60. 6AH4 Preamp..A great option for line stage
  61. Kondo M77
  62. 2C22 SRPP
  63. Resistor question
  64. Problem with X10-d as preamp
  65. Pilot One AA-410 1950s
  66. Measuring VAC on coupling cap
  67. Tube phono stage load
  68. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  69. Panasonic HV Electrolitics
  70. Unison Research Smart 845 & dripping sticky goo!
  71. Seeking Danish help to locate two 1950's magazine articles
  72. Valve cruelty ...
  73. Re- calculating RIAA network
  74. Just another cool toy to look at
  75. sherwood s-5000 vs. s-5500 iv OPt's
  76. Sound of 300B SET by Satoru Kobayashi
  77. Using UL taps instead of the anode taps to alter inpedence
  78. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  79. 807 PSE schematic design need
  80. 3 direct coupled 2A3 amps
  81. Tube preamplifier with chip power amp
  82. Anyone used IXCP10M90S ltspice model ?
  83. and the quiz identify power trans continue
  84. Valve HT power supply common-mode noise
  85. 12AX7 and 6AS5 tube amplifier
  86. Working with Eagle and single channel tube amp board.
  87. New hands-on tutorial for Tube Newbies
  88. Help me to choose tube "1 no ring" "2 has ring"
  89. Chinese board 6L6 KT88 is it worth???
  90. Valve Rectifier Testing
  91. Harman Kardon TA-120 Output Transformer
  92. Single ended transformer as pushpull?
  93. Resurrecting a nOrh SE9 Integrated Amp
  94. Fisher Amps?
  95. Repurposing an old Gulbransen Organ tube amp
  96. Help, the sound is silken or blow up?
  97. Now here's an idea - The DIYF QUAD
  98. Parallel output SE amp options
  99. What tube is equivalent 5879?
  100. Filament Xfmr: can I trade volts for amps?
  101. GU50 PP possible with this iron ?
  102. Hifi tube amps - overall sound
  103. Preamp grounding questions
  104. Tube rectifiers
  105. DIY PL84 + E180F
  106. McIntosh on How It's Made
  107. Choke input LCLC supply - question on minimum current
  108. EBC3 & CBL1 Tube AMP
  109. CLASS A HYBRID POWER AMP
  110. MXL V69 Mogami Edition signal cuts in/out
  111. Ultra-linear plate characteristic curve for EL34
  112. Need help to modify circuit to suit replacement power XFMR
  113. Line preamp schematic for 5GH8A wanted.
  114. help please - modify phono corrector
  115. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  116. A Russian glow tube regulator with specs of 75V 60mA ?
  117. Help with filament for ecc88
  118. How much power transformer is necessary?
  119. testing the 300b tube
  120. Headphone amplifier outputs, so many permutations!
  121. tube footprint in Eagle
  122. Need VTVM repairs
  123. First Timer - DIY Tube Amp
  124. Help identify OT please
  125. gEDA and tubes
  126. Triode Electronics Issues?
  127. RCA BC5B consolette manual?
  128. Help with converting EL37 amp to KT66
  129. treadmill choke
  130. Preamp OPT
  131. Probleme with Volume Pot
  132. Simple SE 6L6 2 watt Homebrew
  133. is 6J32P equivalent of EF806 ?
  134. new tubes vs old ones
  135. 6p36s tube torture.
  136. Questions re: Bypass of B+ to differential amp
  137. Tube choice for yaqin cd3 buffer
  138. yesterday and today
  139. 260VDC need how much VAC transformer, is it 184VAC?
  140. preamp static
  141. Tube Line or Phono Stage bare kit
  142. Grounding of Hammond transformers
  143. Spud Amplifier with 6E5P Tube
  144. RAT Tube Tester build
  145. need a little help with identification
  146. aikido 12vac help needed
  147. Mullard 3-3 PCB
  148. OTL Using OPT
  149. VA/CF 6SN7 preamp input points?
  150. Copper losses in output transformers
  151. Yaqin MC550 Anyone?
  152. Bigger value output coupling
  153. DIY KT88 SEUL
  154. Leben CS300x feedback loop cap
  155. 6T8 / EABC80 as phase splitter / other uses
  156. Curve Tracer Screen Current
  157. Aikido Cathode Follower preamplifier with remote
  158. Grid Isolation in Fault Conditions
  159. Audio research ls2b parts list
  160. Heathkit USC-1 pre-amp
  161. Counterpoint SA3 Project
  162. Why such a high bias current on output valves ?
  163. how long before new tubes are run in ?
  164. Latest project, valve stereo disco mixer
  165. Mullard 5-20 EL34 biasing
  166. Parallel Driver Tubes?
  167. B+ Regulators
  168. Looking for Cary SLP98 Tube Preamplifier Schematic
  169. Hirage Le Monstre euals my best valve amps !
  170. Ran a JJ6v6S at 37 Watts, is it damaged?
  171. Zener diodes as protection clippers
  172. KT120 upgrade from KT88 6550
  173. panasonic dc link capacitors
  174. PTFE covered wire
  175. Grounding Qustion?
  176. New high-Z 1:1 input transformer from Hammond (10k:10k)
  177. Tube amp wiring and temperatures
  178. Pete Millett's Uniamp
  179. 211 tube. more time to brake in or bad tube
  180. Just a thought.
  181. Tube Heater Question
  182. No not Again...Aikido Plate dissipation question
  183. RH amp question!
  184. Mullard 5-20 power supply
  185. b&k 500 tube chart question
  186. Combining two single-ended tube stages for XLR-output - Question
  187. Scope pattern
  188. Diode cathode bias?
  189. Contact Enhancers/Corrosion Inhibitors for Aluminum
  190. My SE 46 tube monoblocks project
  191. E88CC / 6922 Datasheet Limiting Values
  192. Fisher Power Transformers
  193. does someone know about this russia amplifier ?
  194. How to improve this 6B4G push-pull circuit
  195. EL34 UL PP Transformer
  196. sears silvertone medalist stereo amp schematic needed
  197. Led bias on powertubes?
  198. Thermal Runaway
  199. Going from zero to pro tube amplifier. Resources?
  200. DIY Novar Socket
  201. Hum pickup from line output transformers
  202. Photo of a JJ 300B Filaments!! Please! :)
  203. Super FU-29
  204. Questions about Tim Mellow 6C33C OTL
  205. James or Silk for EL36SE?
  206. Dead KT88
  207. MS 110B KT88 INTEGRATED AMPLIFIER
  208. The Mighty 6550...
  209. recomend me some EL34 PLEASE
  210. Adding tone controls
  211. TJ Full Music 2A3/CNE
  212. groove tubes for headphone amp
  213. IXYS LTSpice Models (or something equivalent?)
  214. Soviet 6p3s/6p3s-e
  215. A case of direct coupled cathode follower
  216. SE45 schematic monoblock to stereo help
  217. Heathkit Schematics & Manuals
  218. 211 tube amp problem Help
  219. Department of inapprehensible schematics
  220. How low can you go...?
  221. EL34/6L6 Screen reistors...
  222. 809, anyone played around with them?
  223. Skinny OTL
  224. Adjust drive and output level with one knob
  225. Help me rack some Gates Program Amps
  226. Switch Mode Heater Supply
  227. Pre Ampje
  228. Maida Regulator Digital Control
  229. Worried by 110v reading on 6.3v tap....
  230. Safety Alert - UK Yaqin users
  231. 27> EL34 (triode) > 300B
  232. Rockola juke box amp - unusual features
  233. 3.5 watt ECL82 Amp
  234. 12BH7 Headphone Amp
  235. White Cathode Follower Quandary
  236. help in aikido for sennheiser hd580
  237. Home brew more economical than an ST-35
  238. Modeling Pull-Push transformer in LTspice
  239. The Fisher 400-C "Fixer-upper"
  240. Power Transformer question/concern
  241. Nice little schematic drawing app w/ tube symbols
  242. best budget diy kit?
  243. Transconductance amplifier for headphones.
  244. El Cheapo information?
  245. Aikido 9-Pin Configuration
  246. Strange motorboating issue
  247. Lumley M120 Monoblocks - Need Manual, schematic or anything !!!
  248. Substituting higher wattage resistors
  249. cap coupling to interstage transformer or direct coupling?
  250. A question of feedback..

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