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  1. DC coupled SE SChade amp
  2. First build 6V6 based
  3. Failed Converting UL to Pentode!?
  4. 1955 kids record player hum puzzle
  5. subwoofer output from my tube preamp
  6. EL84 SE Amp - specific transformer
  7. "GOOD" backup KT-88
  8. New or Old Output Transformer?
  9. Motorola console recap question
  10. Plate voltage on preamp tube too high
  11. Good valve design calculator website
  12. Ultra-on push-pull tetrode 6550
  13. My introduction to tube amps. The good, the bad, and the ugly.
  14. How do I calculate local feedback %?
  15. Newbie greeting & Resource
  16. Tips/Help With a Dying OTL Headphone Amp
  17. 6B4G and ECC83
  18. Maron buys a tube amp
  19. Newbie
  20. 845 AC filaments, my experience
  21. 8552 finals ?
  22. Low voltage 3W S.E. little amp, need comments and suggestions
  23. Single ended push pull ultra linear or?...
  24. Hello and questions about Magnavox SE amp
  25. Amp identification
  26. Millett DCPP No Output.
  27. using a Hammond 835 interstage ?
  28. Recommendation on versitile tube tester
  29. Mullard 6SN7GT
  30. RIAA tube pre amp
  31. Cheapo Ebay voltmeter
  32. Jolida SJ202a Schematic
  33. Tetra All in One Phono Preamp voltage
  34. Console pull advice
  35. Local feedback on IT secundary (PP amp)
  36. Computerized Curve Tracer Project
  37. Is 6w enough and can i use phone power amp?
  38. Yaqin MS-12B preamp - how to get more gain?
  39. Inductor Multiplier Patent
  40. KT90
  41. 6L6GC Hybrid Partial Feedback
  42. 7868 to 7591a conversion help
  43. SOS! 21st Century Regulator Dead!
  44. Transformer Placement - To shield or not to Shield
  45. cap multiplier suggestions wanted
  46. Bridging stereo tube amp to one more powerful mono output
  47. Weird pentode connections
  48. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  49. Please help info UTC transformer
  50. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  51. SUPER budget DIY tube amp - need help
  52. LEAK TL/12
  53. What decides gain of a valve stage ?
  54. 6AH4 Preamp..A great option for line stage
  55. Kondo M77
  56. 2C22 SRPP
  57. Resistor question
  58. Problem with X10-d as preamp
  59. Pilot One AA-410 1950s
  60. Measuring VAC on coupling cap
  61. Tube phono stage load
  62. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  63. Panasonic HV Electrolitics
  64. Unison Research Smart 845 & dripping sticky goo!
  65. Seeking Danish help to locate two 1950's magazine articles
  66. Valve cruelty ...
  67. Re- calculating RIAA network
  68. Just another cool toy to look at
  69. sherwood s-5000 vs. s-5500 iv OPt's
  70. Sound of 300B SET by Satoru Kobayashi
  71. Using UL taps instead of the anode taps to alter inpedence
  72. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  73. 807 PSE schematic design need
  74. 3 direct coupled 2A3 amps
  75. Tube preamplifier with chip power amp
  76. Anyone used IXCP10M90S ltspice model ?
  77. and the quiz identify power trans continue
  78. Valve HT power supply common-mode noise
  79. 12AX7 and 6AS5 tube amplifier
  80. Working with Eagle and single channel tube amp board.
  81. New hands-on tutorial for Tube Newbies
  82. Help me to choose tube "1 no ring" "2 has ring"
  83. Chinese board 6L6 KT88 is it worth???
  84. Valve Rectifier Testing
  85. Harman Kardon TA-120 Output Transformer
  86. Single ended transformer as pushpull?
  87. Resurrecting a nOrh SE9 Integrated Amp
  88. Fisher Amps?
  89. Repurposing an old Gulbransen Organ tube amp
  90. Help, the sound is silken or blow up?
  91. Now here's an idea - The DIYF QUAD
  92. Parallel output SE amp options
  93. What tube is equivalent 5879?
  94. Filament Xfmr: can I trade volts for amps?
  95. GU50 PP possible with this iron ?
  96. Hifi tube amps - overall sound
  97. Preamp grounding questions
  98. Tube rectifiers
  99. DIY PL84 + E180F
  100. McIntosh on How It's Made
  101. Choke input LCLC supply - question on minimum current
  102. EBC3 & CBL1 Tube AMP
  103. CLASS A HYBRID POWER AMP
  104. MXL V69 Mogami Edition signal cuts in/out
  105. Ultra-linear plate characteristic curve for EL34
  106. Need help to modify circuit to suit replacement power XFMR
  107. Line preamp schematic for 5GH8A wanted.
  108. help please - modify phono corrector
  109. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  110. A Russian glow tube regulator with specs of 75V 60mA ?
  111. Help with filament for ecc88
  112. How much power transformer is necessary?
  113. testing the 300b tube
  114. Headphone amplifier outputs, so many permutations!
  115. tube footprint in Eagle
  116. Need VTVM repairs
  117. First Timer - DIY Tube Amp
  118. Help identify OT please
  119. gEDA and tubes
  120. Triode Electronics Issues?
  121. RCA BC5B consolette manual?
  122. Help with converting EL37 amp to KT66
  123. treadmill choke
  124. Preamp OPT
  125. Probleme with Volume Pot
  126. Simple SE 6L6 2 watt Homebrew
  127. is 6J32P equivalent of EF806 ?
  128. new tubes vs old ones
  129. 6p36s tube torture.
  130. Questions re: Bypass of B+ to differential amp
  131. Tube choice for yaqin cd3 buffer
  132. yesterday and today
  133. 260VDC need how much VAC transformer, is it 184VAC?
  134. preamp static
  135. Tube Line or Phono Stage bare kit
  136. Grounding of Hammond transformers
  137. Spud Amplifier with 6E5P Tube
  138. RAT Tube Tester build
  139. need a little help with identification
  140. aikido 12vac help needed
  141. Mullard 3-3 PCB
  142. OTL Using OPT
  143. VA/CF 6SN7 preamp input points?
  144. Copper losses in output transformers
  145. Yaqin MC550 Anyone?
  146. Bigger value output coupling
  147. DIY KT88 SEUL
  148. Leben CS300x feedback loop cap
  149. 6T8 / EABC80 as phase splitter / other uses
  150. Curve Tracer Screen Current
  151. Aikido Cathode Follower preamplifier with remote
  152. Grid Isolation in Fault Conditions
  153. Audio research ls2b parts list
  154. Heathkit USC-1 pre-amp
  155. Counterpoint SA3 Project
  156. Why such a high bias current on output valves ?
  157. how long before new tubes are run in ?
  158. Latest project, valve stereo disco mixer
  159. Mullard 5-20 EL34 biasing
  160. Parallel Driver Tubes?
  161. B+ Regulators
  162. Looking for Cary SLP98 Tube Preamplifier Schematic
  163. Hirage Le Monstre euals my best valve amps !
  164. Ran a JJ6v6S at 37 Watts, is it damaged?
  165. Zener diodes as protection clippers
  166. KT120 upgrade from KT88 6550
  167. panasonic dc link capacitors
  168. PTFE covered wire
  169. Grounding Qustion?
  170. New high-Z 1:1 input transformer from Hammond (10k:10k)
  171. Tube amp wiring and temperatures
  172. Pete Millett's Uniamp
  173. 211 tube. more time to brake in or bad tube
  174. Just a thought.
  175. Tube Heater Question
  176. No not Again...Aikido Plate dissipation question
  177. RH amp question!
  178. Mullard 5-20 power supply
  179. b&k 500 tube chart question
  180. Combining two single-ended tube stages for XLR-output - Question
  181. Scope pattern
  182. Diode cathode bias?
  183. Contact Enhancers/Corrosion Inhibitors for Aluminum
  184. My SE 46 tube monoblocks project
  185. E88CC / 6922 Datasheet Limiting Values
  186. Fisher Power Transformers
  187. does someone know about this russia amplifier ?
  188. How to improve this 6B4G push-pull circuit
  189. EL34 UL PP Transformer
  190. sears silvertone medalist stereo amp schematic needed
  191. Led bias on powertubes?
  192. Thermal Runaway
  193. Going from zero to pro tube amplifier. Resources?
  194. DIY Novar Socket
  195. Hum pickup from line output transformers
  196. Photo of a JJ 300B Filaments!! Please! :)
  197. Super FU-29
  198. Questions about Tim Mellow 6C33C OTL
  199. James or Silk for EL36SE?
  200. Dead KT88
  201. MS 110B KT88 INTEGRATED AMPLIFIER
  202. The Mighty 6550...
  203. recomend me some EL34 PLEASE
  204. Adding tone controls
  205. TJ Full Music 2A3/CNE
  206. groove tubes for headphone amp
  207. IXYS LTSpice Models (or something equivalent?)
  208. Soviet 6p3s/6p3s-e
  209. A case of direct coupled cathode follower
  210. SE45 schematic monoblock to stereo help
  211. Heathkit Schematics & Manuals
  212. 211 tube amp problem Help
  213. Department of inapprehensible schematics
  214. How low can you go...?
  215. EL34/6L6 Screen reistors...
  216. 809, anyone played around with them?
  217. Skinny OTL
  218. Adjust drive and output level with one knob
  219. Help me rack some Gates Program Amps
  220. Switch Mode Heater Supply
  221. Pre Ampje
  222. Maida Regulator Digital Control
  223. Worried by 110v reading on 6.3v tap....
  224. Safety Alert - UK Yaqin users
  225. 27> EL34 (triode) > 300B
  226. Rockola juke box amp - unusual features
  227. 3.5 watt ECL82 Amp
  228. 12BH7 Headphone Amp
  229. White Cathode Follower Quandary
  230. help in aikido for sennheiser hd580
  231. Home brew more economical than an ST-35
  232. Modeling Pull-Push transformer in LTspice
  233. The Fisher 400-C "Fixer-upper"
  234. Power Transformer question/concern
  235. Nice little schematic drawing app w/ tube symbols
  236. best budget diy kit?
  237. Transconductance amplifier for headphones.
  238. El Cheapo information?
  239. Aikido 9-Pin Configuration
  240. Strange motorboating issue
  241. Lumley M120 Monoblocks - Need Manual, schematic or anything !!!
  242. Substituting higher wattage resistors
  243. cap coupling to interstage transformer or direct coupling?
  244. A question of feedback..
  245. Two Monoblocks "Dying" Within Days Of Each Other
  246. Russian 1Zh24B Pentods / design assistance.
  247. What Tubes for 5.8k PP transformers
  248. Problem with a power transformer.
  249. 300B OTL Preamp/Headphone Amp
  250. tantalum resistors

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