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  1. Mullard 6SN7GT
  2. RIAA tube pre amp
  3. Cheapo Ebay voltmeter
  4. Jolida SJ202a Schematic
  5. Tetra All in One Phono Preamp voltage
  6. Console pull advice
  7. Local feedback on IT secondary (PP amp)
  8. Computerized Curve Tracer Project
  9. Is 6w enough and can i use phone power amp?
  10. Yaqin MS-12B preamp - how to get more gain?
  11. Inductor Multiplier Patent
  12. KT90
  13. 6L6GC Hybrid Partial Feedback
  14. 7868 to 7591a conversion help
  15. SOS! 21st Century Regulator Dead!
  16. Transformer Placement - To shield or not to Shield
  17. cap multiplier suggestions wanted
  18. Bridging stereo tube amp to one more powerful mono output
  19. Weird pentode connections
  20. My last S.E. amplifier (pentode driver + Beam Power Tube Ultralinear mode)
  21. Please help info UTC transformer
  22. ARC SP-6B Tube Heaters Glow Very Bright at Startup
  23. SUPER budget DIY tube amp - need help
  24. LEAK TL/12
  25. What decides gain of a valve stage ?
  26. 6AH4 Preamp..A great option for line stage
  27. Kondo M77
  28. 2C22 SRPP
  29. Resistor question
  30. Problem with X10-d as preamp
  31. Pilot One AA-410 1950s
  32. Measuring VAC on coupling cap
  33. Tube phono stage load
  34. ANUBIS - Another Tube-Transistor Hybrid Amplifier
  35. Panasonic HV Electrolitics
  36. Unison Research Smart 845 & dripping sticky goo!
  37. Seeking Danish help to locate two 1950's magazine articles
  38. Valve cruelty ...
  39. Re- calculating RIAA network
  40. Just another cool toy to look at
  41. sherwood s-5000 vs. s-5500 iv OPt's
  42. Sound of 300B SET by Satoru Kobayashi
  43. Using UL taps instead of the anode taps to alter inpedence
  44. Help fast please! Type 3 Ei KT90's - Pre or Post War? How do you know?
  45. 807 PSE schematic design need
  46. 3 direct coupled 2A3 amps
  47. Tube preamplifier with chip power amp
  48. Anyone used IXCP10M90S ltspice model ?
  49. and the quiz identify power trans continue
  50. Valve HT power supply common-mode noise
  51. 12AX7 and 6AS5 tube amplifier
  52. Working with Eagle and single channel tube amp board.
  53. New hands-on tutorial for Tube Newbies
  54. Help me to choose tube "1 no ring" "2 has ring"
  55. Chinese board 6L6 KT88 is it worth???
  56. Valve Rectifier Testing
  57. Harman Kardon TA-120 Output Transformer
  58. Single ended transformer as pushpull?
  59. Resurrecting a nOrh SE9 Integrated Amp
  60. Fisher Amps?
  61. Repurposing an old Gulbransen Organ tube amp
  62. Help, the sound is silken or blow up?
  63. Now here's an idea - The DIYF QUAD
  64. Parallel output SE amp options
  65. What tube is equivalent 5879?
  66. Filament Xfmr: can I trade volts for amps?
  67. GU50 PP possible with this iron ?
  68. Hifi tube amps - overall sound
  69. Preamp grounding questions
  70. Tube rectifiers
  71. DIY PL84 + E180F
  72. McIntosh on How It's Made
  73. Choke input LCLC supply - question on minimum current
  74. EBC3 & CBL1 Tube AMP
  75. CLASS A HYBRID POWER AMP
  76. MXL V69 Mogami Edition signal cuts in/out
  77. Ultra-linear plate characteristic curve for EL34
  78. Need help to modify circuit to suit replacement power XFMR
  79. Line preamp schematic for 5GH8A wanted.
  80. help please - modify phono corrector
  81. Help me: Brimar 5Z4G, 5Y3GT is this an equivalent to a 5Y3WGTA?
  82. A Russian glow tube regulator with specs of 75V 60mA ?
  83. Help with filament for ecc88
  84. How much power transformer is necessary?
  85. testing the 300b tube
  86. Headphone amplifier outputs, so many permutations!
  87. tube footprint in Eagle
  88. Need VTVM repairs
  89. First Timer - DIY Tube Amp
  90. Help identify OT please
  91. gEDA and tubes
  92. Triode Electronics Issues?
  93. RCA BC5B consolette manual?
  94. Help with converting EL37 amp to KT66
  95. treadmill choke
  96. Preamp OPT
  97. Probleme with Volume Pot
  98. Simple SE 6L6 2 watt Homebrew
  99. is 6J32P equivalent of EF806 ?
  100. new tubes vs old ones
  101. 6p36s tube torture.
  102. Questions re: Bypass of B+ to differential amp
  103. Tube choice for yaqin cd3 buffer
  104. yesterday and today
  105. 260VDC need how much VAC transformer, is it 184VAC?
  106. preamp static
  107. Tube Line or Phono Stage bare kit
  108. Grounding of Hammond transformers
  109. Spud Amplifier with 6E5P Tube
  110. RAT Tube Tester build
  111. need a little help with identification
  112. aikido 12vac help needed
  113. Mullard 3-3 PCB
  114. OTL Using OPT
  115. VA/CF 6SN7 preamp input points?
  116. Copper losses in output transformers
  117. Yaqin MC550 Anyone?
  118. Bigger value output coupling
  119. DIY KT88 SEUL
  120. Leben CS300x feedback loop cap
  121. 6T8 / EABC80 as phase splitter / other uses
  122. Curve Tracer Screen Current
  123. Aikido Cathode Follower preamplifier with remote
  124. Grid Isolation in Fault Conditions
  125. Audio research ls2b parts list
  126. Heathkit USC-1 pre-amp
  127. Counterpoint SA3 Project
  128. Why such a high bias current on output valves ?
  129. how long before new tubes are run in ?
  130. Latest project, valve stereo disco mixer
  131. Mullard 5-20 EL34 biasing
  132. Parallel Driver Tubes?
  133. B+ Regulators
  134. Looking for Cary SLP98 Tube Preamplifier Schematic
  135. Hirage Le Monstre equals my best valve amps !
  136. Ran a JJ6v6S at 37 Watts, is it damaged?
  137. Zener diodes as protection clippers
  138. KT120 upgrade from KT88 6550
  139. panasonic dc link capacitors
  140. PTFE covered wire
  141. Grounding Qustion?
  142. New high-Z 1:1 input transformer from Hammond (10k:10k)
  143. Tube amp wiring and temperatures
  144. Pete Millett's Uniamp
  145. 211 tube. more time to brake in or bad tube
  146. Just a thought.
  147. Tube Heater Question
  148. No not Again...Aikido Plate dissipation question
  149. RH amp question!
  150. Mullard 5-20 power supply
  151. b&k 500 tube chart question
  152. Combining two single-ended tube stages for XLR-output - Question
  153. Scope pattern
  154. Diode cathode bias?
  155. Contact Enhancers/Corrosion Inhibitors for Aluminum
  156. My SE 46 tube monoblocks project
  157. E88CC / 6922 Datasheet Limiting Values
  158. Fisher Power Transformers
  159. does someone know about this russia amplifier ?
  160. How to improve this 6B4G push-pull circuit
  161. EL34 UL PP Transformer
  162. sears silvertone medalist stereo amp schematic needed
  163. Led bias on powertubes?
  164. Thermal Runaway
  165. Going from zero to pro tube amplifier. Resources?
  166. DIY Novar Socket
  167. Hum pickup from line output transformers
  168. Photo of a JJ 300B Filaments!! Please! :)
  169. Super FU-29
  170. Questions about Tim Mellow 6C33C OTL
  171. James or Silk for EL36SE?
  172. Dead KT88
  173. MS 110B KT88 INTEGRATED AMPLIFIER
  174. The Mighty 6550...
  175. recomend me some EL34 PLEASE
  176. Adding tone controls
  177. TJ Full Music 2A3/CNE
  178. groove tubes for headphone amp
  179. IXYS LTSpice Models (or something equivalent?)
  180. Soviet 6p3s/6p3s-e
  181. A case of direct coupled cathode follower
  182. SE45 schematic monoblock to stereo help
  183. Heathkit Schematics & Manuals
  184. 211 tube amp problem Help
  185. Department of inapprehensible schematics
  186. How low can you go...?
  187. EL34/6L6 Screen reistors...
  188. 809, anyone played around with them?
  189. Skinny OTL
  190. Adjust drive and output level with one knob
  191. Help me rack some Gates Program Amps
  192. Switch Mode Heater Supply
  193. Pre Ampje
  194. Maida Regulator Digital Control
  195. Worried by 110v reading on 6.3v tap....
  196. Safety Alert - UK Yaqin users
  197. 27> EL34 (triode) > 300B
  198. Rockola juke box amp - unusual features
  199. 3.5 watt ECL82 Amp
  200. 12BH7 Headphone Amp
  201. White Cathode Follower Quandary
  202. help in aikido for sennheiser hd580
  203. Home brew more economical than an ST-35
  204. Modeling Pull-Push transformer in LTspice
  205. The Fisher 400-C "Fixer-upper"
  206. Power Transformer question/concern
  207. Nice little schematic drawing app w/ tube symbols
  208. best budget diy kit?
  209. Transconductance amplifier for headphones.
  210. El Cheapo information?
  211. Aikido 9-Pin Configuration
  212. Strange motorboating issue
  213. Lumley M120 Monoblocks - Need Manual, schematic or anything !!!
  214. Substituting higher wattage resistors
  215. cap coupling to interstage transformer or direct coupling?
  216. A question of feedback..
  217. Two Monoblocks "Dying" Within Days Of Each Other
  218. Russian 1Zh24B Pentods / design assistance.
  219. What Tubes for 5.8k PP transformers
  220. Problem with a power transformer.
  221. 300B OTL Preamp/Headphone Amp
  222. tantalum resistors
  223. 6BM8 in STC mode
  224. My Moscode again: What is the bias current?
  225. OTL WCF headphone amp build + awesome prototype material
  226. Type 42 single ended ideas
  227. Help with my Moscode 300 amp
  228. Thoughts on this volume potentiometer?
  229. Optimum load impedance for PCL85?
  230. Croatian triode Festival 2014.
  231. Old ekco tv transformers
  232. vacuum tube score.. what to do with
  233. Valve based disco mixer.
  234. Webcor ceramic phono input circuitry suggestions?
  235. Position of OPT windings
  236. sd2 seven pin??
  237. Help design a Small 250VDC PSU for tube preamp
  238. Bright Driver Tubes 12AU7, 12BH7, 5814...
  239. Question about using tube socket center hole for star ground
  240. Heathkit UA-2 clone project
  241. Schematic CAD Program
  242. Latest on the RH amps..
  243. Transformer design program
  244. 807 "Musicians Amplifier" help
  245. J.E. LABS PP2A3 POWER SUPPLY ?
  246. Mono Block Building Project
  247. EL34 CCS ideas
  248. Magnavox 8601-20
  249. wood/metal vs all-metal chassis
  250. Design data on dry battery tubes

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