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  1. AA 151 or Scott 222
  2. Toroidal Output Transformer
  3. Hytron HY615 Data ???
  4. Can I use a 12AX7 with CT 6.3V?
  5. torroidal power transformers
  6. What amp is this
  7. B+ ramping up before CCS filament - danger?
  8. Telefunken Magnetophon 85 --> EL95 Guitar amp
  9. Recommend a good plate choke for 26 tube!!
  10. S11E12 TUBES
  11. Low dropout 6.3v
  12. how to adjust the filament power ecc83
  13. Cary/AES - AE3 Linestage Help Needed !
  14. 5867a
  15. 6V6/12AX7 Project Question/Help
  16. Ultra Linear Push Pull Tube amp
  17. A little help with 6v6 screen needed.
  18. Output Transformers... Decisions Decisions
  19. Need Help. PSU not voltage down from design
  20. D/A preamp FFT measurements for review plz
  21. Type 40, 12A, 112A(syl)
  22. American Audio Picker
  23. one half of a tube in schematic????
  24. estimating power rating of Telefunken transformer
  25. Where is mistake??
  26. Building a 6s45P amp - transformer help
  27. High-End preamplifier with ECC82!
  28. Attempting to recap a couple of old Ampex 2010 suitcase amps
  29. Hi specs rectifier needed
  30. Lux 6056N Intertstage Transformer
  31. Aikido Line Stage / Buffer
  32. JJ KT88s and other octals
  33. Triodes from Russia
  34. Little help needed / do I have a bad tube or really good tube?
  35. 5.1 channel 807 SE amplifier
  36. Plate loaded 6N6P over SRPP 6N6P any day of the week...
  37. Voltage multiplier vs transformer for preamp HV power supply
  38. does tube bias drift like silicon devices
  39. What are the best pots for less than $50 each?
  40. Best EL34 For Triode mode
  41. ASL AQ 1002 PP KT88 problem with input stage
  42. 2A3 Amp schematic suggestions?
  43. what I need for safe use mercury rectifier
  44. Anybody listened to Glow Audio?
  45. Tubes too close to output transformers?
  46. Help with stereo to mono for project
  47. MC3500 with 807 tubes and modern driver tubes
  48. Multiple Film Caps in parallel, Problems?
  49. I need a project......preferably a HIFI amp..........
  50. Aguilar DB-900 question
  51. REN904 for linestage?
  52. Urgent advice on Chinese purchase please!
  53. VR tubes, minimum current
  54. Senior Project Tube Preamp
  55. Antek AS-4T430 measurements
  56. small, light dc coupled 6ea7 amp sanity check
  57. 6S33S SE Transformer Set
  58. I think I blew my amp!! plase help
  59. Genalex VS Mullard 12AT7 & 12AX7's HUGE DIFF?
  60. testing 6550's on a Hickok 539b, same as KT88?
  61. 9V tube drive pedals - worth it?
  62. Music Angel XD-850MKIII 300b integrated amp
  63. 8150's
  64. More junk from China
  65. 6GM8 above 8mA/24V
  66. One Tube Sound Better Than Four?
  67. HK Citation V rebuild - any advice?
  68. 6GM8/ECC86
  69. Sound Valves vtp-101 Schematic
  70. ~17-18w sweep tube with large plate cap
  71. Fisher 500B Comparison
  72. New build of P-P PCL86 Amp
  73. Transformer question
  74. Can 110V Quad IIs be configured to 220V?
  75. Advice needed re repairing Audio Research VT100
  76. Yaqin SD-CD3 Tube Buffer - upgrading caps
  77. Best value speakers
  78. Peavey Windsor Studio The output tube El 34 burned out
  79. Gyrator PSU's in tube amps
  80. EL34 Amp Running KT66, Safe ?
  81. MJ Optimized Valve Regulator
  82. Need JAN 6418 tube stereo headphone preamp kit advice!
  83. Electronic choke
  84. Can you please help identifying this amp?
  85. [TubeAmp] Beginner's questions
  86. .47uF output cap to 1uF?
  87. Spark gaps on output transformers
  88. St 35 or St 70?
  89. Pi wound output transformers
  90. miniatures 6n1p 6n2p
  91. Begginer questions about a guitar pre amp
  92. HK Citation V schematic?
  93. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  94. Physical Oscillating noise from phono stage
  95. PP 6c33c-b
  96. Modifying the classic Williamson
  97. eimac 152TL and 304TL
  98. LTspice model for Dynaco A470 Output Transfomer
  99. audiodesignguide.com PP KT88
  100. One more 4P1L SE
  101. Mount rectifier above torroidal transformer?
  102. Extending Tube Sockets off a PCB
  103. EMG 200 tube tester
  104. Looking for a great starter stereo P-P amp
  105. Question regarding value of Telefunken tubes.
  106. Magic Eye tube
  107. Partridge Transformers
  108. 6CG7 replacing E88CC in SE KT88 Amp.
  109. Omit the filament windings -- LTM8033 from Linear
  110. Best position for bleeder resistor?
  111. anyone have experience with a Radio Craftsmen C400?
  112. Amp-A, a variation to the EL84 Push Pull theme
  113. tony's 6LU8 push-pull power amp build
  114. First Post Here
  115. MFA Lumi sings high-pitched tunes
  116. Power tubes not drawing current
  117. replacing tubes with circuitry
  118. High Voltage Regulators (Maida or zener)
  119. GU-81m tube amp schematics???
  120. Suggestions on SIPP driver stage
  121. How to eliminate the "white noise" for the 300B tube amp?
  122. 6BQ5 UL Curves?
  123. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  124. 6N1P and 6N6P OTL headphone amp
  125. New Project
  126. Understanding Steve Bench's regulated power supply
  127. Preamp with buffer design
  128. JP200 preamp?
  129. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  130. New Tube Manufacture?
  131. Lowering B+ in PS
  132. Rectifier tube blows
  133. direct coupling
  134. Need some help with these tubes
  135. Edcor GSXE10-8-5K primary Inductance?
  136. SE 2.5k secondary 2w guitar amp
  137. My "Red board" chassis
  138. PP EL34
  139. Building something better with a Chinese SE EL34B Amp DIY Kit
  140. Problem with my amp, and I have run out of ideas
  141. Value of coupling caps
  142. Testing 6BQ5 on Hickok I-177B
  143. Stepped Attenuator for AI Modulus IIA
  144. Tubes are beautifully colored....right?
  145. Differential Input for Aikido Amp?
  146. MY BEST OTL PREAMPLIFIER
  147. Valve testing machine
  148. Line stage with 12AU7 and 6CG7 anyone?
  149. Vibrating capacitor
  150. MingDa MC845-C or Opera COnsonance Reference 9.9
  151. Lower gain 12AX7?
  152. Needed: schematic for Ming Da MC34ab
  153. 12AX7 high gain guitar amp
  154. Solid State Cathodyne Phase Splitter Device?
  155. My Wave Isn't Square.
  156. 6J7 driver in WE91 like amplifier
  157. F2a - C3m Monkey
  158. balanced/unbalanced questions decision time
  159. Stern's saville double 6
  160. GM70 psu transformer.
  161. Antek toroidal vs Edcor?
  162. current production pentode, I_a ~ 8mA
  163. Brook 10c clone
  164. Unknown lamps need help
  165. What's wrong with this?
  166. Microphonics from C0G Caps across Heaters
  167. Yarland FV34CIII vs Synthesis Nimis
  168. 12AT7 and TDA1543...
  169. Eico Hf-81 Integrated Amplifier
  170. Tubed voltage regulator for KT88se amp, need help ?
  171. 1st post what can i build with this?
  172. CJ PV-3 voltage values for schematic
  173. How to analyze square waves?
  174. From KT90 to KT88
  175. side by side bifilar windings in excess of 1000 volts
  176. looking for a great tube amp book.
  177. Revox G36 Mod for preamp
  178. 33 in triode mode...any experience ?
  179. Help with Decware Zen EL84 SET
  180. Bumblebee Caps
  181. Find schematic of amplifier mcintosh mc 275 mkiv
  182. Heater wiring - Coaxial?
  183. now mono blocks!
  184. Heathkit AA-40 or AA-121
  185. UTC o-9 ouncers for headphone amp?
  186. Help modify 6H30 Mu-follower stage
  187. Help me to identify unknown tube
  188. Valve Compressor Circuit
  189. Should I rebuild my Eico 950 Cap Tester?
  190. Choke orientation (Need help)
  191. push pull 813 tube in ultra linear mode
  192. AD1865 DAC + 6SN7 analogue stage
  193. Inexpensive tube amplifier kits?
  194. SET amp/speaker issue.
  195. No pre-Amp - Pre Amp
  196. Found a CHEAP source of output transformers in Europe
  197. How calculate cathode LEDs biased
  198. ESR test for tube amps ?
  199. Anyone familiar with my 1975 Ampeg SVT
  200. asking help/knowledge asked: luxman d105u output stage
  201. Have you ever seen a 4 pin blue Alps pot??? need help
  202. Any ideas on this one???
  203. first 5f1 build is acting funny :/
  204. '57 twin question
  205. Why not 6C41C used in OTL??
  206. 6p14p(EL84) SE with 6n6p build jurnal
  207. Oscilloscope - Which one should I get ? What to look for?
  208. "Jonokuchi" - new desktop amp, or "Little red board"?
  209. Robust Driver stage recommendations
  210. Wireless World valve articles from the past
  211. Overshoot and Ringing
  212. B&K Tube Tester
  213. Harman Kardon A50K
  214. HiFi Tube amp project
  215. Submitted for your (dis) approval, OTL, Autobias Inv. Futterman
  216. Tone control - good diagram needed
  217. Pentron tube microphone mixer/preamp
  218. Dolby AC3 coming on nicely.
  219. Power Supply Question
  220. Dynatuner FM-1 Restoration
  221. faulty audioromy 6550 no output and very faith sound please help
  222. just one tube preamp or driver
  223. Power triode preamp a different way
  224. 49.95 Tube amp?!
  225. Which cap for the Musical Machine?
  226. How much power do I need in the kitchen?
  227. 1Gohm or higher resistor ...
  228. Grounding check for SE 300B amp
  229. Suggest me a build for HD600 headphones
  230. 6BQ5 Screen Voltage Regulator
  231. 6SN7 Tubes
  232. My first tube Amplifier VT4C DIY record
  233. Amplifier output wattage test
  234. Troubble shooting help please.....
  235. Heater Wiring
  236. 220/110 step down in reverse ... and more
  237. Input Level Devil please help
  238. Soft start for a preamp?
  239. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  240. Using one KT77 and one EL34 per side?
  241. Help identifying transformer wires.
  242. tube pre and tube power amp
  243. Spice Models for Tubes w Screen Grid by Gurski
  244. Theremin project needs some help!
  245. Transformer abuse or other use
  246. aikido heater voltage
  247. HY51Z datasheet, help !!!
  248. 6L6 amp with unique phase splitter - check my math
  249. Dynaco A451 Output Transformer
  250. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes

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