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  1. Triode Electronics 30W SE Transformer
  2. SMALL SIZE OUTPUT TRANSFORMERS
  3. headphone amp with 7025?
  4. Separation of preamp and power amp
  5. Aikido 9pin with 6n1p and 6n6p as Headphone
  6. PreAmp output transformers
  7. Line-out on tubes
  8. Would this scheme work ?
  9. differential cascode patented in 2007
  10. Question about AMP185 Rectifier Circuit
  11. correct heater wiring
  12. Speaker snap or crack (no pop)
  13. Very long cables
  14. Help! 2A3 SET quit after hot restart
  15. INTEGRATED HYBRID AMP WITH NO LOAD
  16. ECC88 symbol problem in TINA-TI
  17. 12AX7 preamp on 375V
  18. The Blue Velvet Line Preamp with 7193 instead of 6SN7
  19. Increase idle current on my KT77's?
  20. Yet another nutty idea - don't say I didn't warn
  21. Need help calibrating a Hickok 6000 Chicago
  22. need someone to run a sim in PSUD2...my PC is down and my MAC wont runt the program!!
  23. Building an B-15-inspired amp
  24. China preamp Xiang Sheng 768A
  25. RE: Fisher 200 tube amp fuse blowing issue
  26. How do you match output tubes?
  27. Best Dyna ST-70 rebuild kit?
  28. Help with tube wiring
  29. Decided on Gibson GA 20 need layout drawings etc.
  30. st70 problem
  31. Help with info on old valve amp
  32. Exceeding V-heater-cathode
  33. Cayin/Sparks A- 50T schematic.
  34. Looking for Bi siemens datasheet
  35. Transformers, transformers, transformers...
  36. Need ideas for my 6V6 from 1946 Blues / rockabilly
  37. Quasi complimentary output stage?
  38. 4ohm output transformer with 8ohm speaker
  39. First DIY project for a good power Amplifier
  40. Cherry red plates
  41. DIY triode
  42. First post/build
  43. New Transformer Vendor In Belgium
  44. KT88 grid stopper
  45. Connecting valve shields to earth
  46. Shindo MAZERIS BELLEVUS MODEL 454-2xAttenuator-How works this Circuit? 6067+12BH7
  47. Fixed bias failure B+ switch off protection
  48. Who can tell me where to buy Caddock MS220
  49. Uses for Quicksilver Transformers
  50. SE amp problem
  51. EL-34 to 6P3S-E
  52. 6922 sepp with Balanced Gains
  53. What path to choose for Hamonica amplifier?
  54. tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
  55. Turning a 6.3 V secondary into a 5 V secondary on an Antek 2T350
  56. gridchokes/output caps
  57. Can I build an MC30?
  58. Cathodyne: Can someone please help me fill in the blanks ?
  59. help hovland hp200
  60. 6SL7 and 6AS7 PP amplifier, design advice needed
  61. Project: Baldwin Tube Amp...
  62. Power Supply Input Capacitor - JE simple 45 question
  63. Tube output: Voltage or Current source?
  64. Edcor's new E-store website.....finally!
  65. Help complete the 300B schematic
  66. Confusion about a 5Y3GT rectifier
  67. Need advice on 300B circuit
  68. PCB in components
  69. new 6080 dc pp
  70. Single ended to balanced Aikido with mosfets in buffer position
  71. Simple LED power indicator light circuit?
  72. about 83 mercury rectifier
  73. Aikido Zo Calculation
  74. Line out issue - 1965 Ampeg B-18-N
  75. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  76. Is this Telefunken fake or OEM?
  77. About Hmmmmm
  78. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  79. 6BN11 vs 6CB6
  80. Is output stage local feedback necessary?
  81. Tube Longevity
  82. Power triode drive current requirements
  83. OPT Selection Question
  84. Recommend me a 6V6 P-P schematic
  85. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  86. So, im going to replace the Alps with a PEC...someone help?
  87. 13e1 se "shade" some questions
  88. Pio russian capacitor K42-11...is good ?
  89. My first build VTA ST-120
  90. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  91. DIY 50C5 mini amp...
  92. So you think you have cool tubes?????
  93. Layout
  94. Looking to ID this amp
  95. Help me to make tube amply
  96. CAT SL1 SIGNATURE schematik phono
  97. Have anyone built this 6V6 amp?
  98. GU-50 in Single-Ended Triode Configuration - What bias points?
  99. DC coupling on a LTP? Opinions and help needed on Fred's design.
  100. Power Selection - Help Needed
  101. Which speaker with a 1/4W tube amp?
  102. 6973 VS 6CZ5 substitute
  103. Third Reich tubes
  104. Hello...and another ST-70 project.
  105. Home theater magic smoke...smoked and I think I heard a mirror crack...
  106. Scott LK48-B restoration
  107. 3 - 12AU7 Preamp. Is there such an animal?
  108. 300b filament
  109. resistor 880 ohms cathode
  110. Anyone have a Bugle Boy logo
  111. Change of circuit from triode to tetrode
  112. Need upgrade info for my Atma-Sphere Novacron Amps
  113. Whats Vintage Testing Equipment Do YOU Have/Use?
  114. JJ Kt77 Bias?
  115. tube rectified psu
  116. HELP!: my SET amp was turned off without a load and now it sound veiled!
  117. 5842 grid leak
  118. AMI Jukebox speaker impedence question
  119. Advice Needed: "Flabby" Amp Low-End
  120. Aikido transformer coupled output
  121. Audio measurements on tube amp. ? look here
  122. 12BH7A driver stage help
  123. Audio drive to g2 connected to g1 via 15K0
  124. KT88 SE Complete Kit
  125. Any high-end 6BM8 push pull tube amp schematic ?
  126. How a Triode Works
  127. EL3N substitute
  128. Magnavox AMP-185
  129. Best 6V6G that won't get me divorced..
  130. Shorted EL34 ?
  131. ARC VS60 hum in speaker
  132. Need help for a bias circuit
  133. Eico HF20 Output Txr Questions
  134. A Radford STA15 restoration story
  135. Tube Testing in DC Area
  136. Thorens PR24
  137. Newbie here with a couple questions
  138. 300B SwitchMode filament supply
  139. Mixed bias for balancing unmatched tubes in PPP?
  140. My First DIY Experience: An Aikido/Tetra Preamp
  141. how to test chokes for current and voltage
  142. pictures miniblok 1 and miniblok 2 by fred nachbaur
  143. Help with Aikido Preamp+class d amp
  144. will a PTX without center tap work?
  145. Anyone have information on 300B silvertone tube
  146. 6P14P push pull with low output
  147. passive 30Hz-20kHz Bandpass filter for tube preamp?
  148. My First Amp
  149. Frank's 6sn7 preamp
  150. My new 300B Amp
  151. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  152. Tube Gear Supply/Surplus in Houston Area
  153. What 2a3 ?
  154. long tailed pair - need more gain
  155. how to bypass the volume pot on my SET amp?
  156. 2 stage AIKIDO
  157. Guys please help me with my Jolida 102B!
  158. Philbrick GAP/R K2-W question
  159. First time baby Huey amplifier build
  160. 6LB6's....
  161. LMG Capacitor
  162. Meng 6PI Biasing Question
  163. AIKIDO LV WON'T START
  164. Under rating of Vertical Sweep Tubes
  165. Simple 845 tube monoblock design
  166. Running on filament only
  167. soft stat
  168. BJT Bias?
  169. Preamp Squeal
  170. Hammond L101 compensation cap
  171. Powering a headphone amplifier with DC filament supply
  172. new to this
  173. miniblok 1 voltage problem
  174. How will this affect my amp?
  175. Tetra Phono Builders...got problems!
  176. yagoolar's tube amp projects
  177. Base material of GEC KT88 Feb 1960
  178. Headphone amp with 6n2p valve on 12V
  179. pcc189 for audio use
  180. Reading material
  181. 2A3 rectifier
  182. help calibrating a mercury model 1000 tube tester
  183. 866a valve test
  184. Anybody in the Knoxville area?
  185. Looking for simple Push-Pull tricks (from Baby Huey) #1
  186. Why wire an output transformer as autoformer ? (parafeed)
  187. Measuring unwanted grid current
  188. Tube companies
  189. heathkit a7???guitar amp
  190. Hi Performance Pre amp
  191. HH Scott Type 209 Amp
  192. 6l6gb PP w/fixed bias?
  193. Holy cow! Can anyone tell me why this wire is so pricey?
  194. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  195. 4 x EL84 in UL PP, 470 B+!! is this right
  196. What amp is this?
  197. PS Setup For Testing
  198. OTL designed by Tim Mellow with 4 6C33C?
  199. Bassman 100 schematic questions
  200. Quick question on this schematic
  201. Variac, how to ?
  202. Tube data sheets - inaccuracy
  203. Benny's new ForeWatt SRPP pre amplifier
  204. OddWatt PP UL amplifier from scratch
  205. OPT Impedance
  206. Rectifier Valves
  207. WE311 amp
  208. Sherwood S8000 transformers
  209. yaqin MS-12B Search for Diagrams
  210. EICO HF-30 - Schematic
  211. 12AU7 Phono Stage
  212. How to install a motor run capcitor
  213. Sanity check on B+ regulator
  214. 6B4G PPP idea
  215. First OTL breadboarded
  216. New amp build
  217. Tube Parametric EQ - Idea looking for clarification
  218. Peavey Valveking 100- static sound during warm-up
  219. My Fender Twin Amp Not Working - get your guesses in
  220. DHT heater supply
  221. MC/MM Phono Pream PCB
  222. Help Identifying Old Westinghouse Tube Amp?
  223. GM70 SE Amplifier
  224. OPT considerations
  225. Help - the pre amp I made is not working!
  226. Aikido tube connections.
  227. EL34 PP output tranny questions
  228. DC heater voltage 6 volts or 12 volts?
  229. Dynaco st70....Can I use 6 ohm speakers?
  230. Aikido vs. Foreplay
  231. I found a valve amp in my garage...
  232. Separate PSU to Amp connection
  233. cheep miniure meters
  234. cary SLA 70
  235. Help!!! My Audioromy FU29 amplifier was fried!
  236. Help!!! My Audioromy FU29 amplifier was fried!
  237. Take a look at my transformers
  238. input transformer for Simple SE Tubelab amp
  239. miniblok 2 distorted sound
  240. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  241. For hk citation II owners\experts.
  242. Dynakit Mark III amplifier
  243. Transformer in reverse current doubt
  244. CELLINI-2 a hybrid
  245. Need help starting
  246. ARC (Audio Research) VT50
  247. mixed mode bias
  248. 2C52 datasheet
  249. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  250. 12v Tube amp

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