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  1. Yet another nutty idea - don't say I didn't warn
  2. Need help calibrating a Hickok 6000 Chicago
  3. need someone to run a sim in PSUD2...my PC is down and my MAC wont runt the program!!
  4. Building an B-15-inspired amp
  5. China preamp Xiang Sheng 768A
  6. RE: Fisher 200 tube amp fuse blowing issue
  7. How do you match output tubes?
  8. Best Dyna ST-70 rebuild kit?
  9. Help with tube wiring
  10. Decided on Gibson GA 20 need layout drawings etc.
  11. st70 problem
  12. Help with info on old valve amp
  13. Exceeding V-heater-cathode
  14. Cayin/Sparks A- 50T schematic.
  15. Looking for Bi siemens datasheet
  16. Transformers, transformers, transformers...
  17. Need ideas for my 6V6 from 1946 Blues / rockabilly
  18. Quasi complimentary output stage?
  19. 4ohm output transformer with 8ohm speaker
  20. First DIY project for a good power Amplifier
  21. Cherry red plates
  22. DIY triode
  23. First post/build
  24. New Transformer Vendor In Belgium
  25. KT88 grid stopper
  26. Connecting valve shields to earth
  27. Shindo MAZERIS BELLEVUS MODEL 454-2xAttenuator-How works this Circuit? 6067+12BH7
  28. Fixed bias failure B+ switch off protection
  29. Who can tell me where to buy Caddock MS220
  30. Uses for Quicksilver Transformers
  31. SE amp problem
  32. EL-34 to 6P3S-E
  33. 6922 sepp with Balanced Gains
  34. What path to choose for Hamonica amplifier?
  35. tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
  36. Turning a 6.3 V secondary into a 5 V secondary on an Antek 2T350
  37. gridchokes/output caps
  38. Can I build an MC30?
  39. Cathodyne: Can someone please help me fill in the blanks ?
  40. help hovland hp200
  41. 6SL7 and 6AS7 PP amplifier, design advice needed
  42. Project: Baldwin Tube Amp...
  43. Power Supply Input Capacitor - JE simple 45 question
  44. Tube output: Voltage or Current source?
  45. Edcor's new E-store website.....finally!
  46. Help complete the 300B schematic
  47. Confusion about a 5Y3GT rectifier
  48. Need advice on 300B circuit
  49. PCB in components
  50. new 6080 dc pp
  51. Single ended to balanced Aikido with mosfets in buffer position
  52. Simple LED power indicator light circuit?
  53. about 83 mercury rectifier
  54. Aikido Zo Calculation
  55. Line out issue - 1965 Ampeg B-18-N
  56. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  57. Is this Telefunken fake or OEM?
  58. About Hmmmmm
  59. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  60. 6BN11 vs 6CB6
  61. Is output stage local feedback necessary?
  62. Tube Longevity
  63. Power triode drive current requirements
  64. OPT Selection Question
  65. Recommend me a 6V6 P-P schematic
  66. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  67. So, im going to replace the Alps with a PEC...someone help?
  68. 13e1 se "shade" some questions
  69. Pio russian capacitor K42-11...is good ?
  70. My first build VTA ST-120
  71. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  72. DIY 50C5 mini amp...
  73. So you think you have cool tubes?????
  74. Layout
  75. Looking to ID this amp
  76. Help me to make tube amply
  77. CAT SL1 SIGNATURE schematik phono
  78. Have anyone built this 6V6 amp?
  79. GU-50 in Single-Ended Triode Configuration - What bias points?
  80. DC coupling on a LTP? Opinions and help needed on Fred's design.
  81. Power Selection - Help Needed
  82. Which speaker with a 1/4W tube amp?
  83. 6973 VS 6CZ5 substitute
  84. Third Reich tubes
  85. Hello...and another ST-70 project.
  86. Home theater magic smoke...smoked and I think I heard a mirror crack...
  87. Scott LK48-B restoration
  88. 3 - 12AU7 Preamp. Is there such an animal?
  89. 300b filament
  90. resistor 880 ohms cathode
  91. Anyone have a Bugle Boy logo
  92. Change of circuit from triode to tetrode
  93. Need upgrade info for my Atma-Sphere Novacron Amps
  94. Whats Vintage Testing Equipment Do YOU Have/Use?
  95. JJ Kt77 Bias?
  96. tube rectified psu
  97. HELP!: my SET amp was turned off without a load and now it sound veiled!
  98. 5842 grid leak
  99. AMI Jukebox speaker impedence question
  100. Advice Needed: "Flabby" Amp Low-End
  101. Aikido transformer coupled output
  102. Audio measurements on tube amp. ? look here
  103. 12BH7A driver stage help
  104. Audio drive to g2 connected to g1 via 15K0
  105. KT88 SE Complete Kit
  106. Any high-end 6BM8 push pull tube amp schematic ?
  107. How a Triode Works
  108. EL3N substitute
  109. Magnavox AMP-185
  110. Best 6V6G that won't get me divorced..
  111. Shorted EL34 ?
  112. ARC VS60 hum in speaker
  113. Need help for a bias circuit
  114. Eico HF20 Output Txr Questions
  115. A Radford STA15 restoration story
  116. Tube Testing in DC Area
  117. Thorens PR24
  118. Newbie here with a couple questions
  119. 300B SwitchMode filament supply
  120. Mixed bias for balancing unmatched tubes in PPP?
  121. My First DIY Experience: An Aikido/Tetra Preamp
  122. how to test chokes for current and voltage
  123. pictures miniblok 1 and miniblok 2 by fred nachbaur
  124. Help with Aikido Preamp+class d amp
  125. will a PTX without center tap work?
  126. Anyone have information on 300B silvertone tube
  127. 6P14P push pull with low output
  128. passive 30Hz-20kHz Bandpass filter for tube preamp?
  129. My First Amp
  130. Frank's 6sn7 preamp
  131. My new 300B Amp
  132. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  133. Tube Gear Supply/Surplus in Houston Area
  134. What 2a3 ?
  135. long tailed pair - need more gain
  136. how to bypass the volume pot on my SET amp?
  137. 2 stage AIKIDO
  138. Guys please help me with my Jolida 102B!
  139. Philbrick GAP/R K2-W question
  140. First time baby Huey amplifier build
  141. 6LB6's....
  142. LMG Capacitor
  143. Meng 6PI Biasing Question
  144. AIKIDO LV WON'T START
  145. Under rating of Vertical Sweep Tubes
  146. Simple 845 tube monoblock design
  147. Running on filament only
  148. soft stat
  149. BJT Bias?
  150. Preamp Squeal
  151. Hammond L101 compensation cap
  152. Powering a headphone amplifier with DC filament supply
  153. new to this
  154. miniblok 1 voltage problem
  155. How will this affect my amp?
  156. Tetra Phono Builders...got problems!
  157. yagoolar's tube amp projects
  158. Base material of GEC KT88 Feb 1960
  159. Headphone amp with 6n2p valve on 12V
  160. pcc189 for audio use
  161. Reading material
  162. 2A3 rectifier
  163. help calibrating a mercury model 1000 tube tester
  164. 866a valve test
  165. Anybody in the Knoxville area?
  166. Looking for simple Push-Pull tricks (from Baby Huey) #1
  167. Why wire an output transformer as autoformer ? (parafeed)
  168. Measuring unwanted grid current
  169. Tube companies
  170. heathkit a7???guitar amp
  171. Hi Performance Pre amp
  172. HH Scott Type 209 Amp
  173. 6l6gb PP w/fixed bias?
  174. Holy cow! Can anyone tell me why this wire is so pricey?
  175. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  176. 4 x EL84 in UL PP, 470 B+!! is this right
  177. What amp is this?
  178. PS Setup For Testing
  179. OTL designed by Tim Mellow with 4 6C33C?
  180. Bassman 100 schematic questions
  181. Quick question on this schematic
  182. Variac, how to ?
  183. Tube data sheets - inaccuracy
  184. Benny's new ForeWatt SRPP pre amplifier
  185. OddWatt PP UL amplifier from scratch
  186. OPT Impedance
  187. Rectifier Valves
  188. WE311 amp
  189. Sherwood S8000 transformers
  190. yaqin MS-12B Search for Diagrams
  191. EICO HF-30 - Schematic
  192. 12AU7 Phono Stage
  193. How to install a motor run capcitor
  194. Sanity check on B+ regulator
  195. 6B4G PPP idea
  196. First OTL breadboarded
  197. New amp build
  198. Tube Parametric EQ - Idea looking for clarification
  199. Peavey Valveking 100- static sound during warm-up
  200. My Fender Twin Amp Not Working - get your guesses in
  201. DHT heater supply
  202. MC/MM Phono Pream PCB
  203. Help Identifying Old Westinghouse Tube Amp?
  204. GM70 SE Amplifier
  205. OPT considerations
  206. Help - the pre amp I made is not working!
  207. Aikido tube connections.
  208. EL34 PP output tranny questions
  209. DC heater voltage 6 volts or 12 volts?
  210. Dynaco st70....Can I use 6 ohm speakers?
  211. Aikido vs. Foreplay
  212. I found a valve amp in my garage...
  213. Separate PSU to Amp connection
  214. cheep miniure meters
  215. cary SLA 70
  216. Help!!! My Audioromy FU29 amplifier was fried!
  217. Help!!! My Audioromy FU29 amplifier was fried!
  218. Take a look at my transformers
  219. input transformer for Simple SE Tubelab amp
  220. miniblok 2 distorted sound
  221. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  222. For hk citation II owners\experts.
  223. Dynakit Mark III amplifier
  224. Transformer in reverse current doubt
  225. CELLINI-2 a hybrid
  226. Need help starting
  227. ARC (Audio Research) VT50
  228. mixed mode bias
  229. 2C52 datasheet
  230. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  231. 12v Tube amp
  232. Is this ok
  233. 12ax7 Bass Preamp Power Supply Question.
  234. Help a newbie out with his Sherwood S-800iii
  235. A&R 4008 output transformers
  236. Kulish Circuit
  237. A little digression= read on
  238. Sweep tubes and G3
  239. CCS - Help!
  240. Another odd-ball PA amplifier
  241. 25W with 2xEL86(6CW5)!
  242. Question About High-Fidelity Magazine 195x - 196x
  243. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  244. who have schematic of Phenix OTL G3?
  245. CHAMP8 with ECLL800
  246. Drive requirements.....
  247. KT88 hybrid amplifier
  248. 2300 ohm vs 5000 ohm output trans question
  249. Has anyone used this regulator?
  250. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier

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