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  1. Best Dyna ST-70 rebuild kit?
  2. Help with tube wiring
  3. st70 problem
  4. Help with info on old valve amp
  5. Exceeding V-heater-cathode
  6. Cayin/Sparks A- 50T schematic.
  7. Looking for Bi siemens datasheet
  8. Transformers, transformers, transformers...
  9. Need ideas for my 6V6 from 1946 Blues / rockabilly
  10. Quasi complimentary output stage?
  11. 4ohm output transformer with 8ohm speaker
  12. First DIY project for a good power Amplifier
  13. Cherry red plates
  14. DIY triode
  15. First post/build
  16. New Transformer Vendor In Belgium
  17. KT88 grid stopper
  18. Connecting valve shields to earth
  19. Shindo MAZERIS BELLEVUS MODEL 454-2xAttenuator-How works this Circuit? 6067+12BH7
  20. Fixed bias failure B+ switch off protection
  21. Who can tell me where to buy Caddock MS220
  22. Uses for Quicksilver Transformers
  23. SE amp problem
  24. EL-34 to 6P3S-E
  25. 6922 sepp with Balanced Gains
  26. What path to choose for Hamonica amplifier?
  27. tubes for these OPT?, pri 1.75Kohm, sec 2.5, 4, 8ohm, taps 20%, weight 4Kg
  28. Turning a 6.3 V secondary into a 5 V secondary on an Antek 2T350
  29. gridchokes/output caps
  30. Can I build an MC30?
  31. Cathodyne: Can someone please help me fill in the blanks ?
  32. help hovland hp200
  33. 6SL7 and 6AS7 PP amplifier, design advice needed
  34. Project: Baldwin Tube Amp...
  35. Power Supply Input Capacitor - JE simple 45 question
  36. Tube output: Voltage or Current source?
  37. Edcor's new E-store website.....finally!
  38. Help complete the 300B schematic
  39. Confusion about a 5Y3GT rectifier
  40. Need advice on 300B circuit
  41. PCB in components
  42. new 6080 dc pp
  43. Single ended to balanced Aikido with mosfets in buffer position
  44. Simple LED power indicator light circuit?
  45. about 83 mercury rectifier
  46. Aikido Zo Calculation
  47. Pavane/ Psvane 845, 805, 211, 12AX7, 12AU7, 12AT7 and EL84
  48. Is this Telefunken fake or OEM?
  49. About Hmmmmm
  50. PRE-AMP PROJECT SRPP + HEADPHONE AMP
  51. 6BN11 vs 6CB6
  52. Is output stage local feedback necessary?
  53. Tube Longevity
  54. Power triode drive current requirements
  55. OPT Selection Question
  56. Recommend me a 6V6 P-P schematic
  57. Requesting advice on a pre-amp build. I'm working on asking realistic questions.
  58. So, im going to replace the Alps with a PEC...someone help?
  59. 13e1 se "shade" some questions
  60. My first build VTA ST-120
  61. World Wide Audio, model: HBP-97a, Hybrid Power Amplifier - info needed
  62. DIY 50C5 mini amp...
  63. So you think you have cool tubes?????
  64. Layout
  65. Looking to ID this amp
  66. Help me to make tube amply
  67. CAT SL1 SIGNATURE schematik phono
  68. Have anyone built this 6V6 amp?
  69. GU-50 in Single-Ended Triode Configuration - What bias points?
  70. DC coupling on a LTP? Opinions and help needed on Fred's design.
  71. Power Selection - Help Needed
  72. Which speaker with a 1/4W tube amp?
  73. 6973 VS 6CZ5 substitute
  74. Third Reich tubes
  75. Hello...and another ST-70 project.
  76. Home theater magic smoke...smoked and I think I heard a mirror crack...
  77. Scott LK48-B restoration
  78. 3 - 12AU7 Preamp. Is there such an animal?
  79. 300b filament
  80. resistor 880 ohms cathode
  81. Anyone have a Bugle Boy logo
  82. Change of circuit from triode to tetrode
  83. Need upgrade info for my Atma-Sphere Novacron Amps
  84. Whats Vintage Testing Equipment Do YOU Have/Use?
  85. JJ Kt77 Bias?
  86. tube rectified psu
  87. HELP!: my SET amp was turned off without a load and now it sound veiled!
  88. 5842 grid leak
  89. AMI Jukebox speaker impedence question
  90. Advice Needed: "Flabby" Amp Low-End
  91. Aikido transformer coupled output
  92. Audio measurements on tube amp. ? look here
  93. 12BH7A driver stage help
  94. Audio drive to g2 connected to g1 via 15K0
  95. KT88 SE Complete Kit
  96. Any high-end 6BM8 push pull tube amp schematic ?
  97. How a Triode Works
  98. EL3N substitute
  99. Magnavox AMP-185
  100. Best 6V6G that won't get me divorced..
  101. Shorted EL34 ?
  102. ARC VS60 hum in speaker
  103. Need help for a bias circuit
  104. Eico HF20 Output Txr Questions
  105. A Radford STA15 restoration story
  106. Tube Testing in DC Area
  107. Thorens PR24
  108. Newbie here with a couple questions
  109. 300B SwitchMode filament supply
  110. Mixed bias for balancing unmatched tubes in PPP?
  111. My First DIY Experience: An Aikido/Tetra Preamp
  112. how to test chokes for current and voltage
  113. pictures miniblok 1 and miniblok 2 by fred nachbaur
  114. Help with Aikido Preamp+class d amp
  115. will a PTX without center tap work?
  116. Anyone have information on 300B silvertone tube
  117. 6P14P push pull with low output
  118. passive 30Hz-20kHz Bandpass filter for tube preamp?
  119. My First Amp
  120. Frank's 6sn7 preamp
  121. My new 300B Amp
  122. help troubleshooting gradually distorting tube amp (dropping b+ voltage when hot)
  123. Tube Gear Supply/Surplus in Houston Area
  124. What 2a3 ?
  125. long tailed pair - need more gain
  126. how to bypass the volume pot on my SET amp?
  127. 2 stage AIKIDO
  128. Guys please help me with my Jolida 102B!
  129. Philbrick GAP/R K2-W question
  130. First time baby Huey amplifier build
  131. 6LB6's....
  132. Meng 6PI Biasing Question
  133. AIKIDO LV WON'T START
  134. Under rating of Vertical Sweep Tubes
  135. Simple 845 tube monoblock design
  136. Running on filament only
  137. soft stat
  138. BJT Bias?
  139. Preamp Squeal
  140. Hammond L101 compensation cap
  141. Powering a headphone amplifier with DC filament supply
  142. new to this
  143. miniblok 1 voltage problem
  144. How will this affect my amp?
  145. Tetra Phono Builders...got problems!
  146. yagoolar's tube amp projects
  147. Base material of GEC KT88 Feb 1960
  148. Headphone amp with 6n2p valve on 12V
  149. pcc189 for audio use
  150. Reading material
  151. 2A3 rectifier
  152. help calibrating a mercury model 1000 tube tester
  153. 866a valve test
  154. Anybody in the Knoxville area?
  155. Looking for simple Push-Pull tricks (from Baby Huey) #1
  156. Why wire an output transformer as autoformer ? (parafeed)
  157. Measuring unwanted grid current
  158. Tube companies
  159. Hi Performance Pre amp
  160. HH Scott Type 209 Amp
  161. 6l6gb PP w/fixed bias?
  162. Holy cow! Can anyone tell me why this wire is so pricey?
  163. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  164. 4 x EL84 in UL PP, 470 B+!! is this right
  165. What amp is this?
  166. PS Setup For Testing
  167. OTL designed by Tim Mellow with 4 6C33C?
  168. Quick question on this schematic
  169. Variac, how to ?
  170. Tube data sheets - inaccuracy
  171. Benny's new ForeWatt SRPP pre amplifier
  172. OddWatt PP UL amplifier from scratch
  173. OPT Impedance
  174. Rectifier Valves
  175. WE311 amp
  176. Sherwood S8000 transformers
  177. yaqin MS-12B Search for Diagrams
  178. EICO HF-30 - Schematic
  179. 12AU7 Phono Stage
  180. How to install a motor run capcitor
  181. Sanity check on B+ regulator
  182. 6B4G PPP idea
  183. First OTL breadboarded
  184. New amp build
  185. Tube Parametric EQ - Idea looking for clarification
  186. DHT heater supply
  187. MC/MM Phono Pream PCB
  188. Help Identifying Old Westinghouse Tube Amp?
  189. GM70 SE Amplifier
  190. OPT considerations
  191. Help - the pre amp I made is not working!
  192. Aikido tube connections.
  193. EL34 PP output tranny questions
  194. DC heater voltage 6 volts or 12 volts?
  195. Dynaco st70....Can I use 6 ohm speakers?
  196. Aikido vs. Foreplay
  197. I found a valve amp in my garage...
  198. Separate PSU to Amp connection
  199. cheep miniure meters
  200. cary SLA 70
  201. Help!!! My Audioromy FU29 amplifier was fried!
  202. Help!!! My Audioromy FU29 amplifier was fried!
  203. Take a look at my transformers
  204. input transformer for Simple SE Tubelab amp
  205. miniblok 2 distorted sound
  206. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  207. For hk citation II owners\experts.
  208. Dynakit Mark III amplifier
  209. Transformer in reverse current doubt
  210. CELLINI-2 a hybrid
  211. Need help starting
  212. ARC (Audio Research) VT50
  213. mixed mode bias
  214. 2C52 datasheet
  215. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  216. 12v Tube amp
  217. Is this ok
  218. 12ax7 Bass Preamp Power Supply Question.
  219. Help a newbie out with his Sherwood S-800iii
  220. A&R 4008 output transformers
  221. Kulish Circuit
  222. A little digression= read on
  223. Sweep tubes and G3
  224. CCS - Help!
  225. Another odd-ball PA amplifier
  226. Question About High-Fidelity Magazine 195x - 196x
  227. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  228. who have schematic of Phenix OTL G3?
  229. CHAMP8 with ECLL800
  230. Drive requirements.....
  231. KT88 hybrid amplifier
  232. 2300 ohm vs 5000 ohm output trans question
  233. Has anyone used this regulator?
  234. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  235. Current mirror circuits
  236. splitter/driver stage
  237. Would someone explain this amp to me please?
  238. What am I experiencing?
  239. 6U10, 6AC10, 6D10, 6AV11
  240. My debut into the vacuum world: Yarland FV34B
  241. Resistor value tweaks for Radford STA35
  242. do you own a chinese tube integrate? does it.... smell?
  243. Needs help to find transformer
  244. 12AU7 / 12AX7 push-pull
  245. Subwoofer connection?
  246. Ultra-low Noise Valve Regulated PSU. How to?
  247. One channel has less glow
  248. 6l6 tube amp troubleshooring progress
  249. Baldwin organ transformers
  250. has anyone used a chip for an input driver to a 2A3 or the like??

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