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  1. NOS pF capacitors voltage rating?
  2. Tubes in Vietnam
  3. Passive pre order?
  4. layout help
  5. junkbox amp help
  6. required specs of an input step up transformer, into a 45, to allow it drive an 845
  7. 6as7 SRPP output stage
  8. Bias range and selenium rectifier
  9. OTL's and aircraft transformers
  10. PSE EL34 - valve rectification question
  11. A 2a3 Amplifier
  12. James Transformer BS
  13. Plate Voltage on 12ax7a
  14. Parallel Triodes and Load Lines
  15. Steve Bench OTL
  16. High power P-P EL34/6550/KT88 amp suggestions
  17. Stepped attenuators - break before make?
  18. audionote 144 OPT comment pls...
  19. KT88 and Hammond Transformer Schematics
  20. How do I know that my measured AC voltage is precise?
  21. 6C33B-C push pull with output transformer
  22. EL84 grid voltage?
  23. seperate power supply?
  24. Mysterious tektronix power supply
  25. tube amp subwoofer hum problem
  26. How to test transformer's current rating?
  27. Death/Black Metal sound on Crate 6212
  28. 4654/4699 pentodes
  29. Output tubes on a Marshall JCM900
  30. vacuum tube logic gate
  31. Screen current
  32. Any tube-sleuths out there know who made these Daystrom tubes?
  33. With this meter reading, enough to know Fuse is the culprit?
  34. need comments on amp design
  35. KEF/Celestion speakers for tube use...
  36. Another cheap fix - MOT as plate choke.
  37. XAM Mark II B
  38. How to test voltages on secondaries?
  39. Audio innovation L1 valve replacement
  40. Is this in-rush current?
  41. TETRODE amplifiers
  42. Audio Shop Eifl Corporation
  43. 6sn7 Buffer
  44. Marantz 8b operating voltages
  45. amplifier with 813 valves
  46. Changing plate resistor in live circuitry.
  47. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  48. KT88 drivers
  49. Simple Hybrid SE EL84 UL amp.. comments please.
  50. max input impedance for // el84's and other ?
  51. Please Help.. PCL81
  52. Some troubles with PSUD. A little help please !
  53. Why D getters?
  54. Help me information of the tubes?
  55. Questions about this line stage
  56. 5Z4P rectifier tube question
  57. Need help from Aikido builder
  58. Aikesi賍机el34尋找國外代理,可以送一台!!
  59. Direct heating triodes are really better?
  60. Audio Reality is back, in digital format
  61. Stoetkit 25W integrated amp
  62. Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
  63. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  64. Michaelson Audio Odysseus Problem.
  65. ASC metal can polypro caps: ground the metal can to AC ground?
  66. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  67. ReinoutdV
  68. Priboj amp schematic
  69. EL84 in ultra-linear mode
  70. internal shielding
  71. RIAA: what does it stand for?
  72. Socket Mounting Rings
  73. heathkit sa2 - new question
  74. RCA R35, 39 & 57 Terminal Usage...
  75. 45 into an 845 parafeed circuit
  76. Tubes power supply 220 t0 300V ?
  77. ripple values in B+ supply
  78. Capacitors and tubes for AA5?
  79. Dynaco PAS Rebuild
  80. Audio Research SP9 Circuit Diagram HELP!
  81. ARC reference II schematic
  82. 71a Line Stage and Miller Capacitance
  83. Low plate voltage pentode (<40v) for diff pair?
  84. loadlines for newbie.
  85. Measuring approx RMS power O/P
  86. Hybrid Aikido-ish gain stage
  87. Loftin-White coupling Questions
  88. 807 screen regulation
  89. What kills an opt tranny?
  90. EAR529 schematic diagram
  91. World Designs KEL84 Valve Amplifier
  92. what 300B design would you recommend but...
  93. Replacement conductance meter for Hickok 533A
  94. My RIAA Phono Stage Project
  95. A2 Questions
  96. World Audio Design
  97. Seek for your comments/advice to newbie on Tube world
  98. CCSed LTP validity?
  99. Suitability of transmitter tubes for musical amplifiers
  100. Anyone using an 813 in pentode?
  101. Electrolytic in the feedback loop
  102. El34 PP Vs. El34 PSE
  103. RIAA Phono Amp Design
  104. Matching resistors to 1% or Better
  105. Wirewound cathode resistor
  106. Tube Hybrid Amp.
  107. Nasty ground loop
  108. ECC88 Class B
  109. Cree diodes
  110. Old Tube Amp Servicer In Nj???
  111. Vg-k max
  112. Anyone used PT15 / VT104 ?
  113. rebuild a Musical Fidelity X-10D ??
  114. Transformer Building
  115. Identifying weird signal transformer
  116. 100watt mono blocks
  117. Resistor combination calculator - RESCALC
  118. Aikido choice of valves (or tubes, if you will)
  119. Pin 9 on 6n6P, 6H30, etc
  120. Croft Super Micro meets Acoustat TNT200
  121. tube mic preamp kit??
  122. The SACD Meets Tubes
  123. Useful Abbreviations
  124. cap value for 6X4 rectifier?
  125. One B+ for the both driver and output tube if they are identical?
  126. Fisher 500B Schematic Question
  127. SE Output Transfromers Question
  128. Amplifier Project
  129. Grid Stopper for parallel sides of dual triode
  130. centre tap or floating heaters?
  131. Converting 6.3V to 6.3VCT Quick questions
  132. Russian Nuvistors...Anyone tried them?
  133. 一台300bc胆机,大家给点意见,谢谢
  134. Australian Amp Manufacturers
  135. Old radio quick question re PS
  136. Kt90 Pse
  137. Velleman K4040 is Always Blowing Output Tubes
  138. looking for transformer with the following specs?
  139. 5686 amplifier schematic
  140. Heaters for cathodes with a large swing
  141. 6DJ8 as phase splitter.
  142. New driver for SE 2A3
  143. I磛e made a Mu stage with 6888 and 6C45...
  144. Quick urgent Help plz !
  145. Cheap SET Kit for UK
  146. How can I change bias 6H30pi tube
  147. DHT heater voltage
  148. Ok SY...You Win
  149. Input level required- PP KT88
  150. SE 6C33C-B ; preview of a new Baby
  151. 2A3 grid DC voltage
  152. Dyna ST70 experience bypassing input tubes
  153. [Theory] Amplifier efficiency
  154. Pentode Cascode CCS
  155. Noval Relay
  156. Where to buy 6A5G ?
  157. AC or grounded DC for heater?
  158. EM84 based VUmeter "lines" don't go to zero
  159. 'scoping tube amps
  160. Preferred operating points of small signal triodes
  161. Is the Nuvistor Better Than The 12B4 For A Line Stage
  162. audio research schematics
  163. Looking to put the entire (last edition) RCA and Sylvania books online
  164. 5693 as a phono preamp?
  165. Audible Illusions Dual Mono Preamplifier
  166. should the filaments be already hot before the B+ is applied or
  167. One Electron vs. Transcendar
  168. &quot;Y&quot; caps? current bleed?
  169. I made a 200W tube amp!
  170. Power amp kit for a complete newbie
  171. Confused, datasheet of 417A/5842
  172. Audio Amp Project
  173. Tube tester settings?
  174. Neutrik XLR for Umbilical
  175. Primary Impedance
  176. Need help for HV section Design
  177. power amp kit recommendations
  178. 6N6P vs 5687
  179. Triode spice models for Circuit maker
  180. My ARC D70 get trouble
  181. when using PSUD2, do you...
  182. Depression... and a plea for help!!!
  183. Weston 981 Type 3 schematic and parts list needed
  184. 3W 6C33B-C SE OTL schematics ready
  185. Batory tubes, anyone familiar with these?
  186. Musical Pre-amp topology needed. Interstages please apply!
  187. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  188. PowerDrive Circuit for 805 (+ve grid bias)
  189. Alternate spice models
  190. Is this heater supply OK?
  191. Basic RC Value Question
  192. Hookup powersubwoofer to a tube receiver.
  193. Transformer question RE; connections on phono stage
  194. Rectifier Tubes Data - Quick Sheet
  195. Now This is A Tube Guitar Amp!!
  196. Which cabling to use?
  197. Need 396A/6N3P/2C51/407A spice model
  198. Antek Toroidal Power Transformers
  199. HT stands for???
  200. Is it possible to hook up 6c33 plate in parallel
  201. Help eliminating hum
  202. Tube LTP CCS?
  203. Trancsendar Transformers
  204. Hafler/Keroes 6L6 UL
  205. hum
  206. Leads for ISCO PS?
  207. Negative Feedback Bogen CHB100
  208. TubeCad's Hybrid amp question
  209. Cathode bias resistor value for 6SN7?
  210. El84 2-Channel Mono Blocks
  211. Tube Design Books
  212. Interesting Williamson article..
  213. Locating Preamp Output Transformers
  214. Plate characteristics
  215. How do you finance A Great DIY Audio Amp?
  216. 808 Se
  217. Parafeed doubt
  218. A little research: old tube amps from the past
  219. RCA Victor stereo cabinet amp-newb question
  220. Transformer temperature?
  221. switch in SPICE
  222. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  223. Tube testers which is the best?
  224. finished !!!
  225. Transformer Leg Connection Question
  226. simple ccs under 5-10mA ?
  227. Curcio Sarah Phono stage: opinions?
  228. suggest a KT88 SE to build
  229. Transformer potting material??
  230. Jan E Veiset Mini EL84 pp
  231. Some questions on non common things
  232. basic question on plate curves
  233. Euro barrier strip palace
  234. ARC D90 needs new electrolytics
  235. 5763 Triode Strapped
  236. Recommend me some transformers for a PP EL84
  237. grid LED bias?
  238. Help on tube socket
  239. Taking CFB to the extremes...?
  240. Output section impedance change query
  241. Tube Suggestions
  242. 82 Popped
  243. OPT Project for EL84 SE
  244. Interesting eBay "listing" for tube amp
  245. How to chose the right choke
  246. Eco warrior thinking of jumping ship !!!
  247. HELP! Cathode bypass caps keep going...
  248. Best Operating point for a 2A3?
  249. Need help with preamp
  250. Best place to buy valves and components?

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