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  1. Any tube-sleuths out there know who made these Daystrom tubes?
  2. With this meter reading, enough to know Fuse is the culprit?
  3. need comments on amp design
  4. KEF/Celestion speakers for tube use...
  5. Another cheap fix - MOT as plate choke.
  6. XAM Mark II B
  7. How to test voltages on secondaries?
  8. Audio innovation L1 valve replacement
  9. Is this in-rush current?
  10. TETRODE amplifiers
  11. Audio Shop Eifl Corporation
  12. 6sn7 Buffer
  13. Marantz 8b operating voltages
  14. amplifier with 813 valves
  15. Changing plate resistor in live circuitry.
  16. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  17. KT88 drivers
  18. Simple Hybrid SE EL84 UL amp.. comments please.
  19. max input impedance for // el84's and other ?
  20. Please Help.. PCL81
  21. Some troubles with PSUD. A little help please !
  22. Why D getters?
  23. Help me information of the tubes?
  24. Questions about this line stage
  25. 5Z4P rectifier tube question
  26. Need help from Aikido builder
  27. Aikesi賍机el34尋找國外代理,可以送一台!!
  28. Direct heating triodes are really better?
  29. Audio Reality is back, in digital format
  30. Stoetkit 25W integrated amp
  31. Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
  32. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  33. Michaelson Audio Odysseus Problem.
  34. ASC metal can polypro caps: ground the metal can to AC ground?
  35. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  36. ReinoutdV
  37. Priboj amp schematic
  38. EL84 in ultra-linear mode
  39. internal shielding
  40. RIAA: what does it stand for?
  41. Socket Mounting Rings
  42. heathkit sa2 - new question
  43. RCA R35, 39 & 57 Terminal Usage...
  44. 45 into an 845 parafeed circuit
  45. Tubes power supply 220 t0 300V ?
  46. ripple values in B+ supply
  47. Capacitors and tubes for AA5?
  48. Dynaco PAS Rebuild
  49. Audio Research SP9 Circuit Diagram HELP!
  50. ARC reference II schematic
  51. 71a Line Stage and Miller Capacitance
  52. Low plate voltage pentode (<40v) for diff pair?
  53. loadlines for newbie.
  54. Measuring approx RMS power O/P
  55. Hybrid Aikido-ish gain stage
  56. Loftin-White coupling Questions
  57. 807 screen regulation
  58. What kills an opt tranny?
  59. EAR529 schematic diagram
  60. World Designs KEL84 Valve Amplifier
  61. what 300B design would you recommend but...
  62. Replacement conductance meter for Hickok 533A
  63. My RIAA Phono Stage Project
  64. A2 Questions
  65. World Audio Design
  66. Seek for your comments/advice to newbie on Tube world
  67. CCSed LTP validity?
  68. Suitability of transmitter tubes for musical amplifiers
  69. Anyone using an 813 in pentode?
  70. Electrolytic in the feedback loop
  71. El34 PP Vs. El34 PSE
  72. RIAA Phono Amp Design
  73. Matching resistors to 1% or Better
  74. Wirewound cathode resistor
  75. Tube Hybrid Amp.
  76. Nasty ground loop
  77. ECC88 Class B
  78. Cree diodes
  79. Old Tube Amp Servicer In Nj???
  80. Vg-k max
  81. Anyone used PT15 / VT104 ?
  82. rebuild a Musical Fidelity X-10D ??
  83. Transformer Building
  84. Identifying weird signal transformer
  85. 100watt mono blocks
  86. Resistor combination calculator - RESCALC
  87. Aikido choice of valves (or tubes, if you will)
  88. Pin 9 on 6n6P, 6H30, etc
  89. Croft Super Micro meets Acoustat TNT200
  90. tube mic preamp kit??
  91. The SACD Meets Tubes
  92. Useful Abbreviations
  93. cap value for 6X4 rectifier?
  94. One B+ for the both driver and output tube if they are identical?
  95. Fisher 500B Schematic Question
  96. SE Output Transfromers Question
  97. Amplifier Project
  98. Grid Stopper for parallel sides of dual triode
  99. centre tap or floating heaters?
  100. Converting 6.3V to 6.3VCT Quick questions
  101. Russian Nuvistors...Anyone tried them?
  102. 一台300bc胆机,大家给点意见,谢谢
  103. Australian Amp Manufacturers
  104. Old radio quick question re PS
  105. Kt90 Pse
  106. Velleman K4040 is Always Blowing Output Tubes
  107. looking for transformer with the following specs?
  108. 5686 amplifier schematic
  109. Heaters for cathodes with a large swing
  110. 6DJ8 as phase splitter.
  111. New driver for SE 2A3
  112. I磛e made a Mu stage with 6888 and 6C45...
  113. Quick urgent Help plz !
  114. Cheap SET Kit for UK
  115. How can I change bias 6H30pi tube
  116. DHT heater voltage
  117. Ok SY...You Win
  118. Input level required- PP KT88
  119. SE 6C33C-B ; preview of a new Baby
  120. 2A3 grid DC voltage
  121. Dyna ST70 experience bypassing input tubes
  122. [Theory] Amplifier efficiency
  123. Pentode Cascode CCS
  124. Noval Relay
  125. Where to buy 6A5G ?
  126. AC or grounded DC for heater?
  127. EM84 based VUmeter "lines" don't go to zero
  128. 'scoping tube amps
  129. Preferred operating points of small signal triodes
  130. Is the Nuvistor Better Than The 12B4 For A Line Stage
  131. audio research schematics
  132. Looking to put the entire (last edition) RCA and Sylvania books online
  133. 5693 as a phono preamp?
  134. Audible Illusions Dual Mono Preamplifier
  135. should the filaments be already hot before the B+ is applied or
  136. One Electron vs. Transcendar
  137. &quot;Y&quot; caps? current bleed?
  138. I made a 200W tube amp!
  139. Power amp kit for a complete newbie
  140. Confused, datasheet of 417A/5842
  141. Audio Amp Project
  142. Tube tester settings?
  143. Neutrik XLR for Umbilical
  144. Primary Impedance
  145. Need help for HV section Design
  146. power amp kit recommendations
  147. 6N6P vs 5687
  148. Triode spice models for Circuit maker
  149. My ARC D70 get trouble
  150. when using PSUD2, do you...
  151. Depression... and a plea for help!!!
  152. Weston 981 Type 3 schematic and parts list needed
  153. 3W 6C33B-C SE OTL schematics ready
  154. Batory tubes, anyone familiar with these?
  155. Musical Pre-amp topology needed. Interstages please apply!
  156. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  157. PowerDrive Circuit for 805 (+ve grid bias)
  158. Alternate spice models
  159. Is this heater supply OK?
  160. Basic RC Value Question
  161. Hookup powersubwoofer to a tube receiver.
  162. Transformer question RE; connections on phono stage
  163. Rectifier Tubes Data - Quick Sheet
  164. Which cabling to use?
  165. Need 396A/6N3P/2C51/407A spice model
  166. Antek Toroidal Power Transformers
  167. HT stands for???
  168. Is it possible to hook up 6c33 plate in parallel
  169. Help eliminating hum
  170. Tube LTP CCS?
  171. Trancsendar Transformers
  172. Hafler/Keroes 6L6 UL
  173. hum
  174. Leads for ISCO PS?
  175. Negative Feedback Bogen CHB100
  176. TubeCad's Hybrid amp question
  177. Cathode bias resistor value for 6SN7?
  178. El84 2-Channel Mono Blocks
  179. Tube Design Books
  180. Interesting Williamson article..
  181. Locating Preamp Output Transformers
  182. Plate characteristics
  183. How do you finance A Great DIY Audio Amp?
  184. 808 Se
  185. Parafeed doubt
  186. A little research: old tube amps from the past
  187. RCA Victor stereo cabinet amp-newb question
  188. Transformer temperature?
  189. switch in SPICE
  190. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  191. Tube testers which is the best?
  192. finished !!!
  193. Transformer Leg Connection Question
  194. simple ccs under 5-10mA ?
  195. Curcio Sarah Phono stage: opinions?
  196. suggest a KT88 SE to build
  197. Transformer potting material??
  198. Jan E Veiset Mini EL84 pp
  199. Some questions on non common things
  200. basic question on plate curves
  201. Euro barrier strip palace
  202. ARC D90 needs new electrolytics
  203. 5763 Triode Strapped
  204. Recommend me some transformers for a PP EL84
  205. grid LED bias?
  206. Help on tube socket
  207. Taking CFB to the extremes...?
  208. Output section impedance change query
  209. Tube Suggestions
  210. 82 Popped
  211. OPT Project for EL84 SE
  212. Interesting eBay "listing" for tube amp
  213. How to chose the right choke
  214. Eco warrior thinking of jumping ship !!!
  215. HELP! Cathode bypass caps keep going...
  216. Best Operating point for a 2A3?
  217. Need help with preamp
  218. Best place to buy valves and components?
  219. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  220. Circuit calculations
  221. Finally going to give my TVC/active preamp a real home...
  222. Suggestion on the input transformer for tube preamp
  223. sylvania & GE tubes
  224. SE Amplifier
  225. "fisss" on the 6C33C-pp
  226. Best price for tube output and power transformers ?
  227. What kind of output transformer?
  228. transformer
  229. 20W PP Choke PSU Question
  230. Regulated B+ supplies (using tubes)
  231. Confused by the numbers
  232. Feedback on Thorsten's legacy "universal dht" amp
  233. Are there techniques for triode-strapping on the fly?
  234. The best bias point for KT88
  235. All tube CCS
  236. GU50 SE Amplifier class A , with 6SN7 Full construction details
  237. 50L6GT & 6L6GT sounds ??
  238. Especially for Tubelab: 845 amp 2.0
  239. Powerdrive
  240. Filament voltage and affect on Rp
  241. Tube pre-amplifier PSU
  242. Help with a cathode coupled pentode driver?
  243. Amp that has the biggest number of irons
  244. 12AX7A replacement
  245. Bogen CHB-10A Conversion, need help and advice
  246. Who said it was a good idea to try pentode!
  247. Input level
  248. 6V6GT
  249. 6AR6
  250. Any TCJ Push-Pull Calculator users?

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