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  1. 5Z4P rectifier tube question
  2. Need help from Aikido builder
  3. Aikesi賍机el34尋找國外代理,可以送一台!!
  4. Direct heating triodes are really better?
  5. Audio Reality is back, in digital format
  6. Stoetkit 25W integrated amp
  7. Switchable stages with Tubelab抯 hybrid MOSFET/ 845 SE amp?
  8. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  9. Michaelson Audio Odysseus Problem.
  10. ASC metal can polypro caps: ground the metal can to AC ground?
  11. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  12. ReinoutdV
  13. Priboj amp schematic
  14. EL84 in ultra-linear mode
  15. internal shielding
  16. RIAA: what does it stand for?
  17. Socket Mounting Rings
  18. heathkit sa2 - new question
  19. RCA R35, 39 & 57 Terminal Usage...
  20. 45 into an 845 parafeed circuit
  21. Tubes power supply 220 t0 300V ?
  22. ripple values in B+ supply
  23. Capacitors and tubes for AA5?
  24. Dynaco PAS Rebuild
  25. Audio Research SP9 Circuit Diagram HELP!
  26. ARC reference II schematic
  27. 71a Line Stage and Miller Capacitance
  28. Low plate voltage pentode (<40v) for diff pair?
  29. loadlines for newbie.
  30. Measuring approx RMS power O/P
  31. Hybrid Aikido-ish gain stage
  32. Loftin-White coupling Questions
  33. 807 screen regulation
  34. What kills an opt tranny?
  35. EAR529 schematic diagram
  36. World Designs KEL84 Valve Amplifier
  37. what 300B design would you recommend but...
  38. Replacement conductance meter for Hickok 533A
  39. My RIAA Phono Stage Project
  40. A2 Questions
  41. World Audio Design
  42. Seek for your comments/advice to newbie on Tube world
  43. CCSed LTP validity?
  44. Suitability of transmitter tubes for musical amplifiers
  45. Anyone using an 813 in pentode?
  46. Electrolytic in the feedback loop
  47. El34 PP Vs. El34 PSE
  48. RIAA Phono Amp Design
  49. Matching resistors to 1% or Better
  50. Wirewound cathode resistor
  51. Tube Hybrid Amp.
  52. Nasty ground loop
  53. ECC88 Class B
  54. Cree diodes
  55. Old Tube Amp Servicer In Nj???
  56. Vg-k max
  57. Anyone used PT15 / VT104 ?
  58. rebuild a Musical Fidelity X-10D ??
  59. Transformer Building
  60. Identifying weird signal transformer
  61. 100watt mono blocks
  62. Resistor combination calculator - RESCALC
  63. Aikido choice of valves (or tubes, if you will)
  64. Pin 9 on 6n6P, 6H30, etc
  65. Croft Super Micro meets Acoustat TNT200
  66. tube mic preamp kit??
  67. The SACD Meets Tubes
  68. Useful Abbreviations
  69. cap value for 6X4 rectifier?
  70. One B+ for the both driver and output tube if they are identical?
  71. Fisher 500B Schematic Question
  72. SE Output Transfromers Question
  73. Amplifier Project
  74. Grid Stopper for parallel sides of dual triode
  75. centre tap or floating heaters?
  76. Converting 6.3V to 6.3VCT Quick questions
  77. Russian Nuvistors...Anyone tried them?
  78. 一台300bc胆机,大家给点意见,谢谢
  79. Australian Amp Manufacturers
  80. Old radio quick question re PS
  81. Kt90 Pse
  82. Velleman K4040 is Always Blowing Output Tubes
  83. looking for transformer with the following specs?
  84. 5686 amplifier schematic
  85. Heaters for cathodes with a large swing
  86. 6DJ8 as phase splitter.
  87. New driver for SE 2A3
  88. I磛e made a Mu stage with 6888 and 6C45...
  89. Quick urgent Help plz !
  90. Cheap SET Kit for UK
  91. How can I change bias 6H30pi tube
  92. DHT heater voltage
  93. Ok SY...You Win
  94. Input level required- PP KT88
  95. SE 6C33C-B ; preview of a new Baby
  96. 2A3 grid DC voltage
  97. Dyna ST70 experience bypassing input tubes
  98. [Theory] Amplifier efficiency
  99. Pentode Cascode CCS
  100. Noval Relay
  101. Where to buy 6A5G ?
  102. AC or grounded DC for heater?
  103. EM84 based VUmeter "lines" don't go to zero
  104. 'scoping tube amps
  105. Preferred operating points of small signal triodes
  106. Is the Nuvistor Better Than The 12B4 For A Line Stage
  107. audio research schematics
  108. Looking to put the entire (last edition) RCA and Sylvania books online
  109. 5693 as a phono preamp?
  110. Audible Illusions Dual Mono Preamplifier
  111. should the filaments be already hot before the B+ is applied or
  112. One Electron vs. Transcendar
  113. &quot;Y&quot; caps? current bleed?
  114. I made a 200W tube amp!
  115. Power amp kit for a complete newbie
  116. Confused, datasheet of 417A/5842
  117. Audio Amp Project
  118. Tube tester settings?
  119. Neutrik XLR for Umbilical
  120. Primary Impedance
  121. Need help for HV section Design
  122. power amp kit recommendations
  123. 6N6P vs 5687
  124. Triode spice models for Circuit maker
  125. My ARC D70 get trouble
  126. when using PSUD2, do you...
  127. Depression... and a plea for help!!!
  128. Weston 981 Type 3 schematic and parts list needed
  129. 3W 6C33B-C SE OTL schematics ready
  130. Batory tubes, anyone familiar with these?
  131. Musical Pre-amp topology needed. Interstages please apply!
  132. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  133. PowerDrive Circuit for 805 (+ve grid bias)
  134. Alternate spice models
  135. Is this heater supply OK?
  136. Basic RC Value Question
  137. Hookup powersubwoofer to a tube receiver.
  138. Transformer question RE; connections on phono stage
  139. Rectifier Tubes Data - Quick Sheet
  140. Now This is A Tube Guitar Amp!!
  141. Which cabling to use?
  142. Need 396A/6N3P/2C51/407A spice model
  143. Antek Toroidal Power Transformers
  144. HT stands for???
  145. Is it possible to hook up 6c33 plate in parallel
  146. Help eliminating hum
  147. Tube LTP CCS?
  148. Trancsendar Transformers
  149. Hafler/Keroes 6L6 UL
  150. hum
  151. Leads for ISCO PS?
  152. Negative Feedback Bogen CHB100
  153. TubeCad's Hybrid amp question
  154. Cathode bias resistor value for 6SN7?
  155. El84 2-Channel Mono Blocks
  156. Tube Design Books
  157. Interesting Williamson article..
  158. Locating Preamp Output Transformers
  159. Plate characteristics
  160. How do you finance A Great DIY Audio Amp?
  161. 808 Se
  162. Parafeed doubt
  163. A little research: old tube amps from the past
  164. RCA Victor stereo cabinet amp-newb question
  165. Transformer temperature?
  166. switch in SPICE
  167. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  168. Tube testers which is the best?
  169. finished !!!
  170. Transformer Leg Connection Question
  171. simple ccs under 5-10mA ?
  172. Curcio Sarah Phono stage: opinions?
  173. suggest a KT88 SE to build
  174. Transformer potting material??
  175. Jan E Veiset Mini EL84 pp
  176. Some questions on non common things
  177. basic question on plate curves
  178. Euro barrier strip palace
  179. ARC D90 needs new electrolytics
  180. 5763 Triode Strapped
  181. Recommend me some transformers for a PP EL84
  182. grid LED bias?
  183. Help on tube socket
  184. Taking CFB to the extremes...?
  185. Output section impedance change query
  186. Tube Suggestions
  187. 82 Popped
  188. OPT Project for EL84 SE
  189. Interesting eBay "listing" for tube amp
  190. How to chose the right choke
  191. Eco warrior thinking of jumping ship !!!
  192. HELP! Cathode bypass caps keep going...
  193. Best Operating point for a 2A3?
  194. Need help with preamp
  195. Best place to buy valves and components?
  196. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  197. Circuit calculations
  198. Finally going to give my TVC/active preamp a real home...
  199. Suggestion on the input transformer for tube preamp
  200. sylvania & GE tubes
  201. SE Amplifier
  202. "fisss" on the 6C33C-pp
  203. Best price for tube output and power transformers ?
  204. What kind of output transformer?
  205. transformer
  206. 20W PP Choke PSU Question
  207. Regulated B+ supplies (using tubes)
  208. Confused by the numbers
  209. Feedback on Thorsten's legacy "universal dht" amp
  210. Are there techniques for triode-strapping on the fly?
  211. PROJECT begins: bass preamp
  212. The best bias point for KT88
  213. All tube CCS
  214. GU50 SE Amplifier class A , with 6SN7 Full construction details
  215. 50L6GT & 6L6GT sounds ??
  216. Especially for Tubelab: 845 amp 2.0
  217. Mini guitar amp from a Webcor tape amp, is it possible?
  218. Powerdrive
  219. Filament voltage and affect on Rp
  220. Tube pre-amplifier PSU
  221. Help with a cathode coupled pentode driver?
  222. Amp that has the biggest number of irons
  223. 12AX7A replacement
  224. Bogen CHB-10A Conversion, need help and advice
  225. Who said it was a good idea to try pentode!
  226. Input level
  227. 6V6GT
  228. 6AR6
  229. Any TCJ Push-Pull Calculator users?
  230. 211 Push pull operation points
  231. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  232. Bass guitar preamp
  233. 50W KT88 PP w/ NFB on Bonavolta
  234. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  235. BELL 3030 Amplifier
  236. Diy Paradise!
  237. Another PP 6B4G
  238. How to get a buffer with overdrive from a 12AX7 ?
  239. Pulsating Glow
  240. Question on using glow tubes (v-regs)
  241. Eliminating the OPT: impedance matching
  242. KT88 and push-pull ultra-linear
  243. Positronic Tubes
  244. Paint steel chassis with the "aluminum paint" used on wire fence?
  245. Best bias for 6cg7
  246. Coupling caps test bed
  247. 829B Based Amp
  248. slight hum still haunting me
  249. CCS bias question
  250. Can't get solder to stick

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