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  1. Capacitors and tubes for AA5?
  2. Dynaco PAS Rebuild
  3. Audio Research SP9 Circuit Diagram HELP!
  4. ARC reference II schematic
  5. 71a Line Stage and Miller Capacitance
  6. Low plate voltage pentode (<40v) for diff pair?
  7. loadlines for newbie.
  8. Measuring approx RMS power O/P
  9. Hybrid Aikido-ish gain stage
  10. Loftin-White coupling Questions
  11. 807 screen regulation
  12. What kills an opt tranny?
  13. EAR529 schematic diagram
  14. World Designs KEL84 Valve Amplifier
  15. what 300B design would you recommend but...
  16. Replacement conductance meter for Hickok 533A
  17. My RIAA Phono Stage Project
  18. A2 Questions
  19. World Audio Design
  20. Seek for your comments/advice to newbie on Tube world
  21. CCSed LTP validity?
  22. Suitability of transmitter tubes for musical amplifiers
  23. Anyone using an 813 in pentode?
  24. Electrolytic in the feedback loop
  25. El34 PP Vs. El34 PSE
  26. RIAA Phono Amp Design
  27. Matching resistors to 1% or Better
  28. Wirewound cathode resistor
  29. Tube Hybrid Amp.
  30. Nasty ground loop
  31. ECC88 Class B
  32. Cree diodes
  33. Old Tube Amp Servicer In Nj???
  34. Vg-k max
  35. Anyone used PT15 / VT104 ?
  36. rebuild a Musical Fidelity X-10D ??
  37. Transformer Building
  38. Identifying weird signal transformer
  39. 100watt mono blocks
  40. Resistor combination calculator - RESCALC
  41. Aikido choice of valves (or tubes, if you will)
  42. Pin 9 on 6n6P, 6H30, etc
  43. Croft Super Micro meets Acoustat TNT200
  44. tube mic preamp kit??
  45. The SACD Meets Tubes
  46. Useful Abbreviations
  47. cap value for 6X4 rectifier?
  48. One B+ for the both driver and output tube if they are identical?
  49. Fisher 500B Schematic Question
  50. SE Output Transfromers Question
  51. Amplifier Project
  52. Grid Stopper for parallel sides of dual triode
  53. centre tap or floating heaters?
  54. Converting 6.3V to 6.3VCT Quick questions
  55. Russian Nuvistors...Anyone tried them?
  56. 一台300bc胆机,大家给点意见,谢谢
  57. Australian Amp Manufacturers
  58. Old radio quick question re PS
  59. Kt90 Pse
  60. Velleman K4040 is Always Blowing Output Tubes
  61. looking for transformer with the following specs?
  62. 5686 amplifier schematic
  63. Heaters for cathodes with a large swing
  64. 6DJ8 as phase splitter.
  65. New driver for SE 2A3
  66. I磛e made a Mu stage with 6888 and 6C45...
  67. Quick urgent Help plz !
  68. Cheap SET Kit for UK
  69. How can I change bias 6H30pi tube
  70. DHT heater voltage
  71. Ok SY...You Win
  72. Input level required- PP KT88
  73. SE 6C33C-B ; preview of a new Baby
  74. 2A3 grid DC voltage
  75. Dyna ST70 experience bypassing input tubes
  76. [Theory] Amplifier efficiency
  77. Pentode Cascode CCS
  78. Noval Relay
  79. Where to buy 6A5G ?
  80. AC or grounded DC for heater?
  81. EM84 based VUmeter "lines" don't go to zero
  82. 'scoping tube amps
  83. Preferred operating points of small signal triodes
  84. Is the Nuvistor Better Than The 12B4 For A Line Stage
  85. audio research schematics
  86. Looking to put the entire (last edition) RCA and Sylvania books online
  87. 5693 as a phono preamp?
  88. Audible Illusions Dual Mono Preamplifier
  89. should the filaments be already hot before the B+ is applied or
  90. One Electron vs. Transcendar
  91. &quot;Y&quot; caps? current bleed?
  92. I made a 200W tube amp!
  93. Power amp kit for a complete newbie
  94. Confused, datasheet of 417A/5842
  95. Audio Amp Project
  96. Tube tester settings?
  97. Neutrik XLR for Umbilical
  98. Primary Impedance
  99. Need help for HV section Design
  100. power amp kit recommendations
  101. 6N6P vs 5687
  102. Triode spice models for Circuit maker
  103. My ARC D70 get trouble
  104. when using PSUD2, do you...
  105. Depression... and a plea for help!!!
  106. Weston 981 Type 3 schematic and parts list needed
  107. 3W 6C33B-C SE OTL schematics ready
  108. Batory tubes, anyone familiar with these?
  109. Musical Pre-amp topology needed. Interstages please apply!
  110. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  111. PowerDrive Circuit for 805 (+ve grid bias)
  112. Alternate spice models
  113. Is this heater supply OK?
  114. Basic RC Value Question
  115. Hookup powersubwoofer to a tube receiver.
  116. Transformer question RE; connections on phono stage
  117. Rectifier Tubes Data - Quick Sheet
  118. Now This is A Tube Guitar Amp!!
  119. Which cabling to use?
  120. Need 396A/6N3P/2C51/407A spice model
  121. Antek Toroidal Power Transformers
  122. HT stands for???
  123. Is it possible to hook up 6c33 plate in parallel
  124. Help eliminating hum
  125. Tube LTP CCS?
  126. Trancsendar Transformers
  127. Hafler/Keroes 6L6 UL
  128. hum
  129. Leads for ISCO PS?
  130. Negative Feedback Bogen CHB100
  131. TubeCad's Hybrid amp question
  132. Cathode bias resistor value for 6SN7?
  133. El84 2-Channel Mono Blocks
  134. Tube Design Books
  135. Interesting Williamson article..
  136. Locating Preamp Output Transformers
  137. Plate characteristics
  138. How do you finance A Great DIY Audio Amp?
  139. 808 Se
  140. Parafeed doubt
  141. A little research: old tube amps from the past
  142. RCA Victor stereo cabinet amp-newb question
  143. Transformer temperature?
  144. switch in SPICE
  145. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  146. Tube testers which is the best?
  147. finished !!!
  148. Transformer Leg Connection Question
  149. simple ccs under 5-10mA ?
  150. Curcio Sarah Phono stage: opinions?
  151. suggest a KT88 SE to build
  152. Transformer potting material??
  153. Jan E Veiset Mini EL84 pp
  154. Some questions on non common things
  155. basic question on plate curves
  156. Euro barrier strip palace
  157. ARC D90 needs new electrolytics
  158. 5763 Triode Strapped
  159. Recommend me some transformers for a PP EL84
  160. grid LED bias?
  161. Help on tube socket
  162. Taking CFB to the extremes...?
  163. Output section impedance change query
  164. Tube Suggestions
  165. 82 Popped
  166. OPT Project for EL84 SE
  167. Interesting eBay "listing" for tube amp
  168. How to chose the right choke
  169. Eco warrior thinking of jumping ship !!!
  170. HELP! Cathode bypass caps keep going...
  171. Best Operating point for a 2A3?
  172. Need help with preamp
  173. Best place to buy valves and components?
  174. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  175. Circuit calculations
  176. Finally going to give my TVC/active preamp a real home...
  177. Suggestion on the input transformer for tube preamp
  178. sylvania & GE tubes
  179. SE Amplifier
  180. "fisss" on the 6C33C-pp
  181. Best price for tube output and power transformers ?
  182. What kind of output transformer?
  183. transformer
  184. 20W PP Choke PSU Question
  185. Regulated B+ supplies (using tubes)
  186. Confused by the numbers
  187. Feedback on Thorsten's legacy "universal dht" amp
  188. Are there techniques for triode-strapping on the fly?
  189. PROJECT begins: bass preamp
  190. The best bias point for KT88
  191. All tube CCS
  192. GU50 SE Amplifier class A , with 6SN7 Full construction details
  193. 50L6GT & 6L6GT sounds ??
  194. Especially for Tubelab: 845 amp 2.0
  195. Mini guitar amp from a Webcor tape amp, is it possible?
  196. Powerdrive
  197. Filament voltage and affect on Rp
  198. Tube pre-amplifier PSU
  199. Help with a cathode coupled pentode driver?
  200. Amp that has the biggest number of irons
  201. 12AX7A replacement
  202. Bogen CHB-10A Conversion, need help and advice
  203. Who said it was a good idea to try pentode!
  204. Input level
  205. 6V6GT
  206. 6AR6
  207. Any TCJ Push-Pull Calculator users?
  208. 211 Push pull operation points
  209. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  210. Bass guitar preamp
  211. 50W KT88 PP w/ NFB on Bonavolta
  212. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  213. BELL 3030 Amplifier
  214. Diy Paradise!
  215. Another PP 6B4G
  216. How to get a buffer with overdrive from a 12AX7 ?
  217. Pulsating Glow
  218. Question on using glow tubes (v-regs)
  219. Eliminating the OPT: impedance matching
  220. KT88 and push-pull ultra-linear
  221. Positronic Tubes
  222. Paint steel chassis with the "aluminum paint" used on wire fence?
  223. Best bias for 6cg7
  224. Coupling caps test bed
  225. 829B Based Amp
  226. slight hum still haunting me
  227. CCS bias question
  228. Can't get solder to stick
  229. EL84 amp plus subwoofers? STUPID? OR NOT?
  230. Johan Potgieter
  231. parallel sections
  232. PL504/EL84 SE vs parafeed
  233. [help] Look for McIntosh MI-200 Circuit diagram
  234. My experience: the cheap punch set VS Greenlee punch
  235. 6V6GT SE schematic -need!!!
  236. What's the deal with Broskie's iPod buddy?
  237. a quiz about AC power
  238. Beard P100 Amplifier
  239. Quick identification question
  240. 6V6 guitar amp design attempt
  241. Some more RIAA questions
  242. what to do?
  243. A suspect EL34
  244. Best way of reducing heater voltage?
  245. Musical Instrument tube amp part suppliers
  246. tubelab
  247. My first power amp
  248. El34 SE pentode
  249. All Electron Tubes Manufacturers
  250. Mu stage driver

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