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  1. Preferred operating points of small signal triodes
  2. Is the Nuvistor Better Than The 12B4 For A Line Stage
  3. audio research schematics
  4. Looking to put the entire (last edition) RCA and Sylvania books online
  5. 5693 as a phono preamp?
  6. Audible Illusions Dual Mono Preamplifier
  7. should the filaments be already hot before the B+ is applied or
  8. One Electron vs. Transcendar
  9. "Y" caps? current bleed?
  10. I made a 200W tube amp!
  11. Power amp kit for a complete newbie
  12. Confused, datasheet of 417A/5842
  13. Audio Amp Project
  14. Tube tester settings?
  15. Neutrik XLR for Umbilical
  16. Primary Impedance
  17. Need help for HV section Design
  18. power amp kit recommendations
  19. 6N6P vs 5687
  20. Triode spice models for Circuit maker
  21. My ARC D70 get trouble
  22. when using PSUD2, do you...
  23. Depression... and a plea for help!!!
  24. Weston 981 Type 3 schematic and parts list needed
  25. 3W 6C33B-C SE OTL schematics ready
  26. Batory tubes, anyone familiar with these?
  27. Musical Pre-amp topology needed. Interstages please apply!
  28. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  29. PowerDrive Circuit for 805 (+ve grid bias)
  30. Alternate spice models
  31. Is this heater supply OK?
  32. Basic RC Value Question
  33. Hookup powersubwoofer to a tube receiver.
  34. Transformer question RE; connections on phono stage
  35. Rectifier Tubes Data - Quick Sheet
  36. Now This is A Tube Guitar Amp!!
  37. Which cabling to use?
  38. Need 396A/6N3P/2C51/407A spice model
  39. Antek Toroidal Power Transformers
  40. HT stands for???
  41. Is it possible to hook up 6c33 plate in parallel
  42. Help eliminating hum
  43. Tube LTP CCS?
  44. Trancsendar Transformers
  45. Hafler/Keroes 6L6 UL
  46. hum
  47. Leads for ISCO PS?
  48. Negative Feedback Bogen CHB100
  49. TubeCad's Hybrid amp question
  50. Cathode bias resistor value for 6SN7?
  51. El84 2-Channel Mono Blocks
  52. Tube Design Books
  53. Interesting Williamson article..
  54. Locating Preamp Output Transformers
  55. Plate characteristics
  56. How do you finance A Great DIY Audio Amp?
  57. 808 Se
  58. Parafeed doubt
  59. A little research: old tube amps from the past
  60. RCA Victor stereo cabinet amp-newb question
  61. Transformer temperature?
  62. switch in SPICE
  63. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  64. Tube testers which is the best?
  65. finished !!!
  66. Transformer Leg Connection Question
  67. simple ccs under 5-10mA ?
  68. Curcio Sarah Phono stage: opinions?
  69. suggest a KT88 SE to build
  70. Transformer potting material??
  71. Jan E Veiset Mini EL84 pp
  72. Some questions on non common things
  73. basic question on plate curves
  74. Euro barrier strip palace
  75. ARC D90 needs new electrolytics
  76. 5763 Triode Strapped
  77. Recommend me some transformers for a PP EL84
  78. grid LED bias?
  79. Help on tube socket
  80. Taking CFB to the extremes...?
  81. Output section impedance change query
  82. Tube Suggestions
  83. 82 Popped
  84. OPT Project for EL84 SE
  85. Interesting eBay "listing" for tube amp
  86. How to chose the right choke
  87. Eco warrior thinking of jumping ship !!!
  88. HELP! Cathode bypass caps keep going...
  89. Best Operating point for a 2A3?
  90. Need help with preamp
  91. Best place to buy valves and components?
  92. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  93. Circuit calculations
  94. Finally going to give my TVC/active preamp a real home...
  95. Suggestion on the input transformer for tube preamp
  96. sylvania & GE tubes
  97. SE Amplifier
  98. "fisss" on the 6C33C-pp
  99. Best price for tube output and power transformers ?
  100. What kind of output transformer?
  101. transformer
  102. 20W PP Choke PSU Question
  103. Regulated B+ supplies (using tubes)
  104. Confused by the numbers
  105. Feedback on Thorsten's legacy "universal dht" amp
  106. Are there techniques for triode-strapping on the fly?
  107. PROJECT begins: bass preamp
  108. The best bias point for KT88
  109. All tube CCS
  110. GU50 SE Amplifier class A , with 6SN7 Full construction details
  111. 50L6GT & 6L6GT sounds ??
  112. Especially for Tubelab: 845 amp 2.0
  113. Mini guitar amp from a Webcor tape amp, is it possible?
  114. Powerdrive
  115. Filament voltage and affect on Rp
  116. Tube pre-amplifier PSU
  117. Help with a cathode coupled pentode driver?
  118. Amp that has the biggest number of irons
  119. 12AX7A replacement
  120. Bogen CHB-10A Conversion, need help and advice
  121. Who said it was a good idea to try pentode!
  122. Input level
  123. 6V6GT
  124. 6AR6
  125. Any TCJ Push-Pull Calculator users?
  126. 211 Push pull operation points
  127. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  128. Bass guitar preamp
  129. 50W KT88 PP w/ NFB on Bonavolta
  130. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  131. BELL 3030 Amplifier
  132. Diy Paradise!
  133. Another PP 6B4G
  134. How to get a buffer with overdrive from a 12AX7 ?
  135. Pulsating Glow
  136. Question on using glow tubes (v-regs)
  137. Eliminating the OPT: impedance matching
  138. KT88 and push-pull ultra-linear
  139. Positronic Tubes
  140. Paint steel chassis with the "aluminum paint" used on wire fence?
  141. Best bias for 6cg7
  142. Coupling caps test bed
  143. 829B Based Amp
  144. slight hum still haunting me
  145. CCS bias question
  146. Can't get solder to stick
  147. EL84 amp plus subwoofers? STUPID? OR NOT?
  148. Johan Potgieter
  149. parallel sections
  150. PL504/EL84 SE vs parafeed
  151. [help] Look for McIntosh MI-200 Circuit diagram
  152. My experience: the cheap punch set VS Greenlee punch
  153. 6V6GT SE schematic -need!!!
  154. What's the deal with Broskie's iPod buddy?
  155. a quiz about AC power
  156. Beard P100 Amplifier
  157. Quick identification question
  158. 6V6 guitar amp design attempt
  159. Some more RIAA questions
  160. what to do?
  161. A suspect EL34
  162. Best way of reducing heater voltage?
  163. Musical Instrument tube amp part suppliers
  164. tubelab
  165. My first power amp
  166. El34 SE pentode
  167. All Electron Tubes Manufacturers
  168. Mu stage driver
  169. two questions on Parafeed amplifier
  170. 6AU5GT
  171. Connection advice
  172. 'Tube'-ing a reel-to-reel player.
  173. EL34 make up by PCB
  174. wanted RIAA schematic
  175. What is the best software to create tube schematic
  176. Soft clipping acceptable?
  177. help for this amp
  178. Pentode PP amp for comments, please
  179. 966A rectifier
  180. 938 power triode
  181. PL36 PP Amplifier 22W Full construction details
  182. Quick question about the output of my amp
  183. Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
  184. An "All American" tube Project
  185. Aikido and output transformer
  186. Why are Hammond SE OPTs dissed? Heavier than the competition...
  187. Driver stage headroom
  188. Help me before I deal hot electric death to myself (PS question)
  189. AVO CT-160
  190. Two cathode resistor bypass questions
  191. Home-Made Tube Guitar Heads
  192. What do you guys think?
  193. Antique Sound Lab Aq1003
  194. Audiomaster integrated (Valve) amp
  195. PP Amp using 811A
  196. Replacing ECC83 in Leak Stereo50 with ECC808
  197. 6N30/6H30 Datasheet
  198. Equivalents to 6888
  199. Input voltage
  200. Converting from integrated to pure amp
  201. Final schematic, I think?
  202. Toroidal core saturation
  203. Mystery SE OPT
  204. Is this a Spud Amp ?
  205. input cap V rating
  206. 6922 Heater - BIAS
  207. JJ 2A3-40 Watt?
  208. 12AU7 testing result: Are these tubes still good?
  209. "OTK" stamp on russian devices
  210. Where did nj7p.org go ?
  211. New to forum! Or: A few newbie questions
  212. Powersuply Le Bong?
  213. Fixed Bias: the ups and downs
  214. Bias Adjustment Question
  215. Multiple secondaries hook-up!!!
  216. Plate voltage related to sound?
  217. Array speakers & OTL
  218. First Post - Hum on 5687 Pre-amp
  219. DC powered amps
  220. Evaluating Unknown Power Transformers
  221. 0v grid bias with UL connection?
  222. LV Filament supply quandry
  223. which tube using NonDirect heat with best-class sound ?
  224. Surround Decoder - Subtract amplifier
  225. New To Forum - First Post
  226. Try to understand
  227. tube site
  228. OTL with 6S19P?
  229. What should B+ on 300B push-pull be?
  230. Regulated PSU with EL84
  231. How do I design minimum current for 35W PP AMP
  232. Buying bits'n'bobs...
  233. Can't make this address work.....
  234. schematics for 6C33 single ended OTL?
  235. Guitar amp input tube paralleled
  236. valve preamp
  237. trio W-38 problems
  238. Cheap Russian 2.2uF 400V PIO Capacitor
  239. Otl Se
  240. My 2A3 is being left behind
  241. SE for Bass?
  242. Wal-Mart power supplies
  243. Nice deal!
  244. Look for high-voltage regulator projects
  245. Typical plate Voltage for el34
  246. Arc Sp8
  247. New Phono amp - developing stage
  248. fender princeton 5D2.. DONE!
  249. CCS Bang for the buck output or driver?
  250. pentode driver sanity check - before i build

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