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  1. Pentode Cascode CCS
  2. Noval Relay
  3. Where to buy 6A5G ?
  4. AC or grounded DC for heater?
  5. EM84 based VUmeter "lines" don't go to zero
  6. 'scoping tube amps
  7. Preferred operating points of small signal triodes
  8. Is the Nuvistor Better Than The 12B4 For A Line Stage
  9. audio research schematics
  10. Looking to put the entire (last edition) RCA and Sylvania books online
  11. 5693 as a phono preamp?
  12. Audible Illusions Dual Mono Preamplifier
  13. should the filaments be already hot before the B+ is applied or
  14. One Electron vs. Transcendar
  15. "Y" caps? current bleed?
  16. I made a 200W tube amp!
  17. Power amp kit for a complete newbie
  18. Confused, datasheet of 417A/5842
  19. Audio Amp Project
  20. Tube tester settings?
  21. Neutrik XLR for Umbilical
  22. Primary Impedance
  23. Need help for HV section Design
  24. power amp kit recommendations
  25. 6N6P vs 5687
  26. Triode spice models for Circuit maker
  27. My ARC D70 get trouble
  28. when using PSUD2, do you...
  29. Depression... and a plea for help!!!
  30. Weston 981 Type 3 schematic and parts list needed
  31. 3W 6C33B-C SE OTL schematics ready
  32. Batory tubes, anyone familiar with these?
  33. Musical Pre-amp topology needed. Interstages please apply!
  34. Tube power Amp matching with SAE Mark M pre amp and AR18 speaker or MS 25i
  35. PowerDrive Circuit for 805 (+ve grid bias)
  36. Alternate spice models
  37. Is this heater supply OK?
  38. Basic RC Value Question
  39. Hookup powersubwoofer to a tube receiver.
  40. Transformer question RE; connections on phono stage
  41. Rectifier Tubes Data - Quick Sheet
  42. Now This is A Tube Guitar Amp!!
  43. Which cabling to use?
  44. Need 396A/6N3P/2C51/407A spice model
  45. Antek Toroidal Power Transformers
  46. HT stands for???
  47. Is it possible to hook up 6c33 plate in parallel
  48. Help eliminating hum
  49. Tube LTP CCS?
  50. Trancsendar Transformers
  51. Hafler/Keroes 6L6 UL
  52. hum
  53. Leads for ISCO PS?
  54. Negative Feedback Bogen CHB100
  55. TubeCad's Hybrid amp question
  56. Cathode bias resistor value for 6SN7?
  57. El84 2-Channel Mono Blocks
  58. Tube Design Books
  59. Interesting Williamson article..
  60. Locating Preamp Output Transformers
  61. Plate characteristics
  62. How do you finance A Great DIY Audio Amp?
  63. 808 Se
  64. Parafeed doubt
  65. A little research: old tube amps from the past
  66. RCA Victor stereo cabinet amp-newb question
  67. Transformer temperature?
  68. switch in SPICE
  69. Using a standard pentode-tetrode as output "space-charge tube" any ideas-experiences?
  70. Tube testers which is the best?
  71. finished !!!
  72. Transformer Leg Connection Question
  73. simple ccs under 5-10mA ?
  74. Curcio Sarah Phono stage: opinions?
  75. suggest a KT88 SE to build
  76. Transformer potting material??
  77. Jan E Veiset Mini EL84 pp
  78. Some questions on non common things
  79. basic question on plate curves
  80. Euro barrier strip palace
  81. ARC D90 needs new electrolytics
  82. 5763 Triode Strapped
  83. Recommend me some transformers for a PP EL84
  84. grid LED bias?
  85. Help on tube socket
  86. Taking CFB to the extremes...?
  87. Output section impedance change query
  88. Tube Suggestions
  89. 82 Popped
  90. OPT Project for EL84 SE
  91. Interesting eBay "listing" for tube amp
  92. How to chose the right choke
  93. Eco warrior thinking of jumping ship !!!
  94. HELP! Cathode bypass caps keep going...
  95. Best Operating point for a 2A3?
  96. Need help with preamp
  97. Best place to buy valves and components?
  98. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  99. Circuit calculations
  100. Finally going to give my TVC/active preamp a real home...
  101. Suggestion on the input transformer for tube preamp
  102. sylvania & GE tubes
  103. SE Amplifier
  104. "fisss" on the 6C33C-pp
  105. Best price for tube output and power transformers ?
  106. What kind of output transformer?
  107. transformer
  108. 20W PP Choke PSU Question
  109. Regulated B+ supplies (using tubes)
  110. Confused by the numbers
  111. Feedback on Thorsten's legacy "universal dht" amp
  112. Are there techniques for triode-strapping on the fly?
  113. PROJECT begins: bass preamp
  114. The best bias point for KT88
  115. All tube CCS
  116. GU50 SE Amplifier class A , with 6SN7 Full construction details
  117. 50L6GT & 6L6GT sounds ??
  118. Especially for Tubelab: 845 amp 2.0
  119. Mini guitar amp from a Webcor tape amp, is it possible?
  120. Powerdrive
  121. Filament voltage and affect on Rp
  122. Tube pre-amplifier PSU
  123. Help with a cathode coupled pentode driver?
  124. Amp that has the biggest number of irons
  125. 12AX7A replacement
  126. Bogen CHB-10A Conversion, need help and advice
  127. Who said it was a good idea to try pentode!
  128. Input level
  129. 6V6GT
  130. 6AR6
  131. Any TCJ Push-Pull Calculator users?
  132. 211 Push pull operation points
  133. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  134. Bass guitar preamp
  135. 50W KT88 PP w/ NFB on Bonavolta
  136. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  137. BELL 3030 Amplifier
  138. Diy Paradise!
  139. Another PP 6B4G
  140. How to get a buffer with overdrive from a 12AX7 ?
  141. Pulsating Glow
  142. Question on using glow tubes (v-regs)
  143. Eliminating the OPT: impedance matching
  144. KT88 and push-pull ultra-linear
  145. Positronic Tubes
  146. Paint steel chassis with the "aluminum paint" used on wire fence?
  147. Best bias for 6cg7
  148. Coupling caps test bed
  149. 829B Based Amp
  150. slight hum still haunting me
  151. CCS bias question
  152. Can't get solder to stick
  153. EL84 amp plus subwoofers? STUPID? OR NOT?
  154. Johan Potgieter
  155. parallel sections
  156. PL504/EL84 SE vs parafeed
  157. [help] Look for McIntosh MI-200 Circuit diagram
  158. My experience: the cheap punch set VS Greenlee punch
  159. 6V6GT SE schematic -need!!!
  160. What's the deal with Broskie's iPod buddy?
  161. a quiz about AC power
  162. Beard P100 Amplifier
  163. Quick identification question
  164. 6V6 guitar amp design attempt
  165. Some more RIAA questions
  166. what to do?
  167. A suspect EL34
  168. Best way of reducing heater voltage?
  169. Musical Instrument tube amp part suppliers
  170. tubelab
  171. My first power amp
  172. El34 SE pentode
  173. All Electron Tubes Manufacturers
  174. Mu stage driver
  175. two questions on Parafeed amplifier
  176. 6AU5GT
  177. Connection advice
  178. 'Tube'-ing a reel-to-reel player.
  179. EL34 make up by PCB
  180. wanted RIAA schematic
  181. What is the best software to create tube schematic
  182. Soft clipping acceptable?
  183. help for this amp
  184. Pentode PP amp for comments, please
  185. 966A rectifier
  186. 938 power triode
  187. PL36 PP Amplifier 22W Full construction details
  188. Quick question about the output of my amp
  189. Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
  190. An "All American" tube Project
  191. Aikido and output transformer
  192. Why are Hammond SE OPTs dissed? Heavier than the competition...
  193. Driver stage headroom
  194. Help me before I deal hot electric death to myself (PS question)
  195. AVO CT-160
  196. Two cathode resistor bypass questions
  197. Home-Made Tube Guitar Heads
  198. What do you guys think?
  199. Antique Sound Lab Aq1003
  200. Audiomaster integrated (Valve) amp
  201. PP Amp using 811A
  202. Replacing ECC83 in Leak Stereo50 with ECC808
  203. 6N30/6H30 Datasheet
  204. Equivalents to 6888
  205. Input voltage
  206. Converting from integrated to pure amp
  207. Final schematic, I think?
  208. Toroidal core saturation
  209. Mystery SE OPT
  210. Is this a Spud Amp ?
  211. input cap V rating
  212. 6922 Heater - BIAS
  213. JJ 2A3-40 Watt?
  214. 12AU7 testing result: Are these tubes still good?
  215. "OTK" stamp on russian devices
  216. Where did nj7p.org go ?
  217. New to forum! Or: A few newbie questions
  218. Powersuply Le Bong?
  219. Fixed Bias: the ups and downs
  220. Bias Adjustment Question
  221. Multiple secondaries hook-up!!!
  222. Plate voltage related to sound?
  223. Array speakers & OTL
  224. First Post - Hum on 5687 Pre-amp
  225. DC powered amps
  226. Evaluating Unknown Power Transformers
  227. 0v grid bias with UL connection?
  228. LV Filament supply quandry
  229. which tube using NonDirect heat with best-class sound ?
  230. Surround Decoder - Subtract amplifier
  231. New To Forum - First Post
  232. Try to understand
  233. tube site
  234. OTL with 6S19P?
  235. What should B+ on 300B push-pull be?
  236. Regulated PSU with EL84
  237. How do I design minimum current for 35W PP AMP
  238. Buying bits'n'bobs...
  239. Can't make this address work.....
  240. schematics for 6C33 single ended OTL?
  241. Guitar amp input tube paralleled
  242. valve preamp
  243. trio W-38 problems
  244. Cheap Russian 2.2uF 400V PIO Capacitor
  245. Otl Se
  246. My 2A3 is being left behind
  247. SE for Bass?
  248. Wal-Mart power supplies
  249. Nice deal!
  250. Look for high-voltage regulator projects

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