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  1. Tubes and RoHS compliance?
  2. What do you think about this tube preamp?
  3. What's Ra?
  4. Screen grid resistors
  5. Miller compensation - pros/cons?
  6. G. Kaufman's 6GV8/ECL85 regulated psu
  7. 6CA4/EZ81 heater bias
  8. First stab with PSD for 6CK4 amp-what have I got here?
  9. 81 Rectifier
  10. using 40 VDC supply?
  11. Choke current
  12. Why two diodes per branch on a full wave rectifier?
  13. Alps attenuators
  14. Seeking quality PP pre/mono power project (long)
  15. Transformer location
  16. proper choke placement
  17. 6HE5 as output pentode?
  18. A possible good source for steel chassis
  19. Update on DIY 7591 PP bias cap issue!
  20. 832, can you go SE with these?
  21. PX25 SE without NFB
  22. Change my 8417's Quicksilvers to this?
  23. SE EL84 circuit for bi-amp setup?
  24. CLCLC PSU for 6P14P-EV PP
  25. Shielding a Power Tranny
  26. Unison Research Schema Needed
  27. My 2A3 schematic, comments please.
  28. What happend to the PHOTO GALLERY ?
  29. Valve pre-amp maintenance and purchase
  30. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  31. TPAD Devices Kit
  32. Need Help. Anyone with Philips AG 9016??
  33. Question about input sensitivity?
  34. Any help on sth probably simple?
  35. few questions about my amp, pls come in
  36. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  37. Need regulated solid state PSU
  38. EC31 - Any Datasheet...?
  39. comments on www.shinrock.com???
  40. need schematic reading help
  41. Sound from dummy load?
  42. Loftin-White
  43. RCA 151 'scope
  44. Coupling cap. values???
  45. stepped attenuator
  46. Ideas for input/driver stage of 300B amp
  47. Schematics for Bogen MXM-A Mixer?
  48. yet another which cap is best for the money question
  49. Lowering the value of the lead resistor
  50. power supply recommendation for EL84 amp
  51. Can ECC40 be used in a phono stage?
  52. Better current source than LM317 on a 12B4 line amp
  53. Bias and max current for my 7591 AB amp...
  54. Making sense of the Aikido calculations?
  55. Computer Grade Capacitors
  56. Pls recommend a power amp to build?
  57. Advice about this 45 amp
  58. Any definitive infor on R-C parafeed out there?
  59. 6AS7 as rectifier tube?
  60. Pre Amps
  61. 12 volt preamp
  62. JE LAB's 2001 2A3 & Preamp???
  63. 12AX7WA
  64. found DIY amp - now what?
  65. Magic Eye spectrum analyzer
  66. Tube Companies
  67. B+ from GZ34 Heater CT ?
  68. Unknown mA on Gardners mains transformer
  69. PSU Question
  70. how to mount rca jacks and volume control in wood enclosure?
  71. Giaime's last nightmare - aka RIAA faceoff
  72. 5687 dc 5687 tube amp need help
  73. Input cap needed
  74. 6BQ5\EL84 line amp
  75. Capacitor Values Why so high? & What can I do?
  76. Bias pot question
  77. What I have: 4 Tubes. What I need...
  78. let me fix this bias
  79. A small no-fuss pentode/pentode SE amp
  80. Bleeder Resistor Placement
  81. Modifying Heathkit AA 151
  82. Interstage transformer for PI.
  83. mono center channel out to stereo
  84. Audio Research REF 2 MkII
  85. 717a plate volts
  86. valve preamp criticisms?
  87. LOT of tubes. what can I do?
  88. substitution for 7355
  89. KT88 heaters
  90. Software for drawing tube schematics?
  91. New books posted
  92. Compound bias
  93. Tube Oscillation or Microphonic Question
  94. WTB:OT for el 34 35 watt tube amplifier
  95. Questions on 6H30 simple PF?
  96. "Super Davohm" 1w .1% wirewound
  97. Heathkit AA-100
  98. 6159 for SE Power amp
  99. Do SMPS have a home at high end audio?
  100. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  101. cathode capacitance on anode follower
  102. looking for a building shematic for ECLL800
  103. Iron learning.
  104. Tube Amp - Crackling Sound on Left Channel
  105. Pspice preamp simulation
  106. Supply voltage for 12v6 12B4 heaters
  107. New project and my first circuit...
  108. Choke coupled phase invertor
  109. long cable line drive
  110. What To Do?
  111. Simple Method To Measure Source Resistance?
  112. is this true????
  113. query on the PSU of a preamp
  114. Meshplate Help needed
  115. 6072 tube preamplifier.
  116. hybrid rectifiers and PIV rating
  117. transformerless amp help plz ...
  118. Help me build a tube MIC preamp plz
  119. chinese 845 amp blowing fuses
  120. Question about PIV rating of diodes...
  121. Triode strapped heptode?
  122. The Fisher 500C/800C Challenge (long..dialup warning)
  123. 5 wire output transformer
  124. Orcad & tube library
  125. Wall Wart Tube Power
  126. How can I lower B+ of power supply?
  127. How do you put a CCS under a diff. pair of DHTs???
  128. Just need to make sure.
  129. restoring a marantz 7c
  130. What is Simplest and Best 6L6 PP circuit? (PK)
  131. Good DIY Transformer Article (in Thai)
  132. Tube Swapping Question
  133. Toroid choke question
  134. Pentode CCS for parafeed SEP??
  135. subminiature tube suggestion
  136. MQ431 or Triode's DynaClone
  137. Conrad Johnson MV 45 schematic help
  138. signal wiring
  139. NEW B Need Help on Output Tx Problem
  140. center tap of heater winding
  141. Dynaco Mk IV question
  142. Does this tube amp has enough cap
  143. Acrosound TO-330 output transformers
  144. PP transformer for SE use
  145. Holiday Time!
  146. another beginers first amp thread!
  147. Western Electric 374A
  148. Musen to Jikken 03/1997
  149. Please help me make a schematic
  150. Tips for Hakko 936-12
  151. AC or DC for 300b Heaters
  152. Two irons for PSU
  153. Which DHT for Line stage?
  154. Pye Mozart 10 amplifier
  155. I need a simple schematic with 6J1P tubes
  156. First tube project. Need advice.
  157. Sound Valves M-40 assistance
  158. Has anyone been keeping up on the 'New Sensor' Controversy?
  159. quad esl output transformer.
  160. penta labs?
  161. transformer links
  162. EL84 auto split
  163. TOPWARD MODEL 605 operation manual & Schematic
  164. PREdator, Diff/CF linestage.
  165. Triode Electronics ??
  166. Full Bridge Amp?
  167. Tube literature on pentodes + transformers
  168. so, who made General Motor's "AUTRONIC EYE" tubes?
  169. 6DJ8 Linestage
  170. Annyone seen this problem?
  171. psu to heater on 4 el34 tubes???
  172. 6C33C-B, Reliability--A theory........
  173. Sun Audio preamps
  174. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  175. Carver Phono
  176. Help With 3 Channel Magnavox
  177. simulation software
  178. trickle charge psu?
  179. tube filter
  180. Holiday S-5 K-12G
  181. Couple of (newbie) tube questions...
  182. valve buffer gainclone
  183. Series wiring for heaters
  184. DIY tube cd player ?
  185. Tubes in mp3 players?
  186. Output Impedance?
  187. Hum Pot Question
  188. Which 6AQ5
  189. White flakes in rectifier tube??
  190. Bogen V20 PA Amp Schematic or ?
  191. 12a?7 in Eico HF-12
  192. Home Made Tubes?? has anyone made one, is it possible??
  193. replace 6N1P with 7308
  194. Plate choke on a line stage?
  195. Looking for datasheet
  196. 811A SET Monoblock physical layout suggestions
  197. Automated bias
  198. OTL or parafeed?
  199. Reversing mains toroids for HT
  200. 5881/6L6WGC and 12AT7WA replacement
  201. Direction for Mounting Transformers
  202. Ecf80
  203. feedback phasing
  204. Cryotubes? Cryogenically Frozen valves
  205. European Triode Festival 2005
  206. PSU capacitors
  207. Question on shared rectifier / signal tube filament windings
  208. Heathkit rebuild or...?
  209. Fisher 500B OPT/Feedback Questions
  210. Transformer selection question
  211. Grounded Grid Help
  212. EF86 penthode
  213. Any audio use for ER21A?
  214. Upgrading a sonic frontiers SFS-80
  215. Hum problem
  216. low frequency oscillation in 12B4 linestage
  217. Balanced volume control question
  218. Need Help for Power Supply for gg Preamp
  219. OTL 6c33c Ciufolli v8.2 low voltage rails
  220. Any way to extend OPT low-frequency response?
  221. RCA Phono Stage Redux
  222. About tube codes
  223. More Joules? Tube or Solid State PSU?
  224. EL34 schematic confusion
  225. 2-stage DHT: high-mu vs. interstage stepup
  226. Understanding this power supply
  227. 6V6G recommended schematic
  228. parallel CRC Filtering for B+
  229. 6v6. 6lg Gain Max Voltage
  230. More buffer questions
  231. Benchtop PS
  232. Chassis labels
  233. LM317 Regulator Problem
  234. Can I afford my SE amp ??
  235. 12B4 versus 6S4 for linestage
  236. Function Generator Probe?
  237. Otl Set?
  238. Tektronix TDS2000 series is a noisy scope
  239. vanderveen's 30W PP amp..
  240. Roberts/Akai M series amp problems
  241. What speaker to use with my tube clone
  242. What’s the best tube amplifier you can build?
  243. Cathode Follower Buffer Input Impedance
  244. EL84 as Preamp and as Crossover
  245. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  246. EL 84 Single Ended Integrated
  247. "2 Stage" PP 7591 Amp
  248. Jolida 1301a with Mission M71 speakers?
  249. EL34 SE in 430V?
  250. EL 84 PPP/PP Class A Triode schematic

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