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  1. Cheap el84 se
  2. Bridge rectifier with capacitors???
  3. 4 volt (dc?) heater from 6.3v
  4. Does anyone recognise this valve amp
  5. Which 6SN7 preamp should I build?
  6. Help on upgrading my Tube Preamp
  7. looking for a non-copyrighted preamp schematic
  8. Problems with cathodyne
  9. more gain needed -> how?
  10. OT: Tribute to Kondo-San
  11. PCL82 SE Tube Amplifier Kit
  12. Rectifier voltage difference, Why?
  13. partial feedback stuff
  14. replace 5y3
  15. Sparking Tubes!
  16. Transformer End Bells
  17. DHT Ultrapath Linestage schematic help
  18. Who manufactured are these EL34's?
  19. Tubes and RoHS compliance?
  20. What do you think about this tube preamp?
  21. What's Ra?
  22. Screen grid resistors
  23. Miller compensation - pros/cons?
  24. G. Kaufman's 6GV8/ECL85 regulated psu
  25. 6CA4/EZ81 heater bias
  26. First stab with PSD for 6CK4 amp-what have I got here?
  27. 81 Rectifier
  28. using 40 VDC supply?
  29. Choke current
  30. Why two diodes per branch on a full wave rectifier?
  31. Alps attenuators
  32. Seeking quality PP pre/mono power project (long)
  33. Transformer location
  34. proper choke placement
  35. 6HE5 as output pentode?
  36. A possible good source for steel chassis
  37. Update on DIY 7591 PP bias cap issue!
  38. 832, can you go SE with these?
  39. PX25 SE without NFB
  40. Change my 8417's Quicksilvers to this?
  41. SE EL84 circuit for bi-amp setup?
  42. CLCLC PSU for 6P14P-EV PP
  43. Shielding a Power Tranny
  44. Unison Research Schema Needed
  45. My 2A3 schematic, comments please.
  46. What happend to the PHOTO GALLERY ?
  47. Valve pre-amp maintenance and purchase
  48. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  49. TPAD Devices Kit
  50. Need Help. Anyone with Philips AG 9016??
  51. Question about input sensitivity?
  52. Any help on sth probably simple?
  53. few questions about my amp, pls come in
  54. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  55. Need regulated solid state PSU
  56. EC31 - Any Datasheet...?
  57. comments on www.shinrock.com???
  58. need schematic reading help
  59. Sound from dummy load?
  60. Loftin-White
  61. RCA 151 'scope
  62. Coupling cap. values???
  63. stepped attenuator
  64. Ideas for input/driver stage of 300B amp
  65. Schematics for Bogen MXM-A Mixer?
  66. yet another which cap is best for the money question
  67. Lowering the value of the lead resistor
  68. power supply recommendation for EL84 amp
  69. Can ECC40 be used in a phono stage?
  70. Better current source than LM317 on a 12B4 line amp
  71. Bias and max current for my 7591 AB amp...
  72. Making sense of the Aikido calculations?
  73. Computer Grade Capacitors
  74. Pls recommend a power amp to build?
  75. Advice about this 45 amp
  76. Any definitive infor on R-C parafeed out there?
  77. 6AS7 as rectifier tube?
  78. Pre Amps
  79. 12 volt preamp
  80. JE LAB's 2001 2A3 & Preamp???
  81. 12AX7WA
  82. found DIY amp - now what?
  83. Magic Eye spectrum analyzer
  84. Tube Companies
  85. B+ from GZ34 Heater CT ?
  86. Unknown mA on Gardners mains transformer
  87. PSU Question
  88. how to mount rca jacks and volume control in wood enclosure?
  89. Giaime's last nightmare - aka RIAA faceoff
  90. 5687 dc 5687 tube amp need help
  91. Input cap needed
  92. 6BQ5\EL84 line amp
  93. Capacitor Values Why so high? & What can I do?
  94. Bias pot question
  95. What I have: 4 Tubes. What I need...
  96. let me fix this bias
  97. A small no-fuss pentode/pentode SE amp
  98. Bleeder Resistor Placement
  99. Modifying Heathkit AA 151
  100. Interstage transformer for PI.
  101. mono center channel out to stereo
  102. Audio Research REF 2 MkII
  103. 717a plate volts
  104. valve preamp criticisms?
  105. LOT of tubes. what can I do?
  106. substitution for 7355
  107. KT88 heaters
  108. Software for drawing tube schematics?
  109. New books posted
  110. Compound bias
  111. Tube Oscillation or Microphonic Question
  112. WTB:OT for el 34 35 watt tube amplifier
  113. Questions on 6H30 simple PF?
  114. "Super Davohm" 1w .1% wirewound
  115. Heathkit AA-100
  116. 6159 for SE Power amp
  117. Do SMPS have a home at high end audio?
  118. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  119. cathode capacitance on anode follower
  120. looking for a building shematic for ECLL800
  121. Iron learning.
  122. Tube Amp - Crackling Sound on Left Channel
  123. Pspice preamp simulation
  124. Supply voltage for 12v6 12B4 heaters
  125. New project and my first circuit...
  126. Choke coupled phase invertor
  127. long cable line drive
  128. What To Do?
  129. Simple Method To Measure Source Resistance?
  130. is this true????
  131. query on the PSU of a preamp
  132. Meshplate Help needed
  133. 6072 tube preamplifier.
  134. hybrid rectifiers and PIV rating
  135. transformerless amp help plz ...
  136. Help me build a tube MIC preamp plz
  137. chinese 845 amp blowing fuses
  138. Question about PIV rating of diodes...
  139. Triode strapped heptode?
  140. The Fisher 500C/800C Challenge (long..dialup warning)
  141. 5 wire output transformer
  142. Orcad & tube library
  143. Wall Wart Tube Power
  144. How can I lower B+ of power supply?
  145. How do you put a CCS under a diff. pair of DHTs???
  146. Just need to make sure.
  147. restoring a marantz 7c
  148. What is Simplest and Best 6L6 PP circuit? (PK)
  149. Good DIY Transformer Article (in Thai)
  150. Tube Swapping Question
  151. Toroid choke question
  152. Pentode CCS for parafeed SEP??
  153. subminiature tube suggestion
  154. MQ431 or Triode's DynaClone
  155. Conrad Johnson MV 45 schematic help
  156. signal wiring
  157. NEW B Need Help on Output Tx Problem
  158. center tap of heater winding
  159. Dynaco Mk IV question
  160. Does this tube amp has enough cap
  161. Acrosound TO-330 output transformers
  162. PP transformer for SE use
  163. Holiday Time!
  164. another beginers first amp thread!
  165. Western Electric 374A
  166. Musen to Jikken 03/1997
  167. Please help me make a schematic
  168. Tips for Hakko 936-12
  169. AC or DC for 300b Heaters
  170. Two irons for PSU
  171. Which DHT for Line stage?
  172. Pye Mozart 10 amplifier
  173. I need a simple schematic with 6J1P tubes
  174. First tube project. Need advice.
  175. Sound Valves M-40 assistance
  176. Has anyone been keeping up on the 'New Sensor' Controversy?
  177. quad esl output transformer.
  178. penta labs?
  179. transformer links
  180. EL84 auto split
  181. TOPWARD MODEL 605 operation manual & Schematic
  182. PREdator, Diff/CF linestage.
  183. Triode Electronics ??
  184. Full Bridge Amp?
  185. Tube literature on pentodes + transformers
  186. so, who made General Motor's "AUTRONIC EYE" tubes?
  187. 6DJ8 Linestage
  188. Annyone seen this problem?
  189. psu to heater on 4 el34 tubes???
  190. 6C33C-B, Reliability--A theory........
  191. Sun Audio preamps
  192. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  193. Carver Phono
  194. Help With 3 Channel Magnavox
  195. simulation software
  196. trickle charge psu?
  197. tube filter
  198. Holiday S-5 K-12G
  199. Couple of (newbie) tube questions...
  200. valve buffer gainclone
  201. Series wiring for heaters
  202. DIY tube cd player ?
  203. Tubes in mp3 players?
  204. Output Impedance?
  205. Hum Pot Question
  206. Which 6AQ5
  207. White flakes in rectifier tube??
  208. Bogen V20 PA Amp Schematic or ?
  209. 12a?7 in Eico HF-12
  210. Home Made Tubes?? has anyone made one, is it possible??
  211. replace 6N1P with 7308
  212. Plate choke on a line stage?
  213. Looking for datasheet
  214. 811A SET Monoblock physical layout suggestions
  215. Automated bias
  216. OTL or parafeed?
  217. Reversing mains toroids for HT
  218. 5881/6L6WGC and 12AT7WA replacement
  219. Direction for Mounting Transformers
  220. Ecf80
  221. feedback phasing
  222. Cryotubes? Cryogenically Frozen valves
  223. European Triode Festival 2005
  224. PSU capacitors
  225. Question on shared rectifier / signal tube filament windings
  226. Heathkit rebuild or...?
  227. Fisher 500B OPT/Feedback Questions
  228. Transformer selection question
  229. Grounded Grid Help
  230. EF86 penthode
  231. Any audio use for ER21A?
  232. Upgrading a sonic frontiers SFS-80
  233. Hum problem
  234. low frequency oscillation in 12B4 linestage
  235. Balanced volume control question
  236. Need Help for Power Supply for gg Preamp
  237. OTL 6c33c Ciufolli v8.2 low voltage rails
  238. Any way to extend OPT low-frequency response?
  239. RCA Phono Stage Redux
  240. About tube codes
  241. More Joules? Tube or Solid State PSU?
  242. EL34 schematic confusion
  243. 2-stage DHT: high-mu vs. interstage stepup
  244. Understanding this power supply
  245. 6V6G recommended schematic
  246. parallel CRC Filtering for B+
  247. 6v6. 6lg Gain Max Voltage
  248. More buffer questions
  249. Benchtop PS
  250. Chassis labels

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