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  1. Why hybrid CCS?
  2. Alembic F-2B
  3. Best cap to cathode tube bypass is ..
  4. Cheap el84 se
  5. Bridge rectifier with capacitors???
  6. 4 volt (dc?) heater from 6.3v
  7. Does anyone recognise this valve amp
  8. PS Capacitor Voltage Rating
  9. Which 6SN7 preamp should I build?
  10. Help on upgrading my Tube Preamp
  11. looking for a non-copyrighted preamp schematic
  12. Problems with cathodyne
  13. more gain needed -> how?
  14. OT: Tribute to Kondo-San
  15. PCL82 SE Tube Amplifier Kit
  16. Rectifier voltage difference, Why?
  17. partial feedback stuff
  18. replace 5y3
  19. Sparking Tubes!
  20. Transformer End Bells
  21. DHT Ultrapath Linestage schematic help
  22. Who manufactured are these EL34's?
  23. Tubes and RoHS compliance?
  24. What do you think about this tube preamp?
  25. What's Ra?
  26. Screen grid resistors
  27. Miller compensation - pros/cons?
  28. G. Kaufman's 6GV8/ECL85 regulated psu
  29. 6CA4/EZ81 heater bias
  30. First stab with PSD for 6CK4 amp-what have I got here?
  31. 81 Rectifier
  32. using 40 VDC supply?
  33. Choke current
  34. Why two diodes per branch on a full wave rectifier?
  35. Alps attenuators
  36. Seeking quality PP pre/mono power project (long)
  37. Transformer location
  38. proper choke placement
  39. 6HE5 as output pentode?
  40. A possible good source for steel chassis
  41. Update on DIY 7591 PP bias cap issue!
  42. 832, can you go SE with these?
  43. PX25 SE without NFB
  44. Change my 8417's Quicksilvers to this?
  45. SE EL84 circuit for bi-amp setup?
  46. CLCLC PSU for 6P14P-EV PP
  47. Shielding a Power Tranny
  48. Unison Research Schema Needed
  49. My 2A3 schematic, comments please.
  50. What happend to the PHOTO GALLERY ?
  51. Valve pre-amp maintenance and purchase
  52. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  53. TPAD Devices Kit
  54. Need Help. Anyone with Philips AG 9016??
  55. Question about input sensitivity?
  56. Any help on sth probably simple?
  57. few questions about my amp, pls come in
  58. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  59. Need regulated solid state PSU
  60. EC31 - Any Datasheet...?
  61. comments on www.shinrock.com???
  62. need schematic reading help
  63. Sound from dummy load?
  64. Loftin-White
  65. RCA 151 'scope
  66. Coupling cap. values???
  67. stepped attenuator
  68. Ideas for input/driver stage of 300B amp
  69. Schematics for Bogen MXM-A Mixer?
  70. yet another which cap is best for the money question
  71. Lowering the value of the lead resistor
  72. power supply recommendation for EL84 amp
  73. Can ECC40 be used in a phono stage?
  74. Better current source than LM317 on a 12B4 line amp
  75. Bias and max current for my 7591 AB amp...
  76. Making sense of the Aikido calculations?
  77. Computer Grade Capacitors
  78. Pls recommend a power amp to build?
  79. Advice about this 45 amp
  80. Any definitive infor on R-C parafeed out there?
  81. 6AS7 as rectifier tube?
  82. Pre Amps
  83. 12 volt preamp
  84. JE LAB's 2001 2A3 & Preamp???
  85. 12AX7WA
  86. found DIY amp - now what?
  87. Magic Eye spectrum analyzer
  88. Tube Companies
  89. B+ from GZ34 Heater CT ?
  90. Unknown mA on Gardners mains transformer
  91. PSU Question
  92. how to mount rca jacks and volume control in wood enclosure?
  93. Freaky Whistle in Guitar Amp
  94. Giaime's last nightmare - aka RIAA faceoff
  95. 5687 dc 5687 tube amp need help
  96. Input cap needed
  97. 6BQ5\EL84 line amp
  98. Capacitor Values Why so high? & What can I do?
  99. Bias pot question
  100. What I have: 4 Tubes. What I need...
  101. let me fix this bias
  102. A small no-fuss pentode/pentode SE amp
  103. Bleeder Resistor Placement
  104. Modifying Heathkit AA 151
  105. Interstage transformer for PI.
  106. Motorrun caps ... GND side?
  107. mono center channel out to stereo
  108. Audio Research REF 2 MkII
  109. 717a plate volts
  110. valve preamp criticisms?
  111. LOT of tubes. what can I do?
  112. substitution for 7355
  113. KT88 heaters
  114. Software for drawing tube schematics?
  115. Guitar Amp HUUUM with an MP3! Reverb Problem
  116. New books posted
  117. Compound bias
  118. Tube Oscillation or Microphonic Question
  119. WTB:OT for el 34 35 watt tube amplifier
  120. Questions on 6H30 simple PF?
  121. "Super Davohm" 1w .1% wirewound
  122. Heathkit AA-100
  123. 6159 for SE Power amp
  124. Do SMPS have a home at high end audio?
  125. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  126. cathode capacitance on anode follower
  127. looking for a building shematic for ECLL800
  128. Iron learning.
  129. Tube Amp - Crackling Sound on Left Channel
  130. Pspice preamp simulation
  131. Supply voltage for 12v6 12B4 heaters
  132. Studio Tube Preamp
  133. New project and my first circuit...
  134. Champ clone fried my soundcard
  135. Choke coupled phase invertor
  136. long cable line drive
  137. What To Do?
  138. Simple Method To Measure Source Resistance?
  139. is this true????
  140. query on the PSU of a preamp
  141. Meshplate Help needed
  142. 6072 tube preamplifier.
  143. hybrid rectifiers and PIV rating
  144. transformerless amp help plz ...
  145. Help me build a tube MIC preamp plz
  146. chinese 845 amp blowing fuses
  147. Question about PIV rating of diodes...
  148. Triode strapped heptode?
  149. The Fisher 500C/800C Challenge (long..dialup warning)
  150. 5 wire output transformer
  151. Orcad & tube library
  152. Wall Wart Tube Power
  153. How can I lower B+ of power supply?
  154. How do you put a CCS under a diff. pair of DHTs???
  155. Just need to make sure.
  156. restoring a marantz 7c
  157. Who sells a tube bass guitar amp kit??
  158. What is Simplest and Best 6L6 PP circuit? (PK)
  159. Good DIY Transformer Article (in Thai)
  160. Tube Swapping Question
  161. Toroid choke question
  162. Pentode CCS for parafeed SEP??
  163. subminiature tube suggestion
  164. MQ431 or Triode's DynaClone
  165. Conrad Johnson MV 45 schematic help
  166. signal wiring
  167. NEW B Need Help on Output Tx Problem
  168. center tap of heater winding
  169. Dynaco Mk IV question
  170. Does this tube amp has enough cap
  171. Acrosound TO-330 output transformers
  172. PP transformer for SE use
  173. Holiday Time!
  174. another beginers first amp thread!
  175. Western Electric 374A
  176. Musen to Jikken 03/1997
  177. Please help me make a schematic
  178. Tips for Hakko 936-12
  179. AC or DC for 300b Heaters
  180. Two irons for PSU
  181. Which DHT for Line stage?
  182. Pye Mozart 10 amplifier
  183. I need a simple schematic with 6J1P tubes
  184. First tube project. Need advice.
  185. Sound Valves M-40 assistance
  186. Has anyone been keeping up on the 'New Sensor' Controversy?
  187. quad esl output transformer.
  188. penta labs?
  189. New Build (Guitar Amp)
  190. transformer links
  191. EL84 auto split
  192. TOPWARD MODEL 605 operation manual & Schematic
  193. PREdator, Diff/CF linestage.
  194. Triode Electronics ??
  195. Full Bridge Amp?
  196. Tube literature on pentodes + transformers
  197. so, who made General Motor's "AUTRONIC EYE" tubes?
  198. 6DJ8 Linestage
  199. Annyone seen this problem?
  200. psu to heater on 4 el34 tubes???
  201. 6C33C-B, Reliability--A theory........
  202. Sun Audio preamps
  203. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  204. Carver Phono
  205. Help With 3 Channel Magnavox
  206. simulation software
  207. trickle charge psu?
  208. tube filter
  209. Holiday S-5 K-12G
  210. Couple of (newbie) tube questions...
  211. valve buffer gainclone
  212. Series wiring for heaters
  213. DIY tube cd player ?
  214. Tubes in mp3 players?
  215. Output Impedance?
  216. Hum Pot Question
  217. Which 6AQ5
  218. White flakes in rectifier tube??
  219. Bogen V20 PA Amp Schematic or ?
  220. 12a?7 in Eico HF-12
  221. Home Made Tubes?? has anyone made one, is it possible??
  222. replace 6N1P with 7308
  223. Plate choke on a line stage?
  224. Looking for datasheet
  225. 811A SET Monoblock physical layout suggestions
  226. Automated bias
  227. OTL or parafeed?
  228. tubes: Jcm 900 Slx 50watt
  229. Reversing mains toroids for HT
  230. 5881/6L6WGC and 12AT7WA replacement
  231. Direction for Mounting Transformers
  232. Ecf80
  233. feedback phasing
  234. Cryotubes? Cryogenically Frozen valves
  235. European Triode Festival 2005
  236. PSU capacitors
  237. Question on shared rectifier / signal tube filament windings
  238. Heathkit rebuild or...?
  239. Fisher 500B OPT/Feedback Questions
  240. Transformer selection question
  241. Grounded Grid Help
  242. EF86 penthode
  243. Any audio use for ER21A?
  244. Upgrading a sonic frontiers SFS-80
  245. Hum problem
  246. low frequency oscillation in 12B4 linestage
  247. Balanced volume control question
  248. Need Help for Power Supply for gg Preamp
  249. OTL 6c33c Ciufolli v8.2 low voltage rails
  250. Any way to extend OPT low-frequency response?

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