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  1. What's it all about?
  2. IXYS GaAs Schottky Diodes.
  3. Maplin 4-20
  4. Line preamp using 2 ECC88 per channel
  5. What to use as a nice amp case?
  6. Signal Tube Longevity ?!?
  7. HK 250 power amp tube amp schematic
  8. Need help with connecting OPT.
  9. 6SL7 driving SE EL34 ?
  10. power supply tranny
  11. Output Transformer Background
  12. Schematic
  13. no dc passing the opt
  14. New preamp schematics
  15. Transformer ID & Specs Sheet Help
  16. I Know Some Tube Flavors Are Worth More Than Others...
  17. Why hybrid CCS?
  18. Alembic F-2B
  19. Best cap to cathode tube bypass is ..
  20. Cheap el84 se
  21. Bridge rectifier with capacitors???
  22. 4 volt (dc?) heater from 6.3v
  23. Does anyone recognise this valve amp
  24. PS Capacitor Voltage Rating
  25. Which 6SN7 preamp should I build?
  26. Help on upgrading my Tube Preamp
  27. looking for a non-copyrighted preamp schematic
  28. Problems with cathodyne
  29. more gain needed -> how?
  30. OT: Tribute to Kondo-San
  31. PCL82 SE Tube Amplifier Kit
  32. Rectifier voltage difference, Why?
  33. partial feedback stuff
  34. replace 5y3
  35. Sparking Tubes!
  36. Transformer End Bells
  37. DHT Ultrapath Linestage schematic help
  38. Who manufactured are these EL34's?
  39. Tubes and RoHS compliance?
  40. What do you think about this tube preamp?
  41. What's Ra?
  42. Screen grid resistors
  43. Miller compensation - pros/cons?
  44. G. Kaufman's 6GV8/ECL85 regulated psu
  45. 6CA4/EZ81 heater bias
  46. First stab with PSD for 6CK4 amp-what have I got here?
  47. 81 Rectifier
  48. using 40 VDC supply?
  49. Choke current
  50. Why two diodes per branch on a full wave rectifier?
  51. Alps attenuators
  52. Seeking quality PP pre/mono power project (long)
  53. Transformer location
  54. proper choke placement
  55. 6HE5 as output pentode?
  56. A possible good source for steel chassis
  57. Update on DIY 7591 PP bias cap issue!
  58. 832, can you go SE with these?
  59. PX25 SE without NFB
  60. Change my 8417's Quicksilvers to this?
  61. SE EL84 circuit for bi-amp setup?
  62. CLCLC PSU for 6P14P-EV PP
  63. Shielding a Power Tranny
  64. Unison Research Schema Needed
  65. My 2A3 schematic, comments please.
  66. What happend to the PHOTO GALLERY ?
  67. Valve pre-amp maintenance and purchase
  68. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  69. TPAD Devices Kit
  70. Need Help. Anyone with Philips AG 9016??
  71. Question about input sensitivity?
  72. Any help on sth probably simple?
  73. few questions about my amp, pls come in
  74. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  75. Need regulated solid state PSU
  76. EC31 - Any Datasheet...?
  77. comments on www.shinrock.com???
  78. need schematic reading help
  79. Sound from dummy load?
  80. Loftin-White
  81. RCA 151 'scope
  82. Coupling cap. values???
  83. stepped attenuator
  84. Ideas for input/driver stage of 300B amp
  85. Schematics for Bogen MXM-A Mixer?
  86. yet another which cap is best for the money question
  87. Lowering the value of the lead resistor
  88. power supply recommendation for EL84 amp
  89. Can ECC40 be used in a phono stage?
  90. Better current source than LM317 on a 12B4 line amp
  91. Bias and max current for my 7591 AB amp...
  92. Making sense of the Aikido calculations?
  93. Computer Grade Capacitors
  94. Pls recommend a power amp to build?
  95. Advice about this 45 amp
  96. Any definitive infor on R-C parafeed out there?
  97. 6AS7 as rectifier tube?
  98. Pre Amps
  99. 12 volt preamp
  100. JE LAB's 2001 2A3 & Preamp???
  101. 12AX7WA
  102. found DIY amp - now what?
  103. Magic Eye spectrum analyzer
  104. Tube Companies
  105. B+ from GZ34 Heater CT ?
  106. Unknown mA on Gardners mains transformer
  107. PSU Question
  108. how to mount rca jacks and volume control in wood enclosure?
  109. Freaky Whistle in Guitar Amp
  110. Giaime's last nightmare - aka RIAA faceoff
  111. 5687 dc 5687 tube amp need help
  112. Input cap needed
  113. 6BQ5\EL84 line amp
  114. Capacitor Values Why so high? & What can I do?
  115. Bias pot question
  116. What I have: 4 Tubes. What I need...
  117. let me fix this bias
  118. A small no-fuss pentode/pentode SE amp
  119. Bleeder Resistor Placement
  120. Modifying Heathkit AA 151
  121. Interstage transformer for PI.
  122. Motorrun caps ... GND side?
  123. mono center channel out to stereo
  124. Audio Research REF 2 MkII
  125. 717a plate volts
  126. valve preamp criticisms?
  127. LOT of tubes. what can I do?
  128. substitution for 7355
  129. KT88 heaters
  130. Software for drawing tube schematics?
  131. Guitar Amp HUUUM with an MP3! Reverb Problem
  132. New books posted
  133. Compound bias
  134. Tube Oscillation or Microphonic Question
  135. WTB:OT for el 34 35 watt tube amplifier
  136. Questions on 6H30 simple PF?
  137. "Super Davohm" 1w .1% wirewound
  138. Heathkit AA-100
  139. 6159 for SE Power amp
  140. Do SMPS have a home at high end audio?
  141. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  142. cathode capacitance on anode follower
  143. looking for a building shematic for ECLL800
  144. Iron learning.
  145. Tube Amp - Crackling Sound on Left Channel
  146. Pspice preamp simulation
  147. Supply voltage for 12v6 12B4 heaters
  148. Studio Tube Preamp
  149. New project and my first circuit...
  150. Champ clone fried my soundcard
  151. Choke coupled phase invertor
  152. long cable line drive
  153. What To Do?
  154. Simple Method To Measure Source Resistance?
  155. is this true????
  156. query on the PSU of a preamp
  157. Meshplate Help needed
  158. 6072 tube preamplifier.
  159. hybrid rectifiers and PIV rating
  160. transformerless amp help plz ...
  161. Help me build a tube MIC preamp plz
  162. chinese 845 amp blowing fuses
  163. Question about PIV rating of diodes...
  164. Triode strapped heptode?
  165. The Fisher 500C/800C Challenge (long..dialup warning)
  166. 5 wire output transformer
  167. Orcad & tube library
  168. Wall Wart Tube Power
  169. How can I lower B+ of power supply?
  170. How do you put a CCS under a diff. pair of DHTs???
  171. Just need to make sure.
  172. restoring a marantz 7c
  173. Who sells a tube bass guitar amp kit??
  174. What is Simplest and Best 6L6 PP circuit? (PK)
  175. Good DIY Transformer Article (in Thai)
  176. Tube Swapping Question
  177. Toroid choke question
  178. Pentode CCS for parafeed SEP??
  179. subminiature tube suggestion
  180. MQ431 or Triode's DynaClone
  181. Conrad Johnson MV 45 schematic help
  182. signal wiring
  183. NEW B Need Help on Output Tx Problem
  184. center tap of heater winding
  185. Dynaco Mk IV question
  186. Does this tube amp has enough cap
  187. Acrosound TO-330 output transformers
  188. PP transformer for SE use
  189. Holiday Time!
  190. another beginers first amp thread!
  191. Western Electric 374A
  192. Musen to Jikken 03/1997
  193. Please help me make a schematic
  194. Tips for Hakko 936-12
  195. AC or DC for 300b Heaters
  196. Two irons for PSU
  197. Which DHT for Line stage?
  198. Pye Mozart 10 amplifier
  199. I need a simple schematic with 6J1P tubes
  200. First tube project. Need advice.
  201. Sound Valves M-40 assistance
  202. Has anyone been keeping up on the 'New Sensor' Controversy?
  203. quad esl output transformer.
  204. penta labs?
  205. New Build (Guitar Amp)
  206. transformer links
  207. EL84 auto split
  208. TOPWARD MODEL 605 operation manual & Schematic
  209. PREdator, Diff/CF linestage.
  210. Triode Electronics ??
  211. Full Bridge Amp?
  212. Tube literature on pentodes + transformers
  213. so, who made General Motor's "AUTRONIC EYE" tubes?
  214. 6DJ8 Linestage
  215. Annyone seen this problem?
  216. psu to heater on 4 el34 tubes???
  217. 6C33C-B, Reliability--A theory........
  218. Sun Audio preamps
  219. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  220. Carver Phono
  221. Help With 3 Channel Magnavox
  222. simulation software
  223. trickle charge psu?
  224. tube filter
  225. Holiday S-5 K-12G
  226. Couple of (newbie) tube questions...
  227. valve buffer gainclone
  228. Series wiring for heaters
  229. DIY tube cd player ?
  230. Tubes in mp3 players?
  231. Output Impedance?
  232. Hum Pot Question
  233. Which 6AQ5
  234. White flakes in rectifier tube??
  235. Bogen V20 PA Amp Schematic or ?
  236. 12a?7 in Eico HF-12
  237. Home Made Tubes?? has anyone made one, is it possible??
  238. replace 6N1P with 7308
  239. Plate choke on a line stage?
  240. Looking for datasheet
  241. 811A SET Monoblock physical layout suggestions
  242. Automated bias
  243. OTL or parafeed?
  244. tubes: Jcm 900 Slx 50watt
  245. Reversing mains toroids for HT
  246. 5881/6L6WGC and 12AT7WA replacement
  247. Direction for Mounting Transformers
  248. Ecf80
  249. feedback phasing
  250. Cryotubes? Cryogenically Frozen valves

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