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  1. Drive Current for EL509 Enhanced Triode
  2. How to use Svetlana 6d22s?
  3. James Singapore
  4. Aikido using a #26 tube?
  5. Tube and DIY Newbie Kel84 vs Stoetkit Jr.2
  6. ZOTL and ferrites
  7. 6V6 vs EL84 SE UL
  8. Component selection
  9. Snap sound on preamp powerup
  10. Secondary voltage for heaters
  11. good schematic archive site
  12. Transitional SIlvertoneAmp between 1472 and 1482?
  13. Cheap Source for Hammond 125ESE
  14. PCF801 - pentode section has remote or sharp cut-off?
  15. Tube as a desk lamp
  16. Ella EL34 Bias Help
  17. tube diy can or can t
  18. Quad II Problems
  19. Choke input P/supply and critical damping
  20. balanced grounded grid preamp
  21. Fluorescent ballasts in SE
  22. Hammond Transformers and EZ80/EZ81
  23. Look what I found this weekend!
  24. Question on 300B tubes from Parts Connexion
  25. Russian Tubes
  26. Help a first timer to select...
  27. GE 5692 BLACK base?
  28. sources on the web for chinese amps
  29. How much capacitance in a power supply
  30. Parallel 12AT7 for 2A3 driver?
  31. Maida's regulator
  32. Common Mode Chokes for Heater Supplies
  33. Ming Da MC34B....passive or active pre amp?
  34. tube power supply upgrade... elna's, RTX, infinicap
  35. What tube do you think this OPT matches?
  36. safety fuse
  37. Short and sweet review of Sun Audio SV-300BE
  38. Help selecting a DIY schematic
  39. OP Transformer power rating guesstimate
  40. need a lot help on an el34 project :P
  41. Anode Follower
  42. CCS for tubes/valves: PCBs
  43. Improvement to DM's Generic Triode Model for 12AU7
  44. ccs, direct coupling and stuff
  45. Replica Pre QUAD 22 - Questions on mids
  46. Is this cap ok for audio?
  47. Remote Controlled Stepped Attenuator
  48. UltraLinear in toroidal parafeed, my findings.
  49. Help to tame a 12AX7/6AQ5 circuit
  50. DIY something like iMPAMP??
  51. Have you seen this tester?
  52. Help with taming a 12AX7 and 6AQ5a amp
  53. Linear Technology 1083CP adjusting problem
  54. radiation tubes
  55. 813 socket dimensions
  56. Cheap SE output transformers
  57. BIAS and B+ caps WKZ or NH
  58. Cleaning tubes...
  59. Manfred Huber
  60. IEC standards, anywhere?
  61. possible volume and balance control - does this look like it will work well?
  62. EL84 Amp - Baby Huey
  63. 6X4
  64. What do you guys use for HV toggles?
  65. Balanced Operation Output Transformer Questions from N00b
  66. Static stain cleaning
  67. 12AX7 preamp project
  68. SE 1.5W OTL
  69. Cross-coupled NFB for PP Pentode
  70. Parallel triodes - CONS?
  71. output transformer spec questions
  72. Choosing Valve
  73. opinions wanted - Lafayette Stereo 224 Tube Amp
  74. New KT77 Tubes by JJ
  75. 60HL5?
  76. Standby switch
  77. Problems With Simple Gounded Cathode Gain Stage
  78. srpp 6c33c
  79. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  80. Anyone in gta know their tubes?
  81. 801 low power SE amp
  82. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  83. OPT resistance for EL84 PP Class A
  84. Whats in this amplifier?
  85. Whose logo?
  86. pentode phase splitter
  87. Is this EL84M UL PP OK?
  88. Tube preamp question...also, chassis layout
  89. Quad II Mods/Tweeks
  90. Trying to recreate a Fisher SA-16
  91. CCS, how it actually works?
  92. 400V CRC PS, what do I do with it?
  93. Does anyone has Milbert BAM230 tube car power amplifier
  94. Valve sockets
  95. Can I use 12AT7?
  96. Music Reference RM5 mkIII
  97. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  98. Looking for a link on power supply design
  99. Is feedback required for UL EL84PP?
  100. Someone working on an insane tube project?
  101. Load line frustration
  102. Is 12B4/A good for differential pair?
  103. Heretical Unity Gain line stage PLUS a little gain ?
  104. tube vibration
  105. Small temp voltage on phono input-problem?
  106. What's it all about?
  107. IXYS GaAs Schottky Diodes.
  108. Maplin 4-20
  109. Line preamp using 2 ECC88 per channel
  110. What to use as a nice amp case?
  111. Signal Tube Longevity ?!?
  112. HK 250 power amp tube amp schematic
  113. Need help with connecting OPT.
  114. 6SL7 driving SE EL34 ?
  115. power supply tranny
  116. Output Transformer Background
  117. Schematic
  118. no dc passing the opt
  119. New preamp schematics
  120. Transformer ID & Specs Sheet Help
  121. I Know Some Tube Flavors Are Worth More Than Others...
  122. Why hybrid CCS?
  123. Best cap to cathode tube bypass is ..
  124. Cheap el84 se
  125. Bridge rectifier with capacitors???
  126. 4 volt (dc?) heater from 6.3v
  127. Does anyone recognise this valve amp
  128. Which 6SN7 preamp should I build?
  129. Help on upgrading my Tube Preamp
  130. looking for a non-copyrighted preamp schematic
  131. Problems with cathodyne
  132. more gain needed -> how?
  133. OT: Tribute to Kondo-San
  134. PCL82 SE Tube Amplifier Kit
  135. Rectifier voltage difference, Why?
  136. partial feedback stuff
  137. replace 5y3
  138. Sparking Tubes!
  139. Transformer End Bells
  140. DHT Ultrapath Linestage schematic help
  141. Who manufactured are these EL34's?
  142. Tubes and RoHS compliance?
  143. What do you think about this tube preamp?
  144. What's Ra?
  145. Screen grid resistors
  146. Miller compensation - pros/cons?
  147. G. Kaufman's 6GV8/ECL85 regulated psu
  148. 6CA4/EZ81 heater bias
  149. First stab with PSD for 6CK4 amp-what have I got here?
  150. 81 Rectifier
  151. using 40 VDC supply?
  152. Choke current
  153. Why two diodes per branch on a full wave rectifier?
  154. Alps attenuators
  155. Seeking quality PP pre/mono power project (long)
  156. Transformer location
  157. proper choke placement
  158. 6HE5 as output pentode?
  159. A possible good source for steel chassis
  160. Update on DIY 7591 PP bias cap issue!
  161. 832, can you go SE with these?
  162. PX25 SE without NFB
  163. Change my 8417's Quicksilvers to this?
  164. SE EL84 circuit for bi-amp setup?
  165. CLCLC PSU for 6P14P-EV PP
  166. Shielding a Power Tranny
  167. Unison Research Schema Needed
  168. My 2A3 schematic, comments please.
  169. What happend to the PHOTO GALLERY ?
  170. Valve pre-amp maintenance and purchase
  171. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  172. TPAD Devices Kit
  173. Need Help. Anyone with Philips AG 9016??
  174. Question about input sensitivity?
  175. Any help on sth probably simple?
  176. few questions about my amp, pls come in
  177. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  178. Need regulated solid state PSU
  179. EC31 - Any Datasheet...?
  180. comments on www.shinrock.com???
  181. need schematic reading help
  182. Sound from dummy load?
  183. Loftin-White
  184. RCA 151 'scope
  185. Coupling cap. values???
  186. stepped attenuator
  187. Ideas for input/driver stage of 300B amp
  188. Schematics for Bogen MXM-A Mixer?
  189. yet another which cap is best for the money question
  190. Lowering the value of the lead resistor
  191. power supply recommendation for EL84 amp
  192. Can ECC40 be used in a phono stage?
  193. Better current source than LM317 on a 12B4 line amp
  194. Bias and max current for my 7591 AB amp...
  195. Making sense of the Aikido calculations?
  196. Computer Grade Capacitors
  197. Pls recommend a power amp to build?
  198. Advice about this 45 amp
  199. Any definitive infor on R-C parafeed out there?
  200. 6AS7 as rectifier tube?
  201. Pre Amps
  202. 12 volt preamp
  203. JE LAB's 2001 2A3 & Preamp???
  204. 12AX7WA
  205. found DIY amp - now what?
  206. Magic Eye spectrum analyzer
  207. Tube Companies
  208. B+ from GZ34 Heater CT ?
  209. Unknown mA on Gardners mains transformer
  210. PSU Question
  211. how to mount rca jacks and volume control in wood enclosure?
  212. Giaime's last nightmare - aka RIAA faceoff
  213. 5687 dc 5687 tube amp need help
  214. Input cap needed
  215. 6BQ5\EL84 line amp
  216. Capacitor Values Why so high? & What can I do?
  217. Bias pot question
  218. What I have: 4 Tubes. What I need...
  219. let me fix this bias
  220. A small no-fuss pentode/pentode SE amp
  221. Bleeder Resistor Placement
  222. Modifying Heathkit AA 151
  223. Interstage transformer for PI.
  224. mono center channel out to stereo
  225. Audio Research REF 2 MkII
  226. 717a plate volts
  227. valve preamp criticisms?
  228. LOT of tubes. what can I do?
  229. substitution for 7355
  230. KT88 heaters
  231. Software for drawing tube schematics?
  232. New books posted
  233. Compound bias
  234. Tube Oscillation or Microphonic Question
  235. WTB:OT for el 34 35 watt tube amplifier
  236. Questions on 6H30 simple PF?
  237. "Super Davohm" 1w .1% wirewound
  238. Heathkit AA-100
  239. 6159 for SE Power amp
  240. Do SMPS have a home at high end audio?
  241. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  242. cathode capacitance on anode follower
  243. looking for a building shematic for ECLL800
  244. Iron learning.
  245. Tube Amp - Crackling Sound on Left Channel
  246. Pspice preamp simulation
  247. Supply voltage for 12v6 12B4 heaters
  248. New project and my first circuit...
  249. Choke coupled phase invertor
  250. long cable line drive

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