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  1. Tube and DIY Newbie Kel84 vs Stoetkit Jr.2
  2. ZOTL and ferrites
  3. 6V6 vs EL84 SE UL
  4. Speaker questions for a Silvertone 1472
  5. Component selection
  6. Snap sound on preamp powerup
  7. Secondary voltage for heaters
  8. good schematic archive site
  9. Transitional SIlvertoneAmp between 1472 and 1482?
  10. Cheap Source for Hammond 125ESE
  11. PCF801 - pentode section has remote or sharp cut-off?
  12. Tube as a desk lamp
  13. Ella EL34 Bias Help
  14. tube diy can or can t
  15. Quad II Problems
  16. Choke input P/supply and critical damping
  17. balanced grounded grid preamp
  18. Fluorescent ballasts in SE
  19. Hammond Transformers and EZ80/EZ81
  20. Look what I found this weekend!
  21. Question on 300B tubes from Parts Connexion
  22. Russian Tubes
  23. Help a first timer to select...
  24. GE 5692 BLACK base?
  25. sources on the web for chinese amps
  26. How much capacitance in a power supply
  27. Parallel 12AT7 for 2A3 driver?
  28. Maida's regulator
  29. Common Mode Chokes for Heater Supplies
  30. Ming Da MC34B....passive or active pre amp?
  31. tube power supply upgrade... elna's, RTX, infinicap
  32. What tube do you think this OPT matches?
  33. safety fuse
  34. Short and sweet review of Sun Audio SV-300BE
  35. Help selecting a DIY schematic
  36. OP Transformer power rating guesstimate
  37. need a lot help on an el34 project :P
  38. Anode Follower
  39. CCS for tubes/valves: PCBs
  40. Improvement to DM's Generic Triode Model for 12AU7
  41. ccs, direct coupling and stuff
  42. Replica Pre QUAD 22 - Questions on mids
  43. Is this cap ok for audio?
  44. Remote Controlled Stepped Attenuator
  45. UltraLinear in toroidal parafeed, my findings.
  46. Help to tame a 12AX7/6AQ5 circuit
  47. DIY something like iMPAMP??
  48. Have you seen this tester?
  49. Help with taming a 12AX7 and 6AQ5a amp
  50. Linear Technology 1083CP adjusting problem
  51. radiation tubes
  52. 813 socket dimensions
  53. Cheap SE output transformers
  54. BIAS and B+ caps WKZ or NH
  55. Cleaning tubes...
  56. Manfred Huber
  57. IEC standards, anywhere?
  58. possible volume and balance control - does this look like it will work well?
  59. EL84 Amp - Baby Huey
  60. 6X4
  61. What do you guys use for HV toggles?
  62. Balanced Operation Output Transformer Questions from N00b
  63. Static stain cleaning
  64. 12AX7 preamp project
  65. SE 1.5W OTL
  66. Cross-coupled NFB for PP Pentode
  67. Parallel triodes - CONS?
  68. output transformer spec questions
  69. Choosing Valve
  70. opinions wanted - Lafayette Stereo 224 Tube Amp
  71. New KT77 Tubes by JJ
  72. 60HL5?
  73. Standby switch
  74. Problems With Simple Gounded Cathode Gain Stage
  75. srpp 6c33c
  76. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  77. Anyone in gta know their tubes?
  78. 801 low power SE amp
  79. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  80. OPT resistance for EL84 PP Class A
  81. Whats in this amplifier?
  82. Whose logo?
  83. pentode phase splitter
  84. Is this EL84M UL PP OK?
  85. Tube preamp question...also, chassis layout
  86. Quad II Mods/Tweeks
  87. Trying to recreate a Fisher SA-16
  88. CCS, how it actually works?
  89. 400V CRC PS, what do I do with it?
  90. Does anyone has MILBERT BAM230 TUBE CAR POWER AMPLIFIER
  91. Valve sockets
  92. Can I use 12AT7?
  93. Music Reference RM5 mkIII
  94. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  95. Looking for a link on power supply design
  96. Is feedback required for UL EL84PP?
  97. Someone working on an insane tube project?
  98. Load line frustration
  99. Is 12B4/A good for differential pair?
  100. Heretical Unity Gain line stage PLUS a little gain ?
  101. tube vibration
  102. Small temp voltage on phono input-problem?
  103. What's it all about?
  104. IXYS GaAs Schottky Diodes.
  105. Maplin 4-20
  106. Line preamp using 2 ECC88 per channel
  107. What to use as a nice amp case?
  108. Signal Tube Longevity ?!?
  109. HK 250 power amp tube amp schematic
  110. Need help with connecting OPT.
  111. 6SL7 driving SE EL34 ?
  112. power supply tranny
  113. Output Transformer Background
  114. Schematic
  115. no dc passing the opt
  116. New preamp schematics
  117. Transformer ID & Specs Sheet Help
  118. I Know Some Tube Flavors Are Worth More Than Others...
  119. Why hybrid CCS?
  120. Alembic F-2B
  121. Best cap to cathode tube bypass is ..
  122. Cheap el84 se
  123. Bridge rectifier with capacitors???
  124. 4 volt (dc?) heater from 6.3v
  125. Does anyone recognise this valve amp
  126. PS Capacitor Voltage Rating
  127. Which 6SN7 preamp should I build?
  128. Help on upgrading my Tube Preamp
  129. looking for a non-copyrighted preamp schematic
  130. Problems with cathodyne
  131. more gain needed -> how?
  132. OT: Tribute to Kondo-San
  133. PCL82 SE Tube Amplifier Kit
  134. Rectifier voltage difference, Why?
  135. partial feedback stuff
  136. replace 5y3
  137. Sparking Tubes!
  138. Transformer End Bells
  139. DHT Ultrapath Linestage schematic help
  140. Who manufactured are these EL34's?
  141. Tubes and RoHS compliance?
  142. What do you think about this tube preamp?
  143. What's Ra?
  144. Screen grid resistors
  145. Miller compensation - pros/cons?
  146. G. Kaufman's 6GV8/ECL85 regulated psu
  147. 6CA4/EZ81 heater bias
  148. First stab with PSD for 6CK4 amp-what have I got here?
  149. 81 Rectifier
  150. using 40 VDC supply?
  151. Choke current
  152. Why two diodes per branch on a full wave rectifier?
  153. Alps attenuators
  154. Seeking quality PP pre/mono power project (long)
  155. Transformer location
  156. proper choke placement
  157. 6HE5 as output pentode?
  158. A possible good source for steel chassis
  159. Update on DIY 7591 PP bias cap issue!
  160. 832, can you go SE with these?
  161. PX25 SE without NFB
  162. Change my 8417's Quicksilvers to this?
  163. SE EL84 circuit for bi-amp setup?
  164. CLCLC PSU for 6P14P-EV PP
  165. Shielding a Power Tranny
  166. Unison Research Schema Needed
  167. My 2A3 schematic, comments please.
  168. What happend to the PHOTO GALLERY ?
  169. Valve pre-amp maintenance and purchase
  170. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  171. TPAD Devices Kit
  172. Need Help. Anyone with Philips AG 9016??
  173. Question about input sensitivity?
  174. Any help on sth probably simple?
  175. few questions about my amp, pls come in
  176. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  177. Need regulated solid state PSU
  178. EC31 - Any Datasheet...?
  179. comments on www.shinrock.com???
  180. need schematic reading help
  181. Sound from dummy load?
  182. Loftin-White
  183. RCA 151 'scope
  184. Coupling cap. values???
  185. stepped attenuator
  186. Ideas for input/driver stage of 300B amp
  187. Schematics for Bogen MXM-A Mixer?
  188. yet another which cap is best for the money question
  189. Lowering the value of the lead resistor
  190. power supply recommendation for EL84 amp
  191. Can ECC40 be used in a phono stage?
  192. Better current source than LM317 on a 12B4 line amp
  193. Bias and max current for my 7591 AB amp...
  194. Making sense of the Aikido calculations?
  195. Computer Grade Capacitors
  196. Pls recommend a power amp to build?
  197. Advice about this 45 amp
  198. Any definitive infor on R-C parafeed out there?
  199. 6AS7 as rectifier tube?
  200. Pre Amps
  201. 12 volt preamp
  202. JE LAB's 2001 2A3 & Preamp???
  203. 12AX7WA
  204. found DIY amp - now what?
  205. Magic Eye spectrum analyzer
  206. Tube Companies
  207. B+ from GZ34 Heater CT ?
  208. Unknown mA on Gardners mains transformer
  209. PSU Question
  210. how to mount rca jacks and volume control in wood enclosure?
  211. Freaky Whistle in Guitar Amp
  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. Motorrun caps ... GND side?
  225. mono center channel out to stereo
  226. Audio Research REF 2 MkII
  227. 717a plate volts
  228. valve preamp criticisms?
  229. LOT of tubes. what can I do?
  230. substitution for 7355
  231. KT88 heaters
  232. Software for drawing tube schematics?
  233. Guitar Amp HUUUM with an MP3! Reverb Problem
  234. New books posted
  235. Compound bias
  236. Tube Oscillation or Microphonic Question
  237. WTB:OT for el 34 35 watt tube amplifier
  238. Questions on 6H30 simple PF?
  239. "Super Davohm" 1w .1% wirewound
  240. Heathkit AA-100
  241. 6159 for SE Power amp
  242. Do SMPS have a home at high end audio?
  243. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  244. cathode capacitance on anode follower
  245. looking for a building shematic for ECLL800
  246. Iron learning.
  247. Tube Amp - Crackling Sound on Left Channel
  248. Pspice preamp simulation
  249. Supply voltage for 12v6 12B4 heaters
  250. Studio Tube Preamp

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