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  1. What tube do you think this OPT matches?
  2. safety fuse
  3. Short and sweet review of Sun Audio SV-300BE
  4. Help selecting a DIY schematic
  5. OP Transformer power rating guesstimate
  6. need a lot help on an el34 project :P
  7. Anode Follower
  8. CCS for tubes/valves: PCBs
  9. Improvement to DM's Generic Triode Model for 12AU7
  10. ccs, direct coupling and stuff
  11. Replica Pre QUAD 22 - Questions on mids
  12. Is this cap ok for audio?
  13. Remote Controlled Stepped Attenuator
  14. UltraLinear in toroidal parafeed, my findings.
  15. Help to tame a 12AX7/6AQ5 circuit
  16. DIY something like iMPAMP??
  17. Have you seen this tester?
  18. Help with taming a 12AX7 and 6AQ5a amp
  19. Linear Technology 1083CP adjusting problem
  20. radiation tubes
  21. 813 socket dimensions
  22. Cheap SE output transformers
  23. BIAS and B+ caps WKZ or NH
  24. Cleaning tubes...
  25. Manfred Huber
  26. IEC standards, anywhere?
  27. possible volume and balance control - does this look like it will work well?
  28. EL84 Amp - Baby Huey
  29. 6X4
  30. What do you guys use for HV toggles?
  31. Balanced Operation Output Transformer Questions from N00b
  32. Static stain cleaning
  33. 12AX7 preamp project
  34. SE 1.5W OTL
  35. Cross-coupled NFB for PP Pentode
  36. Parallel triodes - CONS?
  37. output transformer spec questions
  38. Choosing Valve
  39. opinions wanted - Lafayette Stereo 224 Tube Amp
  40. New KT77 Tubes by JJ
  41. 60HL5?
  42. Standby switch
  43. Problems With Simple Gounded Cathode Gain Stage
  44. srpp 6c33c
  45. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  46. Anyone in gta know their tubes?
  47. 801 low power SE amp
  48. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  49. OPT resistance for EL84 PP Class A
  50. Whats in this amplifier?
  51. Whose logo?
  52. pentode phase splitter
  53. Is this EL84M UL PP OK?
  54. Tube preamp question...also, chassis layout
  55. Quad II Mods/Tweeks
  56. Trying to recreate a Fisher SA-16
  57. CCS, how it actually works?
  58. 400V CRC PS, what do I do with it?
  59. Does anyone has MILBERT BAM230 TUBE CAR POWER AMPLIFIER
  60. Valve sockets
  61. Can I use 12AT7?
  62. Music Reference RM5 mkIII
  63. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  64. Looking for a link on power supply design
  65. Is feedback required for UL EL84PP?
  66. Someone working on an insane tube project?
  67. Load line frustration
  68. Is 12B4/A good for differential pair?
  69. Heretical Unity Gain line stage PLUS a little gain ?
  70. tube vibration
  71. Small temp voltage on phono input-problem?
  72. What's it all about?
  73. IXYS GaAs Schottky Diodes.
  74. Maplin 4-20
  75. Line preamp using 2 ECC88 per channel
  76. What to use as a nice amp case?
  77. Signal Tube Longevity ?!?
  78. HK 250 power amp tube amp schematic
  79. Need help with connecting OPT.
  80. 6SL7 driving SE EL34 ?
  81. power supply tranny
  82. Output Transformer Background
  83. Schematic
  84. no dc passing the opt
  85. New preamp schematics
  86. Transformer ID & Specs Sheet Help
  87. I Know Some Tube Flavors Are Worth More Than Others...
  88. Why hybrid CCS?
  89. Alembic F-2B
  90. Best cap to cathode tube bypass is ..
  91. Cheap el84 se
  92. Bridge rectifier with capacitors???
  93. 4 volt (dc?) heater from 6.3v
  94. Does anyone recognise this valve amp
  95. PS Capacitor Voltage Rating
  96. Which 6SN7 preamp should I build?
  97. Help on upgrading my Tube Preamp
  98. looking for a non-copyrighted preamp schematic
  99. Problems with cathodyne
  100. more gain needed -> how?
  101. OT: Tribute to Kondo-San
  102. PCL82 SE Tube Amplifier Kit
  103. Rectifier voltage difference, Why?
  104. partial feedback stuff
  105. replace 5y3
  106. Sparking Tubes!
  107. Transformer End Bells
  108. DHT Ultrapath Linestage schematic help
  109. Who manufactured are these EL34's?
  110. Tubes and RoHS compliance?
  111. What do you think about this tube preamp?
  112. What's Ra?
  113. Screen grid resistors
  114. Miller compensation - pros/cons?
  115. G. Kaufman's 6GV8/ECL85 regulated psu
  116. 6CA4/EZ81 heater bias
  117. First stab with PSD for 6CK4 amp-what have I got here?
  118. 81 Rectifier
  119. using 40 VDC supply?
  120. Choke current
  121. Why two diodes per branch on a full wave rectifier?
  122. Alps attenuators
  123. Seeking quality PP pre/mono power project (long)
  124. Transformer location
  125. proper choke placement
  126. 6HE5 as output pentode?
  127. A possible good source for steel chassis
  128. Update on DIY 7591 PP bias cap issue!
  129. 832, can you go SE with these?
  130. PX25 SE without NFB
  131. Change my 8417's Quicksilvers to this?
  132. SE EL84 circuit for bi-amp setup?
  133. CLCLC PSU for 6P14P-EV PP
  134. Shielding a Power Tranny
  135. Unison Research Schema Needed
  136. My 2A3 schematic, comments please.
  137. What happend to the PHOTO GALLERY ?
  138. Valve pre-amp maintenance and purchase
  139. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  140. TPAD Devices Kit
  141. Need Help. Anyone with Philips AG 9016??
  142. Question about input sensitivity?
  143. Any help on sth probably simple?
  144. few questions about my amp, pls come in
  145. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  146. Need regulated solid state PSU
  147. EC31 - Any Datasheet...?
  148. comments on www.shinrock.com???
  149. need schematic reading help
  150. Sound from dummy load?
  151. Loftin-White
  152. RCA 151 'scope
  153. Coupling cap. values???
  154. stepped attenuator
  155. Ideas for input/driver stage of 300B amp
  156. Schematics for Bogen MXM-A Mixer?
  157. yet another which cap is best for the money question
  158. Lowering the value of the lead resistor
  159. power supply recommendation for EL84 amp
  160. Can ECC40 be used in a phono stage?
  161. Better current source than LM317 on a 12B4 line amp
  162. Bias and max current for my 7591 AB amp...
  163. Making sense of the Aikido calculations?
  164. Computer Grade Capacitors
  165. Pls recommend a power amp to build?
  166. Advice about this 45 amp
  167. Any definitive infor on R-C parafeed out there?
  168. 6AS7 as rectifier tube?
  169. Pre Amps
  170. 12 volt preamp
  171. JE LAB's 2001 2A3 & Preamp???
  172. 12AX7WA
  173. found DIY amp - now what?
  174. Magic Eye spectrum analyzer
  175. Tube Companies
  176. B+ from GZ34 Heater CT ?
  177. Unknown mA on Gardners mains transformer
  178. PSU Question
  179. how to mount rca jacks and volume control in wood enclosure?
  180. Freaky Whistle in Guitar Amp
  181. Giaime's last nightmare - aka RIAA faceoff
  182. 5687 dc 5687 tube amp need help
  183. Input cap needed
  184. 6BQ5\EL84 line amp
  185. Capacitor Values Why so high? & What can I do?
  186. Bias pot question
  187. What I have: 4 Tubes. What I need...
  188. let me fix this bias
  189. A small no-fuss pentode/pentode SE amp
  190. Bleeder Resistor Placement
  191. Modifying Heathkit AA 151
  192. Interstage transformer for PI.
  193. Motorrun caps ... GND side?
  194. mono center channel out to stereo
  195. Audio Research REF 2 MkII
  196. 717a plate volts
  197. valve preamp criticisms?
  198. LOT of tubes. what can I do?
  199. substitution for 7355
  200. KT88 heaters
  201. Software for drawing tube schematics?
  202. Guitar Amp HUUUM with an MP3! Reverb Problem
  203. New books posted
  204. Compound bias
  205. Tube Oscillation or Microphonic Question
  206. WTB:OT for el 34 35 watt tube amplifier
  207. Questions on 6H30 simple PF?
  208. "Super Davohm" 1w .1% wirewound
  209. Heathkit AA-100
  210. 6159 for SE Power amp
  211. Do SMPS have a home at high end audio?
  212. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  213. cathode capacitance on anode follower
  214. looking for a building shematic for ECLL800
  215. Iron learning.
  216. Tube Amp - Crackling Sound on Left Channel
  217. Pspice preamp simulation
  218. Supply voltage for 12v6 12B4 heaters
  219. Studio Tube Preamp
  220. New project and my first circuit...
  221. Champ clone fried my soundcard
  222. Choke coupled phase invertor
  223. long cable line drive
  224. What To Do?
  225. Simple Method To Measure Source Resistance?
  226. is this true????
  227. query on the PSU of a preamp
  228. Meshplate Help needed
  229. 6072 tube preamplifier.
  230. hybrid rectifiers and PIV rating
  231. transformerless amp help plz ...
  232. Help me build a tube MIC preamp plz
  233. chinese 845 amp blowing fuses
  234. Question about PIV rating of diodes...
  235. Triode strapped heptode?
  236. The Fisher 500C/800C Challenge (long..dialup warning)
  237. 5 wire output transformer
  238. Orcad & tube library
  239. Wall Wart Tube Power
  240. How can I lower B+ of power supply?
  241. How do you put a CCS under a diff. pair of DHTs???
  242. Just need to make sure.
  243. restoring a marantz 7c
  244. Who sells a tube bass guitar amp kit??
  245. What is Simplest and Best 6L6 PP circuit? (PK)
  246. Good DIY Transformer Article (in Thai)
  247. Tube Swapping Question
  248. Toroid choke question
  249. Pentode CCS for parafeed SEP??
  250. subminiature tube suggestion

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