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  1. Tubes and RoHS compliance?
  2. What do you think about this tube preamp?
  3. What's Ra?
  4. Screen grid resistors
  5. Miller compensation - pros/cons?
  6. G. Kaufman's 6GV8/ECL85 regulated psu
  7. 6CA4/EZ81 heater bias
  8. First stab with PSD for 6CK4 amp-what have I got here?
  9. 81 Rectifier
  10. using 40 VDC supply?
  11. Choke current
  12. Why two diodes per branch on a full wave rectifier?
  13. Alps attenuators
  14. Seeking quality PP pre/mono power project (long)
  15. Transformer location
  16. proper choke placement
  17. 6HE5 as output pentode?
  18. A possible good source for steel chassis
  19. Update on DIY 7591 PP bias cap issue!
  20. 832, can you go SE with these?
  21. PX25 SE without NFB
  22. Change my 8417's Quicksilvers to this?
  23. SE EL84 circuit for bi-amp setup?
  24. CLCLC PSU for 6P14P-EV PP
  25. Shielding a Power Tranny
  26. Unison Research Schema Needed
  27. My 2A3 schematic, comments please.
  28. What happend to the PHOTO GALLERY ?
  29. Valve pre-amp maintenance and purchase
  30. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  31. TPAD Devices Kit
  32. Need Help. Anyone with Philips AG 9016??
  33. Question about input sensitivity?
  34. Any help on sth probably simple?
  35. few questions about my amp, pls come in
  36. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  37. Need regulated solid state PSU
  38. EC31 - Any Datasheet...?
  39. comments on www.shinrock.com???
  40. need schematic reading help
  41. Sound from dummy load?
  42. Loftin-White
  43. RCA 151 'scope
  44. Coupling cap. values???
  45. stepped attenuator
  46. Ideas for input/driver stage of 300B amp
  47. Schematics for Bogen MXM-A Mixer?
  48. yet another which cap is best for the money question
  49. Lowering the value of the lead resistor
  50. power supply recommendation for EL84 amp
  51. Can ECC40 be used in a phono stage?
  52. Better current source than LM317 on a 12B4 line amp
  53. Bias and max current for my 7591 AB amp...
  54. Making sense of the Aikido calculations?
  55. Computer Grade Capacitors
  56. Pls recommend a power amp to build?
  57. Advice about this 45 amp
  58. Any definitive infor on R-C parafeed out there?
  59. 6AS7 as rectifier tube?
  60. Pre Amps
  61. 12 volt preamp
  62. JE LAB's 2001 2A3 & Preamp???
  63. 12AX7WA
  64. found DIY amp - now what?
  65. Magic Eye spectrum analyzer
  66. Tube Companies
  67. B+ from GZ34 Heater CT ?
  68. Unknown mA on Gardners mains transformer
  69. PSU Question
  70. how to mount rca jacks and volume control in wood enclosure?
  71. Freaky Whistle in Guitar Amp
  72. Giaime's last nightmare - aka RIAA faceoff
  73. 5687 dc 5687 tube amp need help
  74. Input cap needed
  75. 6BQ5\EL84 line amp
  76. Capacitor Values Why so high? & What can I do?
  77. Bias pot question
  78. What I have: 4 Tubes. What I need...
  79. let me fix this bias
  80. A small no-fuss pentode/pentode SE amp
  81. Bleeder Resistor Placement
  82. Modifying Heathkit AA 151
  83. Interstage transformer for PI.
  84. Motorrun caps ... GND side?
  85. mono center channel out to stereo
  86. Audio Research REF 2 MkII
  87. 717a plate volts
  88. valve preamp criticisms?
  89. LOT of tubes. what can I do?
  90. substitution for 7355
  91. KT88 heaters
  92. Software for drawing tube schematics?
  93. Guitar Amp HUUUM with an MP3! Reverb Problem
  94. New books posted
  95. Compound bias
  96. Tube Oscillation or Microphonic Question
  97. WTB:OT for el 34 35 watt tube amplifier
  98. Questions on 6H30 simple PF?
  99. "Super Davohm" 1w .1% wirewound
  100. Heathkit AA-100
  101. 6159 for SE Power amp
  102. Do SMPS have a home at high end audio?
  103. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  104. cathode capacitance on anode follower
  105. looking for a building shematic for ECLL800
  106. Iron learning.
  107. Tube Amp - Crackling Sound on Left Channel
  108. Pspice preamp simulation
  109. Supply voltage for 12v6 12B4 heaters
  110. Studio Tube Preamp
  111. New project and my first circuit...
  112. Champ clone fried my soundcard
  113. Choke coupled phase invertor
  114. long cable line drive
  115. What To Do?
  116. Simple Method To Measure Source Resistance?
  117. is this true????
  118. query on the PSU of a preamp
  119. Meshplate Help needed
  120. 6072 tube preamplifier.
  121. hybrid rectifiers and PIV rating
  122. transformerless amp help plz ...
  123. Help me build a tube MIC preamp plz
  124. chinese 845 amp blowing fuses
  125. Question about PIV rating of diodes...
  126. Triode strapped heptode?
  127. The Fisher 500C/800C Challenge (long..dialup warning)
  128. 5 wire output transformer
  129. Orcad & tube library
  130. Wall Wart Tube Power
  131. How can I lower B+ of power supply?
  132. How do you put a CCS under a diff. pair of DHTs???
  133. Just need to make sure.
  134. restoring a marantz 7c
  135. Who sells a tube bass guitar amp kit??
  136. What is Simplest and Best 6L6 PP circuit? (PK)
  137. Good DIY Transformer Article (in Thai)
  138. Tube Swapping Question
  139. Toroid choke question
  140. Pentode CCS for parafeed SEP??
  141. subminiature tube suggestion
  142. MQ431 or Triode's DynaClone
  143. Conrad Johnson MV 45 schematic help
  144. signal wiring
  145. NEW B Need Help on Output Tx Problem
  146. center tap of heater winding
  147. Dynaco Mk IV question
  148. Does this tube amp has enough cap
  149. Acrosound TO-330 output transformers
  150. PP transformer for SE use
  151. Holiday Time!
  152. another beginers first amp thread!
  153. Western Electric 374A
  154. Musen to Jikken 03/1997
  155. Please help me make a schematic
  156. Tips for Hakko 936-12
  157. AC or DC for 300b Heaters
  158. Two irons for PSU
  159. Which DHT for Line stage?
  160. Pye Mozart 10 amplifier
  161. I need a simple schematic with 6J1P tubes
  162. First tube project. Need advice.
  163. Sound Valves M-40 assistance
  164. Has anyone been keeping up on the 'New Sensor' Controversy?
  165. quad esl output transformer.
  166. penta labs?
  167. New Build (Guitar Amp)
  168. transformer links
  169. EL84 auto split
  170. TOPWARD MODEL 605 operation manual & Schematic
  171. PREdator, Diff/CF linestage.
  172. Triode Electronics ??
  173. Full Bridge Amp?
  174. Tube literature on pentodes + transformers
  175. so, who made General Motor's "AUTRONIC EYE" tubes?
  176. 6DJ8 Linestage
  177. Annyone seen this problem?
  178. psu to heater on 4 el34 tubes???
  179. 6C33C-B, Reliability--A theory........
  180. Sun Audio preamps
  181. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  182. Carver Phono
  183. Help With 3 Channel Magnavox
  184. simulation software
  185. trickle charge psu?
  186. tube filter
  187. Holiday S-5 K-12G
  188. Couple of (newbie) tube questions...
  189. valve buffer gainclone
  190. Series wiring for heaters
  191. DIY tube cd player ?
  192. Tubes in mp3 players?
  193. Output Impedance?
  194. Hum Pot Question
  195. Which 6AQ5
  196. White flakes in rectifier tube??
  197. Bogen V20 PA Amp Schematic or ?
  198. 12a?7 in Eico HF-12
  199. Home Made Tubes?? has anyone made one, is it possible??
  200. replace 6N1P with 7308
  201. Plate choke on a line stage?
  202. Looking for datasheet
  203. 811A SET Monoblock physical layout suggestions
  204. Automated bias
  205. OTL or parafeed?
  206. tubes: Jcm 900 Slx 50watt
  207. Reversing mains toroids for HT
  208. 5881/6L6WGC and 12AT7WA replacement
  209. Direction for Mounting Transformers
  210. Ecf80
  211. feedback phasing
  212. Cryotubes? Cryogenically Frozen valves
  213. European Triode Festival 2005
  214. PSU capacitors
  215. Question on shared rectifier / signal tube filament windings
  216. Heathkit rebuild or...?
  217. Fisher 500B OPT/Feedback Questions
  218. Transformer selection question
  219. Grounded Grid Help
  220. EF86 penthode
  221. Any audio use for ER21A?
  222. Upgrading a sonic frontiers SFS-80
  223. Hum problem
  224. low frequency oscillation in 12B4 linestage
  225. Balanced volume control question
  226. Need Help for Power Supply for gg Preamp
  227. OTL 6c33c Ciufolli v8.2 low voltage rails
  228. Any way to extend OPT low-frequency response?
  229. RCA Phono Stage Redux
  230. About tube codes
  231. More Joules? Tube or Solid State PSU?
  232. EL34 schematic confusion
  233. 2-stage DHT: high-mu vs. interstage stepup
  234. Understanding this power supply
  235. 6V6G recommended schematic
  236. parallel CRC Filtering for B+
  237. 6v6. 6lg Gain Max Voltage
  238. More buffer questions
  239. Benchtop PS
  240. Chassis labels
  241. LM317 Regulator Problem
  242. Can I afford my SE amp ??
  243. 12B4 versus 6S4 for linestage
  244. Function Generator Probe?
  245. Otl Set?
  246. Tektronix TDS2000 series is a noisy scope
  247. vanderveen's 30W PP amp..
  248. Roberts/Akai M series amp problems
  249. What speaker to use with my tube clone
  250. What’s the best tube amplifier you can build?

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