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  1. Transformer location
  2. proper choke placement
  3. 6HE5 as output pentode?
  4. A possible good source for steel chassis
  5. Update on DIY 7591 PP bias cap issue!
  6. 832, can you go SE with these?
  7. PX25 SE without NFB
  8. Change my 8417's Quicksilvers to this?
  9. SE EL84 circuit for bi-amp setup?
  10. CLCLC PSU for 6P14P-EV PP
  11. Shielding a Power Tranny
  12. Unison Research Schema Needed
  13. My 2A3 schematic, comments please.
  14. What happend to the PHOTO GALLERY ?
  15. Valve pre-amp maintenance and purchase
  16. sound of 45 v. 205d v. 2a3 v. 300b for headphones
  17. TPAD Devices Kit
  18. Need Help. Anyone with Philips AG 9016??
  19. Question about input sensitivity?
  20. Any help on sth probably simple?
  21. few questions about my amp, pls come in
  22. 7591 Spice Model ?...Anyone ?... I'm Groveling Over Here !
  23. Need regulated solid state PSU
  24. EC31 - Any Datasheet...?
  25. comments on www.shinrock.com???
  26. need schematic reading help
  27. Sound from dummy load?
  28. Loftin-White
  29. RCA 151 'scope
  30. Coupling cap. values???
  31. stepped attenuator
  32. Ideas for input/driver stage of 300B amp
  33. Schematics for Bogen MXM-A Mixer?
  34. yet another which cap is best for the money question
  35. Lowering the value of the lead resistor
  36. power supply recommendation for EL84 amp
  37. Can ECC40 be used in a phono stage?
  38. Better current source than LM317 on a 12B4 line amp
  39. Bias and max current for my 7591 AB amp...
  40. Making sense of the Aikido calculations?
  41. Computer Grade Capacitors
  42. Pls recommend a power amp to build?
  43. Advice about this 45 amp
  44. Any definitive infor on R-C parafeed out there?
  45. 6AS7 as rectifier tube?
  46. Pre Amps
  47. 12 volt preamp
  48. JE LAB's 2001 2A3 & Preamp???
  49. 12AX7WA
  50. found DIY amp - now what?
  51. Magic Eye spectrum analyzer
  52. Tube Companies
  53. B+ from GZ34 Heater CT ?
  54. Unknown mA on Gardners mains transformer
  55. PSU Question
  56. how to mount rca jacks and volume control in wood enclosure?
  57. Giaime's last nightmare - aka RIAA faceoff
  58. 5687 dc 5687 tube amp need help
  59. Input cap needed
  60. 6BQ5\EL84 line amp
  61. Capacitor Values Why so high? & What can I do?
  62. Bias pot question
  63. What I have: 4 Tubes. What I need...
  64. let me fix this bias
  65. A small no-fuss pentode/pentode SE amp
  66. Bleeder Resistor Placement
  67. Modifying Heathkit AA 151
  68. Interstage transformer for PI.
  69. mono center channel out to stereo
  70. Audio Research REF 2 MkII
  71. 717a plate volts
  72. valve preamp criticisms?
  73. LOT of tubes. what can I do?
  74. substitution for 7355
  75. KT88 heaters
  76. Software for drawing tube schematics?
  77. New books posted
  78. Compound bias
  79. Tube Oscillation or Microphonic Question
  80. WTB:OT for el 34 35 watt tube amplifier
  81. Questions on 6H30 simple PF?
  82. "Super Davohm" 1w .1% wirewound
  83. Heathkit AA-100
  84. 6159 for SE Power amp
  85. Do SMPS have a home at high end audio?
  86. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  87. cathode capacitance on anode follower
  88. looking for a building shematic for ECLL800
  89. Iron learning.
  90. Tube Amp - Crackling Sound on Left Channel
  91. Pspice preamp simulation
  92. Supply voltage for 12v6 12B4 heaters
  93. New project and my first circuit...
  94. Choke coupled phase invertor
  95. long cable line drive
  96. What To Do?
  97. Simple Method To Measure Source Resistance?
  98. is this true????
  99. query on the PSU of a preamp
  100. Meshplate Help needed
  101. 6072 tube preamplifier.
  102. hybrid rectifiers and PIV rating
  103. transformerless amp help plz ...
  104. Help me build a tube MIC preamp plz
  105. chinese 845 amp blowing fuses
  106. Question about PIV rating of diodes...
  107. Triode strapped heptode?
  108. The Fisher 500C/800C Challenge (long..dialup warning)
  109. 5 wire output transformer
  110. Orcad & tube library
  111. Wall Wart Tube Power
  112. How can I lower B+ of power supply?
  113. How do you put a CCS under a diff. pair of DHTs???
  114. Just need to make sure.
  115. restoring a marantz 7c
  116. What is Simplest and Best 6L6 PP circuit? (PK)
  117. Good DIY Transformer Article (in Thai)
  118. Tube Swapping Question
  119. Toroid choke question
  120. Pentode CCS for parafeed SEP??
  121. subminiature tube suggestion
  122. MQ431 or Triode's DynaClone
  123. Conrad Johnson MV 45 schematic help
  124. signal wiring
  125. NEW B Need Help on Output Tx Problem
  126. center tap of heater winding
  127. Dynaco Mk IV question
  128. Does this tube amp has enough cap
  129. Acrosound TO-330 output transformers
  130. PP transformer for SE use
  131. Holiday Time!
  132. another beginers first amp thread!
  133. Western Electric 374A
  134. Musen to Jikken 03/1997
  135. Please help me make a schematic
  136. Tips for Hakko 936-12
  137. AC or DC for 300b Heaters
  138. Two irons for PSU
  139. Which DHT for Line stage?
  140. Pye Mozart 10 amplifier
  141. I need a simple schematic with 6J1P tubes
  142. First tube project. Need advice.
  143. Sound Valves M-40 assistance
  144. Has anyone been keeping up on the 'New Sensor' Controversy?
  145. quad esl output transformer.
  146. penta labs?
  147. transformer links
  148. EL84 auto split
  149. TOPWARD MODEL 605 operation manual & Schematic
  150. PREdator, Diff/CF linestage.
  151. Triode Electronics ??
  152. Full Bridge Amp?
  153. Tube literature on pentodes + transformers
  154. so, who made General Motor's "AUTRONIC EYE" tubes?
  155. 6DJ8 Linestage
  156. Annyone seen this problem?
  157. psu to heater on 4 el34 tubes???
  158. 6C33C-B, Reliability--A theory........
  159. Sun Audio preamps
  160. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  161. Carver Phono
  162. Help With 3 Channel Magnavox
  163. simulation software
  164. trickle charge psu?
  165. tube filter
  166. Holiday S-5 K-12G
  167. Couple of (newbie) tube questions...
  168. valve buffer gainclone
  169. Series wiring for heaters
  170. DIY tube cd player ?
  171. Tubes in mp3 players?
  172. Output Impedance?
  173. Hum Pot Question
  174. Which 6AQ5
  175. White flakes in rectifier tube??
  176. Bogen V20 PA Amp Schematic or ?
  177. 12a?7 in Eico HF-12
  178. Home Made Tubes?? has anyone made one, is it possible??
  179. replace 6N1P with 7308
  180. Plate choke on a line stage?
  181. Looking for datasheet
  182. 811A SET Monoblock physical layout suggestions
  183. Automated bias
  184. OTL or parafeed?
  185. Reversing mains toroids for HT
  186. 5881/6L6WGC and 12AT7WA replacement
  187. Direction for Mounting Transformers
  188. Ecf80
  189. feedback phasing
  190. Cryotubes? Cryogenically Frozen valves
  191. European Triode Festival 2005
  192. PSU capacitors
  193. Question on shared rectifier / signal tube filament windings
  194. Heathkit rebuild or...?
  195. Fisher 500B OPT/Feedback Questions
  196. Transformer selection question
  197. Grounded Grid Help
  198. EF86 penthode
  199. Any audio use for ER21A?
  200. Upgrading a sonic frontiers SFS-80
  201. Hum problem
  202. low frequency oscillation in 12B4 linestage
  203. Balanced volume control question
  204. Need Help for Power Supply for gg Preamp
  205. OTL 6c33c Ciufolli v8.2 low voltage rails
  206. Any way to extend OPT low-frequency response?
  207. RCA Phono Stage Redux
  208. About tube codes
  209. More Joules? Tube or Solid State PSU?
  210. EL34 schematic confusion
  211. 2-stage DHT: high-mu vs. interstage stepup
  212. Understanding this power supply
  213. 6V6G recommended schematic
  214. parallel CRC Filtering for B+
  215. 6v6. 6lg Gain Max Voltage
  216. More buffer questions
  217. Benchtop PS
  218. Chassis labels
  219. LM317 Regulator Problem
  220. Can I afford my SE amp ??
  221. 12B4 versus 6S4 for linestage
  222. Function Generator Probe?
  223. Otl Set?
  224. Tektronix TDS2000 series is a noisy scope
  225. vanderveen's 30W PP amp..
  226. Roberts/Akai M series amp problems
  227. What speaker to use with my tube clone
  228. What’s the best tube amplifier you can build?
  229. Cathode Follower Buffer Input Impedance
  230. EL84 as Preamp and as Crossover
  231. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  232. EL 84 Single Ended Integrated
  233. "2 Stage" PP 7591 Amp
  234. Jolida 1301a with Mission M71 speakers?
  235. EL34 SE in 430V?
  236. EL 84 PPP/PP Class A Triode schematic
  237. Almarro A318A
  238. beckman berkley model 7360
  239. spice model for UL output transformer?
  240. Need help with my new amp
  241. E88CC Mullard fake
  242. Anyone try sharp cutoff pentodes in a p-p output stage?
  243. 845 A2 Monoblock Project
  244. newb needs help on simple el84 amp PS
  245. Newbie's power supply woes
  246. Question about M7 Preamp
  247. Which amp to DIY as a first project?
  248. help for psu
  249. tube amp
  250. Will a 6BH6 work in an Aikido?

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