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  1. Sound from dummy load?
  2. Loftin-White
  3. RCA 151 'scope
  4. Coupling cap. values???
  5. stepped attenuator
  6. Ideas for input/driver stage of 300B amp
  7. Schematics for Bogen MXM-A Mixer?
  8. yet another which cap is best for the money question
  9. Lowering the value of the lead resistor
  10. power supply recommendation for EL84 amp
  11. Can ECC40 be used in a phono stage?
  12. Better current source than LM317 on a 12B4 line amp
  13. Bias and max current for my 7591 AB amp...
  14. Making sense of the Aikido calculations?
  15. Computer Grade Capacitors
  16. Pls recommend a power amp to build?
  17. Advice about this 45 amp
  18. Any definitive infor on R-C parafeed out there?
  19. 6AS7 as rectifier tube?
  20. Pre Amps
  21. 12 volt preamp
  22. JE LAB's 2001 2A3 & Preamp???
  23. 12AX7WA
  24. found DIY amp - now what?
  25. Magic Eye spectrum analyzer
  26. Tube Companies
  27. B+ from GZ34 Heater CT ?
  28. Unknown mA on Gardners mains transformer
  29. PSU Question
  30. how to mount rca jacks and volume control in wood enclosure?
  31. Giaime's last nightmare - aka RIAA faceoff
  32. 5687 dc 5687 tube amp need help
  33. Input cap needed
  34. 6BQ5\EL84 line amp
  35. Capacitor Values Why so high? & What can I do?
  36. Bias pot question
  37. What I have: 4 Tubes. What I need...
  38. let me fix this bias
  39. A small no-fuss pentode/pentode SE amp
  40. Bleeder Resistor Placement
  41. Modifying Heathkit AA 151
  42. Interstage transformer for PI.
  43. mono center channel out to stereo
  44. Audio Research REF 2 MkII
  45. 717a plate volts
  46. valve preamp criticisms?
  47. LOT of tubes. what can I do?
  48. substitution for 7355
  49. KT88 heaters
  50. Software for drawing tube schematics?
  51. New books posted
  52. Compound bias
  53. Tube Oscillation or Microphonic Question
  54. WTB:OT for el 34 35 watt tube amplifier
  55. Questions on 6H30 simple PF?
  56. "Super Davohm" 1w .1% wirewound
  57. Heathkit AA-100
  58. 6159 for SE Power amp
  59. Do SMPS have a home at high end audio?
  60. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  61. cathode capacitance on anode follower
  62. looking for a building shematic for ECLL800
  63. Iron learning.
  64. Tube Amp - Crackling Sound on Left Channel
  65. Pspice preamp simulation
  66. Supply voltage for 12v6 12B4 heaters
  67. New project and my first circuit...
  68. Choke coupled phase invertor
  69. long cable line drive
  70. What To Do?
  71. Simple Method To Measure Source Resistance?
  72. is this true????
  73. query on the PSU of a preamp
  74. Meshplate Help needed
  75. 6072 tube preamplifier.
  76. hybrid rectifiers and PIV rating
  77. transformerless amp help plz ...
  78. Help me build a tube MIC preamp plz
  79. chinese 845 amp blowing fuses
  80. Question about PIV rating of diodes...
  81. Triode strapped heptode?
  82. The Fisher 500C/800C Challenge (long..dialup warning)
  83. 5 wire output transformer
  84. Orcad & tube library
  85. Wall Wart Tube Power
  86. How can I lower B+ of power supply?
  87. How do you put a CCS under a diff. pair of DHTs???
  88. Just need to make sure.
  89. restoring a marantz 7c
  90. What is Simplest and Best 6L6 PP circuit? (PK)
  91. Good DIY Transformer Article (in Thai)
  92. Tube Swapping Question
  93. Toroid choke question
  94. Pentode CCS for parafeed SEP??
  95. subminiature tube suggestion
  96. MQ431 or Triode's DynaClone
  97. Conrad Johnson MV 45 schematic help
  98. signal wiring
  99. NEW B Need Help on Output Tx Problem
  100. center tap of heater winding
  101. Dynaco Mk IV question
  102. Does this tube amp has enough cap
  103. Acrosound TO-330 output transformers
  104. PP transformer for SE use
  105. Holiday Time!
  106. another beginers first amp thread!
  107. Western Electric 374A
  108. Musen to Jikken 03/1997
  109. Please help me make a schematic
  110. Tips for Hakko 936-12
  111. AC or DC for 300b Heaters
  112. Two irons for PSU
  113. Which DHT for Line stage?
  114. Pye Mozart 10 amplifier
  115. I need a simple schematic with 6J1P tubes
  116. First tube project. Need advice.
  117. Sound Valves M-40 assistance
  118. Has anyone been keeping up on the 'New Sensor' Controversy?
  119. quad esl output transformer.
  120. penta labs?
  121. transformer links
  122. EL84 auto split
  123. TOPWARD MODEL 605 operation manual & Schematic
  124. PREdator, Diff/CF linestage.
  125. Triode Electronics ??
  126. Full Bridge Amp?
  127. Tube literature on pentodes + transformers
  128. so, who made General Motor's "AUTRONIC EYE" tubes?
  129. 6DJ8 Linestage
  130. Annyone seen this problem?
  131. psu to heater on 4 el34 tubes???
  132. 6C33C-B, Reliability--A theory........
  133. Sun Audio preamps
  134. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  135. Carver Phono
  136. Help With 3 Channel Magnavox
  137. simulation software
  138. trickle charge psu?
  139. tube filter
  140. Holiday S-5 K-12G
  141. Couple of (newbie) tube questions...
  142. valve buffer gainclone
  143. Series wiring for heaters
  144. DIY tube cd player ?
  145. Tubes in mp3 players?
  146. Output Impedance?
  147. Hum Pot Question
  148. Which 6AQ5
  149. White flakes in rectifier tube??
  150. Bogen V20 PA Amp Schematic or ?
  151. 12a?7 in Eico HF-12
  152. Home Made Tubes?? has anyone made one, is it possible??
  153. replace 6N1P with 7308
  154. Plate choke on a line stage?
  155. Looking for datasheet
  156. 811A SET Monoblock physical layout suggestions
  157. Automated bias
  158. OTL or parafeed?
  159. Reversing mains toroids for HT
  160. 5881/6L6WGC and 12AT7WA replacement
  161. Direction for Mounting Transformers
  162. Ecf80
  163. feedback phasing
  164. Cryotubes? Cryogenically Frozen valves
  165. European Triode Festival 2005
  166. PSU capacitors
  167. Question on shared rectifier / signal tube filament windings
  168. Heathkit rebuild or...?
  169. Fisher 500B OPT/Feedback Questions
  170. Transformer selection question
  171. Grounded Grid Help
  172. EF86 penthode
  173. Any audio use for ER21A?
  174. Upgrading a sonic frontiers SFS-80
  175. Hum problem
  176. low frequency oscillation in 12B4 linestage
  177. Balanced volume control question
  178. Need Help for Power Supply for gg Preamp
  179. OTL 6c33c Ciufolli v8.2 low voltage rails
  180. Any way to extend OPT low-frequency response?
  181. RCA Phono Stage Redux
  182. About tube codes
  183. More Joules? Tube or Solid State PSU?
  184. EL34 schematic confusion
  185. 2-stage DHT: high-mu vs. interstage stepup
  186. Understanding this power supply
  187. 6V6G recommended schematic
  188. parallel CRC Filtering for B+
  189. 6v6. 6lg Gain Max Voltage
  190. More buffer questions
  191. Benchtop PS
  192. Chassis labels
  193. LM317 Regulator Problem
  194. Can I afford my SE amp ??
  195. 12B4 versus 6S4 for linestage
  196. Function Generator Probe?
  197. Otl Set?
  198. Tektronix TDS2000 series is a noisy scope
  199. vanderveen's 30W PP amp..
  200. Roberts/Akai M series amp problems
  201. What speaker to use with my tube clone
  202. What’s the best tube amplifier you can build?
  203. Cathode Follower Buffer Input Impedance
  204. EL84 as Preamp and as Crossover
  205. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  206. EL 84 Single Ended Integrated
  207. "2 Stage" PP 7591 Amp
  208. Jolida 1301a with Mission M71 speakers?
  209. EL34 SE in 430V?
  210. EL 84 PPP/PP Class A Triode schematic
  211. Almarro A318A
  212. beckman berkley model 7360
  213. spice model for UL output transformer?
  214. Need help with my new amp
  215. E88CC Mullard fake
  216. Anyone try sharp cutoff pentodes in a p-p output stage?
  217. 845 A2 Monoblock Project
  218. newb needs help on simple el84 amp PS
  219. Newbie's power supply woes
  220. Question about M7 Preamp
  221. Which amp to DIY as a first project?
  222. help for psu
  223. tube amp
  224. Will a 6BH6 work in an Aikido?
  225. Tubes and maximum ratings
  226. FireFly Amp Question
  227. help needed 1st tube diy
  228. Help for newbie building Toccata preamp
  229. Hybrid amp -> tube for VAS stage
  230. I recently inherited a Heathkit HO-10 monitor o-scope...
  231. Aikido tube choice
  232. Biasing pre-amp problem
  233. Help with identifying tube
  234. Off Topic Holiday Cheer
  235. Prototype preamp example
  236. PV10AL Transformer burned, help!
  237. EL34 Pentode in Push-Pull!
  238. Mcintosh MX110 repair
  239. Mains Transformer Question
  240. Loaded Question
  241. A BIG SCRATCH in my speakers? Help me please.
  242. New Production Tung Sol 6550 Tubes - Opinions
  243. Looking to build a tube integrated
  244. Which high power CCS for output stage?
  245. Using a mosfet to drop B+?
  246. drawings vs. schematics
  247. New TEK Scopes
  248. Transfos Anyone?
  249. Ripple guidelines for power supplies
  250. Mains transformer orientation

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