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  1. Edcor OPT in S5 Electronics K-16LS kit?
  2. SRPP Powersupply, replace R with choke ?
  3. First tube amp
  4. Best low-signal direct heated triodes?
  5. 25-position switched attenuator using a pair of 5-position switches?
  6. Help with dead Jadis Defy7 Amp
  7. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  8. Remote control for integrated tube amp
  9. EL34 pp "fixed" bias is wandering
  10. US sources Russian Surplus
  11. Convert RCA tuner/pre to high perf AM only
  12. Metal Can 6CA7s
  13. Bypassing B+ in PP amp
  14. Tube shunt regulator for phono amp
  15. speaker that can be driven by tube amp
  16. Need help with volume control.
  17. Flame triodes!
  18. make OPT
  19. Tube GU50 made in Russia
  20. Expectations of new tube specs
  21. DC on preamp input
  22. We're up and going!
  23. Putting serial number on tubes
  24. Which of these tubes is best?
  25. Stepped attenuator resistor calculation software
  26. Help with PSU for tube DAC output stage
  27. single-tube (6GN8) amplifier?
  28. Dukane schematic needed
  29. Bloody pinouts!
  30. Testing 5651WA on the bench
  31. phase splitter concerns ?
  32. phono pre RIAA 2001
  33. Quick output transformer wiring question
  34. Can I.....
  35. Cathode FB P.P. Strange behaviour.
  36. Historic Valve Assembly Vids Mullard Content
  37. Unknown output impedance
  38. Any matching in 12AT7 sections? (SimpleSE)
  39. Over-voltage on heaters...
  40. Stray capacitance of CCS
  41. CCS Design for DHT Filaments
  42. coupling cap value help for tubelabSE
  43. YAQIN MC-10L to Klipsch B-3 Speakers
  44. Sonic effects of tubes
  45. Gubin Valve Stereo Amplifier Question
  46. 6J5 Shootout - which one's best?
  47. Chinese Tube Amps?
  48. 26 DHT users please comment on what you built & use.
  49. auricap Vs musicap (Another Cap Question)
  50. Help with splitter design for 7591 PP
  51. Tron Seven
  52. blue glow on one channel
  53. Suitable Power Trans for 6gw8/6bm8/el84
  54. Dynaco Pas 3 Hiss from HV regulator
  55. PS Problem: How do I Reduce Voltage?
  56. Got the build itch again. 80w kt88
  57. lm317 CCS question
  58. LM334z
  59. Parafeeding a Tetrode
  60. Differential stage biasing choice
  61. Got an overshoot problem.
  62. Help! What could possibly be wrong?
  63. Noise - 6J5 - 71a -300B amp
  64. crude, simple and powerful PP-amplifier
  65. What's the appeal of type 80 rectifiers?
  66. 6N7 PP amplifier
  67. 300 KW tube audio amplifire-modulator
  68. Weird amp on ebay
  69. which type of rubber cushion under transformers?
  70. 12at7 LTP CCS
  71. Which value of a potentiometer
  72. Strange circuit - heater hum opt feedback?
  73. Aikido question
  74. Copland CTA-402 Phono Section Comments
  75. modified sine wave power inverter
  76. Rebiasing my DSL-100
  77. My EL84 SE
  78. K-16LS kit Assembled and Working
  79. Claus Byrith 30W PP
  80. Aikido pre and class T amplifier ...for a newby
  81. Best replacement for Black Gate WKZ?
  82. DIY Jukebox!!
  83. Partial feedback confusion
  84. Anyone used the 7C7 loktal pentode?
  85. Is vacuumtubes.net still in business?
  86. Rectifier Tubes
  87. music angel kt88 tube amp schmetic needed
  88. Next project suggestions
  89. Unpotted Peerless 16309 OPT from Heath W5m
  90. 6au6 Cf
  91. Direct-Coupling Question
  92. Help on CCS PP differential driver stage for SE 845 amp
  93. I'm Looking for this Similar Schematic !
  94. ECL86 preamp critique please
  95. Low cost 6AV5 design questions (long)
  96. Got my tube spice models, and tubed CD player page back on the air
  97. Vsac 2008?
  98. How hot do Hammond chokes get?
  99. Transformer current question
  100. WTD: Reviewer/Writer For DIY Articles
  101. photomultiplier tube - what is this???
  102. fun idea: cameras and tubes!
  103. Quicksilver
  104. EI-75 End Bells
  105. Svetlana vs. Winged C
  106. Tube Amp Links
  107. McMartin MA-20 mods
  108. Power-tube grid-leak bias
  109. Best/favorite CF NOS noval twin triode?
  110. How can I calculate voltage over cathode resistor?
  111. Grid bias with Class A SE ?
  112. QUADII with DHT
  113. My First Tube Amp
  114. RH84 vs Magnavox SE?
  115. Rectifier and amp heaters on one supply?
  116. OPT impedance vs. speaker
  117. Power Supply help
  118. Problem with Stealth clone (12A6)
  119. phono stage hiss
  120. Lafayette LT-100 and 6AQ8 tubes
  121. Input potentiometer selection
  122. VSAC 2008 Amp Class
  123. Searching for simple 12bh7/E80cc pre schematic
  124. filament AC vs DC
  125. Novice PS Question: Diode Dilemma
  126. Custom Power Transformer Supplier UK ?
  127. lowering AC heater voltage help?
  128. 60 hz hum, what causes those?
  129. Problem with my ST70 build
  130. S-5 16LS tube amp use with 8 ohm speakers
  131. Yaqin 300b
  132. I'm going in.....
  133. noisy rectifier tube
  134. Quad II Output transformer rewinding question
  135. screen-drive (g2 driven) plate curves spacing linear!
  136. Strange feedback method
  137. Trio W-45a Amp-
  138. Hammond Power Transformer Buzz...
  139. Tube DI Help, Please: Substitutions
  140. Harmon Kardon Galaxy BA-150
  141. Velleman K8010 monoblock tube amplifiers
  142. My 6S19P Linestage
  143. EL34 recommendations
  144. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  145. Bypass 2x0B3 tube cap value ?
  146. EF80 vs EF86
  147. Decware MODEL SE84C-DIY
  148. ST35 voltages WAY too high!
  149. How Do "Heat Fins" Work In a Vacuum?
  150. Acrosound Ultra-Linear OT catalog
  151. Simple Questions: Diodes and Heaters
  152. Recommend an input stage triode please
  153. Copper patinization?
  154. V-m 560a
  155. Anybody dealt with high-endstore.com?
  156. Diodes On Rectifier Question
  157. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  158. looking for a website...
  159. Simple 45/2A3 schematic error?
  160. Plate load for push-pull
  161. Hybrid regulator
  162. Hybrid Graetz Bridge
  163. My first amplifier - 6n3c-E
  164. Power supply problem
  165. Grid choke as I/V?
  166. Hammond PR20
  167. 6JN6 screen-drive (g2 driven) plate curves?
  168. Another compactron PP output
  169. 6922 transformer coupled
  170. Beam Deflection Tube Limiter
  171. 6LW6 bias points
  172. Dynaco SCA-35 or Sherwood S5000 iV
  173. EL821 / 6CH6 triode curves?
  174. Ground wire adds hum to Harmony H-400A AC/DC amp
  175. "magic" phase splitter for SimpleP-P
  176. Harmon Kardon tube amp kit testing
  177. Did I hurt this capacitor?
  178. (newb) Why no white (-) leads on power trafo
  179. Ruined transformer?
  180. My Tabor Clone is finished.
  181. first build 6em7 and it works
  182. Cleaning up baked enamel/painted finishes
  183. Highs roll off
  184. scratch build EAR834p
  185. El156se
  186. One more hybrid idea
  187. Can Anyone figure this?
  188. "Mighty Mite" Single Ended Amplifier
  189. old question - lost answer 6AS7 SE amp
  190. My KT88 SE project
  191. Motorola OPT
  192. Weird Input transformer hum.
  193. cascode vs asymmetrical cathode coupled
  194. music angel 845 SET
  195. Help! My amp stopped singing...
  196. LTP CCS IXYS with 10m45s opinions
  197. Boozhound Choke Tail Pair for HiFi
  198. 5718 subminiture tube?
  199. fixed bias for push pull tube amps
  200. EC86 and phono
  201. Power Transformer mystery lead....
  202. Bias measurements 6L6
  203. 0A3 Light
  204. Equivalent to Tango NC-10 IT
  205. Ammeter wiring?
  206. Highest Practical Primary Z in OPT?
  207. Ampex 6v6 PP Modifications
  208. Variability of RIAA eq with tube characteristics?
  209. 807/350B/6L6 PP amps PSU ?
  210. Need Help For Tube Amp
  211. ECC83 300B Loftin White amp
  212. Hashimoto and the wonderful 45
  213. Heathkit variac
  214. E80L pentode mode as driver?
  215. Transformer repair
  216. How many ga for chassis wire?
  217. I want to MOD - help?
  218. What About Beam Deflection Tubes?
  219. Placement of Ultralinear Tap On Homemade Transformer
  220. Differential stage with CCS in cathode
  221. Directly heated Cathode/insulation question
  222. "Dirt Cheap SE" 6BM8 spud amp
  223. Single-end Power amp with tubes
  224. Input pot question
  225. Need help putting 6Z4 into PSU Designer
  226. SimpleSE Under Chassis Mounting
  227. Bias methods?
  228. Aikido and SE KT88
  229. Built this pre amp today!
  230. Mystery tube in a Fisher FM-90X - V50,064
  231. Switch contacts for HV supply
  232. The First Sound Recording - we can hear it finally
  233. RCA made in Japan???????
  234. 6V6GT in the SimpleSE
  235. trimmings for amp project
  236. Tube Preamp Hybrid new builder, lots of question!
  237. Chinese mini bias pots
  238. GU-50, GM70 and KT88
  239. Please recommend me an amplifier design.
  240. Single-ended OR push-pull?
  241. Darling in Europe... (110 vs. 220)
  242. DC heater (+/-) -> elevated?
  243. Yaqin MS-300B SET amp
  244. Sonics of a "dynamic coupled" driver
  245. ELL80
  246. Will this work?
  247. What circuit to build with MQ TL-404
  248. Very low output from Knight KN928 amp
  249. 6GK5 to drive a 6AS7?
  250. Plate Heater Dissipators

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