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  1. 6FD7, 6BM8 or other
  2. My OLD Project....... cheap tube audio project!!!
  3. tube noise
  4. Fisher 400 questions
  5. RL12P35 amplifier
  6. 6AS7 ppp
  7. 6j5 dc coupled to 12b4a as 2a3 driver
  8. '81 Twin problems
  9. The sound of different EL34īs.
  10. Output transformer and FB
  11. Triode curves for 6AU5
  12. 26/el-84 amp possible..?
  13. Vaic 52B monos
  14. Hour Meter for a Tube Amp..
  15. volume pot replacement
  16. Ampex 600
  17. Tubing Testing...how are these numbers?
  18. No-R No-C Power Supply
  19. Are my Speakers efficient enough for my Amp?
  20. doesn't sound quite right
  21. 6DJ8 alternates?
  22. Is this the dumbest question?
  23. Fuse between B+ and output transformer?
  24. Telefunken Double Label Error...Ever seen this?
  25. 300B Summer Build Question
  26. 1,25kW tube amplifier/modulator
  27. 12sn7 heater-cathode voltage
  28. Toroidal output transformers with screen drive- why not?
  29. Help With 6v6 Spice Model
  30. Different 5AR4's have different voltages and warm up time.
  31. Edcor OPT in S5 Electronics K-16LS kit?
  32. SRPP Powersupply, replace R with choke ?
  33. First tube amp
  34. Best low-signal direct heated triodes?
  35. 25-position switched attenuator using a pair of 5-position switches?
  36. Help with dead Jadis Defy7 Amp
  37. Bring test points to chassis - Tubelab
  38. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  39. Remote control for integrated tube amp
  40. EL34 pp "fixed" bias is wandering
  41. US sources Russian Surplus
  42. 6550 SE class project (continued)
  43. Convert RCA tuner/pre to high perf AM only
  44. Metal Can 6CA7s
  45. Bypassing B+ in PP amp
  46. Tube shunt regulator for phono amp
  47. Triplett tube tester help
  48. speaker that can be driven by tube amp
  49. Which perf board?
  50. Looking for schematic/info for a Knight KN 3050 PA Amp
  51. Need help with volume control.
  52. Flame triodes!
  53. make OPT
  54. Tube GU50 made in Russia
  55. Expectations of new tube specs
  56. DC on preamp input
  57. We're up and going!
  58. Putting serial number on tubes
  59. Which of these tubes is best?
  60. Stepped attenuator resistor calculation software
  61. Help with PSU for tube DAC output stage
  62. single-tube (6GN8) amplifier?
  63. Dukane schematic needed
  64. Bloody pinouts!
  65. Testing 5651WA on the bench
  66. phase splitter concerns ?
  67. phono pre RIAA 2001
  68. Quick output transformer wiring question
  69. Can I.....
  70. Cathode FB P.P. Strange behaviour.
  71. Historic Valve Assembly Vids Mullard Content
  72. Unknown output impedance
  73. Any matching in 12AT7 sections? (SimpleSE)
  74. Over-voltage on heaters...
  75. Stray capacitance of CCS
  76. CCS Design for DHT Filaments
  77. coupling cap value help for tubelabSE
  78. YAQIN MC-10L to Klipsch B-3 Speakers
  79. Sonic effects of tubes
  80. Gubin Valve Stereo Amplifier Question
  81. 6J5 Shootout - which one's best?
  82. Chinese Tube Amps?
  83. 26 DHT users please comment on what you built & use.
  84. auricap Vs musicap (Another Cap Question)
  85. Help with splitter design for 7591 PP
  86. Tron Seven
  87. blue glow on one channel
  88. Suitable Power Trans for 6gw8/6bm8/el84
  89. Dynaco Pas 3 Hiss from HV regulator
  90. PS Problem: How do I Reduce Voltage?
  91. Got the build itch again. 80w kt88
  92. lm317 CCS question
  93. LM334z
  94. Parafeeding a Tetrode
  95. Differential stage biasing choice
  96. Got an overshoot problem.
  97. Help! What could possibly be wrong?
  98. Noise - 6J5 - 71a -300B amp
  99. crude, simple and powerful PP-amplifier
  100. What's the appeal of type 80 rectifiers?
  101. 6N7 PP amplifier
  102. 300 KW tube audio amplifire-modulator
  103. Weird amp on ebay
  104. which type of rubber cushion under transformers?
  105. 12at7 LTP CCS
  106. Which value of a potentiometer
  107. Strange circuit - heater hum opt feedback?
  108. Aikido question
  109. Tubelab SE diode substitute
  110. Copland CTA-402 Phono Section Comments
  111. modified sine wave power inverter
  112. Rebiasing my DSL-100
  113. My EL84 SE
  114. K-16LS kit Assembled and Working
  115. Claus Byrith 30W PP
  116. Aikido pre and class T amplifier ...for a newby
  117. Best replacement for Black Gate WKZ?
  118. DIY Jukebox!!
  119. Partial feedback confusion
  120. Anyone used the 7C7 loktal pentode?
  121. Is vacuumtubes.net still in business?
  122. Rectifier Tubes
  123. music angel kt88 tube amp schmetic needed
  124. Next project suggestions
  125. Unpotted Peerless 16309 OPT from Heath W5m
  126. 6au6 Cf
  127. Direct-Coupling Question
  128. Help on CCS PP differential driver stage for SE 845 amp
  129. I'm Looking for this Similar Schematic !
  130. ECL86 preamp critique please
  131. Low cost 6AV5 design questions (long)
  132. Got my tube spice models, and tubed CD player page back on the air
  133. Vsac 2008?
  134. How hot do Hammond chokes get?
  135. Transformer current question
  136. TubelabSE - best MOSFET choice?
  137. WTD: Reviewer/Writer For DIY Articles
  138. photomultiplier tube - what is this???
  139. fun idea: cameras and tubes!
  140. Quicksilver
  141. EI-75 End Bells
  142. Svetlana vs. Winged C
  143. Tube Amp Links
  144. McMartin MA-20 mods
  145. Power-tube grid-leak bias
  146. Best/favorite CF NOS noval twin triode?
  147. How can I calculate voltage over cathode resistor?
  148. Grid bias with Class A SE ?
  149. QUADII with DHT
  150. My First Tube Amp
  151. RH84 vs Magnavox SE?
  152. Rectifier and amp heaters on one supply?
  153. OPT impedance vs. speaker
  154. Power Supply help
  155. Problem with Stealth clone (12A6)
  156. phono stage hiss
  157. Lafayette LT-100 and 6AQ8 tubes
  158. Input potentiometer selection
  159. VSAC 2008 Amp Class
  160. Searching for simple 12bh7/E80cc pre schematic
  161. filament AC vs DC
  162. Novice PS Question: Diode Dilemma
  163. Custom Power Transformer Supplier UK ?
  164. lowering AC heater voltage help?
  165. 60 hz hum, what causes those?
  166. Problem with my ST70 build
  167. S-5 16LS tube amp use with 8 ohm speakers
  168. Yaqin 300b
  169. I'm going in.....
  170. noisy rectifier tube
  171. Quad II Output transformer rewinding question
  172. screen-drive (g2 driven) plate curves spacing linear!
  173. Strange feedback method
  174. Trio W-45a Amp-
  175. Hammond Power Transformer Buzz...
  176. Tube DI Help, Please: Substitutions
  177. Harmon Kardon Galaxy BA-150
  178. Velleman K8010 monoblock tube amplifiers
  179. First Project Finished-Tubelab Simple SE
  180. My 6S19P Linestage
  181. EL34 recommendations
  182. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  183. Bypass 2x0B3 tube cap value ?
  184. EF80 vs EF86
  185. Decware MODEL SE84C-DIY
  186. ST35 voltages WAY too high!
  187. How Do "Heat Fins" Work In a Vacuum?
  188. Acrosound Ultra-Linear OT catalog
  189. Simple Questions: Diodes and Heaters
  190. Recommend an input stage triode please
  191. Copper patinization?
  192. V-m 560a
  193. Anybody dealt with high-endstore.com?
  194. Diodes On Rectifier Question
  195. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  196. looking for a website...
  197. Simple 45/2A3 schematic error?
  198. Plate load for push-pull
  199. Hybrid regulator
  200. Hybrid Graetz Bridge
  201. My first amplifier - 6n3c-E
  202. Power supply problem
  203. Grid choke as I/V?
  204. Hammond PR20
  205. 6JN6 screen-drive (g2 driven) plate curves?
  206. Another compactron PP output
  207. 6922 transformer coupled
  208. Beam Deflection Tube Limiter
  209. 6LW6 bias points
  210. Dynaco SCA-35 or Sherwood S5000 iV
  211. SE 6550 class project (continued)
  212. EL821 / 6CH6 triode curves?
  213. Ground wire adds hum to Harmony H-400A AC/DC amp
  214. "magic" phase splitter for SimpleP-P
  215. Harmon Kardon tube amp kit testing
  216. Did I hurt this capacitor?
  217. (newb) Why no white (-) leads on power trafo
  218. Ruined transformer?
  219. My Tabor Clone is finished.
  220. first build 6em7 and it works
  221. Cleaning up baked enamel/painted finishes
  222. Highs roll off
  223. scratch build EAR834p
  224. El156se
  225. One more hybrid idea
  226. Can Anyone figure this?
  227. "Mighty Mite" Single Ended Amplifier
  228. old question - lost answer 6AS7 SE amp
  229. My KT88 SE project
  230. Motorola OPT
  231. Weird Input transformer hum.
  232. cascode vs asymmetrical cathode coupled
  233. music angel 845 SET
  234. Help! My amp stopped singing...
  235. LTP CCS IXYS with 10m45s opinions
  236. Boozhound Choke Tail Pair for HiFi
  237. 5718 subminiture tube?
  238. fixed bias for push pull tube amps
  239. EC86 and phono
  240. Power Transformer mystery lead....
  241. Bias measurements 6L6
  242. 0A3 Light
  243. Equivalent to Tango NC-10 IT
  244. Ammeter wiring?
  245. Highest Practical Primary Z in OPT?
  246. Ampex 6v6 PP Modifications
  247. Variability of RIAA eq with tube characteristics?
  248. 807/350B/6L6 PP amps PSU ?
  249. Need Help For Tube Amp
  250. ECC83 300B Loftin White amp

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