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

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