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  1. Different 5AR4's have different voltages and warm up time.
  2. Edcor OPT in S5 Electronics K-16LS kit?
  3. SRPP Powersupply, replace R with choke ?
  4. First tube amp
  5. Best low-signal direct heated triodes?
  6. 25-position switched attenuator using a pair of 5-position switches?
  7. Help with dead Jadis Defy7 Amp
  8. Bring test points to chassis - Tubelab
  9. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  10. Remote control for integrated tube amp
  11. EL34 pp "fixed" bias is wandering
  12. US sources Russian Surplus
  13. 6550 SE class project (continued)
  14. Convert RCA tuner/pre to high perf AM only
  15. Metal Can 6CA7s
  16. Bypassing B+ in PP amp
  17. Tube shunt regulator for phono amp
  18. Triplett tube tester help
  19. speaker that can be driven by tube amp
  20. Which perf board?
  21. Looking for schematic/info for a Knight KN 3050 PA Amp
  22. Need help with volume control.
  23. Flame triodes!
  24. make OPT
  25. Tube GU50 made in Russia
  26. Expectations of new tube specs
  27. DC on preamp input
  28. We're up and going!
  29. Putting serial number on tubes
  30. Which of these tubes is best?
  31. Stepped attenuator resistor calculation software
  32. Help with PSU for tube DAC output stage
  33. single-tube (6GN8) amplifier?
  34. Dukane schematic needed
  35. Bloody pinouts!
  36. Testing 5651WA on the bench
  37. phase splitter concerns ?
  38. phono pre RIAA 2001
  39. Quick output transformer wiring question
  40. Can I.....
  41. Cathode FB P.P. Strange behaviour.
  42. Historic Valve Assembly Vids Mullard Content
  43. Unknown output impedance
  44. Any matching in 12AT7 sections? (SimpleSE)
  45. Over-voltage on heaters...
  46. Stray capacitance of CCS
  47. CCS Design for DHT Filaments
  48. coupling cap value help for tubelabSE
  49. YAQIN MC-10L to Klipsch B-3 Speakers
  50. Sonic effects of tubes
  51. Gubin Valve Stereo Amplifier Question
  52. 6J5 Shootout - which one's best?
  53. Chinese Tube Amps?
  54. 26 DHT users please comment on what you built & use.
  55. auricap Vs musicap (Another Cap Question)
  56. Help with splitter design for 7591 PP
  57. Tron Seven
  58. blue glow on one channel
  59. Suitable Power Trans for 6gw8/6bm8/el84
  60. Dynaco Pas 3 Hiss from HV regulator
  61. PS Problem: How do I Reduce Voltage?
  62. Got the build itch again. 80w kt88
  63. lm317 CCS question
  64. LM334z
  65. Parafeeding a Tetrode
  66. Differential stage biasing choice
  67. Got an overshoot problem.
  68. Help! What could possibly be wrong?
  69. Noise - 6J5 - 71a -300B amp
  70. crude, simple and powerful PP-amplifier
  71. What's the appeal of type 80 rectifiers?
  72. 6N7 PP amplifier
  73. 300 KW tube audio amplifire-modulator
  74. Weird amp on ebay
  75. which type of rubber cushion under transformers?
  76. 12at7 LTP CCS
  77. Which value of a potentiometer
  78. Strange circuit - heater hum opt feedback?
  79. Aikido question
  80. Tubelab SE diode substitute
  81. Copland CTA-402 Phono Section Comments
  82. modified sine wave power inverter
  83. Rebiasing my DSL-100
  84. My EL84 SE
  85. K-16LS kit Assembled and Working
  86. Claus Byrith 30W PP
  87. Aikido pre and class T amplifier ...for a newby
  88. Best replacement for Black Gate WKZ?
  89. DIY Jukebox!!
  90. Partial feedback confusion
  91. Anyone used the 7C7 loktal pentode?
  92. Is vacuumtubes.net still in business?
  93. Rectifier Tubes
  94. music angel kt88 tube amp schmetic needed
  95. Next project suggestions
  96. Unpotted Peerless 16309 OPT from Heath W5m
  97. 6au6 Cf
  98. Direct-Coupling Question
  99. Help on CCS PP differential driver stage for SE 845 amp
  100. I'm Looking for this Similar Schematic !
  101. ECL86 preamp critique please
  102. Low cost 6AV5 design questions (long)
  103. Got my tube spice models, and tubed CD player page back on the air
  104. Vsac 2008?
  105. How hot do Hammond chokes get?
  106. Transformer current question
  107. TubelabSE - best MOSFET choice?
  108. WTD: Reviewer/Writer For DIY Articles
  109. photomultiplier tube - what is this???
  110. fun idea: cameras and tubes!
  111. Quicksilver
  112. EI-75 End Bells
  113. Svetlana vs. Winged C
  114. Tube Amp Links
  115. McMartin MA-20 mods
  116. Power-tube grid-leak bias
  117. Best/favorite CF NOS noval twin triode?
  118. How can I calculate voltage over cathode resistor?
  119. Grid bias with Class A SE ?
  120. QUADII with DHT
  121. My First Tube Amp
  122. RH84 vs Magnavox SE?
  123. Rectifier and amp heaters on one supply?
  124. OPT impedance vs. speaker
  125. Power Supply help
  126. Problem with Stealth clone (12A6)
  127. phono stage hiss
  128. Lafayette LT-100 and 6AQ8 tubes
  129. Input potentiometer selection
  130. VSAC 2008 Amp Class
  131. Searching for simple 12bh7/E80cc pre schematic
  132. filament AC vs DC
  133. Novice PS Question: Diode Dilemma
  134. Custom Power Transformer Supplier UK ?
  135. lowering AC heater voltage help?
  136. 60 hz hum, what causes those?
  137. Problem with my ST70 build
  138. S-5 16LS tube amp use with 8 ohm speakers
  139. Yaqin 300b
  140. I'm going in.....
  141. noisy rectifier tube
  142. Quad II Output transformer rewinding question
  143. screen-drive (g2 driven) plate curves spacing linear!
  144. Strange feedback method
  145. Trio W-45a Amp-
  146. Hammond Power Transformer Buzz...
  147. Tube DI Help, Please: Substitutions
  148. Harmon Kardon Galaxy BA-150
  149. Velleman K8010 monoblock tube amplifiers
  150. First Project Finished-Tubelab Simple SE
  151. My 6S19P Linestage
  152. EL34 recommendations
  153. Edcor CXPP100-MS-5K- anyone used this (or similar 100W) output transformer?
  154. Bypass 2x0B3 tube cap value ?
  155. EF80 vs EF86
  156. Decware MODEL SE84C-DIY
  157. ST35 voltages WAY too high!
  158. How Do "Heat Fins" Work In a Vacuum?
  159. Acrosound Ultra-Linear OT catalog
  160. Simple Questions: Diodes and Heaters
  161. Recommend an input stage triode please
  162. Copper patinization?
  163. V-m 560a
  164. Anybody dealt with high-endstore.com?
  165. Diodes On Rectifier Question
  166. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  167. looking for a website...
  168. Simple 45/2A3 schematic error?
  169. Plate load for push-pull
  170. Hybrid regulator
  171. Hybrid Graetz Bridge
  172. My first amplifier - 6n3c-E
  173. Power supply problem
  174. Grid choke as I/V?
  175. Hammond PR20
  176. 6JN6 screen-drive (g2 driven) plate curves?
  177. Another compactron PP output
  178. 6922 transformer coupled
  179. Beam Deflection Tube Limiter
  180. 6LW6 bias points
  181. Dynaco SCA-35 or Sherwood S5000 iV
  182. SE 6550 class project (continued)
  183. EL821 / 6CH6 triode curves?
  184. Ground wire adds hum to Harmony H-400A AC/DC amp
  185. "magic" phase splitter for SimpleP-P
  186. Harmon Kardon tube amp kit testing
  187. Did I hurt this capacitor?
  188. (newb) Why no white (-) leads on power trafo
  189. Ruined transformer?
  190. My Tabor Clone is finished.
  191. first build 6em7 and it works
  192. Cleaning up baked enamel/painted finishes
  193. Highs roll off
  194. scratch build EAR834p
  195. El156se
  196. One more hybrid idea
  197. Can Anyone figure this?
  198. "Mighty Mite" Single Ended Amplifier
  199. old question - lost answer 6AS7 SE amp
  200. My KT88 SE project
  201. Motorola OPT
  202. Weird Input transformer hum.
  203. cascode vs asymmetrical cathode coupled
  204. music angel 845 SET
  205. Help! My amp stopped singing...
  206. LTP CCS IXYS with 10m45s opinions
  207. Boozhound Choke Tail Pair for HiFi
  208. 5718 subminiture tube?
  209. fixed bias for push pull tube amps
  210. EC86 and phono
  211. Power Transformer mystery lead....
  212. Bias measurements 6L6
  213. 0A3 Light
  214. Equivalent to Tango NC-10 IT
  215. Ammeter wiring?
  216. Highest Practical Primary Z in OPT?
  217. Ampex 6v6 PP Modifications
  218. Variability of RIAA eq with tube characteristics?
  219. 807/350B/6L6 PP amps PSU ?
  220. Need Help For Tube Amp
  221. ECC83 300B Loftin White amp
  222. Hashimoto and the wonderful 45
  223. Heathkit variac
  224. E80L pentode mode as driver?
  225. Transformer repair
  226. How many ga for chassis wire?
  227. I want to MOD - help?
  228. What About Beam Deflection Tubes?
  229. Placement of Ultralinear Tap On Homemade Transformer
  230. Differential stage with CCS in cathode
  231. Directly heated Cathode/insulation question
  232. "Dirt Cheap SE" 6BM8 spud amp
  233. Single-end Power amp with tubes
  234. Input pot question
  235. Need help putting 6Z4 into PSU Designer
  236. SimpleSE Under Chassis Mounting
  237. Bias methods?
  238. Aikido and SE KT88
  239. Built this pre amp today!
  240. Mystery tube in a Fisher FM-90X - V50,064
  241. Switch contacts for HV supply
  242. The First Sound Recording - we can hear it finally
  243. RCA made in Japan???????
  244. 6V6GT in the SimpleSE
  245. trimmings for amp project
  246. Tube Preamp Hybrid new builder, lots of question!
  247. Chinese mini bias pots
  248. GU-50, GM70 and KT88
  249. Please recommend me an amplifier design.
  250. Single-ended OR push-pull?

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