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  1. Input Volume Pot
  2. Red Army Power-amp
  3. Cloning a HF-60
  4. Michaelson & Austin TVA-1 info
  5. analyze a circuit...quiescence current and R-Load
  6. how to calculate SE Coupling Cap Voltage ?
  7. Tubelab Simple SE Rectifier Problem?
  8. Mullard ECC88
  9. Engineering vs tube rolling
  10. Diode Peak working voltage ?
  11. Help wanted; combining topologies to "new" 807 PPP design ?
  12. Tubelab Simple SE with two Transformers - Centertaps?
  13. Hybrid Amp
  14. transformer information need help
  15. Replacing a cathode resistor with a CCS
  16. DC offset and relays
  17. Sourcing JJ 300B tubes
  18. EICO HF-12 Iron - Use in Guitar Amp?
  19. Decware Vs Rogue Audio
  20. Global Feedback on Mikael's KT88SE
  21. Generating big voltage swings without 'iron'
  22. 6AS7G Grid Voltage ??
  23. Next project 6EM7
  24. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  25. What to replace these caps with?
  26. 5691 plate value ratings
  27. Bussiness trip to Singapore
  28. Paco mike tube amp
  29. Emergency help with Wes' amp
  30. 2A3 without cathode bypass cap???
  31. Best way to burn-in my new SE xfrmers on the bench?
  32. tubelabse pt wiring
  33. Need help with my ST70
  34. 6sn7 direct coupled and transformer coupled
  35. Hickok 605A Test 6DJ8
  36. Grounded Grid Preamp
  37. Beginner WLTM fixer of 300B hum...
  38. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  39. How to figure gain on split-load with positive feedback?
  40. Mikaels KT88SE & VTV Octal Linestage
  41. idiot needs help making sense of funny squigles - Filmosound
  42. Custom Transformer?
  43. How are this schematic ?
  44. Need help with a Tube preamp Kit (6Z4, 6N3)
  45. data sheets for 7239 and 8068
  46. John Swenson's New BDT preamp
  47. no coupling caps
  48. 6SN7GT brand
  49. tube voltage regulator error amp
  50. driving 845's
  51. Just ordered a Korg EMX-1
  52. Maida for Screen Supply
  53. cracked el34 -> replacement squeals
  54. SimpleSE goes Push Pull
  55. Possibly defective Mullard 12AT7?
  56. Basic measurement question re: shorts
  57. EL84 DC 10Y Project
  58. TubeCad Journal FET CCS
  59. russian tube
  60. Source for #81 light bulb for Hickok Fuse
  61. pchw 's tube hybrid amp accurian info
  62. 3c24 se amp
  63. schematic of firstsoundaudio pre amp
  64. 300b-98c mesh bias
  65. 6SN7 coin base tubes
  66. tube rectifiers and electrolytic reforming w/ variac
  67. I'm running my leak stereo 20 single ended. WHAT???
  68. Varnish on old transformer
  69. SE parallel output questions
  70. Darius Loftin White explained
  71. best capacitor
  72. New Sensor's "Mullard" EL34 reissue?
  73. Best Way to Control Plate Voltage?
  74. Any Mods for a Noisy Leak Point one Stereo?
  75. tubes for 87db spendor
  76. 4v for rectifier tube
  77. Need help rebuilding old PA amplifier!
  78. inverted?
  79. Old Tube Radio - Restoration Project
  80. quick - need parts retailers Wash DC area
  81. H&K Tubeman Circuit Questions (added schematics!)
  82. Marshalls: Why did 600V B+ become 470V?
  83. Raising filament winding above cathode with a EZ81 in the circuit OK?
  84. Problem with Beard Audio
  85. 100K pot in a preamp?
  86. Motor Run Capacitor
  87. Power transformer for 6883B tube uses?
  88. EAGLE PCB help with socket on it
  89. Rca Mi-38188
  90. C- Battery Supply
  91. Seperating Preamp from Amp in Integrated Amps
  92. Wind my own output transformer for 100w bass amp
  93. Please help me in getting rid of the buzz.
  94. Tube Phono stage dilema
  95. Grounding with single tap secondary...
  96. VTL - Manley stereo 75
  97. What about KT100 in SE ?
  98. Tube amplifier kit needed to drive low efficiency speaker
  99. feeling very pleased with myself
  100. Quicksilver Retube
  101. My Totem Arro 4 ohm load on KT-88 based amp
  102. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  103. for fans of the EL38 - the E3375
  104. 811a Opt
  105. Guitar amp for Wes is running!
  106. Pure class-A or class AB?
  107. 12B4 PP Full Differential Amp Notion
  108. My opinion on Audio Note M10 schematic - Japan version
  109. B&K 650 tubecharts
  110. Help, I need your advice - What Next?
  111. Sloppy, Unreadable, Childlike schematics
  112. Anybody going to tomorrow's NVCF fair in Leamington?
  113. Randall RGT 100 Amp Problem
  114. Pete's SE E-Linear
  115. 0A2 or 0D3 ?
  116. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  117. LTP feedback
  118. Need help with my super six...
  119. EL509 as a CF
  120. SE Diode
  121. 6FD7, 6BM8 or other
  122. My OLD Project....... cheap tube audio project!!!
  123. tube noise
  124. Fisher 400 questions
  125. RL12P35 amplifier
  126. 6AS7 ppp
  127. 6j5 dc coupled to 12b4a as 2a3 driver
  128. '81 Twin problems
  129. The sound of different EL34īs.
  130. Output transformer and FB
  131. Triode curves for 6AU5
  132. 26/el-84 amp possible..?
  133. Vaic 52B monos
  134. Hour Meter for a Tube Amp..
  135. volume pot replacement
  136. Any Ampeg SVT-II (non-pro) schematics???
  137. Ampex 600
  138. Tubing Testing...how are these numbers?
  139. No-R No-C Power Supply
  140. Are my Speakers efficient enough for my Amp?
  141. doesn't sound quite right
  142. 6DJ8 alternates?
  143. Is this the dumbest question?
  144. Fuse between B+ and output transformer?
  145. Telefunken Double Label Error...Ever seen this?
  146. 300B Summer Build Question
  147. 1,25kW tube amplifier/modulator
  148. 12sn7 heater-cathode voltage
  149. Toroidal output transformers with screen drive- why not?
  150. Help With 6v6 Spice Model
  151. Different 5AR4's have different voltages and warm up time.
  152. Edcor OPT in S5 Electronics K-16LS kit?
  153. SRPP Powersupply, replace R with choke ?
  154. First tube amp
  155. Best low-signal direct heated triodes?
  156. 25-position switched attenuator using a pair of 5-position switches?
  157. Help with dead Jadis Defy7 Amp
  158. Bring test points to chassis - Tubelab
  159. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  160. Remote control for integrated tube amp
  161. EL34 pp "fixed" bias is wandering
  162. US sources Russian Surplus
  163. 6550 SE class project (continued)
  164. Convert RCA tuner/pre to high perf AM only
  165. Metal Can 6CA7s
  166. Bypassing B+ in PP amp
  167. Tube shunt regulator for phono amp
  168. Triplett tube tester help
  169. Motor run Caps Question
  170. speaker that can be driven by tube amp
  171. Which perf board?
  172. Looking for schematic/info for a Knight KN 3050 PA Amp
  173. Need help with volume control.
  174. Flame triodes!
  175. make OPT
  176. Tube GU50 made in Russia
  177. Expectations of new tube specs
  178. DC on preamp input
  179. We're up and going!
  180. Putting serial number on tubes
  181. Which of these tubes is best?
  182. Stepped attenuator resistor calculation software
  183. Help with PSU for tube DAC output stage
  184. single-tube (6GN8) amplifier?
  185. Dukane schematic needed
  186. Bloody pinouts!
  187. Testing 5651WA on the bench
  188. phase splitter concerns ?
  189. phono pre RIAA 2001
  190. Quick output transformer wiring question
  191. Can I.....
  192. Cathode FB P.P. Strange behaviour.
  193. Historic Valve Assembly Vids Mullard Content
  194. Unknown output impedance
  195. Any matching in 12AT7 sections? (SimpleSE)
  196. Over-voltage on heaters...
  197. Stray capacitance of CCS
  198. CCS Design for DHT Filaments
  199. coupling cap value help for tubelabSE
  200. YAQIN MC-10L to Klipsch B-3 Speakers
  201. Sonic effects of tubes
  202. Gubin Valve Stereo Amplifier Question
  203. 6J5 Shootout - which one's best?
  204. Chinese Tube Amps?
  205. 26 DHT users please comment on what you built & use.
  206. Guitar amp project report
  207. auricap Vs musicap (Another Cap Question)
  208. Help with splitter design for 7591 PP
  209. Question regarding PS ripple in guitar amps - TubeLab?
  210. Tron Seven
  211. blue glow on one channel
  212. Suitable Power Trans for 6gw8/6bm8/el84
  213. Dynaco Pas 3 Hiss from HV regulator
  214. PS Problem: How do I Reduce Voltage?
  215. Got the build itch again. 80w kt88
  216. lm317 CCS question
  217. LM334z
  218. Parafeeding a Tetrode
  219. Differential stage biasing choice
  220. Got an overshoot problem.
  221. Help! What could possibly be wrong?
  222. Noise - 6J5 - 71a -300B amp
  223. crude, simple and powerful PP-amplifier
  224. What's the appeal of type 80 rectifiers?
  225. Guitar amp layout second thoughts
  226. 6N7 PP amplifier
  227. 300 KW tube audio amplifire-modulator
  228. Weird amp on ebay
  229. which type of rubber cushion under transformers?
  230. 12at7 LTP CCS
  231. Which value of a potentiometer
  232. Strange circuit - heater hum opt feedback?
  233. Aikido question
  234. Tubelab SE diode substitute
  235. Copland CTA-402 Phono Section Comments
  236. modified sine wave power inverter
  237. Rebiasing my DSL-100
  238. My EL84 SE
  239. K-16LS kit Assembled and Working
  240. Claus Byrith 30W PP
  241. Aikido pre and class T amplifier ...for a newby
  242. Best replacement for Black Gate WKZ?
  243. DIY Jukebox!!
  244. Partial feedback confusion
  245. Anyone used the 7C7 loktal pentode?
  246. Is vacuumtubes.net still in business?
  247. Rectifier Tubes
  248. music angel kt88 tube amp schmetic needed
  249. Next project suggestions
  250. Unpotted Peerless 16309 OPT from Heath W5m

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