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  1. Hybrid Amp
  2. transformer information need help
  3. Replacing a cathode resistor with a CCS
  4. DC offset and relays
  5. Sourcing JJ 300B tubes
  6. EICO HF-12 Iron - Use in Guitar Amp?
  7. Decware Vs Rogue Audio
  8. Global Feedback on Mikael's KT88SE
  9. Generating big voltage swings without 'iron'
  10. 6AS7G Grid Voltage ??
  11. Next project 6EM7
  12. Anyone built a tube-based (6BE6 or 6HS8) volume control?
  13. What to replace these caps with?
  14. 5691 plate value ratings
  15. Bussiness trip to Singapore
  16. Paco mike tube amp
  17. Emergency help with Wes' amp
  18. 2A3 without cathode bypass cap???
  19. Best way to burn-in my new SE xfrmers on the bench?
  20. tubelabse pt wiring
  21. Need help with my ST70
  22. 6sn7 direct coupled and transformer coupled
  23. Hickok 605A Test 6DJ8
  24. Grounded Grid Preamp
  25. Beginner WLTM fixer of 300B hum...
  26. Bell 2420 tube amplifier. Bias question. 6v6 push pull
  27. How to figure gain on split-load with positive feedback?
  28. Mikaels KT88SE & VTV Octal Linestage
  29. idiot needs help making sense of funny squigles - Filmosound
  30. Custom Transformer?
  31. How are this schematic ?
  32. Need help with a Tube preamp Kit (6Z4, 6N3)
  33. data sheets for 7239 and 8068
  34. John Swenson's New BDT preamp
  35. no coupling caps
  36. 6SN7GT brand
  37. tube voltage regulator error amp
  38. driving 845's
  39. Just ordered a Korg EMX-1
  40. Maida for Screen Supply
  41. cracked el34 -> replacement squeals
  42. SimpleSE goes Push Pull
  43. Possibly defective Mullard 12AT7?
  44. Basic measurement question re: shorts
  45. EL84 DC 10Y Project
  46. TubeCad Journal FET CCS
  47. russian tube
  48. Source for #81 light bulb for Hickok Fuse
  49. pchw 's tube hybrid amp accurian info
  50. 3c24 se amp
  51. schematic of firstsoundaudio pre amp
  52. 300b-98c mesh bias
  53. 6SN7 coin base tubes
  54. tube rectifiers and electrolytic reforming w/ variac
  55. I'm running my leak stereo 20 single ended. WHAT???
  56. Varnish on old transformer
  57. SE parallel output questions
  58. Darius Loftin White explained
  59. best capacitor
  60. New Sensor's "Mullard" EL34 reissue?
  61. Best Way to Control Plate Voltage?
  62. Any Mods for a Noisy Leak Point one Stereo?
  63. tubes for 87db spendor
  64. 4v for rectifier tube
  65. Need help rebuilding old PA amplifier!
  66. inverted?
  67. Old Tube Radio - Restoration Project
  68. quick - need parts retailers Wash DC area
  69. H&K Tubeman Circuit Questions (added schematics!)
  70. Marshalls: Why did 600V B+ become 470V?
  71. Raising filament winding above cathode with a EZ81 in the circuit OK?
  72. Problem with Beard Audio
  73. 100K pot in a preamp?
  74. Motor Run Capacitor
  75. Power transformer for 6883B tube uses?
  76. EAGLE PCB help with socket on it
  77. Rca Mi-38188
  78. C- Battery Supply
  79. Seperating Preamp from Amp in Integrated Amps
  80. Wind my own output transformer for 100w bass amp
  81. Please help me in getting rid of the buzz.
  82. Tube Phono stage dilema
  83. Grounding with single tap secondary...
  84. VTL - Manley stereo 75
  85. What about KT100 in SE ?
  86. Tube amplifier kit needed to drive low efficiency speaker
  87. feeling very pleased with myself
  88. Quicksilver Retube
  89. My Totem Arro 4 ohm load on KT-88 based amp
  90. using flash camera (and maybe laptop screen or fluorescent) inverters to power tubes
  91. for fans of the EL38 - the E3375
  92. 811a Opt
  93. Guitar amp for Wes is running!
  94. Pure class-A or class AB?
  95. 12B4 PP Full Differential Amp Notion
  96. My opinion on Audio Note M10 schematic - Japan version
  97. B&K 650 tubecharts
  98. Help, I need your advice - What Next?
  99. Sloppy, Unreadable, Childlike schematics
  100. Anybody going to tomorrow's NVCF fair in Leamington?
  101. Randall RGT 100 Amp Problem
  102. Pete's SE E-Linear
  103. 0A2 or 0D3 ?
  104. Counterpoint SA7 modification.. shottky diodes.. thoughts?
  105. LTP feedback
  106. Need help with my super six...
  107. EL509 as a CF
  108. SE Diode
  109. 6FD7, 6BM8 or other
  110. My OLD Project....... cheap tube audio project!!!
  111. tube noise
  112. Fisher 400 questions
  113. RL12P35 amplifier
  114. 6AS7 ppp
  115. 6j5 dc coupled to 12b4a as 2a3 driver
  116. '81 Twin problems
  117. The sound of different EL34īs.
  118. Output transformer and FB
  119. Triode curves for 6AU5
  120. 26/el-84 amp possible..?
  121. Vaic 52B monos
  122. Hour Meter for a Tube Amp..
  123. volume pot replacement
  124. Any Ampeg SVT-II (non-pro) schematics???
  125. Ampex 600
  126. Tubing Testing...how are these numbers?
  127. No-R No-C Power Supply
  128. Are my Speakers efficient enough for my Amp?
  129. doesn't sound quite right
  130. 6DJ8 alternates?
  131. Is this the dumbest question?
  132. Fuse between B+ and output transformer?
  133. Telefunken Double Label Error...Ever seen this?
  134. 300B Summer Build Question
  135. 1,25kW tube amplifier/modulator
  136. 12sn7 heater-cathode voltage
  137. Toroidal output transformers with screen drive- why not?
  138. Help With 6v6 Spice Model
  139. Different 5AR4's have different voltages and warm up time.
  140. Edcor OPT in S5 Electronics K-16LS kit?
  141. SRPP Powersupply, replace R with choke ?
  142. First tube amp
  143. Best low-signal direct heated triodes?
  144. 25-position switched attenuator using a pair of 5-position switches?
  145. Help with dead Jadis Defy7 Amp
  146. Bring test points to chassis - Tubelab
  147. Heads up! New unbuilt Dynaco ST-70 kit on ebay
  148. Remote control for integrated tube amp
  149. EL34 pp "fixed" bias is wandering
  150. US sources Russian Surplus
  151. 6550 SE class project (continued)
  152. Convert RCA tuner/pre to high perf AM only
  153. Metal Can 6CA7s
  154. Bypassing B+ in PP amp
  155. Tube shunt regulator for phono amp
  156. Triplett tube tester help
  157. Motor run Caps Question
  158. speaker that can be driven by tube amp
  159. Which perf board?
  160. Looking for schematic/info for a Knight KN 3050 PA Amp
  161. Need help with volume control.
  162. Flame triodes!
  163. make OPT
  164. Tube GU50 made in Russia
  165. Expectations of new tube specs
  166. DC on preamp input
  167. We're up and going!
  168. Putting serial number on tubes
  169. Which of these tubes is best?
  170. Stepped attenuator resistor calculation software
  171. Help with PSU for tube DAC output stage
  172. single-tube (6GN8) amplifier?
  173. Dukane schematic needed
  174. Bloody pinouts!
  175. Testing 5651WA on the bench
  176. phase splitter concerns ?
  177. phono pre RIAA 2001
  178. Quick output transformer wiring question
  179. Can I.....
  180. Cathode FB P.P. Strange behaviour.
  181. Historic Valve Assembly Vids Mullard Content
  182. Unknown output impedance
  183. Any matching in 12AT7 sections? (SimpleSE)
  184. Over-voltage on heaters...
  185. Stray capacitance of CCS
  186. CCS Design for DHT Filaments
  187. coupling cap value help for tubelabSE
  188. YAQIN MC-10L to Klipsch B-3 Speakers
  189. Sonic effects of tubes
  190. Gubin Valve Stereo Amplifier Question
  191. 6J5 Shootout - which one's best?
  192. Chinese Tube Amps?
  193. 26 DHT users please comment on what you built & use.
  194. Guitar amp project report
  195. auricap Vs musicap (Another Cap Question)
  196. Help with splitter design for 7591 PP
  197. Question regarding PS ripple in guitar amps - TubeLab?
  198. Tron Seven
  199. blue glow on one channel
  200. Suitable Power Trans for 6gw8/6bm8/el84
  201. Dynaco Pas 3 Hiss from HV regulator
  202. PS Problem: How do I Reduce Voltage?
  203. Got the build itch again. 80w kt88
  204. lm317 CCS question
  205. LM334z
  206. Parafeeding a Tetrode
  207. Differential stage biasing choice
  208. Got an overshoot problem.
  209. Help! What could possibly be wrong?
  210. Noise - 6J5 - 71a -300B amp
  211. crude, simple and powerful PP-amplifier
  212. What's the appeal of type 80 rectifiers?
  213. Guitar amp layout second thoughts
  214. 6N7 PP amplifier
  215. 300 KW tube audio amplifire-modulator
  216. Weird amp on ebay
  217. which type of rubber cushion under transformers?
  218. 12at7 LTP CCS
  219. Which value of a potentiometer
  220. Strange circuit - heater hum opt feedback?
  221. Aikido question
  222. Tubelab SE diode substitute
  223. Copland CTA-402 Phono Section Comments
  224. modified sine wave power inverter
  225. Rebiasing my DSL-100
  226. My EL84 SE
  227. K-16LS kit Assembled and Working
  228. Claus Byrith 30W PP
  229. Aikido pre and class T amplifier ...for a newby
  230. Best replacement for Black Gate WKZ?
  231. DIY Jukebox!!
  232. Partial feedback confusion
  233. Anyone used the 7C7 loktal pentode?
  234. Is vacuumtubes.net still in business?
  235. Rectifier Tubes
  236. music angel kt88 tube amp schmetic needed
  237. Next project suggestions
  238. Unpotted Peerless 16309 OPT from Heath W5m
  239. 6au6 Cf
  240. Direct-Coupling Question
  241. Help on CCS PP differential driver stage for SE 845 amp
  242. I'm Looking for this Similar Schematic !
  243. ECL86 preamp critique please
  244. Low cost 6AV5 design questions (long)
  245. Got my tube spice models, and tubed CD player page back on the air
  246. Vsac 2008?
  247. How hot do Hammond chokes get?
  248. Transformer current question
  249. TubelabSE - best MOSFET choice?
  250. WTD: Reviewer/Writer For DIY Articles

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