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  1. Simple Magic Eye Circuit Wanted
  2. Mute circuit on sonic frontier line one
  3. Data point software?
  4. MingDa MC-3R / icon audio la3 preamp mods
  5. Biasing
  6. Compactron characteristic curves?
  7. Analog Metric grounded grid preamp kit
  8. Possible group buy of Lundahl input/phase splitter transformers.
  9. Audio Measurements
  10. B/A 20-4 tube mono block??
  11. Strange find.. help ID?
  12. 813 Thoughts
  13. External 12V heater supply conversion question
  14. My Latest Acquisition
  15. 50/60/whatever cycle hum
  16. OEP input transformers. Anyone used ??
  17. Restack transformer from PP to SE
  18. Se 807??
  19. Min 9-pin or 7-pin sockets to fit octal-sized holes?
  20. Question about phono preamp schematic
  21. Lectron JH50 unknown parts?
  22. Fostex or Car Speakers for My Tube Car Amp
  23. schematics? (also some questions)
  24. Regulated Power Supply. Bipolar, JFET or MOS?
  25. UL to triode mode conversion on cathode bias amp-different cathode resistors needed?
  26. Blown up resistor in S-5 amp kit...
  27. EZ80 or 81
  28. Gun or Iron?
  29. Shanling SP-80C Problem - DC Spikes?!
  30. Silvertone Organ amp, weird osc section.
  31. Need some advice on a LTP input stage.
  32. CAT 110V to 220 V conversion
  33. When is a compactron not a compactron?
  34. Looking for big Ni lams
  35. Three PP KT88 designs. Which one ... (please;-)
  36. EAR 834P needing repair
  37. How to make non-polarized electrolytic cap?
  38. Toasted PW tranformer?
  39. Tube Cad from Glass-Ware questions
  40. U-links for earthing
  41. Supreme 45 tube amp
  42. Boxing Day Special
  43. Look what Santa brought!
  44. Soft Start for Tubes
  45. Need help to check out this preamp schematic.
  46. What dimensions for perforated AL sheet?
  47. NC pins on submin tubes
  48. Cheap alternative to EF86
  49. MOSFET follower driver oscillation
  50. Fender "Twin Reverb Amp" has no output.
  51. Hi-Fi system build
  52. Car Tube Amp
  53. Tube Identification
  54. Supratek schematics?
  55. Choice of OTL output capacitors
  56. Feedback scheme.
  57. Christmas Eve
  58. Best tubes for Scott 222
  59. HH Scott 222 speaker recommendations and upgrades
  60. mixing coupling cap types
  61. Transformer chassis layout
  62. SimpleSE / Edcor CXSE OPT
  63. Star ground help
  64. What causes my 0D3 to extinguish?
  65. converting UL in triode
  66. Beyer Dynamic BV35570
  67. Lundahl LL1527 phase-splitter
  68. Morgan Jones HPA ...strange startup behaviour
  69. Best Sounding Phono Input Tube
  70. We417+300b
  71. class-A PP amplifier with 2x 845 question
  72. Kismet-300B-amp
  73. Will differential share the same THD characteristics as SE, if same triode is used?
  74. The biggest bunch of tubes ever seen
  75. DHT AC Filament Noise
  76. augmented cathode follower?
  77. Tube amp find in old theater
  78. Is there a better amp kit????
  79. figuring amplification factor of a tube
  80. SE 6l6
  81. Need help
  82. Dynaco (Dynaclone) PA060 transformer
  83. Switching power supply for tube filaments possible???
  84. Mysterious UTC X-2806 / RCA 949426-2 Transformer
  85. DN2540/2535 fun and games
  86. 6P3S SE amp requesting
  87. Newbie needs Magnavox console troubleshooting tips
  88. 6bBYGA x2 as full-wave rectifier?
  89. Digital volume/tone control in Tube amps
  90. plotting load-line for OTL amp?
  91. New SE 6P15P project
  92. New Production Shuguang Type 50 Tubes
  93. Running different tubes
  94. Fairchild 260 rebuild questions
  95. Filament Voltage vs. Hum
  96. drawing a loadline from schematics
  97. Know this tube? 10J12C or 10X12C ...
  98. Precision Fidelity - C7 Mods...help Wanted!
  99. stupid newbie: what is this transformer???
  100. Anyone else having problems with Mercury Magnetics transformers?
  101. EF86-EL84: too much gain!
  102. Balanced Power
  103. GTA 300B SE Mk.II Power Transformer
  104. Tube Shields
  105. Some basic questions about s-5 amp kit mods
  106. Novice Voltage Regulator Question
  107. The Critical Ear
  108. Tube matching service - As found on Craigslist
  109. 6j1 question
  110. Duosonic 40's era record player
  111. 6bl8 el84 nfb question
  112. 6T9 push pull
  113. 12AY7 circuit?
  114. E810F: RIAA circuits
  115. need EL519/6KG6 spice 3f4 model
  116. enough gain for James tone stack
  117. Anyone recognise this amp?
  118. Retubing my amp (EL84, ECC81, ECC83) - Tube recommendations?
  119. matched tubes?
  120. List of current production types
  121. Soundcard greater than 24-bit
  122. Replacing Valves Leak Stereo 20
  123. Help designing Class-A, tube, transformer coupled, studio grade pre-amp
  124. I Damaged my Amp?
  125. EL84 Triode PP Design
  126. pentode with grid AND cathode tied to gnd?
  127. What d'you put in the PSU chassis, and what in the circuit chassis?
  128. a real no-brainer question about 1/2 tubes
  129. 813 power supply question
  130. ESR of motor-run caps?
  131. OPT-102 - data? (Audio Electronic Supply)
  132. Help me out with a circuit design
  133. Partial Feedback EL84PP - Not quite as expected (yet)
  134. Preamp suggestions - Help a hack have some fun
  135. 6GK6 Ultralinear
  136. Vacuum Rectifier Question
  137. LM4702 meets up with 6550's
  138. 6bx7gt envelope temperature
  139. Counterpoint SA 3 schematic
  140. Tubes measured in microhms = mA..?
  141. Checking ARC SP9
  142. 6J11 Datasheet anyone?
  143. Help cleaning tube pins
  144. Best way to use a PAIR of 6SL7ís to drive a 300B?
  145. preamp cathode bypass cap benefits
  146. EF184 or (EC)L82 radio amplifier?!
  147. 5687 for Aikido
  148. Pre Amplifier Out Sockets
  149. Recommended output valves for this transformer
  150. power tubes and learning SET design
  151. Phono pre-amp Question
  152. TVA-1 cathode resistor value
  153. need power tranformer ideas
  154. Cary Cad-300b Se
  155. newbie question about 7591 cathode bias
  156. 5814 Raytheon Windmill Getter late 50's
  157. Fundamentals of tube amp design
  158. 7868 amp sounds good but low volume
  159. How does class AB2 sound?
  160. 6sn7 brand
  161. Might speaker filters be in the wrong place?
  162. Problem: attenuation after cathodyne and CF
  163. LED bias and differential pairs
  164. Kimmel Mu stage summary sheet
  165. Tube buffer for car audio
  166. Practical PSE thinking.
  167. I need help on a Simple guitar/vocal pre amp.
  168. Kr300bxls
  169. Biggest noval dual triode?
  170. 2 amps with 1 set of speakers?
  171. tubeamp kits
  172. Tripletone amplifier
  173. Tube curves tracer
  174. Help with Shunt Regulation and Noise
  175. Plug 'N' Play B+ time delay
  176. Hot Rod "Bronco" project/TRANSFORMERS
  177. Precision PA conversion help needed
  178. Caps in Voltage divider Heater Bias ?
  179. Looking for Melos triode 200+ schematics
  180. ETF07 brief summary
  181. No response from Vacuumtubes.net
  182. dynakit pam selenium rectifier replacement help
  183. Adjustable Fixed Grid Bias
  184. Best output transformer for 300B
  185. Transconductance of E88CC,6922,6N23P
  186. Finding The Root Of The Problem
  187. Beard P35
  188. purple tube heaters...
  189. Which 12AU7 and 6V6GTs?
  190. 6f2 - 6n1???
  191. Help with Schematic
  192. Class A Push Pull with 6L6GC
  193. EL84 driver tube, with less than 5mA current
  194. Sleeping Sickness
  195. 50L6-GT or 6W6-GT
  196. Help ID this transformer
  197. Tube dropping - Help?
  198. For anyone running a K-502 with a FR driver
  199. Active crossover
  200. General guidence building guitar amp
  201. Pounds, Shillings and Pence
  202. Trying to learn something, against my better judgment
  203. Battery grid bias to fixed bias in Toccato?
  204. PLS take a look!
  205. Use for 5K:8 PP OPT?
  206. Low amp Impedance input and high dac output
  207. The Magic of a Name
  208. which edition of Morgan Jones' books?
  209. altec 1530 schematic
  210. Can this wire be used inside tube amp, H07V-K 1.5mm2?
  211. 6HB6/6HA& Spud?
  212. schematic diagram golden tube se40 for repair! help
  213. Reliable B+ PSU for pro preamp
  214. Help me find some info please
  215. Some tube radios
  216. Electro Harmonix 300b...shorting problems?
  217. Aikido linestage tube choice? (again)
  218. Teeco 1220??
  219. magic smoke pilot aa903
  220. PP bias balance pot
  221. Jolida JD 502A
  222. Cathode Bias for SimpleSE
  223. TRemPre malfunctioning
  224. HV benchtop power supply, help on opamp setup
  225. Transcendar Output Transformers ST70
  226. Unofficial Tube Market Survey
  227. testing 6DJ8s
  228. 6L6 AB PPP stage; does it make sense?
  229. 7868 tubes - replace with 6L6's?
  230. Vintage Amp...too much gain on CD
  231. ETF07 - Last possibility to join
  232. Tube 7403
  233. New SET: JE labs simple 45 or tubelab SE?
  234. Melos triode and computer as source: BUZZ BUZZ BUZZ
  235. 6SN7 Cascoded CCS
  236. 7591 se tube amp?
  237. Sovtek 5881WXT/Quad II
  238. Adding more capacitors to an AMP
  239. Tube Characteristics
  240. Tube guilt
  241. KT88 or 6550
  242. Single ended OTL Transcendent
  243. K-12 kit, buzz in R channel
  244. Hickok 752A repair
  245. my new tube line stage
  246. Audio Innovations Series 200 Phono Stage
  247. is it correct to calculate OTL?
  248. Late Halloween Cartoon
  249. on/off/on switch for bright/bold?
  250. Another CCS for tubes/valves: PCBs

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