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  1. 12AX7 gain stage output impedance
  2. Small 1W hifi amp
  3. Tube Radio - What are G & F Terminals?
  4. Has anyone seen this?
  5. how would you Parallel a 12ua7 tube
  6. Tube mod a HT rcvr?
  7. how would i series a 12au7a
  8. does some have distortion schematics for 12au7a
  9. triode strapped tetrode
  10. 6F6G UL Amplifier
  11. Build a VT100?
  12. turrets for tube PC driver board needed
  13. Mikael Abdellah's kt88, (LOADLINES)
  14. piezo amp discussion on loudspeaker forum
  15. Balanced interconnect to differential amp - how would you do it?
  16. Ebay Tube Preamp Kit
  17. Kiwame resistors
  18. Mains isolation - would this work?
  19. 6CA7 Mikael Abdellah's KT88 SE amp?
  20. Tube heaters AC or DC?
  21. Question about system design with the K-12
  22. CCS on SE 2A3 cathode
  23. Saucepan Amplifier
  24. Rectifier query
  25. Fisher 400c
  26. Hum Problem
  27. Shanghai: please recommend some audio shops
  28. Calculating max Anode Voltage
  29. One thought about improved Single Ended amplifier
  30. low distortion sweep generator - not a PC
  31. Any articles on how to bias correctly
  32. Max dissp of EH 6sn7
  33. Switched Capacitor Impedance Converter
  34. Chinese Output transformer for 300B SET
  35. Is a VTVM useful?
  36. Permanent thread name proposal
  37. Loctal Rectifiers
  38. Silk Transformers
  39. Noob Power transformer for Tubelab SimpleSE
  40. Gain Q
  41. What cable between PSU and Amp?
  42. luxman mq 36 schematics
  43. Nonstandard tubes for audio? Quadrature grid chorus effect?
  44. Parts assortments sold with organizer
  45. Re-Gapping OPT
  46. I want to begin but I don't know how!!!
  47. Ultralinear with zener on the screen
  48. ReSEPP Design: 5 Tubes 4 Natural Sound
  49. Chinese Tube Amp?
  50. Ampex 351 - Mic pre
  51. Another ground question
  52. for the life of me
  53. Front Panel Express finishes
  54. transformer spec
  55. diode bridge - 10000uF cap - diode tube - small cap - HV+
  56. passive components affected by magnetic fields?
  57. Help on Pentode Octal Phono Stage (POPS)
  58. Cascode gain. Did I do something wrong?
  59. Bad Tube in my "new" Hammond C2 Organ preamp? HELP w/ diagnosis!!
  60. Need tube data for 10Y
  61. Bending aluminum?
  62. Does anyone recognise this 12AU7?
  63. Phase splitting--how does it work?
  64. Construction technique?
  65. function generator
  66. Ceramic or Magnetic with new preamp?
  67. Melos Triode 200 fuses
  68. Fantasia Disney amp
  69. Ella amplifier problems
  70. SE design questions before I start my project
  71. Single stage preamp
  72. Help me to identify unknown tube
  73. PSU Question...Full Wave Bridge
  74. 6as7g Se
  75. Music Angel Modification
  76. 6SL7 Phono Preamp
  77. Grounded Grid Preamp
  78. Formula question
  79. 6N9S different versions
  80. Stoetkit Amps
  81. PSUD question
  82. 6922 -- curing the ultrasonic RIAA blues
  83. Need Help Setting Heater Voltage
  84. Sub-Miniature Tube Amplifier
  85. Burned out power tube
  86. www.agora.lesina.org
  87. suggestions for a rectifier
  88. scott 222 recap issues
  89. Adcom integrated/tube amp project
  90. Auricaps - 400V vs 450V (SimpleSE)
  91. ratings of output transformer???
  92. Class-g / class-h
  93. Cascading gain stages in a tube preamp
  94. OT impedances calculations: where's my mistake??
  95. phase splitting transformers
  96. Tubelab some simpleSE related Qs
  97. 6L6 PPP UL amp
  98. g2 driven tubes
  99. Selecting an IT impedance
  100. preamp get a hum when volume is at full or 80% is thier away to stop it??
  101. What can you replace the 12AU7A with???
  102. My 12AX7 zero negative feedback preamp, with measurement
  103. improving the Transcendentsound GGP preamp
  104. Check out my new Phono stage
  105. load line UL v.s. triode
  106. Line-Stage w/ balanced output
  107. Dropped a SIF Ba
  108. RCA logos and boxes
  109. Type 24 or 24a for linestage..?
  110. Line output as line input transformer?
  111. Siemens codes
  112. Moskidos on the way.
  113. Another transformer question
  114. KT88 Push-Pull
  115. 45 -> 813 Interstage
  116. Ulyanov currently manufacturing the 6c33C?
  117. Is PSU Designer II correct?
  118. How much weight can the Hammond chassis hold?
  119. Inner detail, as opposed to?
  120. Power Transformer for 6V6 SE Amp Question
  121. Can this schematic work? 6N6P driver with 6C33C-B OTL
  122. Tube rating
  123. Best driver for KT88 Triode SE.
  124. Unusual tubes to drive a JAN 829B
  125. LTP w/CCS tail and plate loads
  126. EL86 OTL
  127. Russian PIO caps. Should I use them?
  128. 300B shootout
  129. Stay tuned for the Pass F4 tube preamp
  130. 6j4 oscillating?
  131. My 6N23P tubes
  132. Tone linestage idea
  133. SimpleSE amp: multiple taps with cathode feedback
  134. 7W enough for 90dB speakers?
  135. Meaning of "hard to drive"
  136. Plate load resistor question
  137. BWD 216a power supply circuit needed, please help
  138. 1st DIY project in a loooooong time
  139. Another AG9016 "addict"
  140. angela EL34 improvement and mods
  141. $120 battery powered tube amp on eBay??
  142. Help with 6AQ5 schematics
  143. 5691 black base?
  144. DIY vacuum tubes!
  145. Replacing 5-pin DIN inputs on a Telefunken Radio? +weird speaker output?
  146. working out Z out for tube with IXYS IXP10M45S plate load
  147. Review of New S-5 K-16LS Kit
  148. Dumb question.
  149. Suggest KT88 Push-Pull schematics, please.
  150. AIKIDO: Main Thread???
  151. 10Y/45 schematic wanted
  152. Dynaco ST-70 Kits Compaired FYI
  153. Mini amp using 12AU7's as power tubes?
  154. Quick question about star grounding
  155. 3K or 5K OPT in EL35 SimpleSE?
  156. Bogen L60 schematic
  157. k-12
  158. Suggestion on tube for CCS
  159. Whats the model for this?
  160. ECL 82 schematic to suggest
  161. Andrea Ciuffoli's KT88 PP
  162. Looking for comments on Welborne Labs PS10 reg. HT supply
  163. Thoughts and suggestions needed.
  164. PSU shunt capacitor selection
  165. Looking for comments in my first 300B project
  166. Transformer Coupling Questions
  167. ECL82 power supply question
  168. CGV-300B Amp Results...Fun.
  169. power transformer rating and tube current - SimpleSE
  170. Ping Drummerwill.
  171. Taking a Hammond 369BX filament winding to the limit?
  172. Using moter run caps in PSU.
  173. Speaker connect: Speakon or banana
  174. 50k or 100k output impedance.
  175. Need help remembering the name of a hybrid amplifier design book
  176. Measuring Output Impedance of Power Supply
  177. knob with long end for alpha pots
  178. IT tutorial n selection
  179. Anybody help identify these tubes
  180. CT wire -quick question
  181. New Amplifier
  182. Master Volume for Active Tube Crossover?
  183. Tube lifetime
  184. Raleigh Audio Preamp - somebody heard ?
  185. Mikael Abdellah SE KT88 ideas and questions
  186. Bogen CHB-35 to conversion to B-12/B-15
  187. Melos triode 200+ looking for spare parts
  188. Opinions on integrated amp project
  189. 6AL5 for clipping diodes?
  190. Confusion over Knight 600 tester numbers
  191. 12AU7A: I need fuzz, overdrive and distortion schematic
  192. 12AT7 vs 12AU7 (interchangeable?)
  193. Angela Electronics - Customer Service
  194. PAS visits the naughty side of town (red lit)
  195. Summing at the LTPI
  196. Test of ECC81 to 83
  197. Was this already posted here? Handmade tubes video
  198. Twist dc filament wire?
  199. Power transformer: How Big?
  200. Heater supply options and to Vhk rating of 6X4 & 6203
  201. Hickok TV-7A/U settings for 8417 tube?
  202. Hammond 125ESE and sections
  203. 6P15P hybrid amp schema?
  204. Switching voltage converter for HV supply
  205. VT4C output transformer
  206. Sound Multiplex Amp
  207. Suggestions needed for improving Rogers Cadet II PP power amplifier
  208. Adjustable Line out off of Extra Speaker Jack
  209. Transcendere Audio
  210. Wrong capacitors!
  211. 6LW6 operating points
  212. ?? xmer specs for Scott LC 21 or 130 Preamp for rewind...
  213. Loctal 6SN7?
  214. Need some help with simulation
  215. output tranny for 6AK6
  216. What tubes for 7K6PP X-former
  217. Ham radio op makes his own triodes
  218. Newbie looking for some advice on mods and tubes for Cayin TA-30
  219. Power Transconductance Amp with Tubes, How?
  220. using the 6BX7 at low'ish current in Aikido
  221. What preamp should I build?
  222. Transformer hookup question.
  223. Home made vacuum tubes
  224. My New EL84 PP
  225. Hammond power transformer fillament rating
  226. Need help with a Russian Triode
  227. TRAFO NEEDED FOR EL84 pp
  228. Difference between 6JN6 (Berning output) and 6JB6 tubes?
  229. 2A3 SE Amp
  230. Soldering tubes directly to PCB?
  231. pa amp distortion at low volume
  232. Potted transformers
  233. if this can works...
  234. Differential scope probes?
  235. Fisher X100B Iron
  236. Solid state power suppy for CAT SL-1
  237. Help with wiring a Hammond Power Transformer
  238. User manual for GTA SE-40 Tube Amp ?
  239. tube caps that fit.. anyone?
  240. Heater wires through conduit
  241. Wanted - Svet Sk4A bases
  242. AC Characteristics of Glow Tubes?
  243. Bargain Used Transformers: Where?
  244. Top cap tube users: pics of your amps?
  245. Question
  246. „New“ Pentode – measuring resistance between grids G2 and G3 – any idea?
  247. Audio Transformers 101
  248. Thinking about having a 211 SET amp built, anyone know of good schematics?
  249. 4-65A Triode curves?
  250. Is This A Good Reliable Tube Tester?

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