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  1. Newbie need to help
  2. Help me please
  3. Elekit TU-870 help
  4. Looking for schematic of Audible Illusion Modulus 3A preamp
  5. Junker Box amp
  6. aikido hybrid with 5 A bias
  7. Shall we compile a list?
  8. drift in direct coupled tubes
  9. Hammond 2XX vs 3XX Power Tranny Questions
  10. Help with this transformer please...
  11. Capacitor upgrade in Paragon 12A
  12. Light bulbs as cathode resistors?
  13. Favorite Threads and Posts in "Tubes" Forum
  14. I need 12v DC- whats the best option?
  15. Beard P35 and Tubes Replacement
  16. Graphic 1/3 Octave Tube Equaliser
  17. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  18. Power Supply Design
  19. Gomes amp
  20. pignose g40v power transformer
  21. Grid battery biased SE output stages
  22. KT88 amp schematic/parts list
  23. Wire Wrap connections for point to point
  24. Aikido Tubes
  25. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  26. Schematic Question
  27. EL34 as triode?
  28. Linestage Questions
  29. Help! Building Jax's HFTA
  30. Gobs of AC on ISCO 494
  31. Change step up ratio of input transformer?
  32. LCR RIAA rebuild
  33. common mode choke question
  34. Choosing Choke
  35. Input impedance
  36. Hey Tubelab, Transformer Question
  37. Hybrid Rectifier Check Please !
  38. 1st tube project, tubalizer?
  39. 1st Time project - Report 1
  40. ED-8000 set amp
  41. Hitachi v-202 scope
  42. Cheap and nice looking SE OPT
  43. How much difference 0.22 vs 0.33 cap?
  44. Tubelab SimpleSE
  45. 813 final design?
  46. HPHV regulator, designed by Emile Sprenger
  47. Counterpoint tube amps
  48. SS or tube voltage amplifying stages in an amp with tube output?
  49. 24V Aikido --> 6GM8 with Buffer
  50. Motorboating in Dynaco ST-70
  51. Does such a tube exist?
  52. Noisy PSU?
  53. Bell & Howell amp
  54. Valve Amp with soild state front end
  55. Controlling transient response
  56. Transcendar Budget SE Transformers
  57. Opinion on New Sensor 6SN7GTB?
  58. Determining optimal OT turns ratio
  59. Splitting up the Power Amp
  60. Sowter 5113
  61. Cascoded 6N6P
  62. MachMat or Tentlabs Heater Supply for 300B
  63. Common mode filtering for heater supplies.
  64. Distortion.
  65. 83 rectifier peak repetitive current?
  66. 813 Project has begun !
  67. C3G PX25 DRD - Will it work
  68. 6J5 (Metal Tubes) ....something goes around inside
  69. common-mode chokes
  70. EL-34 and 100k pot
  71. Scott 299 (late) OPT's
  72. Tube magazines
  73. PP plate-choke?
  74. More Phase Splitting Questions
  75. Concertina sanity check
  76. Transformer Specs
  77. The Aikido or Moskido??
  78. KT88 PP suggestion
  79. Ultrapath line amp
  80. Gross loudspeaker cone movement when using tube amps.
  81. Pre-amp power iron advice??
  82. Class A 8417 Amp
  83. DHT output tubes and DC heating
  84. rock music and SE?
  85. Disadvantages of using Zobel and Series notch filter ?
  86. old days source
  87. Mu-follower vs common cathode w/- active load
  88. K40 or K42 Russian PIO: what would you use/recommend?
  89. CCS turning off prematurely?
  90. ESL amp again!
  91. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  92. Does anyone know the output transformer specs of the...
  93. SE EL84 project for my friend
  94. SE amplifier - How much power?
  95. what speakers do you use?
  96. A Tube amp for a Hostille Tube Enviornment
  97. practical choice for an amp
  98. Simple cathode CCS
  99. 2A3s in push pull; class A
  100. 5 VDC heater question
  101. Power transformer snerring.
  102. Subminiature Tube & Tripath Hybrid Integrated
  103. 211
  104. Which of these output tubes?
  105. High Voltage Heater info
  106. 6SL7 in place of a 12AX7?
  107. DHT Tubes
  108. Driving 6AQ5's
  109. schematic wanted
  110. 807s replacing 6L6GCs
  111. Shielded vs twisted pair in internal wiring
  112. tube basics: computing mu and transconductance
  113. Aluminium vs steel chassis
  114. Etf06 & 07
  115. FU 13 tubes
  116. Good Souinding Direct Replacement For 325 / OP 37
  117. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  118. The Russian 5U4M is a 5AR4 equivalent ?
  119. WE427A Cold Cathode Diode
  120. reversing polarity in regulated B+ and other question
  121. Anthem Integrated 1
  122. Hickok 800 settings
  123. Advice/Help - Cap upgrade
  124. question on old tube sockets
  125. fisher sa-16 very red tube and?
  126. pros/cons of a 845 VS 211
  127. Preamp Power and Voltage Output
  128. Anyone seen these 6L6GCs before?
  129. online transformer info for newbies
  130. High voltage pseudo-triode
  131. Yes, again: mains-powered KILLER amp without a power transformer.
  132. Quicksilver 300b monoblock (KT88 conversion)
  133. Output transformer (SE) - DIY
  134. is Gary Pimm still around?
  135. carbon composition - 2 types
  136. Input attenuation on Leak amp
  137. 101D Sockets
  138. PC86, '88 RF Amplifiers
  139. Jolida SJ-302A tube swap
  140. Inductance for tweeter OPT
  141. Help me.......What is the 6SN7 ???????
  142. high DCR secondary (power transformer)
  143. Transformer power formula Help???
  144. 2A3 OTL 800 Ohm Speaker
  145. Trying to find specs on transformer core material
  146. 12AX7 suggestions?
  147. power supply (cap input)
  148. is it safe to connect these secondaries in series?
  149. Peter Millett's Uniamp with KT88
  150. Mystery transformer
  151. Can I phase split like this?
  152. How to model psud2 using tube regulator?
  153. Choke-loaded 6C33C stage
  154. EL84 as both driver and output stage.
  155. Silvertone (Sears) stereo amp
  156. Chasing hum in a new tube amp
  157. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  158. 6bx7gt Se Amp
  159. Beard P100 Bias Lights
  160. Metasonix TS-21 modulator
  161. help with diyparadiso schematics
  162. electrostatic shield - nice to have or recommended or doesn't matter?
  163. Simple method for 240V from 240V line
  164. Audiophile bibliophilia nervosa
  165. Help with amp layout
  166. Why triode Mk3 is louder than stock Mk3
  167. Seduction or Cornet for phono???
  168. Please review my 6AQ5 Amp
  169. 832A PP Amp LTP
  170. Checklist to observe before applying the mains
  171. C3g driving 2a3: Triode or pentode?
  172. psud2 question and Fi Primer's 211 circuit
  173. Jolida JD-301A & Jadis DPL
  174. Headphones with a Tube Amp
  175. 6S3B-V Wire-Ended Single-Triode tube
  176. Anode stoppers
  177. Weird Quad II mains transformer help
  178. Mullard 5-20 parts list
  179. has anyone DIYed a Citation 2?
  180. Bogen/plexi conversion question
  181. Matched pair - different brands
  182. ERIC Mod 3460P Restore
  183. PV12 Preamplifier
  184. Grandma's old Capitol Console
  185. Music Angel
  186. What is the version of 45
  187. Aikido for guitar?
  188. Heathkit potted power transformer question
  189. Thermionic Cooling?
  190. What have the finest sound, the PX4 or the 45 ?
  191. value of a cap between driver tube and output tubes
  192. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  193. Mini EL84 Amp Done
  194. Overcoming Miller
  195. Heathkit Schematic model AA-50 needed
  196. Help me choose please
  197. Mono Class A SE Schematics
  198. Irish DIY Meet.
  199. Sizing PP OPT
  200. 6BQ5/EL90 guitar amp schematics wanted
  201. Do SE transfomers get hot?
  202. Aikido Questions
  203. LTP with interstage trafo
  204. 6BQ5 Push-Pull amplifier
  205. Amplifier input
  206. C#@$ quality 6L6EH's
  207. Mains toroids appear to be great for audio
  208. High bias point.
  209. ebay amp
  210. GU 50 output modification
  211. 6C41Cs Class-A PP
  212. My First Big Amp
  213. sv572-10
  214. Stupid PAS-2 Pot Questions
  215. Old electronics articles
  216. UL Feedback
  217. who know fd23 and fd422 tubes?
  218. Laptop amplifier
  219. Thoughts Of Modifying My First Tube Amp.
  220. Quick question for Eli Duttman (or others!)
  221. Blackened GZ32 glass envelopes
  222. Are these vintage vacuum tubes suitable.....
  223. Tube XP8109-02?!
  224. peak current 300B heater with start up
  225. Microphonic phono preamplifier
  226. Pentode Plate Load
  227. what monoblocks to build?
  228. All tube direct box
  229. max b+ for 6V6
  230. What speakers to go with tubes ??
  231. Bluenote Koala Tube CD Player
  232. OPTs and power for bi-amping
  233. Quick And Dirty ~75W Guitar Amp
  234. Old Diodes
  235. Father, I abused my Leak S/20
  236. 6688/E180F line stage?
  237. Variable feedback to enhance damping factor at low frequency
  238. Need assistance with picking the right Edcor audio transformer
  239. Critique my first design
  240. Biamping, phase of output?
  241. Ground star
  242. op-points for 27 pre...?
  243. Opinions/Experience of Toroidal valve amps
  244. hum, no way to get rid of it
  245. How to adjust my circuit for frequency response?
  246. Input Tubes?
  247. 6BG6 = 6L6GC with top cap - cheap!
  248. Maida Regulators Redux
  249. ground of DC bias supply
  250. does anyone the website for yaqin/mr. liung/music angel amps?

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