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  1. PP amp using 6p15P
  2. Time for another round of "Criticise my Circuit"... err..I mean
  3. Adding a parallel feed on DRD
  4. How hot can resistor stands?
  5. Hybrid amplifier A2 class
  6. Diodes on power supply output for voltage drop?
  7. Converting from single ended parafeed to differential
  8. micro-amp SE with 2,5k OPT+
  9. Unknown Tube Amp
  10. Aikido AC Heater Supply
  11. Help me find some odd looking rectifiers!
  12. So, you may have been wondering...(813 Content !)
  13. Just sharing my 26 experience last night...
  14. Simple 5842-45 SET Amp Design Idea
  15. Yamamoto teflon sockets
  16. new thread, 6BM8 PP build begins...
  17. KT88 Heater Current
  18. 150V plate output tubes
  19. Newbie need to help
  20. Help me please
  21. Elekit TU-870 help
  22. Looking for schematic of Audible Illusion Modulus 3A preamp
  23. Junker Box amp
  24. aikido hybrid with 5 A bias
  25. Shall we compile a list?
  26. drift in direct coupled tubes
  27. Hammond 2XX vs 3XX Power Tranny Questions
  28. Help with this transformer please...
  29. Capacitor upgrade in Paragon 12A
  30. Light bulbs as cathode resistors?
  31. Favorite Threads and Posts in "Tubes" Forum
  32. I need 12v DC- whats the best option?
  33. Beard P35 and Tubes Replacement
  34. Graphic 1/3 Octave Tube Equaliser
  35. GE "Dual Speaker" radio to Harmony H303 conversion : Help, please?
  36. Power Supply Design
  37. Gomes amp
  38. pignose g40v power transformer
  39. Grid battery biased SE output stages
  40. KT88 amp schematic/parts list
  41. Wire Wrap connections for point to point
  42. Aikido Tubes
  43. Recommended tubes for AI Modulus 3A, C-J MV55 and Moscode 300
  44. Schematic Question
  45. EL34 as triode?
  46. Linestage Questions
  47. Help! Building Jax's HFTA
  48. Gobs of AC on ISCO 494
  49. Change step up ratio of input transformer?
  50. LCR RIAA rebuild
  51. common mode choke question
  52. Choosing Choke
  53. Input impedance
  54. Hey Tubelab, Transformer Question
  55. Hybrid Rectifier Check Please !
  56. 1st tube project, tubalizer?
  57. 1st Time project - Report 1
  58. ED-8000 set amp
  59. Hitachi v-202 scope
  60. Cheap and nice looking SE OPT
  61. How much difference 0.22 vs 0.33 cap?
  62. Tubelab SimpleSE
  63. 813 final design?
  64. HPHV regulator, designed by Emile Sprenger
  65. Counterpoint tube amps
  66. SS or tube voltage amplifying stages in an amp with tube output?
  67. 24V Aikido --> 6GM8 with Buffer
  68. Motorboating in Dynaco ST-70
  69. Does such a tube exist?
  70. Noisy PSU?
  71. Bell & Howell amp
  72. Valve Amp with soild state front end
  73. Controlling transient response
  74. Transcendar Budget SE Transformers
  75. Opinion on New Sensor 6SN7GTB?
  76. Determining optimal OT turns ratio
  77. Splitting up the Power Amp
  78. Sowter 5113
  79. Cascoded 6N6P
  80. MachMat or Tentlabs Heater Supply for 300B
  81. Common mode filtering for heater supplies.
  82. Distortion.
  83. 83 rectifier peak repetitive current?
  84. 813 Project has begun !
  85. C3G PX25 DRD - Will it work
  86. 6J5 (Metal Tubes) ....something goes around inside
  87. common-mode chokes
  88. EL-34 and 100k pot
  89. Scott 299 (late) OPT's
  90. Tube magazines
  91. PP plate-choke?
  92. More Phase Splitting Questions
  93. Concertina sanity check
  94. Transformer Specs
  95. The Aikido or Moskido??
  96. KT88 PP suggestion
  97. Ultrapath line amp
  98. Gross loudspeaker cone movement when using tube amps.
  99. Pre-amp power iron advice??
  100. Class A 8417 Amp
  101. DHT output tubes and DC heating
  102. rock music and SE?
  103. Disadvantages of using Zobel and Series notch filter ?
  104. old days source
  105. Mu-follower vs common cathode w/- active load
  106. K40 or K42 Russian PIO: what would you use/recommend?
  107. CCS turning off prematurely?
  108. ESL amp again!
  109. calling Moray James, and others ..wav8 or 6BM8 schemtics--PP.
  110. Does anyone know the output transformer specs of the...
  111. SE EL84 project for my friend
  112. SE amplifier - How much power?
  113. what speakers do you use?
  114. A Tube amp for a Hostille Tube Enviornment
  115. practical choice for an amp
  116. Simple cathode CCS
  117. 2A3s in push pull; class A
  118. 5 VDC heater question
  119. Power transformer snerring.
  120. Subminiature Tube & Tripath Hybrid Integrated
  121. 211
  122. Which of these output tubes?
  123. High Voltage Heater info
  124. 6SL7 in place of a 12AX7?
  125. DHT Tubes
  126. Driving 6AQ5's
  127. schematic wanted
  128. 807s replacing 6L6GCs
  129. Shielded vs twisted pair in internal wiring
  130. tube basics: computing mu and transconductance
  131. Aluminium vs steel chassis
  132. Etf06 & 07
  133. FU 13 tubes
  134. Good Souinding Direct Replacement For 325 / OP 37
  135. how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)?
  136. The Russian 5U4M is a 5AR4 equivalent ?
  137. WE427A Cold Cathode Diode
  138. reversing polarity in regulated B+ and other question
  139. Anthem Integrated 1
  140. Hickok 800 settings
  141. Advice/Help - Cap upgrade
  142. question on old tube sockets
  143. fisher sa-16 very red tube and?
  144. pros/cons of a 845 VS 211
  145. Preamp Power and Voltage Output
  146. Anyone seen these 6L6GCs before?
  147. online transformer info for newbies
  148. High voltage pseudo-triode
  149. Yes, again: mains-powered KILLER amp without a power transformer.
  150. Quicksilver 300b monoblock (KT88 conversion)
  151. Output transformer (SE) - DIY
  152. is Gary Pimm still around?
  153. carbon composition - 2 types
  154. Input attenuation on Leak amp
  155. 101D Sockets
  156. PC86, '88 RF Amplifiers
  157. Jolida SJ-302A tube swap
  158. Inductance for tweeter OPT
  159. Help me.......What is the 6SN7 ???????
  160. high DCR secondary (power transformer)
  161. Transformer power formula Help???
  162. 2A3 OTL 800 Ohm Speaker
  163. Trying to find specs on transformer core material
  164. 12AX7 suggestions?
  165. power supply (cap input)
  166. is it safe to connect these secondaries in series?
  167. Peter Millett's Uniamp with KT88
  168. Mystery transformer
  169. Can I phase split like this?
  170. How to model psud2 using tube regulator?
  171. Choke-loaded 6C33C stage
  172. EL84 as both driver and output stage.
  173. Silvertone (Sears) stereo amp
  174. Chasing hum in a new tube amp
  175. Zenith K731 AM/FM radio audio random cracking sound in FM mode
  176. 6bx7gt Se Amp
  177. Beard P100 Bias Lights
  178. Metasonix TS-21 modulator
  179. help with diyparadiso schematics
  180. electrostatic shield - nice to have or recommended or doesn't matter?
  181. Simple method for 240V from 240V line
  182. Audiophile bibliophilia nervosa
  183. Help with amp layout
  184. Why triode Mk3 is louder than stock Mk3
  185. Seduction or Cornet for phono???
  186. Please review my 6AQ5 Amp
  187. 832A PP Amp LTP
  188. Checklist to observe before applying the mains
  189. C3g driving 2a3: Triode or pentode?
  190. psud2 question and Fi Primer's 211 circuit
  191. Jolida JD-301A & Jadis DPL
  192. Headphones with a Tube Amp
  193. 6S3B-V Wire-Ended Single-Triode tube
  194. Anode stoppers
  195. Weird Quad II mains transformer help
  196. Mullard 5-20 parts list
  197. has anyone DIYed a Citation 2?
  198. Bogen/plexi conversion question
  199. Matched pair - different brands
  200. ERIC Mod 3460P Restore
  201. PV12 Preamplifier
  202. Grandma's old Capitol Console
  203. Music Angel
  204. What is the version of 45
  205. Aikido for guitar?
  206. Heathkit potted power transformer question
  207. Thermionic Cooling?
  208. What have the finest sound, the PX4 or the 45 ?
  209. value of a cap between driver tube and output tubes
  210. do matched pair (or maybe a quad) output tubes "aged" at the same rate?
  211. Mini EL84 Amp Done
  212. Overcoming Miller
  213. Heathkit Schematic model AA-50 needed
  214. Help me choose please
  215. Mono Class A SE Schematics
  216. Irish DIY Meet.
  217. Sizing PP OPT
  218. 6BQ5/EL90 guitar amp schematics wanted
  219. Do SE transfomers get hot?
  220. Aikido Questions
  221. LTP with interstage trafo
  222. 6BQ5 Push-Pull amplifier
  223. Amplifier input
  224. C#@$ quality 6L6EH's
  225. Mains toroids appear to be great for audio
  226. High bias point.
  227. ebay amp
  228. GU 50 output modification
  229. 6C41Cs Class-A PP
  230. My First Big Amp
  231. sv572-10
  232. Stupid PAS-2 Pot Questions
  233. Old electronics articles
  234. UL Feedback
  235. who know fd23 and fd422 tubes?
  236. Laptop amplifier
  237. Thoughts Of Modifying My First Tube Amp.
  238. Quick question for Eli Duttman (or others!)
  239. Blackened GZ32 glass envelopes
  240. Are these vintage vacuum tubes suitable.....
  241. Tube XP8109-02?!
  242. peak current 300B heater with start up
  243. Microphonic phono preamplifier
  244. Pentode Plate Load
  245. what monoblocks to build?
  246. All tube direct box
  247. max b+ for 6V6
  248. What speakers to go with tubes ??
  249. Bluenote Koala Tube CD Player
  250. OPTs and power for bi-amping

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