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  1. A question about diodes...
  2. 5R4WGY/A/B , input filter capacitors
  3. attenuator hook up?
  4. best material for mounting tubes sideways
  5. Amp suggestions needed
  6. CC vs EI I mean toroids are out of question
  7. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  8. Inviting Comment on Schematic
  9. SE 2A3 input stage
  10. DIY Tube Amp Questions
  11. Need tube buffer circuit for sub-woofer out
  12. How to connect electrostatic shield of power transformer?
  13. Your favourite filament supply for DHT's?
  14. Quantum Impex
  15. Channel Switching Real McTube?
  16. so who owns a dac5 or m8 phono
  17. OPT at frequency extremes
  18. Parafeed with resistive load
  19. EL34 SE triode mode A class sch wanted
  20. Dumont (where theres smoke theres sound)
  21. HYBRID- Schematic
  22. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  23. sovtek 300B
  24. 12au6 preamp
  25. Engineering Drawings PCB Mount Tube Sockets
  26. Help with a choke for first-time DIY...
  27. Power SRPP
  28. Anode Loading Vs. Cathode Loading ?
  29. Purist 2 Line Amp
  30. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  31. radio receiver
  32. Pioneer SM83 and 500k pot
  33. How many ways to connect a pentode...
  34. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  35. Any pitfalls to tapping voltage doubler?
  36. 5k to 100 or so line transformers
  37. Ongaku 211 and Supravox 215
  38. Help with 6B4G PP amp.
  39. Help me build my Choke I/P preamp PSU
  40. Pinging "DoomPixie"
  41. 6L6 mono amp questions
  42. Help on 300B power trans...
  43. Spud Farmin' Pt. Deux
  44. No Zen
  45. Reuse or rewind choke
  46. Bell Sound Mono Integrated Amplifier
  47. Help with Melos SHA repair
  48. Phase splitter transformers
  49. 6v6 schems
  50. Cathode feedback
  51. Is this a good choice for El34 PP
  52. 6DK6 amp schematics?
  53. so who here builds amps
  54. 3:1 Line Input X-former ?
  55. * 35 watt * 300B SE = super 300B + Class A2
  56. Quirk in Mullard 5-20 circuit
  57. LL1673 as anode load?
  58. preamp/power amp matching
  59. 0A3 and pentode questions (quickie)
  60. where to find transformer to use
  61. C core output design
  62. Unusual Motorola Console
  63. Improving the Aikido line stage...
  64. Poll..anyone interested in an Aikido linestage PCB group buy?
  65. New 6s45p compare to NOS?
  66. Elektra Print L-3500
  67. 300b tube cage
  68. The 'Tater Patch
  69. 2A3 Sovtek characteristics
  70. 300b filament q, yes another one.
  71. Amp repair help needed.
  72. 833a SE Peak A.F. Grid Voltage
  73. DHP driver for 845
  74. Fisher 55-a
  75. Ultralinear Miller capacitance
  76. Simplest OTL?
  77. presence control
  78. Black Gate N cathode formation voltage
  79. Any other reported fragility for 6H30pi?
  80. Help! circuit diagram
  81. Another Gm70 amp !!
  82. 833a Amp 75W SE
  83. Black Gate N-series question
  84. 300B+
  85. Koren's spice models
  86. 50 Power triode
  87. Vertical deflection tubes for audio output?
  88. warmth in different tube types
  89. OT data
  90. Sansui 1000A OPT's
  91. CF biasing and load ???s
  92. improving the Mcintosh C22
  93. An amp that melts 6L6s?
  94. 8ohm speaker on 15 or 3.5 ohm tranny
  95. Choosing a brand as a standard
  96. The power of transformation
  97. wanted- 845 pwr amp p.p.
  98. Heathkit S-33 Information needed.
  99. Leak Stereo 20 - solid state rectifier?
  100. My rebuild 6sn7gt tubes line pre-amp.
  101. CircuitMaker Vacuum Tube model
  102. Mf X-pre
  103. E182CC, E88CC SRPP at low voltage
  104. Debugging my Aikido
  105. SRPP linestage help
  106. Transformer question
  107. Tube Spice Model Problem
  108. Just found a zenith 7g01z in the basement
  109. your next level story - Philosophy of EE 101
  110. JLTI Tube Preamp
  111. squeal in amplifier
  112. ALTEC Line & Bridging Transformer Data??
  113. Tube noob needs some help on PSU
  114. Preamp PSU Design Help
  115. GZ37 Substitution?
  116. help disigning 12AY7 based mic pre
  117. I m confuse ! expert help
  118. Removing a pot.
  119. diyparadiso kits?
  120. Help with linestage power supply
  121. TX103 - RJM 6DJ8 - TX102 preamp
  122. Replace the field coil spk with Electromagnetic dynamic spk
  123. Gu50 output problems
  124. SRPP: adifferent perspective
  125. Fixed or self bias?
  126. 211 amp PSU question
  127. Help! transformer overheating!
  128. more ebay stuff
  129. 6KG6, output stage & PSpice
  130. 6C33C-B Failure Mode?
  131. manley 300b preamp schematic required
  132. 115 V transformer on 230 V ???
  133. Hoffman Amps Turret Lugs?
  134. 300B Reliablity
  135. Metal work in Toronto
  136. What happens when you starve a heater?
  137. se 6c33c or se el34 schematic
  138. AVO MkIV User Guide
  139. Altec A150C and 531B psu
  140. What's been broken?
  141. tubes here...
  142. Voltage drop AZ1 = AZ11 = RGN1064 rectifier tube
  143. The Beast...
  144. Looking for Mikael's KT88 Schematic
  145. 1.2k vs 2.5k TC on a 6550 amp?
  146. Ultimate Tube head phone amp.
  147. Selecting Output Transformers for My WOT Line Preamp
  148. Tube microphone
  149. OP tube convertible PP amps?
  150. The "Valvolozzo" - SE amp with torroids
  151. Phase Splitters
  152. A new setup, advice wanted
  153. 6e2 Magic eye datasheet
  154. Another linestage......
  155. VT52: are the triode and pentode alike?
  156. Long term planning
  157. vintage restoration
  158. Some doubt about my first Tube amp (Heater).
  159. Power supply for Single Ended Amplifier
  160. Another CD player DAC tube modification
  161. philips el6400 tubeamp
  162. NTE Metal Film Resistors?
  163. How much power do I really need?
  164. 6H30 phono with passive RIAA
  165. I need help troubleshooting a EL84 push pull amp.
  166. Tube Data needed please
  167. Filament Transformer
  168. strange tube
  169. 12AX7 and 12AT7 numerical data
  170. DC/DC converter to power tube amp?
  171. Basic Cathode Follower buffer
  172. Help me!!! I need schematic of Pow-Amp using 6V6
  173. gi30, se pentode?
  174. Any experience with Chinese 6N8P
  175. Source for common mode chokes
  176. Low Power FM stereo transmitter?
  177. Rh807
  178. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  179. Question about sub out on amp
  180. opt question
  181. Tube socket wanted. (help where)
  182. voltage regulator using ECL84 + OB2
  183. Help! 6sn7GT
  184. tubes n needles
  185. PSpice/LTSpice model for 6AU6/EF94?
  186. 5AR4/GZ34 GT Britain
  187. CCS vs mu-follower. What's the difference?
  188. Need advice on two preamp kits.
  189. My First Tube Amplifier
  190. Output (beam) pentodes / tetrodes suitable for screen grid drive
  191. Patent applications of interest
  192. Rca
  193. Melos GK-1 Tube Pre-amp Schematic needed ...
  194. 6L6s and 6AR6s - what can I do with them?
  195. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  196. 1600v HT supply for scope.
  197. Mc 275 CE schema
  198. Help! is this work?
  199. Some questons on a DIY system.
  200. pinout on 6GT5A tube
  201. 50Hz hum after increasing grid stopper
  202. A Heretical Unity Gain Line Stage part II
  203. 832A Push Pull 5W
  204. PSpice/LTSpice model for 12AY7/6072 wanted
  205. Is this circuit I drew ok?
  206. Suggest a preamp for cd/tuner
  207. EL84 to 6l6
  208. Tube-cad, is it worth the $40?
  209. Grounded Grid Preamp Project And Possible Group PCB Buy
  210. Can anyone sujest a good operating point for the PL84
  211. Preamp hiss noise
  212. Audio Note Trans 205 specs?
  213. Help translating russian tube datasheet
  214. Very high output level!
  215. Help wanted with valve data
  216. Boiling sound...
  217. Negative Feedback Ground
  218. low power SE with 813
  219. KT instead EL
  220. a single double triode and two chanel?
  221. 76 driving 211?
  222. My Experience with "Music Angel" EL34 PP
  223. 12JT6 in triode mode curves needed
  224. Where did these EL84 numbers come from?
  225. int. low signal
  226. FFT analysis-Truth or Consequence
  227. 6sn7gtb Filament Voltage
  228. Help with Tube Buffer for passive pre
  229. Is there a 12CM7?
  230. 12ax7
  231. tube driving the same tube - whats the collective word?
  232. 6c33c PSE
  233. 75% of rated max. current too high?
  234. ST shaped tube
  235. Tube Phono Pre of RJM
  236. how to determine P1 from P2 of a Push-pull transformer?
  237. fisher x100a
  238. Please review EL84M PP design before I order parts.
  239. Auction Gem Motorola? Go Figure!
  240. Darling amp plate voltage
  241. Sound quality of 6C4C is same with 2A3?
  242. 6,3VAC to 6,3VDC
  243. EL84 push pull idea
  244. Marantz preamp clone for newbie?
  245. Can I use Philips TB2.5 /400 in a SE ampl.
  246. Microwave + Computer = Tube? [help!]
  247. Oil Capacitor DC vs. AC Voltage Rating
  248. Plate Choke Miller Capacitance
  249. Anyone interested in building an EAR 834P?
  250. tube pre-amp

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