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  1. Inviting Comment on Schematic
  2. SE 2A3 input stage
  3. DIY Tube Amp Questions
  4. Need tube buffer circuit for sub-woofer out
  5. How to connect electrostatic shield of power transformer?
  6. Your favourite filament supply for DHT's?
  7. Quantum Impex
  8. Channel Switching Real McTube?
  9. so who owns a dac5 or m8 phono
  10. OPT at frequency extremes
  11. Parafeed with resistive load
  12. EL34 SE triode mode A class sch wanted
  13. Dumont (where theres smoke theres sound)
  14. HYBRID- Schematic
  15. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  16. sovtek 300B
  17. 12au6 preamp
  18. Engineering Drawings PCB Mount Tube Sockets
  19. Help with a choke for first-time DIY...
  20. Power SRPP
  21. Anode Loading Vs. Cathode Loading ?
  22. Purist 2 Line Amp
  23. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  24. radio receiver
  25. Help Vintage Guitar Hummer
  26. Pioneer SM83 and 500k pot
  27. How many ways to connect a pentode...
  28. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  29. Any pitfalls to tapping voltage doubler?
  30. 5k to 100 or so line transformers
  31. Ongaku 211 and Supravox 215
  32. Help with 6B4G PP amp.
  33. Help me build my Choke I/P preamp PSU
  34. Pinging "DoomPixie"
  35. 6L6 mono amp questions
  36. Help on 300B power trans...
  37. Spud Farmin' Pt. Deux
  38. No Zen
  39. Reuse or rewind choke
  40. Bell Sound Mono Integrated Amplifier
  41. Help with Melos SHA repair
  42. diy guitar tube amp help.
  43. Phase splitter transformers
  44. 6v6 schems
  45. Cathode feedback
  46. Is this a good choice for El34 PP
  47. 6DK6 amp schematics?
  48. so who here builds amps
  49. 3:1 Line Input X-former ?
  50. * 35 watt * 300B SE = super 300B + Class A2
  51. Quirk in Mullard 5-20 circuit
  52. LL1673 as anode load?
  53. preamp/power amp matching
  54. 0A3 and pentode questions (quickie)
  55. where to find transformer to use
  56. C core output design
  57. Unusual Motorola Console
  58. Improving the Aikido line stage...
  59. Poll..anyone interested in an Aikido linestage PCB group buy?
  60. New 6s45p compare to NOS?
  61. Elektra Print L-3500
  62. 300b tube cage
  63. The 'Tater Patch
  64. 2A3 Sovtek characteristics
  65. 300b filament q, yes another one.
  66. Amp repair help needed.
  67. 833a SE Peak A.F. Grid Voltage
  68. DHP driver for 845
  69. Fisher 55-a
  70. Ultralinear Miller capacitance
  71. Simplest OTL?
  72. presence control
  73. Black Gate N cathode formation voltage
  74. Any other reported fragility for 6H30pi?
  75. Help! circuit diagram
  76. Another Gm70 amp !!
  77. 833a Amp 75W SE
  78. Black Gate N-series question
  79. 300B+
  80. Koren's spice models
  81. 50 Power triode
  82. Vertical deflection tubes for audio output?
  83. warmth in different tube types
  84. OT data
  85. Sansui 1000A OPT's
  86. CF biasing and load ???s
  87. improving the Mcintosh C22
  88. An amp that melts 6L6s?
  89. 8ohm speaker on 15 or 3.5 ohm tranny
  90. Choosing a brand as a standard
  91. The power of transformation
  92. wanted- 845 pwr amp p.p.
  93. Heathkit S-33 Information needed.
  94. Leak Stereo 20 - solid state rectifier?
  95. My rebuild 6sn7gt tubes line pre-amp.
  96. CircuitMaker Vacuum Tube model
  97. Mf X-pre
  98. E182CC, E88CC SRPP at low voltage
  99. Debugging my Aikido
  100. SRPP linestage help
  101. Transformer question
  102. Tube Spice Model Problem
  103. Just found a zenith 7g01z in the basement
  104. your next level story - Philosophy of EE 101
  105. JLTI Tube Preamp
  106. squeal in amplifier
  107. ALTEC Line & Bridging Transformer Data??
  108. Tube noob needs some help on PSU
  109. Preamp PSU Design Help
  110. GZ37 Substitution?
  111. help disigning 12AY7 based mic pre
  112. I m confuse ! expert help
  113. Removing a pot.
  114. diyparadiso kits?
  115. Help with linestage power supply
  116. TX103 - RJM 6DJ8 - TX102 preamp
  117. Replace the field coil spk with Electromagnetic dynamic spk
  118. Gu50 output problems
  119. SRPP: adifferent perspective
  120. Fixed or self bias?
  121. 211 amp PSU question
  122. Help! transformer overheating!
  123. more ebay stuff
  124. 6KG6, output stage & PSpice
  125. 6C33C-B Failure Mode?
  126. manley 300b preamp schematic required
  127. 115 V transformer on 230 V ???
  128. Hoffman Amps Turret Lugs?
  129. 300B Reliablity
  130. Metal work in Toronto
  131. What happens when you starve a heater?
  132. se 6c33c or se el34 schematic
  133. AVO MkIV User Guide
  134. Altec A150C and 531B psu
  135. What's been broken?
  136. tubes here...
  137. Voltage drop AZ1 = AZ11 = RGN1064 rectifier tube
  138. The Beast...
  139. Looking for Mikael's KT88 Schematic
  140. 1.2k vs 2.5k TC on a 6550 amp?
  141. Ultimate Tube head phone amp.
  142. Selecting Output Transformers for My WOT Line Preamp
  143. Tube microphone
  144. OP tube convertible PP amps?
  145. The "Valvolozzo" - SE amp with torroids
  146. Phase Splitters
  147. A new setup, advice wanted
  148. 6e2 Magic eye datasheet
  149. Another linestage......
  150. VT52: are the triode and pentode alike?
  151. Long term planning
  152. vintage restoration
  153. Some doubt about my first Tube amp (Heater).
  154. Power supply for Single Ended Amplifier
  155. Another CD player DAC tube modification
  156. philips el6400 tubeamp
  157. NTE Metal Film Resistors?
  158. How much power do I really need?
  159. hey guitar playas, try this one!
  160. 6H30 phono with passive RIAA
  161. I need help troubleshooting a EL84 push pull amp.
  162. Tube Data needed please
  163. Filament Transformer
  164. strange tube
  165. 12AX7 and 12AT7 numerical data
  166. DC/DC converter to power tube amp?
  167. Basic Cathode Follower buffer
  168. Marshall EL84 20/20 schematic needed
  169. Help me!!! I need schematic of Pow-Amp using 6V6
  170. gi30, se pentode?
  171. Any experience with Chinese 6N8P
  172. Source for common mode chokes
  173. Low Power FM stereo transmitter?
  174. Rh807
  175. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  176. Question about sub out on amp
  177. opt question
  178. Tube socket wanted. (help where)
  179. voltage regulator using ECL84 + OB2
  180. Help! 6sn7GT
  181. tubes n needles
  182. PSpice/LTSpice model for 6AU6/EF94?
  183. 5AR4/GZ34 GT Britain
  184. CCS vs mu-follower. What's the difference?
  185. Need advice on two preamp kits.
  186. My First Tube Amplifier
  187. Output (beam) pentodes / tetrodes suitable for screen grid drive
  188. Patent applications of interest
  189. Rca
  190. Guitar Amps
  191. Melos GK-1 Tube Pre-amp Schematic needed ...
  192. 6L6s and 6AR6s - what can I do with them?
  193. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  194. 1600v HT supply for scope.
  195. Mc 275 CE schema
  196. Help! is this work?
  197. Some questons on a DIY system.
  198. pinout on 6GT5A tube
  199. 50Hz hum after increasing grid stopper
  200. A Heretical Unity Gain Line Stage part II
  201. 832A Push Pull 5W
  202. PSpice/LTSpice model for 12AY7/6072 wanted
  203. Is this circuit I drew ok?
  204. Suggest a preamp for cd/tuner
  205. EL84 to 6l6
  206. Tube-cad, is it worth the $40?
  207. Grounded Grid Preamp Project And Possible Group PCB Buy
  208. Can anyone sujest a good operating point for the PL84
  209. Preamp hiss noise
  210. Audio Note Trans 205 specs?
  211. Help translating russian tube datasheet
  212. Very high output level!
  213. Help wanted with valve data
  214. Boiling sound...
  215. Negative Feedback Ground
  216. low power SE with 813
  217. KT instead EL
  218. a single double triode and two chanel?
  219. 76 driving 211?
  220. My Experience with "Music Angel" EL34 PP
  221. 12JT6 in triode mode curves needed
  222. Where did these EL84 numbers come from?
  223. int. low signal
  224. FFT analysis-Truth or Consequence
  225. 6sn7gtb Filament Voltage
  226. Help with Tube Buffer for passive pre
  227. Is there a 12CM7?
  228. 12ax7
  229. tube driving the same tube - whats the collective word?
  230. 6c33c PSE
  231. 75% of rated max. current too high?
  232. ST shaped tube
  233. Tube Phono Pre of RJM
  234. how to determine P1 from P2 of a Push-pull transformer?
  235. fisher x100a
  236. Please review EL84M PP design before I order parts.
  237. Auction Gem Motorola? Go Figure!
  238. Darling amp plate voltage
  239. Sound quality of 6C4C is same with 2A3?
  240. 6,3VAC to 6,3VDC
  241. EL84 push pull idea
  242. Marantz preamp clone for newbie?
  243. Can I use Philips TB2.5 /400 in a SE ampl.
  244. Microwave + Computer = Tube? [help!]
  245. Oil Capacitor DC vs. AC Voltage Rating
  246. Plate Choke Miller Capacitance
  247. Anyone interested in building an EAR 834P?
  248. tube pre-amp
  249. Choke For Supply B+ Diy
  250. Audio Note DAC4 SRPP output stage problems!

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