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

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