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  1. Grid Input Transformers
  2. Aikido Power Supply
  3. ralph power pp amp with 807 ?
  4. fender clone, 6SJ7 vs. 6SN7
  5. tube stores in moscow
  6. 211 and 845
  7. Need help with amp
  8. Altec 1570B
  9. UL to triode
  10. How can I improve this tube amp (see pics)?
  11. klimo merlin preamp sch wanted
  12. CCS question
  13. *****es brew step 2 ... or grid bias ... how to?
  14. Filaments for the Aikido
  15. RE: RC-19 or RC-30
  16. My experience building a DRD d3A/300B amp
  17. TIP50 + LM317 High Voltage Regulator
  18. Any info on old "Cosmos" amp'?
  19. What more do I need to know?
  20. EBAY Find Of The Year Club LOL
  21. Partial feedback DHP SE amp
  22. newbie question
  23. Tube 1616
  24. Class A tube integrated circuit request
  25. Global Feedback Source Point
  26. These look interesting for that SE project
  27. Phillips AG9008 amp - looking for diagram
  28. 3cx3000
  29. EL86 and speakers? 800 Ohm
  30. Looking for CAT SL-1 Schematic
  31. el84 - 807 ?
  32. Low-voltage Tubebuffer by David Lin
  33. changing diodes with 5AR4 tubes
  34. 801 amp PS
  35. what can I do with these tubes?
  36. How to 'fine tune' your amps?
  37. Otl
  38. Rogers E40a schematic?
  39. Peavey Triple X Rewire! Help!
  40. Butler Monad A 100
  41. Using the UTC LS-33 as a Push-Pull output for 2A3's
  42. 2A3 AC filament hum
  43. A question about diodes...
  44. 5R4WGY/A/B , input filter capacitors
  45. attenuator hook up?
  46. best material for mounting tubes sideways
  47. Amp suggestions needed
  48. CC vs EI I mean toroids are out of question
  49. Newbie need help in designing tube preamp for my 3886 GC??Please Help me!!
  50. Inviting Comment on Schematic
  51. SE 2A3 input stage
  52. DIY Tube Amp Questions
  53. Need tube buffer circuit for sub-woofer out
  54. How to connect electrostatic shield of power transformer?
  55. Your favourite filament supply for DHT's?
  56. Quantum Impex
  57. Channel Switching Real McTube?
  58. so who owns a dac5 or m8 phono
  59. OPT at frequency extremes
  60. Parafeed with resistive load
  61. EL34 SE triode mode A class sch wanted
  62. Dumont (where theres smoke theres sound)
  63. HYBRID- Schematic
  64. I have a pair of JBL control 5 speakers, which valve amp design you recommend?
  65. sovtek 300B
  66. 12au6 preamp
  67. Engineering Drawings PCB Mount Tube Sockets
  68. Help with a choke for first-time DIY...
  69. Power SRPP
  70. Anode Loading Vs. Cathode Loading ?
  71. Purist 2 Line Amp
  72. Yet Another "EURIDICE" Pre Amp, 4CH This Time
  73. radio receiver
  74. Help Vintage Guitar Hummer
  75. Pioneer SM83 and 500k pot
  76. How many ways to connect a pentode...
  77. How do I go about repairing a vintage Pilotone AA-410A monoblock tube amp?
  78. Any pitfalls to tapping voltage doubler?
  79. 5k to 100 or so line transformers
  80. Ongaku 211 and Supravox 215
  81. Help with 6B4G PP amp.
  82. Help me build my Choke I/P preamp PSU
  83. Pinging "DoomPixie"
  84. 6L6 mono amp questions
  85. Help on 300B power trans...
  86. Spud Farmin' Pt. Deux
  87. No Zen
  88. Reuse or rewind choke
  89. Bell Sound Mono Integrated Amplifier
  90. Help with Melos SHA repair
  91. diy guitar tube amp help.
  92. Phase splitter transformers
  93. 6v6 schems
  94. Cathode feedback
  95. Is this a good choice for El34 PP
  96. 6DK6 amp schematics?
  97. so who here builds amps
  98. 3:1 Line Input X-former ?
  99. * 35 watt * 300B SE = super 300B + Class A2
  100. Quirk in Mullard 5-20 circuit
  101. LL1673 as anode load?
  102. preamp/power amp matching
  103. 0A3 and pentode questions (quickie)
  104. where to find transformer to use
  105. C core output design
  106. Unusual Motorola Console
  107. Improving the Aikido line stage...
  108. Poll..anyone interested in an Aikido linestage PCB group buy?
  109. New 6s45p compare to NOS?
  110. Elektra Print L-3500
  111. 300b tube cage
  112. The 'Tater Patch
  113. 2A3 Sovtek characteristics
  114. 300b filament q, yes another one.
  115. Amp repair help needed.
  116. 833a SE Peak A.F. Grid Voltage
  117. DHP driver for 845
  118. Fisher 55-a
  119. Ultralinear Miller capacitance
  120. Simplest OTL?
  121. presence control
  122. Black Gate N cathode formation voltage
  123. Any other reported fragility for 6H30pi?
  124. Help! circuit diagram
  125. Another Gm70 amp !!
  126. 833a Amp 75W SE
  127. Black Gate N-series question
  128. 300B+
  129. Koren's spice models
  130. 50 Power triode
  131. Vertical deflection tubes for audio output?
  132. warmth in different tube types
  133. OT data
  134. Sansui 1000A OPT's
  135. CF biasing and load ???s
  136. improving the Mcintosh C22
  137. An amp that melts 6L6s?
  138. 8ohm speaker on 15 or 3.5 ohm tranny
  139. Choosing a brand as a standard
  140. The power of transformation
  141. wanted- 845 pwr amp p.p.
  142. Heathkit S-33 Information needed.
  143. Leak Stereo 20 - solid state rectifier?
  144. My rebuild 6sn7gt tubes line pre-amp.
  145. CircuitMaker Vacuum Tube model
  146. Mf X-pre
  147. E182CC, E88CC SRPP at low voltage
  148. Debugging my Aikido
  149. SRPP linestage help
  150. Transformer question
  151. Tube Spice Model Problem
  152. Just found a zenith 7g01z in the basement
  153. your next level story - Philosophy of EE 101
  154. JLTI Tube Preamp
  155. squeal in amplifier
  156. ALTEC Line & Bridging Transformer Data??
  157. Tube noob needs some help on PSU
  158. Preamp PSU Design Help
  159. GZ37 Substitution?
  160. help disigning 12AY7 based mic pre
  161. I m confuse ! expert help
  162. Removing a pot.
  163. diyparadiso kits?
  164. Help with linestage power supply
  165. TX103 - RJM 6DJ8 - TX102 preamp
  166. Replace the field coil spk with Electromagnetic dynamic spk
  167. Gu50 output problems
  168. SRPP: adifferent perspective
  169. Fixed or self bias?
  170. 211 amp PSU question
  171. Help! transformer overheating!
  172. more ebay stuff
  173. 6KG6, output stage & PSpice
  174. 6C33C-B Failure Mode?
  175. manley 300b preamp schematic required
  176. 115 V transformer on 230 V ???
  177. Hoffman Amps Turret Lugs?
  178. 300B Reliablity
  179. Metal work in Toronto
  180. What happens when you starve a heater?
  181. se 6c33c or se el34 schematic
  182. AVO MkIV User Guide
  183. Altec A150C and 531B psu
  184. What's been broken?
  185. tubes here...
  186. Voltage drop AZ1 = AZ11 = RGN1064 rectifier tube
  187. The Beast...
  188. Looking for Mikael's KT88 Schematic
  189. 1.2k vs 2.5k TC on a 6550 amp?
  190. Ultimate Tube head phone amp.
  191. Selecting Output Transformers for My WOT Line Preamp
  192. Tube microphone
  193. OP tube convertible PP amps?
  194. The "Valvolozzo" - SE amp with torroids
  195. Phase Splitters
  196. A new setup, advice wanted
  197. 6e2 Magic eye datasheet
  198. Another linestage......
  199. VT52: are the triode and pentode alike?
  200. Long term planning
  201. vintage restoration
  202. Some doubt about my first Tube amp (Heater).
  203. Power supply for Single Ended Amplifier
  204. Another CD player DAC tube modification
  205. philips el6400 tubeamp
  206. NTE Metal Film Resistors?
  207. How much power do I really need?
  208. hey guitar playas, try this one!
  209. 6H30 phono with passive RIAA
  210. I need help troubleshooting a EL84 push pull amp.
  211. Tube Data needed please
  212. Filament Transformer
  213. strange tube
  214. 12AX7 and 12AT7 numerical data
  215. DC/DC converter to power tube amp?
  216. Basic Cathode Follower buffer
  217. Marshall EL84 20/20 schematic needed
  218. Help me!!! I need schematic of Pow-Amp using 6V6
  219. gi30, se pentode?
  220. Any experience with Chinese 6N8P
  221. Source for common mode chokes
  222. Low Power FM stereo transmitter?
  223. Rh807
  224. Replacing a power tube (used as driver for mosfet car amp)...how to bias?
  225. Question about sub out on amp
  226. opt question
  227. Tube socket wanted. (help where)
  228. voltage regulator using ECL84 + OB2
  229. Help! 6sn7GT
  230. tubes n needles
  231. PSpice/LTSpice model for 6AU6/EF94?
  232. 5AR4/GZ34 GT Britain
  233. CCS vs mu-follower. What's the difference?
  234. Need advice on two preamp kits.
  235. My First Tube Amplifier
  236. Output (beam) pentodes / tetrodes suitable for screen grid drive
  237. Patent applications of interest
  238. Rca
  239. Guitar Amps
  240. Melos GK-1 Tube Pre-amp Schematic needed ...
  241. 6L6s and 6AR6s - what can I do with them?
  242. Line stage preamp, based on SY's "Heretical Unity gain line stage"
  243. 1600v HT supply for scope.
  244. Mc 275 CE schema
  245. Help! is this work?
  246. Some questons on a DIY system.
  247. pinout on 6GT5A tube
  248. 50Hz hum after increasing grid stopper
  249. A Heretical Unity Gain Line Stage part II
  250. 832A Push Pull 5W

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