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  1. has anyone used a chip for an input driver to a 2A3 or the like??
  2. Good PSU for HT upt to 15mA??
  3. Edcor transformers have arrived, but really puzzled!
  4. PCL86 Tube Pre-Amp for guitar. Any Idea?
  5. Single tube, Single ended, 20W, impossible?
  6. Stan's Aikido Build
  7. Power transformer rating
  8. 7w 300b vs 350w Car audio observation (car loses)
  9. Seriously considering doing an OTL - but . .
  10. Emulating remote cut off
  11. Cheap Sakura Hybrid Tube Amp Modification
  12. screen tap on OPT
  13. Understanding Cathode Decoupling
  14. How to test interstage transformers?
  15. DIY Tube Mic
  16. Modified 6C33C
  17. Counterpoint SA-3.1 Rebuild
  18. 6V6 flare at start up
  19. Tube aging, in-circuit test?
  20. HV Regulator board
  21. What kind of top cap for 6V7G?
  22. Changing bass amp output transformer
  23. First timer wood chassis hints
  24. High voltage and heat sinks
  25. GM-70 family with top cap anode?
  26. testing 8417's on mercury 1000
  27. 6N3 Tube Preamp with DC-DC converter
  28. Question About Worn Tubes
  29. help ID 4-500 old stock tubes
  30. 6SN7 SRPP preamp
  31. Reduced Heater voltage to reduce noise
  32. ECL82 monoblock 'spud' and a question
  33. Small Tube/SS hybrid amplifier design 9V
  34. Gibson PA Amp
  35. Plate load impedance
  36. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  37. Good idle current for NOS 7868's
  38. 6N2P - WHAT THE?????????????
  39. Got an old Westinghouse radio today!!!
  40. Distinction between Driver and Output stages
  41. Need a decent chassis punch set
  42. UL P/P KT88 Class A
  43. Problem with 12ax7 phono stage
  44. LA2A parts, T4B spare
  45. Was ist das?
  46. Rset values for IXYS IXTP01N100D
  47. Dutch Book
  48. Tube amplifier chassis damping
  49. How the heck do I solve this problem????
  50. Pentode to Triode Operation
  51. AbouT the PSU II simulator & the "Cockeyed Bridge"
  52. GM70 bias & IT ratio question
  53. Transformer or choke sealed with metal case
  54. Peavy windsor tube head issue
  55. Projector 6V6 Tube Amp rats nest p2p
  56. micro pre amp
  57. Aikido - calculating Rk for new tubes
  58. Steady thumping noise in preamp
  59. Leak Stereo 20 hum and buzz problem
  60. 5V AC maining for filaments
  61. Topology for Schade
  62. Thorsten 6SN7 Line stage.
  63. 12v B+ Tube buffer 12AX7
  64. 300B preamp - best operating point
  65. home made tube amp with 12v b+ how to build one?
  66. Engineer's Amp
  67. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  68. FFT for adjusting tubes
  69. Music to soothe the savage tubes.
  70. Voltage divider instead of expensive volume pot or stepped attenuator.
  71. Question about Hickok 539C
  72. Long-tail pair phase splitter
  73. LM317 calculator for filament circuit
  74. Self-Biased Cathode Follower Output Point
  75. filaments power supply
  76. Power tube buffer
  77. Latching Switch Assemblies
  78. Easy Way To Reduce 251V to 235V?
  79. EL84 Push Pull 25-30 watts
  80. Exploded view of valves
  81. Infineon BSP135 depletion mode mosfet
  82. Show us you COMPACT tube amps !
  83. HV Regulator
  84. Help with my new system
  85. Anything similar to the RNT900 regulator?
  86. The 3W Hammond 125ASE output transformer
  87. Carbon Comp vs Metal Film
  88. Different brand valves
  89. Buzz In Guitar Amp
  90. quad el84 or PP el34
  91. Inexpensive wire source
  92. to MC30 or not to MC30
  93. unbypassed cathode resistor
  94. Supro Golden Holiday Schematic Needed
  95. Does this transformer work?
  96. Max grid resistance for GM70?
  97. Stacked power supply HELP!
  98. Parallel pwr supply chokes for add'l current?
  99. Need help to verify Amperex 7119's genuineness
  100. Need help/advice on a problem with console amplifier
  101. Getting started with my VERY FIRST project
  102. PCL Vintage Amp VA1956 - transformer issue
  103. Help to Identify
  104. 300B based preamp....looking for schematic
  105. USB Oscilloscope
  106. RH84SE, use as headphone amp ?
  107. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  108. Power triode bias by tube rectifier
  109. Two questions on IR volume control
  110. 25 watt output tube
  111. DC heating my 300b
  112. RNT-900 regulator
  113. KT61 Equivalent - Ping Waveborne
  114. EICO 666 meter needle moves too fast/pegs too hard...help?
  115. Eico 666 meter movement speed help
  116. Running a tube without heaters
  117. SE-BAL-SE Switching
  118. What makes is stereo?
  119. Triple Checking Calcs: metering bias with mA meter
  120. EL84 & 12AX7 Amp possibilities
  121. Weird issue with tube driver.
  122. 6E5P
  123. 6B4G / 6S4S Biasing Question
  124. Quick tube wear question
  125. Looking for a tube amp
  126. Internal placing of components
  127. Preamplifiers v power amplifiers
  128. LP2 dht driver
  129. hammond 1650
  130. reverb
  131. Load For PSU
  132. *PING* Tubechimp
  133. Revamping of a Michaelson & Austin TVA-1
  134. 6V6 Behavior W/Fixed Bias (SE Amp)
  135. Low noise, low microphony, low hum valves
  136. 6L6 / 12AX7 push-pull
  137. bowei amp for audionote ax-2 speakers?
  138. Yet another Priboi thread...
  139. Help Old Radio Philips
  140. Distortion discussion from mosqueto Hybrid thread
  141. Sovtek 6N1P Microphonics
  142. ECC86 / 6GM8 Radio Receiver Help
  143. Los Angeles
  144. Op point for 6au6/6gu5 in P-G feedback 6550
  145. Tube Pre-Amp Schematic Needed
  146. find a YAQIN 5881a amplifier
  147. 11N90C in the SBCCS circuit
  148. Help replacing a PSU choke - How to choose choke
  149. does this look like a joke to you?
  150. Electronic Choke for Valve Amplifiers
  151. Sockets for a WE429A
  152. To bypass or not to bypass...
  153. DIY Curve Tracer
  154. 300B filament winding center tapped?
  155. help me decide,headphone amp - parafeed or normal tx ?
  156. 7060 vs 6AN8A
  157. Psu
  158. Blackheart amp moding question
  159. EDCOR Output transformer for 300B
  160. 80 or RGN1064 Scenario
  161. TUBENEWB - Quad KT88 Monoblocks
  162. CCS in Differential phase splitter?
  163. Need schematic for Smart 2x150vt
  164. Antek OPT
  165. 6DQ6 for audio power amp?
  166. Anyone identify this Mullard?
  167. My Mullard 5-20: some photos and a question
  168. Tube can work in low volt~~fix your knowledge
  169. A problem with a tube receiver
  170. Auto Transformer - safety advice
  171. Where I could find tube in San Jose
  172. 6Н30П spice model for MicroCap ?
  173. Transformer input and resonance
  174. GE6111 Preamplifier
  175. Where to buy audio tubes in Europe
  176. Play iPod into 1955 Record Player's Tube Amplifier
  177. To Schade it , or not..
  178. questions on input stage
  179. Planar/Lighthouse triodes for Audio?
  180. The Best coupling cap..THEL??
  181. 211 SET 40W output design and mfg.
  182. Volume Control with Loudness and no Taps
  183. Use for 4k PP (non UL) OPT's?
  184. Heathkit Oscilloscope O-12
  185. Filament Autobias
  186. Shelby NC Ham Fest
  187. 2A3 Spud
  188. Resistor as a load
  189. How to balance pushp pull DHT finals
  190. 240v to 220v
  191. Hammond 272 FX plate voltage
  192. Drawing Load Line for Parallel Output Tube
  193. question about swapping el34 for kt77 in my tube amp
  194. 6 volt recifier tubes
  195. PSU Capacitor Selection
  196. Output transformer sizing...again...
  197. Power supply cabling
  198. Voltage doubler using PSUII?
  199. Rectifier Tubes in SE Amps
  200. 6v6 SEP
  201. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  202. Jumper Wire Gauge and Material for Phono Preamp?
  203. Tube libraries for AutoTRAX wanted.
  204. DIY Layout Creator for Chassis Designs
  205. ecc99 - 6C19n PP, (6S19P)
  206. Dr Z Carmen Ghia build from a Hammond Reverb amp!!
  207. Strange HF distortion
  208. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  209. Marshall 1959 (Super Tremolo) repair help
  210. Early history of High Fidelity amplifiers
  211. Which pentode for input?
  212. 6n6p or 6P14P-ev for driver
  213. Old tranny - confused with windings
  214. Dynaco A-430 Vintage Output Transformers
  215. Output tube for 800 Ohm speaker?
  216. Today was the anual Tree Street Yard Sale event
  217. Florida ? what did I get ?
  218. 26HU5's vs 26DQ5's
  219. VoltCraft AT-400?
  220. Sonic differences: 45, 2A3, 300B, 845, 211
  221. Need help wiring a pot for cathode adjustment
  222. Sound of the 6SN7?
  223. A mystery device
  224. Plate curves... Ic2 & Ib?
  225. How to choke load for big voltage swings?
  226. 6550 SE design, please comment.
  227. "Impedance" of the output transformer
  228. Triode-wired small signal pentode question
  229. Calculating output impedance
  230. 6JM6 Infomation for Pete Millett's DCPP Amp
  231. Tube labeld ETBB
  232. Heaters wiring help!
  233. What do you guys think of this IR volume control?
  234. Can you send me the Aikido 5687 user manual
  235. Cathode Follower output cap
  236. EL84 rebuild suggestions
  237. voltage divider in WE91 driver
  238. Power Tx Myth?
  239. voltage multiplier based on SS trafo - LONG
  240. What tube for QUIET phono pre??
  241. A&R 8ohm 4008 output transformer
  242. How does DRD Ultrapath Work?
  243. Russian 6H2p-E??
  244. Started work on my stereo 7027a PSE amp
  245. Mono Tube Comp for analog kick drum
  246. Line stage preamplifier
  247. Trying to select the Aikido components
  248. X-PRE musical fidelity preamp. need help modifying
  249. 6C33C & Borbely Question
  250. 12BH7A in common cathode

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