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  1. 12v Tube amp
  2. Is this ok
  3. 12ax7 Bass Preamp Power Supply Question.
  4. Help a newbie out with his Sherwood S-800iii
  5. A&R 4008 output transformers
  6. Kulish Circuit
  7. A little digression= read on
  8. Sweep tubes and G3
  9. CCS - Help!
  10. Another odd-ball PA amplifier
  11. Question About High-Fidelity Magazine 195x - 196x
  12. The Heathkit MA-12 - A Mullard 5-10 In Disguise
  13. who have schematic of Phenix OTL G3?
  14. CHAMP8 with ECLL800
  15. Drive requirements.....
  16. KT88 hybrid amplifier
  17. 2300 ohm vs 5000 ohm output trans question
  18. Has anyone used this regulator?
  19. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  20. Current mirror circuits
  21. splitter/driver stage
  22. Would someone explain this amp to me please?
  23. What am I experiencing?
  24. 6U10, 6AC10, 6D10, 6AV11
  25. My debut into the vacuum world: Yarland FV34B
  26. Resistor value tweaks for Radford STA35
  27. do you own a chinese tube integrate? does it.... smell?
  28. Needs help to find transformer
  29. 12AU7 / 12AX7 push-pull
  30. Subwoofer connection?
  31. Ultra-low Noise Valve Regulated PSU. How to?
  32. One channel has less glow
  33. 6l6 tube amp troubleshooring progress
  34. Baldwin organ transformers
  35. has anyone used a chip for an input driver to a 2A3 or the like??
  36. Good PSU for HT upt to 15mA??
  37. Edcor transformers have arrived, but really puzzled!
  38. Single tube, Single ended, 20W, impossible?
  39. Stan's Aikido Build
  40. Power transformer rating
  41. 7w 300b vs 350w Car audio observation (car loses)
  42. Seriously considering doing an OTL - but . .
  43. Emulating remote cut off
  44. Cheap Sakura Hybrid Tube Amp Modification
  45. screen tap on OPT
  46. Understanding Cathode Decoupling
  47. How to test interstage transformers?
  48. DIY Tube Mic
  49. Modified 6C33C
  50. Counterpoint SA-3.1 Rebuild
  51. 6V6 flare at start up
  52. Tube aging, in-circuit test?
  53. HV Regulator board
  54. What kind of top cap for 6V7G?
  55. First timer wood chassis hints
  56. High voltage and heat sinks
  57. GM-70 family with top cap anode?
  58. testing 8417's on mercury 1000
  59. 6N3 Tube Preamp with DC-DC converter
  60. Question About Worn Tubes
  61. help ID 4-500 old stock tubes
  62. 6SN7 SRPP preamp
  63. Reduced Heater voltage to reduce noise
  64. ECL82 monoblock 'spud' and a question
  65. Small Tube/SS hybrid amplifier design 9V
  66. Plate load impedance
  67. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  68. Good idle current for NOS 7868's
  69. 6N2P - WHAT THE?????????????
  70. Got an old Westinghouse radio today!!!
  71. Distinction between Driver and Output stages
  72. Need a decent chassis punch set
  73. UL P/P KT88 Class A
  74. Problem with 12ax7 phono stage
  75. LA2A parts, T4B spare
  76. Was ist das?
  77. Rset values for IXYS IXTP01N100D
  78. Dutch Book
  79. Tube amplifier chassis damping
  80. How the heck do I solve this problem????
  81. Pentode to Triode Operation
  82. AbouT the PSU II simulator & the "Cockeyed Bridge"
  83. GM70 bias & IT ratio question
  84. Transformer or choke sealed with metal case
  85. Projector 6V6 Tube Amp rats nest p2p
  86. micro pre amp
  87. Aikido - calculating Rk for new tubes
  88. Steady thumping noise in preamp
  89. Leak Stereo 20 hum and buzz problem
  90. 5V AC maining for filaments
  91. Topology for Schade
  92. Thorsten 6SN7 Line stage.
  93. 12v B+ Tube buffer 12AX7
  94. 300B preamp - best operating point
  95. home made tube amp with 12v b+ how to build one?
  96. Engineer's Amp
  97. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  98. FFT for adjusting tubes
  99. Music to soothe the savage tubes.
  100. Voltage divider instead of expensive volume pot or stepped attenuator.
  101. Question about Hickok 539C
  102. Long-tail pair phase splitter
  103. LM317 calculator for filament circuit
  104. Self-Biased Cathode Follower Output Point
  105. filaments power supply
  106. Power tube buffer
  107. Latching Switch Assemblies
  108. Easy Way To Reduce 251V to 235V?
  109. EL84 Push Pull 25-30 watts
  110. Exploded view of valves
  111. Infineon BSP135 depletion mode mosfet
  112. Show us you COMPACT tube amps !
  113. HV Regulator
  114. Help with my new system
  115. Anything similar to the RNT900 regulator?
  116. The 3W Hammond 125ASE output transformer
  117. Carbon Comp vs Metal Film
  118. Different brand valves
  119. quad el84 or PP el34
  120. Inexpensive wire source
  121. to MC30 or not to MC30
  122. unbypassed cathode resistor
  123. Does this transformer work?
  124. Max grid resistance for GM70?
  125. Stacked power supply HELP!
  126. Parallel pwr supply chokes for add'l current?
  127. Need help to verify Amperex 7119's genuineness
  128. Need help/advice on a problem with console amplifier
  129. Getting started with my VERY FIRST project
  130. PCL Vintage Amp VA1956 - transformer issue
  131. Help to Identify
  132. 300B based preamp....looking for schematic
  133. USB Oscilloscope
  134. RH84SE, use as headphone amp ?
  135. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  136. Power triode bias by tube rectifier
  137. Two questions on IR volume control
  138. 25 watt output tube
  139. DC heating my 300b
  140. RNT-900 regulator
  141. KT61 Equivalent - Ping Waveborne
  142. EICO 666 meter needle moves too fast/pegs too hard...help?
  143. Eico 666 meter movement speed help
  144. Running a tube without heaters
  145. SE-BAL-SE Switching
  146. What makes is stereo?
  147. Triple Checking Calcs: metering bias with mA meter
  148. EL84 & 12AX7 Amp possibilities
  149. Weird issue with tube driver.
  150. 6E5P
  151. 6B4G / 6S4S Biasing Question
  152. Quick tube wear question
  153. Looking for a tube amp
  154. Internal placing of components
  155. Preamplifiers v power amplifiers
  156. LP2 dht driver
  157. hammond 1650
  158. Load For PSU
  159. *PING* Tubechimp
  160. Revamping of a Michaelson & Austin TVA-1
  161. 6V6 Behavior W/Fixed Bias (SE Amp)
  162. Low noise, low microphony, low hum valves
  163. 6L6 / 12AX7 push-pull
  164. bowei amp for audionote ax-2 speakers?
  165. Yet another Priboi thread...
  166. Help Old Radio Philips
  167. Distortion discussion from mosqueto Hybrid thread
  168. Sovtek 6N1P Microphonics
  169. ECC86 / 6GM8 Radio Receiver Help
  170. Los Angeles
  171. Op point for 6au6/6gu5 in P-G feedback 6550
  172. Tube Pre-Amp Schematic Needed
  173. find a YAQIN 5881a amplifier
  174. 11N90C in the SBCCS circuit
  175. Help replacing a PSU choke - How to choose choke
  176. does this look like a joke to you?
  177. Electronic Choke for Valve Amplifiers
  178. Sockets for a WE429A
  179. To bypass or not to bypass...
  180. DIY Curve Tracer
  181. 300B filament winding center tapped?
  182. help me decide,headphone amp - parafeed or normal tx ?
  183. 7060 vs 6AN8A
  184. Psu
  185. EDCOR Output transformer for 300B
  186. 80 or RGN1064 Scenario
  187. TUBENEWB - Quad KT88 Monoblocks
  188. CCS in Differential phase splitter?
  189. Need schematic for Smart 2x150vt
  190. Antek OPT
  191. 6DQ6 for audio power amp?
  192. Anyone identify this Mullard?
  193. My Mullard 5-20: some photos and a question
  194. Tube can work in low volt~~fix your knowledge
  195. A problem with a tube receiver
  196. Auto Transformer - safety advice
  197. Where I could find tube in San Jose
  198. 6Н30П spice model for MicroCap ?
  199. Transformer input and resonance
  200. GE6111 Preamplifier
  201. Where to buy audio tubes in Europe
  202. Play iPod into 1955 Record Player's Tube Amplifier
  203. To Schade it , or not..
  204. questions on input stage
  205. Planar/Lighthouse triodes for Audio?
  206. The Best coupling cap..THEL??
  207. 211 SET 40W output design and mfg.
  208. Volume Control with Loudness and no Taps
  209. Use for 4k PP (non UL) OPT's?
  210. Heathkit Oscilloscope O-12
  211. Filament Autobias
  212. Shelby NC Ham Fest
  213. 2A3 Spud
  214. Resistor as a load
  215. How to balance pushp pull DHT finals
  216. 240v to 220v
  217. Hammond 272 FX plate voltage
  218. Drawing Load Line for Parallel Output Tube
  219. question about swapping el34 for kt77 in my tube amp
  220. 6 volt recifier tubes
  221. Output transformer sizing...again...
  222. Power supply cabling
  223. Voltage doubler using PSUII?
  224. Rectifier Tubes in SE Amps
  225. 6v6 SEP
  226. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  227. Jumper Wire Gauge and Material for Phono Preamp?
  228. Tube libraries for AutoTRAX wanted.
  229. DIY Layout Creator for Chassis Designs
  230. ecc99 - 6C19n PP, (6S19P)
  231. Strange HF distortion
  232. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  233. Early history of High Fidelity amplifiers
  234. Which pentode for input?
  235. 6n6p or 6P14P-ev for driver
  236. Old tranny - confused with windings
  237. Dynaco A-430 Vintage Output Transformers
  238. Output tube for 800 Ohm speaker?
  239. Today was the anual Tree Street Yard Sale event
  240. Florida ? what did I get ?
  241. 26HU5's vs 26DQ5's
  242. VoltCraft AT-400?
  243. Sonic differences: 45, 2A3, 300B, 845, 211
  244. Need help wiring a pot for cathode adjustment
  245. Sound of the 6SN7?
  246. A mystery device
  247. Plate curves... Ic2 & Ib?
  248. How to choke load for big voltage swings?
  249. 6550 SE design, please comment.
  250. "Impedance" of the output transformer

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