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  1. who have schematic of Phenix OTL G3?
  2. CHAMP8 with ECLL800
  3. Drive requirements.....
  4. KT88 hybrid amplifier
  5. 2300 ohm vs 5000 ohm output trans question
  6. Has anyone used this regulator?
  7. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  8. Current mirror circuits
  9. splitter/driver stage
  10. Would someone explain this amp to me please?
  11. What am I experiencing?
  12. 6U10, 6AC10, 6D10, 6AV11
  13. My debut into the vacuum world: Yarland FV34B
  14. Resistor value tweaks for Radford STA35
  15. do you own a chinese tube integrate? does it.... smell?
  16. Needs help to find transformer
  17. 12AU7 / 12AX7 push-pull
  18. Subwoofer connection?
  19. Ultra-low Noise Valve Regulated PSU. How to?
  20. One channel has less glow
  21. 6l6 tube amp troubleshooring progress
  22. Baldwin organ transformers
  23. has anyone used a chip for an input driver to a 2A3 or the like??
  24. Good PSU for HT upt to 15mA??
  25. Edcor transformers have arrived, but really puzzled!
  26. Single tube, Single ended, 20W, impossible?
  27. Stan's Aikido Build
  28. Power transformer rating
  29. 7w 300b vs 350w Car audio observation (car loses)
  30. Seriously considering doing an OTL - but . .
  31. Emulating remote cut off
  32. Cheap Sakura Hybrid Tube Amp Modification
  33. screen tap on OPT
  34. Understanding Cathode Decoupling
  35. How to test interstage transformers?
  36. DIY Tube Mic
  37. Modified 6C33C
  38. Counterpoint SA-3.1 Rebuild
  39. 6V6 flare at start up
  40. Tube aging, in-circuit test?
  41. HV Regulator board
  42. What kind of top cap for 6V7G?
  43. First timer wood chassis hints
  44. High voltage and heat sinks
  45. GM-70 family with top cap anode?
  46. testing 8417's on mercury 1000
  47. 6N3 Tube Preamp with DC-DC converter
  48. Question About Worn Tubes
  49. help ID 4-500 old stock tubes
  50. 6SN7 SRPP preamp
  51. Reduced Heater voltage to reduce noise
  52. ECL82 monoblock 'spud' and a question
  53. Small Tube/SS hybrid amplifier design 9V
  54. Plate load impedance
  55. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  56. Good idle current for NOS 7868's
  57. 6N2P - WHAT THE?????????????
  58. Got an old Westinghouse radio today!!!
  59. Distinction between Driver and Output stages
  60. Need a decent chassis punch set
  61. UL P/P KT88 Class A
  62. Problem with 12ax7 phono stage
  63. LA2A parts, T4B spare
  64. Was ist das?
  65. Rset values for IXYS IXTP01N100D
  66. Dutch Book
  67. Tube amplifier chassis damping
  68. How the heck do I solve this problem????
  69. Pentode to Triode Operation
  70. AbouT the PSU II simulator & the "Cockeyed Bridge"
  71. GM70 bias & IT ratio question
  72. Transformer or choke sealed with metal case
  73. Projector 6V6 Tube Amp rats nest p2p
  74. micro pre amp
  75. Aikido - calculating Rk for new tubes
  76. Steady thumping noise in preamp
  77. Leak Stereo 20 hum and buzz problem
  78. 5V AC maining for filaments
  79. Topology for Schade
  80. Thorsten 6SN7 Line stage.
  81. 12v B+ Tube buffer 12AX7
  82. 300B preamp - best operating point
  83. home made tube amp with 12v b+ how to build one?
  84. Engineer's Amp
  85. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  86. FFT for adjusting tubes
  87. Music to soothe the savage tubes.
  88. Voltage divider instead of expensive volume pot or stepped attenuator.
  89. Question about Hickok 539C
  90. Long-tail pair phase splitter
  91. LM317 calculator for filament circuit
  92. Self-Biased Cathode Follower Output Point
  93. filaments power supply
  94. Power tube buffer
  95. Latching Switch Assemblies
  96. Easy Way To Reduce 251V to 235V?
  97. EL84 Push Pull 25-30 watts
  98. Exploded view of valves
  99. Infineon BSP135 depletion mode mosfet
  100. Show us you COMPACT tube amps !
  101. HV Regulator
  102. Help with my new system
  103. Anything similar to the RNT900 regulator?
  104. The 3W Hammond 125ASE output transformer
  105. Carbon Comp vs Metal Film
  106. Different brand valves
  107. quad el84 or PP el34
  108. Inexpensive wire source
  109. to MC30 or not to MC30
  110. unbypassed cathode resistor
  111. Does this transformer work?
  112. Max grid resistance for GM70?
  113. Stacked power supply HELP!
  114. Parallel pwr supply chokes for add'l current?
  115. Need help to verify Amperex 7119's genuineness
  116. Need help/advice on a problem with console amplifier
  117. Getting started with my VERY FIRST project
  118. PCL Vintage Amp VA1956 - transformer issue
  119. Help to Identify
  120. 300B based preamp....looking for schematic
  121. USB Oscilloscope
  122. RH84SE, use as headphone amp ?
  123. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  124. Power triode bias by tube rectifier
  125. Two questions on IR volume control
  126. 25 watt output tube
  127. DC heating my 300b
  128. RNT-900 regulator
  129. KT61 Equivalent - Ping Waveborne
  130. EICO 666 meter needle moves too fast/pegs too hard...help?
  131. Eico 666 meter movement speed help
  132. Running a tube without heaters
  133. SE-BAL-SE Switching
  134. What makes is stereo?
  135. Triple Checking Calcs: metering bias with mA meter
  136. EL84 & 12AX7 Amp possibilities
  137. Weird issue with tube driver.
  138. 6E5P
  139. 6B4G / 6S4S Biasing Question
  140. Quick tube wear question
  141. Looking for a tube amp
  142. Internal placing of components
  143. Preamplifiers v power amplifiers
  144. LP2 dht driver
  145. hammond 1650
  146. Load For PSU
  147. *PING* Tubechimp
  148. Revamping of a Michaelson & Austin TVA-1
  149. 6V6 Behavior W/Fixed Bias (SE Amp)
  150. Low noise, low microphony, low hum valves
  151. 6L6 / 12AX7 push-pull
  152. bowei amp for audionote ax-2 speakers?
  153. Yet another Priboi thread...
  154. Help Old Radio Philips
  155. Distortion discussion from mosqueto Hybrid thread
  156. Sovtek 6N1P Microphonics
  157. ECC86 / 6GM8 Radio Receiver Help
  158. Los Angeles
  159. Op point for 6au6/6gu5 in P-G feedback 6550
  160. Tube Pre-Amp Schematic Needed
  161. find a YAQIN 5881a amplifier
  162. 11N90C in the SBCCS circuit
  163. Help replacing a PSU choke - How to choose choke
  164. does this look like a joke to you?
  165. Electronic Choke for Valve Amplifiers
  166. Sockets for a WE429A
  167. To bypass or not to bypass...
  168. DIY Curve Tracer
  169. 300B filament winding center tapped?
  170. help me decide,headphone amp - parafeed or normal tx ?
  171. 7060 vs 6AN8A
  172. Psu
  173. EDCOR Output transformer for 300B
  174. 80 or RGN1064 Scenario
  175. TUBENEWB - Quad KT88 Monoblocks
  176. CCS in Differential phase splitter?
  177. Need schematic for Smart 2x150vt
  178. Antek OPT
  179. 6DQ6 for audio power amp?
  180. Anyone identify this Mullard?
  181. My Mullard 5-20: some photos and a question
  182. Tube can work in low volt~~fix your knowledge
  183. A problem with a tube receiver
  184. Auto Transformer - safety advice
  185. Where I could find tube in San Jose
  186. 6Н30П spice model for MicroCap ?
  187. Transformer input and resonance
  188. GE6111 Preamplifier
  189. Where to buy audio tubes in Europe
  190. Play iPod into 1955 Record Player's Tube Amplifier
  191. To Schade it , or not..
  192. questions on input stage
  193. Planar/Lighthouse triodes for Audio?
  194. The Best coupling cap..THEL??
  195. 211 SET 40W output design and mfg.
  196. Volume Control with Loudness and no Taps
  197. Use for 4k PP (non UL) OPT's?
  198. Heathkit Oscilloscope O-12
  199. Filament Autobias
  200. Shelby NC Ham Fest
  201. 2A3 Spud
  202. Resistor as a load
  203. How to balance pushp pull DHT finals
  204. 240v to 220v
  205. Hammond 272 FX plate voltage
  206. Drawing Load Line for Parallel Output Tube
  207. question about swapping el34 for kt77 in my tube amp
  208. 6 volt recifier tubes
  209. PSU Capacitor Selection
  210. Output transformer sizing...again...
  211. Power supply cabling
  212. Voltage doubler using PSUII?
  213. Rectifier Tubes in SE Amps
  214. 6v6 SEP
  215. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  216. Jumper Wire Gauge and Material for Phono Preamp?
  217. Tube libraries for AutoTRAX wanted.
  218. DIY Layout Creator for Chassis Designs
  219. ecc99 - 6C19n PP, (6S19P)
  220. Strange HF distortion
  221. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  222. Early history of High Fidelity amplifiers
  223. Which pentode for input?
  224. 6n6p or 6P14P-ev for driver
  225. Old tranny - confused with windings
  226. Dynaco A-430 Vintage Output Transformers
  227. Output tube for 800 Ohm speaker?
  228. Today was the anual Tree Street Yard Sale event
  229. Florida ? what did I get ?
  230. 26HU5's vs 26DQ5's
  231. VoltCraft AT-400?
  232. Sonic differences: 45, 2A3, 300B, 845, 211
  233. Need help wiring a pot for cathode adjustment
  234. Sound of the 6SN7?
  235. A mystery device
  236. Plate curves... Ic2 & Ib?
  237. How to choke load for big voltage swings?
  238. 6550 SE design, please comment.
  239. "Impedance" of the output transformer
  240. Triode-wired small signal pentode question
  241. Calculating output impedance
  242. 6JM6 Infomation for Pete Millett's DCPP Amp
  243. Tube labeld ETBB
  244. Heaters wiring help!
  245. What do you guys think of this IR volume control?
  246. Can you send me the Aikido 5687 user manual
  247. Cathode Follower output cap
  248. EL84 rebuild suggestions
  249. voltage divider in WE91 driver
  250. Power Tx Myth?

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