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  1. Is this ok
  2. 12ax7 Bass Preamp Power Supply Question.
  3. Help a newbie out with his Sherwood S-800iii
  4. A&R 4008 output transformers
  5. Kulish Circuit
  6. A little digression= read on
  7. Sweep tubes and G3
  8. CCS - Help!
  9. Another odd-ball PA amplifier
  10. 25W with 2xEL86(6CW5)!
  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. PCL86 Tube Pre-Amp for guitar. Any Idea?
  39. Single tube, Single ended, 20W, impossible?
  40. Stan's Aikido Build
  41. Power transformer rating
  42. 7w 300b vs 350w Car audio observation (car loses)
  43. Seriously considering doing an OTL - but . .
  44. Emulating remote cut off
  45. Cheap Sakura Hybrid Tube Amp Modification
  46. screen tap on OPT
  47. Understanding Cathode Decoupling
  48. How to test interstage transformers?
  49. DIY Tube Mic
  50. Modified 6C33C
  51. Counterpoint SA-3.1 Rebuild
  52. 6V6 flare at start up
  53. Tube aging, in-circuit test?
  54. HV Regulator board
  55. What kind of top cap for 6V7G?
  56. Changing bass amp output transformer
  57. First timer wood chassis hints
  58. High voltage and heat sinks
  59. GM-70 family with top cap anode?
  60. testing 8417's on mercury 1000
  61. 6N3 Tube Preamp with DC-DC converter
  62. Question About Worn Tubes
  63. help ID 4-500 old stock tubes
  64. 6SN7 SRPP preamp
  65. Reduced Heater voltage to reduce noise
  66. ECL82 monoblock 'spud' and a question
  67. Small Tube/SS hybrid amplifier design 9V
  68. Gibson PA Amp
  69. Plate load impedance
  70. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  71. Good idle current for NOS 7868's
  72. 6N2P - WHAT THE?????????????
  73. Got an old Westinghouse radio today!!!
  74. Distinction between Driver and Output stages
  75. Need a decent chassis punch set
  76. UL P/P KT88 Class A
  77. Problem with 12ax7 phono stage
  78. LA2A parts, T4B spare
  79. Was ist das?
  80. Rset values for IXYS IXTP01N100D
  81. Dutch Book
  82. Tube amplifier chassis damping
  83. How the heck do I solve this problem????
  84. Pentode to Triode Operation
  85. AbouT the PSU II simulator & the "Cockeyed Bridge"
  86. GM70 bias & IT ratio question
  87. Transformer or choke sealed with metal case
  88. Peavy windsor tube head issue
  89. Projector 6V6 Tube Amp rats nest p2p
  90. micro pre amp
  91. Aikido - calculating Rk for new tubes
  92. Steady thumping noise in preamp
  93. Leak Stereo 20 hum and buzz problem
  94. 5V AC maining for filaments
  95. Topology for Schade
  96. Thorsten 6SN7 Line stage.
  97. 12v B+ Tube buffer 12AX7
  98. 300B preamp - best operating point
  99. home made tube amp with 12v b+ how to build one?
  100. Engineer's Amp
  101. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  102. FFT for adjusting tubes
  103. Music to soothe the savage tubes.
  104. Voltage divider instead of expensive volume pot or stepped attenuator.
  105. Question about Hickok 539C
  106. Long-tail pair phase splitter
  107. LM317 calculator for filament circuit
  108. Self-Biased Cathode Follower Output Point
  109. filaments power supply
  110. Power tube buffer
  111. Latching Switch Assemblies
  112. Easy Way To Reduce 251V to 235V?
  113. EL84 Push Pull 25-30 watts
  114. Exploded view of valves
  115. Infineon BSP135 depletion mode mosfet
  116. Show us you COMPACT tube amps !
  117. HV Regulator
  118. Help with my new system
  119. Anything similar to the RNT900 regulator?
  120. The 3W Hammond 125ASE output transformer
  121. Carbon Comp vs Metal Film
  122. Different brand valves
  123. Buzz In Guitar Amp
  124. quad el84 or PP el34
  125. Inexpensive wire source
  126. to MC30 or not to MC30
  127. unbypassed cathode resistor
  128. Supro Golden Holiday Schematic Needed
  129. Does this transformer work?
  130. Max grid resistance for GM70?
  131. Stacked power supply HELP!
  132. Parallel pwr supply chokes for add'l current?
  133. Need help to verify Amperex 7119's genuineness
  134. Need help/advice on a problem with console amplifier
  135. Getting started with my VERY FIRST project
  136. PCL Vintage Amp VA1956 - transformer issue
  137. Help to Identify
  138. 300B based preamp....looking for schematic
  139. USB Oscilloscope
  140. RH84SE, use as headphone amp ?
  141. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  142. Power triode bias by tube rectifier
  143. Two questions on IR volume control
  144. 25 watt output tube
  145. DC heating my 300b
  146. RNT-900 regulator
  147. KT61 Equivalent - Ping Waveborne
  148. EICO 666 meter needle moves too fast/pegs too hard...help?
  149. Eico 666 meter movement speed help
  150. Running a tube without heaters
  151. SE-BAL-SE Switching
  152. What makes is stereo?
  153. Triple Checking Calcs: metering bias with mA meter
  154. EL84 & 12AX7 Amp possibilities
  155. Weird issue with tube driver.
  156. 6E5P
  157. 6B4G / 6S4S Biasing Question
  158. Quick tube wear question
  159. Looking for a tube amp
  160. Internal placing of components
  161. Preamplifiers v power amplifiers
  162. LP2 dht driver
  163. hammond 1650
  164. reverb
  165. Load For PSU
  166. *PING* Tubechimp
  167. Revamping of a Michaelson & Austin TVA-1
  168. 6V6 Behavior W/Fixed Bias (SE Amp)
  169. Low noise, low microphony, low hum valves
  170. 6L6 / 12AX7 push-pull
  171. bowei amp for audionote ax-2 speakers?
  172. Yet another Priboi thread...
  173. Help Old Radio Philips
  174. Distortion discussion from mosqueto Hybrid thread
  175. Sovtek 6N1P Microphonics
  176. ECC86 / 6GM8 Radio Receiver Help
  177. Los Angeles
  178. Op point for 6au6/6gu5 in P-G feedback 6550
  179. Tube Pre-Amp Schematic Needed
  180. find a YAQIN 5881a amplifier
  181. 11N90C in the SBCCS circuit
  182. Help replacing a PSU choke - How to choose choke
  183. does this look like a joke to you?
  184. Electronic Choke for Valve Amplifiers
  185. Sockets for a WE429A
  186. To bypass or not to bypass...
  187. DIY Curve Tracer
  188. 300B filament winding center tapped?
  189. help me decide,headphone amp - parafeed or normal tx ?
  190. 7060 vs 6AN8A
  191. Psu
  192. Blackheart amp moding question
  193. EDCOR Output transformer for 300B
  194. 80 or RGN1064 Scenario
  195. TUBENEWB - Quad KT88 Monoblocks
  196. CCS in Differential phase splitter?
  197. Need schematic for Smart 2x150vt
  198. Antek OPT
  199. 6DQ6 for audio power amp?
  200. Anyone identify this Mullard?
  201. My Mullard 5-20: some photos and a question
  202. Tube can work in low volt~~fix your knowledge
  203. A problem with a tube receiver
  204. Auto Transformer - safety advice
  205. Where I could find tube in San Jose
  206. 6Н30П spice model for MicroCap ?
  207. Transformer input and resonance
  208. GE6111 Preamplifier
  209. Where to buy audio tubes in Europe
  210. Play iPod into 1955 Record Player's Tube Amplifier
  211. To Schade it , or not..
  212. questions on input stage
  213. Planar/Lighthouse triodes for Audio?
  214. The Best coupling cap..THEL??
  215. 211 SET 40W output design and mfg.
  216. Volume Control with Loudness and no Taps
  217. Use for 4k PP (non UL) OPT's?
  218. Heathkit Oscilloscope O-12
  219. Filament Autobias
  220. Shelby NC Ham Fest
  221. 2A3 Spud
  222. Resistor as a load
  223. How to balance pushp pull DHT finals
  224. 240v to 220v
  225. Hammond 272 FX plate voltage
  226. Drawing Load Line for Parallel Output Tube
  227. question about swapping el34 for kt77 in my tube amp
  228. 6 volt recifier tubes
  229. PSU Capacitor Selection
  230. Output transformer sizing...again...
  231. Power supply cabling
  232. Voltage doubler using PSUII?
  233. Rectifier Tubes in SE Amps
  234. 6v6 SEP
  235. 1967 Pioneer SX-34, 11W, WORTH FIXING???
  236. Jumper Wire Gauge and Material for Phono Preamp?
  237. Tube libraries for AutoTRAX wanted.
  238. DIY Layout Creator for Chassis Designs
  239. ecc99 - 6C19n PP, (6S19P)
  240. Dr Z Carmen Ghia build from a Hammond Reverb amp!!
  241. Strange HF distortion
  242. have a pair of 5k:8 OPTs lying around.. suggest me something to build?
  243. Marshall 1959 (Super Tremolo) repair help
  244. Early history of High Fidelity amplifiers
  245. Which pentode for input?
  246. 6n6p or 6P14P-ev for driver
  247. Old tranny - confused with windings
  248. Dynaco A-430 Vintage Output Transformers
  249. Output tube for 800 Ohm speaker?
  250. Today was the anual Tree Street Yard Sale event

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