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  1. Rectifier Valves
  2. WE311 amp
  3. Sherwood S8000 transformers
  4. yaqin MS-12B Search for Diagrams
  5. EICO HF-30 - Schematic
  6. 12AU7 Phono Stage
  7. How to install a motor run capcitor
  8. Sanity check on B+ regulator
  9. 6B4G PPP idea
  10. First OTL breadboarded
  11. New amp build
  12. Tube Parametric EQ - Idea looking for clarification
  13. Peavey Valveking 100- static sound during warm-up
  14. My Fender Twin Amp Not Working - get your guesses in
  15. DHT heater supply
  16. MC/MM Phono Pream PCB
  17. Help Identifying Old Westinghouse Tube Amp?
  18. GM70 SE Amplifier
  19. OPT considerations
  20. Help - the pre amp I made is not working!
  21. Aikido tube connections.
  22. EL34 PP output tranny questions
  23. DC heater voltage 6 volts or 12 volts?
  24. Dynaco st70....Can I use 6 ohm speakers?
  25. Aikido vs. Foreplay
  26. I found a valve amp in my garage...
  27. Separate PSU to Amp connection
  28. cheep miniure meters
  29. cary SLA 70
  30. Help!!! My Audioromy FU29 amplifier was fried!
  31. Help!!! My Audioromy FU29 amplifier was fried!
  32. Take a look at my transformers
  33. input transformer for Simple SE Tubelab amp
  34. miniblok 2 distorted sound
  35. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  36. For hk citation II owners\experts.
  37. Dynakit Mark III amplifier
  38. Transformer in reverse current doubt
  39. CELLINI-2 a hybrid
  40. Need help starting
  41. ARC (Audio Research) VT50
  42. mixed mode bias
  43. 2C52 datasheet
  44. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  45. 12v Tube amp
  46. Is this ok
  47. 12ax7 Bass Preamp Power Supply Question.
  48. Help a newbie out with his Sherwood S-800iii
  49. A&R 4008 output transformers
  50. Kulish Circuit
  51. A little digression= read on
  52. Sweep tubes and G3
  53. CCS - Help!
  54. Another odd-ball PA amplifier
  55. 25W with 2xEL86(6CW5)!
  56. Question About High-Fidelity Magazine 195x - 196x
  57. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  58. who have schematic of Phenix OTL G3?
  59. CHAMP8 with ECLL800
  60. Drive requirements.....
  61. KT88 hybrid amplifier
  62. 2300 ohm vs 5000 ohm output trans question
  63. Has anyone used this regulator?
  64. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  65. Current mirror circuits
  66. splitter/driver stage
  67. Would someone explain this amp to me please?
  68. What am I experiencing?
  69. 6U10, 6AC10, 6D10, 6AV11
  70. My debut into the vacuum world: Yarland FV34B
  71. Resistor value tweaks for Radford STA35
  72. do you own a chinese tube integrate? does it.... smell?
  73. Needs help to find transformer
  74. 12AU7 / 12AX7 push-pull
  75. Subwoofer connection?
  76. Ultra-low Noise Valve Regulated PSU. How to?
  77. One channel has less glow
  78. 6l6 tube amp troubleshooring progress
  79. Baldwin organ transformers
  80. has anyone used a chip for an input driver to a 2A3 or the like??
  81. Good PSU for HT upt to 15mA??
  82. Edcor transformers have arrived, but really puzzled!
  83. PCL86 Tube Pre-Amp for guitar. Any Idea?
  84. Single tube, Single ended, 20W, impossible?
  85. Stan's Aikido Build
  86. Power transformer rating
  87. 7w 300b vs 350w Car audio observation (car loses)
  88. Seriously considering doing an OTL - but . .
  89. Emulating remote cut off
  90. Cheap Sakura Hybrid Tube Amp Modification
  91. screen tap on OPT
  92. Understanding Cathode Decoupling
  93. How to test interstage transformers?
  94. DIY Tube Mic
  95. Modified 6C33C
  96. Counterpoint SA-3.1 Rebuild
  97. 6V6 flare at start up
  98. Tube aging, in-circuit test?
  99. HV Regulator board
  100. What kind of top cap for 6V7G?
  101. Changing bass amp output transformer
  102. First timer wood chassis hints
  103. High voltage and heat sinks
  104. GM-70 family with top cap anode?
  105. testing 8417's on mercury 1000
  106. 6N3 Tube Preamp with DC-DC converter
  107. Question About Worn Tubes
  108. help ID 4-500 old stock tubes
  109. 6SN7 SRPP preamp
  110. Reduced Heater voltage to reduce noise
  111. ECL82 monoblock 'spud' and a question
  112. Small Tube/SS hybrid amplifier design 9V
  113. Gibson PA Amp
  114. Plate load impedance
  115. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  116. Good idle current for NOS 7868's
  117. 6N2P - WHAT THE?????????????
  118. Got an old Westinghouse radio today!!!
  119. Distinction between Driver and Output stages
  120. Need a decent chassis punch set
  121. UL P/P KT88 Class A
  122. Problem with 12ax7 phono stage
  123. LA2A parts, T4B spare
  124. Was ist das?
  125. Rset values for IXYS IXTP01N100D
  126. Dutch Book
  127. Tube amplifier chassis damping
  128. How the heck do I solve this problem????
  129. Pentode to Triode Operation
  130. AbouT the PSU II simulator & the "Cockeyed Bridge"
  131. GM70 bias & IT ratio question
  132. Transformer or choke sealed with metal case
  133. Peavy windsor tube head issue
  134. Projector 6V6 Tube Amp rats nest p2p
  135. micro pre amp
  136. Aikido - calculating Rk for new tubes
  137. Steady thumping noise in preamp
  138. Leak Stereo 20 hum and buzz problem
  139. 5V AC maining for filaments
  140. Topology for Schade
  141. Thorsten 6SN7 Line stage.
  142. 12v B+ Tube buffer 12AX7
  143. 300B preamp - best operating point
  144. home made tube amp with 12v b+ how to build one?
  145. Engineer's Amp
  146. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  147. FFT for adjusting tubes
  148. Music to soothe the savage tubes.
  149. Voltage divider instead of expensive volume pot or stepped attenuator.
  150. Question about Hickok 539C
  151. Long-tail pair phase splitter
  152. LM317 calculator for filament circuit
  153. Self-Biased Cathode Follower Output Point
  154. filaments power supply
  155. Power tube buffer
  156. Latching Switch Assemblies
  157. Easy Way To Reduce 251V to 235V?
  158. EL84 Push Pull 25-30 watts
  159. Exploded view of valves
  160. Infineon BSP135 depletion mode mosfet
  161. Show us you COMPACT tube amps !
  162. HV Regulator
  163. Help with my new system
  164. Anything similar to the RNT900 regulator?
  165. The 3W Hammond 125ASE output transformer
  166. Carbon Comp vs Metal Film
  167. Different brand valves
  168. Buzz In Guitar Amp
  169. quad el84 or PP el34
  170. Inexpensive wire source
  171. to MC30 or not to MC30
  172. unbypassed cathode resistor
  173. Supro Golden Holiday Schematic Needed
  174. Does this transformer work?
  175. Max grid resistance for GM70?
  176. Stacked power supply HELP!
  177. Parallel pwr supply chokes for add'l current?
  178. Need help to verify Amperex 7119's genuineness
  179. Need help/advice on a problem with console amplifier
  180. Getting started with my VERY FIRST project
  181. PCL Vintage Amp VA1956 - transformer issue
  182. Help to Identify
  183. 300B based preamp....looking for schematic
  184. USB Oscilloscope
  185. RH84SE, use as headphone amp ?
  186. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  187. Power triode bias by tube rectifier
  188. Two questions on IR volume control
  189. 25 watt output tube
  190. DC heating my 300b
  191. RNT-900 regulator
  192. KT61 Equivalent - Ping Waveborne
  193. EICO 666 meter needle moves too fast/pegs too hard...help?
  194. Eico 666 meter movement speed help
  195. Running a tube without heaters
  196. SE-BAL-SE Switching
  197. What makes is stereo?
  198. Triple Checking Calcs: metering bias with mA meter
  199. EL84 & 12AX7 Amp possibilities
  200. Weird issue with tube driver.
  201. 6E5P
  202. 6B4G / 6S4S Biasing Question
  203. Quick tube wear question
  204. Looking for a tube amp
  205. Internal placing of components
  206. Preamplifiers v power amplifiers
  207. LP2 dht driver
  208. hammond 1650
  209. reverb
  210. Load For PSU
  211. *PING* Tubechimp
  212. Revamping of a Michaelson & Austin TVA-1
  213. 6V6 Behavior W/Fixed Bias (SE Amp)
  214. Low noise, low microphony, low hum valves
  215. 6L6 / 12AX7 push-pull
  216. bowei amp for audionote ax-2 speakers?
  217. Yet another Priboi thread...
  218. Help Old Radio Philips
  219. Distortion discussion from mosqueto Hybrid thread
  220. Sovtek 6N1P Microphonics
  221. ECC86 / 6GM8 Radio Receiver Help
  222. Los Angeles
  223. Op point for 6au6/6gu5 in P-G feedback 6550
  224. Tube Pre-Amp Schematic Needed
  225. find a YAQIN 5881a amplifier
  226. 11N90C in the SBCCS circuit
  227. Help replacing a PSU choke - How to choose choke
  228. does this look like a joke to you?
  229. Electronic Choke for Valve Amplifiers
  230. Sockets for a WE429A
  231. To bypass or not to bypass...
  232. DIY Curve Tracer
  233. 300B filament winding center tapped?
  234. help me decide,headphone amp - parafeed or normal tx ?
  235. 7060 vs 6AN8A
  236. Psu
  237. Blackheart amp moding question
  238. EDCOR Output transformer for 300B
  239. 80 or RGN1064 Scenario
  240. TUBENEWB - Quad KT88 Monoblocks
  241. CCS in Differential phase splitter?
  242. Need schematic for Smart 2x150vt
  243. Antek OPT
  244. 6DQ6 for audio power amp?
  245. Anyone identify this Mullard?
  246. My Mullard 5-20: some photos and a question
  247. Tube can work in low volt~~fix your knowledge
  248. A problem with a tube receiver
  249. Auto Transformer - safety advice
  250. Where I could find tube in San Jose

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