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  1. Sherwood S8000 transformers
  2. yaqin MS-12B Search for Diagrams
  3. EICO HF-30 - Schematic
  4. 12AU7 Phono Stage
  5. How to install a motor run capcitor
  6. Sanity check on B+ regulator
  7. 6B4G PPP idea
  8. First OTL breadboarded
  9. New amp build
  10. Tube Parametric EQ - Idea looking for clarification
  11. Peavey Valveking 100- static sound during warm-up
  12. My Fender Twin Amp Not Working - get your guesses in
  13. DHT heater supply
  14. MC/MM Phono Pream PCB
  15. Help Identifying Old Westinghouse Tube Amp?
  16. GM70 SE Amplifier
  17. OPT considerations
  18. Help - the pre amp I made is not working!
  19. Aikido tube connections.
  20. EL34 PP output tranny questions
  21. DC heater voltage 6 volts or 12 volts?
  22. Dynaco st70....Can I use 6 ohm speakers?
  23. Aikido vs. Foreplay
  24. I found a valve amp in my garage...
  25. Separate PSU to Amp connection
  26. cheep miniure meters
  27. cary SLA 70
  28. Help!!! My Audioromy FU29 amplifier was fried!
  29. Help!!! My Audioromy FU29 amplifier was fried!
  30. Take a look at my transformers
  31. input transformer for Simple SE Tubelab amp
  32. miniblok 2 distorted sound
  33. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  34. For hk citation II owners\experts.
  35. Dynakit Mark III amplifier
  36. Transformer in reverse current doubt
  37. CELLINI-2 a hybrid
  38. Need help starting
  39. ARC (Audio Research) VT50
  40. mixed mode bias
  41. 2C52 datasheet
  42. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  43. 12v Tube amp
  44. Is this ok
  45. 12ax7 Bass Preamp Power Supply Question.
  46. Help a newbie out with his Sherwood S-800iii
  47. A&R 4008 output transformers
  48. Kulish Circuit
  49. A little digression= read on
  50. Sweep tubes and G3
  51. CCS - Help!
  52. Another odd-ball PA amplifier
  53. 25W with 2xEL86(6CW5)!
  54. Question About High-Fidelity Magazine 195x - 196x
  55. The HEATHKIT MA-12 a MULLARD 5-10 In Disguise.
  56. who have schematic of Phenix OTL G3?
  57. CHAMP8 with ECLL800
  58. Drive requirements.....
  59. KT88 hybrid amplifier
  60. 2300 ohm vs 5000 ohm output trans question
  61. Has anyone used this regulator?
  62. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  63. Current mirror circuits
  64. splitter/driver stage
  65. Would someone explain this amp to me please?
  66. What am I experiencing?
  67. 6U10, 6AC10, 6D10, 6AV11
  68. My debut into the vacuum world: Yarland FV34B
  69. Resistor value tweaks for Radford STA35
  70. do you own a chinese tube integrate? does it.... smell?
  71. Needs help to find transformer
  72. 12AU7 / 12AX7 push-pull
  73. Subwoofer connection?
  74. Ultra-low Noise Valve Regulated PSU. How to?
  75. One channel has less glow
  76. 6l6 tube amp troubleshooring progress
  77. Baldwin organ transformers
  78. has anyone used a chip for an input driver to a 2A3 or the like??
  79. Good PSU for HT upt to 15mA??
  80. Edcor transformers have arrived, but really puzzled!
  81. PCL86 Tube Pre-Amp for guitar. Any Idea?
  82. Single tube, Single ended, 20W, impossible?
  83. Stan's Aikido Build
  84. Power transformer rating
  85. 7w 300b vs 350w Car audio observation (car loses)
  86. Seriously considering doing an OTL - but . .
  87. Emulating remote cut off
  88. Cheap Sakura Hybrid Tube Amp Modification
  89. screen tap on OPT
  90. Understanding Cathode Decoupling
  91. How to test interstage transformers?
  92. DIY Tube Mic
  93. Modified 6C33C
  94. Counterpoint SA-3.1 Rebuild
  95. 6V6 flare at start up
  96. Tube aging, in-circuit test?
  97. HV Regulator board
  98. What kind of top cap for 6V7G?
  99. Changing bass amp output transformer
  100. First timer wood chassis hints
  101. High voltage and heat sinks
  102. GM-70 family with top cap anode?
  103. testing 8417's on mercury 1000
  104. 6N3 Tube Preamp with DC-DC converter
  105. Question About Worn Tubes
  106. help ID 4-500 old stock tubes
  107. 6SN7 SRPP preamp
  108. Reduced Heater voltage to reduce noise
  109. ECL82 monoblock 'spud' and a question
  110. Small Tube/SS hybrid amplifier design 9V
  111. Gibson PA Amp
  112. Plate load impedance
  113. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  114. Good idle current for NOS 7868's
  115. 6N2P - WHAT THE?????????????
  116. Got an old Westinghouse radio today!!!
  117. Distinction between Driver and Output stages
  118. Need a decent chassis punch set
  119. UL P/P KT88 Class A
  120. Problem with 12ax7 phono stage
  121. LA2A parts, T4B spare
  122. Was ist das?
  123. Rset values for IXYS IXTP01N100D
  124. Dutch Book
  125. Tube amplifier chassis damping
  126. How the heck do I solve this problem????
  127. Pentode to Triode Operation
  128. AbouT the PSU II simulator & the "Cockeyed Bridge"
  129. GM70 bias & IT ratio question
  130. Transformer or choke sealed with metal case
  131. Peavy windsor tube head issue
  132. Projector 6V6 Tube Amp rats nest p2p
  133. micro pre amp
  134. Aikido - calculating Rk for new tubes
  135. Steady thumping noise in preamp
  136. Leak Stereo 20 hum and buzz problem
  137. 5V AC maining for filaments
  138. Topology for Schade
  139. Thorsten 6SN7 Line stage.
  140. 12v B+ Tube buffer 12AX7
  141. 300B preamp - best operating point
  142. home made tube amp with 12v b+ how to build one?
  143. Engineer's Amp
  144. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  145. FFT for adjusting tubes
  146. Music to soothe the savage tubes.
  147. Voltage divider instead of expensive volume pot or stepped attenuator.
  148. Question about Hickok 539C
  149. Long-tail pair phase splitter
  150. LM317 calculator for filament circuit
  151. Self-Biased Cathode Follower Output Point
  152. filaments power supply
  153. Power tube buffer
  154. Latching Switch Assemblies
  155. Easy Way To Reduce 251V to 235V?
  156. EL84 Push Pull 25-30 watts
  157. Exploded view of valves
  158. Infineon BSP135 depletion mode mosfet
  159. Show us you COMPACT tube amps !
  160. HV Regulator
  161. Help with my new system
  162. Anything similar to the RNT900 regulator?
  163. The 3W Hammond 125ASE output transformer
  164. Carbon Comp vs Metal Film
  165. Different brand valves
  166. Buzz In Guitar Amp
  167. quad el84 or PP el34
  168. Inexpensive wire source
  169. to MC30 or not to MC30
  170. unbypassed cathode resistor
  171. Supro Golden Holiday Schematic Needed
  172. Does this transformer work?
  173. Max grid resistance for GM70?
  174. Stacked power supply HELP!
  175. Parallel pwr supply chokes for add'l current?
  176. Need help to verify Amperex 7119's genuineness
  177. Need help/advice on a problem with console amplifier
  178. Getting started with my VERY FIRST project
  179. PCL Vintage Amp VA1956 - transformer issue
  180. Help to Identify
  181. 300B based preamp....looking for schematic
  182. USB Oscilloscope
  183. RH84SE, use as headphone amp ?
  184. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  185. Power triode bias by tube rectifier
  186. Two questions on IR volume control
  187. 25 watt output tube
  188. DC heating my 300b
  189. RNT-900 regulator
  190. KT61 Equivalent - Ping Waveborne
  191. EICO 666 meter needle moves too fast/pegs too hard...help?
  192. Eico 666 meter movement speed help
  193. Running a tube without heaters
  194. SE-BAL-SE Switching
  195. What makes is stereo?
  196. Triple Checking Calcs: metering bias with mA meter
  197. EL84 & 12AX7 Amp possibilities
  198. Weird issue with tube driver.
  199. 6E5P
  200. 6B4G / 6S4S Biasing Question
  201. Quick tube wear question
  202. Looking for a tube amp
  203. Internal placing of components
  204. Preamplifiers v power amplifiers
  205. LP2 dht driver
  206. hammond 1650
  207. reverb
  208. Load For PSU
  209. *PING* Tubechimp
  210. Revamping of a Michaelson & Austin TVA-1
  211. 6V6 Behavior W/Fixed Bias (SE Amp)
  212. Low noise, low microphony, low hum valves
  213. 6L6 / 12AX7 push-pull
  214. bowei amp for audionote ax-2 speakers?
  215. Yet another Priboi thread...
  216. Help Old Radio Philips
  217. Distortion discussion from mosqueto Hybrid thread
  218. Sovtek 6N1P Microphonics
  219. ECC86 / 6GM8 Radio Receiver Help
  220. Los Angeles
  221. Op point for 6au6/6gu5 in P-G feedback 6550
  222. Tube Pre-Amp Schematic Needed
  223. find a YAQIN 5881a amplifier
  224. 11N90C in the SBCCS circuit
  225. Help replacing a PSU choke - How to choose choke
  226. does this look like a joke to you?
  227. Electronic Choke for Valve Amplifiers
  228. Sockets for a WE429A
  229. To bypass or not to bypass...
  230. DIY Curve Tracer
  231. 300B filament winding center tapped?
  232. help me decide,headphone amp - parafeed or normal tx ?
  233. 7060 vs 6AN8A
  234. Psu
  235. Blackheart amp moding question
  236. EDCOR Output transformer for 300B
  237. 80 or RGN1064 Scenario
  238. TUBENEWB - Quad KT88 Monoblocks
  239. CCS in Differential phase splitter?
  240. Need schematic for Smart 2x150vt
  241. Antek OPT
  242. 6DQ6 for audio power amp?
  243. Anyone identify this Mullard?
  244. My Mullard 5-20: some photos and a question
  245. Tube can work in low volt~~fix your knowledge
  246. A problem with a tube receiver
  247. Auto Transformer - safety advice
  248. Where I could find tube in San Jose
  249. 6Н30П spice model for MicroCap ?
  250. Transformer input and resonance

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