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

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