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  1. Mullard Articles
  2. SimpleSE - motor run cap specs
  3. Can I reverse leads on an OT?
  4. 9 pin version of a 6SJ7?
  5. 6550 stock ?
  6. Fisher Tube Tuner Restoration Walkthrough
  7. Futterman H-3
  8. simple 6080/6as7 ppp/circlotron project
  9. My unbalanced preamp problem
  10. Gu50
  11. Any Simple CX310 SE schematics around?
  12. Peavey "Super Festival" VTA-400 - upgrading to 400W?
  13. Two EI Power Transformers Orientation?
  14. Question on Hybrid Bridge using 5AR4
  15. Recommend a project for a n00b
  16. Help! el34 8pin to 7pin conversion
  17. Converting Yarland FV-34AIII to Triode and Zero NF
  18. 5U4GB PS question
  19. 6X8 Pentode/Triode Musings
  20. DDD mfg co High Voltage power supply?
  21. Mistake on OPT connections : have I damaged something ?
  22. Looking for Jim Morrison Siren Song preamp schematic
  23. cap question....
  24. Ming Da MC368-B90
  25. single tube to drive 300ohm headphones
  26. Negative Feedback?
  27. Capacitor voltage ratings
  28. Possible to convert an oscilloscope into a tube amp?
  29. "Junkbox" 2A5 SE
  30. Power supply testing
  31. Tubeamp power supply - LC question
  32. tube amp coupling cap - audiospace
  33. Radford pentode-triode LTP splitter
  34. Tube bias testers, your opinions, please.
  35. Just saw this and thought I'd pass it along. . .
  36. 6KG6-EL509-EL519 Schematics wanted
  37. Difference between SE output transformer and push-pull output transformers
  38. Sourcing OPTs in Australia
  39. Is there a LOCTAL equiv to a 6V6?
  40. 10m45s LTspice model
  41. What circuit and tube to be used
  42. experimental 6L6G / 6BG6G amp design brainstorm
  43. 29GK6 heater current?
  44. Bench PS: stacking DC supplies
  45. Mr Liung schematics
  46. Want to build tube amp
  47. Runaway bias on Hot Rod Deville
  48. Back to back transformers.
  49. Using Battery for 300v B+ ?
  50. Anyone recognice this RIAA?
  51. Power cord replacement
  52. Negative LTP CCS supply
  53. c-j pre amp blowing tubes?
  54. first amp build
  55. Tube Mic Preamp - which Edcor transformer?
  56. Scaling the SLCF for other voltage - help
  57. Question about Allied & Hammond Power Transformer Ratings
  58. Education
  59. Tubelab SE with a 6BX7 to drive 845s
  60. Bias Ground
  61. Suggestions for RIAA preamp?
  62. External Test Points
  63. b2spice model request
  64. 12aY 7 preamp out
  65. 3B7 Loctal DHT
  66. Aikido All in One line stage amp PCB
  67. SS power supply.
  68. 6AU6 pentodes
  69. Parafeed with NP electrolytic?
  70. Charlie K - RIP
  71. Need some advise with a hum problem
  72. What resistor should I use?
  73. IN18 nixies
  74. Tubelab SE build and power supply questions.
  75. Quality of S5's K-12G in proposed system
  76. Gibson EH 150 restoration
  77. Transformer volume control questions.
  78. Power transformer star ground
  79. Shielding and chassis
  80. Side project - d3a and 6c41c
  81. Cathode-heater leakage
  82. Bell 2122 volume drop off
  83. -500V Maida regulator inquiry
  84. 7591 is glowing RED
  85. Hum problem
  86. Need PS schematic for Musical Machine
  87. Polystyrene capacitor as coupling in output tube stages
  88. Help needed with 10M45S integration .
  89. Ultrasonic Cleaning??????
  90. The daunting world of tubes (where to start)
  91. help 124.3 vac
  92. Bat VK3i buzzing noise
  93. Audioromy FU13 (813) diagram and mods
  94. any complete schematic for 6ak5?
  95. Weird fuzz from Aikido Pre, HELP!
  96. Question about tube amplifier.
  97. 811a rating question
  98. Anode chokes DIY?
  99. EI laminations in Europe
  100. Needed: transformer core materials cobalt nickel
  101. Anybody from Italy - please help
  102. Bogen AP35 amp problem
  103. Question about a VR screen supply
  104. DIY Amp Contest in Japan
  105. Hot 5AR4/GZ34 arcing on powerup surge?
  106. Rh84 Ptx
  107. Buzz. Grounding-related?
  108. 50/60Hz Hum - Your Expert Opinion Please
  109. Static Gm test
  110. High Voltage negative regulators
  111. where do i find old tube car radio schematics?
  112. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  113. capacitors
  114. Wire Types
  115. Weird EH12AY7 Problem
  116. Pot and knob compatability
  117. ECC8100 and ECC2000
  118. DHT experts, i need your help
  119. transformers
  120. Vetruvio class-A
  121. PP to balanced input
  122. KT88 AB2 Experiences
  123. Group buy pulse check for Pete Millett tube crossover PCB
  124. Calculating operating point of a DHT
  125. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  126. McIntosh MC-3500 Schematic Information
  127. Use 2X SE output transformers fo 1x PP
  128. 12B4a spice model.
  129. Help identifying a capacitor
  130. recommended a tube amp for Celestron Studio Ditton 66's
  131. Help needed with bias circuit
  132. 220 Mega Ohm Resistor - Really
  133. How to bias DH dual triodes?
  134. Any of these tubes good for audio applications?
  135. DIY AN M7 need help !!!
  136. Need schematic for Bell 2420 amp
  137. new SimpleSE build
  138. My Citation II Rebuild
  139. KT88 cathode resistors?
  140. Dynaco ST35 boards
  141. Triode strapping a 6V6 (or any tetrode/pentode, really)
  142. ECC 83 + ELL 80 maybe?
  143. need amp suggestions please.
  144. Phase splitter which tube?
  145. WANTED: 12B4A tubes
  146. re-stacking an output transformer
  147. A directly heated triode or Pentode SE amp on a Budget
  148. Annoying high frequency ringing from my 832 tube amp
  149. 30 Amp Knobs
  150. A question about audio interconnects for the ones here with such knowledge.
  151. Hi-end GM70 amplifier with only 2 stages
  152. Paragon
  153. Simple SE with CCS and fixed bias
  154. Idea(s) for simple HV regulated psu
  155. NOS Philips "miniwatt/dario" tubes
  156. Hybrid Class D with 6n6p tubes
  157. Any ideas how to estimate VA or mA of Power Tranny
  158. 6L6 Grid resistors??
  159. HeathKit W-2: Missing Tube
  160. Edcor CXSE25-8-5K Dimensions
  161. Bias Pots
  162. Negative Feedback
  163. scott 299D output transformers?
  164. chocke anode load, please explain me..
  165. Integrated HiEnd Amp
  166. Looking for advice/tips regarding simple SE amplifer
  167. Tube amps from vintage RTR's?
  168. componet upgrade
  169. What is "AA" ?
  170. question about twin triode tubes
  171. Building a preamp - somewhat new to tubes
  172. need some guidance about tube amplifiers
  173. Blackgate FK 10000 uF ??
  174. PT failure dangers
  175. Outer foil k40y-9
  176. sansui 1000a maintenance
  177. filter cap question
  178. add UL tap for 125ese
  179. Bogen D070 Amp - HELP w/ INFO.
  180. Humming asl 2004dt wave pre amp
  181. Cany anyone supply any info. about this amplifier?
  182. Low voltage 845SE with 300B driver
  183. Cabinet Help!!!!
  184. dc heater supply help
  185. gu-29 tube
  186. LTP question
  187. Over 500V rated electrolytics?
  188. Fireplug? (inline fuse)
  189. Help! Flash-over on my amp :-(
  190. 6550 drive question
  191. 4211D Amp?
  192. Please, reccomand me about 7233 GE NOS
  193. Help! Schematic Conrad Johnson Premier 3
  194. Tubelab SE in parallel?
  195. Just an Idea?
  196. Tried this out, but needs more gain. . .
  197. EL34 Power Stage
  198. Daven Question
  199. How many rectifiers can have mesh plates?
  200. Real Quick Question!!
  201. Wattage of vintage resistors ?
  202. What is the signal path -- the red line?
  203. Hi-end definitive vacuum tube phono pre
  204. Resistors for Stepped Attenuator
  205. dual rectifier clone....
  206. Motorola Console Salvage
  207. single endedtransformer coupled 6sn7 mic preamp
  208. Brett's 12B4 schematic?
  209. insulated turret terminals
  210. Building first tube power amplifier, reccomendations?
  211. Can you use a MOSFET as a cathodyne
  212. Resolving cold midrange in 5687 circuit
  213. 829B SE Comments????
  214. Shielding and regulator location in the KTA 26 preamp
  215. Voice of music, antique or reproduction?
  216. Quick Question - Audio Note M1 or AR SP-6?
  217. Red Light District/Baby Huey (EL84 P-P) Output Iron
  218. help with PSE design
  219. Tantalum VS CC & metalfilm
  220. Rise-time question
  221. Have an odd problem with my Aikido.
  222. Weird Hybrid Splitter (equal impedances?)
  223. Tube 6550 to test
  224. Using semiconductor curvetracer for tubes...
  225. Question regarding 3rd wire grounding and safety
  226. Plate Current VS Plate Voltage Graphs
  227. Toggle Switch Contact Type and Rating
  228. Inside information on Shuguang
  229. 6N6P vs. 6N6P-I
  230. Technical Survey Paper -- Need Some Help!
  231. VOLTAGE DOUBLER : drop in current?
  232. Using genetic algorithms to optimize pentode parameters
  233. Favorite size wire for signal wiring?
  234. Any idea what this thing is?
  235. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  236. anyone ever use el86/6cw5?
  237. bad 5ar4?
  238. 6DJ8 biasing question
  239. Is it worth using anything other than DHTs for preamps?
  240. Billington Export Ltd Tubes?
  241. 845SE : comments on this circuit?
  242. Tip-Restoring Vintage Pot
  243. B+ Delay - Is this a problem?
  244. Toroids in SET
  245. I have to sell my Pyramid-V prototype...
  246. Stealing a preamp
  247. OLD GOLD, or something I can dissassemble and use
  248. CF PP design
  249. Preamp Idea
  250. Metal Oxide Screen Stoppers

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