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  1. My first power supply
  2. Unknown tube similar to px4
  3. Anyone know of some ridiculously powerful triodes for class A useage?
  4. Bias Voltage
  5. Looking for tubes in Germany
  6. Substituting GU50 tubes for KT88
  7. Parts mined from an AKAI 1800L, what to do?
  8. Has anyone built this amp??????
  9. Another TubeLab SimpleSE Build
  10. Output transformers bandwidth/frequency range
  11. 6g6 preamp B+ at 400+????
  12. Which power supply would you use?
  13. Mullard Articles
  14. SimpleSE - motor run cap specs
  15. Can I reverse leads on an OT?
  16. 9 pin version of a 6SJ7?
  17. 6550 stock ?
  18. Fisher Tube Tuner Restoration Walkthrough
  19. Futterman H-3
  20. simple 6080/6as7 ppp/circlotron project
  21. My unbalanced preamp problem
  22. Gu50
  23. Any Simple CX310 SE schematics around?
  24. Peavey "Super Festival" VTA-400 - upgrading to 400W?
  25. Two EI Power Transformers Orientation?
  26. Question on Hybrid Bridge using 5AR4
  27. Recommend a project for a n00b
  28. Help! el34 8pin to 7pin conversion
  29. Converting Yarland FV-34AIII to Triode and Zero NF
  30. 5U4GB PS question
  31. 6X8 Pentode/Triode Musings
  32. DDD mfg co High Voltage power supply?
  33. Mistake on OPT connections : have I damaged something ?
  34. Looking for Jim Morrison Siren Song preamp schematic
  35. cap question....
  36. Ming Da MC368-B90
  37. single tube to drive 300ohm headphones
  38. Negative Feedback?
  39. Capacitor voltage ratings
  40. Possible to convert an oscilloscope into a tube amp?
  41. "Junkbox" 2A5 SE
  42. Power supply testing
  43. Tubeamp power supply - LC question
  44. tube amp coupling cap - audiospace
  45. Radford pentode-triode LTP splitter
  46. Tube bias testers, your opinions, please.
  47. Just saw this and thought I'd pass it along. . .
  48. 6KG6-EL509-EL519 Schematics wanted
  49. Difference between SE output transformer and push-pull output transformers
  50. Sourcing OPTs in Australia
  51. Is there a LOCTAL equiv to a 6V6?
  52. 10m45s LTspice model
  53. What circuit and tube to be used
  54. experimental 6L6G / 6BG6G amp design brainstorm
  55. 29GK6 heater current?
  56. Bench PS: stacking DC supplies
  57. Mr Liung schematics
  58. Want to build tube amp
  59. Runaway bias on Hot Rod Deville
  60. Back to back transformers.
  61. Using Battery for 300v B+ ?
  62. Anyone recognice this RIAA?
  63. Power cord replacement
  64. Negative LTP CCS supply
  65. c-j pre amp blowing tubes?
  66. first amp build
  67. Tube Mic Preamp - which Edcor transformer?
  68. Scaling the SLCF for other voltage - help
  69. Question about Allied & Hammond Power Transformer Ratings
  70. Education
  71. Tubelab SE with a 6BX7 to drive 845s
  72. Bias Ground
  73. Suggestions for RIAA preamp?
  74. External Test Points
  75. b2spice model request
  76. 12aY 7 preamp out
  77. 3B7 Loctal DHT
  78. Aikido All in One line stage amp PCB
  79. SS power supply.
  80. 6AU6 pentodes
  81. Parafeed with NP electrolytic?
  82. Charlie K - RIP
  83. Need some advise with a hum problem
  84. What resistor should I use?
  85. IN18 nixies
  86. Tubelab SE build and power supply questions.
  87. Quality of S5's K-12G in proposed system
  88. Gibson EH 150 restoration
  89. Transformer volume control questions.
  90. Power transformer star ground
  91. Shielding and chassis
  92. Side project - d3a and 6c41c
  93. Cathode-heater leakage
  94. Bell 2122 volume drop off
  95. -500V Maida regulator inquiry
  96. 7591 is glowing RED
  97. Hum problem
  98. Need PS schematic for Musical Machine
  99. Polystyrene capacitor as coupling in output tube stages
  100. Help needed with 10M45S integration .
  101. Ultrasonic Cleaning??????
  102. The daunting world of tubes (where to start)
  103. help 124.3 vac
  104. Bat VK3i buzzing noise
  105. Audioromy FU13 (813) diagram and mods
  106. any complete schematic for 6ak5?
  107. Weird fuzz from Aikido Pre, HELP!
  108. Question about tube amplifier.
  109. 811a rating question
  110. Anode chokes DIY?
  111. EI laminations in Europe
  112. Needed: transformer core materials cobalt nickel
  113. Anybody from Italy - please help
  114. Bogen AP35 amp problem
  115. Question about a VR screen supply
  116. DIY Amp Contest in Japan
  117. Hot 5AR4/GZ34 arcing on powerup surge?
  118. Rh84 Ptx
  119. Buzz. Grounding-related?
  120. 50/60Hz Hum - Your Expert Opinion Please
  121. Static Gm test
  122. High Voltage negative regulators
  123. where do i find old tube car radio schematics?
  124. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  125. capacitors
  126. Wire Types
  127. Weird EH12AY7 Problem
  128. Pot and knob compatability
  129. ECC8100 and ECC2000
  130. DHT experts, i need your help
  131. transformers
  132. Vetruvio class-A
  133. PP to balanced input
  134. KT88 AB2 Experiences
  135. Group buy pulse check for Pete Millett tube crossover PCB
  136. Calculating operating point of a DHT
  137. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  138. McIntosh MC-3500 Schematic Information
  139. Use 2X SE output transformers fo 1x PP
  140. 12B4a spice model.
  141. Help identifying a capacitor
  142. recommended a tube amp for Celestron Studio Ditton 66's
  143. Help needed with bias circuit
  144. 220 Mega Ohm Resistor - Really
  145. How to bias DH dual triodes?
  146. Any of these tubes good for audio applications?
  147. DIY AN M7 need help !!!
  148. Need schematic for Bell 2420 amp
  149. new SimpleSE build
  150. My Citation II Rebuild
  151. KT88 cathode resistors?
  152. Dynaco ST35 boards
  153. Triode strapping a 6V6 (or any tetrode/pentode, really)
  154. ECC 83 + ELL 80 maybe?
  155. need amp suggestions please.
  156. Phase splitter which tube?
  157. WANTED: 12B4A tubes
  158. re-stacking an output transformer
  159. A directly heated triode or Pentode SE amp on a Budget
  160. Annoying high frequency ringing from my 832 tube amp
  161. 30 Amp Knobs
  162. A question about audio interconnects for the ones here with such knowledge.
  163. Hi-end GM70 amplifier with only 2 stages
  164. Paragon
  165. Simple SE with CCS and fixed bias
  166. Idea(s) for simple HV regulated psu
  167. NOS Philips "miniwatt/dario" tubes
  168. Hybrid Class D with 6n6p tubes
  169. Any ideas how to estimate VA or mA of Power Tranny
  170. 6L6 Grid resistors??
  171. HeathKit W-2: Missing Tube
  172. Edcor CXSE25-8-5K Dimensions
  173. Bias Pots
  174. Negative Feedback
  175. scott 299D output transformers?
  176. chocke anode load, please explain me..
  177. Integrated HiEnd Amp
  178. Looking for advice/tips regarding simple SE amplifer
  179. Tube amps from vintage RTR's?
  180. componet upgrade
  181. What is "AA" ?
  182. question about twin triode tubes
  183. Building a preamp - somewhat new to tubes
  184. need some guidance about tube amplifiers
  185. Blackgate FK 10000 uF ??
  186. PT failure dangers
  187. Outer foil k40y-9
  188. sansui 1000a maintenance
  189. filter cap question
  190. add UL tap for 125ese
  191. Bogen D070 Amp - HELP w/ INFO.
  192. Humming asl 2004dt wave pre amp
  193. Cany anyone supply any info. about this amplifier?
  194. Low voltage 845SE with 300B driver
  195. Cabinet Help!!!!
  196. dc heater supply help
  197. gu-29 tube
  198. LTP question
  199. Over 500V rated electrolytics?
  200. Fireplug? (inline fuse)
  201. Help! Flash-over on my amp :-(
  202. 6550 drive question
  203. 4211D Amp?
  204. Please, reccomand me about 7233 GE NOS
  205. Help! Schematic Conrad Johnson Premier 3
  206. Tubelab SE in parallel?
  207. Just an Idea?
  208. Tried this out, but needs more gain. . .
  209. EL34 Power Stage
  210. Daven Question
  211. How many rectifiers can have mesh plates?
  212. Real Quick Question!!
  213. Wattage of vintage resistors ?
  214. What is the signal path -- the red line?
  215. Hi-end definitive vacuum tube phono pre
  216. Resistors for Stepped Attenuator
  217. dual rectifier clone....
  218. Motorola Console Salvage
  219. single endedtransformer coupled 6sn7 mic preamp
  220. Brett's 12B4 schematic?
  221. insulated turret terminals
  222. Building first tube power amplifier, reccomendations?
  223. Can you use a MOSFET as a cathodyne
  224. Resolving cold midrange in 5687 circuit
  225. 829B SE Comments????
  226. Shielding and regulator location in the KTA 26 preamp
  227. Voice of music, antique or reproduction?
  228. Quick Question - Audio Note M1 or AR SP-6?
  229. Red Light District/Baby Huey (EL84 P-P) Output Iron
  230. help with PSE design
  231. Tantalum VS CC & metalfilm
  232. Rise-time question
  233. Have an odd problem with my Aikido.
  234. Weird Hybrid Splitter (equal impedances?)
  235. Tube 6550 to test
  236. Using semiconductor curvetracer for tubes...
  237. Question regarding 3rd wire grounding and safety
  238. Plate Current VS Plate Voltage Graphs
  239. Toggle Switch Contact Type and Rating
  240. Inside information on Shuguang
  241. 6N6P vs. 6N6P-I
  242. Technical Survey Paper -- Need Some Help!
  243. VOLTAGE DOUBLER : drop in current?
  244. Using genetic algorithms to optimize pentode parameters
  245. Favorite size wire for signal wiring?
  246. Any idea what this thing is?
  247. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  248. bad 5ar4?
  249. 6DJ8 biasing question
  250. anyone ever use el86/6cw5?

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