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  1. Sourcing OPTs in Australia
  2. Is there a LOCTAL equiv to a 6V6?
  3. 10m45s LTspice model
  4. What circuit and tube to be used
  5. experimental 6L6G / 6BG6G amp design brainstorm
  6. 29GK6 heater current?
  7. Mr Liung schematics
  8. Want to build tube amp
  9. Back to back transformers.
  10. Using Battery for 300v B+ ?
  11. Anyone recognice this RIAA?
  12. Power cord replacement
  13. Negative LTP CCS supply
  14. c-j pre amp blowing tubes?
  15. first amp build
  16. Tube Mic Preamp - which Edcor transformer?
  17. Scaling the SLCF for other voltage - help
  18. Question about Allied & Hammond Power Transformer Ratings
  19. Education
  20. Bias Ground
  21. Suggestions for RIAA preamp?
  22. External Test Points
  23. 12aY 7 preamp out
  24. 3B7 Loctal DHT
  25. Aikido All in One line stage amp PCB
  26. SS power supply.
  27. 6AU6 pentodes
  28. Parafeed with NP electrolytic?
  29. Charlie K - RIP
  30. Need some advise with a hum problem
  31. IN18 nixies
  32. Quality of S5's K-12G in proposed system
  33. Transformer volume control questions.
  34. Power transformer star ground
  35. Shielding and chassis
  36. Side project - d3a and 6c41c
  37. Cathode-heater leakage
  38. Bell 2122 volume drop off
  39. -500V Maida regulator inquiry
  40. 7591 is glowing RED
  41. Hum problem
  42. Need PS schematic for Musical Machine
  43. Polystyrene capacitor as coupling in output tube stages
  44. Help needed with 10M45S integration .
  45. The daunting world of tubes (where to start)
  46. help 124.3 vac
  47. Bat VK3i buzzing noise
  48. Audioromy FU13 (813) diagram and mods
  49. any complete schematic for 6ak5?
  50. Weird fuzz from Aikido Pre, HELP!
  51. Question about tube amplifier.
  52. 811a rating question
  53. Anode chokes DIY?
  54. Needed: transformer core materials cobalt nickel
  55. Anybody from Italy - please help
  56. Bogen AP35 amp problem
  57. Question about a VR screen supply
  58. DIY Amp Contest in Japan
  59. Hot 5AR4/GZ34 arcing on powerup surge?
  60. Rh84 Ptx
  61. Buzz. Grounding-related?
  62. 50/60Hz Hum - Your Expert Opinion Please
  63. Static Gm test
  64. High Voltage negative regulators
  65. where do i find old tube car radio schematics?
  66. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  67. Weird EH12AY7 Problem
  68. ECC8100 and ECC2000
  69. DHT experts, i need your help
  70. transformers
  71. Vetruvio class-A
  72. PP to balanced input
  73. KT88 AB2 Experiences
  74. Group buy pulse check for Pete Millett tube crossover PCB
  75. Calculating operating point of a DHT
  76. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  77. McIntosh MC-3500 Schematic Information
  78. Use 2X SE output transformers fo 1x PP
  79. 12B4a spice model.
  80. recommended a tube amp for Celestron Studio Ditton 66's
  81. Help needed with bias circuit
  82. How to bias DH dual triodes?
  83. Any of these tubes good for audio applications?
  84. DIY AN M7 need help !!!
  85. Need schematic for Bell 2420 amp
  86. new SimpleSE build
  87. My Citation II Rebuild
  88. KT88 cathode resistors?
  89. Dynaco ST35 boards
  90. Triode strapping a 6V6 (or any tetrode/pentode, really)
  91. ECC 83 + ELL 80 maybe?
  92. need amp suggestions please.
  93. Phase splitter which tube?
  94. WANTED: 12B4A tubes
  95. re-stacking an output transformer
  96. A directly heated triode or Pentode SE amp on a Budget
  97. Annoying high frequency ringing from my 832 tube amp
  98. 30 Amp Knobs
  99. A question about audio interconnects for the ones here with such knowledge.
  100. Hi-end GM70 amplifier with only 2 stages
  101. Paragon
  102. Idea(s) for simple HV regulated psu
  103. NOS Philips "miniwatt/dario" tubes
  104. Hybrid Class D with 6n6p tubes
  105. Any ideas how to estimate VA or mA of Power Tranny
  106. 6L6 Grid resistors??
  107. HeathKit W-2: Missing Tube
  108. Edcor CXSE25-8-5K Dimensions
  109. Bias Pots
  110. Negative Feedback
  111. scott 299D output transformers?
  112. chocke anode load, please explain me..
  113. Integrated HiEnd Amp
  114. Tube amps from vintage RTR's?
  115. componet upgrade
  116. What is "AA" ?
  117. question about twin triode tubes
  118. Building a preamp - somewhat new to tubes
  119. need some guidance about tube amplifiers
  120. Blackgate FK 10000 uF ??
  121. PT failure dangers
  122. sansui 1000a maintenance
  123. filter cap question
  124. add UL tap for 125ese
  125. Bogen D070 Amp - HELP w/ INFO.
  126. Humming asl 2004dt wave pre amp
  127. Cany anyone supply any info. about this amplifier?
  128. Low voltage 845SE with 300B driver
  129. dc heater supply help
  130. gu-29 tube
  131. LTP question
  132. Over 500V rated electrolytics?
  133. Fireplug? (inline fuse)
  134. Help! Flash-over on my amp :-(
  135. 6550 drive question
  136. 4211D Amp?
  137. Please, reccomand me about 7233 GE NOS
  138. Help! Schematic Conrad Johnson Premier 3
  139. Just an Idea?
  140. Tried this out, but needs more gain. . .
  141. EL34 Power Stage
  142. Daven Question
  143. How many rectifiers can have mesh plates?
  144. Real Quick Question!!
  145. Wattage of vintage resistors ?
  146. What is the signal path -- the red line?
  147. Hi-end definitive vacuum tube phono pre
  148. dual rectifier clone....
  149. Motorola Console Salvage
  150. single endedtransformer coupled 6sn7 mic preamp
  151. Brett's 12B4 schematic?
  152. Building first tube power amplifier, reccomendations?
  153. Can you use a MOSFET as a cathodyne
  154. Resolving cold midrange in 5687 circuit
  155. 829B SE Comments????
  156. Shielding and regulator location in the KTA 26 preamp
  157. Voice of music, antique or reproduction?
  158. Quick Question - Audio Note M1 or AR SP-6?
  159. Red Light District/Baby Huey (EL84 P-P) Output Iron
  160. help with PSE design
  161. Tantalum VS CC & metalfilm
  162. Rise-time question
  163. Have an odd problem with my Aikido.
  164. Weird Hybrid Splitter (equal impedances?)
  165. Tube 6550 to test
  166. Question regarding 3rd wire grounding and safety
  167. Plate Current VS Plate Voltage Graphs
  168. Inside information on Shuguang
  169. 6N6P vs. 6N6P-I
  170. Technical Survey Paper -- Need Some Help!
  171. VOLTAGE DOUBLER : drop in current?
  172. Using genetic algorithms to optimize pentode parameters
  173. Any idea what this thing is?
  174. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  175. anyone ever use el86/6cw5?
  176. bad 5ar4?
  177. 6DJ8 biasing question
  178. Is it worth using anything other than DHTs for preamps?
  179. Billington Export Ltd Tubes?
  180. 845SE : comments on this circuit?
  181. Tip-Restoring Vintage Pot
  182. B+ Delay - Is this a problem?
  183. Toroids in SET
  184. I have to sell my Pyramid-V prototype...
  185. Stealing a preamp
  186. OLD GOLD, or something I can dissassemble and use
  187. CF PP design
  188. Preamp Idea
  189. Metal Oxide Screen Stoppers
  190. Splitting up power supply inductance
  191. Back to Back transformers and safety ground
  192. 7 pin ECC81.
  193. 26 Driver Tube for 45 - Operating Points
  194. My New pre-amplifier£¡
  195. 6BY5GA question
  196. Will this work as a differential stage?
  197. Tube ID and suggestions
  198. 6L6 to EL34 conversion
  199. my saturation test ??
  200. DO-35 diode inside vacuum tube ?
  201. Transformer Polarity
  202. Where to go for tube gear in Hong Kong?
  203. EL84 Shunt reg for pre-amp, 85A1?
  204. Tube Preamp Idea
  205. UTC Linear Standard High Level matching transformers
  206. Manley Compact 160w noise problem -please help
  207. D3a Experimenters Breadboard Project
  208. Dtmm
  209. Running Single Ended 6V6 in Triode Mode
  210. 6v6pp Finished
  211. Stereo Buffer with a single twin triode
  212. Anybody recognize this pentode?
  213. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  214. My new amplifier£_300BSE!
  215. low zout vs output transfo
  216. can't find valve art tube - and glowey tube pic
  217. Which Phono Pre???
  218. BB 1702 DAC + transformer I/V ?
  219. aikido build thread-
  220. Triode Connected 6BK5
  221. need help in building tube amplifier 10 watter
  222. Parasitic oscillations in general
  223. Help Russian tube experts.
  224. forced aircooling
  225. Dirty Cheap Vintage Pot Fix - Your Opinion Please
  226. ask jan first
  227. running 6S4S/6C4C hot .. calling widowmaker
  228. Covi Mark II OTL Help
  229. Volume pot between triodes?
  230. Series Pass Transistor for TL-783
  231. Anyone else have the new Mullard EL34's?
  232. VR tubes in single ended circuits
  233. Transformer for Tube Amps?
  234. "Magga Amp Workshop" builds again (Simple 45 Project)
  235. How to handle Reclaimed Transformers
  236. Dual supply...
  237. How much would this cost/how complicated would this be...
  238. Tube Buffer – question?
  239. Bogen CHB 10A questions
  240. 12B4 Preamp
  241. adding output tubes etc to pre amp
  242. primaluna dialogue 5 and fanboys?
  243. yaqin mc-100b
  244. KT88 in place of 6550?
  245. Tube manaul data sheets
  246. Need a bias supply how??
  247. Wouldn't you just love to have these!. United Electronics 211's
  248. Using single tube of Dual
  249. 21st century tube? Non-Vacuum
  250. making two minibloks for stereo

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