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  1. Parafeed with NP electrolytic?
  2. Charlie K - RIP
  3. Need some advise with a hum problem
  4. What resistor should I use?
  5. IN18 nixies
  6. Tubelab SE build and power supply questions.
  7. Quality of S5's K-12G in proposed system
  8. Gibson EH 150 restoration
  9. Transformer volume control questions.
  10. Power transformer star ground
  11. Shielding and chassis
  12. Side project - d3a and 6c41c
  13. Cathode-heater leakage
  14. Bell 2122 volume drop off
  15. -500V Maida regulator inquiry
  16. 7591 is glowing RED
  17. Hum problem
  18. Need PS schematic for Musical Machine
  19. Polystyrene capacitor as coupling in output tube stages
  20. Help needed with 10M45S integration .
  21. Ultrasonic Cleaning??????
  22. The daunting world of tubes (where to start)
  23. help 124.3 vac
  24. Bat VK3i buzzing noise
  25. Audioromy FU13 (813) diagram and mods
  26. any complete schematic for 6ak5?
  27. Weird fuzz from Aikido Pre, HELP!
  28. Question about tube amplifier.
  29. 811a rating question
  30. Anode chokes DIY?
  31. EI laminations in Europe
  32. Needed: transformer core materials cobalt nickel
  33. Anybody from Italy - please help
  34. Bogen AP35 amp problem
  35. Question about a VR screen supply
  36. DIY Amp Contest in Japan
  37. Hot 5AR4/GZ34 arcing on powerup surge?
  38. Rh84 Ptx
  39. Buzz. Grounding-related?
  40. 50/60Hz Hum - Your Expert Opinion Please
  41. Static Gm test
  42. High Voltage negative regulators
  43. where do i find old tube car radio schematics?
  44. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  45. capacitors
  46. Wire Types
  47. Weird EH12AY7 Problem
  48. Pot and knob compatability
  49. ECC8100 and ECC2000
  50. DHT experts, i need your help
  51. transformers
  52. Vetruvio class-A
  53. PP to balanced input
  54. KT88 AB2 Experiences
  55. Group buy pulse check for Pete Millett tube crossover PCB
  56. Calculating operating point of a DHT
  57. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  58. McIntosh MC-3500 Schematic Information
  59. Use 2X SE output transformers fo 1x PP
  60. 12B4a spice model.
  61. Help identifying a capacitor
  62. recommended a tube amp for Celestron Studio Ditton 66's
  63. Help needed with bias circuit
  64. 220 Mega Ohm Resistor - Really
  65. How to bias DH dual triodes?
  66. Any of these tubes good for audio applications?
  67. DIY AN M7 need help !!!
  68. Need schematic for Bell 2420 amp
  69. new SimpleSE build
  70. My Citation II Rebuild
  71. KT88 cathode resistors?
  72. Dynaco ST35 boards
  73. Triode strapping a 6V6 (or any tetrode/pentode, really)
  74. ECC 83 + ELL 80 maybe?
  75. need amp suggestions please.
  76. Phase splitter which tube?
  77. WANTED: 12B4A tubes
  78. re-stacking an output transformer
  79. A directly heated triode or Pentode SE amp on a Budget
  80. Annoying high frequency ringing from my 832 tube amp
  81. 30 Amp Knobs
  82. A question about audio interconnects for the ones here with such knowledge.
  83. Hi-end GM70 amplifier with only 2 stages
  84. Paragon
  85. Simple SE with CCS and fixed bias
  86. Idea(s) for simple HV regulated psu
  87. NOS Philips "miniwatt/dario" tubes
  88. Hybrid Class D with 6n6p tubes
  89. Any ideas how to estimate VA or mA of Power Tranny
  90. 6L6 Grid resistors??
  91. HeathKit W-2: Missing Tube
  92. Edcor CXSE25-8-5K Dimensions
  93. Bias Pots
  94. Negative Feedback
  95. scott 299D output transformers?
  96. chocke anode load, please explain me..
  97. Integrated HiEnd Amp
  98. Looking for advice/tips regarding simple SE amplifer
  99. Tube amps from vintage RTR's?
  100. componet upgrade
  101. What is "AA" ?
  102. question about twin triode tubes
  103. Building a preamp - somewhat new to tubes
  104. need some guidance about tube amplifiers
  105. Blackgate FK 10000 uF ??
  106. PT failure dangers
  107. Outer foil k40y-9
  108. sansui 1000a maintenance
  109. filter cap question
  110. add UL tap for 125ese
  111. Bogen D070 Amp - HELP w/ INFO.
  112. Humming asl 2004dt wave pre amp
  113. Cany anyone supply any info. about this amplifier?
  114. Low voltage 845SE with 300B driver
  115. Cabinet Help!!!!
  116. dc heater supply help
  117. gu-29 tube
  118. LTP question
  119. Over 500V rated electrolytics?
  120. Fireplug? (inline fuse)
  121. Help! Flash-over on my amp :-(
  122. 6550 drive question
  123. 4211D Amp?
  124. Please, reccomand me about 7233 GE NOS
  125. Help! Schematic Conrad Johnson Premier 3
  126. Tubelab SE in parallel?
  127. Just an Idea?
  128. Tried this out, but needs more gain. . .
  129. EL34 Power Stage
  130. Daven Question
  131. How many rectifiers can have mesh plates?
  132. Real Quick Question!!
  133. Wattage of vintage resistors ?
  134. What is the signal path -- the red line?
  135. Hi-end definitive vacuum tube phono pre
  136. Resistors for Stepped Attenuator
  137. dual rectifier clone....
  138. Motorola Console Salvage
  139. single endedtransformer coupled 6sn7 mic preamp
  140. Brett's 12B4 schematic?
  141. insulated turret terminals
  142. Building first tube power amplifier, reccomendations?
  143. Can you use a MOSFET as a cathodyne
  144. Resolving cold midrange in 5687 circuit
  145. 829B SE Comments????
  146. Shielding and regulator location in the KTA 26 preamp
  147. Voice of music, antique or reproduction?
  148. Quick Question - Audio Note M1 or AR SP-6?
  149. Red Light District/Baby Huey (EL84 P-P) Output Iron
  150. help with PSE design
  151. Tantalum VS CC & metalfilm
  152. Rise-time question
  153. Have an odd problem with my Aikido.
  154. Weird Hybrid Splitter (equal impedances?)
  155. Tube 6550 to test
  156. Using semiconductor curvetracer for tubes...
  157. Question regarding 3rd wire grounding and safety
  158. Plate Current VS Plate Voltage Graphs
  159. Toggle Switch Contact Type and Rating
  160. Inside information on Shuguang
  161. 6N6P vs. 6N6P-I
  162. Technical Survey Paper -- Need Some Help!
  163. VOLTAGE DOUBLER : drop in current?
  164. Using genetic algorithms to optimize pentode parameters
  165. Favorite size wire for signal wiring?
  166. Any idea what this thing is?
  167. Breadboarding Poindexter's 6GK5/EL34 Music Machine
  168. anyone ever use el86/6cw5?
  169. bad 5ar4?
  170. 6DJ8 biasing question
  171. Is it worth using anything other than DHTs for preamps?
  172. Billington Export Ltd Tubes?
  173. 845SE : comments on this circuit?
  174. Tip-Restoring Vintage Pot
  175. B+ Delay - Is this a problem?
  176. Toroids in SET
  177. I have to sell my Pyramid-V prototype...
  178. Stealing a preamp
  179. OLD GOLD, or something I can dissassemble and use
  180. CF PP design
  181. Preamp Idea
  182. Metal Oxide Screen Stoppers
  183. Splitting up power supply inductance
  184. Back to Back transformers and safety ground
  185. Vintage tube tester
  186. 7 pin ECC81.
  187. 26 Driver Tube for 45 - Operating Points
  188. My New pre-amplifier£¡
  189. Echocord Super Question
  190. High quality matching panel meters?
  191. 6BY5GA question
  192. Seeking schematic for Conn organ amp
  193. Will this work as a differential stage?
  194. Tube ID and suggestions
  195. 6L6 to EL34 conversion
  196. my saturation test ??
  197. DO-35 diode inside vacuum tube ?
  198. Transformer Polarity
  199. Modular Gain Stages for Tube Guitar Amp
  200. Where to go for tube gear in Hong Kong?
  201. EL84 Shunt reg for pre-amp, 85A1?
  202. Tube Preamp Idea
  203. UTC Linear Standard High Level matching transformers
  204. Manley Compact 160w noise problem -please help
  205. D3a Experimenters Breadboard Project
  206. Dtmm
  207. Running Single Ended 6V6 in Triode Mode
  208. 6v6pp Finished
  209. Stereo Buffer with a single twin triode
  210. Marshall volume drop off help
  211. Anybody recognize this pentode?
  212. Original schemes of amplifiers for 45 tubes of 1920 and 1930 years?
  213. My new amplifier£_300BSE!
  214. low zout vs output transfo
  215. can't find valve art tube - and glowey tube pic
  216. Which Phono Pre???
  217. EICO HF-20 Guitar Amp Convert
  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. An Odd Duck -- Gibson BR-6f Guitar Amp
  229. Covi Mark II OTL Help
  230. Volume pot between triodes?
  231. Series Pass Transistor for TL-783
  232. Anyone else have the new Mullard EL34's?
  233. VR tubes in single ended circuits
  234. Transformer for Tube Amps?
  235. "Magga Amp Workshop" builds again (Simple 45 Project)
  236. How to handle Reclaimed Transformers
  237. Dual supply...
  238. How much would this cost/how complicated would this be...
  239. low cost DHT hum pots vendors?
  240. Tube Buffer – question?
  241. Bogen CHB 10A questions
  242. 12B4 Preamp
  243. adding output tubes etc to pre amp
  244. primaluna dialogue 5 and fanboys?
  245. yaqin mc-100b
  246. KT88 in place of 6550?
  247. Tube manaul data sheets
  248. Need a bias supply how??
  249. Wouldn't you just love to have these!. United Electronics 211's
  250. Using single tube of Dual

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