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  1. Highest Practical Primary Z in OPT?
  2. Ampex 6v6 PP Modifications
  3. Variability of RIAA eq with tube characteristics?
  4. 807/350B/6L6 PP amps PSU ?
  5. Need Help For Tube Amp
  6. ECC83 300B Loftin White amp
  7. Hashimoto and the wonderful 45
  8. Capacitor identification–old PIO?
  9. Heathkit variac
  10. E80L pentode mode as driver?
  11. Transformer repair
  12. How many ga for chassis wire?
  13. I want to MOD - help?
  14. What About Beam Deflection Tubes?
  15. Capacitor
  16. Placement of Ultralinear Tap On Homemade Transformer
  17. Differential stage with CCS in cathode
  18. Directly heated Cathode/insulation question
  19. "Dirt Cheap SE" 6BM8 spud amp
  20. Single-end Power amp with tubes
  21. Input pot question
  22. Need help putting 6Z4 into PSU Designer
  23. SimpleSE Under Chassis Mounting
  24. Bias methods?
  25. Aikido and SE KT88
  26. Built this pre amp today!
  27. Mystery tube in a Fisher FM-90X - V50,064
  28. Switch contacts for HV supply
  29. The First Sound Recording - we can hear it finally
  30. RCA made in Japan???????
  31. 6V6GT in the SimpleSE
  32. trimmings for amp project
  33. Tube Preamp Hybrid new builder, lots of question!
  34. Chinese mini bias pots
  35. GU-50, GM70 and KT88
  36. Please recommend me an amplifier design.
  37. Single-ended OR push-pull?
  38. Darling in Europe... (110 vs. 220)
  39. DC heater (+/-) -> elevated?
  40. Tubelab simple SE help needed...working but only on one channel
  41. Yaqin MS-300B SET amp
  42. 300b calibration (tubelab)
  43. Sonics of a "dynamic coupled" driver
  44. 716p's Vs. Fancy Caps
  45. ELL80
  46. Will this work?
  47. What circuit to build with MQ TL-404
  48. Very low output from Knight KN928 amp
  49. 6GK5 to drive a 6AS7?
  50. Plate Heater Dissipators
  51. preamp suitable for Dynaco st-70- OTHER than dynaco
  52. 'EL34 World' website for music amps
  53. Strange Russian(?) tube tester
  54. is this possible?
  55. Power transformer impedance
  56. Anybody did compared tube vs opamp for preamp ?
  57. The days of wine, roses & WE205D
  58. I need to ask...
  59. SPICE model for 6AK5 wanted!
  60. Differences with 6C33 Tube Types
  61. mugen hybride
  62. 1st Build - Kit or No Kit
  63. feedback problems
  64. Antique Electric Supply
  65. Highs
  66. ELK bass amp, mono, twin OPT's (?)
  67. Anyone have a "handle" on the Yaqin EL34 X 2 SE AMP?
  68. Suggestions on books
  69. Cathode stripping in low voltage tubes
  70. Current to overcome 6.5 uuF input capacitance?
  71. Help me to work on the damping factor of my 845 SET
  72. Y A A B - Yet Another Aikido Build
  73. Music Angel - Help wanted
  74. Calculating PS current for octal Aikido
  75. X-10d
  76. wirewound vs standard pots
  77. Anyone famaliar with the 485 tube?
  78. Ideas for ground plane/shielding?
  79. TESLA E88CC 6922 Tubes shorting out???????
  80. Will My Ipod Benefit Through a Tube Amp?
  81. PSU for testing circuits
  82. easier way to cut a square hole for xmfr
  83. Combine left & right for sub
  84. Noisy Squeal from SE amp
  85. Plate Choke calculation
  86. Audio Cable Deathmatch!
  87. tubelab PP?
  88. replacing op-amps with thermionic valves
  89. aikido heater
  90. Heathkit W 5M output transformers
  91. 6S19 Circlotron (OTL)
  92. Quality of Hammond 1600 series transformers and a question about loading.
  93. Kuei Yang Wang's 6sn7 linestage
  94. E-mu 0202 + audiotester
  95. Where to buy HT toroids ?
  96. CJ 1.4: Power tubes are working but drivers not ! Help please.
  97. A 6SN7 direct coupled preamp & regulated supply for everyone's perusal.
  98. Slight hum from my new soldering station.
  99. phono stage
  100. 6sn7gtb problem
  101. The old man told me to get it all out of the basement
  102. The Look of Preamp Hum
  103. hookup wire options
  104. Tubelab Simple Se Trannie Shopping List-a Newbie Seeks Info
  105. Testing Amplifiers / Pad
  106. Volume Pot vs Stepped Attenuater
  107. Which tubes should I use?
  108. KT88s and grid current
  109. Gain stage with g2-feedback.
  110. K-502 Left Channel is out
  111. 12B4 help needed
  112. Power Trans question
  113. Noob amp wiring question...
  114. 5842 - russian ripoff
  115. Ruskie tube questions
  116. Opt placement
  117. 807 AB2 oscillation maybe?
  118. Amazon Does DIY Parts
  119. Shielded wire
  120. Questions about Tube Amplifiers, Mikael's vs SimpleSE
  121. Where low noise resistors matter
  122. funky power supply
  123. Choke loaded PSU versus VR tube regulated PSU?
  124. What would most of you do?
  125. IRFBC20 as source follower drivers for EL34s in AB1 PP
  126. first post, PS for 6em7 SET amp
  127. affordable transformers for KT-88's
  128. Need help with schematic
  129. How many people here use simulators, like LTspice, to help design tube stuff?
  130. newbie question regarding gain reduction
  131. Anybody did try this tube preamp ?
  132. Heathkit UA-2 output tx wiring question
  133. Question about the properties of "matched" tubes
  134. Using a passive direct box to kill ground loop noise?
  135. magnetized power transformer!
  136. Utc A-24
  137. lower cost options for spectrum analyser/ function generator?
  138. Need schematics for Val VP-110S Tube Amp
  139. So What now
  140. What other tubes can I use this OPT for?
  141. Super Junkbox 6S19P SET
  142. Grid stopper resistors
  143. Please evaluate my new EL34 Amp (waveform attached)
  144. Max voltages for EL84?
  145. Tubelab SE finished but need help.
  146. Oscilloscope Probes for Tube Work
  147. ECC88 vs 6SN7
  148. Good (tube) audio shows in the US?
  149. Please help me de-hum my new pre
  150. Help for newbie
  151. Simple ReAmp Mod? Help with Input Impedances, Please!
  152. Which of these two phono stages
  153. Crosley radio
  154. Small tube amp for headphones/computer speakers?(first post)
  155. Peculiar Fisher circuit
  156. Hum in Grounded Grid Pre
  157. Counterpoint SA-1000
  158. K-502 How to select a potentiometer
  159. What are these Christmas light things?
  160. a CHEAP integrated tube amp kit-anybody?
  161. My amp is acting like a transducer!?
  162. Transformer current question
  163. Brimar date codes?
  164. Home made SE 300B amp
  165. Parallel Push Pull 6AS7 or 6080
  166. random crackle ? (McMartin MA-20)
  167. KT88 filament failure - twice on same socket
  168. Solid State Regulator for tube amp
  169. Proposed screen-drive amp design... comments, please?
  170. SimpleSE PCB out of stock
  171. Any good explanation of Passive EQ Filters??
  172. terraplane 300B
  173. Sun Audio transformers
  174. Vacuum State RTP5.
  175. Schematics for Audio Innovations s1000 pre
  176. Tube amp for newbye
  177. 3C24SE amp...
  178. Meixing MingDa MC767-RD
  179. confusing transformer connections
  180. Have to mod K-502 to 4Ohms from 8
  181. SOund of 3B28 vs. 866A
  182. S3E Vacuum Tube
  183. Tube audio & "3 dimensionality"
  184. Darling monoblocks
  185. Testing 350B with B & K 747A
  186. Interstage transformer for balanced amp question
  187. Filament transformer questions
  188. dBm or dBV Audio Voltmeter
  189. VTL MB250 Signature monoblock Manual..
  190. Choke phase spliter
  191. Output transformer DC resistance..
  192. Chassis layout?
  193. Jolida schematic questions
  194. Tube Phono preamp kit?
  195. Does size really matter - SE Output
  196. 437A testing
  197. What to do with a 5k output transfomer?
  198. adapter?
  199. Studer 52
  200. Safety ground question
  201. Old PS questions (EL34 replacement), and any Aus people know BWD?
  202. Darling 1626 amp
  203. Blackheart 5 watt
  204. What is this tube amp
  205. Extry, Extry, Blind Squirrel Finds Nut -sequence
  206. Why is distortion harmonic?
  207. Source for OPT
  208. EL34 to RL12P35 converting
  209. calculating total current draw
  210. Allied Radio (Knight) KA-55 schematic
  211. 6F6G Amplifier
  212. good book/article about using oscilloscopes?
  213. how to attach photos
  214. Is 450V the max of triode strapped 6l6gc
  215. Separate power supply - Umbilical Cord
  216. tube amp being weird -- any ideas
  217. need to discharge psu safely
  218. Jadis DA7/defy power amplifier mods
  219. 5.3v on 6SN7 filament?
  220. The Valve Wizard
  221. Mercury vapor rectifier tube question
  222. An Indiana Yankee in Putin's court.
  223. Switching over to a fixed bias
  224. Dynamic load line analysis using music and speaker load
  225. Capacitance in PSU
  226. preamp line ctt
  227. Genalex KT-88 reissue
  228. Combine EF80 with EL84
  229. 2A3 maximum plate voltage
  230. Amplifier Response Stability & All That.
  231. 100k linear pots, any idea?
  232. 6550, 6L6, or 6V6??
  233. grid-stopper resistor
  234. cathode bypass caps suggestions please for newbie
  235. Need Schematic-H&K B.A.T.T.
  236. 6EJ7 phono preamp?
  237. Impressions of the Ella, a pp EL34
  238. 30L15 / PCC805 - What can I use them for?
  239. Ultra Cheap transformers?
  240. Push-pull output impedance
  241. Tube amp cost
  242. 830b
  243. Leak Tl/12+
  244. Toroid Trafo as choke
  245. in search of a 3c33 dual triode.....
  246. Question about MiniBlok II Schematic
  247. Wavebourn Alligator amplifier
  248. Best Tube Testers?
  249. Rusky version EF86
  250. Melos SHA Gold Issue

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