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  1. Stray hum pickup *preamp* cathode R-bias vs. battery bias & 12AU7vs.5687
  2. looking for a website...
  3. Simple 45/2A3 schematic error?
  4. Plate load for push-pull
  5. Hybrid regulator
  6. Hybrid Graetz Bridge
  7. JCM 900 100 Watt Power Trans Specs..
  8. My first amplifier - 6n3c-E
  9. Power supply problem
  10. Grid choke as I/V?
  11. Hammond PR20
  12. 6JN6 screen-drive (g2 driven) plate curves?
  13. Another compactron PP output
  14. 6922 transformer coupled
  15. Beam Deflection Tube Limiter
  16. 6LW6 bias points
  17. Dynaco SCA-35 or Sherwood S5000 iV
  18. SE 6550 class project (continued)
  19. gibson amp lp JR
  20. EL821 / 6CH6 triode curves?
  21. Ground wire adds hum to Harmony H-400A AC/DC amp
  22. "magic" phase splitter for SimpleP-P
  23. Harmon Kardon tube amp kit testing
  24. Did I hurt this capacitor?
  25. (newb) Why no white (-) leads on power trafo
  26. Ruined transformer?
  27. My Tabor Clone is finished.
  28. first build 6em7 and it works
  29. Cleaning up baked enamel/painted finishes
  30. panel meters
  31. Highs roll off
  32. scratch build EAR834p
  33. Silvertone Organ Amp
  34. El156se
  35. One more hybrid idea
  36. Can Anyone figure this?
  37. "Mighty Mite" Single Ended Amplifier
  38. old question - lost answer 6AS7 SE amp
  39. My KT88 SE project
  40. Motorola OPT
  41. Weird Input transformer hum.
  42. cascode vs asymmetrical cathode coupled
  43. music angel 845 SET
  44. Help! My amp stopped singing...
  45. LTP CCS IXYS with 10m45s opinions
  46. Boozhound Choke Tail Pair for HiFi
  47. Bass guitar amp...
  48. 5718 subminiture tube?
  49. fixed bias for push pull tube amps
  50. EC86 and phono
  51. Power Transformer mystery lead....
  52. Bias measurements 6L6
  53. 0A3 Light
  54. Equivalent to Tango NC-10 IT
  55. Ammeter wiring?
  56. Highest Practical Primary Z in OPT?
  57. Ampex 6v6 PP Modifications
  58. Variability of RIAA eq with tube characteristics?
  59. 807/350B/6L6 PP amps PSU ?
  60. Need Help For Tube Amp
  61. ECC83 300B Loftin White amp
  62. Hashimoto and the wonderful 45
  63. Capacitor identification–old PIO?
  64. Heathkit variac
  65. E80L pentode mode as driver?
  66. Transformer repair
  67. How many ga for chassis wire?
  68. 807 Guitar Amplifier
  69. I want to MOD - help?
  70. What About Beam Deflection Tubes?
  71. Capacitor
  72. Placement of Ultralinear Tap On Homemade Transformer
  73. Differential stage with CCS in cathode
  74. Directly heated Cathode/insulation question
  75. "Dirt Cheap SE" 6BM8 spud amp
  76. isolation transformer won't supply filiments - 1968 Harmony H400A tube guitar amp
  77. Single-end Power amp with tubes
  78. Input pot question
  79. Need help putting 6Z4 into PSU Designer
  80. SimpleSE Under Chassis Mounting
  81. Bias methods?
  82. Aikido and SE KT88
  83. Built this pre amp today!
  84. Mystery tube in a Fisher FM-90X - V50,064
  85. Switch contacts for HV supply
  86. The First Sound Recording - we can hear it finally
  87. RCA made in Japan???????
  88. 6V6GT in the SimpleSE
  89. trimmings for amp project
  90. Tube Preamp Hybrid new builder, lots of question!
  91. Chinese mini bias pots
  92. GU-50, GM70 and KT88
  93. Please recommend me an amplifier design.
  94. Single-ended OR push-pull?
  95. Darling in Europe... (110 vs. 220)
  96. DC heater (+/-) -> elevated?
  97. Tubelab simple SE help needed...working but only on one channel
  98. Yaqin MS-300B SET amp
  99. 300b calibration (tubelab)
  100. Sonics of a "dynamic coupled" driver
  101. 716p's Vs. Fancy Caps
  102. ELL80
  103. Will this work?
  104. What circuit to build with MQ TL-404
  105. Very low output from Knight KN928 amp
  106. 6GK5 to drive a 6AS7?
  107. Plate Heater Dissipators
  108. preamp suitable for Dynaco st-70- OTHER than dynaco
  109. 'EL34 World' website for music amps
  110. Strange Russian(?) tube tester
  111. is this possible?
  112. Power transformer impedance
  113. Anybody did compared tube vs opamp for preamp ?
  114. The days of wine, roses & WE205D
  115. I need to ask...
  116. SPICE model for 6AK5 wanted!
  117. Differences with 6C33 Tube Types
  118. mugen hybride
  119. 1st Build - Kit or No Kit
  120. feedback problems
  121. Antique Electric Supply
  122. Highs
  123. ELK bass amp, mono, twin OPT's (?)
  124. Anyone have a "handle" on the Yaqin EL34 X 2 SE AMP?
  125. Suggestions on books
  126. Cathode stripping in low voltage tubes
  127. Current to overcome 6.5 uuF input capacitance?
  128. Help me to work on the damping factor of my 845 SET
  129. Y A A B - Yet Another Aikido Build
  130. Music Angel - Help wanted
  131. Calculating PS current for octal Aikido
  132. X-10d
  133. wirewound vs standard pots
  134. Anyone famaliar with the 485 tube?
  135. Ideas for ground plane/shielding?
  136. TESLA E88CC 6922 Tubes shorting out???????
  137. Will My Ipod Benefit Through a Tube Amp?
  138. PSU for testing circuits
  139. easier way to cut a square hole for xmfr
  140. Combine left & right for sub
  141. Noisy Squeal from SE amp
  142. Plate Choke calculation
  143. Audio Cable Deathmatch!
  144. tubelab PP?
  145. replacing op-amps with thermionic valves
  146. aikido heater
  147. Heathkit W 5M output transformers
  148. 6S19 Circlotron (OTL)
  149. Quality of Hammond 1600 series transformers and a question about loading.
  150. Kuei Yang Wang's 6sn7 linestage
  151. Laney TF-200 speaker farts out...
  152. E-mu 0202 + audiotester
  153. Where to buy HT toroids ?
  154. CJ 1.4: Power tubes are working but drivers not ! Help please.
  155. A 6SN7 direct coupled preamp & regulated supply for everyone's perusal.
  156. Slight hum from my new soldering station.
  157. phono stage
  158. 6sn7gtb problem
  159. The old man told me to get it all out of the basement
  160. The Look of Preamp Hum
  161. hookup wire options
  162. Tubelab Simple Se Trannie Shopping List-a Newbie Seeks Info
  163. Testing Amplifiers / Pad
  164. Volume Pot vs Stepped Attenuater
  165. Which tubes should I use?
  166. KT88s and grid current
  167. Gain stage with g2-feedback.
  168. K-502 Left Channel is out
  169. 12B4 help needed
  170. Power Trans question
  171. Noob amp wiring question...
  172. 5842 - russian ripoff
  173. Ruskie tube questions
  174. Opt placement
  175. 807 AB2 oscillation maybe?
  176. Amazon Does DIY Parts
  177. Shielded wire
  178. Guitar amp(s) for nephews
  179. Questions about Tube Amplifiers, Mikael's vs SimpleSE
  180. duncan psu simulation vox ac30cc
  181. Where low noise resistors matter
  182. funky power supply
  183. Choke loaded PSU versus VR tube regulated PSU?
  184. What would most of you do?
  185. IRFBC20 as source follower drivers for EL34s in AB1 PP
  186. first post, PS for 6em7 SET amp
  187. affordable transformers for KT-88's
  188. Need help with schematic
  189. How many people here use simulators, like LTspice, to help design tube stuff?
  190. newbie question regarding gain reduction
  191. Anybody did try this tube preamp ?
  192. Heathkit UA-2 output tx wiring question
  193. Question about the properties of "matched" tubes
  194. Using a passive direct box to kill ground loop noise?
  195. magnetized power transformer!
  196. Utc A-24
  197. lower cost options for spectrum analyser/ function generator?
  198. Need schematics for Val VP-110S Tube Amp
  199. So What now
  200. What other tubes can I use this OPT for?
  201. Super Junkbox 6S19P SET
  202. Grid stopper resistors
  203. 1959 Pilot AA-908 Amp into Guitar Amp
  204. Please evaluate my new EL34 Amp (waveform attached)
  205. Max voltages for EL84?
  206. Tubelab SE finished but need help.
  207. Oscilloscope Probes for Tube Work
  208. ECC88 vs 6SN7
  209. Good (tube) audio shows in the US?
  210. Please help me de-hum my new pre
  211. Help for newbie
  212. Simple ReAmp Mod? Help with Input Impedances, Please!
  213. Which of these two phono stages
  214. Crosley radio
  215. Small tube amp for headphones/computer speakers?(first post)
  216. Peculiar Fisher circuit
  217. Hum in Grounded Grid Pre
  218. Counterpoint SA-1000
  219. K-502 How to select a potentiometer
  220. What are these Christmas light things?
  221. a CHEAP integrated tube amp kit-anybody?
  222. My amp is acting like a transducer!?
  223. Transformer current question
  224. Brimar date codes?
  225. Home made SE 300B amp
  226. Parallel Push Pull 6AS7 or 6080
  227. random crackle ? (McMartin MA-20)
  228. KT88 filament failure - twice on same socket
  229. Solid State Regulator for tube amp
  230. Proposed screen-drive amp design... comments, please?
  231. SimpleSE PCB out of stock
  232. Any good explanation of Passive EQ Filters??
  233. terraplane 300B
  234. Sun Audio transformers
  235. Vacuum State RTP5.
  236. Schematics for Audio Innovations s1000 pre
  237. Tube amp for newbye
  238. 3C24SE amp...
  239. Meixing MingDa MC767-RD
  240. confusing transformer connections
  241. Have to mod K-502 to 4Ohms from 8
  242. SOund of 3B28 vs. 866A
  243. S3E Vacuum Tube
  244. Tube audio & "3 dimensionality"
  245. Darling monoblocks
  246. Testing 350B with B & K 747A
  247. Interstage transformer for balanced amp question
  248. Filament transformer questions
  249. dBm or dBV Audio Voltmeter
  250. VTL MB250 Signature monoblock Manual..

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