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  1. One more hybrid idea
  2. Can Anyone figure this?
  3. "Mighty Mite" Single Ended Amplifier
  4. old question - lost answer 6AS7 SE amp
  5. My KT88 SE project
  6. Motorola OPT
  7. Weird Input transformer hum.
  8. cascode vs asymmetrical cathode coupled
  9. music angel 845 SET
  10. Help! My amp stopped singing...
  11. LTP CCS IXYS with 10m45s opinions
  12. Boozhound Choke Tail Pair for HiFi
  13. Bass guitar amp...
  14. 5718 subminiture tube?
  15. fixed bias for push pull tube amps
  16. EC86 and phono
  17. Power Transformer mystery lead....
  18. Bias measurements 6L6
  19. 0A3 Light
  20. Equivalent to Tango NC-10 IT
  21. Ammeter wiring?
  22. Highest Practical Primary Z in OPT?
  23. Ampex 6v6 PP Modifications
  24. Variability of RIAA eq with tube characteristics?
  25. 807/350B/6L6 PP amps PSU ?
  26. Need Help For Tube Amp
  27. ECC83 300B Loftin White amp
  28. Hashimoto and the wonderful 45
  29. Capacitor identification–old PIO?
  30. Heathkit variac
  31. E80L pentode mode as driver?
  32. Transformer repair
  33. How many ga for chassis wire?
  34. 807 Guitar Amplifier
  35. I want to MOD - help?
  36. What About Beam Deflection Tubes?
  37. Capacitor
  38. Placement of Ultralinear Tap On Homemade Transformer
  39. Differential stage with CCS in cathode
  40. Directly heated Cathode/insulation question
  41. "Dirt Cheap SE" 6BM8 spud amp
  42. isolation transformer won't supply filiments - 1968 Harmony H400A tube guitar amp
  43. Single-end Power amp with tubes
  44. Input pot question
  45. Need help putting 6Z4 into PSU Designer
  46. SimpleSE Under Chassis Mounting
  47. Bias methods?
  48. Aikido and SE KT88
  49. Built this pre amp today!
  50. Mystery tube in a Fisher FM-90X - V50,064
  51. Switch contacts for HV supply
  52. The First Sound Recording - we can hear it finally
  53. RCA made in Japan???????
  54. 6V6GT in the SimpleSE
  55. trimmings for amp project
  56. Tube Preamp Hybrid new builder, lots of question!
  57. Chinese mini bias pots
  58. GU-50, GM70 and KT88
  59. Please recommend me an amplifier design.
  60. Single-ended OR push-pull?
  61. Darling in Europe... (110 vs. 220)
  62. DC heater (+/-) -> elevated?
  63. Tubelab simple SE help needed...working but only on one channel
  64. Yaqin MS-300B SET amp
  65. 300b calibration (tubelab)
  66. Sonics of a "dynamic coupled" driver
  67. 716p's Vs. Fancy Caps
  68. ELL80
  69. Will this work?
  70. What circuit to build with MQ TL-404
  71. Very low output from Knight KN928 amp
  72. 6GK5 to drive a 6AS7?
  73. Plate Heater Dissipators
  74. preamp suitable for Dynaco st-70- OTHER than dynaco
  75. 'EL34 World' website for music amps
  76. Strange Russian(?) tube tester
  77. is this possible?
  78. Power transformer impedance
  79. Anybody did compared tube vs opamp for preamp ?
  80. The days of wine, roses & WE205D
  81. I need to ask...
  82. SPICE model for 6AK5 wanted!
  83. Differences with 6C33 Tube Types
  84. mugen hybride
  85. 1st Build - Kit or No Kit
  86. feedback problems
  87. Antique Electric Supply
  88. Highs
  89. ELK bass amp, mono, twin OPT's (?)
  90. Anyone have a "handle" on the Yaqin EL34 X 2 SE AMP?
  91. Suggestions on books
  92. Cathode stripping in low voltage tubes
  93. Current to overcome 6.5 uuF input capacitance?
  94. Help me to work on the damping factor of my 845 SET
  95. Y A A B - Yet Another Aikido Build
  96. Music Angel - Help wanted
  97. Calculating PS current for octal Aikido
  98. X-10d
  99. wirewound vs standard pots
  100. Anyone famaliar with the 485 tube?
  101. Ideas for ground plane/shielding?
  102. TESLA E88CC 6922 Tubes shorting out???????
  103. Will My Ipod Benefit Through a Tube Amp?
  104. PSU for testing circuits
  105. easier way to cut a square hole for xmfr
  106. Combine left & right for sub
  107. Noisy Squeal from SE amp
  108. Plate Choke calculation
  109. Audio Cable Deathmatch!
  110. tubelab PP?
  111. replacing op-amps with thermionic valves
  112. aikido heater
  113. Heathkit W 5M output transformers
  114. 6S19 Circlotron (OTL)
  115. Quality of Hammond 1600 series transformers and a question about loading.
  116. Kuei Yang Wang's 6sn7 linestage
  117. Laney TF-200 speaker farts out...
  118. E-mu 0202 + audiotester
  119. Where to buy HT toroids ?
  120. CJ 1.4: Power tubes are working but drivers not ! Help please.
  121. A 6SN7 direct coupled preamp & regulated supply for everyone's perusal.
  122. Slight hum from my new soldering station.
  123. phono stage
  124. 6sn7gtb problem
  125. The old man told me to get it all out of the basement
  126. The Look of Preamp Hum
  127. hookup wire options
  128. Tubelab Simple Se Trannie Shopping List-a Newbie Seeks Info
  129. Testing Amplifiers / Pad
  130. Volume Pot vs Stepped Attenuater
  131. Which tubes should I use?
  132. KT88s and grid current
  133. Gain stage with g2-feedback.
  134. K-502 Left Channel is out
  135. 12B4 help needed
  136. Power Trans question
  137. Noob amp wiring question...
  138. 5842 - russian ripoff
  139. Ruskie tube questions
  140. Opt placement
  141. 807 AB2 oscillation maybe?
  142. Amazon Does DIY Parts
  143. Shielded wire
  144. Guitar amp(s) for nephews
  145. Questions about Tube Amplifiers, Mikael's vs SimpleSE
  146. duncan psu simulation vox ac30cc
  147. Where low noise resistors matter
  148. funky power supply
  149. Choke loaded PSU versus VR tube regulated PSU?
  150. What would most of you do?
  151. IRFBC20 as source follower drivers for EL34s in AB1 PP
  152. first post, PS for 6em7 SET amp
  153. affordable transformers for KT-88's
  154. Need help with schematic
  155. How many people here use simulators, like LTspice, to help design tube stuff?
  156. newbie question regarding gain reduction
  157. Anybody did try this tube preamp ?
  158. Heathkit UA-2 output tx wiring question
  159. Question about the properties of "matched" tubes
  160. Using a passive direct box to kill ground loop noise?
  161. magnetized power transformer!
  162. Utc A-24
  163. lower cost options for spectrum analyser/ function generator?
  164. Need schematics for Val VP-110S Tube Amp
  165. So What now
  166. What other tubes can I use this OPT for?
  167. Super Junkbox 6S19P SET
  168. Grid stopper resistors
  169. 1959 Pilot AA-908 Amp into Guitar Amp
  170. Please evaluate my new EL34 Amp (waveform attached)
  171. Max voltages for EL84?
  172. Tubelab SE finished but need help.
  173. Oscilloscope Probes for Tube Work
  174. ECC88 vs 6SN7
  175. Good (tube) audio shows in the US?
  176. Please help me de-hum my new pre
  177. Help for newbie
  178. Simple ReAmp Mod? Help with Input Impedances, Please!
  179. Which of these two phono stages
  180. Crosley radio
  181. Small tube amp for headphones/computer speakers?(first post)
  182. Peculiar Fisher circuit
  183. Hum in Grounded Grid Pre
  184. Counterpoint SA-1000
  185. K-502 How to select a potentiometer
  186. What are these Christmas light things?
  187. a CHEAP integrated tube amp kit-anybody?
  188. My amp is acting like a transducer!?
  189. Transformer current question
  190. Brimar date codes?
  191. Home made SE 300B amp
  192. Parallel Push Pull 6AS7 or 6080
  193. random crackle ? (McMartin MA-20)
  194. KT88 filament failure - twice on same socket
  195. Solid State Regulator for tube amp
  196. Proposed screen-drive amp design... comments, please?
  197. SimpleSE PCB out of stock
  198. Any good explanation of Passive EQ Filters??
  199. terraplane 300B
  200. Sun Audio transformers
  201. Vacuum State RTP5.
  202. Schematics for Audio Innovations s1000 pre
  203. Tube amp for newbye
  204. 3C24SE amp...
  205. Meixing MingDa MC767-RD
  206. confusing transformer connections
  207. Have to mod K-502 to 4Ohms from 8
  208. SOund of 3B28 vs. 866A
  209. S3E Vacuum Tube
  210. Tube audio & "3 dimensionality"
  211. Darling monoblocks
  212. Testing 350B with B & K 747A
  213. Interstage transformer for balanced amp question
  214. Filament transformer questions
  215. dBm or dBV Audio Voltmeter
  216. VTL MB250 Signature monoblock Manual..
  217. Choke phase spliter
  218. Output transformer DC resistance..
  219. Chassis layout?
  220. Jolida schematic questions
  221. Tube Phono preamp kit?
  222. Does size really matter - SE Output
  223. 437A testing
  224. Tube Amp reverb noise, no vibrato intensity, unknown model. Help please
  225. What to do with a 5k output transfomer?
  226. adapter?
  227. Studer 52
  228. Safety ground question
  229. Old PS questions (EL34 replacement), and any Aus people know BWD?
  230. Darling 1626 amp
  231. Blackheart 5 watt
  232. What is this tube amp
  233. Extry, Extry, Blind Squirrel Finds Nut -sequence
  234. Why is distortion harmonic?
  235. Source for OPT
  236. EL34 to RL12P35 converting
  237. calculating total current draw
  238. Allied Radio (Knight) KA-55 schematic
  239. 6F6G Amplifier
  240. good book/article about using oscilloscopes?
  241. how to attach photos
  242. Is 450V the max of triode strapped 6l6gc
  243. Separate power supply - Umbilical Cord
  244. tube amp being weird -- any ideas
  245. need to discharge psu safely
  246. Jadis DA7/defy power amplifier mods
  247. 5.3v on 6SN7 filament?
  248. The Valve Wizard
  249. Mercury vapor rectifier tube question
  250. An Indiana Yankee in Putin's court.

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