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  1. E80L pentode mode as driver?
  2. Transformer repair
  3. How many ga for chassis wire?
  4. 807 Guitar Amplifier
  5. I want to MOD - help?
  6. What About Beam Deflection Tubes?
  7. Capacitor
  8. Placement of Ultralinear Tap On Homemade Transformer
  9. Differential stage with CCS in cathode
  10. Directly heated Cathode/insulation question
  11. "Dirt Cheap SE" 6BM8 spud amp
  12. isolation transformer won't supply filiments - 1968 Harmony H400A tube guitar amp
  13. Single-end Power amp with tubes
  14. Input pot question
  15. Need help putting 6Z4 into PSU Designer
  16. SimpleSE Under Chassis Mounting
  17. Bias methods?
  18. Aikido and SE KT88
  19. Built this pre amp today!
  20. Mystery tube in a Fisher FM-90X - V50,064
  21. Switch contacts for HV supply
  22. The First Sound Recording - we can hear it finally
  23. RCA made in Japan???????
  24. 6V6GT in the SimpleSE
  25. trimmings for amp project
  26. Tube Preamp Hybrid new builder, lots of question!
  27. Chinese mini bias pots
  28. GU-50, GM70 and KT88
  29. Please recommend me an amplifier design.
  30. Single-ended OR push-pull?
  31. Darling in Europe... (110 vs. 220)
  32. DC heater (+/-) -> elevated?
  33. Tubelab simple SE help needed...working but only on one channel
  34. Yaqin MS-300B SET amp
  35. 300b calibration (tubelab)
  36. Sonics of a "dynamic coupled" driver
  37. 716p's Vs. Fancy Caps
  38. ELL80
  39. Will this work?
  40. What circuit to build with MQ TL-404
  41. Very low output from Knight KN928 amp
  42. 6GK5 to drive a 6AS7?
  43. Plate Heater Dissipators
  44. preamp suitable for Dynaco st-70- OTHER than dynaco
  45. 'EL34 World' website for music amps
  46. Strange Russian(?) tube tester
  47. is this possible?
  48. Power transformer impedance
  49. Anybody did compared tube vs opamp for preamp ?
  50. The days of wine, roses & WE205D
  51. I need to ask...
  52. SPICE model for 6AK5 wanted!
  53. Differences with 6C33 Tube Types
  54. mugen hybride
  55. 1st Build - Kit or No Kit
  56. feedback problems
  57. Antique Electric Supply
  58. Highs
  59. ELK bass amp, mono, twin OPT's (?)
  60. Anyone have a "handle" on the Yaqin EL34 X 2 SE AMP?
  61. Suggestions on books
  62. Cathode stripping in low voltage tubes
  63. Current to overcome 6.5 uuF input capacitance?
  64. Help me to work on the damping factor of my 845 SET
  65. Y A A B - Yet Another Aikido Build
  66. Music Angel - Help wanted
  67. Calculating PS current for octal Aikido
  68. X-10d
  69. wirewound vs standard pots
  70. Anyone famaliar with the 485 tube?
  71. Ideas for ground plane/shielding?
  72. TESLA E88CC 6922 Tubes shorting out???????
  73. Will My Ipod Benefit Through a Tube Amp?
  74. PSU for testing circuits
  75. easier way to cut a square hole for xmfr
  76. Combine left & right for sub
  77. Noisy Squeal from SE amp
  78. Plate Choke calculation
  79. Audio Cable Deathmatch!
  80. tubelab PP?
  81. replacing op-amps with thermionic valves
  82. aikido heater
  83. Heathkit W 5M output transformers
  84. 6S19 Circlotron (OTL)
  85. Quality of Hammond 1600 series transformers and a question about loading.
  86. Kuei Yang Wang's 6sn7 linestage
  87. Laney TF-200 speaker farts out...
  88. E-mu 0202 + audiotester
  89. Where to buy HT toroids ?
  90. CJ 1.4: Power tubes are working but drivers not ! Help please.
  91. A 6SN7 direct coupled preamp & regulated supply for everyone's perusal.
  92. Slight hum from my new soldering station.
  93. phono stage
  94. 6sn7gtb problem
  95. The old man told me to get it all out of the basement
  96. The Look of Preamp Hum
  97. hookup wire options
  98. Tubelab Simple Se Trannie Shopping List-a Newbie Seeks Info
  99. Testing Amplifiers / Pad
  100. Volume Pot vs Stepped Attenuater
  101. Which tubes should I use?
  102. KT88s and grid current
  103. Gain stage with g2-feedback.
  104. K-502 Left Channel is out
  105. 12B4 help needed
  106. Power Trans question
  107. Noob amp wiring question...
  108. 5842 - russian ripoff
  109. Ruskie tube questions
  110. Opt placement
  111. 807 AB2 oscillation maybe?
  112. Amazon Does DIY Parts
  113. Shielded wire
  114. Guitar amp(s) for nephews
  115. Questions about Tube Amplifiers, Mikael's vs SimpleSE
  116. duncan psu simulation vox ac30cc
  117. Where low noise resistors matter
  118. funky power supply
  119. Choke loaded PSU versus VR tube regulated PSU?
  120. What would most of you do?
  121. IRFBC20 as source follower drivers for EL34s in AB1 PP
  122. first post, PS for 6em7 SET amp
  123. affordable transformers for KT-88's
  124. Need help with schematic
  125. How many people here use simulators, like LTspice, to help design tube stuff?
  126. newbie question regarding gain reduction
  127. Anybody did try this tube preamp ?
  128. Heathkit UA-2 output tx wiring question
  129. Question about the properties of "matched" tubes
  130. Using a passive direct box to kill ground loop noise?
  131. magnetized power transformer!
  132. Utc A-24
  133. lower cost options for spectrum analyser/ function generator?
  134. Need schematics for Val VP-110S Tube Amp
  135. So What now
  136. What other tubes can I use this OPT for?
  137. Super Junkbox 6S19P SET
  138. Grid stopper resistors
  139. 1959 Pilot AA-908 Amp into Guitar Amp
  140. Please evaluate my new EL34 Amp (waveform attached)
  141. Max voltages for EL84?
  142. Tubelab SE finished but need help.
  143. Oscilloscope Probes for Tube Work
  144. ECC88 vs 6SN7
  145. Good (tube) audio shows in the US?
  146. Please help me de-hum my new pre
  147. Help for newbie
  148. Simple ReAmp Mod? Help with Input Impedances, Please!
  149. Which of these two phono stages
  150. Crosley radio
  151. Small tube amp for headphones/computer speakers?(first post)
  152. Peculiar Fisher circuit
  153. Hum in Grounded Grid Pre
  154. Counterpoint SA-1000
  155. K-502 How to select a potentiometer
  156. What are these Christmas light things?
  157. a CHEAP integrated tube amp kit-anybody?
  158. My amp is acting like a transducer!?
  159. Transformer current question
  160. Brimar date codes?
  161. Home made SE 300B amp
  162. Parallel Push Pull 6AS7 or 6080
  163. random crackle ? (McMartin MA-20)
  164. KT88 filament failure - twice on same socket
  165. Solid State Regulator for tube amp
  166. Proposed screen-drive amp design... comments, please?
  167. SimpleSE PCB out of stock
  168. Any good explanation of Passive EQ Filters??
  169. terraplane 300B
  170. Sun Audio transformers
  171. Vacuum State RTP5.
  172. Schematics for Audio Innovations s1000 pre
  173. Tube amp for newbye
  174. 3C24SE amp...
  175. Meixing MingDa MC767-RD
  176. confusing transformer connections
  177. Have to mod K-502 to 4Ohms from 8
  178. SOund of 3B28 vs. 866A
  179. S3E Vacuum Tube
  180. Tube audio & "3 dimensionality"
  181. Darling monoblocks
  182. Testing 350B with B & K 747A
  183. Interstage transformer for balanced amp question
  184. Filament transformer questions
  185. dBm or dBV Audio Voltmeter
  186. VTL MB250 Signature monoblock Manual..
  187. Choke phase spliter
  188. Output transformer DC resistance..
  189. Chassis layout?
  190. Jolida schematic questions
  191. Tube Phono preamp kit?
  192. Does size really matter - SE Output
  193. 437A testing
  194. Tube Amp reverb noise, no vibrato intensity, unknown model. Help please
  195. What to do with a 5k output transfomer?
  196. adapter?
  197. Studer 52
  198. Safety ground question
  199. Old PS questions (EL34 replacement), and any Aus people know BWD?
  200. Darling 1626 amp
  201. Blackheart 5 watt
  202. What is this tube amp
  203. Extry, Extry, Blind Squirrel Finds Nut -sequence
  204. Why is distortion harmonic?
  205. Source for OPT
  206. EL34 to RL12P35 converting
  207. calculating total current draw
  208. Allied Radio (Knight) KA-55 schematic
  209. 6F6G Amplifier
  210. good book/article about using oscilloscopes?
  211. how to attach photos
  212. Is 450V the max of triode strapped 6l6gc
  213. Separate power supply - Umbilical Cord
  214. tube amp being weird -- any ideas
  215. need to discharge psu safely
  216. Jadis DA7/defy power amplifier mods
  217. 5.3v on 6SN7 filament?
  218. The Valve Wizard
  219. Mercury vapor rectifier tube question
  220. An Indiana Yankee in Putin's court.
  221. Switching over to a fixed bias
  222. Dynamic load line analysis using music and speaker load
  223. Capacitance in PSU
  224. preamp line ctt
  225. Genalex KT-88 reissue
  226. Combine EF80 with EL84
  227. 2A3 maximum plate voltage
  228. Amplifier Response Stability & All That.
  229. 100k linear pots, any idea?
  230. 6550, 6L6, or 6V6??
  231. grid-stopper resistor
  232. cathode bypass caps suggestions please for newbie
  233. Need Schematic-H&K B.A.T.T.
  234. 6EJ7 phono preamp?
  235. Impressions of the Ella, a pp EL34
  236. 30L15 / PCC805 - What can I use them for?
  237. Ultra Cheap transformers?
  238. Push-pull output impedance
  239. Tube amp cost
  240. 830b
  241. Leak Tl/12+
  242. Toroid Trafo as choke
  243. in search of a 3c33 dual triode.....
  244. Question about MiniBlok II Schematic
  245. Wavebourn Alligator amplifier
  246. Best Tube Testers?
  247. Rusky version EF86
  248. Melos SHA Gold Issue
  249. Tubelab Simple SE & Edcor
  250. Erratic tube activity

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