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  1. Toroidal core saturation
  2. Mystery SE OPT
  3. Is this a Spud Amp ?
  4. input cap V rating
  5. 6922 Heater - BIAS
  6. JJ 2A3-40 Watt?
  7. 12AU7 testing result: Are these tubes still good?
  8. "OTK" stamp on russian devices
  9. Where did nj7p.org go ?
  10. New to forum! Or: A few newbie questions
  11. Powersuply Le Bong?
  12. Fixed Bias: the ups and downs
  13. Bias Adjustment Question
  14. Multiple secondaries hook-up!!!
  15. Plate voltage related to sound?
  16. Array speakers & OTL
  17. First Post - Hum on 5687 Pre-amp
  18. DC powered amps
  19. Evaluating Unknown Power Transformers
  20. 0v grid bias with UL connection?
  21. LV Filament supply quandry
  22. which tube using NonDirect heat with best-class sound ?
  23. Surround Decoder - Subtract amplifier
  24. New To Forum - First Post
  25. Try to understand
  26. tube site
  27. OTL with 6S19P?
  28. What should B+ on 300B push-pull be?
  29. Regulated PSU with EL84
  30. How do I design minimum current for 35W PP AMP
  31. Buying bits'n'bobs...
  32. Can't make this address work.....
  33. schematics for 6C33 single ended OTL?
  34. valve preamp
  35. trio W-38 problems
  36. Otl Se
  37. My 2A3 is being left behind
  38. Wal-Mart power supplies
  39. Nice deal!
  40. Look for high-voltage regulator projects
  41. Typical plate Voltage for el34
  42. Arc Sp8
  43. New Phono amp - developing stage
  44. CCS Bang for the buck output or driver?
  45. pentode driver sanity check - before i build
  46. 6av6 mini pre didn t work
  47. CCS in the output stage
  48. Looking for Schematic using KC3 Preamp ?
  49. If you are looking to try balanced AC power....
  50. The best Coupling cap (under $20)
  51. What makes a speaker "tube-friendly"?
  52. Using 6L6 for 300b driver
  53. Heater reference
  54. 6G15 output transformer selection
  55. Morgan Jones and cascodes
  56. 6A3/6B4G/6S4S(2A3/2S4S) project
  57. Question about changing a hybrid
  58. High-end Class A valve amplifiers will be illegal in USA?
  59. transformerless supply
  60. "Quasi" ultralinear experiment - questions...
  61. Help on a LUXMAN MQ 3600
  62. Changing from 6X4 to EZ81
  63. Design questions, driver stage for SE.
  64. S5 K-12G Question
  65. Ideas for a tube that heavily distorts ?
  66. CCS current sink in the output of my 2 tube 6080 amp.
  67. What do you think about my design (based on IMPAMP)
  68. Larger chassis Hole Punches
  69. Need help form Germany
  70. Output Impedance
  71. How to connect Gridchoke?
  72. Triode connecting a pentode?
  73. help on line pre-amp
  74. Edcor P-P Transformers
  75. chassis work in NYC area
  76. Please help ID this rectifier:
  77. Power Supply Voltage For 5881/6L6 Amp
  78. Audio Electronic Supply AE-25DJH
  79. Trouble: Main transfo short?
  80. help with chassis layout
  81. "Preamp" with remote (long)
  82. 6BY5 High Voltage & High Current Choke Input Design P.S.
  83. x-10 d and x-can version 2/3 schematics
  84. Ugly, but versatile, new amp
  85. Capacitor advice needed for AVA PAS rebuild
  86. Mic pre transformers
  87. Gain of JE labs 300B?
  88. Troubleshooting.
  89. new to the forum pre-amp
  90. Preamp output delay
  91. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  92. 1st project hum or buzz
  93. Impedans of trafo for EL504 inSE
  94. Can I use 2C39-B to sound
  95. usage of line out trans.
  96. eagle with tubes ?
  97. Rlim in GZ33 datasheet?
  98. LT1085 Current Regulation for DHT filaments
  99. Help Fixing Bias
  100. MC phono amp
  101. 10M45 Mu-Stage Idea?
  102. Hickok 6000A with 6C33 & 13E1...
  103. Isco 494
  104. looking for spice model of 6HA5 or similar tubes
  105. 6SL7 to 6SN7 substitution in power amp?
  106. Adding Subwoofer output to Aikido preamp circuit
  107. A request for PP 6c33c Schematics
  108. Thumping from left speaker when volume is low
  109. Crosstalk in twintriodes?
  110. Example Schematics?
  111. how to choose a rectifier tube? (specifically octals)
  112. Rather odd valve socket - anyone have any ideas?
  113. PS for GG - look for better channel separation
  114. help! T16 OTL schematic
  115. Bench PSU for tubes
  116. FM Stereo Tuner Tube Schematic ?
  117. Smoking Transformer
  118. Questions on 1:1:1 driver transformer
  119. Pentode vrs Mosfet “MU-Stage”
  120. Transformer center tap connections
  121. dumb question :P KT88...
  122. Tube rectifier & regulator (modified)
  123. Some advice on this power supply
  124. Looking for Amperex C11550/1 data.
  125. Inserting tubes into Express PCB
  126. What do you think of this? (211 A2 SE)
  127. Help w/ diyAudio CCS implementation
  128. First DIY Amp Project
  129. HELP with PHONO and MIC preamps.
  130. CLC vs LCLC: is there any advantages other...
  131. Problem with old Heathkit
  132. Does anyone interested tube rectifier & regulator PCB ?
  133. Velleman K4040 conversion from EL34's to KT88's
  134. finished my PCC88 preamp
  135. Max 300B SE output possible with James 6123HS ?
  136. Who's right re bias adjustment versus plate voltage
  137. voltage current regulator
  138. Yarland 34 ciii amp
  139. CCS/5842/300B ground schematic.
  140. tube sockets
  141. PX25
  142. Research on tubes and circuits simple circuits
  143. using only 1/2 of a dual triode
  144. Some HMMM on my SRPP
  145. Grid Stopper
  146. diy tube amp problem
  147. The Red Light District - another PP EL84 amp
  148. Balanced 300B output for headphones or loudspeakers?
  149. 5692, the best?
  150. Power transformer quality differences
  151. Is it possible to use regulated DC for a rectifier tube?
  152. Transformer Secondary Power
  153. Phono preamp
  154. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  155. Physically small rectifier tube with 5V heaters
  156. Distorting 5687 preamp circuit
  157. Looking for a good 300B datasheet
  158. CCS is your friend!
  159. Valve Pre Amp & Class D Power Amp
  160. heater supply questions
  161. sub-mini valve
  162. Amp kit recommendations
  163. First amp for a new in valves
  164. Loud buzz and hum from one monoblock!!!
  165. Stueyh
  166. Big *** '50s Power Supply, now what? 300B SET ideas...
  167. Phono Preamp Design Needed
  168. Severe oscillation in 6L6 amp
  169. How to tweak warmth to a power amp?
  170. Can anyone explain me this Loftin White amp?
  171. Substituting dual triodes
  172. ValveWave-1 My first Tube Project
  173. changing output capacitor value? what should I consider?
  174. motor run caps in the output? good or bad idea?
  175. resistors across the heater voltage then the middle is grounded
  176. Switched Pot Source Needed
  177. transcendar transformer
  178. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  179. Voltage Multipliers
  180. I want to build an AM Tube Tuner
  181. Tube Amp CCS?
  182. S-5 Electronics Tube Amp Kit
  183. Tube amps from eBay (China)
  184. filament supply: batteries v TentLabs?
  185. replace a 5651 tube with a zener?
  186. tube design books
  187. Bogen chb100 input conversion suggestions
  188. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  189. R-core xformers from China
  190. Counterpoint Service manual wanted
  191. Two chokes in one pot?
  192. help with a transformer
  193. 311T (211 alike) HIGH power triode
  194. Re-attaching anode cap to 805 or 811A tube
  195. "Fisher Doctor"
  196. Aikido + class D in the output stage
  197. tube-shop-com
  198. Ultrasonic heaters
  199. Grounding the Filament Winding
  200. Lundahl LL1680 for balanced output
  201. Website is back & new books posted
  202. strange tube G1 S/5
  203. First Tube Amp Needs an Overhaul
  204. pspice models for tubes
  205. Source for iron cores?
  206. Quad EL84 SE question
  207. Use of 12j1l and gu-50 tubes
  208. Shuguang 300B-98C
  209. Philips AG-9016 Upgrades???
  210. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  211. tube amp in a PCB with a toroidal xformer beside it?
  212. Need advice running 220v in USA
  213. Parallel-Push-Pull KT66 organ amp conversion ???
  214. new on tubes
  215. Balance 5687 pre-amp any advise??
  216. The Limitations of an EL34 in UL
  217. Source for tube bases....?
  218. 10Y, 26, 27 and 45: relative microphonics
  219. KT77 Mod Question/Idea/Punshishment
  220. KT88 SE with Edcor xfrmr
  221. Diy Distortion Pedal
  222. 45 fans – expanded horizons upstream?
  223. 12B4a Cathode Follower
  224. Hybrid voltage doubler using tube and diode
  225. Finally finished my first tube amp!
  226. advice on an EL84 Push pull Amp schematic
  227. Vintage radio
  228. Look for 12AU7 Preamp Circuit .
  229. PSU question? Going tube rectified
  230. PSU Rebuild Help Pleas
  231. Screeching tubes
  232. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  233. Fisher 800 restoration
  234. stern's ecl86 amp
  235. Look for Western Electric KS-16547-L1 circuit diagram
  236. Help about grommes 500C
  237. Dynaco MK III with 6146A tubes.
  238. Volume pot for Musical Fidelity F22 pre amp.
  239. Don't you just hate it when
  240. Bogen 8417 tube conversion..?
  241. How to Build Unbilical from PS to Phono
  242. Class A SET preamp, help
  243. Grounding MFA Luminescence
  244. custom transformer manufacturers (potted if possible)
  245. To Recap - A Question
  246. KT 44 anyone tried these
  247. unfamiliar tube brand
  248. power supply schematic with a 6080 used as a "pass tube"
  249. why so CHEAP!?
  250. Antique Electronic Supply

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