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  1. 6922 Heater - BIAS
  2. JJ 2A3-40 Watt?
  3. 12AU7 testing result: Are these tubes still good?
  4. "OTK" stamp on russian devices
  5. Where did nj7p.org go ?
  6. New to forum! Or: A few newbie questions
  7. Powersuply Le Bong?
  8. Fixed Bias: the ups and downs
  9. Bias Adjustment Question
  10. Multiple secondaries hook-up!!!
  11. Plate voltage related to sound?
  12. Array speakers & OTL
  13. First Post - Hum on 5687 Pre-amp
  14. DC powered amps
  15. Evaluating Unknown Power Transformers
  16. 0v grid bias with UL connection?
  17. LV Filament supply quandry
  18. which tube using NonDirect heat with best-class sound ?
  19. Surround Decoder - Subtract amplifier
  20. New To Forum - First Post
  21. Try to understand
  22. tube site
  23. OTL with 6S19P?
  24. What should B+ on 300B push-pull be?
  25. Regulated PSU with EL84
  26. How do I design minimum current for 35W PP AMP
  27. Buying bits'n'bobs...
  28. Can't make this address work.....
  29. schematics for 6C33 single ended OTL?
  30. Guitar amp input tube paralleled
  31. valve preamp
  32. trio W-38 problems
  33. Cheap Russian 2.2uF 400V PIO Capacitor
  34. Otl Se
  35. My 2A3 is being left behind
  36. SE for Bass?
  37. Wal-Mart power supplies
  38. Nice deal!
  39. Look for high-voltage regulator projects
  40. Typical plate Voltage for el34
  41. Arc Sp8
  42. New Phono amp - developing stage
  43. fender princeton 5D2.. DONE!
  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. blues junior complaints and 6G15 question
  58. Question about changing a hybrid
  59. High-end Class A valve amplifiers will be illegal in USA?
  60. transformerless supply
  61. "Quasi" ultralinear experiment - questions...
  62. Help on a LUXMAN MQ 3600
  63. Changing from 6X4 to EZ81
  64. Design questions, driver stage for SE.
  65. S5 K-12G Question
  66. Ideas for a tube that heavily distorts ?
  67. CCS current sink in the output of my 2 tube 6080 amp.
  68. What do you think about my design (based on IMPAMP)
  69. spearinol oil (in ASC caps)
  70. Larger chassis Hole Punches
  71. HV Diode Selection
  72. Need help form Germany
  73. Output Impedance
  74. How to connect Gridchoke?
  75. Microphone In Guitar amp Question
  76. Triode connecting a pentode?
  77. help on line pre-amp
  78. Edcor P-P Transformers
  79. chassis work in NYC area
  80. low THD guitar preamp
  81. Please help ID this rectifier:
  82. Power Supply Voltage For 5881/6L6 Amp
  83. Audio Electronic Supply AE-25DJH
  84. Trouble: Main transfo short?
  85. help with chassis layout
  86. "Preamp" with remote (long)
  87. 6BY5 High Voltage & High Current Choke Input Design P.S.
  88. x-10 d and x-can version 2/3 schematics
  89. Ugly, but versatile, new amp
  90. Capacitor advice needed for AVA PAS rebuild
  91. Mic pre transformers
  92. Gain of JE labs 300B?
  93. Troubleshooting.
  94. new to the forum pre-amp
  95. Preamp output delay
  96. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  97. 1st project hum or buzz
  98. Impedans of trafo for EL504 inSE
  99. Can I use 2C39-B to sound
  100. usage of line out trans.
  101. eagle with tubes ?
  102. Rlim in GZ33 datasheet?
  103. LT1085 Current Regulation for DHT filaments
  104. Help Fixing Bias
  105. MC phono amp
  106. 10M45 Mu-Stage Idea?
  107. Hickok 6000A with 6C33 & 13E1...
  108. Isco 494
  109. looking for spice model of 6HA5 or similar tubes
  110. 6SL7 to 6SN7 substitution in power amp?
  111. Adding Subwoofer output to Aikido preamp circuit
  112. A request for PP 6c33c Schematics
  113. Thumping from left speaker when volume is low
  114. Crosstalk in twintriodes?
  115. Example Schematics?
  116. how to choose a rectifier tube? (specifically octals)
  117. Rather odd valve socket - anyone have any ideas?
  118. PS for GG - look for better channel separation
  119. help! T16 OTL schematic
  120. Bench PSU for tubes
  121. Tube Bogen J330 PA amp
  122. FM Stereo Tuner Tube Schematic ?
  123. Conn organ conversion to amp
  124. Smoking Transformer
  125. Questions on 1:1:1 driver transformer
  126. Pentode vrs Mosfet “MU-Stage”
  127. Transformer center tap connections
  128. dumb question :P KT88...
  129. Tube rectifier & regulator (modified)
  130. Some advice on this power supply
  131. Looking for Amperex C11550/1 data.
  132. Inserting tubes into Express PCB
  133. What do you think of this? (211 A2 SE)
  134. Help w/ diyAudio CCS implementation
  135. First DIY Amp Project
  136. HELP with PHONO and MIC preamps.
  137. CLC vs LCLC: is there any advantages other...
  138. Problem with old Heathkit
  139. Does anyone interested tube rectifier & regulator PCB ?
  140. Velleman K4040 conversion from EL34's to KT88's
  141. finished my PCC88 preamp
  142. Max 300B SE output possible with James 6123HS ?
  143. Who's right re bias adjustment versus plate voltage
  144. voltage current regulator
  145. Yarland 34 ciii amp
  146. CCS/5842/300B ground schematic.
  147. tube sockets
  148. PX25
  149. Research on tubes and circuits simple circuits
  150. using only 1/2 of a dual triode
  151. Some HMMM on my SRPP
  152. Grid Stopper
  153. diy tube amp problem
  154. The Red Light District - another PP EL84 amp
  155. Balanced 300B output for headphones or loudspeakers?
  156. 5692, the best?
  157. Power transformer quality differences
  158. Is it possible to use regulated DC for a rectifier tube?
  159. Transformer Secondary Power
  160. Phono preamp
  161. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  162. Physically small rectifier tube with 5V heaters
  163. Distorting 5687 preamp circuit
  164. Looking for a good 300B datasheet
  165. CCS is your friend!
  166. Valve Pre Amp & Class D Power Amp
  167. heater supply questions
  168. sub-mini valve
  169. Amp kit recommendations
  170. First amp for a new in valves
  171. Loud buzz and hum from one monoblock!!!
  172. Stueyh
  173. Big *** '50s Power Supply, now what? 300B SET ideas...
  174. Phono Preamp Design Needed
  175. antique fender bassman 50 retubed HELP
  176. Severe oscillation in 6L6 amp
  177. How to tweak warmth to a power amp?
  178. Can anyone explain me this Loftin White amp?
  179. Substituting dual triodes
  180. ValveWave-1 My first Tube Project
  181. changing output capacitor value? what should I consider?
  182. motor run caps in the output? good or bad idea?
  183. resistors across the heater voltage then the middle is grounded
  184. Switched Pot Source Needed
  185. transcendar transformer
  186. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  187. Voltage Multipliers
  188. I want to build an AM Tube Tuner
  189. Tube Amp CCS?
  190. S-5 Electronics Tube Amp Kit
  191. Tube amps from eBay (China)
  192. filament supply: batteries v TentLabs?
  193. replace a 5651 tube with a zener?
  194. tube design books
  195. Bogen chb100 input conversion suggestions
  196. MesaBoogie 400+ clone
  197. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  198. R-core xformers from China
  199. Counterpoint Service manual wanted
  200. Two chokes in one pot?
  201. help with a transformer
  202. 311T (211 alike) HIGH power triode
  203. Re-attaching anode cap to 805 or 811A tube
  204. "Fisher Doctor"
  205. Aikido + class D in the output stage
  206. tube-shop-com
  207. Ultrasonic heaters
  208. Grounding the Filament Winding
  209. Lundahl LL1680 for balanced output
  210. Website is back & new books posted
  211. strange tube G1 S/5
  212. First Tube Amp Needs an Overhaul
  213. pspice models for tubes
  214. Source for iron cores?
  215. Quad EL84 SE question
  216. Use of 12j1l and gu-50 tubes
  217. Shuguang 300B-98C
  218. Philips AG-9016 Upgrades???
  219. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  220. tube amp in a PCB with a toroidal xformer beside it?
  221. Need advice running 220v in USA
  222. My Fender Princeton FD2 chasis (clone)
  223. Parallel-Push-Pull KT66 organ amp conversion ???
  224. new on tubes
  225. Balance 5687 pre-amp any advise??
  226. The Limitations of an EL34 in UL
  227. Source for tube bases....?
  228. 10Y, 26, 27 and 45: relative microphonics
  229. KT77 Mod Question/Idea/Punshishment
  230. KT88 SE with Edcor xfrmr
  231. Diy Distortion Pedal
  232. 45 fans – expanded horizons upstream?
  233. 12B4a Cathode Follower
  234. Hybrid voltage doubler using tube and diode
  235. Finally finished my first tube amp!
  236. advice on an EL84 Push pull Amp schematic
  237. Vintage radio
  238. Look for 12AU7 Preamp Circuit .
  239. PSU question? Going tube rectified
  240. PSU Rebuild Help Pleas
  241. Screeching tubes
  242. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  243. Fisher 800 restoration
  244. stern's ecl86 amp
  245. Look for Western Electric KS-16547-L1 circuit diagram
  246. Help about grommes 500C
  247. Dynaco MK III with 6146A tubes.
  248. Volume pot for Musical Fidelity F22 pre amp.
  249. Don't you just hate it when
  250. Bogen 8417 tube conversion..?

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