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  1. Nice deal!
  2. Look for high-voltage regulator projects
  3. Typical plate Voltage for el34
  4. Arc Sp8
  5. New Phono amp - developing stage
  6. fender princeton 5D2.. DONE!
  7. CCS Bang for the buck output or driver?
  8. pentode driver sanity check - before i build
  9. 6av6 mini pre didn t work
  10. CCS in the output stage
  11. Looking for Schematic using KC3 Preamp ?
  12. If you are looking to try balanced AC power....
  13. The best Coupling cap (under $20)
  14. What makes a speaker "tube-friendly"?
  15. Using 6L6 for 300b driver
  16. Heater reference
  17. 6G15 output transformer selection
  18. Morgan Jones and cascodes
  19. 6A3/6B4G/6S4S(2A3/2S4S) project
  20. blues junior complaints and 6G15 question
  21. Question about changing a hybrid
  22. High-end Class A valve amplifiers will be illegal in USA?
  23. transformerless supply
  24. "Quasi" ultralinear experiment - questions...
  25. Help on a LUXMAN MQ 3600
  26. Changing from 6X4 to EZ81
  27. Design questions, driver stage for SE.
  28. S5 K-12G Question
  29. Ideas for a tube that heavily distorts ?
  30. CCS current sink in the output of my 2 tube 6080 amp.
  31. What do you think about my design (based on IMPAMP)
  32. spearinol oil (in ASC caps)
  33. Larger chassis Hole Punches
  34. HV Diode Selection
  35. Need help form Germany
  36. Output Impedance
  37. How to connect Gridchoke?
  38. Microphone In Guitar amp Question
  39. Triode connecting a pentode?
  40. help on line pre-amp
  41. Edcor P-P Transformers
  42. chassis work in NYC area
  43. low THD guitar preamp
  44. Please help ID this rectifier:
  45. Power Supply Voltage For 5881/6L6 Amp
  46. Audio Electronic Supply AE-25DJH
  47. Trouble: Main transfo short?
  48. help with chassis layout
  49. "Preamp" with remote (long)
  50. 6BY5 High Voltage & High Current Choke Input Design P.S.
  51. x-10 d and x-can version 2/3 schematics
  52. Ugly, but versatile, new amp
  53. Capacitor advice needed for AVA PAS rebuild
  54. Mic pre transformers
  55. Gain of JE labs 300B?
  56. Troubleshooting.
  57. new to the forum pre-amp
  58. Preamp output delay
  59. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  60. 1st project hum or buzz
  61. Impedans of trafo for EL504 inSE
  62. Can I use 2C39-B to sound
  63. usage of line out trans.
  64. eagle with tubes ?
  65. Rlim in GZ33 datasheet?
  66. LT1085 Current Regulation for DHT filaments
  67. Help Fixing Bias
  68. MC phono amp
  69. 10M45 Mu-Stage Idea?
  70. Hickok 6000A with 6C33 & 13E1...
  71. Isco 494
  72. looking for spice model of 6HA5 or similar tubes
  73. 6SL7 to 6SN7 substitution in power amp?
  74. Adding Subwoofer output to Aikido preamp circuit
  75. A request for PP 6c33c Schematics
  76. Thumping from left speaker when volume is low
  77. Crosstalk in twintriodes?
  78. Example Schematics?
  79. how to choose a rectifier tube? (specifically octals)
  80. Rather odd valve socket - anyone have any ideas?
  81. PS for GG - look for better channel separation
  82. help! T16 OTL schematic
  83. Bench PSU for tubes
  84. Tube Bogen J330 PA amp
  85. FM Stereo Tuner Tube Schematic ?
  86. Conn organ conversion to amp
  87. Smoking Transformer
  88. Questions on 1:1:1 driver transformer
  89. Pentode vrs Mosfet “MU-Stage”
  90. Transformer center tap connections
  91. dumb question :P KT88...
  92. Tube rectifier & regulator (modified)
  93. Some advice on this power supply
  94. Looking for Amperex C11550/1 data.
  95. Inserting tubes into Express PCB
  96. What do you think of this? (211 A2 SE)
  97. Help w/ diyAudio CCS implementation
  98. First DIY Amp Project
  99. HELP with PHONO and MIC preamps.
  100. CLC vs LCLC: is there any advantages other...
  101. Problem with old Heathkit
  102. Does anyone interested tube rectifier & regulator PCB ?
  103. Velleman K4040 conversion from EL34's to KT88's
  104. finished my PCC88 preamp
  105. Max 300B SE output possible with James 6123HS ?
  106. Who's right re bias adjustment versus plate voltage
  107. voltage current regulator
  108. Yarland 34 ciii amp
  109. CCS/5842/300B ground schematic.
  110. tube sockets
  111. PX25
  112. Research on tubes and circuits simple circuits
  113. using only 1/2 of a dual triode
  114. Some HMMM on my SRPP
  115. Grid Stopper
  116. diy tube amp problem
  117. The Red Light District - another PP EL84 amp
  118. Balanced 300B output for headphones or loudspeakers?
  119. 5692, the best?
  120. Power transformer quality differences
  121. Is it possible to use regulated DC for a rectifier tube?
  122. Transformer Secondary Power
  123. Phono preamp
  124. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  125. Physically small rectifier tube with 5V heaters
  126. Distorting 5687 preamp circuit
  127. Looking for a good 300B datasheet
  128. CCS is your friend!
  129. Valve Pre Amp & Class D Power Amp
  130. heater supply questions
  131. sub-mini valve
  132. Amp kit recommendations
  133. First amp for a new in valves
  134. Loud buzz and hum from one monoblock!!!
  135. Stueyh
  136. Big *** '50s Power Supply, now what? 300B SET ideas...
  137. Phono Preamp Design Needed
  138. antique fender bassman 50 retubed HELP
  139. Severe oscillation in 6L6 amp
  140. How to tweak warmth to a power amp?
  141. Can anyone explain me this Loftin White amp?
  142. Substituting dual triodes
  143. ValveWave-1 My first Tube Project
  144. changing output capacitor value? what should I consider?
  145. motor run caps in the output? good or bad idea?
  146. resistors across the heater voltage then the middle is grounded
  147. Switched Pot Source Needed
  148. transcendar transformer
  149. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  150. Voltage Multipliers
  151. I want to build an AM Tube Tuner
  152. Tube Amp CCS?
  153. S-5 Electronics Tube Amp Kit
  154. Tube amps from eBay (China)
  155. filament supply: batteries v TentLabs?
  156. replace a 5651 tube with a zener?
  157. tube design books
  158. Bogen chb100 input conversion suggestions
  159. MesaBoogie 400+ clone
  160. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  161. R-core xformers from China
  162. Counterpoint Service manual wanted
  163. Two chokes in one pot?
  164. help with a transformer
  165. 311T (211 alike) HIGH power triode
  166. Re-attaching anode cap to 805 or 811A tube
  167. "Fisher Doctor"
  168. Aikido + class D in the output stage
  169. tube-shop-com
  170. Ultrasonic heaters
  171. Grounding the Filament Winding
  172. Lundahl LL1680 for balanced output
  173. Website is back & new books posted
  174. strange tube G1 S/5
  175. First Tube Amp Needs an Overhaul
  176. pspice models for tubes
  177. Source for iron cores?
  178. Quad EL84 SE question
  179. Use of 12j1l and gu-50 tubes
  180. Shuguang 300B-98C
  181. Philips AG-9016 Upgrades???
  182. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  183. tube amp in a PCB with a toroidal xformer beside it?
  184. Need advice running 220v in USA
  185. My Fender Princeton FD2 chasis (clone)
  186. Parallel-Push-Pull KT66 organ amp conversion ???
  187. new on tubes
  188. Balance 5687 pre-amp any advise??
  189. The Limitations of an EL34 in UL
  190. Source for tube bases....?
  191. 10Y, 26, 27 and 45: relative microphonics
  192. KT77 Mod Question/Idea/Punshishment
  193. KT88 SE with Edcor xfrmr
  194. Diy Distortion Pedal
  195. 45 fans – expanded horizons upstream?
  196. 12B4a Cathode Follower
  197. Hybrid voltage doubler using tube and diode
  198. Finally finished my first tube amp!
  199. advice on an EL84 Push pull Amp schematic
  200. Vintage radio
  201. Look for 12AU7 Preamp Circuit .
  202. PSU question? Going tube rectified
  203. PSU Rebuild Help Pleas
  204. Screeching tubes
  205. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  206. Fisher 800 restoration
  207. stern's ecl86 amp
  208. Look for Western Electric KS-16547-L1 circuit diagram
  209. Help about grommes 500C
  210. Dynaco MK III with 6146A tubes.
  211. Volume pot for Musical Fidelity F22 pre amp.
  212. Don't you just hate it when
  213. Bogen 8417 tube conversion..?
  214. How to Build Unbilical from PS to Phono
  215. Class A SET preamp, help
  216. Grounding MFA Luminescence
  217. custom transformer manufacturers (potted if possible)
  218. To Recap - A Question
  219. KT 44 anyone tried these
  220. Volts AC rating in power supply caps
  221. unfamiliar tube brand
  222. power supply schematic with a 6080 used as a "pass tube"
  223. Electro-Vox LA-210 Preamp; tube
  224. why so CHEAP!?
  225. Antique Electronic Supply
  226. Best Use For My Sansui Iron?
  227. Help on AMC CVT 3030
  228. Heathkit W-5M Red Plate Issue
  229. 1st Post (here) : ) My first project: Boozhound Amp
  230. regulated DC heater supply
  231. Help me pick up some good tubes! Urgent!
  232. CLCRC power supply config
  233. Choke Replacement Question.
  234. What tube instead of 7189
  235. Help on PP EL 34 from Claus Byrith
  236. Datasheet of PTT4 tube?
  237. ready to give up
  238. O-Ring sizes for Tube Dampers
  239. preamp /amp combination question
  240. Strange Transformer Question.....
  241. Audio Note M3/4/5/6/8 schematics
  242. Lundahl LL1540 for SY's heretical?
  243. Henrys
  244. 955 Acorn tubes
  245. Do you know these Ampex mono Amps
  246. Audio Research Resistor Type
  247. What's the best low wattage guitar amp?
  248. volume issues
  249. Need advice for best CCS
  250. confusion in the resistor/capacitor values and B+ supply for the aikido

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