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  1. transformerless supply
  2. "Quasi" ultralinear experiment - questions...
  3. Help on a LUXMAN MQ 3600
  4. Changing from 6X4 to EZ81
  5. Design questions, driver stage for SE.
  6. S5 K-12G Question
  7. Ideas for a tube that heavily distorts ?
  8. CCS current sink in the output of my 2 tube 6080 amp.
  9. What do you think about my design (based on IMPAMP)
  10. spearinol oil (in ASC caps)
  11. Larger chassis Hole Punches
  12. HV Diode Selection
  13. Need help form Germany
  14. Output Impedance
  15. How to connect Gridchoke?
  16. Microphone In Guitar amp Question
  17. Triode connecting a pentode?
  18. help on line pre-amp
  19. Edcor P-P Transformers
  20. chassis work in NYC area
  21. low THD guitar preamp
  22. Please help ID this rectifier:
  23. Power Supply Voltage For 5881/6L6 Amp
  24. Audio Electronic Supply AE-25DJH
  25. Trouble: Main transfo short?
  26. help with chassis layout
  27. "Preamp" with remote (long)
  28. 6BY5 High Voltage & High Current Choke Input Design P.S.
  29. x-10 d and x-can version 2/3 schematics
  30. Ugly, but versatile, new amp
  31. Capacitor advice needed for AVA PAS rebuild
  32. Mic pre transformers
  33. Gain of JE labs 300B?
  34. Troubleshooting.
  35. new to the forum pre-amp
  36. Preamp output delay
  37. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  38. 1st project hum or buzz
  39. Impedans of trafo for EL504 inSE
  40. Can I use 2C39-B to sound
  41. usage of line out trans.
  42. eagle with tubes ?
  43. Rlim in GZ33 datasheet?
  44. LT1085 Current Regulation for DHT filaments
  45. Help Fixing Bias
  46. MC phono amp
  47. 10M45 Mu-Stage Idea?
  48. Hickok 6000A with 6C33 & 13E1...
  49. Isco 494
  50. looking for spice model of 6HA5 or similar tubes
  51. 6SL7 to 6SN7 substitution in power amp?
  52. Adding Subwoofer output to Aikido preamp circuit
  53. A request for PP 6c33c Schematics
  54. Thumping from left speaker when volume is low
  55. Crosstalk in twintriodes?
  56. Example Schematics?
  57. how to choose a rectifier tube? (specifically octals)
  58. Rather odd valve socket - anyone have any ideas?
  59. PS for GG - look for better channel separation
  60. help! T16 OTL schematic
  61. Bench PSU for tubes
  62. Tube Bogen J330 PA amp
  63. FM Stereo Tuner Tube Schematic ?
  64. Conn organ conversion to amp
  65. Smoking Transformer
  66. Questions on 1:1:1 driver transformer
  67. Pentode vrs Mosfet “MU-Stage”
  68. Transformer center tap connections
  69. dumb question :P KT88...
  70. Tube rectifier & regulator (modified)
  71. Some advice on this power supply
  72. Looking for Amperex C11550/1 data.
  73. Inserting tubes into Express PCB
  74. What do you think of this? (211 A2 SE)
  75. Help w/ diyAudio CCS implementation
  76. First DIY Amp Project
  77. HELP with PHONO and MIC preamps.
  78. CLC vs LCLC: is there any advantages other...
  79. Problem with old Heathkit
  80. Does anyone interested tube rectifier & regulator PCB ?
  81. Velleman K4040 conversion from EL34's to KT88's
  82. finished my PCC88 preamp
  83. Max 300B SE output possible with James 6123HS ?
  84. Who's right re bias adjustment versus plate voltage
  85. voltage current regulator
  86. Yarland 34 ciii amp
  87. CCS/5842/300B ground schematic.
  88. tube sockets
  89. PX25
  90. Research on tubes and circuits simple circuits
  91. using only 1/2 of a dual triode
  92. Some HMMM on my SRPP
  93. Grid Stopper
  94. diy tube amp problem
  95. The Red Light District - another PP EL84 amp
  96. Balanced 300B output for headphones or loudspeakers?
  97. 5692, the best?
  98. Power transformer quality differences
  99. Is it possible to use regulated DC for a rectifier tube?
  100. Transformer Secondary Power
  101. Phono preamp
  102. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  103. Physically small rectifier tube with 5V heaters
  104. Distorting 5687 preamp circuit
  105. Looking for a good 300B datasheet
  106. CCS is your friend!
  107. Valve Pre Amp & Class D Power Amp
  108. heater supply questions
  109. sub-mini valve
  110. Amp kit recommendations
  111. First amp for a new in valves
  112. Loud buzz and hum from one monoblock!!!
  113. Stueyh
  114. Big *** '50s Power Supply, now what? 300B SET ideas...
  115. Phono Preamp Design Needed
  116. antique fender bassman 50 retubed HELP
  117. Severe oscillation in 6L6 amp
  118. How to tweak warmth to a power amp?
  119. Can anyone explain me this Loftin White amp?
  120. Substituting dual triodes
  121. ValveWave-1 My first Tube Project
  122. changing output capacitor value? what should I consider?
  123. motor run caps in the output? good or bad idea?
  124. resistors across the heater voltage then the middle is grounded
  125. Switched Pot Source Needed
  126. transcendar transformer
  127. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  128. Voltage Multipliers
  129. I want to build an AM Tube Tuner
  130. Tube Amp CCS?
  131. S-5 Electronics Tube Amp Kit
  132. Tube amps from eBay (China)
  133. filament supply: batteries v TentLabs?
  134. replace a 5651 tube with a zener?
  135. tube design books
  136. Bogen chb100 input conversion suggestions
  137. MesaBoogie 400+ clone
  138. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  139. R-core xformers from China
  140. Counterpoint Service manual wanted
  141. Two chokes in one pot?
  142. help with a transformer
  143. 311T (211 alike) HIGH power triode
  144. Re-attaching anode cap to 805 or 811A tube
  145. "Fisher Doctor"
  146. Aikido + class D in the output stage
  147. tube-shop-com
  148. Ultrasonic heaters
  149. Grounding the Filament Winding
  150. Lundahl LL1680 for balanced output
  151. Website is back & new books posted
  152. strange tube G1 S/5
  153. First Tube Amp Needs an Overhaul
  154. pspice models for tubes
  155. Source for iron cores?
  156. Quad EL84 SE question
  157. Use of 12j1l and gu-50 tubes
  158. Shuguang 300B-98C
  159. Philips AG-9016 Upgrades???
  160. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  161. tube amp in a PCB with a toroidal xformer beside it?
  162. Need advice running 220v in USA
  163. My Fender Princeton FD2 chasis (clone)
  164. Parallel-Push-Pull KT66 organ amp conversion ???
  165. new on tubes
  166. Balance 5687 pre-amp any advise??
  167. The Limitations of an EL34 in UL
  168. Source for tube bases....?
  169. 10Y, 26, 27 and 45: relative microphonics
  170. KT77 Mod Question/Idea/Punshishment
  171. KT88 SE with Edcor xfrmr
  172. Diy Distortion Pedal
  173. 45 fans – expanded horizons upstream?
  174. 12B4a Cathode Follower
  175. Hybrid voltage doubler using tube and diode
  176. Finally finished my first tube amp!
  177. advice on an EL84 Push pull Amp schematic
  178. Vintage radio
  179. Look for 12AU7 Preamp Circuit .
  180. PSU question? Going tube rectified
  181. PSU Rebuild Help Pleas
  182. Screeching tubes
  183. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  184. Fisher 800 restoration
  185. stern's ecl86 amp
  186. Look for Western Electric KS-16547-L1 circuit diagram
  187. Help about grommes 500C
  188. Dynaco MK III with 6146A tubes.
  189. Volume pot for Musical Fidelity F22 pre amp.
  190. Don't you just hate it when
  191. Bogen 8417 tube conversion..?
  192. How to Build Unbilical from PS to Phono
  193. Class A SET preamp, help
  194. Grounding MFA Luminescence
  195. custom transformer manufacturers (potted if possible)
  196. To Recap - A Question
  197. KT 44 anyone tried these
  198. Volts AC rating in power supply caps
  199. unfamiliar tube brand
  200. power supply schematic with a 6080 used as a "pass tube"
  201. Electro-Vox LA-210 Preamp; tube
  202. why so CHEAP!?
  203. Antique Electronic Supply
  204. Best Use For My Sansui Iron?
  205. Help on AMC CVT 3030
  206. Heathkit W-5M Red Plate Issue
  207. 1st Post (here) : ) My first project: Boozhound Amp
  208. regulated DC heater supply
  209. Help me pick up some good tubes! Urgent!
  210. CLCRC power supply config
  211. Choke Replacement Question.
  212. What tube instead of 7189
  213. Help on PP EL 34 from Claus Byrith
  214. Datasheet of PTT4 tube?
  215. ready to give up
  216. O-Ring sizes for Tube Dampers
  217. preamp /amp combination question
  218. Strange Transformer Question.....
  219. Audio Note M3/4/5/6/8 schematics
  220. Lundahl LL1540 for SY's heretical?
  221. Henrys
  222. 955 Acorn tubes
  223. Do you know these Ampex mono Amps
  224. Audio Research Resistor Type
  225. What's the best low wattage guitar amp?
  226. volume issues
  227. Need advice for best CCS
  228. confusion in the resistor/capacitor values and B+ supply for the aikido
  229. What are the diferences between these ways of output?
  230. PS for tube preamp
  231. what resistors are in the aikido signal path
  232. clarification of aikido heater supply
  233. Audio Note schematics
  234. Data for PE08/40
  235. PA-060 use
  236. Anode loaded 6080 giving less than unity gain, Why??
  237. Frustration with hum and noise in guitar tube amp
  238. 3/8in thick acrylic - would this make a good chassis?
  239. 6c19p Se?
  240. CF and SRPP in one circuit . .
  241. WE417/437 with battery or RC on cathode
  242. Building a Preamp:Dual Outputs Question
  243. Audio Note Conquest?
  244. metallized caps instead of electrolytics in a tube rectifier power supply?
  245. Power transformer as Parafeed output?
  246. Bogen amp
  247. Noob question about plate load
  248. adjusting gain?
  249. Lowering HT
  250. Kaneda hybrid preamp error ?

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