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  1. If you are looking to try balanced AC power....
  2. The best Coupling cap (under $20)
  3. What makes a speaker "tube-friendly"?
  4. Using 6L6 for 300b driver
  5. Heater reference
  6. 6G15 output transformer selection
  7. Morgan Jones and cascodes
  8. 6A3/6B4G/6S4S(2A3/2S4S) project
  9. blues junior complaints and 6G15 question
  10. Question about changing a hybrid
  11. High-end Class A valve amplifiers will be illegal in USA?
  12. transformerless supply
  13. "Quasi" ultralinear experiment - questions...
  14. Help on a LUXMAN MQ 3600
  15. Changing from 6X4 to EZ81
  16. Design questions, driver stage for SE.
  17. S5 K-12G Question
  18. Ideas for a tube that heavily distorts ?
  19. CCS current sink in the output of my 2 tube 6080 amp.
  20. What do you think about my design (based on IMPAMP)
  21. spearinol oil (in ASC caps)
  22. Larger chassis Hole Punches
  23. HV Diode Selection
  24. Need help form Germany
  25. Output Impedance
  26. How to connect Gridchoke?
  27. Microphone In Guitar amp Question
  28. Triode connecting a pentode?
  29. help on line pre-amp
  30. Edcor P-P Transformers
  31. chassis work in NYC area
  32. low THD guitar preamp
  33. Please help ID this rectifier:
  34. Power Supply Voltage For 5881/6L6 Amp
  35. Audio Electronic Supply AE-25DJH
  36. Trouble: Main transfo short?
  37. help with chassis layout
  38. "Preamp" with remote (long)
  39. 6BY5 High Voltage & High Current Choke Input Design P.S.
  40. x-10 d and x-can version 2/3 schematics
  41. Ugly, but versatile, new amp
  42. Capacitor advice needed for AVA PAS rebuild
  43. Mic pre transformers
  44. Gain of JE labs 300B?
  45. Troubleshooting.
  46. new to the forum pre-amp
  47. Preamp output delay
  48. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  49. 1st project hum or buzz
  50. Impedans of trafo for EL504 inSE
  51. Can I use 2C39-B to sound
  52. usage of line out trans.
  53. eagle with tubes ?
  54. Rlim in GZ33 datasheet?
  55. LT1085 Current Regulation for DHT filaments
  56. Help Fixing Bias
  57. MC phono amp
  58. 10M45 Mu-Stage Idea?
  59. Hickok 6000A with 6C33 & 13E1...
  60. Isco 494
  61. looking for spice model of 6HA5 or similar tubes
  62. 6SL7 to 6SN7 substitution in power amp?
  63. Adding Subwoofer output to Aikido preamp circuit
  64. A request for PP 6c33c Schematics
  65. Thumping from left speaker when volume is low
  66. Crosstalk in twintriodes?
  67. Example Schematics?
  68. how to choose a rectifier tube? (specifically octals)
  69. Rather odd valve socket - anyone have any ideas?
  70. PS for GG - look for better channel separation
  71. help! T16 OTL schematic
  72. Bench PSU for tubes
  73. Tube Bogen J330 PA amp
  74. FM Stereo Tuner Tube Schematic ?
  75. Conn organ conversion to amp
  76. Smoking Transformer
  77. Questions on 1:1:1 driver transformer
  78. Pentode vrs Mosfet “MU-Stage”
  79. Transformer center tap connections
  80. dumb question :P KT88...
  81. Tube rectifier & regulator (modified)
  82. Some advice on this power supply
  83. Looking for Amperex C11550/1 data.
  84. Inserting tubes into Express PCB
  85. What do you think of this? (211 A2 SE)
  86. Help w/ diyAudio CCS implementation
  87. First DIY Amp Project
  88. HELP with PHONO and MIC preamps.
  89. CLC vs LCLC: is there any advantages other...
  90. Problem with old Heathkit
  91. Does anyone interested tube rectifier & regulator PCB ?
  92. Velleman K4040 conversion from EL34's to KT88's
  93. finished my PCC88 preamp
  94. Max 300B SE output possible with James 6123HS ?
  95. Who's right re bias adjustment versus plate voltage
  96. voltage current regulator
  97. Yarland 34 ciii amp
  98. CCS/5842/300B ground schematic.
  99. tube sockets
  100. PX25
  101. Research on tubes and circuits simple circuits
  102. using only 1/2 of a dual triode
  103. Some HMMM on my SRPP
  104. Grid Stopper
  105. diy tube amp problem
  106. The Red Light District - another PP EL84 amp
  107. Balanced 300B output for headphones or loudspeakers?
  108. 5692, the best?
  109. Power transformer quality differences
  110. Is it possible to use regulated DC for a rectifier tube?
  111. Transformer Secondary Power
  112. Phono preamp
  113. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  114. Physically small rectifier tube with 5V heaters
  115. Distorting 5687 preamp circuit
  116. Looking for a good 300B datasheet
  117. CCS is your friend!
  118. Valve Pre Amp & Class D Power Amp
  119. heater supply questions
  120. sub-mini valve
  121. Amp kit recommendations
  122. First amp for a new in valves
  123. Loud buzz and hum from one monoblock!!!
  124. Stueyh
  125. Big *** '50s Power Supply, now what? 300B SET ideas...
  126. Phono Preamp Design Needed
  127. antique fender bassman 50 retubed HELP
  128. Severe oscillation in 6L6 amp
  129. How to tweak warmth to a power amp?
  130. Can anyone explain me this Loftin White amp?
  131. Substituting dual triodes
  132. ValveWave-1 My first Tube Project
  133. changing output capacitor value? what should I consider?
  134. motor run caps in the output? good or bad idea?
  135. resistors across the heater voltage then the middle is grounded
  136. Switched Pot Source Needed
  137. transcendar transformer
  138. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  139. Voltage Multipliers
  140. I want to build an AM Tube Tuner
  141. Tube Amp CCS?
  142. S-5 Electronics Tube Amp Kit
  143. Tube amps from eBay (China)
  144. filament supply: batteries v TentLabs?
  145. replace a 5651 tube with a zener?
  146. tube design books
  147. Bogen chb100 input conversion suggestions
  148. MesaBoogie 400+ clone
  149. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  150. R-core xformers from China
  151. Counterpoint Service manual wanted
  152. Two chokes in one pot?
  153. help with a transformer
  154. 311T (211 alike) HIGH power triode
  155. Re-attaching anode cap to 805 or 811A tube
  156. "Fisher Doctor"
  157. Aikido + class D in the output stage
  158. tube-shop-com
  159. Ultrasonic heaters
  160. Grounding the Filament Winding
  161. Lundahl LL1680 for balanced output
  162. Website is back & new books posted
  163. strange tube G1 S/5
  164. First Tube Amp Needs an Overhaul
  165. pspice models for tubes
  166. Source for iron cores?
  167. Quad EL84 SE question
  168. Use of 12j1l and gu-50 tubes
  169. Shuguang 300B-98C
  170. Philips AG-9016 Upgrades???
  171. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  172. tube amp in a PCB with a toroidal xformer beside it?
  173. Need advice running 220v in USA
  174. My Fender Princeton FD2 chasis (clone)
  175. Parallel-Push-Pull KT66 organ amp conversion ???
  176. new on tubes
  177. Balance 5687 pre-amp any advise??
  178. The Limitations of an EL34 in UL
  179. Source for tube bases....?
  180. 10Y, 26, 27 and 45: relative microphonics
  181. KT77 Mod Question/Idea/Punshishment
  182. KT88 SE with Edcor xfrmr
  183. Diy Distortion Pedal
  184. 45 fans – expanded horizons upstream?
  185. 12B4a Cathode Follower
  186. Hybrid voltage doubler using tube and diode
  187. Finally finished my first tube amp!
  188. advice on an EL84 Push pull Amp schematic
  189. Vintage radio
  190. Look for 12AU7 Preamp Circuit .
  191. PSU question? Going tube rectified
  192. PSU Rebuild Help Pleas
  193. Screeching tubes
  194. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  195. Fisher 800 restoration
  196. stern's ecl86 amp
  197. Look for Western Electric KS-16547-L1 circuit diagram
  198. Help about grommes 500C
  199. Dynaco MK III with 6146A tubes.
  200. Volume pot for Musical Fidelity F22 pre amp.
  201. Don't you just hate it when
  202. Bogen 8417 tube conversion..?
  203. How to Build Unbilical from PS to Phono
  204. Class A SET preamp, help
  205. Grounding MFA Luminescence
  206. custom transformer manufacturers (potted if possible)
  207. To Recap - A Question
  208. KT 44 anyone tried these
  209. Volts AC rating in power supply caps
  210. unfamiliar tube brand
  211. power supply schematic with a 6080 used as a "pass tube"
  212. Electro-Vox LA-210 Preamp; tube
  213. why so CHEAP!?
  214. Antique Electronic Supply
  215. Best Use For My Sansui Iron?
  216. Help on AMC CVT 3030
  217. Heathkit W-5M Red Plate Issue
  218. 1st Post (here) : ) My first project: Boozhound Amp
  219. regulated DC heater supply
  220. Help me pick up some good tubes! Urgent!
  221. CLCRC power supply config
  222. Choke Replacement Question.
  223. What tube instead of 7189
  224. Help on PP EL 34 from Claus Byrith
  225. Datasheet of PTT4 tube?
  226. ready to give up
  227. O-Ring sizes for Tube Dampers
  228. preamp /amp combination question
  229. Strange Transformer Question.....
  230. Audio Note M3/4/5/6/8 schematics
  231. Lundahl LL1540 for SY's heretical?
  232. Henrys
  233. 955 Acorn tubes
  234. Do you know these Ampex mono Amps
  235. Audio Research Resistor Type
  236. What's the best low wattage guitar amp?
  237. volume issues
  238. Need advice for best CCS
  239. confusion in the resistor/capacitor values and B+ supply for the aikido
  240. What are the diferences between these ways of output?
  241. PS for tube preamp
  242. what resistors are in the aikido signal path
  243. clarification of aikido heater supply
  244. Audio Note schematics
  245. Data for PE08/40
  246. PA-060 use
  247. Anode loaded 6080 giving less than unity gain, Why??
  248. Frustration with hum and noise in guitar tube amp
  249. 3/8in thick acrylic - would this make a good chassis?
  250. 6c19p Se?

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