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

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