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  1. "Preamp" with remote (long)
  2. 6BY5 High Voltage & High Current Choke Input Design P.S.
  3. x-10 d and x-can version 2/3 schematics
  4. Ugly, but versatile, new amp
  5. Capacitor advice needed for AVA PAS rebuild
  6. Mic pre transformers
  7. Gain of JE labs 300B?
  8. Troubleshooting.
  9. new to the forum pre-amp
  10. Preamp output delay
  11. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  12. 1st project hum or buzz
  13. Impedans of trafo for EL504 inSE
  14. Can I use 2C39-B to sound
  15. usage of line out trans.
  16. eagle with tubes ?
  17. Rlim in GZ33 datasheet?
  18. LT1085 Current Regulation for DHT filaments
  19. Help Fixing Bias
  20. MC phono amp
  21. 10M45 Mu-Stage Idea?
  22. Hickok 6000A with 6C33 & 13E1...
  23. Isco 494
  24. looking for spice model of 6HA5 or similar tubes
  25. 6SL7 to 6SN7 substitution in power amp?
  26. Adding Subwoofer output to Aikido preamp circuit
  27. A request for PP 6c33c Schematics
  28. Thumping from left speaker when volume is low
  29. Crosstalk in twintriodes?
  30. Example Schematics?
  31. how to choose a rectifier tube? (specifically octals)
  32. Rather odd valve socket - anyone have any ideas?
  33. PS for GG - look for better channel separation
  34. help! T16 OTL schematic
  35. Bench PSU for tubes
  36. Tube Bogen J330 PA amp
  37. FM Stereo Tuner Tube Schematic ?
  38. Conn organ conversion to amp
  39. Smoking Transformer
  40. Questions on 1:1:1 driver transformer
  41. Pentode vrs Mosfet “MU-Stage”
  42. Transformer center tap connections
  43. dumb question :P KT88...
  44. Tube rectifier & regulator (modified)
  45. Some advice on this power supply
  46. Looking for Amperex C11550/1 data.
  47. Inserting tubes into Express PCB
  48. What do you think of this? (211 A2 SE)
  49. Help w/ diyAudio CCS implementation
  50. First DIY Amp Project
  51. HELP with PHONO and MIC preamps.
  52. CLC vs LCLC: is there any advantages other...
  53. Problem with old Heathkit
  54. Does anyone interested tube rectifier & regulator PCB ?
  55. Velleman K4040 conversion from EL34's to KT88's
  56. finished my PCC88 preamp
  57. Max 300B SE output possible with James 6123HS ?
  58. Who's right re bias adjustment versus plate voltage
  59. voltage current regulator
  60. Yarland 34 ciii amp
  61. CCS/5842/300B ground schematic.
  62. tube sockets
  63. PX25
  64. Research on tubes and circuits simple circuits
  65. using only 1/2 of a dual triode
  66. Some HMMM on my SRPP
  67. Grid Stopper
  68. diy tube amp problem
  69. The Red Light District - another PP EL84 amp
  70. Balanced 300B output for headphones or loudspeakers?
  71. 5692, the best?
  72. Power transformer quality differences
  73. Is it possible to use regulated DC for a rectifier tube?
  74. Transformer Secondary Power
  75. Phono preamp
  76. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  77. Physically small rectifier tube with 5V heaters
  78. Distorting 5687 preamp circuit
  79. Looking for a good 300B datasheet
  80. CCS is your friend!
  81. Valve Pre Amp & Class D Power Amp
  82. heater supply questions
  83. sub-mini valve
  84. Amp kit recommendations
  85. First amp for a new in valves
  86. Loud buzz and hum from one monoblock!!!
  87. Stueyh
  88. Big *** '50s Power Supply, now what? 300B SET ideas...
  89. Phono Preamp Design Needed
  90. antique fender bassman 50 retubed HELP
  91. Severe oscillation in 6L6 amp
  92. How to tweak warmth to a power amp?
  93. Can anyone explain me this Loftin White amp?
  94. Substituting dual triodes
  95. ValveWave-1 My first Tube Project
  96. changing output capacitor value? what should I consider?
  97. motor run caps in the output? good or bad idea?
  98. resistors across the heater voltage then the middle is grounded
  99. Switched Pot Source Needed
  100. transcendar transformer
  101. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  102. Voltage Multipliers
  103. I want to build an AM Tube Tuner
  104. Tube Amp CCS?
  105. S-5 Electronics Tube Amp Kit
  106. Tube amps from eBay (China)
  107. filament supply: batteries v TentLabs?
  108. replace a 5651 tube with a zener?
  109. tube design books
  110. Bogen chb100 input conversion suggestions
  111. MesaBoogie 400+ clone
  112. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  113. R-core xformers from China
  114. Counterpoint Service manual wanted
  115. Two chokes in one pot?
  116. help with a transformer
  117. 311T (211 alike) HIGH power triode
  118. Re-attaching anode cap to 805 or 811A tube
  119. "Fisher Doctor"
  120. Aikido + class D in the output stage
  121. tube-shop-com
  122. Ultrasonic heaters
  123. Grounding the Filament Winding
  124. Lundahl LL1680 for balanced output
  125. Website is back & new books posted
  126. strange tube G1 S/5
  127. First Tube Amp Needs an Overhaul
  128. pspice models for tubes
  129. Source for iron cores?
  130. Quad EL84 SE question
  131. Use of 12j1l and gu-50 tubes
  132. Shuguang 300B-98C
  133. Philips AG-9016 Upgrades???
  134. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  135. tube amp in a PCB with a toroidal xformer beside it?
  136. Need advice running 220v in USA
  137. My Fender Princeton FD2 chasis (clone)
  138. Parallel-Push-Pull KT66 organ amp conversion ???
  139. new on tubes
  140. Balance 5687 pre-amp any advise??
  141. The Limitations of an EL34 in UL
  142. Source for tube bases....?
  143. 10Y, 26, 27 and 45: relative microphonics
  144. KT77 Mod Question/Idea/Punshishment
  145. KT88 SE with Edcor xfrmr
  146. Diy Distortion Pedal
  147. 45 fans – expanded horizons upstream?
  148. 12B4a Cathode Follower
  149. Hybrid voltage doubler using tube and diode
  150. Finally finished my first tube amp!
  151. advice on an EL84 Push pull Amp schematic
  152. Vintage radio
  153. Look for 12AU7 Preamp Circuit .
  154. PSU question? Going tube rectified
  155. PSU Rebuild Help Pleas
  156. Screeching tubes
  157. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  158. Fisher 800 restoration
  159. stern's ecl86 amp
  160. Look for Western Electric KS-16547-L1 circuit diagram
  161. Help about grommes 500C
  162. Dynaco MK III with 6146A tubes.
  163. Volume pot for Musical Fidelity F22 pre amp.
  164. Don't you just hate it when
  165. Bogen 8417 tube conversion..?
  166. How to Build Unbilical from PS to Phono
  167. Class A SET preamp, help
  168. Grounding MFA Luminescence
  169. custom transformer manufacturers (potted if possible)
  170. To Recap - A Question
  171. KT 44 anyone tried these
  172. Volts AC rating in power supply caps
  173. unfamiliar tube brand
  174. power supply schematic with a 6080 used as a "pass tube"
  175. Electro-Vox LA-210 Preamp; tube
  176. why so CHEAP!?
  177. Antique Electronic Supply
  178. Best Use For My Sansui Iron?
  179. Help on AMC CVT 3030
  180. Heathkit W-5M Red Plate Issue
  181. 1st Post (here) : ) My first project: Boozhound Amp
  182. regulated DC heater supply
  183. Help me pick up some good tubes! Urgent!
  184. CLCRC power supply config
  185. Choke Replacement Question.
  186. What tube instead of 7189
  187. Help on PP EL 34 from Claus Byrith
  188. Datasheet of PTT4 tube?
  189. ready to give up
  190. O-Ring sizes for Tube Dampers
  191. preamp /amp combination question
  192. Strange Transformer Question.....
  193. Audio Note M3/4/5/6/8 schematics
  194. Lundahl LL1540 for SY's heretical?
  195. Henrys
  196. 955 Acorn tubes
  197. Do you know these Ampex mono Amps
  198. Audio Research Resistor Type
  199. What's the best low wattage guitar amp?
  200. volume issues
  201. Need advice for best CCS
  202. confusion in the resistor/capacitor values and B+ supply for the aikido
  203. What are the diferences between these ways of output?
  204. PS for tube preamp
  205. what resistors are in the aikido signal path
  206. clarification of aikido heater supply
  207. Audio Note schematics
  208. Data for PE08/40
  209. PA-060 use
  210. Anode loaded 6080 giving less than unity gain, Why??
  211. Frustration with hum and noise in guitar tube amp
  212. 3/8in thick acrylic - would this make a good chassis?
  213. 6c19p Se?
  214. CF and SRPP in one circuit . .
  215. WE417/437 with battery or RC on cathode
  216. Building a Preamp:Dual Outputs Question
  217. Audio Note Conquest?
  218. metallized caps instead of electrolytics in a tube rectifier power supply?
  219. Power transformer as Parafeed output?
  220. Bogen amp
  221. Noob question about plate load
  222. adjusting gain?
  223. Lowering HT
  224. Kaneda hybrid preamp error ?
  225. Match priorities to schematic & toobs
  226. what do you think of this integrated?
  227. Modified Audio Note M7 Tube Pre Amplifier PCB
  228. lundahl xformers - are they potted?
  229. Beginner's very simple line pre-amp
  230. UX-226 Preamp
  231. Difference between microphones
  232. sv572-30, where to find
  233. E182CC - how to connect heater supply?
  234. Aikido pre tube for Minimum Gain
  235. 14gt8...clipping diodes?
  236. HPHV regulator
  237. Grounded Grid
  238. NYAL Super-It - removing volume pots, what resistor value to replace them?
  239. Another Bogen Conversion
  240. Trouble with my "new" PAS-3 Preamp
  241. Tubalizer, Monica
  242. musical angel modified marantz 7 preamp schematics
  243. Can anyone suggest the "best" 300B SE sound quality schematic for a beginner like me?
  244. Solder directly on tube?
  245. article in NY Times on Russian tubes
  246. Sovtek's sad tale
  247. audio research LS25 preamp
  248. Schematic needed PL519 Push-Pull Ultra-Linear amp
  249. Use 6C19 in a phono amp?
  250. 6L6 Push pull -- Power tranny question

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