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  1. Larger chassis Hole Punches
  2. HV Diode Selection
  3. Need help form Germany
  4. Output Impedance
  5. How to connect Gridchoke?
  6. Microphone In Guitar amp Question
  7. Triode connecting a pentode?
  8. help on line pre-amp
  9. Edcor P-P Transformers
  10. chassis work in NYC area
  11. low THD guitar preamp
  12. Please help ID this rectifier:
  13. Power Supply Voltage For 5881/6L6 Amp
  14. Audio Electronic Supply AE-25DJH
  15. Trouble: Main transfo short?
  16. help with chassis layout
  17. "Preamp" with remote (long)
  18. 6BY5 High Voltage & High Current Choke Input Design P.S.
  19. x-10 d and x-can version 2/3 schematics
  20. Ugly, but versatile, new amp
  21. Capacitor advice needed for AVA PAS rebuild
  22. Mic pre transformers
  23. Gain of JE labs 300B?
  24. Troubleshooting.
  25. new to the forum pre-amp
  26. Preamp output delay
  27. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  28. 1st project hum or buzz
  29. Impedans of trafo for EL504 inSE
  30. Can I use 2C39-B to sound
  31. usage of line out trans.
  32. eagle with tubes ?
  33. Rlim in GZ33 datasheet?
  34. LT1085 Current Regulation for DHT filaments
  35. Help Fixing Bias
  36. MC phono amp
  37. 10M45 Mu-Stage Idea?
  38. Hickok 6000A with 6C33 & 13E1...
  39. Isco 494
  40. looking for spice model of 6HA5 or similar tubes
  41. 6SL7 to 6SN7 substitution in power amp?
  42. Adding Subwoofer output to Aikido preamp circuit
  43. A request for PP 6c33c Schematics
  44. Thumping from left speaker when volume is low
  45. Crosstalk in twintriodes?
  46. Example Schematics?
  47. how to choose a rectifier tube? (specifically octals)
  48. Rather odd valve socket - anyone have any ideas?
  49. PS for GG - look for better channel separation
  50. help! T16 OTL schematic
  51. Bench PSU for tubes
  52. Tube Bogen J330 PA amp
  53. FM Stereo Tuner Tube Schematic ?
  54. Conn organ conversion to amp
  55. Smoking Transformer
  56. Questions on 1:1:1 driver transformer
  57. Pentode vrs Mosfet “MU-Stage”
  58. Transformer center tap connections
  59. dumb question :P KT88...
  60. Tube rectifier & regulator (modified)
  61. Some advice on this power supply
  62. Looking for Amperex C11550/1 data.
  63. Inserting tubes into Express PCB
  64. What do you think of this? (211 A2 SE)
  65. Help w/ diyAudio CCS implementation
  66. First DIY Amp Project
  67. HELP with PHONO and MIC preamps.
  68. CLC vs LCLC: is there any advantages other...
  69. Problem with old Heathkit
  70. Does anyone interested tube rectifier & regulator PCB ?
  71. Velleman K4040 conversion from EL34's to KT88's
  72. finished my PCC88 preamp
  73. Max 300B SE output possible with James 6123HS ?
  74. Who's right re bias adjustment versus plate voltage
  75. voltage current regulator
  76. Yarland 34 ciii amp
  77. CCS/5842/300B ground schematic.
  78. tube sockets
  79. PX25
  80. Research on tubes and circuits simple circuits
  81. using only 1/2 of a dual triode
  82. Some HMMM on my SRPP
  83. Grid Stopper
  84. diy tube amp problem
  85. The Red Light District - another PP EL84 amp
  86. Balanced 300B output for headphones or loudspeakers?
  87. 5692, the best?
  88. Power transformer quality differences
  89. Is it possible to use regulated DC for a rectifier tube?
  90. Transformer Secondary Power
  91. Phono preamp
  92. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  93. Physically small rectifier tube with 5V heaters
  94. Distorting 5687 preamp circuit
  95. Looking for a good 300B datasheet
  96. CCS is your friend!
  97. Valve Pre Amp & Class D Power Amp
  98. heater supply questions
  99. sub-mini valve
  100. Amp kit recommendations
  101. First amp for a new in valves
  102. Loud buzz and hum from one monoblock!!!
  103. Stueyh
  104. Big *** '50s Power Supply, now what? 300B SET ideas...
  105. Phono Preamp Design Needed
  106. antique fender bassman 50 retubed HELP
  107. Severe oscillation in 6L6 amp
  108. How to tweak warmth to a power amp?
  109. Can anyone explain me this Loftin White amp?
  110. Substituting dual triodes
  111. ValveWave-1 My first Tube Project
  112. changing output capacitor value? what should I consider?
  113. motor run caps in the output? good or bad idea?
  114. resistors across the heater voltage then the middle is grounded
  115. Switched Pot Source Needed
  116. transcendar transformer
  117. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  118. Voltage Multipliers
  119. I want to build an AM Tube Tuner
  120. Tube Amp CCS?
  121. S-5 Electronics Tube Amp Kit
  122. Tube amps from eBay (China)
  123. filament supply: batteries v TentLabs?
  124. replace a 5651 tube with a zener?
  125. tube design books
  126. Bogen chb100 input conversion suggestions
  127. MesaBoogie 400+ clone
  128. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  129. R-core xformers from China
  130. Counterpoint Service manual wanted
  131. Two chokes in one pot?
  132. help with a transformer
  133. 311T (211 alike) HIGH power triode
  134. Re-attaching anode cap to 805 or 811A tube
  135. "Fisher Doctor"
  136. Aikido + class D in the output stage
  137. tube-shop-com
  138. Ultrasonic heaters
  139. Grounding the Filament Winding
  140. Lundahl LL1680 for balanced output
  141. Website is back & new books posted
  142. strange tube G1 S/5
  143. First Tube Amp Needs an Overhaul
  144. pspice models for tubes
  145. Source for iron cores?
  146. Quad EL84 SE question
  147. Use of 12j1l and gu-50 tubes
  148. Shuguang 300B-98C
  149. Philips AG-9016 Upgrades???
  150. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  151. tube amp in a PCB with a toroidal xformer beside it?
  152. Need advice running 220v in USA
  153. My Fender Princeton FD2 chasis (clone)
  154. Parallel-Push-Pull KT66 organ amp conversion ???
  155. new on tubes
  156. Balance 5687 pre-amp any advise??
  157. The Limitations of an EL34 in UL
  158. Source for tube bases....?
  159. 10Y, 26, 27 and 45: relative microphonics
  160. KT77 Mod Question/Idea/Punshishment
  161. KT88 SE with Edcor xfrmr
  162. Diy Distortion Pedal
  163. 45 fans – expanded horizons upstream?
  164. 12B4a Cathode Follower
  165. Hybrid voltage doubler using tube and diode
  166. Finally finished my first tube amp!
  167. advice on an EL84 Push pull Amp schematic
  168. Vintage radio
  169. Look for 12AU7 Preamp Circuit .
  170. PSU question? Going tube rectified
  171. PSU Rebuild Help Pleas
  172. Screeching tubes
  173. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  174. Fisher 800 restoration
  175. stern's ecl86 amp
  176. Look for Western Electric KS-16547-L1 circuit diagram
  177. Help about grommes 500C
  178. Dynaco MK III with 6146A tubes.
  179. Volume pot for Musical Fidelity F22 pre amp.
  180. Don't you just hate it when
  181. Bogen 8417 tube conversion..?
  182. How to Build Unbilical from PS to Phono
  183. Class A SET preamp, help
  184. Grounding MFA Luminescence
  185. custom transformer manufacturers (potted if possible)
  186. To Recap - A Question
  187. KT 44 anyone tried these
  188. Volts AC rating in power supply caps
  189. unfamiliar tube brand
  190. power supply schematic with a 6080 used as a "pass tube"
  191. Electro-Vox LA-210 Preamp; tube
  192. why so CHEAP!?
  193. Antique Electronic Supply
  194. Best Use For My Sansui Iron?
  195. Help on AMC CVT 3030
  196. Heathkit W-5M Red Plate Issue
  197. 1st Post (here) : ) My first project: Boozhound Amp
  198. regulated DC heater supply
  199. Help me pick up some good tubes! Urgent!
  200. CLCRC power supply config
  201. Choke Replacement Question.
  202. What tube instead of 7189
  203. Help on PP EL 34 from Claus Byrith
  204. Datasheet of PTT4 tube?
  205. ready to give up
  206. O-Ring sizes for Tube Dampers
  207. preamp /amp combination question
  208. Strange Transformer Question.....
  209. Audio Note M3/4/5/6/8 schematics
  210. Lundahl LL1540 for SY's heretical?
  211. Henrys
  212. 955 Acorn tubes
  213. Do you know these Ampex mono Amps
  214. Audio Research Resistor Type
  215. What's the best low wattage guitar amp?
  216. volume issues
  217. Need advice for best CCS
  218. confusion in the resistor/capacitor values and B+ supply for the aikido
  219. What are the diferences between these ways of output?
  220. PS for tube preamp
  221. what resistors are in the aikido signal path
  222. clarification of aikido heater supply
  223. Audio Note schematics
  224. Data for PE08/40
  225. PA-060 use
  226. Anode loaded 6080 giving less than unity gain, Why??
  227. Frustration with hum and noise in guitar tube amp
  228. 3/8in thick acrylic - would this make a good chassis?
  229. 6c19p Se?
  230. CF and SRPP in one circuit . .
  231. WE417/437 with battery or RC on cathode
  232. Building a Preamp:Dual Outputs Question
  233. Audio Note Conquest?
  234. metallized caps instead of electrolytics in a tube rectifier power supply?
  235. Power transformer as Parafeed output?
  236. Bogen amp
  237. Noob question about plate load
  238. adjusting gain?
  239. Lowering HT
  240. Kaneda hybrid preamp error ?
  241. Match priorities to schematic & toobs
  242. what do you think of this integrated?
  243. Modified Audio Note M7 Tube Pre Amplifier PCB
  244. lundahl xformers - are they potted?
  245. Beginner's very simple line pre-amp
  246. UX-226 Preamp
  247. Difference between microphones
  248. sv572-30, where to find
  249. E182CC - how to connect heater supply?
  250. Aikido pre tube for Minimum Gain

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