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  1. Replacing ECC83 in Leak Stereo50 with ECC808
  2. 6N30/6H30 Datasheet
  3. Equivalents to 6888
  4. Input voltage
  5. Converting from integrated to pure amp
  6. Final schematic, I think?
  7. Toroidal core saturation
  8. Mystery SE OPT
  9. Is this a Spud Amp ?
  10. input cap V rating
  11. 6922 Heater - BIAS
  12. JJ 2A3-40 Watt?
  13. 12AU7 testing result: Are these tubes still good?
  14. "OTK" stamp on russian devices
  15. Where did nj7p.org go ?
  16. New to forum! Or: A few newbie questions
  17. Powersuply Le Bong?
  18. Fixed Bias: the ups and downs
  19. Bias Adjustment Question
  20. Multiple secondaries hook-up!!!
  21. Plate voltage related to sound?
  22. Array speakers & OTL
  23. First Post - Hum on 5687 Pre-amp
  24. DC powered amps
  25. Evaluating Unknown Power Transformers
  26. 0v grid bias with UL connection?
  27. LV Filament supply quandry
  28. which tube using NonDirect heat with best-class sound ?
  29. Surround Decoder - Subtract amplifier
  30. New To Forum - First Post
  31. Try to understand
  32. tube site
  33. OTL with 6S19P?
  34. What should B+ on 300B push-pull be?
  35. Regulated PSU with EL84
  36. How do I design minimum current for 35W PP AMP
  37. Buying bits'n'bobs...
  38. Can't make this address work.....
  39. schematics for 6C33 single ended OTL?
  40. valve preamp
  41. trio W-38 problems
  42. Otl Se
  43. My 2A3 is being left behind
  44. Wal-Mart power supplies
  45. Nice deal!
  46. Look for high-voltage regulator projects
  47. Typical plate Voltage for el34
  48. Arc Sp8
  49. New Phono amp - developing stage
  50. CCS Bang for the buck output or driver?
  51. pentode driver sanity check - before i build
  52. 6av6 mini pre didn t work
  53. CCS in the output stage
  54. Looking for Schematic using KC3 Preamp ?
  55. If you are looking to try balanced AC power....
  56. The best Coupling cap (under $20)
  57. What makes a speaker "tube-friendly"?
  58. Using 6L6 for 300b driver
  59. Heater reference
  60. 6G15 output transformer selection
  61. Morgan Jones and cascodes
  62. 6A3/6B4G/6S4S(2A3/2S4S) project
  63. Question about changing a hybrid
  64. High-end Class A valve amplifiers will be illegal in USA?
  65. transformerless supply
  66. "Quasi" ultralinear experiment - questions...
  67. Help on a LUXMAN MQ 3600
  68. Changing from 6X4 to EZ81
  69. Design questions, driver stage for SE.
  70. S5 K-12G Question
  71. Ideas for a tube that heavily distorts ?
  72. CCS current sink in the output of my 2 tube 6080 amp.
  73. What do you think about my design (based on IMPAMP)
  74. Larger chassis Hole Punches
  75. Need help form Germany
  76. Output Impedance
  77. How to connect Gridchoke?
  78. Triode connecting a pentode?
  79. help on line pre-amp
  80. Edcor P-P Transformers
  81. chassis work in NYC area
  82. Please help ID this rectifier:
  83. Power Supply Voltage For 5881/6L6 Amp
  84. Audio Electronic Supply AE-25DJH
  85. Trouble: Main transfo short?
  86. help with chassis layout
  87. "Preamp" with remote (long)
  88. 6BY5 High Voltage & High Current Choke Input Design P.S.
  89. x-10 d and x-can version 2/3 schematics
  90. Ugly, but versatile, new amp
  91. Capacitor advice needed for AVA PAS rebuild
  92. Mic pre transformers
  93. Gain of JE labs 300B?
  94. Troubleshooting.
  95. new to the forum pre-amp
  96. Preamp output delay
  97. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  98. 1st project hum or buzz
  99. Impedans of trafo for EL504 inSE
  100. Can I use 2C39-B to sound
  101. usage of line out trans.
  102. eagle with tubes ?
  103. Rlim in GZ33 datasheet?
  104. LT1085 Current Regulation for DHT filaments
  105. Help Fixing Bias
  106. MC phono amp
  107. 10M45 Mu-Stage Idea?
  108. Isco 494
  109. looking for spice model of 6HA5 or similar tubes
  110. 6SL7 to 6SN7 substitution in power amp?
  111. Adding Subwoofer output to Aikido preamp circuit
  112. A request for PP 6c33c Schematics
  113. Thumping from left speaker when volume is low
  114. Crosstalk in twintriodes?
  115. Example Schematics?
  116. how to choose a rectifier tube? (specifically octals)
  117. Rather odd valve socket - anyone have any ideas?
  118. PS for GG - look for better channel separation
  119. help! T16 OTL schematic
  120. Bench PSU for tubes
  121. FM Stereo Tuner Tube Schematic ?
  122. Smoking Transformer
  123. Questions on 1:1:1 driver transformer
  124. Pentode vrs Mosfet “MU-Stage”
  125. Transformer center tap connections
  126. dumb question :P KT88...
  127. Tube rectifier & regulator (modified)
  128. Some advice on this power supply
  129. Looking for Amperex C11550/1 data.
  130. Inserting tubes into Express PCB
  131. What do you think of this? (211 A2 SE)
  132. Help w/ diyAudio CCS implementation
  133. First DIY Amp Project
  134. HELP with PHONO and MIC preamps.
  135. CLC vs LCLC: is there any advantages other...
  136. Problem with old Heathkit
  137. Does anyone interested tube rectifier & regulator PCB ?
  138. Velleman K4040 conversion from EL34's to KT88's
  139. finished my PCC88 preamp
  140. Max 300B SE output possible with James 6123HS ?
  141. Who's right re bias adjustment versus plate voltage
  142. voltage current regulator
  143. Yarland 34 ciii amp
  144. CCS/5842/300B ground schematic.
  145. tube sockets
  146. PX25
  147. Research on tubes and circuits simple circuits
  148. using only 1/2 of a dual triode
  149. Some HMMM on my SRPP
  150. Grid Stopper
  151. diy tube amp problem
  152. The Red Light District - another PP EL84 amp
  153. Balanced 300B output for headphones or loudspeakers?
  154. 5692, the best?
  155. Power transformer quality differences
  156. Is it possible to use regulated DC for a rectifier tube?
  157. Transformer Secondary Power
  158. Phono preamp
  159. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  160. Physically small rectifier tube with 5V heaters
  161. Distorting 5687 preamp circuit
  162. Looking for a good 300B datasheet
  163. CCS is your friend!
  164. Valve Pre Amp & Class D Power Amp
  165. heater supply questions
  166. sub-mini valve
  167. Amp kit recommendations
  168. First amp for a new in valves
  169. Loud buzz and hum from one monoblock!!!
  170. Stueyh
  171. Big *** '50s Power Supply, now what? 300B SET ideas...
  172. Phono Preamp Design Needed
  173. Severe oscillation in 6L6 amp
  174. How to tweak warmth to a power amp?
  175. Can anyone explain me this Loftin White amp?
  176. Substituting dual triodes
  177. ValveWave-1 My first Tube Project
  178. changing output capacitor value? what should I consider?
  179. motor run caps in the output? good or bad idea?
  180. resistors across the heater voltage then the middle is grounded
  181. Switched Pot Source Needed
  182. transcendar transformer
  183. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  184. Voltage Multipliers
  185. I want to build an AM Tube Tuner
  186. Tube Amp CCS?
  187. S-5 Electronics Tube Amp Kit
  188. Tube amps from eBay (China)
  189. filament supply: batteries v TentLabs?
  190. replace a 5651 tube with a zener?
  191. tube design books
  192. Bogen chb100 input conversion suggestions
  193. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  194. R-core xformers from China
  195. Counterpoint Service manual wanted
  196. Two chokes in one pot?
  197. help with a transformer
  198. 311T (211 alike) HIGH power triode
  199. Re-attaching anode cap to 805 or 811A tube
  200. "Fisher Doctor"
  201. Aikido + class D in the output stage
  202. tube-shop-com
  203. Ultrasonic heaters
  204. Grounding the Filament Winding
  205. Lundahl LL1680 for balanced output
  206. Website is back & new books posted
  207. strange tube G1 S/5
  208. First Tube Amp Needs an Overhaul
  209. pspice models for tubes
  210. Source for iron cores?
  211. Quad EL84 SE question
  212. Use of 12j1l and gu-50 tubes
  213. Shuguang 300B-98C
  214. Philips AG-9016 Upgrades???
  215. My DIY Pre-Amplifier used 5692 and 45 Tube with output transformer
  216. tube amp in a PCB with a toroidal xformer beside it?
  217. Need advice running 220v in USA
  218. Parallel-Push-Pull KT66 organ amp conversion ???
  219. new on tubes
  220. Balance 5687 pre-amp any advise??
  221. The Limitations of an EL34 in UL
  222. Source for tube bases....?
  223. 10Y, 26, 27 and 45: relative microphonics
  224. KT77 Mod Question/Idea/Punshishment
  225. KT88 SE with Edcor xfrmr
  226. Diy Distortion Pedal
  227. 45 fans – expanded horizons upstream?
  228. 12B4a Cathode Follower
  229. Hybrid voltage doubler using tube and diode
  230. Finally finished my first tube amp!
  231. advice on an EL84 Push pull Amp schematic
  232. Vintage radio
  233. Look for 12AU7 Preamp Circuit .
  234. PSU question? Going tube rectified
  235. PSU Rebuild Help Pleas
  236. Screeching tubes
  237. help in adjusting Vout in the power supply of the "Brute force in a line stage" by Er
  238. Fisher 800 restoration
  239. stern's ecl86 amp
  240. Look for Western Electric KS-16547-L1 circuit diagram
  241. Help about grommes 500C
  242. Dynaco MK III with 6146A tubes.
  243. Volume pot for Musical Fidelity F22 pre amp.
  244. Don't you just hate it when
  245. Bogen 8417 tube conversion..?
  246. How to Build Unbilical from PS to Phono
  247. Class A SET preamp, help
  248. Grounding MFA Luminescence
  249. custom transformer manufacturers (potted if possible)
  250. To Recap - A Question

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