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  1. what to do?
  2. A suspect EL34
  3. Best way of reducing heater voltage?
  4. Musical Instrument tube amp part suppliers
  5. tubelab
  6. My first power amp
  7. El34 SE pentode
  8. All Electron Tubes Manufacturers
  9. Mu stage driver
  10. two questions on Parafeed amplifier
  11. 6AU5GT
  12. Connection advice
  13. 'Tube'-ing a reel-to-reel player.
  14. EL34 make up by PCB
  15. wanted RIAA schematic
  16. What is the best software to create tube schematic
  17. Soft clipping acceptable?
  18. help for this amp
  19. Pentode PP amp for comments, please
  20. 966A rectifier
  21. 938 power triode
  22. PL36 PP Amplifier 22W Full construction details
  23. Quick question about the output of my amp
  24. Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
  25. An "All American" tube Project
  26. Aikido and output transformer
  27. Why are Hammond SE OPTs dissed? Heavier than the competition...
  28. Driver stage headroom
  29. Help me before I deal hot electric death to myself (PS question)
  30. AVO CT-160
  31. Two cathode resistor bypass questions
  32. Home-Made Tube Guitar Heads
  33. What do you guys think?
  34. Antique Sound Lab Aq1003
  35. Audiomaster integrated (Valve) amp
  36. PP Amp using 811A
  37. Replacing ECC83 in Leak Stereo50 with ECC808
  38. 6N30/6H30 Datasheet
  39. Equivalents to 6888
  40. Input voltage
  41. Converting from integrated to pure amp
  42. Final schematic, I think?
  43. Toroidal core saturation
  44. Mystery SE OPT
  45. Is this a Spud Amp ?
  46. input cap V rating
  47. 6922 Heater - BIAS
  48. JJ 2A3-40 Watt?
  49. 12AU7 testing result: Are these tubes still good?
  50. "OTK" stamp on russian devices
  51. Where did nj7p.org go ?
  52. New to forum! Or: A few newbie questions
  53. Powersuply Le Bong?
  54. Fixed Bias: the ups and downs
  55. Bias Adjustment Question
  56. Multiple secondaries hook-up!!!
  57. Plate voltage related to sound?
  58. Array speakers & OTL
  59. First Post - Hum on 5687 Pre-amp
  60. DC powered amps
  61. Evaluating Unknown Power Transformers
  62. 0v grid bias with UL connection?
  63. LV Filament supply quandry
  64. which tube using NonDirect heat with best-class sound ?
  65. Surround Decoder - Subtract amplifier
  66. New To Forum - First Post
  67. Try to understand
  68. tube site
  69. OTL with 6S19P?
  70. What should B+ on 300B push-pull be?
  71. Regulated PSU with EL84
  72. How do I design minimum current for 35W PP AMP
  73. Buying bits'n'bobs...
  74. Can't make this address work.....
  75. schematics for 6C33 single ended OTL?
  76. Guitar amp input tube paralleled
  77. valve preamp
  78. trio W-38 problems
  79. Cheap Russian 2.2uF 400V PIO Capacitor
  80. Otl Se
  81. My 2A3 is being left behind
  82. SE for Bass?
  83. Wal-Mart power supplies
  84. Nice deal!
  85. Look for high-voltage regulator projects
  86. Typical plate Voltage for el34
  87. Arc Sp8
  88. New Phono amp - developing stage
  89. fender princeton 5D2.. DONE!
  90. CCS Bang for the buck output or driver?
  91. pentode driver sanity check - before i build
  92. 6av6 mini pre didn t work
  93. CCS in the output stage
  94. Looking for Schematic using KC3 Preamp ?
  95. If you are looking to try balanced AC power....
  96. The best Coupling cap (under $20)
  97. What makes a speaker "tube-friendly"?
  98. Using 6L6 for 300b driver
  99. Heater reference
  100. 6G15 output transformer selection
  101. Morgan Jones and cascodes
  102. 6A3/6B4G/6S4S(2A3/2S4S) project
  103. blues junior complaints and 6G15 question
  104. Question about changing a hybrid
  105. High-end Class A valve amplifiers will be illegal in USA?
  106. transformerless supply
  107. "Quasi" ultralinear experiment - questions...
  108. Help on a LUXMAN MQ 3600
  109. Changing from 6X4 to EZ81
  110. Design questions, driver stage for SE.
  111. S5 K-12G Question
  112. Ideas for a tube that heavily distorts ?
  113. CCS current sink in the output of my 2 tube 6080 amp.
  114. What do you think about my design (based on IMPAMP)
  115. spearinol oil (in ASC caps)
  116. Larger chassis Hole Punches
  117. HV Diode Selection
  118. Need help form Germany
  119. Output Impedance
  120. How to connect Gridchoke?
  121. Microphone In Guitar amp Question
  122. Triode connecting a pentode?
  123. help on line pre-amp
  124. Edcor P-P Transformers
  125. chassis work in NYC area
  126. low THD guitar preamp
  127. Please help ID this rectifier:
  128. Power Supply Voltage For 5881/6L6 Amp
  129. Audio Electronic Supply AE-25DJH
  130. Trouble: Main transfo short?
  131. help with chassis layout
  132. "Preamp" with remote (long)
  133. 6BY5 High Voltage & High Current Choke Input Design P.S.
  134. x-10 d and x-can version 2/3 schematics
  135. Ugly, but versatile, new amp
  136. Capacitor advice needed for AVA PAS rebuild
  137. Mic pre transformers
  138. Gain of JE labs 300B?
  139. Troubleshooting.
  140. new to the forum pre-amp
  141. Preamp output delay
  142. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  143. 1st project hum or buzz
  144. Impedans of trafo for EL504 inSE
  145. Can I use 2C39-B to sound
  146. usage of line out trans.
  147. eagle with tubes ?
  148. Rlim in GZ33 datasheet?
  149. LT1085 Current Regulation for DHT filaments
  150. Help Fixing Bias
  151. MC phono amp
  152. 10M45 Mu-Stage Idea?
  153. Hickok 6000A with 6C33 & 13E1...
  154. Isco 494
  155. looking for spice model of 6HA5 or similar tubes
  156. 6SL7 to 6SN7 substitution in power amp?
  157. Adding Subwoofer output to Aikido preamp circuit
  158. A request for PP 6c33c Schematics
  159. Thumping from left speaker when volume is low
  160. Crosstalk in twintriodes?
  161. Example Schematics?
  162. how to choose a rectifier tube? (specifically octals)
  163. Rather odd valve socket - anyone have any ideas?
  164. PS for GG - look for better channel separation
  165. help! T16 OTL schematic
  166. Bench PSU for tubes
  167. Tube Bogen J330 PA amp
  168. FM Stereo Tuner Tube Schematic ?
  169. Conn organ conversion to amp
  170. Smoking Transformer
  171. Questions on 1:1:1 driver transformer
  172. Pentode vrs Mosfet “MU-Stage”
  173. Transformer center tap connections
  174. dumb question :P KT88...
  175. Tube rectifier & regulator (modified)
  176. Some advice on this power supply
  177. Looking for Amperex C11550/1 data.
  178. Inserting tubes into Express PCB
  179. What do you think of this? (211 A2 SE)
  180. Help w/ diyAudio CCS implementation
  181. First DIY Amp Project
  182. HELP with PHONO and MIC preamps.
  183. CLC vs LCLC: is there any advantages other...
  184. Problem with old Heathkit
  185. Does anyone interested tube rectifier & regulator PCB ?
  186. Velleman K4040 conversion from EL34's to KT88's
  187. finished my PCC88 preamp
  188. Max 300B SE output possible with James 6123HS ?
  189. Who's right re bias adjustment versus plate voltage
  190. voltage current regulator
  191. Yarland 34 ciii amp
  192. CCS/5842/300B ground schematic.
  193. tube sockets
  194. PX25
  195. Research on tubes and circuits simple circuits
  196. using only 1/2 of a dual triode
  197. Some HMMM on my SRPP
  198. Grid Stopper
  199. diy tube amp problem
  200. The Red Light District - another PP EL84 amp
  201. Balanced 300B output for headphones or loudspeakers?
  202. 5692, the best?
  203. Power transformer quality differences
  204. Is it possible to use regulated DC for a rectifier tube?
  205. Transformer Secondary Power
  206. Phono preamp
  207. VR Tubes as Cathode Bias of 2A3 SRPP Loftin-White
  208. Physically small rectifier tube with 5V heaters
  209. Distorting 5687 preamp circuit
  210. Looking for a good 300B datasheet
  211. CCS is your friend!
  212. Valve Pre Amp & Class D Power Amp
  213. heater supply questions
  214. sub-mini valve
  215. Amp kit recommendations
  216. First amp for a new in valves
  217. Loud buzz and hum from one monoblock!!!
  218. Stueyh
  219. Big *** '50s Power Supply, now what? 300B SET ideas...
  220. Phono Preamp Design Needed
  221. antique fender bassman 50 retubed HELP
  222. Severe oscillation in 6L6 amp
  223. How to tweak warmth to a power amp?
  224. Can anyone explain me this Loftin White amp?
  225. Substituting dual triodes
  226. ValveWave-1 My first Tube Project
  227. changing output capacitor value? what should I consider?
  228. motor run caps in the output? good or bad idea?
  229. resistors across the heater voltage then the middle is grounded
  230. Switched Pot Source Needed
  231. transcendar transformer
  232. Installing tubes upside-down? Bad? Maybe it doesn't matter?
  233. Voltage Multipliers
  234. I want to build an AM Tube Tuner
  235. Tube Amp CCS?
  236. S-5 Electronics Tube Amp Kit
  237. Tube amps from eBay (China)
  238. filament supply: batteries v TentLabs?
  239. replace a 5651 tube with a zener?
  240. tube design books
  241. Bogen chb100 input conversion suggestions
  242. MesaBoogie 400+ clone
  243. EL34 in place of a 6AS7G (used in the supply circuit as a pass tube). how?
  244. R-core xformers from China
  245. Counterpoint Service manual wanted
  246. Two chokes in one pot?
  247. help with a transformer
  248. 311T (211 alike) HIGH power triode
  249. Re-attaching anode cap to 805 or 811A tube
  250. "Fisher Doctor"

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