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  1. HELP! Cathode bypass caps keep going...
  2. Best Operating point for a 2A3?
  3. Need help with preamp
  4. Best place to buy valves and components?
  5. Replacing cathode resistors of Aikido 1st stage (or other SRPP circuit) with chokes
  6. Circuit calculations
  7. Finally going to give my TVC/active preamp a real home...
  8. Suggestion on the input transformer for tube preamp
  9. sylvania & GE tubes
  10. SE Amplifier
  11. "fisss" on the 6C33C-pp
  12. Best price for tube output and power transformers ?
  13. What kind of output transformer?
  14. transformer
  15. 20W PP Choke PSU Question
  16. Regulated B+ supplies (using tubes)
  17. Confused by the numbers
  18. Feedback on Thorsten's legacy "universal dht" amp
  19. Are there techniques for triode-strapping on the fly?
  20. The best bias point for KT88
  21. All tube CCS
  22. GU50 SE Amplifier class A , with 6SN7 Full construction details
  23. 50L6GT & 6L6GT sounds ??
  24. Especially for Tubelab: 845 amp 2.0
  25. Powerdrive
  26. Filament voltage and affect on Rp
  27. Tube pre-amplifier PSU
  28. Help with a cathode coupled pentode driver?
  29. Amp that has the biggest number of irons
  30. 12AX7A replacement
  31. Bogen CHB-10A Conversion, need help and advice
  32. Who said it was a good idea to try pentode!
  33. Input level
  34. 6V6GT
  35. 6AR6
  36. Any TCJ Push-Pull Calculator users?
  37. 211 Push pull operation points
  38. Edcor CXSE25-8-4K vs Hammond 1628SEA?
  39. 50W KT88 PP w/ NFB on Bonavolta
  40. Looking for nuvistor pre-amp preamp schematic please. 6CW4?
  41. BELL 3030 Amplifier
  42. Diy Paradise!
  43. Another PP 6B4G
  44. How to get a buffer with overdrive from a 12AX7 ?
  45. Pulsating Glow
  46. Question on using glow tubes (v-regs)
  47. Eliminating the OPT: impedance matching
  48. KT88 and push-pull ultra-linear
  49. Positronic Tubes
  50. Paint steel chassis with the "aluminum paint" used on wire fence?
  51. Best bias for 6cg7
  52. Coupling caps test bed
  53. 829B Based Amp
  54. slight hum still haunting me
  55. CCS bias question
  56. Can't get solder to stick
  57. EL84 amp plus subwoofers? STUPID? OR NOT?
  58. Johan Potgieter
  59. parallel sections
  60. PL504/EL84 SE vs parafeed
  61. [help] Look for McIntosh MI-200 Circuit diagram
  62. My experience: the cheap punch set VS Greenlee punch
  63. 6V6GT SE schematic -need!!!
  64. What's the deal with Broskie's iPod buddy?
  65. a quiz about AC power
  66. Beard P100 Amplifier
  67. Quick identification question
  68. Some more RIAA questions
  69. what to do?
  70. A suspect EL34
  71. Best way of reducing heater voltage?
  72. Musical Instrument tube amp part suppliers
  73. tubelab
  74. My first power amp
  75. El34 SE pentode
  76. All Electron Tubes Manufacturers
  77. Mu stage driver
  78. two questions on Parafeed amplifier
  79. 6AU5GT
  80. Connection advice
  81. 'Tube'-ing a reel-to-reel player.
  82. EL34 make up by PCB
  83. wanted RIAA schematic
  84. What is the best software to create tube schematic
  85. Soft clipping acceptable?
  86. help for this amp
  87. Pentode PP amp for comments, please
  88. 966A rectifier
  89. 938 power triode
  90. PL36 PP Amplifier 22W Full construction details
  91. Quick question about the output of my amp
  92. Sansui Transformers from Tokyo Electronic Industrial Co. LTD.
  93. An "All American" tube Project
  94. Aikido and output transformer
  95. Why are Hammond SE OPTs dissed? Heavier than the competition...
  96. Driver stage headroom
  97. Help me before I deal hot electric death to myself (PS question)
  98. AVO CT-160
  99. Two cathode resistor bypass questions
  100. What do you guys think?
  101. Antique Sound Lab Aq1003
  102. Audiomaster integrated (Valve) amp
  103. PP Amp using 811A
  104. Replacing ECC83 in Leak Stereo50 with ECC808
  105. 6N30/6H30 Datasheet
  106. Equivalents to 6888
  107. Input voltage
  108. Converting from integrated to pure amp
  109. Final schematic, I think?
  110. Toroidal core saturation
  111. Mystery SE OPT
  112. Is this a Spud Amp ?
  113. input cap V rating
  114. 6922 Heater - BIAS
  115. JJ 2A3-40 Watt?
  116. 12AU7 testing result: Are these tubes still good?
  117. "OTK" stamp on russian devices
  118. Where did nj7p.org go ?
  119. New to forum! Or: A few newbie questions
  120. Powersuply Le Bong?
  121. Fixed Bias: the ups and downs
  122. Bias Adjustment Question
  123. Multiple secondaries hook-up!!!
  124. Plate voltage related to sound?
  125. Array speakers & OTL
  126. First Post - Hum on 5687 Pre-amp
  127. DC powered amps
  128. Evaluating Unknown Power Transformers
  129. 0v grid bias with UL connection?
  130. LV Filament supply quandry
  131. which tube using NonDirect heat with best-class sound ?
  132. Surround Decoder - Subtract amplifier
  133. New To Forum - First Post
  134. Try to understand
  135. tube site
  136. OTL with 6S19P?
  137. What should B+ on 300B push-pull be?
  138. Regulated PSU with EL84
  139. How do I design minimum current for 35W PP AMP
  140. Buying bits'n'bobs...
  141. Can't make this address work.....
  142. schematics for 6C33 single ended OTL?
  143. valve preamp
  144. trio W-38 problems
  145. Cheap Russian 2.2uF 400V PIO Capacitor
  146. Otl Se
  147. My 2A3 is being left behind
  148. Wal-Mart power supplies
  149. Nice deal!
  150. Look for high-voltage regulator projects
  151. Typical plate Voltage for el34
  152. Arc Sp8
  153. New Phono amp - developing stage
  154. CCS Bang for the buck output or driver?
  155. pentode driver sanity check - before i build
  156. 6av6 mini pre didn t work
  157. CCS in the output stage
  158. Looking for Schematic using KC3 Preamp ?
  159. If you are looking to try balanced AC power....
  160. The best Coupling cap (under $20)
  161. What makes a speaker "tube-friendly"?
  162. Using 6L6 for 300b driver
  163. Heater reference
  164. 6G15 output transformer selection
  165. Morgan Jones and cascodes
  166. 6A3/6B4G/6S4S(2A3/2S4S) project
  167. Question about changing a hybrid
  168. High-end Class A valve amplifiers will be illegal in USA?
  169. transformerless supply
  170. "Quasi" ultralinear experiment - questions...
  171. Help on a LUXMAN MQ 3600
  172. Changing from 6X4 to EZ81
  173. Design questions, driver stage for SE.
  174. S5 K-12G Question
  175. Ideas for a tube that heavily distorts ?
  176. CCS current sink in the output of my 2 tube 6080 amp.
  177. What do you think about my design (based on IMPAMP)
  178. spearinol oil (in ASC caps)
  179. Larger chassis Hole Punches
  180. HV Diode Selection
  181. Need help form Germany
  182. Output Impedance
  183. How to connect Gridchoke?
  184. Triode connecting a pentode?
  185. help on line pre-amp
  186. Edcor P-P Transformers
  187. chassis work in NYC area
  188. Please help ID this rectifier:
  189. Power Supply Voltage For 5881/6L6 Amp
  190. Audio Electronic Supply AE-25DJH
  191. Trouble: Main transfo short?
  192. help with chassis layout
  193. "Preamp" with remote (long)
  194. 6BY5 High Voltage & High Current Choke Input Design P.S.
  195. x-10 d and x-can version 2/3 schematics
  196. Ugly, but versatile, new amp
  197. Capacitor advice needed for AVA PAS rebuild
  198. Mic pre transformers
  199. Gain of JE labs 300B?
  200. Troubleshooting.
  201. new to the forum pre-amp
  202. Preamp output delay
  203. Super Triode Connection Amplifier Build with 6BM8 and 6AK5
  204. 1st project hum or buzz
  205. Impedans of trafo for EL504 inSE
  206. Can I use 2C39-B to sound
  207. usage of line out trans.
  208. eagle with tubes ?
  209. Rlim in GZ33 datasheet?
  210. LT1085 Current Regulation for DHT filaments
  211. Help Fixing Bias
  212. MC phono amp
  213. 10M45 Mu-Stage Idea?
  214. Hickok 6000A with 6C33 & 13E1...
  215. Isco 494
  216. looking for spice model of 6HA5 or similar tubes
  217. 6SL7 to 6SN7 substitution in power amp?
  218. Adding Subwoofer output to Aikido preamp circuit
  219. A request for PP 6c33c Schematics
  220. Thumping from left speaker when volume is low
  221. Crosstalk in twintriodes?
  222. Example Schematics?
  223. how to choose a rectifier tube? (specifically octals)
  224. Rather odd valve socket - anyone have any ideas?
  225. PS for GG - look for better channel separation
  226. help! T16 OTL schematic
  227. Bench PSU for tubes
  228. FM Stereo Tuner Tube Schematic ?
  229. Conn organ conversion to amp
  230. Smoking Transformer
  231. Questions on 1:1:1 driver transformer
  232. Pentode vrs Mosfet “MU-Stage”
  233. Transformer center tap connections
  234. dumb question :P KT88...
  235. Tube rectifier & regulator (modified)
  236. Some advice on this power supply
  237. Looking for Amperex C11550/1 data.
  238. Inserting tubes into Express PCB
  239. What do you think of this? (211 A2 SE)
  240. Help w/ diyAudio CCS implementation
  241. First DIY Amp Project
  242. HELP with PHONO and MIC preamps.
  243. CLC vs LCLC: is there any advantages other...
  244. Problem with old Heathkit
  245. Does anyone interested tube rectifier & regulator PCB ?
  246. Velleman K4040 conversion from EL34's to KT88's
  247. finished my PCC88 preamp
  248. Max 300B SE output possible with James 6123HS ?
  249. Who's right re bias adjustment versus plate voltage
  250. voltage current regulator

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