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  1. parallel CRC Filtering for B+
  2. 6v6. 6lg Gain Max Voltage
  3. More buffer questions
  4. Benchtop PS
  5. Chassis labels
  6. LM317 Regulator Problem
  7. Can I afford my SE amp ??
  8. 12B4 versus 6S4 for linestage
  9. Function Generator Probe?
  10. Otl Set?
  11. Tektronix TDS2000 series is a noisy scope
  12. vanderveen's 30W PP amp..
  13. Roberts/Akai M series amp problems
  14. What speaker to use with my tube clone
  15. What’s the best tube amplifier you can build?
  16. Cathode Follower Buffer Input Impedance
  17. EL84 as Preamp and as Crossover
  18. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  19. EL 84 Single Ended Integrated
  20. "2 Stage" PP 7591 Amp
  21. Jolida 1301a with Mission M71 speakers?
  22. EL34 SE in 430V?
  23. EL 84 PPP/PP Class A Triode schematic
  24. Almarro A318A
  25. beckman berkley model 7360
  26. spice model for UL output transformer?
  27. Need help with my new amp
  28. E88CC Mullard fake
  29. Anyone try sharp cutoff pentodes in a p-p output stage?
  30. 845 A2 Monoblock Project
  31. newb needs help on simple el84 amp PS
  32. Newbie's power supply woes
  33. Question about M7 Preamp
  34. Which amp to DIY as a first project?
  35. help for psu
  36. tube amp
  37. Will a 6BH6 work in an Aikido?
  38. Tubes and maximum ratings
  39. FireFly Amp Question
  40. help needed 1st tube diy
  41. Help for newbie building Toccata preamp
  42. Hybrid amp -> tube for VAS stage
  43. I recently inherited a Heathkit HO-10 monitor o-scope...
  44. Aikido tube choice
  45. Biasing pre-amp problem
  46. Help with identifying tube
  47. Off Topic Holiday Cheer
  48. Prototype preamp example
  49. PV10AL Transformer burned, help!
  50. EL34 Pentode in Push-Pull!
  51. Mcintosh MX110 repair
  52. Mains Transformer Question
  53. Loaded Question
  54. A BIG SCRATCH in my speakers? Help me please.
  55. New Production Tung Sol 6550 Tubes - Opinions
  56. Looking to build a tube integrated
  57. Which high power CCS for output stage?
  58. Using a mosfet to drop B+?
  59. drawings vs. schematics
  60. New TEK Scopes
  61. Transfos Anyone?
  62. Ripple guidelines for power supplies
  63. Mains transformer orientation
  64. AMD tube integrated tube amp
  65. Using Choke in LCRC filter in power supply
  66. Need good current sink JFET or MOSFET?
  67. Setting Up a Circuit for Testing
  68. 6H6 question
  69. Kennedy Tube Audio Website Hijacked
  70. Yet another 12B4 line stage, or is the 12B4 better than the Grounded Grid.....
  71. transformer for Philips AG9015
  72. Real McTube Help
  73. Where are the 307A / VT225 amps?
  74. Anyone have a single el84 PPP OPT?
  75. Using an old power transformer as a choke?
  76. Convergent Audio Technology SL-1 Scematics
  77. Poinz 6AQ5 Linestage
  78. microphone preamp
  79. Ticking noise, need help.
  80. Humm in my preamp...
  81. Enclosure suggestion/questions
  82. Calculating Tube Parameters +SPICE
  83. Loudspeaker for TUBE DIYer
  84. Tube ID 18R-AL1?
  85. 6l6gc Tube Drive
  86. Need a little help, TT and PC? Amp Kit?
  87. 12ax7 preamp
  88. 308/ecll800 Lorenz
  89. How did you do your Aikido?
  90. Thoughts on this 807 design
  91. Rectifier compatibilty
  92. Tube amp for biamped speaker
  93. 12ae6, 12fk6, 12fm6 diode specs
  94. Any software out there for taking the headache out of composite loadlines?
  95. Driving a single 6L6GC with 12AX7
  96. quick 50c5 to play around with
  97. A question about distortion in SE vs. PP designs:
  98. Need help on first tube amp rebuild -trans problems
  99. HAMMOND 125ESE Transformer WIRING
  100. preamp ps problem
  101. What does everybody really NEED???
  102. Marantz 7C still good today?
  103. Magnavox Chassis #196-55 Resistor Question
  104. 6BL7
  105. altec/peerless mystery amp
  106. 6gk8 triode pentode tube data
  107. Low Current Source
  108. Parallel Single-Ended Questions
  109. Tube power ratings
  110. 6DJ8 or 12xx7 for hybrid amp (Monarchy)
  111. What did I do wrong with LEGACY????
  112. seeking: tube for a SEP parallel feed like an EL84, but with a lower Ra
  113. Tube Tracer
  114. a question of tube behaviour
  115. Which tube? ECC82, 6SN7 or 6SL7
  116. oscillator
  117. The Covi Mark II Circlotron Amp
  118. HT transformers and polarity
  119. Hammond 156C - good Plate choke load??
  120. DIY pre-amp kit vote
  121. 6550 tubes
  122. Is the 6N6P a direct substitute for the 5687?
  123. SE amp using 1619 instead of 45 triode
  124. Akai M-7 Amp Schematics?
  125. asl 845 monos mods
  126. 3 stages... Two Power Supplies
  127. RCA 7094 tetrodes...
  128. KT88 push pull
  129. Tube amp fan?
  130. Ping gerd.....
  131. Need help finding Sovtel EL84M tubes
  132. Min. current draw for choke input?
  133. Passive RIAA with tubes
  134. Oscillation Mystery
  135. unison research P30K schem?
  136. Can I use a 5R4 GY in place of a 5AR4?
  137. Seeking for all Norman H. Crowhurst papers
  138. best way to elevate heater?
  139. Tube Load Line
  140. Homemade Vacuum Tube
  141. beardm70mk2-want less b+
  142. Need help with tube test data - fast
  143. Show me a schema 6Pi3C-E Push-pull
  144. Help about the 6SN7/5692 linestage
  145. Active load output stage
  146. Power supply question
  147. EL34 Triode Mode - G3 where?
  148. Screen grid driver for PL519?
  149. Best replacment for a 6F2
  150. Please Tell Me How To Modify And Upgrade My Music Angle 845 Amplifier?
  151. Pentode to Triode trick.
  152. 6550 making a Popping sound?
  153. Pie-eyed and puzzled...
  154. How about this schematic
  155. tube disorder
  156. PC choke in a preamp ?
  157. selective tone control
  158. time for a laugh
  159. Another New Build Pictures ( G' Amp )
  160. Help finding: 7-pin PCB socket, 90deg horizontal
  161. LC vs. CLC Theory
  162. Input transformer & volume pot
  163. MC34-B Quit working suddenly (newb)
  164. Golden Tube Audio 300B se
  165. Wanted: Pioneer sa-810 schematic
  166. se el34 finally
  167. Tube design question
  168. Marantz 8 clone build
  169. Active RIAA Eq for tubes- Brian Clark's article
  170. pre hums - even unplugged!
  171. Push Pull Preamplifier anybody?
  172. 6AN8 tube question
  173. Distortion in Fisher 800C
  174. 20% versus 43% screen tap
  175. Van der Veen transformers
  176. Want to upgrade Velleman K8020
  177. KT88 Power supply question
  178. TX coupled, pentode linestage
  179. phase splitter question
  180. New preamp project is online
  181. Newbie: Which amps to build?
  182. Which valve, 5842 (417A) or 6H30
  183. How do you punch out your chassis holes?
  184. paralelled tube
  185. ECC88 at 12 volts
  186. azarus preamplifier schematics
  187. Which valve amp do I keep?
  188. Favorite Driver for 845
  189. Somebody has that magazine?
  190. modify parallel push-pull EL84 to single push-pull
  191. How long it will last?
  192. Hurricane Wilma
  193. Suddenly, no output from Copland CTA-501
  194. 807 Audio Amp Progress Report
  195. Choke induced Hum
  196. Wim's DC EL84 amp
  197. Drivers for a KT88 pair
  198. what do u think of these tubes?
  199. 12BH7 spice 3f4 model
  200. Clone Marantz M7 Line Amp
  201. 6HF5 sweep tube single ended amp
  202. My first DIY
  203. Winding A Interstage Transformer
  204. help building 12ax7/el84 amp
  205. PSE schematic
  206. Using PSU Designer to calculate DC filament supply
  207. Dynaco stereo 70 driver board
  208. Excellent and cheap DIY INTERSTAGE!
  209. Need Advice with Timer Relay Shut Off
  210. standby switch
  211. Purpose of small cap across PSU rails?
  212. 6SL7 + EL34 SE Audio Amp
  213. 6C33 fixed/auto bias ?
  214. Long Tail and Local feedback
  215. I look for EAR 859 pictures.
  216. Designing a simple tube opamp?
  217. Difference between Hammond 200 and 300 series
  218. Ultrapath Cap
  219. where to find 600v 18awg wire??
  220. Suggested power supply B+?
  221. Variable Impedence Mic Preamp
  222. Help me stop my preamp from farting!
  223. The Valhalla power amplifier project
  224. help! EL84's dying
  225. Could check this pentode-mu stage thingy for me (disclaimer* it is for a gutar amp)
  226. ASC Polypropylene And Oil Capacitors
  227. pots... log or linear?
  228. Cracking sound through speakers.
  229. EL84-PP - Why just 5W?
  230. Brook12a schematics...
  231. LongTailedPair gain -> how to calculate?
  232. Wiring secondaries of two power trafo's in parallel?
  233. RIAA "Tube Simulations"
  234. Has anyone built this 'Svetlana Six Pack' ?
  235. updated pics of tube project
  236. help 12FV7 datasheet
  237. Why does my oversized preamp trafo gets much too hot?!?!?
  238. 6sn7 pre
  239. 12AY7/6SN7 preamp PSU check
  240. CT design trans application
  241. Shindo schematics?
  242. Octal Hagerman Cornet Experiences
  243. Zenith AM/FM C835 tube Radio schematic
  244. Oh man, my telefunken stoops...
  245. 42 single ended
  246. EL34 Feedback circuit
  247. Spice model for EL86/6CW5
  248. Ditching some High Voltage
  249. Newbie want to build simple tube preamp&psu!need help!
  250. Phono Pre-Design Input

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