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  1. quad esl output transformer.
  2. penta labs?
  3. transformer links
  4. EL84 auto split
  5. TOPWARD MODEL 605 operation manual & Schematic
  6. PREdator, Diff/CF linestage.
  7. Triode Electronics ??
  8. Full Bridge Amp?
  9. Tube literature on pentodes + transformers
  10. so, who made General Motor's "AUTRONIC EYE" tubes?
  11. 6DJ8 Linestage
  12. Annyone seen this problem?
  13. psu to heater on 4 el34 tubes???
  14. 6C33C-B, Reliability--A theory........
  15. Sun Audio preamps
  16. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  17. Carver Phono
  18. Help With 3 Channel Magnavox
  19. simulation software
  20. trickle charge psu?
  21. tube filter
  22. Holiday S-5 K-12G
  23. Couple of (newbie) tube questions...
  24. valve buffer gainclone
  25. Series wiring for heaters
  26. DIY tube cd player ?
  27. Tubes in mp3 players?
  28. Output Impedance?
  29. Hum Pot Question
  30. Which 6AQ5
  31. White flakes in rectifier tube??
  32. Bogen V20 PA Amp Schematic or ?
  33. 12a?7 in Eico HF-12
  34. Home Made Tubes?? has anyone made one, is it possible??
  35. replace 6N1P with 7308
  36. Plate choke on a line stage?
  37. Looking for datasheet
  38. 811A SET Monoblock physical layout suggestions
  39. Automated bias
  40. OTL or parafeed?
  41. Reversing mains toroids for HT
  42. 5881/6L6WGC and 12AT7WA replacement
  43. Direction for Mounting Transformers
  44. Ecf80
  45. feedback phasing
  46. Cryotubes? Cryogenically Frozen valves
  47. European Triode Festival 2005
  48. PSU capacitors
  49. Question on shared rectifier / signal tube filament windings
  50. Heathkit rebuild or...?
  51. Fisher 500B OPT/Feedback Questions
  52. Transformer selection question
  53. Grounded Grid Help
  54. EF86 penthode
  55. Any audio use for ER21A?
  56. Upgrading a sonic frontiers SFS-80
  57. Hum problem
  58. low frequency oscillation in 12B4 linestage
  59. Balanced volume control question
  60. Need Help for Power Supply for gg Preamp
  61. OTL 6c33c Ciufolli v8.2 low voltage rails
  62. Any way to extend OPT low-frequency response?
  63. RCA Phono Stage Redux
  64. About tube codes
  65. More Joules? Tube or Solid State PSU?
  66. EL34 schematic confusion
  67. 2-stage DHT: high-mu vs. interstage stepup
  68. Understanding this power supply
  69. 6V6G recommended schematic
  70. parallel CRC Filtering for B+
  71. 6v6. 6lg Gain Max Voltage
  72. More buffer questions
  73. Benchtop PS
  74. Chassis labels
  75. LM317 Regulator Problem
  76. Can I afford my SE amp ??
  77. 12B4 versus 6S4 for linestage
  78. Function Generator Probe?
  79. Otl Set?
  80. Tektronix TDS2000 series is a noisy scope
  81. vanderveen's 30W PP amp..
  82. Roberts/Akai M series amp problems
  83. What speaker to use with my tube clone
  84. What’s the best tube amplifier you can build?
  85. Cathode Follower Buffer Input Impedance
  86. EL84 as Preamp and as Crossover
  87. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  88. EL 84 Single Ended Integrated
  89. "2 Stage" PP 7591 Amp
  90. Jolida 1301a with Mission M71 speakers?
  91. EL34 SE in 430V?
  92. EL 84 PPP/PP Class A Triode schematic
  93. Almarro A318A
  94. beckman berkley model 7360
  95. spice model for UL output transformer?
  96. Need help with my new amp
  97. E88CC Mullard fake
  98. Anyone try sharp cutoff pentodes in a p-p output stage?
  99. 845 A2 Monoblock Project
  100. newb needs help on simple el84 amp PS
  101. Newbie's power supply woes
  102. Question about M7 Preamp
  103. Which amp to DIY as a first project?
  104. help for psu
  105. tube amp
  106. Will a 6BH6 work in an Aikido?
  107. Tubes and maximum ratings
  108. FireFly Amp Question
  109. help needed 1st tube diy
  110. Help for newbie building Toccata preamp
  111. Hybrid amp -> tube for VAS stage
  112. I recently inherited a Heathkit HO-10 monitor o-scope...
  113. Aikido tube choice
  114. Biasing pre-amp problem
  115. Help with identifying tube
  116. Off Topic Holiday Cheer
  117. Prototype preamp example
  118. PV10AL Transformer burned, help!
  119. EL34 Pentode in Push-Pull!
  120. Mcintosh MX110 repair
  121. Mains Transformer Question
  122. Loaded Question
  123. A BIG SCRATCH in my speakers? Help me please.
  124. New Production Tung Sol 6550 Tubes - Opinions
  125. Looking to build a tube integrated
  126. Which high power CCS for output stage?
  127. Using a mosfet to drop B+?
  128. drawings vs. schematics
  129. New TEK Scopes
  130. Transfos Anyone?
  131. Ripple guidelines for power supplies
  132. Mains transformer orientation
  133. AMD tube integrated tube amp
  134. Using Choke in LCRC filter in power supply
  135. Need good current sink JFET or MOSFET?
  136. Setting Up a Circuit for Testing
  137. 6H6 question
  138. Kennedy Tube Audio Website Hijacked
  139. Yet another 12B4 line stage, or is the 12B4 better than the Grounded Grid.....
  140. transformer for Philips AG9015
  141. Real McTube Help
  142. Where are the 307A / VT225 amps?
  143. Anyone have a single el84 PPP OPT?
  144. Using an old power transformer as a choke?
  145. Convergent Audio Technology SL-1 Scematics
  146. Poinz 6AQ5 Linestage
  147. microphone preamp
  148. Ticking noise, need help.
  149. Humm in my preamp...
  150. Enclosure suggestion/questions
  151. Calculating Tube Parameters +SPICE
  152. Loudspeaker for TUBE DIYer
  153. Tube ID 18R-AL1?
  154. 6l6gc Tube Drive
  155. Need a little help, TT and PC? Amp Kit?
  156. 12ax7 preamp
  157. 308/ecll800 Lorenz
  158. How did you do your Aikido?
  159. Thoughts on this 807 design
  160. Rectifier compatibilty
  161. Tube amp for biamped speaker
  162. 12ae6, 12fk6, 12fm6 diode specs
  163. Any software out there for taking the headache out of composite loadlines?
  164. Driving a single 6L6GC with 12AX7
  165. quick 50c5 to play around with
  166. A question about distortion in SE vs. PP designs:
  167. Need help on first tube amp rebuild -trans problems
  168. HAMMOND 125ESE Transformer WIRING
  169. preamp ps problem
  170. What does everybody really NEED???
  171. Marantz 7C still good today?
  172. Magnavox Chassis #196-55 Resistor Question
  173. 6BL7
  174. altec/peerless mystery amp
  175. 6gk8 triode pentode tube data
  176. Low Current Source
  177. Parallel Single-Ended Questions
  178. Tube power ratings
  179. 6DJ8 or 12xx7 for hybrid amp (Monarchy)
  180. What did I do wrong with LEGACY????
  181. seeking: tube for a SEP parallel feed like an EL84, but with a lower Ra
  182. Tube Tracer
  183. a question of tube behaviour
  184. Which tube? ECC82, 6SN7 or 6SL7
  185. oscillator
  186. The Covi Mark II Circlotron Amp
  187. HT transformers and polarity
  188. Hammond 156C - good Plate choke load??
  189. DIY pre-amp kit vote
  190. 6550 tubes
  191. Is the 6N6P a direct substitute for the 5687?
  192. SE amp using 1619 instead of 45 triode
  193. Akai M-7 Amp Schematics?
  194. asl 845 monos mods
  195. 3 stages... Two Power Supplies
  196. RCA 7094 tetrodes...
  197. KT88 push pull
  198. Tube amp fan?
  199. Ping gerd.....
  200. Need help finding Sovtel EL84M tubes
  201. Min. current draw for choke input?
  202. Passive RIAA with tubes
  203. Oscillation Mystery
  204. unison research P30K schem?
  205. Can I use a 5R4 GY in place of a 5AR4?
  206. Seeking for all Norman H. Crowhurst papers
  207. best way to elevate heater?
  208. Tube Load Line
  209. Homemade Vacuum Tube
  210. beardm70mk2-want less b+
  211. Need help with tube test data - fast
  212. Show me a schema 6Pi3C-E Push-pull
  213. Help about the 6SN7/5692 linestage
  214. Active load output stage
  215. Power supply question
  216. EL34 Triode Mode - G3 where?
  217. Screen grid driver for PL519?
  218. Best replacment for a 6F2
  219. Please Tell Me How To Modify And Upgrade My Music Angle 845 Amplifier?
  220. Pentode to Triode trick.
  221. 6550 making a Popping sound?
  222. Pie-eyed and puzzled...
  223. How about this schematic
  224. tube disorder
  225. PC choke in a preamp ?
  226. selective tone control
  227. time for a laugh
  228. Another New Build Pictures ( G' Amp )
  229. Help finding: 7-pin PCB socket, 90deg horizontal
  230. LC vs. CLC Theory
  231. Input transformer & volume pot
  232. MC34-B Quit working suddenly (newb)
  233. Golden Tube Audio 300B se
  234. Wanted: Pioneer sa-810 schematic
  235. se el34 finally
  236. Tube design question
  237. Marantz 8 clone build
  238. Active RIAA Eq for tubes- Brian Clark's article
  239. pre hums - even unplugged!
  240. Push Pull Preamplifier anybody?
  241. 6AN8 tube question
  242. Distortion in Fisher 800C
  243. 20% versus 43% screen tap
  244. Van der Veen transformers
  245. Want to upgrade Velleman K8020
  246. KT88 Power supply question
  247. TX coupled, pentode linestage
  248. phase splitter question
  249. New preamp project is online
  250. Newbie: Which amps to build?

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