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  1. 7984
  2. Screen driven EL36 / 6CM5 /PL36 /25E5
  3. Clone Marantz 7C power supply
  4. On - board supply ?
  5. Name that EL34!
  6. How much plate voltage for 6N1P's?
  7. minimalist valve pre for follower
  8. Tube availability: what would you do?
  9. Looking for EL32 schematic
  10. oil bath cooling for tubes?
  11. Aikido Crackle Hiss Noise Solved
  12. Mini-p1 tweaks
  13. Refried Power Supply?
  14. The Edcor meets the 6AV5
  15. Anyone have curves for a 5HC7?
  16. Any common cathode (grounded grid) schematics?
  17. SIMPLE tube amplifier for...dummy guy...
  18. ground and earth
  19. Tube Cad Journal dead
  20. First amp
  21. 6922 direct coupled to 2A3
  22. Ok guys, get your daggers out.......
  23. How would you build a hybrid LM3xxx amp?
  24. Tade no tube amp!
  25. Sherwood 5500
  26. Most accurate way of matching triodes ?
  27. Help Identify This AMP!
  28. Old Tube Equipment Turnon
  29. Current Sourced Cathode Follower
  30. noob pre/pwer amp recording ?s
  31. Anyone heard of "in-rush" limiter resistor
  32. Will adding a 10H/125mA choke hurt bass performance
  33. Fixed bias vs. auto bias
  34. Not your average output transformer problem
  35. Balanced Audio Technology VK 3i preamplifier
  36. Musical Fidelity X10-D - changing tubes problem
  37. power transformers in series
  38. Loud sudden rumbling when turn on amp
  39. Help with tube amplification?
  40. UTC CG-431 Terminal Arrangement
  41. Mingda MC34B tweaks
  42. Symphonic Line Die Erleuchtung Reference
  43. 6SL7 Diffamp front end
  44. PT/OPT Orientation questions
  45. Effect of using 50k pot instead of 100k pot in tube preamp?
  46. Using the Crowhurst articles and Claus Byrith
  47. 12SX7
  48. Bridge SE amplifier
  49. Cad Sw
  50. Kit amps in the UK
  51. ECC82 based preamp
  52. How important is the coupling cap?
  53. pentode driven 300b set amp - any info?
  54. Circlotron Preamp with ECC88.
  55. Removing tone controls - Need a little help
  56. SE EL84 amplifier schematics
  57. Output coupling - Choke-coil method?
  58. 7788 tube mic preamp design
  59. Amperex 6085 Tube- Where to Buy?
  60. Can a 5687 drive four 813's in triode mode ?
  61. Schematics needed for Heathkit S33
  62. Tube Sparking
  63. Vacuum Tube Pre O.C.L.
  64. Why no single triode OTL power stages?
  65. 6922 .2 sections in parallel
  66. Pre-amp input remote control
  67. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  68. Relpacing 6EU7s with 12AX7s - Good idea?
  69. These Valves good for anything?
  70. buzz problem
  71. Help with trafo
  72. Svetlana EL509 III tubes
  73. Noise on Aikido output
  74. Book “Single Ended Amplifiers” by John (not Gordon) Rankin
  75. EV4417 6CM5 (6x) P-P Amp Schematic
  76. Need recommendation for cathode bypass cap
  77. Simplest flea-powered amp?
  78. Decisions, Decisions - Help me select iron
  79. 966 mercury vapor rectifier
  80. Sound Practices CDs
  81. Question about DIY EL34PP amp
  82. noisy noisy noisy noisy noisy tube
  83. Help needed lowering B+ for DIY amp
  84. 6SN7 CCS
  85. Russian 6L6 family sketchy?
  86. HT regulator using 78xx
  87. Audio Research CA50
  88. Granite tiles
  89. SE Triode amp for a newbie
  90. tube is flashing and glowing very bright!
  91. Suggestions for another amplifier project.
  92. almost just another newbie thread...
  93. ts9 pt9 triode
  94. help Etude 124BA keep blowing fuse.
  95. Metal 6L6s?
  96. Hybrid amplifier help...
  97. Tube input and mosfet output
  98. musical fidelity f22 schematic wanted
  99. An intriguing 300B SE-direct-coupled-amplifier
  100. Output capacitor
  101. Cascoded Long Tail Pair Inferno!
  102. Tube ornamental rim
  103. What should be mod first in my amp
  104. EL504/PL504 spice model
  105. Long Tail Pair Phase Inverter with Penthode ?
  106. new spice models available
  107. Output Capacitor Value
  108. Popular tube websites notifier
  109. Convergent Preamplifier Schematich
  110. Source of tubes & associated stuff in Sydney?
  111. Projects involving EF50 tubes?
  112. Kt77?
  113. Best way to translate schematic into actual layout?
  114. Clean to breakup range
  115. 26 preamp problem
  116. mono tube microphone preamp
  117. Help designing a tube amp...
  118. MJE350 pinout and ccs issue
  119. KGB- DC Coupled Hybrid Balance OTL/OCL HeadAmp
  120. negative voltage doubler for ccs
  121. Loftin-White
  122. SET amp from 1619 driving a 809. Opinion wanted.
  123. Re:preamp sputtering noise
  124. Building an ECL82 Single Ended Amp ...
  125. help a newbie build his first tube project
  126. Mercury Vapour rectifiers
  127. El Cheapo Circlotron PSU question....
  128. lookin for a tube buffer
  129. Baby SET w/6FD7 and ilk, for Bas and others....
  130. py500A question
  131. Mundorf Silver-oil VS Jensen copper foil
  132. Drawing Schematics for Tubes
  133. Drive Current for EL509 Enhanced Triode
  134. How to use Svetlana 6d22s?
  135. James Singapore
  136. Aikido using a #26 tube?
  137. Tube and DIY Newbie Kel84 vs Stoetkit Jr.2
  138. ZOTL and ferrites
  139. 6V6 vs EL84 SE UL
  140. Component selection
  141. Snap sound on preamp powerup
  142. Secondary voltage for heaters
  143. good schematic archive site
  144. Transitional SIlvertoneAmp between 1472 and 1482?
  145. Cheap Source for Hammond 125ESE
  146. PCF801 - pentode section has remote or sharp cut-off?
  147. Tube as a desk lamp
  148. Ella EL34 Bias Help
  149. tube diy can or can t
  150. Quad II Problems
  151. Choke input P/supply and critical damping
  152. balanced grounded grid preamp
  153. Fluorescent ballasts in SE
  154. Hammond Transformers and EZ80/EZ81
  155. Look what I found this weekend!
  156. Question on 300B tubes from Parts Connexion
  157. Russian Tubes
  158. Help a first timer to select...
  159. GE 5692 BLACK base?
  160. sources on the web for chinese amps
  161. How much capacitance in a power supply
  162. Parallel 12AT7 for 2A3 driver?
  163. Maida's regulator
  164. Common Mode Chokes for Heater Supplies
  165. Ming Da MC34B....passive or active pre amp?
  166. tube power supply upgrade... elna's, RTX, infinicap
  167. What tube do you think this OPT matches?
  168. safety fuse
  169. Short and sweet review of Sun Audio SV-300BE
  170. Help selecting a DIY schematic
  171. OP Transformer power rating guesstimate
  172. need a lot help on an el34 project :P
  173. Anode Follower
  174. CCS for tubes/valves: PCBs
  175. Improvement to DM's Generic Triode Model for 12AU7
  176. ccs, direct coupling and stuff
  177. Replica Pre QUAD 22 - Questions on mids
  178. Is this cap ok for audio?
  179. Remote Controlled Stepped Attenuator
  180. UltraLinear in toroidal parafeed, my findings.
  181. Help to tame a 12AX7/6AQ5 circuit
  182. DIY something like iMPAMP??
  183. Have you seen this tester?
  184. Help with taming a 12AX7 and 6AQ5a amp
  185. Linear Technology 1083CP adjusting problem
  186. radiation tubes
  187. 813 socket dimensions
  188. Cheap SE output transformers
  189. BIAS and B+ caps WKZ or NH
  190. Cleaning tubes...
  191. Manfred Huber
  192. IEC standards, anywhere?
  193. possible volume and balance control - does this look like it will work well?
  194. EL84 Amp - Baby Huey
  195. 6X4
  196. What do you guys use for HV toggles?
  197. Balanced Operation Output Transformer Questions from N00b
  198. Static stain cleaning
  199. 12AX7 preamp project
  200. SE 1.5W OTL
  201. Cross-coupled NFB for PP Pentode
  202. Parallel triodes - CONS?
  203. output transformer spec questions
  204. Choosing Valve
  205. opinions wanted - Lafayette Stereo 224 Tube Amp
  206. New KT77 Tubes by JJ
  207. 60HL5?
  208. Standby switch
  209. Problems With Simple Gounded Cathode Gain Stage
  210. srpp 6c33c
  211. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  212. Anyone in gta know their tubes?
  213. 801 low power SE amp
  214. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  215. OPT resistance for EL84 PP Class A
  216. What’s in this amplifier?
  217. Whose logo?
  218. pentode phase splitter
  219. Is this EL84M UL PP OK?
  220. Tube preamp question...also, chassis layout
  221. Quad II Mods/Tweeks
  222. Trying to recreate a Fisher SA-16
  223. CCS, how it actually works?
  224. 400V CRC PS, what do I do with it?
  225. Does anyone has Milbert BAM230 tube car power amplifier
  226. Valve sockets
  227. Can I use 12AT7?
  228. Music Reference RM5 mkIII
  229. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  230. Looking for a link on power supply design
  231. Is feedback required for UL EL84PP?
  232. Someone working on an insane tube project?
  233. Load line frustration
  234. Is 12B4/A good for differential pair?
  235. Heretical Unity Gain line stage PLUS a little gain ?
  236. tube vibration
  237. Small temp voltage on phono input-problem?
  238. What's it all about?
  239. IXYS GaAs Schottky Diodes.
  240. Maplin 4-20
  241. Line preamp using 2 ECC88 per channel
  242. What to use as a nice amp case?
  243. Signal Tube Longevity ?!?
  244. HK 250 power amp tube amp schematic
  245. Need help with connecting OPT.
  246. 6SL7 driving SE EL34 ?
  247. power supply tranny
  248. Output Transformer Background
  249. Schematic
  250. £¸£´£µ no dc passing the opt

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