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  1. 6922 direct coupled to 2A3
  2. Ok guys, get your daggers out.......
  3. How would you build a hybrid LM3xxx amp?
  4. Tade no tube amp!
  5. Sherwood 5500
  6. Most accurate way of matching triodes ?
  7. Help Identify This AMP!
  8. Old Tube Equipment Turnon
  9. Current Sourced Cathode Follower
  10. Tube Tester Data
  11. noob pre/pwer amp recording ?s
  12. Anyone heard of "in-rush" limiter resistor
  13. Will adding a 10H/125mA choke hurt bass performance
  14. Fixed bias vs. auto bias
  15. Not your average output transformer problem
  16. Balanced Audio Technology VK 3i preamplifier
  17. Musical Fidelity X10-D - changing tubes problem
  18. power transformers in series
  19. Loud sudden rumbling when turn on amp
  20. Help with tube amplification?
  21. UTC CG-431 Terminal Arrangement
  22. Mingda MC34B tweaks
  23. Symphonic Line Die Erleuchtung Reference
  24. 6SL7 Diffamp front end
  25. PT/OPT Orientation questions
  26. Effect of using 50k pot instead of 100k pot in tube preamp?
  27. Using the Crowhurst articles and Claus Byrith
  28. 12SX7
  29. Bridge SE amplifier
  30. Cad Sw
  31. Kit amps in the UK
  32. ECC82 based preamp
  33. How important is the coupling cap?
  34. pentode driven 300b set amp - any info?
  35. Circlotron Preamp with ECC88.
  36. Removing tone controls - Need a little help
  37. SE EL84 amplifier schematics
  38. Output coupling - Choke-coil method?
  39. 7788 tube mic preamp design
  40. Amperex 6085 Tube- Where to Buy?
  41. Can a 5687 drive four 813's in triode mode ?
  42. Schematics needed for Heathkit S33
  43. Tube Sparking
  44. Vacuum Tube Pre O.C.L.
  45. Why no single triode OTL power stages?
  46. 6922 .2 sections in parallel
  47. Pre-amp input remote control
  48. Any benefit to DC heater on parallel supply rectifier (GZ34)?
  49. Relpacing 6EU7s with 12AX7s - Good idea?
  50. These Valves good for anything?
  51. buzz problem
  52. Help with trafo
  53. Svetlana EL509 III tubes
  54. Noise on Aikido output
  55. Book “Single Ended Amplifiers” by John (not Gordon) Rankin
  56. EV4417 6CM5 (6x) P-P Amp Schematic
  57. Need recommendation for cathode bypass cap
  58. Simplest flea-powered amp?
  59. Decisions, Decisions - Help me select iron
  60. 966 mercury vapor rectifier
  61. Sound Practices CDs
  62. Question about DIY EL34PP amp
  63. noisy noisy noisy noisy noisy tube
  64. Help needed lowering B+ for DIY amp
  65. 6SN7 CCS
  66. Russian 6L6 family sketchy?
  67. HT regulator using 78xx
  68. Audio Research CA50
  69. Granite tiles
  70. SE Triode amp for a newbie
  71. tube is flashing and glowing very bright!
  72. Suggestions for another amplifier project.
  73. almost just another newbie thread...
  74. ts9 pt9 triode
  75. help Etude 124BA keep blowing fuse.
  76. Metal 6L6s?
  77. Hybrid amplifier help...
  78. Tube input and mosfet output
  79. musical fidelity f22 schematic wanted
  80. An intriguing 300B SE-direct-coupled-amplifier
  81. Output capacitor
  82. Cascoded Long Tail Pair Inferno!
  83. Tube ornamental rim
  84. What should be mod first in my amp
  85. EL504/PL504 spice model
  86. Long Tail Pair Phase Inverter with Penthode ?
  87. new spice models available
  88. Output Capacitor Value
  89. Popular tube websites notifier
  90. Convergent Preamplifier Schematich
  91. Source of tubes & associated stuff in Sydney?
  92. Projects involving EF50 tubes?
  93. Kt77?
  94. Best way to translate schematic into actual layout?
  95. Clean to breakup range
  96. 26 preamp problem
  97. mono tube microphone preamp
  98. Help designing a tube amp...
  99. MJE350 pinout and ccs issue
  100. KGB- DC Coupled Hybrid Balance OTL/OCL HeadAmp
  101. negative voltage doubler for ccs
  102. Loftin-White
  103. SET amp from 1619 driving a 809. Opinion wanted.
  104. Re:preamp sputtering noise
  105. Building an ECL82 Single Ended Amp ...
  106. help a newbie build his first tube project
  107. Mercury Vapour rectifiers
  108. El Cheapo Circlotron PSU question....
  109. lookin for a tube buffer
  110. Baby SET w/6FD7 and ilk, for Bas and others....
  111. py500A question
  112. Mundorf Silver-oil VS Jensen copper foil
  113. Drawing Schematics for Tubes
  114. Drive Current for EL509 Enhanced Triode
  115. How to use Svetlana 6d22s?
  116. James Singapore
  117. Aikido using a #26 tube?
  118. Tube and DIY Newbie Kel84 vs Stoetkit Jr.2
  119. ZOTL and ferrites
  120. 6V6 vs EL84 SE UL
  121. Component selection
  122. Snap sound on preamp powerup
  123. Secondary voltage for heaters
  124. good schematic archive site
  125. Transitional SIlvertoneAmp between 1472 and 1482?
  126. Cheap Source for Hammond 125ESE
  127. PCF801 - pentode section has remote or sharp cut-off?
  128. Tube as a desk lamp
  129. Ella EL34 Bias Help
  130. tube diy can or can t
  131. Quad II Problems
  132. Choke input P/supply and critical damping
  133. balanced grounded grid preamp
  134. Fluorescent ballasts in SE
  135. Hammond Transformers and EZ80/EZ81
  136. Look what I found this weekend!
  137. Question on 300B tubes from Parts Connexion
  138. Russian Tubes
  139. Help a first timer to select...
  140. GE 5692 BLACK base?
  141. sources on the web for chinese amps
  142. How much capacitance in a power supply
  143. Parallel 12AT7 for 2A3 driver?
  144. Maida's regulator
  145. Common Mode Chokes for Heater Supplies
  146. Ming Da MC34B....passive or active pre amp?
  147. tube power supply upgrade... elna's, RTX, infinicap
  148. What tube do you think this OPT matches?
  149. safety fuse
  150. Short and sweet review of Sun Audio SV-300BE
  151. Help selecting a DIY schematic
  152. OP Transformer power rating guesstimate
  153. need a lot help on an el34 project :P
  154. Anode Follower
  155. CCS for tubes/valves: PCBs
  156. Improvement to DM's Generic Triode Model for 12AU7
  157. ccs, direct coupling and stuff
  158. Replica Pre QUAD 22 - Questions on mids
  159. Is this cap ok for audio?
  160. Remote Controlled Stepped Attenuator
  161. UltraLinear in toroidal parafeed, my findings.
  162. Help to tame a 12AX7/6AQ5 circuit
  163. DIY something like iMPAMP??
  164. Have you seen this tester?
  165. Help with taming a 12AX7 and 6AQ5a amp
  166. Linear Technology 1083CP adjusting problem
  167. radiation tubes
  168. 813 socket dimensions
  169. Cheap SE output transformers
  170. BIAS and B+ caps WKZ or NH
  171. Cleaning tubes...
  172. Manfred Huber
  173. IEC standards, anywhere?
  174. possible volume and balance control - does this look like it will work well?
  175. EL84 Amp - Baby Huey
  176. 6X4
  177. What do you guys use for HV toggles?
  178. Balanced Operation Output Transformer Questions from N00b
  179. Static stain cleaning
  180. 12AX7 preamp project
  181. SE 1.5W OTL
  182. Cross-coupled NFB for PP Pentode
  183. Parallel triodes - CONS?
  184. output transformer spec questions
  185. Choosing Valve
  186. opinions wanted - Lafayette Stereo 224 Tube Amp
  187. New KT77 Tubes by JJ
  188. 60HL5?
  189. Standby switch
  190. Problems With Simple Gounded Cathode Gain Stage
  191. srpp 6c33c
  192. Mullard 5-20/Maplin 4-20 modification to NON-Ultra Linear mode????
  193. Anyone in gta know their tubes?
  194. 801 low power SE amp
  195. superalloy ( 78% nickel/2%cobalt) EI-66 with Furukawa ultimate wire.
  196. OPT resistance for EL84 PP Class A
  197. What’s in this amplifier?
  198. Whose logo?
  199. pentode phase splitter
  200. Is this EL84M UL PP OK?
  201. Tube preamp question...also, chassis layout
  202. Quad II Mods/Tweeks
  203. Trying to recreate a Fisher SA-16
  204. CCS, how it actually works?
  205. 400V CRC PS, what do I do with it?
  206. Does anyone has Milbert BAM230 tube car power amplifier
  207. Valve sockets
  208. Can I use 12AT7?
  209. Music Reference RM5 mkIII
  210. Help: Sun Audio Kits where from? EIFL, ELEX, Sun Audio?
  211. Looking for a link on power supply design
  212. Is feedback required for UL EL84PP?
  213. Someone working on an insane tube project?
  214. Load line frustration
  215. Is 12B4/A good for differential pair?
  216. Heretical Unity Gain line stage PLUS a little gain ?
  217. tube vibration
  218. Small temp voltage on phono input-problem?
  219. What's it all about?
  220. IXYS GaAs Schottky Diodes.
  221. Maplin 4-20
  222. Line preamp using 2 ECC88 per channel
  223. What to use as a nice amp case?
  224. Signal Tube Longevity ?!?
  225. HK 250 power amp tube amp schematic
  226. Need help with connecting OPT.
  227. 6SL7 driving SE EL34 ?
  228. power supply tranny
  229. Output Transformer Background
  230. Schematic
  231. £¸£´£µ no dc passing the opt
  232. New preamp schematics
  233. Transformer ID & Specs Sheet Help
  234. I Know Some Tube Flavors Are Worth More Than Others...
  235. Why hybrid CCS?
  236. Best cap to cathode tube bypass is …..
  237. Cheap el84 se
  238. Bridge rectifier with capacitors???
  239. 4 volt (dc?) heater from 6.3v
  240. Does anyone recognise this valve amp
  241. Which 6SN7 preamp should I build?
  242. Help on upgrading my Tube Preamp
  243. looking for a non-copyrighted preamp schematic
  244. Problems with cathodyne
  245. more gain needed -> how?
  246. OT: Tribute to Kondo-San
  247. PCL82 SE Tube Amplifier Kit
  248. Rectifier voltage difference, Why?
  249. partial feedback stuff
  250. replace 5y3

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