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

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