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  1. drd c3g/300b - help needed
  2. tubecad is back
  3. Happy birthday to tubes. Happy birthday to tubes. !
  4. Anyone used...gulp...kitparts.com?
  5. Grounding the Decware Se84sc
  6. Rogers Cadet III Schematics
  7. OTL amp help
  8. most simple design
  9. modify eagle el84 for guitar
  10. Please verify this circuit, is correct??
  11. EL509 vs EL519
  12. Heathkit AA-181 schematic needed
  13. EF 91 / Z77 Amp? help needed for newbie
  14. buzzing ST-70...plea for help
  15. Zen se-84cs question............
  16. Help with transformer
  17. 211 or EL34Triode?
  18. bootstrapping two SE transformers into a pp one?
  19. Gary Pimm's battery biased mosfet cccs
  20. PSU for SRPP - Voltage or Current Regulator?
  21. MC-30 rebuild, any ideas?
  22. ls-37 MM/MC RIAA Phono Amp from diyclub.biz
  23. Amorphous core transformers only work above 20KHz?
  24. Help with component layout?
  25. Output Transformer Sizing?
  26. PSU worries...
  27. 6BL7 as output tube for low power SE amp?
  28. advice for 6L6GC P-P amp
  29. need some info in a UTC s-16? anyone!
  30. 2A3 power supply transformer
  31. Hi-Bass button
  32. Searching for my first tube amp
  33. Which phono preamp ?
  34. potted transformers
  35. chokes and power supplies
  36. Heathkit A7 ?
  37. Best tweeter amp
  38. Should I use a cathode capacitor in my SE amp?
  39. Help, Just Starting Out
  40. JJ Tesla ECC99 spice model
  41. Newbie to tubes, what can they handle?
  42. Quicksilver rectifier
  43. SE amp question
  44. yaqin mc10k
  45. Hello again, plus a couple of Q`s.
  46. My first home audio amp.
  47. Boostrapping?
  48. KT88 budget- Sovtek, Valve Art, EH?
  49. Tube Bass Amp Schematic
  50. looking for schematic with 6em7 as a driver or...
  51. Multi-Channel Contol Unit
  52. TAD-EL84-STR experience?
  53. OTL question
  54. Good SET for newbie
  55. 6n1p simpl(ish) design
  56. Short list of DIY tube amps with PCBs available...
  57. Parallel feed (choke load) in output stage
  58. Few general question for starter?
  59. winding a simple PP output transformer
  60. Cats prefer 12E1's
  61. Tube vicinity heat problems(maybe?)
  62. Help me design pre-amp PS
  63. Power Amplifier With EL 34
  64. psu design problem
  65. Anyone have info about Jukka Tolonen?
  66. What do you think about this hybrid amp?
  67. Power supplies in mic tube preamps
  68. Hammond 1629SE
  69. 41 Valve Amp? vs 45
  70. DeWald M-1200
  71. Jansen Bassman 50
  72. Pilot AA-903B Tube Amp
  73. MC225 schematic needed
  74. Can you make a +/- supply with valve rectification ?
  75. Audio Innovations Series 500 problems
  76. Big, Heavy, Tube regulated Lambda Power supply
  77. Audio Note DAC Output Transformer Hookup
  78. Got some tubes, help me properly evaluate them
  79. current flow, which direction?
  80. Tube flashes upon turn on, why?
  81. Odd hum problem
  82. DHT and resistors in parallel w/ heater
  83. Presenting the "Fartbottle" deluxe.
  84. amp mod
  85. Need info about rare Siemens Cf "post tube"
  86. Tube defect - What is the problem.
  87. el84 amp
  88. VIETA A-215 Schematics
  89. 6AR6/6098 ultralinear
  90. Tube kit for beginner
  91. earthing!!!!!!!!!!
  92. Heating only one half of a double triode
  93. Quick question regarding PSU Designer II
  94. calculate +B in EL34 SE triode conect
  95. Help with driver transformer
  96. Tube buffer for a cd player
  97. VSE riaa equalizer phono stage
  98. AC or DC Heater?
  99. looking for a good valve amp to fix
  100. Best operating point for 7044 and 5687
  101. S&B TX102 and preamplier stages
  102. I need help
  103. 6AS7 Mono Block's
  104. Filter/Regulator for B+ Supply
  105. Ecf 83
  106. cheap but good SET amplifier?
  107. DRD calculator
  108. Luxkit A1020 need help!!!
  109. Sophia Electric™ 300B 2.5V Mesh Plate Tubes
  110. benifits of auto bias
  111. KR Enterprice
  112. Preamp Boards From Hong Kong
  113. earthing
  114. Best sounding medium priced EL34 tube?
  115. 6CA5 Rectifier - B2Spice Model
  116. Help needed for a 6L6 Push pull amp
  117. constant current filament regs
  118. 6SN7 Basics (Newbie)
  119. Anyone tried the EH fat bottle 6CA7?
  120. TJ Tubes
  121. My tubes are going down. HELP !!!!
  122. Tino Zottola...where are you ?
  123. Lilliput amp
  124. filament rails
  125. Ss Diodes??
  126. Tube mic preamp
  127. CCS Filament Regulators for split filaments
  128. Quicksilver 8417 power supply caps?
  129. Audio Research LS7
  130. simple valve preamp
  131. valve preamp
  132. stand by switch or not?
  133. Omega Grand 6 and which amp?
  134. Line amp to speakers
  135. a bit more bass?
  136. Output transformer application help please.
  137. 5687 pre...some problems
  138. Recommendations needed for designs of PP pentode strapped as Triode
  139. KT88 push pull noob questions (sry)
  140. Need help identifying Stromberg Carlson Amp
  141. help needed diagnosing Grounded Grid power supply
  142. Building a tube Model????
  143. EL34 best for triode strapping ?
  144. Subwoofer amp
  145. Replacing Valves
  146. help me on 845 scheme....
  147. Help valve newb salvage some old TV tubes
  148. Cathode follower distortion results
  149. Bullet Proof 6L6GC Recommendation PLEASE
  150. newbie recomendations please
  151. NOS Tubes
  152. Audio Research CA-50 tube rolling
  153. OT on Decaware SE84C-S
  154. Change PP Amp Into Phono Pre?
  155. pl84 ore el84
  156. VTL Compact 100 Monoblock x 2.
  157. Battery bias a 6SU7 in the 300b billies
  158. Speaker impedance roughly 6 ohms, 2A3 SET...
  159. B2 Spice SE tranformer parameters
  160. Determining cap values (old radio)
  161. thoughts on 300b operating points with 3k output
  162. Grounded Grid wiring question
  163. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  164. Found some EC8010
  165. SE PX4 or PX25 amp, anyone built one????????
  166. HAL-O Damping Instruments
  167. An intriguing 6S45P direct coupled 300B amplifier
  168. difference between Cayin and Jolida
  169. 417a line preamp help
  170. kenwood trio el84 push pull schematic
  171. Any comments on this design?
  172. Amp for speaker testing
  173. Shielding preamp power supply
  174. Troubleshooting EL34 push pull amp
  175. amp input volume
  176. What Mullard 12AX7 is better?
  177. Universal audio / Avalon mic pre schematics
  178. Since transconductance amps has become so popular lately...
  179. Mecanical PSU hum
  180. help i.d. this amplifier
  181. Question about a hybrid PSU design
  182. 35Z5GT half-wave rectifier
  183. Riviera 725 guitar tubes amp
  184. Best place to use 2 Jupiter Bee caps in tube amp?
  185. what rating for diode of 450Volts DC
  186. Telefunken 6L6GC ???????
  187. Why are my amps doing this?
  188. How to calculate the gain of an input-driver stage?
  189. 6L6 vs EL34
  190. protect your amps
  191. Snap Ring Octal Sockets
  192. Suitable operating point for 6SN7 as a differential driver ?
  193. Suitable rectifier
  194. 6N1P & SV83 mu stage driving 845?
  195. Has anyone built a transformer coupled preamp?
  196. Circuit diagram for RCA vintage 6BQ5 amplifier?
  197. Driver valve discussion
  198. Help to choose the tubes!
  199. Why hum in one channel only?
  200. DC heater noise WORSE than AC
  201. Rdh 4
  202. 900v B+ Silly time.
  203. tube rectifier arrangement
  204. Matrix Amp?
  205. Dynaco Stereo 70 amplifier
  206. Ultimate power switch?
  207. AC or DC current for 300B and 2A3 tube filaments ?
  208. 0.1uF @ 3000V Ceramic?
  209. Power Triodes in current production
  210. Anyone in the world identify eico trans?
  211. Mullard 5-20 in triode mode
  212. THX certification, or integrated near THX Quality,
  213. Feedback resistor on Baxandall tone stack?
  214. SE Pentode or PP Triode ?
  215. how does one "voice" a tube amp
  216. Musical fidelity Nu-Vista
  217. Tube substitutions in Heathkit W5M
  218. PSUD2 question
  219. 6L6 class A P-P CFB amp
  220. i have a matched pair of 3cx1000a7..
  221. Different silvering patterns on tube tops?
  222. Designing Guitar Amp's Project
  223. Help with amp rebuild
  224. Mystery (to me) phase inverter?
  225. Biasing
  226. SE KT88 Amp
  227. Good design?
  228. Auto Biasing
  229. nuvistor MC step up
  230. Corian for tube amp?
  231. 6AQ5 Line stage?
  232. 6550 o/p stage
  233. Help with finding preamp schematic
  234. AVO data for 8417 (Quicksilver) tubes
  235. Any experience with this nice toroidal OT?
  236. 300B SE cathode feedback to grid?
  237. hummmmmmm?
  238. ERO KP1832 Bypass Caps for sale
  239. no bass makes pedro a whiny boy
  240. Iron, glass, sand and lead.
  241. Is this any good? Considerations
  242. 2A3 SET Output Transformer opinions/recommendations
  243. My 6C45 DC 6C41, advice wanted
  244. DIY valve
  245. A good SE project?
  246. who will build me this special "line tubeamp"
  247. PI filters
  248. Designing a simple dc filament supply?
  249. Rogers Cadett amp
  250. HI & a few words/questions ...

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