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  1. output transformer 9030/3
  2. Dynaco MKIII: new power cord
  3. 50C5 add-on amp
  4. Finished my stereo amp!!
  5. spl for 300b, kt88
  6. 2A3 tube review
  7. Audio Transformer Query
  8. Lafayette Phono preamp.
  9. Power transformer help
  10. EL84 SE question
  11. Pop/crackle in one channel
  12. 6GM8 Operating Point
  13. Propper grounding.
  14. EL34 plate glowing?
  15. wavlength audio cardinal
  16. help for tube noob
  17. Placing the powertransformer
  18. Tube audio periodicals
  19. PSU Question
  20. AudioInnovation 400
  21. c3g connections
  22. 6c33c-b Se
  23. tube preamp distortion
  24. What do you guys use to drill holes on chassis??
  25. S.E Problem.Urgent help Please!
  26. 6CA7, El34 or 5881?
  27. svetlana tubes
  28. 18C51 tube help!
  29. Power Tubes
  30. OTL PS question!!
  31. suggestions for the "lowest noise" pentode
  32. drd c3g/300b - help needed
  33. tubecad is back
  34. Happy birthday to tubes. Happy birthday to tubes. !
  35. Anyone used...gulp...kitparts.com?
  36. Grounding the Decware Se84sc
  37. Rogers Cadet III Schematics
  38. OTL amp help
  39. most simple design
  40. Please verify this circuit, is correct??
  41. EL509 vs EL519
  42. Heathkit AA-181 schematic needed
  43. EF 91 / Z77 Amp? help needed for newbie
  44. buzzing ST-70...plea for help
  45. Zen se-84cs question............
  46. Help with transformer
  47. 211 or EL34Triode?
  48. bootstrapping two SE transformers into a pp one?
  49. Gary Pimm's battery biased mosfet cccs
  50. PSU for SRPP - Voltage or Current Regulator?
  51. MC-30 rebuild, any ideas?
  52. ls-37 MM/MC RIAA Phono Amp from diyclub.biz
  53. Amorphous core transformers only work above 20KHz?
  54. Help with component layout?
  55. Output Transformer Sizing?
  56. PSU worries...
  57. 6BL7 as output tube for low power SE amp?
  58. advice for 6L6GC P-P amp
  59. need some info in a UTC s-16? anyone!
  60. 2A3 power supply transformer
  61. Hi-Bass button
  62. Searching for my first tube amp
  63. Which phono preamp ?
  64. potted transformers
  65. chokes and power supplies
  66. Heathkit A7 ?
  67. Best tweeter amp
  68. Should I use a cathode capacitor in my SE amp?
  69. Help, Just Starting Out
  70. JJ Tesla ECC99 spice model
  71. Newbie to tubes, what can they handle?
  72. Quicksilver rectifier
  73. SE amp question
  74. yaqin mc10k
  75. Hello again, plus a couple of Q`s.
  76. My first home audio amp.
  77. Boostrapping?
  78. KT88 budget- Sovtek, Valve Art, EH?
  79. looking for schematic with 6em7 as a driver or...
  80. Multi-Channel Contol Unit
  81. TAD-EL84-STR experience?
  82. OTL question
  83. Good SET for newbie
  84. 6n1p simpl(ish) design
  85. Short list of DIY tube amps with PCBs available...
  86. Parallel feed (choke load) in output stage
  87. Few general question for starter?
  88. winding a simple PP output transformer
  89. Cats prefer 12E1's
  90. Tube vicinity heat problems(maybe?)
  91. Help me design pre-amp PS
  92. Power Amplifier With EL 34
  93. psu design problem
  94. Anyone have info about Jukka Tolonen?
  95. What do you think about this hybrid amp?
  96. Power supplies in mic tube preamps
  97. Hammond 1629SE
  98. 41 Valve Amp? vs 45
  99. DeWald M-1200
  100. Pilot AA-903B Tube Amp
  101. MC225 schematic needed
  102. Can you make a +/- supply with valve rectification ?
  103. Audio Innovations Series 500 problems
  104. Big, Heavy, Tube regulated Lambda Power supply
  105. Audio Note DAC Output Transformer Hookup
  106. Got some tubes, help me properly evaluate them
  107. current flow, which direction?
  108. Tube flashes upon turn on, why?
  109. Odd hum problem
  110. DHT and resistors in parallel w/ heater
  111. Presenting the "Fartbottle" deluxe.
  112. amp mod
  113. Need info about rare Siemens Cf "post tube"
  114. Tube defect - What is the problem.
  115. el84 amp
  116. VIETA A-215 Schematics
  117. 6AR6/6098 ultralinear
  118. Tube kit for beginner
  119. earthing!!!!!!!!!!
  120. Heating only one half of a double triode
  121. Quick question regarding PSU Designer II
  122. calculate +B in EL34 SE triode conect
  123. Help with driver transformer
  124. Tube buffer for a cd player
  125. VSE riaa equalizer phono stage
  126. AC or DC Heater?
  127. looking for a good valve amp to fix
  128. Best operating point for 7044 and 5687
  129. S&B TX102 and preamplier stages
  130. I need help
  131. 6AS7 Mono Block's
  132. Filter/Regulator for B+ Supply
  133. Ecf 83
  134. cheap but good SET amplifier?
  135. DRD calculator
  136. Luxkit A1020 need help!!!
  137. Sophia Electric™ 300B 2.5V Mesh Plate Tubes
  138. benifits of auto bias
  139. KR Enterprice
  140. Preamp Boards From Hong Kong
  141. earthing
  142. Best sounding medium priced EL34 tube?
  143. 6CA5 Rectifier - B2Spice Model
  144. Help needed for a 6L6 Push pull amp
  145. constant current filament regs
  146. 6SN7 Basics (Newbie)
  147. Anyone tried the EH fat bottle 6CA7?
  148. TJ Tubes
  149. My tubes are going down. HELP !!!!
  150. Tino Zottola...where are you ?
  151. Lilliput amp
  152. filament rails
  153. Ss Diodes??
  154. Tube mic preamp
  155. CCS Filament Regulators for split filaments
  156. Quicksilver 8417 power supply caps?
  157. Audio Research LS7
  158. simple valve preamp
  159. valve preamp
  160. stand by switch or not?
  161. Omega Grand 6 and which amp?
  162. Line amp to speakers
  163. a bit more bass?
  164. Output transformer application help please.
  165. 5687 pre...some problems
  166. Recommendations needed for designs of PP pentode strapped as Triode
  167. KT88 push pull noob questions (sry)
  168. Need help identifying Stromberg Carlson Amp
  169. help needed diagnosing Grounded Grid power supply
  170. Building a tube Model????
  171. EL34 best for triode strapping ?
  172. Subwoofer amp
  173. Replacing Valves
  174. help me on 845 scheme....
  175. Help valve newb salvage some old TV tubes
  176. Cathode follower distortion results
  177. Bullet Proof 6L6GC Recommendation PLEASE
  178. newbie recomendations please
  179. NOS Tubes
  180. Audio Research CA-50 tube rolling
  181. OT on Decaware SE84C-S
  182. Change PP Amp Into Phono Pre?
  183. pl84 ore el84
  184. VTL Compact 100 Monoblock x 2.
  185. Battery bias a 6SU7 in the 300b billies
  186. Speaker impedance roughly 6 ohms, 2A3 SET...
  187. B2 Spice SE tranformer parameters
  188. Determining cap values (old radio)
  189. thoughts on 300b operating points with 3k output
  190. Grounded Grid wiring question
  191. PP-Triode , PP-UL , PP-Pentode-strapped-as-Triode
  192. Found some EC8010
  193. SE PX4 or PX25 amp, anyone built one????????
  194. HAL-O Damping Instruments
  195. An intriguing 6S45P direct coupled 300B amplifier
  196. difference between Cayin and Jolida
  197. 417a line preamp help
  198. kenwood trio el84 push pull schematic
  199. Any comments on this design?
  200. Amp for speaker testing
  201. Shielding preamp power supply
  202. Troubleshooting EL34 push pull amp
  203. amp input volume
  204. What Mullard 12AX7 is better?
  205. Universal audio / Avalon mic pre schematics
  206. Since transconductance amps has become so popular lately...
  207. Mecanical PSU hum
  208. help i.d. this amplifier
  209. Question about a hybrid PSU design
  210. 35Z5GT half-wave rectifier
  211. what rating for diode of 450Volts DC
  212. Telefunken 6L6GC ???????
  213. Why are my amps doing this?
  214. How to calculate the gain of an input-driver stage?
  215. 6L6 vs EL34
  216. protect your amps
  217. Snap Ring Octal Sockets
  218. Suitable operating point for 6SN7 as a differential driver ?
  219. Suitable rectifier
  220. 6N1P & SV83 mu stage driving 845?
  221. Has anyone built a transformer coupled preamp?
  222. Circuit diagram for RCA vintage 6BQ5 amplifier?
  223. Driver valve discussion
  224. Help to choose the tubes!
  225. Why hum in one channel only?
  226. DC heater noise WORSE than AC
  227. Rdh 4
  228. 900v B+ Silly time.
  229. tube rectifier arrangement
  230. Matrix Amp?
  231. Dynaco Stereo 70 amplifier
  232. Ultimate power switch?
  233. AC or DC current for 300B and 2A3 tube filaments ?
  234. 0.1uF @ 3000V Ceramic?
  235. Power Triodes in current production
  236. Anyone in the world identify eico trans?
  237. Mullard 5-20 in triode mode
  238. THX certification, or integrated near THX Quality,
  239. Feedback resistor on Baxandall tone stack?
  240. SE Pentode or PP Triode ?
  241. how does one "voice" a tube amp
  242. Musical fidelity Nu-Vista
  243. Tube substitutions in Heathkit W5M
  244. PSUD2 question
  245. 6L6 class A P-P CFB amp
  246. i have a matched pair of 3cx1000a7..
  247. Different silvering patterns on tube tops?
  248. Help with amp rebuild
  249. Mystery (to me) phase inverter?
  250. Biasing

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