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  1. Just got a nice EL84 based receiver
  2. Is there any good current Production 6550s?
  3. Building the Damn Good 300B
  4. convert trashed kolster k20 into tube amp?
  5. Junkbox Hero
  6. KT150 curves by Sofia
  7. My new EL84 Amp
  8. 1955 Bogen J330 Mic Input Problem
  9. parallel el84 output pp. shared coupling caps?
  10. Will a Western Electric 422A substitute for a 5Y3?
  11. Question for a moderator
  12. bottlehead quickie schematic
  13. RCA 6146B sub for 807 or 6L6?
  14. Leak monoblock hum
  15. Eico 2036
  16. Heathkit iT-12 signal tracer to much gain??
  17. Valve Monoblocks - am I being realistic?
  18. Aikido Headphone Amp and PS1 Power supply
  19. Transforming a triode into a pentode?
  20. New to amps - Long-tail pair and heater hum
  21. Experimenting with the Aikido 12Vac kit
  22. Strategies for Implementing Negative Feedback in a 12ax7 Line Amplifier
  23. Output Transformer Impedances
  24. PP 6l6 class ab...advice needed
  25. 300B
  26. 12AX7 EL34B TUBE AMPLIFIER
  27. UK info please
  28. PAS 2/3 RIAA Modification
  29. My Homage to the Earmax Headphone Amp
  30. Aikio Line Stage
  31. Lite Audio LS 58 schematic
  32. Lite Audio LS 58 schematic
  33. Love those triodes
  34. Differential Pair with negative feedback
  35. Quad II Eighty Schematic?
  36. Adventures with Aikido
  37. Beard BB 100 and Beard A35
  38. Noob is about to press the BIN button and buy a Chinese tube amp kit. Save me/ help?
  39. Ebay Kit EL34 6n9P 5Z3P Build Thread.
  40. Sakuma 46 / 801A Circuit
  41. Tube Manufacturing at Expo-Pul
  42. Philips EL6410, how does it sound?
  43. tube amp power help
  44. Video from the Czech Tesla Tube factory
  45. Alans' rantings
  46. 3 x 3 Tube amp 30 watts
  47. Maximum allowed capacitance after gas rectifiers
  48. PSUD2 rectifiers list
  49. EL34 amplifier with these transformers
  50. Aikido Octal Dual Mono for Dummies... Help me.
  51. Monster Trans or Really Good Doorstop?
  52. The correct way to wire DC filaments 3B7 DHT
  53. Haller Circuit Problems
  54. Need recommendation for VERY basic amp project
  55. Recommendation on tube buffer?
  56. For Your Consideration: Unity Coupled Plitron Amp, No Bootstrapped Driver, No GNF
  57. Tango Transformers - any unique push pull circuits?
  58. newbe at designing tube amp
  59. Need help with microphone preamp.
  60. Trouble shooting vintage Harman Kardon A250
  61. Coating on Hammond Power Transformer
  62. Small tube amp for PC
  63. CCS dissipation
  64. 6SL7 - grid stopper values
  65. HELP - Laying out footprint for 9 pin tube socket
  66. Telefunken Magnetophon 104 - Keep or strip?
  67. Transformer rewinding or repair needed.
  68. Sun Audio in the USA?
  69. Wyetech Opal 6SN7 tube preamp, any DIY kit sound even close?
  70. KBG capacitors
  71. Praise for the 6N6G
  72. DHT equivalent to 12AT7?
  73. Why high voltage in coupling caps?
  74. BIAS Consonance M800SE
  75. SE ECC83 - EL 84 - EZ 81 - 1964 !
  76. Name That Design!!
  77. Distortion expected in SE DC coupled 26/45 amp
  78. One Channel is Louder than the other on my Tube Phono Pre
  79. Need a Zobel Network (or RC shunt) in tube amplifier?
  80. Aikido 12VAC Help needed
  81. Novarria TU-30 output transformer
  82. Question on Schematic
  83. CJ PV-10A
  84. Mcintosh C2200 ReCap
  85. simple tube amp for music
  86. SE Parafeed Signal Return ?
  87. RCA VC274
  88. Heathkit w5
  89. tube rectifier for 1000v AC
  90. New Tubes For Peavey Valveking VK100
  91. Tone Control Intercept Point on TU 8200
  92. Help with transformer and power switch wiring
  93. Mullard 5-20 iron
  94. Hard data on HP928
  95. Glassware Audio
  96. 5U4G problem
  97. Schematic för mono el84 SE wanted
  98. qualtek power module
  99. Low Static Hum Issue
  100. Look over my whacko schematic?
  101. PSU inrush current
  102. Heathkit A7 Output transformer
  103. THose lovely triodes
  104. Just picked up a shoebox of tubes from Craigslist
  105. Lower the primary impedance of the OPT to reduce distortion?
  106. Parallel/Series heater question
  107. Jay's Cheaterpants Hong Kong Marantz 7 Clone Build-Along
  108. Unused half of dual triode in low gain input stage in mono blocks?
  109. 12AL8 PP Amp Low Volume - Is this all or i can get more?
  110. Electrolytic cap voltage
  111. Power supply resistors
  112. Aikido Headphone amplifier
  113. preamp
  114. Resistor question
  115. How to turn Salvaged Parts into Projects..
  116. Output polarity?
  117. Help with this circuit
  118. Doing silly stuff for fun
  119. Modern Mullard head scratching
  120. Leben cs660p un identified component
  121. KT88 or 6L6 High-mu triode curves
  122. Edcor 240V primary 50hz humming
  123. Aikido quesion
  124. Why 6L6 is not more popular as power tube?
  125. 304TL SET schematic redesign. EML-20b Alternative?
  126. Question about Mullard EL84 Aplication note
  127. Magnavox tuner preamp 570111
  128. Tube amps on E-Bay
  129. Input, Output and Transfer Capacitance Question
  130. K502 Mods
  131. filament supply rectifier
  132. Triode as Voltage-Controled Dynamic Resistance in Compressor/Limiter
  133. RHSpud: Novice build
  134. 2A3 Amp - Not Another One...
  135. 12b4a pp
  136. replacing ECC82 with ECC99
  137. 2A3 input sensitivity
  138. Amp for JBL 2447 driver?
  139. Rare Philips 12ax7 Code Need Help
  140. Two quick questions on 35W4
  141. To convert Novar pins for Magnovale pins
  142. Mingda mc7r late design tweaking
  143. PSU for KT-90 PPP
  144. Noisy amp
  145. Book Recommendation for Newbies
  146. High power GU46 SE amplifier - help with certain issues
  147. BOYUU HIFI EXQUIS A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod
  148. Unknown SE output transformer wiring
  149. Class A output without all the heat cheat
  150. Grid leak bias - Easy to overload?
  151. How about LTP with degenerate resistor?
  152. 1200 vdc capacitor tube amp.
  153. Telefunken OPT
  154. Fixed bias question
  155. Question about loadline in Morgan Jones
  156. Please explain this power supply...
  157. 6SN7 - EL84 SE with interstage?
  158. 211 amp test. Square wave measures
  159. SAC thailand OPT for 211/845
  160. 6P21s
  161. 6L7M, Is there any use in audio?
  162. 958a Line Preamp
  163. What capacitors do i need for this?
  164. Experience of the TentLabs Bias control modules?
  165. Simple Line Stage Topology
  166. compound/hybrid amp
  167. 6CJ3's in full wave rectifier
  168. CCS anode load overcomes 3/2 law non-linearity
  169. EL84 PP OT design for amp project
  170. $3k o/p XFR
  171. Jadis Factory Tour
  172. Considerations for Tubelab Simplse
  173. "budget" headphone amp
  174. Power Pulse Tetrode for Audio
  175. The SE UL 6P41S USSR
  176. buzz from dacmagic on kit st70
  177. WE 350B and WE311B available
  178. How determine p-g1 capacitance in trioded pentode
  179. Why Is My Single Chassis #26 PreAmp So Stable!
  180. Rare tube
  181. Allan's rantings
  182. Tube Amp problem ?
  183. Tube preamp SS PS slight thump like dead wax on an LP
  184. Hum if volume control between midpoint and max; No hum if volume knob at max or zero
  185. SET's first ripple in a big wave ? Here it is . . .
  186. Fourier Chassis for the shipping costs
  187. 6P3S/6L6GB Amplifier from scrap parts :)
  188. Choke loaded 6ax4 bridge
  189. Transformer and choke orientation question
  190. Why some people want DC coupling in power amp?
  191. want to diy a tube preamp using only 12 volts help
  192. Russian 6p3s??
  193. Single-ended 8w amp
  194. Hovland HP 100
  195. Simple Line Stage Expanded
  196. Bridge Rectifier with Fullwave Tube
  197. Can anyone help diagnose this SOHA II amp channel?
  198. Schade and the 6C33C
  199. AMC 3030 annoying ripple noise
  200. Question and comments on SE vs PP by Eddie Vaughn
  201. 6080 PSE output Tx?
  202. Difference Between Self-Inverting Push Pull and Anti-Triode?
  203. Is this capacitor required?
  204. Why nowadays tube amplifier should play better than 1960's amplifiers?
  205. Aikido 12vac
  206. iPod to Adcom tube buffer
  207. Referencing a direct coupled output stage
  208. Long lead length to tube socket
  209. 6FH8 a strange tube for audio?
  210. Troubleshooting a µ-follower
  211. unison research unico thump on power on?
  212. CCS Not Working
  213. Allied 333 Hum
  214. EL34 Grid 3 connection
  215. The differential amplifier
  216. low power otl amplifier
  217. Using two stage opamp as first gain stage of power amp.
  218. Standing opts and lying pts?
  219. Tube substitition wanted
  220. Fatman Wi-Tube Hybrid Valve Amplifier with FatDock - No Output
  221. Operating point for 6SN7
  222. Which is the ultimate, perfect negative feedback amount you recommend in UL SE?
  223. Where to buy McIntosh Tube Amplifier Parts?
  224. comments/corrections on 6bg6 pp triode amp
  225. Question about LTP in Morgan Jones' book
  226. Matching 16 ohm loudspeaker into 8 ohm output transformer: can i do any modification?
  227. EL34 SE ultralinear configuration working as a triode: pro and cons
  228. First Build Help Needed - Transformer
  229. dynaco st70 headphone amp
  230. Velleman 4040 rebuild
  231. help needed for heater wiring of a 300B
  232. Best UX4 sockets?
  233. Filson 216 phono rework, advice please
  234. IRFS820B
  235. Help converting integrated amp to preamp
  236. 6N16B triodes: asking advice
  237. D3a IV
  238. stability of bias of KT88 in Xindak V30
  239. half 6SN7 / 6CG7 7pin mini substitute?
  240. Simple Line Stage
  241. 6L6GC redplating - what say you please?
  242. Yaqin MC-10L no bass response
  243. My first phono pre
  244. Fet rectifier?
  245. PSpice simulation
  246. Two-cases amplifier, question about power switch
  247. VTL bias problems compact 100
  248. Assembly Manual heathkit a7-b
  249. Question about CCS used in Morgan Jones' book.
  250. Layout question -- Do PS chokes inject hum into output caps?

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