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  1. Quad II Eighty Schematic?
  2. Adventures with Aikido
  3. Beard BB 100 and Beard A35
  4. Noob is about to press the BIN button and buy a Chinese tube amp kit. Save me/ help?
  5. Ebay Kit EL34 6n9P 5Z3P Build Thread.
  6. Sakuma 46 / 801A Circuit
  7. Tube Manufacturing at Expo-Pul
  8. Philips EL6410, how does it sound?
  9. tube amp power help
  10. Video from the Czech Tesla Tube factory
  11. Alans' rantings
  12. 3 x 3 Tube amp 30 watts
  13. Maximum allowed capacitance after gas rectifiers
  14. PSUD2 rectifiers list
  15. EL34 amplifier with these transformers
  16. Aikido Octal Dual Mono for Dummies... Help me.
  17. Monster Trans or Really Good Doorstop?
  18. The correct way to wire DC filaments 3B7 DHT
  19. Haller Circuit Problems
  20. Need recommendation for VERY basic amp project
  21. Recommendation on tube buffer?
  22. For Your Consideration: Unity Coupled Plitron Amp, No Bootstrapped Driver, No GNF
  23. Tango Transformers - any unique push pull circuits?
  24. newbe at designing tube amp
  25. Need help with microphone preamp.
  26. Trouble shooting vintage Harman Kardon A250
  27. Coating on Hammond Power Transformer
  28. Small tube amp for PC
  29. CCS dissipation
  30. 6SL7 - grid stopper values
  31. HELP - Laying out footprint for 9 pin tube socket
  32. Telefunken Magnetophon 104 - Keep or strip?
  33. Transformer rewinding or repair needed.
  34. Sun Audio in the USA?
  35. Wyetech Opal 6SN7 tube preamp, any DIY kit sound even close?
  36. KBG capacitors
  37. Praise for the 6N6G
  38. DHT equivalent to 12AT7?
  39. Why high voltage in coupling caps?
  40. BIAS Consonance M800SE
  41. SE ECC83 - EL 84 - EZ 81 - 1964 !
  42. Name That Design!!
  43. Distortion expected in SE DC coupled 26/45 amp
  44. One Channel is Louder than the other on my Tube Phono Pre
  45. Need a Zobel Network (or RC shunt) in tube amplifier?
  46. Aikido 12VAC Help needed
  47. Novarria TU-30 output transformer
  48. Question on Schematic
  49. CJ PV-10A
  50. Mcintosh C2200 ReCap
  51. simple tube amp for music
  52. SE Parafeed Signal Return ?
  53. RCA VC274
  54. Heathkit w5
  55. tube rectifier for 1000v AC
  56. Tone Control Intercept Point on TU 8200
  57. Help with transformer and power switch wiring
  58. Mullard 5-20 iron
  59. Hard data on HP928
  60. Glassware Audio
  61. 5U4G problem
  62. Schematic för mono el84 SE wanted
  63. qualtek power module
  64. Low Static Hum Issue
  65. Look over my whacko schematic?
  66. PSU inrush current
  67. Heathkit A7 Output transformer
  68. THose lovely triodes
  69. Just picked up a shoebox of tubes from Craigslist
  70. Lower the primary impedance of the OPT to reduce distortion?
  71. Parallel/Series heater question
  72. Jay's Cheaterpants Hong Kong Marantz 7 Clone Build-Along
  73. Unused half of dual triode in low gain input stage in mono blocks?
  74. 12AL8 PP Amp Low Volume - Is this all or i can get more?
  75. Power supply resistors
  76. Aikido Headphone amplifier
  77. preamp
  78. Resistor question
  79. How to turn Salvaged Parts into Projects..
  80. Output polarity?
  81. Help with this circuit
  82. Doing silly stuff for fun
  83. Modern Mullard head scratching
  84. Leben cs660p un identified component
  85. KT88 or 6L6 High-mu triode curves
  86. Edcor 240V primary 50hz humming
  87. Aikido quesion
  88. Why 6L6 is not more popular as power tube?
  89. 304TL SET schematic redesign. EML-20b Alternative?
  90. Question about Mullard EL84 Aplication note
  91. Magnavox tuner preamp 570111
  92. Tube amps on E-Bay
  93. Input, Output and Transfer Capacitance Question
  94. K502 Mods
  95. filament supply rectifier
  96. Triode as Voltage-Controled Dynamic Resistance in Compressor/Limiter
  97. RHSpud: Novice build
  98. 2A3 Amp - Not Another One...
  99. 12b4a pp
  100. replacing ECC82 with ECC99
  101. 2A3 input sensitivity
  102. Amp for JBL 2447 driver?
  103. Rare Philips 12ax7 Code Need Help
  104. Two quick questions on 35W4
  105. To convert Novar pins for Magnovale pins
  106. Mingda mc7r late design tweaking
  107. PSU for KT-90 PPP
  108. Noisy amp
  109. Book Recommendation for Newbies
  110. High power GU46 SE amplifier - help with certain issues
  111. Boyuu hifi Equis A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod
  112. Unknown SE output transformer wiring
  113. Class A output without all the heat cheat
  114. Grid leak bias - Easy to overload?
  115. How about LTP with degenerate resistor?
  116. 1200 vdc capacitor tube amp.
  117. Telefunken OPT
  118. Fixed bias question
  119. Question about loadline in Morgan Jones
  120. Please explain this power supply...
  121. 6SN7 - EL84 SE with interstage?
  122. 211 amp test. Square wave measures
  123. SAC thailand OPT for 211/845
  124. 6P21s
  125. 6L7M, Is there any use in audio?
  126. 958a Line Preamp
  127. What capacitors do i need for this?
  128. Experience of the TentLabs Bias control modules?
  129. Simple Line Stage Topology
  130. compound/hybrid amp
  131. 6CJ3's in full wave rectifier
  132. CCS anode load overcomes 3/2 law non-linearity
  133. EL84 PP OT design for amp project
  134. $3k o/p XFR
  135. Jadis Factory Tour
  136. Considerations for Tubelab Simplse
  137. "budget" headphone amp
  138. Power Pulse Tetrode for Audio
  139. The SE UL 6P41S USSR
  140. buzz from dacmagic on kit st70
  141. WE 350B and WE311B available
  142. How determine p-g1 capacitance in trioded pentode
  143. Why Is My Single Chassis #26 PreAmp So Stable!
  144. Rare tube
  145. Allan's rantings
  146. Tube Amp problem ?
  147. Tube preamp SS PS slight thump like dead wax on an LP
  148. Hum if volume control between midpoint and max; No hum if volume knob at max or zero
  149. SET's first ripple in a big wave ? Here it is . . .
  150. Fourier Chassis for the shipping costs
  151. 6P3S/6L6GB Amplifier from scrap parts :)
  152. Choke loaded 6ax4 bridge
  153. Transformer and choke orientation question
  154. Why some people want DC coupling in power amp?
  155. want to diy a tube preamp using only 12 volts help
  156. Russian 6p3s??
  157. Single-ended 8w amp
  158. Hovland HP 100
  159. Simple Line Stage Expanded
  160. Bridge Rectifier with Fullwave Tube
  161. Can anyone help diagnose this SOHA II amp channel?
  162. Schade and the 6C33C
  163. AMC 3030 annoying ripple noise
  164. Question and comments on SE vs PP by Eddie Vaughn
  165. 6080 PSE output Tx?
  166. Difference Between Self-Inverting Push Pull and Anti-Triode?
  167. Is this capacitor required?
  168. Why nowadays tube amplifier should play better than 1960's amplifiers?
  169. Aikido 12vac
  170. iPod to Adcom tube buffer
  171. Referencing a direct coupled output stage
  172. Long lead length to tube socket
  173. 6FH8 a strange tube for audio?
  174. Troubleshooting a µ-follower
  175. unison research unico thump on power on?
  176. CCS Not Working
  177. Allied 333 Hum
  178. EL34 Grid 3 connection
  179. The differential amplifier
  180. low power otl amplifier
  181. Using two stage opamp as first gain stage of power amp.
  182. Standing opts and lying pts?
  183. Tube substitition wanted
  184. Fatman Wi-Tube Hybrid Valve Amplifier with FatDock - No Output
  185. Operating point for 6SN7
  186. Which is the ultimate, perfect negative feedback amount you recommend in UL SE?
  187. Where to buy McIntosh Tube Amplifier Parts?
  188. comments/corrections on 6bg6 pp triode amp
  189. Question about LTP in Morgan Jones' book
  190. Matching 16 ohm loudspeaker into 8 ohm output transformer: can i do any modification?
  191. EL34 SE ultralinear configuration working as a triode: pro and cons
  192. First Build Help Needed - Transformer
  193. dynaco st70 headphone amp
  194. Velleman 4040 rebuild
  195. help needed for heater wiring of a 300B
  196. Best UX4 sockets?
  197. Filson 216 phono rework, advice please
  198. IRFS820B
  199. Help converting integrated amp to preamp
  200. 6N16B triodes: asking advice
  201. D3a IV
  202. stability of bias of KT88 in Xindak V30
  203. half 6SN7 / 6CG7 7pin mini substitute?
  204. Simple Line Stage
  205. 6L6GC redplating - what say you please?
  206. Yaqin MC-10L no bass response
  207. My first phono pre
  208. Fet rectifier?
  209. PSpice simulation
  210. Two-cases amplifier, question about power switch
  211. VTL bias problems compact 100
  212. Assembly Manual heathkit a7-b
  213. Question about CCS used in Morgan Jones' book.
  214. Layout question -- Do PS chokes inject hum into output caps?
  215. Pickering 132e record compensator
  216. Gain in Aikido for F4 + fe208ez?
  217. Audio note kit 1 power transformer
  218. DC Cancellation using Secondary Winding of Gapless OPT
  219. help for power transformer for scott 99d amp
  220. New rack mounted chassis
  221. Altec 342B bridging
  222. Kofi's Uniamp
  223. Please help with vexing grounding issue
  224. 6V6 class A2
  225. Buzzing Preamp
  226. 6922/E88CC in Parallel Mode without Cathode Resistors?
  227. 211 based on iGoliath Amplifier
  228. Art Audio UK dm vps
  229. Power supply conversion.
  230. EL84/6BQ5 tube amp project
  231. Little Bear P8 Amp Questions.
  232. 6k6 gt rca radiotron tube ?????
  233. The Guiguang 300B have good bass ?
  234. Ampex 300 Input Transformer
  235. Recap Heathkit A-7 amplifier.
  236. Testing KT-120
  237. 27GB5/PL504 The Same?
  238. Running Eico ST70 at 90 volts.
  239. TU-8200 with speakers 94db
  240. Magic behind Mentor
  241. dn2540 noise
  242. Rectifier PIV derated for altitude ?
  243. CLC psu for headamp?
  244. Teeco 610d amplifier schematic
  245. Has anyone tried the Aleph CCS in a tube amp?
  246. Question on 6 pin umbilical cord for tube power supply
  247. Transformer Spacing
  248. Can this be done?
  249. Low Voltage (60V) Stereo Tube Amplifier for Dummies (2+2W)
  250. Comparing OPS.

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