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  1. Recommendations & Budget for DIY Tube Amp kit?
  2. Recommend a good plate choke for 5842 tube
  3. Recomendations for SE 6AQ5 Schematics?
  4. ST35 Phase Splitter
  5. german console pull recap Project - help needed
  6. 6B4G Monkey help
  7. These transformers can be used for EL84 SE?
  8. 300B...Ebay or DIY??
  9. Higher gain twin triode!
  10. ARC V70 bias
  11. 70v transformers explored.
  12. Are these caps stuffed ?
  13. Anyone recognizes this amp ?
  14. What is Simplest and Best 6550 PP What is Simplest and Best 6L6 PP circuit? (PK)
  15. My tube differential amplifier
  16. Helping a friend build a tube headphone amp.
  17. Tango XE-20S, tube option
  18. -follower with mosfet... how stable ?
  19. 5k or 2.5k for 6s45p
  20. minor hum problem
  21. Help to choose budget Tube Amp....
  22. Vao
  23. Help with tube-rolling 300b Ming-Da amp?
  24. EF184 pins 1 and 3
  25. aikido pre (5687 all in one) HUMM!!
  26. Question about tube datasheets
  27. EL84 "typical" amplifier
  28. Packing heat.
  29. Current rating for power transformer.
  30. Pentode Odd Behavior
  31. Lower Screen Voltage KT88, choke input + Cap input supply
  32. tannoy line trans
  33. Hi Gain Inverter for a PP amp
  34. Help looking for a project
  35. Dynaco MkIII bias flutter/stability...
  36. grid leak resistor?
  37. 16LS Stereo Tube Amplifier and how to connect to Baxandall Tube stereo tone control
  38. Fisher 800-C blown fuse
  39. cathode bias imbalance
  40. DIY M60 OTL Power Amplifiers
  41. Invisible gain...Aikido content
  42. Vacuum Tube SPICE Models
  43. Tamura interstages
  44. Jolida 502/302b power transformer.
  45. Bogen mo-200
  46. Phono Circuit Noise Factor
  47. Input impedance of this headphone amplifier ?
  48. D3a preamp.
  49. Newbie needs advice about DIY project please!
  50. PSUD and Off load Voltage
  51. Groovewatt-Valve RIAA Phono Preamp?
  52. Mullard EL84 Reissue?
  53. Push Pull amp power supply question
  54. Aikido all in one 5687 tube pre / louder in right Channel
  55. AUDIO RESEARCH SP-6B TUBE AMPLIFIER
  56. Tube Amp
  57. Preamp Pentode Screen Voltage and Gain
  58. AUDIBLE iLLUSION m3A
  59. What "Class" amp is this?
  60. DC coupling
  61. DuKane 1A831
  62. Thump sound at turn off of a power amp
  63. DHT AC heating 120hz phase canceling
  64. REVOX Model 40 amp. Need some hand holding please.
  65. heater imbalance fixable?
  66. Headphone amp
  67. Speech Amp for Modulator
  68. 2.1 channel el84 amp help
  69. Identify PC board in little amp...
  70. Spice model for GU50 (LT-Spice)
  71. Need schematic of Preamplifier AM 1065
  72. My Journey to build Tube power amplifier B300 SE
  73. Kondo M77
  74. tube datasheet gm
  75. xiang sheng best valves
  76. 6CN6/EL38 Replacement
  77. 4P55
  78. Possible or way to complicated?
  79. Jeff korneff SET 45
  80. P2p layout
  81. Heating tubes off mains voltage
  82. EL84 as preamp tube?
  83. Claus Byrith 4-30 PP with KT66
  84. biasing confusion
  85. Bogen HE-10 question
  86. Golden Tube Audio SE-100
  87. Nearing Conclusion of Line/Phono Project
  88. Bias Supply For Citation V?
  89. Tube Integrated Amp
  90. Help needed about a quad FM2 RF
  91. 21jv6 tube datasheet
  92. Interstage transformer theoretical phase change?
  93. Bootstrapping a high pass filter
  94. Help with hybrid Aikido amp! Suggestions please
  95. Need help with a Curcio Daniel 1
  96. Audio Tubes used in Industrial equipment?
  97. Hammond H1 Amp
  98. CCS assisted small signal UL pentode
  99. Dynaco ST35 B+
  100. Simple Tube Amp
  101. Portable tube amplifier
  102. Using the heater supply to get a DC source
  103. phono/aux switching problem
  104. What is the best EF86 in production at the moment
  105. 12AX7 / 12AT7 Mu Follower Phono
  106. Kreisler Stereo 6 speaker impedance
  107. A serviceable life.....
  108. TV 7 DU Tube info
  109. Twinings Tea Transformer Covers
  110. ECC88 with 12V heaters
  111. CXhange opa 627ap for an audio gd moon ?
  112. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  113. fatman itube mk1 sounds bad
  114. Chinese FD-71 tube is the russian GK-71 ?
  115. Leak stereo 20 diagnosis
  116. VTL
  117. Looking for tubed MC pre-pre
  118. Correct wiring types
  119. Couplates
  120. Op-Amp Like Line Preamp
  121. SE GU-50/6CB6 Pentode Design
  122. Pioneer SX34
  123. About metal film resistor in a tube tuner
  124. Looking for 52dBs or more MM phono
  125. Winter is coming... Time to start GM70 SE parafeed amp
  126. Doug Self: Wireless World Magazine Article Archive
  127. Relay short circuit
  128. EL34 PP oscillating
  129. Dynaco switchable diode/tube rec and driver tube mode
  130. CCS into a VR with Interstage question
  131. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  132. Rectifier and DC filtering relationship question
  133. Class A2 6JD5 Curves
  134. Motorola HS-839 Amp problem
  135. Active valve monitors?
  136. Did I get this load calculation right?
  137. Convergent SL1 original schematic
  138. Bleed down resistor
  139. How do I calculate resistor value in this schematic?
  140. Easy question about tube data sheet
  141. Tube regulator question
  142. Tube amp build for an 1st timer.
  143. Full music 101d input tube/valve
  144. EZ80 Voltage Question
  145. What the heck is this? Bulb?
  146. Audio Note Kit 1 Upgrade
  147. Will this work? (EL34 PP)
  148. Anthem 1 intergrated amp
  149. Tubes and the sun?
  150. Two triodes cascaded cathode follower?
  151. HIRAGA PREAMP PHONO + line
  152. OB2WA Radioactive???
  153. 9 pin tube socket pcb boards with screw terminals
  154. Hai I need a little help on designing a power supply
  155. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  156. Cleaning Up the Noise + Selector Switch Anomalie
  157. first tube preamp
  158. Dynaco Feedback
  159. Mundorf Silver Oil in hot 300B tube amplifier !!
  160. MULLARD 5-20 build with mods
  161. Choke loaded driver with small opt?
  162. Preamp Tube Bias and feedback
  163. New EL84 SE Amp PCB: The u-SE
  164. Question about Amp Theory
  165. Help needed for modifying DAC-opamp-tube circuit
  166. best way to start with tube amps
  167. Damper diode between C1 and L1
  168. Question about 'near' zero volt bias for low level stages
  169. Filmosound 179 - Should I even bother?
  170. Newbie question
  171. I think I know how it works, but can I get some help? (OddWatt PP)
  172. kt150
  173. As anyone considered black oxide???
  174. OTL question
  175. Headphone amp/preamp project.
  176. Comments or suggestions on this schematic?
  177. Twin Conn Organ 7868 Rebuild
  178. Favorite PP 6550 schematic?
  179. DECWARE Z BOX SCHEMATIC
  180. 6V6
  181. Need suggestion for eliminating noise from aluminum cover
  182. Kuba Serenade Stereo Console question.
  183. Help with tube interchangeability
  184. 6sn7(12au7)-6v6-300b
  185. Westinghouse tube amp MODEL V2508, conversion
  186. Voltage on the chassis, bad xformer?
  187. TubeCad blues...
  188. OPT as PSU filter???
  189. Tube Plate Voltage Timing
  190. Transformer grounding
  191. Two questions concerning bleed resistors
  192. Choke ratings and resistor values in choke input supply?
  193. Novar Spud :: A $200 sweep tube Spud with PCB
  194. Mid 50s 250/500/1000W Valve amp needs some repairs......
  195. I want to learn tubes and set up a workstation
  196. Pre amp wire up__new
  197. allied knight / rauland borg schematic needed
  198. Rollable Tubes
  199. n00b - Leave out the LEDs??
  200. Aikido 5687 all in one kit
  201. 6P13S - WHAT TO DO WITH
  202. el84 set amp for 90db-8ohm speaker?
  203. My first cap coupled 2 stage
  204. Dodd Buffer Tube Rolling?
  205. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  206. Olson-Morgan 6F6 Amplifier Info's needed.
  207. Newbie, Help with datasheet
  208. Conrad Johnson MV55 again - and Hi from a newb
  209. Interesting one piece EL34 PP tube amp diy pcb on ebay
  210. Low power stereo (dual mono) tube headphone amp
  211. 6EJ7's vs. 6JC6A
  212. EL34s Frying in my Cayin A50-T
  213. Grid Leak Amplifier with Unexpected Heater Resistor
  214. 7617 tube data
  215. preamplifier with huge amplification
  216. Counterpoint Amp Output
  217. Phase inverter Gremlins in Philips EL6431 amp
  218. Russian to English Translation needed
  219. Concertina type Phase inverters?
  220. Double C-Core output transformers
  221. Amplifier slew rate and DSD playback
  222. Bypassing volume pot on Cayin integrated tube amp
  223. Distortion when change into ecc83
  224. Mighty Midget Problem (One channel is louder)
  225. Mullard ECL86 3W Economical Amplifier
  226. Building a Baby Huey EL84 amp - might need some pointers
  227. Tranformer Choice
  228. Heathkit WM-5
  229. Aikido preamp power supply
  230. identify this traffo
  231. transformers
  232. parallel tube amplifier.
  233. What to do with a 12" x 8" enclosure?
  234. Odd filament winding
  235. transformers
  236. tube choices for an ST70
  237. "Arabella" - 6EM7 amplifier on Acacia
  238. CDE acquisition of Orange Drop Brand
  239. What is this inductor?
  240. Counterpoint SA-5000 upgrade
  241. Homebrew tube preamp noise
  242. Cathode follower with 12ax7
  243. CPC Japanese Tubes ?
  244. Cary SLA-70 with KT88 - worth building?
  245. Opinions or comments on schematic please
  246. Is this a tie point or a diode?
  247. Pushing EL36 ??
  248. Power Supply Chokes Question ?
  249. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  250. Knight 40 W Amp. tubes correct? Location?

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