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  1. Tube amp build for an 1st timer.
  2. Full music 101d input tube/valve
  3. EZ80 Voltage Question
  4. What the heck is this? Bulb?
  5. Audio Note Kit 1 Upgrade
  6. Will this work? (EL34 PP)
  7. Anthem 1 intergrated amp
  8. Tubes and the sun?
  9. Two triodes cascaded cathode follower?
  10. HIRAGA PREAMP PHONO + line
  11. OB2WA Radioactive???
  12. 9 pin tube socket pcb boards with screw terminals
  13. Hai I need a little help on designing a power supply
  14. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  15. Cleaning Up the Noise + Selector Switch Anomalie
  16. first tube preamp
  17. Rescuing a vessel : 1964 HICKOK 539C tube tester
  18. Dynaco Feedback
  19. Mundorf Silver Oil in hot 300B tube amplifier !!
  20. MULLARD 5-20 build with mods
  21. Choke loaded driver with small opt?
  22. Preamp Tube Bias and feedback
  23. New EL84 SE Amp PCB: The u-SE
  24. Question about Amp Theory
  25. Help needed for modifying DAC-opamp-tube circuit
  26. best way to start with tube amps
  27. Damper diode between C1 and L1
  28. Question about 'near' zero volt bias for low level stages
  29. Filmosound 179 - Should I even bother?
  30. Newbie question
  31. I think I know how it works, but can I get some help? (OddWatt PP)
  32. kt150
  33. As anyone considered black oxide???
  34. OTL question
  35. Headphone amp/preamp project.
  36. Comments or suggestions on this schematic?
  37. Twin Conn Organ 7868 Rebuild
  38. Favorite PP 6550 schematic?
  39. DECWARE Z BOX SCHEMATIC
  40. 6V6
  41. Need suggestion for eliminating noise from aluminum cover
  42. Kuba Serenade Stereo Console question.
  43. Help with tube interchangeability
  44. 6sn7(12au7)-6v6-300b
  45. Westinghouse tube amp MODEL V2508, conversion
  46. Voltage on the chassis, bad xformer?
  47. TubeCad blues...
  48. OPT as PSU filter???
  49. Tube Plate Voltage Timing
  50. Transformer grounding
  51. Two questions concerning bleed resistors
  52. Choke ratings and resistor values in choke input supply?
  53. Novar Spud :: A $200 sweep tube Spud with PCB
  54. Mid 50s 250/500/1000W Valve amp needs some repairs......
  55. I want to learn tubes and set up a workstation
  56. Pre amp wire up__new
  57. allied knight / rauland borg schematic needed
  58. Rollable Tubes
  59. n00b - Leave out the LEDs??
  60. Aikido 5687 all in one kit
  61. 6P13S - WHAT TO DO WITH
  62. el84 set amp for 90db-8ohm speaker?
  63. My first cap coupled 2 stage
  64. Dodd Buffer Tube Rolling?
  65. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  66. Olson-Morgan 6F6 Amplifier Info's needed.
  67. Newbie, Help with datasheet
  68. Conrad Johnson MV55 again - and Hi from a newb
  69. Interesting one piece EL34 PP tube amp diy pcb on ebay
  70. Low power stereo (dual mono) tube headphone amp
  71. 6EJ7's vs. 6JC6A
  72. EL34s Frying in my Cayin A50-T
  73. Grid Leak Amplifier with Unexpected Heater Resistor
  74. 7617 tube data
  75. preamplifier with huge amplification
  76. Counterpoint Amp Output
  77. Phase inverter Gremlins in Philips EL6431 amp
  78. Russian to English Translation needed
  79. Concertina type Phase inverters?
  80. Double C-Core output transformers
  81. Amplifier slew rate and DSD playback
  82. Bypassing volume pot on Cayin integrated tube amp
  83. Distortion when change into ecc83
  84. Mighty Midget Problem (One channel is louder)
  85. Mullard ECL86 3W Economical Amplifier
  86. Building a Baby Huey EL84 amp - might need some pointers
  87. Tranformer Choice
  88. Heathkit WM-5
  89. Aikido preamp power supply
  90. identify this traffo
  91. transformers
  92. parallel tube amplifier.
  93. What to do with a 12" x 8" enclosure?
  94. Odd filament winding
  95. transformers
  96. tube choices for an ST70
  97. "Arabella" - 6EM7 amplifier on Acacia
  98. CDE acquisition of Orange Drop Brand
  99. What is this inductor?
  100. Counterpoint SA-5000 upgrade
  101. Homebrew tube preamp noise
  102. Cathode follower with 12ax7
  103. CPC Japanese Tubes ?
  104. Cary SLA-70 with KT88 - worth building?
  105. Opinions or comments on schematic please
  106. Is this a tie point or a diode?
  107. Pushing EL36 ??
  108. Power Supply Chokes Question ?
  109. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  110. Knight 40 W Amp. tubes correct? Location?
  111. Push-Pull Output Transformer with Cathode Feedback Winding?
  112. 300b amp help
  113. Help with Dynaco value
  114. INTERSTAGE 2A3/211
  115. TCJ Push Pull Amp Calculator question
  116. winter project KT88 PP
  117. En Vogue Darling SRPP SE SRPP tube amp will this work?
  118. Shunt regulation for HT
  119. Unison research simply two, what gridvoltage for EL34?
  120. Finally Measured my Tube Preamp
  121. Aikido octal stereo problems
  122. Philips 5 pin IEC connector in AG9016
  123. Dynaclone OPT replacement - less power than expected
  124. 2 ECL 805 SE
  125. All DHT headphone amp with 4P1L & 307A
  126. cary audio rocket 88 tube amp
  127. Compactron Driver Dynaco MarkIII PCB Design.
  128. Paralelling pentodes ?
  129. KT120 Single Ended Ultralinear
  130. Does a PCL805 glow red at its maximum rating?
  131. V1 Noise Reduction Choices
  132. full pentode ppp
  133. Input transformer question
  134. Is this Tesla ECC803S real or fake?
  135. Michaelson and Austin TVA-1
  136. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  137. 6EB8\6GN8 P-P Output 2*12w Class-B
  138. B+ regulator for KT88 amplifier
  139. Help figuring out wind/hiss
  140. 12A07 low voltage preamp
  141. Buying guideline for 6c33c
  142. New 211/VT4c shootout
  143. GM70 Output transformer
  144. OTL 2013
  145. Octal Preamp Triode Thoughts (IDHT's)
  146. Wrong tube and pin wiring
  147. New Production Tube If Transformers from Germany
  148. Direct connected madness
  149. RH84 build & quite a few questions...
  150. Output tansformer Nuvistor 7587/7985
  151. Tube preamp kits
  152. Capacitor query L1 audio innovation pre-amp
  153. Someone Told Me This Wouldn't Work?
  154. How to "do" a FM Multipath Monitor
  155. EF86 pins 2 & 7
  156. Welborne 300B DRD amp
  157. My First Tube Project: 6N16B
  158. Triode mod with G2, G3 connect to anode
  159. Valve mic cable diy
  160. Toroidal transformer is bad
  161. EABC80 and the double diode triode?
  162. Frequent Question -Golden Tube Audio 300B monos schematic??
  163. Transformer Terminal Designators
  164. Slew rate limiting in output stage
  165. Sonic Frontiers Line 2 - no line level output
  166. KT88 Ultralinear?
  167. Help with 12AT7 CCDA - EL34 SE Amp Design?
  168. THE FINAL AMP
  169. need 6SN7/6H8C reccom. for amp
  170. 211 parallel amp (made in Iran)
  171. Changing to twisted pair heater from one side grounded
  172. Choke input supply. Cap question.
  173. tube rectifier 6AX4GT
  174. RS1003 triode mode Spice models
  175. Firestone 6V6 Monoblock Problems
  176. Lundahl Output transformers?
  177. GMI-6 / GMI-6-1
  178. New power transformer for Millett's DCPP amp,now available at EDCOR
  179. Tuned Circuit?
  180. remote lead for tubes
  181. Building a Stereo EL84 auto bias PP tube amp
  182. Tube conversion of differential to single ended signal
  183. A transconductance tube amplifier
  184. Unknown Tube
  185. 12vdc to 150vac
  186. When is a tube too weak?
  187. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  188. Biasing aBerning EA-230
  189. Aikido Noob - Please Help!
  190. Wiring Capacitors in Series
  191. Dynaco ST35 power transformer
  192. Valve Pre > Intergrated amp
  193. Whats the difference RH84 or Mullard 3-3?
  194. Ultra-Linear SE EL84?
  195. Self balancing pp using ccs question
  196. Help: How To Select Schottky Rectifer Diode
  197. 6550 plate resistance in triode mode? Calculate?
  198. making 6sj7 have same gain as 6sl7
  199. Thick Film resistors?
  200. Mounting position EL84
  201. Curve Tracer: Which One To Buy, What To Consider, Options ?
  202. 71A Tube Filament: AC or DC ?
  203. My Current Line + Phono Combo
  204. What is better than one audioromy M-828A FU29?
  205. Mazda tube
  206. Aikido selectable gain
  207. Preamp power supply
  208. Has anyone used CV9 tubes in a pp design
  209. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  210. BALANCED AUDIO VK 5 VK20
  211. Output transformer computation
  212. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  213. Input Attenuators
  214. new build SE to EL 508
  215. found this on kickstarter
  216. SE Output Transformer question
  217. Safety of DC-coupled inputs
  218. Found some old tubes.
  219. Presence control
  220. Fixing an amp head - bad tubes?
  221. EL84 what factory produced it?
  222. Trio Corp 300b fake?
  223. Cheap triode class A 3Watt + assembled/kit you know ?
  224. Elekit tu 879s upgrades
  225. EZ80 Choke Input Max Capacitance
  226. Correct measurement of filament voltage.
  227. Who put the "half" in the Koren SPICE equation
  228. 5Y3 tube rectifier
  229. Triode or ultraliner connected ?
  230. What is the "Tube Sound"?
  231. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  232. Which KT88 ?
  233. Why make a tube amp that sounds like a SS amp?
  234. Mark VI power Supply
  235. audioromy fu29 - not working, repair or scrap?
  236. Valve amp questions for someone new to them.
  237. Driving Parallel Tubes
  238. Matching quad set
  239. Anyone listen a 46 in UL mode ?
  240. McIntosh MC30 vs. Fisher 80-AZ
  241. Voltage Divider at input to Power Amp
  242. Checking EL84 with Eico 625
  243. Dynaclone ST70 6F2 Alternative
  244. Nobsound MS10D
  245. Need Help - Monoblock Power Amplifier EL 34
  246. Replace output transformers in Dynaco ST70
  247. 6P14P-EV in my Simple P-P
  248. Help finding a new tube headphone amp
  249. Cost of building from scratch
  250. Help with loadlines in p.s.e.

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