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  1. Correct wiring types
  2. Couplates
  3. Op-Amp Like Line Preamp
  4. SE GU-50/6CB6 Pentode Design
  5. Pioneer SX34
  6. About metal film resistor in a tube tuner
  7. Looking for 52dBs or more MM phono
  8. Winter is coming... Time to start GM70 SE parafeed amp
  9. Doug Self: Wireless World Magazine Article Archive
  10. Relay short circuit
  11. EL34 PP oscillating
  12. Dynaco switchable diode/tube rec and driver tube mode
  13. CCS into a VR with Interstage question
  14. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  15. Rectifier and DC filtering relationship question
  16. Class A2 6JD5 Curves
  17. Motorola HS-839 Amp problem
  18. Active valve monitors?
  19. Did I get this load calculation right?
  20. Convergent SL1 original schematic
  21. Bleed down resistor
  22. How do I calculate resistor value in this schematic?
  23. Easy question about tube data sheet
  24. Tube regulator question
  25. Tube amp build for an 1st timer.
  26. Full music 101d input tube/valve
  27. EZ80 Voltage Question
  28. What the heck is this? Bulb?
  29. Audio Note Kit 1 Upgrade
  30. Will this work? (EL34 PP)
  31. Anthem 1 intergrated amp
  32. Tubes and the sun?
  33. Two triodes cascaded cathode follower?
  34. HIRAGA PREAMP PHONO + line
  35. OB2WA Radioactive???
  36. 9 pin tube socket pcb boards with screw terminals
  37. Hai I need a little help on designing a power supply
  38. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  39. Cleaning Up the Noise + Selector Switch Anomalie
  40. first tube preamp
  41. Rescuing a vessel : 1964 HICKOK 539C tube tester
  42. Dynaco Feedback
  43. Mundorf Silver Oil in hot 300B tube amplifier !!
  44. MULLARD 5-20 build with mods
  45. Choke loaded driver with small opt?
  46. Preamp Tube Bias and feedback
  47. Capacitor replacement option
  48. New EL84 SE Amp PCB: The u-SE
  49. Question about Amp Theory
  50. Help needed for modifying DAC-opamp-tube circuit
  51. best way to start with tube amps
  52. Damper diode between C1 and L1
  53. Question about 'near' zero volt bias for low level stages
  54. Filmosound 179 - Should I even bother?
  55. Newbie question
  56. I think I know how it works, but can I get some help? (OddWatt PP)
  57. kt150
  58. As anyone considered black oxide???
  59. OTL question
  60. Headphone amp/preamp project.
  61. Comments or suggestions on this schematic?
  62. Twin Conn Organ 7868 Rebuild
  63. Favorite PP 6550 schematic?
  64. DECWARE Z BOX SCHEMATIC
  65. 6V6
  66. Need suggestion for eliminating noise from aluminum cover
  67. Kuba Serenade Stereo Console question.
  68. Help with tube interchangeability
  69. 6sn7(12au7)-6v6-300b
  70. Westinghouse tube amp MODEL V2508, conversion
  71. Voltage on the chassis, bad xformer?
  72. TubeCad blues...
  73. OPT as PSU filter???
  74. Tube Plate Voltage Timing
  75. Transformer grounding
  76. Two questions concerning bleed resistors
  77. Choke ratings and resistor values in choke input supply?
  78. Novar Spud :: A $200 sweep tube Spud with PCB
  79. Mid 50s 250/500/1000W Valve amp needs some repairs......
  80. I want to learn tubes and set up a workstation
  81. Pre amp wire up__new
  82. allied knight / rauland borg schematic needed
  83. Rollable Tubes
  84. n00b - Leave out the LEDs??
  85. Aikido 5687 all in one kit
  86. 6P13S - WHAT TO DO WITH
  87. el84 set amp for 90db-8ohm speaker?
  88. My first cap coupled 2 stage
  89. Dodd Buffer Tube Rolling?
  90. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  91. Olson-Morgan 6F6 Amplifier Info's needed.
  92. Newbie, Help with datasheet
  93. Conrad Johnson MV55 again - and Hi from a newb
  94. Interesting one piece EL34 PP tube amp diy pcb on ebay
  95. Low power stereo (dual mono) tube headphone amp
  96. 6EJ7's vs. 6JC6A
  97. EL34s Frying in my Cayin A50-T
  98. Grid Leak Amplifier with Unexpected Heater Resistor
  99. 7617 tube data
  100. preamplifier with huge amplification
  101. Counterpoint Amp Output
  102. Phase inverter Gremlins in Philips EL6431 amp
  103. Russian to English Translation needed
  104. Concertina type Phase inverters?
  105. Double C-Core output transformers
  106. Amplifier slew rate and DSD playback
  107. Bypassing volume pot on Cayin integrated tube amp
  108. Distortion when change into ecc83
  109. Mighty Midget Problem (One channel is louder)
  110. Mullard ECL86 3W Economical Amplifier
  111. Building a Baby Huey EL84 amp - might need some pointers
  112. Tranformer Choice
  113. Heathkit WM-5
  114. Aikido preamp power supply
  115. identify this traffo
  116. transformers
  117. parallel tube amplifier.
  118. What to do with a 12" x 8" enclosure?
  119. Odd filament winding
  120. transformers
  121. tube choices for an ST70
  122. "Arabella" - 6EM7 amplifier on Acacia
  123. CDE acquisition of Orange Drop Brand
  124. What is this inductor?
  125. Counterpoint SA-5000 upgrade
  126. Homebrew tube preamp noise
  127. Cathode follower with 12ax7
  128. CPC Japanese Tubes ?
  129. Cary SLA-70 with KT88 - worth building?
  130. Opinions or comments on schematic please
  131. Is this a tie point or a diode?
  132. Need Pinout Help, Silvertone Organ Amp
  133. Pushing EL36 ??
  134. Power Supply Chokes Question ?
  135. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  136. Knight 40 W Amp. tubes correct? Location?
  137. Push-Pull Output Transformer with Cathode Feedback Winding?
  138. 300b amp help
  139. Help with Dynaco value
  140. INTERSTAGE 2A3/211
  141. TCJ Push Pull Amp Calculator question
  142. winter project KT88 PP
  143. En Vogue Darling SRPP SE SRPP tube amp will this work?
  144. Shunt regulation for HT
  145. Unison research simply two, what gridvoltage for EL34?
  146. Finally Measured my Tube Preamp
  147. Aikido octal stereo problems
  148. Philips 5 pin IEC connector in AG9016
  149. Dynaclone OPT replacement - less power than expected
  150. 2 ECL 805 SE
  151. All DHT headphone amp with 4P1L & 307A
  152. cary audio rocket 88 tube amp
  153. Compactron Driver Dynaco MarkIII PCB Design.
  154. Paralelling pentodes ?
  155. KT120 Single Ended Ultralinear
  156. Does a PCL805 glow red at its maximum rating?
  157. V1 Noise Reduction Choices
  158. full pentode ppp
  159. Input transformer question
  160. Is this Tesla ECC803S real or fake?
  161. Michaelson and Austin TVA-1
  162. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  163. 6EB8\6GN8 P-P Output 2*12w Class-B
  164. B+ regulator for KT88 amplifier
  165. Help figuring out wind/hiss
  166. 12A07 low voltage preamp
  167. Buying guideline for 6c33c
  168. New 211/VT4c shootout
  169. GM70 Output transformer
  170. OTL 2013
  171. Octal Preamp Triode Thoughts (IDHT's)
  172. Wrong tube and pin wiring
  173. New Production Tube If Transformers from Germany
  174. Vishay TX2575 resistor placement
  175. Direct connected madness
  176. RH84 build & quite a few questions...
  177. Tube preamp kits
  178. Capacitor query L1 audio innovation pre-amp
  179. Someone Told Me This Wouldn't Work?
  180. How to "do" a FM Multipath Monitor
  181. EF86 pins 2 & 7
  182. Welborne 300B DRD amp
  183. My First Tube Project: 6N16B
  184. Triode mod with G2, G3 connect to anode
  185. Valve mic cable diy
  186. Toroidal transformer is bad
  187. Coupling caps suggestions
  188. EABC80 and the double diode triode?
  189. Frequent Question -Golden Tube Audio 300B monos schematic??
  190. Transformer Terminal Designators
  191. Slew rate limiting in output stage
  192. Sonic Frontiers Line 2 - no line level output
  193. KT88 Ultralinear?
  194. Help with 12AT7 CCDA - EL34 SE Amp Design?
  195. THE FINAL AMP
  196. need 6SN7/6H8C reccom. for amp
  197. 211 parallel amp (made in Iran)
  198. Changing to twisted pair heater from one side grounded
  199. Choke input supply. Cap question.
  200. tube rectifier 6AX4GT
  201. RS1003 triode mode Spice models
  202. Firestone 6V6 Monoblock Problems
  203. Lundahl Output transformers?
  204. GMI-6 / GMI-6-1
  205. New power transformer for Millett's DCPP amp,now available at EDCOR
  206. Tuned Circuit?
  207. remote lead for tubes
  208. Building a Stereo EL84 auto bias PP tube amp
  209. Tube conversion of differential to single ended signal
  210. A transconductance tube amplifier
  211. Unknown Tube
  212. 12vdc to 150vac
  213. When is a tube too weak?
  214. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  215. Biasing aBerning EA-230
  216. Aikido Noob - Please Help!
  217. Wiring Capacitors in Series
  218. Dynaco ST35 power transformer
  219. sunn 200s diagnosis?
  220. Individual Coupling Caps
  221. Valve Pre > Intergrated amp
  222. Whats the difference RH84 or Mullard 3-3?
  223. Ultra-Linear SE EL84?
  224. Self balancing pp using ccs question
  225. Help: How To Select Schottky Rectifer Diode
  226. 6550 plate resistance in triode mode? Calculate?
  227. making 6sj7 have same gain as 6sl7
  228. Thick Film resistors?
  229. Mounting position EL84
  230. Curve Tracer: Which One To Buy, What To Consider, Options ?
  231. 71A Tube Filament: AC or DC ?
  232. My Current Line + Phono Combo
  233. What is better than one audioromy M-828A FU29?
  234. Mazda tube
  235. Aikido selectable gain
  236. Preamp power supply
  237. Has anyone used CV9 tubes in a pp design
  238. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  239. BALANCED AUDIO VK 5 VK20
  240. Output transformer computation
  241. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  242. Input Attenuators
  243. new build SE to EL 508
  244. found this on kickstarter
  245. SE Output Transformer question
  246. Safety of DC-coupled inputs
  247. Found some old tubes.
  248. Presence control
  249. Fixing an amp head - bad tubes?
  250. EL84 what factory produced it?

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