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  1. About metal film resistor in a tube tuner
  2. Looking for 52dBs or more MM phono
  3. Winter is coming... Time to start GM70 SE parafeed amp
  4. Doug Self: Wireless World Magazine Article Archive
  5. Relay short circuit
  6. EL34 PP oscillating
  7. Dynaco switchable diode/tube rec and driver tube mode
  8. CCS into a VR with Interstage question
  9. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  10. Rectifier and DC filtering relationship question
  11. Class A2 6JD5 Curves
  12. Motorola HS-839 Amp problem
  13. Active valve monitors?
  14. Did I get this load calculation right?
  15. Convergent SL1 original schematic
  16. Bleed down resistor
  17. How do I calculate resistor value in this schematic?
  18. Easy question about tube data sheet
  19. Tube regulator question
  20. Tube amp build for an 1st timer.
  21. Full music 101d input tube/valve
  22. EZ80 Voltage Question
  23. What the heck is this? Bulb?
  24. Audio Note Kit 1 Upgrade
  25. Will this work? (EL34 PP)
  26. Anthem 1 intergrated amp
  27. Tubes and the sun?
  28. Two triodes cascaded cathode follower?
  29. HIRAGA PREAMP PHONO + line
  30. OB2WA Radioactive???
  31. 9 pin tube socket pcb boards with screw terminals
  32. Hai I need a little help on designing a power supply
  33. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  34. Cleaning Up the Noise + Selector Switch Anomalie
  35. first tube preamp
  36. Dynaco Feedback
  37. Mundorf Silver Oil in hot 300B tube amplifier !!
  38. MULLARD 5-20 build with mods
  39. Choke loaded driver with small opt?
  40. Preamp Tube Bias and feedback
  41. New EL84 SE Amp PCB: The u-SE
  42. Question about Amp Theory
  43. Help needed for modifying DAC-opamp-tube circuit
  44. best way to start with tube amps
  45. Damper diode between C1 and L1
  46. Question about 'near' zero volt bias for low level stages
  47. Filmosound 179 - Should I even bother?
  48. Newbie question
  49. I think I know how it works, but can I get some help? (OddWatt PP)
  50. kt150
  51. As anyone considered black oxide???
  52. OTL question
  53. Headphone amp/preamp project.
  54. Comments or suggestions on this schematic?
  55. Twin Conn Organ 7868 Rebuild
  56. Favorite PP 6550 schematic?
  57. DECWARE Z BOX SCHEMATIC
  58. 6V6
  59. Need suggestion for eliminating noise from aluminum cover
  60. Kuba Serenade Stereo Console question.
  61. Help with tube interchangeability
  62. 6sn7(12au7)-6v6-300b
  63. Westinghouse tube amp MODEL V2508, conversion
  64. Voltage on the chassis, bad xformer?
  65. TubeCad blues...
  66. OPT as PSU filter???
  67. Tube Plate Voltage Timing
  68. Transformer grounding
  69. Two questions concerning bleed resistors
  70. Choke ratings and resistor values in choke input supply?
  71. Novar Spud :: A $200 sweep tube Spud with PCB
  72. Mid 50s 250/500/1000W Valve amp needs some repairs......
  73. I want to learn tubes and set up a workstation
  74. Pre amp wire up__new
  75. allied knight / rauland borg schematic needed
  76. Rollable Tubes
  77. n00b - Leave out the LEDs??
  78. Aikido 5687 all in one kit
  79. 6P13S - WHAT TO DO WITH
  80. el84 set amp for 90db-8ohm speaker?
  81. My first cap coupled 2 stage
  82. Dodd Buffer Tube Rolling?
  83. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  84. Olson-Morgan 6F6 Amplifier Info's needed.
  85. Newbie, Help with datasheet
  86. Conrad Johnson MV55 again - and Hi from a newb
  87. Interesting one piece EL34 PP tube amp diy pcb on ebay
  88. Low power stereo (dual mono) tube headphone amp
  89. 6EJ7's vs. 6JC6A
  90. EL34s Frying in my Cayin A50-T
  91. Grid Leak Amplifier with Unexpected Heater Resistor
  92. 7617 tube data
  93. preamplifier with huge amplification
  94. Counterpoint Amp Output
  95. Phase inverter Gremlins in Philips EL6431 amp
  96. Russian to English Translation needed
  97. Concertina type Phase inverters?
  98. Double C-Core output transformers
  99. Amplifier slew rate and DSD playback
  100. Bypassing volume pot on Cayin integrated tube amp
  101. Distortion when change into ecc83
  102. Mighty Midget Problem (One channel is louder)
  103. Mullard ECL86 3W Economical Amplifier
  104. Building a Baby Huey EL84 amp - might need some pointers
  105. Tranformer Choice
  106. Heathkit WM-5
  107. Aikido preamp power supply
  108. identify this traffo
  109. transformers
  110. parallel tube amplifier.
  111. What to do with a 12" x 8" enclosure?
  112. Odd filament winding
  113. transformers
  114. tube choices for an ST70
  115. "Arabella" - 6EM7 amplifier on Acacia
  116. CDE acquisition of Orange Drop Brand
  117. What is this inductor?
  118. Counterpoint SA-5000 upgrade
  119. Homebrew tube preamp noise
  120. Cathode follower with 12ax7
  121. CPC Japanese Tubes ?
  122. Cary SLA-70 with KT88 - worth building?
  123. Opinions or comments on schematic please
  124. Is this a tie point or a diode?
  125. Pushing EL36 ??
  126. Power Supply Chokes Question ?
  127. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  128. Knight 40 W Amp. tubes correct? Location?
  129. Push-Pull Output Transformer with Cathode Feedback Winding?
  130. 300b amp help
  131. Help with Dynaco value
  132. INTERSTAGE 2A3/211
  133. TCJ Push Pull Amp Calculator question
  134. winter project KT88 PP
  135. En Vogue Darling SRPP SE SRPP tube amp will this work?
  136. Shunt regulation for HT
  137. Unison research simply two, what gridvoltage for EL34?
  138. Finally Measured my Tube Preamp
  139. Aikido octal stereo problems
  140. Philips 5 pin IEC connector in AG9016
  141. Dynaclone OPT replacement - less power than expected
  142. 2 ECL 805 SE
  143. All DHT headphone amp with 4P1L & 307A
  144. cary audio rocket 88 tube amp
  145. Compactron Driver Dynaco MarkIII PCB Design.
  146. Paralelling pentodes ?
  147. KT120 Single Ended Ultralinear
  148. Does a PCL805 glow red at its maximum rating?
  149. V1 Noise Reduction Choices
  150. full pentode ppp
  151. Input transformer question
  152. Is this Tesla ECC803S real or fake?
  153. Michaelson and Austin TVA-1
  154. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  155. 6EB8\6GN8 P-P Output 2*12w Class-B
  156. B+ regulator for KT88 amplifier
  157. Help figuring out wind/hiss
  158. 12A07 low voltage preamp
  159. Buying guideline for 6c33c
  160. New 211/VT4c shootout
  161. GM70 Output transformer
  162. OTL 2013
  163. Octal Preamp Triode Thoughts (IDHT's)
  164. Wrong tube and pin wiring
  165. New Production Tube If Transformers from Germany
  166. Direct connected madness
  167. RH84 build & quite a few questions...
  168. Output tansformer Nuvistor 7587/7985
  169. Tube preamp kits
  170. Capacitor query L1 audio innovation pre-amp
  171. Someone Told Me This Wouldn't Work?
  172. How to "do" a FM Multipath Monitor
  173. EF86 pins 2 & 7
  174. Welborne 300B DRD amp
  175. My First Tube Project: 6N16B
  176. Triode mod with G2, G3 connect to anode
  177. Valve mic cable diy
  178. Toroidal transformer is bad
  179. EABC80 and the double diode triode?
  180. Frequent Question -Golden Tube Audio 300B monos schematic??
  181. Transformer Terminal Designators
  182. Slew rate limiting in output stage
  183. Sonic Frontiers Line 2 - no line level output
  184. KT88 Ultralinear?
  185. Help with 12AT7 CCDA - EL34 SE Amp Design?
  186. THE FINAL AMP
  187. need 6SN7/6H8C reccom. for amp
  188. 211 parallel amp (made in Iran)
  189. Changing to twisted pair heater from one side grounded
  190. Choke input supply. Cap question.
  191. tube rectifier 6AX4GT
  192. RS1003 triode mode Spice models
  193. Firestone 6V6 Monoblock Problems
  194. Lundahl Output transformers?
  195. GMI-6 / GMI-6-1
  196. New power transformer for Millett's DCPP amp,now available at EDCOR
  197. Tuned Circuit?
  198. remote lead for tubes
  199. Building a Stereo EL84 auto bias PP tube amp
  200. Tube conversion of differential to single ended signal
  201. A transconductance tube amplifier
  202. Unknown Tube
  203. 12vdc to 150vac
  204. When is a tube too weak?
  205. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  206. Biasing aBerning EA-230
  207. Aikido Noob - Please Help!
  208. Wiring Capacitors in Series
  209. Dynaco ST35 power transformer
  210. Valve Pre > Intergrated amp
  211. Whats the difference RH84 or Mullard 3-3?
  212. Ultra-Linear SE EL84?
  213. Self balancing pp using ccs question
  214. Help: How To Select Schottky Rectifer Diode
  215. 6550 plate resistance in triode mode? Calculate?
  216. making 6sj7 have same gain as 6sl7
  217. Mounting position EL84
  218. Curve Tracer: Which One To Buy, What To Consider, Options ?
  219. 71A Tube Filament: AC or DC ?
  220. My Current Line + Phono Combo
  221. What is better than one audioromy M-828A FU29?
  222. Mazda tube
  223. Aikido selectable gain
  224. Preamp power supply
  225. Has anyone used CV9 tubes in a pp design
  226. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  227. BALANCED AUDIO VK 5 VK20
  228. Output transformer computation
  229. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  230. Input Attenuators
  231. new build SE to EL 508
  232. found this on kickstarter
  233. SE Output Transformer question
  234. Safety of DC-coupled inputs
  235. Found some old tubes.
  236. Presence control
  237. Fixing an amp head - bad tubes?
  238. EL84 what factory produced it?
  239. Trio Corp 300b fake?
  240. Cheap triode class A 3Watt + assembled/kit you know ?
  241. Elekit tu 879s upgrades
  242. EZ80 Choke Input Max Capacitance
  243. Correct measurement of filament voltage.
  244. Who put the "half" in the Koren SPICE equation
  245. 5Y3 tube rectifier
  246. Triode or ultraliner connected ?
  247. What is the "Tube Sound"?
  248. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  249. Which KT88 ?
  250. Why make a tube amp that sounds like a SS amp?

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