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  1. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  2. Olson-Morgan 6F6 Amplifier Info's needed.
  3. Newbie, Help with datasheet
  4. Conrad Johnson MV55 again - and Hi from a newb
  5. Interesting one piece EL34 PP tube amp diy pcb on ebay
  6. Low power stereo (dual mono) tube headphone amp
  7. 6EJ7's vs. 6JC6A
  8. EL34s Frying in my Cayin A50-T
  9. Grid Leak Amplifier with Unexpected Heater Resistor
  10. 7617 tube data
  11. preamplifier with huge amplification
  12. Counterpoint Amp Output
  13. Phase inverter Gremlins in Philips EL6431 amp
  14. Russian to English Translation needed
  15. Concertina type Phase inverters?
  16. Double C-Core output transformers
  17. Amplifier slew rate and DSD playback
  18. Bypassing volume pot on Cayin integrated tube amp
  19. Distortion when change into ecc83
  20. Mighty Midget Problem (One channel is louder)
  21. Mullard ECL86 3W Economical Amplifier
  22. Building a Baby Huey EL84 amp - might need some pointers
  23. Tranformer Choice
  24. Heathkit WM-5
  25. Aikido preamp power supply
  26. identify this traffo
  27. transformers
  28. parallel tube amplifier.
  29. What to do with a 12" x 8" enclosure?
  30. Odd filament winding
  31. transformers
  32. tube choices for an ST70
  33. "Arabella" - 6EM7 amplifier on Acacia
  34. CDE acquisition of Orange Drop Brand
  35. What is this inductor?
  36. Counterpoint SA-5000 upgrade
  37. Homebrew tube preamp noise
  38. Cathode follower with 12ax7
  39. CPC Japanese Tubes ?
  40. Cary SLA-70 with KT88 - worth building?
  41. Opinions or comments on schematic please
  42. Is this a tie point or a diode?
  43. Need Pinout Help, Silvertone Organ Amp
  44. Pushing EL36 ??
  45. Power Supply Chokes Question ?
  46. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  47. Knight 40 W Amp. tubes correct? Location?
  48. Push-Pull Output Transformer with Cathode Feedback Winding?
  49. 300b amp help
  50. Help with Dynaco value
  51. INTERSTAGE 2A3/211
  52. TCJ Push Pull Amp Calculator question
  53. winter project KT88 PP
  54. En Vogue Darling SRPP SE SRPP tube amp will this work?
  55. Shunt regulation for HT
  56. Unison research simply two, what gridvoltage for EL34?
  57. Finally Measured my Tube Preamp
  58. Aikido octal stereo problems
  59. Philips 5 pin IEC connector in AG9016
  60. Dynaclone OPT replacement - less power than expected
  61. 2 ECL 805 SE
  62. All DHT headphone amp with 4P1L & 307A
  63. cary audio rocket 88 tube amp
  64. Compactron Driver Dynaco MarkIII PCB Design.
  65. Paralelling pentodes ?
  66. KT120 Single Ended Ultralinear
  67. Does a PCL805 glow red at its maximum rating?
  68. V1 Noise Reduction Choices
  69. full pentode ppp
  70. Input transformer question
  71. Is this Tesla ECC803S real or fake?
  72. Michaelson and Austin TVA-1
  73. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  74. 6EB8\6GN8 P-P Output 2*12w Class-B
  75. B+ regulator for KT88 amplifier
  76. Help figuring out wind/hiss
  77. 12A07 low voltage preamp
  78. Buying guideline for 6c33c
  79. New 211/VT4c shootout
  80. GM70 Output transformer
  81. OTL 2013
  82. Octal Preamp Triode Thoughts (IDHT's)
  83. Wrong tube and pin wiring
  84. New Production Tube If Transformers from Germany
  85. Vishay TX2575 resistor placement
  86. Direct connected madness
  87. RH84 build & quite a few questions...
  88. Tube preamp kits
  89. Capacitor query L1 audio innovation pre-amp
  90. Someone Told Me This Wouldn't Work?
  91. How to "do" a FM Multipath Monitor
  92. EF86 pins 2 & 7
  93. Welborne 300B DRD amp
  94. My First Tube Project: 6N16B
  95. Triode mod with G2, G3 connect to anode
  96. Valve mic cable diy
  97. Toroidal transformer is bad
  98. Coupling caps suggestions
  99. EABC80 and the double diode triode?
  100. Frequent Question -Golden Tube Audio 300B monos schematic??
  101. Transformer Terminal Designators
  102. Slew rate limiting in output stage
  103. Sonic Frontiers Line 2 - no line level output
  104. KT88 Ultralinear?
  105. Help with 12AT7 CCDA - EL34 SE Amp Design?
  106. THE FINAL AMP
  107. need 6SN7/6H8C reccom. for amp
  108. 211 parallel amp (made in Iran)
  109. Changing to twisted pair heater from one side grounded
  110. Choke input supply. Cap question.
  111. tube rectifier 6AX4GT
  112. RS1003 triode mode Spice models
  113. Firestone 6V6 Monoblock Problems
  114. Lundahl Output transformers?
  115. GMI-6 / GMI-6-1
  116. New power transformer for Millett's DCPP amp,now available at EDCOR
  117. Tuned Circuit?
  118. remote lead for tubes
  119. Building a Stereo EL84 auto bias PP tube amp
  120. Tube conversion of differential to single ended signal
  121. A transconductance tube amplifier
  122. Unknown Tube
  123. 12vdc to 150vac
  124. When is a tube too weak?
  125. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  126. Biasing aBerning EA-230
  127. Aikido Noob - Please Help!
  128. Wiring Capacitors in Series
  129. Dynaco ST35 power transformer
  130. sunn 200s diagnosis?
  131. Individual Coupling Caps
  132. Valve Pre > Intergrated amp
  133. Whats the difference RH84 or Mullard 3-3?
  134. Ultra-Linear SE EL84?
  135. Self balancing pp using ccs question
  136. Help: How To Select Schottky Rectifer Diode
  137. 6550 plate resistance in triode mode? Calculate?
  138. making 6sj7 have same gain as 6sl7
  139. Thick Film resistors?
  140. Mounting position EL84
  141. Curve Tracer: Which One To Buy, What To Consider, Options ?
  142. 71A Tube Filament: AC or DC ?
  143. My Current Line + Phono Combo
  144. What is better than one audioromy M-828A FU29?
  145. Mazda tube
  146. Aikido selectable gain
  147. Preamp power supply
  148. Has anyone used CV9 tubes in a pp design
  149. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  150. BALANCED AUDIO VK 5 VK20
  151. Output transformer computation
  152. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  153. Input Attenuators
  154. new build SE to EL 508
  155. found this on kickstarter
  156. SE Output Transformer question
  157. Safety of DC-coupled inputs
  158. Found some old tubes.
  159. Presence control
  160. lafayette pa 622 -> Guitar amp conversion
  161. Fixing an amp head - bad tubes?
  162. EL84 what factory produced it?
  163. Trio Corp 300b fake?
  164. Cheap triode class A 3Watt + assembled/kit you know ?
  165. Elekit tu 879s upgrades
  166. EZ80 Choke Input Max Capacitance
  167. Correct measurement of filament voltage.
  168. Who put the "half" in the Koren SPICE equation
  169. 5Y3 tube rectifier
  170. Triode or ultraliner connected ?
  171. What is the "Tube Sound"?
  172. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  173. Which KT88 ?
  174. Why make a tube amp that sounds like a SS amp?
  175. Mark VI power Supply
  176. audioromy fu29 - not working, repair or scrap?
  177. Valve amp questions for someone new to them.
  178. Driving Parallel Tubes
  179. Matching quad set
  180. Anyone listen a 46 in UL mode ?
  181. McIntosh MC30 vs. Fisher 80-AZ
  182. Voltage Divider at input to Power Amp
  183. Checking EL84 with Eico 625
  184. Dynaclone ST70 6F2 Alternative
  185. Nobsound MS10D
  186. Need Help - Monoblock Power Amplifier EL 34
  187. Replace output transformers in Dynaco ST70
  188. 6P14P-EV in my Simple P-P
  189. Help finding a new tube headphone amp
  190. Cost of building from scratch
  191. Help with loadlines in p.s.e.
  192. Simplified pentode Loftin-White with plate-plate feedback
  193. Inductor Fed VR Tube
  194. Screen Grid Peak Voltage
  195. Unknown (Westrex?) AE285 KT66 cinema amplifier
  196. Has anyone dual-monoed a Stereo 70?
  197. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  198. Pentode G1 series resistance effects.
  199. MUZAK 975a 75watt, 50s
  200. Hybrid SS/Tube Balanced Mic Pre
  201. Adding a baland pot to cathodes on a cathode biased amp?
  202. Is the 8532W a substitute for 8532?
  203. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  204. Configuring 2A3 Driver for 2A3 PSE
  205. Integrated Tube Amp opinion
  206. Ultra-Linear vs. Pentode Longevity
  207. RCA PA amp SA752LO...
  208. Running preamp into acive speakers with cap input
  209. Putting Stock In Carver?
  210. Weak treble
  211. About GU50 PP in UL with separate G2 winding and supply
  212. tube tester comparison
  213. Volume control after the preamp stage or before ?
  214. COPLAND CTA 401 - upgrade of components ?
  215. 2 amp simulation/dummy load for transformer
  216. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  217. 809 Triodes
  218. PSRR
  219. Looking for a schematic or link to a post
  220. Who makes a Williamson output transformer ?
  221. Help with an S5 K12-G Tube Amp
  222. Turing's new tube amps. Please give staff about.
  223. Life Expectancy of DHT's
  224. 6GB8 data sheet translation needed
  225. Full Wave Rectifiers: Center Tapped vs. Bridged
  226. Vectorscope?
  227. Apple macmini become to 6MD8 tube amp
  228. Potting Wax?
  229. How do I repair my Tube Amp?
  230. asr433 simple problem (i hope)
  231. Russian Tube Codes
  232. Help: Driver Stage Design
  233. PAS Power Transformer Capability
  234. 7A5 tube...a small marvel !!!
  235. phono preamp for the s5 electronics model 16ls amp
  236. Screen Stopper Blew
  237. Hickok 533 and 6dj8/6922
  238. OTL design opinion
  239. Pile of TEK scopes.........what do I keep?
  240. Inclusion of an oscilloscope on tester
  241. 6V6SE - Suggestions?
  242. Heretical Line Stage: BOM?
  243. Tube amp to drive 4 ohm headphones?
  244. Another TVA1 - KT88 power amplifier
  245. 845 parafeed
  246. datasheet 6P44C
  247. ecc85 tube buffer or line stage?
  248. Valvestate 8080 That's been dog Peed...
  249. pre war gibson eh125 schematic question
  250. "An elegant full function tube preamp mated to 1st rate SS power amp"

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