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  1. Concertina type Phase inverters?
  2. Double C-Core output transformers
  3. Amplifier slew rate and DSD playback
  4. Bypassing volume pot on Cayin integrated tube amp
  5. Distortion when change into ecc83
  6. Mighty Midget Problem (One channel is louder)
  7. Mullard ECL86 3W Economical Amplifier
  8. Building a Baby Huey EL84 amp - might need some pointers
  9. Tranformer Choice
  10. Heathkit WM-5
  11. Aikido preamp power supply
  12. identify this traffo
  13. transformers
  14. parallel tube amplifier.
  15. What to do with a 12" x 8" enclosure?
  16. Odd filament winding
  17. transformers
  18. tube choices for an ST70
  19. "Arabella" - 6EM7 amplifier on Acacia
  20. CDE acquisition of Orange Drop Brand
  21. What is this inductor?
  22. Counterpoint SA-5000 upgrade
  23. Homebrew tube preamp noise
  24. Cathode follower with 12ax7
  25. CPC Japanese Tubes ?
  26. Cary SLA-70 with KT88 - worth building?
  27. Opinions or comments on schematic please
  28. Is this a tie point or a diode?
  29. Need Pinout Help, Silvertone Organ Amp
  30. Pushing EL36 ??
  31. Power Supply Chokes Question ?
  32. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  33. Knight 40 W Amp. tubes correct? Location?
  34. Push-Pull Output Transformer with Cathode Feedback Winding?
  35. 300b amp help
  36. Help with Dynaco value
  37. INTERSTAGE 2A3/211
  38. TCJ Push Pull Amp Calculator question
  39. winter project KT88 PP
  40. En Vogue Darling SRPP SE SRPP tube amp will this work?
  41. Shunt regulation for HT
  42. Unison research simply two, what gridvoltage for EL34?
  43. Finally Measured my Tube Preamp
  44. Aikido octal stereo problems
  45. Philips 5 pin IEC connector in AG9016
  46. Dynaclone OPT replacement - less power than expected
  47. 2 ECL 805 SE
  48. All DHT headphone amp with 4P1L & 307A
  49. cary audio rocket 88 tube amp
  50. Compactron Driver Dynaco MarkIII PCB Design.
  51. Paralelling pentodes ?
  52. KT120 Single Ended Ultralinear
  53. Does a PCL805 glow red at its maximum rating?
  54. V1 Noise Reduction Choices
  55. full pentode ppp
  56. Input transformer question
  57. Is this Tesla ECC803S real or fake?
  58. Michaelson and Austin TVA-1
  59. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  60. 6EB8\6GN8 P-P Output 2*12w Class-B
  61. B+ regulator for KT88 amplifier
  62. Help figuring out wind/hiss
  63. 12A07 low voltage preamp
  64. Buying guideline for 6c33c
  65. New 211/VT4c shootout
  66. GM70 Output transformer
  67. OTL 2013
  68. Octal Preamp Triode Thoughts (IDHT's)
  69. Wrong tube and pin wiring
  70. New Production Tube If Transformers from Germany
  71. Vishay TX2575 resistor placement
  72. Direct connected madness
  73. RH84 build & quite a few questions...
  74. Tube preamp kits
  75. Capacitor query L1 audio innovation pre-amp
  76. Someone Told Me This Wouldn't Work?
  77. How to "do" a FM Multipath Monitor
  78. EF86 pins 2 & 7
  79. Welborne 300B DRD amp
  80. My First Tube Project: 6N16B
  81. Triode mod with G2, G3 connect to anode
  82. Valve mic cable diy
  83. Toroidal transformer is bad
  84. Coupling caps suggestions
  85. EABC80 and the double diode triode?
  86. Frequent Question -Golden Tube Audio 300B monos schematic??
  87. Transformer Terminal Designators
  88. Slew rate limiting in output stage
  89. Sonic Frontiers Line 2 - no line level output
  90. KT88 Ultralinear?
  91. Help with 12AT7 CCDA - EL34 SE Amp Design?
  92. THE FINAL AMP
  93. need 6SN7/6H8C reccom. for amp
  94. 211 parallel amp (made in Iran)
  95. Changing to twisted pair heater from one side grounded
  96. Choke input supply. Cap question.
  97. tube rectifier 6AX4GT
  98. RS1003 triode mode Spice models
  99. Firestone 6V6 Monoblock Problems
  100. Lundahl Output transformers?
  101. GMI-6 / GMI-6-1
  102. New power transformer for Millett's DCPP amp,now available at EDCOR
  103. Tuned Circuit?
  104. remote lead for tubes
  105. Building a Stereo EL84 auto bias PP tube amp
  106. Tube conversion of differential to single ended signal
  107. A transconductance tube amplifier
  108. Unknown Tube
  109. 12vdc to 150vac
  110. When is a tube too weak?
  111. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  112. Biasing aBerning EA-230
  113. Aikido Noob - Please Help!
  114. Wiring Capacitors in Series
  115. Dynaco ST35 power transformer
  116. sunn 200s diagnosis?
  117. Individual Coupling Caps
  118. Valve Pre > Intergrated amp
  119. Whats the difference RH84 or Mullard 3-3?
  120. Ultra-Linear SE EL84?
  121. Self balancing pp using ccs question
  122. Help: How To Select Schottky Rectifer Diode
  123. 6550 plate resistance in triode mode? Calculate?
  124. making 6sj7 have same gain as 6sl7
  125. Thick Film resistors?
  126. Mounting position EL84
  127. Curve Tracer: Which One To Buy, What To Consider, Options ?
  128. 71A Tube Filament: AC or DC ?
  129. My Current Line + Phono Combo
  130. What is better than one audioromy M-828A FU29?
  131. Mazda tube
  132. Aikido selectable gain
  133. Preamp power supply
  134. Has anyone used CV9 tubes in a pp design
  135. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  136. BALANCED AUDIO VK 5 VK20
  137. Output transformer computation
  138. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  139. Input Attenuators
  140. new build SE to EL 508
  141. found this on kickstarter
  142. SE Output Transformer question
  143. Safety of DC-coupled inputs
  144. Found some old tubes.
  145. Presence control
  146. lafayette pa 622 -> Guitar amp conversion
  147. Fixing an amp head - bad tubes?
  148. EL84 what factory produced it?
  149. Trio Corp 300b fake?
  150. Cheap triode class A 3Watt + assembled/kit you know ?
  151. Elekit tu 879s upgrades
  152. EZ80 Choke Input Max Capacitance
  153. Correct measurement of filament voltage.
  154. Who put the "half" in the Koren SPICE equation
  155. 5Y3 tube rectifier
  156. Triode or ultraliner connected ?
  157. What is the "Tube Sound"?
  158. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  159. Which KT88 ?
  160. Why make a tube amp that sounds like a SS amp?
  161. Mark VI power Supply
  162. audioromy fu29 - not working, repair or scrap?
  163. Valve amp questions for someone new to them.
  164. Driving Parallel Tubes
  165. Matching quad set
  166. Anyone listen a 46 in UL mode ?
  167. McIntosh MC30 vs. Fisher 80-AZ
  168. Voltage Divider at input to Power Amp
  169. Checking EL84 with Eico 625
  170. Dynaclone ST70 6F2 Alternative
  171. Nobsound MS10D
  172. Need Help - Monoblock Power Amplifier EL 34
  173. Replace output transformers in Dynaco ST70
  174. 6P14P-EV in my Simple P-P
  175. Help finding a new tube headphone amp
  176. Cost of building from scratch
  177. Help with loadlines in p.s.e.
  178. Simplified pentode Loftin-White with plate-plate feedback
  179. Inductor Fed VR Tube
  180. Screen Grid Peak Voltage
  181. Unknown (Westrex?) AE285 KT66 cinema amplifier
  182. Has anyone dual-monoed a Stereo 70?
  183. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  184. Pentode G1 series resistance effects.
  185. MUZAK 975a 75watt, 50s
  186. Hybrid SS/Tube Balanced Mic Pre
  187. Adding a baland pot to cathodes on a cathode biased amp?
  188. Is the 8532W a substitute for 8532?
  189. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  190. Configuring 2A3 Driver for 2A3 PSE
  191. Integrated Tube Amp opinion
  192. Ultra-Linear vs. Pentode Longevity
  193. RCA PA amp SA752LO...
  194. Running preamp into acive speakers with cap input
  195. Putting Stock In Carver?
  196. Weak treble
  197. About GU50 PP in UL with separate G2 winding and supply
  198. tube tester comparison
  199. Volume control after the preamp stage or before ?
  200. COPLAND CTA 401 - upgrade of components ?
  201. 2 amp simulation/dummy load for transformer
  202. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  203. 809 Triodes
  204. PSRR
  205. Looking for a schematic or link to a post
  206. Who makes a Williamson output transformer ?
  207. Help with an S5 K12-G Tube Amp
  208. Turing's new tube amps. Please give staff about.
  209. Life Expectancy of DHT's
  210. 6GB8 data sheet translation needed
  211. Full Wave Rectifiers: Center Tapped vs. Bridged
  212. Vectorscope?
  213. Apple macmini become to 6MD8 tube amp
  214. Potting Wax?
  215. How do I repair my Tube Amp?
  216. asr433 simple problem (i hope)
  217. Russian Tube Codes
  218. Help: Driver Stage Design
  219. PAS Power Transformer Capability
  220. 7A5 tube...a small marvel !!!
  221. phono preamp for the s5 electronics model 16ls amp
  222. Screen Stopper Blew
  223. Hickok 533 and 6dj8/6922
  224. OTL design opinion
  225. Pile of TEK scopes.........what do I keep?
  226. Inclusion of an oscilloscope on tester
  227. 6V6SE - Suggestions?
  228. Heretical Line Stage: BOM?
  229. Tube amp to drive 4 ohm headphones?
  230. Another TVA1 - KT88 power amplifier
  231. 845 parafeed
  232. datasheet 6P44C
  233. ecc85 tube buffer or line stage?
  234. Valvestate 8080 That's been dog Peed...
  235. pre war gibson eh125 schematic question
  236. "An elegant full function tube preamp mated to 1st rate SS power amp"
  237. How to select a good Hifi 12AX7 tube?
  238. LTP with CCS and negative PS
  239. Odd phase splitter
  240. Yet Another Hybrid Amplifier
  241. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  242. Heater to Cathode voltage e88cc
  243. ASR-433
  244. Marantz 8B phase splitter
  245. Silvertone 1485 - Output Transformer advice
  246. Bob Latino ST120 Down
  247. SS phase splitters?
  248. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  249. SE 6L6 to KT88
  250. HT power supply design

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