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  1. Input transformer question
  2. Is this Tesla ECC803S real or fake?
  3. Michaelson and Austin TVA-1
  4. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  5. 6EB8\6GN8 P-P Output 2*12w Class-B
  6. B+ regulator for KT88 amplifier
  7. Help figuring out wind/hiss
  8. 12A07 low voltage preamp
  9. Buying guideline for 6c33c
  10. New 211/VT4c shootout
  11. GM70 Output transformer
  12. OTL 2013
  13. Octal Preamp Triode Thoughts (IDHT's)
  14. Wrong tube and pin wiring
  15. New Production Tube If Transformers from Germany
  16. Vishay TX2575 resistor placement
  17. Direct connected madness
  18. RH84 build & quite a few questions...
  19. Tube preamp kits
  20. Capacitor query L1 audio innovation pre-amp
  21. Someone Told Me This Wouldn't Work?
  22. How to "do" a FM Multipath Monitor
  23. EF86 pins 2 & 7
  24. Welborne 300B DRD amp
  25. My First Tube Project: 6N16B
  26. Triode mod with G2, G3 connect to anode
  27. Valve mic cable diy
  28. Toroidal transformer is bad
  29. Coupling caps suggestions
  30. EABC80 and the double diode triode?
  31. Frequent Question -Golden Tube Audio 300B monos schematic??
  32. Transformer Terminal Designators
  33. Slew rate limiting in output stage
  34. Sonic Frontiers Line 2 - no line level output
  35. KT88 Ultralinear?
  36. Help with 12AT7 CCDA - EL34 SE Amp Design?
  37. THE FINAL AMP
  38. need 6SN7/6H8C reccom. for amp
  39. 211 parallel amp (made in Iran)
  40. Changing to twisted pair heater from one side grounded
  41. Choke input supply. Cap question.
  42. tube rectifier 6AX4GT
  43. RS1003 triode mode Spice models
  44. Firestone 6V6 Monoblock Problems
  45. Lundahl Output transformers?
  46. GMI-6 / GMI-6-1
  47. New power transformer for Millett's DCPP amp,now available at EDCOR
  48. Tuned Circuit?
  49. remote lead for tubes
  50. Building a Stereo EL84 auto bias PP tube amp
  51. Tube conversion of differential to single ended signal
  52. A transconductance tube amplifier
  53. Unknown Tube
  54. 12vdc to 150vac
  55. When is a tube too weak?
  56. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  57. Biasing aBerning EA-230
  58. Aikido Noob - Please Help!
  59. Wiring Capacitors in Series
  60. Dynaco ST35 power transformer
  61. sunn 200s diagnosis?
  62. Individual Coupling Caps
  63. Valve Pre > Intergrated amp
  64. Whats the difference RH84 or Mullard 3-3?
  65. Ultra-Linear SE EL84?
  66. Self balancing pp using ccs question
  67. Help: How To Select Schottky Rectifer Diode
  68. 6550 plate resistance in triode mode? Calculate?
  69. making 6sj7 have same gain as 6sl7
  70. Thick Film resistors?
  71. Mounting position EL84
  72. Curve Tracer: Which One To Buy, What To Consider, Options ?
  73. 71A Tube Filament: AC or DC ?
  74. My Current Line + Phono Combo
  75. What is better than one audioromy M-828A FU29?
  76. Mazda tube
  77. Aikido selectable gain
  78. Preamp power supply
  79. Has anyone used CV9 tubes in a pp design
  80. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  81. BALANCED AUDIO VK 5 VK20
  82. Output transformer computation
  83. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  84. Input Attenuators
  85. new build SE to EL 508
  86. found this on kickstarter
  87. SE Output Transformer question
  88. Safety of DC-coupled inputs
  89. Found some old tubes.
  90. Presence control
  91. lafayette pa 622 -> Guitar amp conversion
  92. Fixing an amp head - bad tubes?
  93. EL84 what factory produced it?
  94. Trio Corp 300b fake?
  95. Cheap triode class A 3Watt + assembled/kit you know ?
  96. Elekit tu 879s upgrades
  97. EZ80 Choke Input Max Capacitance
  98. Correct measurement of filament voltage.
  99. Who put the "half" in the Koren SPICE equation
  100. 5Y3 tube rectifier
  101. Triode or ultraliner connected ?
  102. What is the "Tube Sound"?
  103. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  104. Which KT88 ?
  105. Why make a tube amp that sounds like a SS amp?
  106. Mark VI power Supply
  107. audioromy fu29 - not working, repair or scrap?
  108. Valve amp questions for someone new to them.
  109. Driving Parallel Tubes
  110. Matching quad set
  111. Anyone listen a 46 in UL mode ?
  112. McIntosh MC30 vs. Fisher 80-AZ
  113. Voltage Divider at input to Power Amp
  114. Checking EL84 with Eico 625
  115. Dynaclone ST70 6F2 Alternative
  116. Nobsound MS10D
  117. Need Help - Monoblock Power Amplifier EL 34
  118. Replace output transformers in Dynaco ST70
  119. 6P14P-EV in my Simple P-P
  120. Help finding a new tube headphone amp
  121. Cost of building from scratch
  122. Help with loadlines in p.s.e.
  123. Simplified pentode Loftin-White with plate-plate feedback
  124. Inductor Fed VR Tube
  125. Screen Grid Peak Voltage
  126. Unknown (Westrex?) AE285 KT66 cinema amplifier
  127. Has anyone dual-monoed a Stereo 70?
  128. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  129. Pentode G1 series resistance effects.
  130. MUZAK 975a 75watt, 50s
  131. Hybrid SS/Tube Balanced Mic Pre
  132. Adding a baland pot to cathodes on a cathode biased amp?
  133. Is the 8532W a substitute for 8532?
  134. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  135. Configuring 2A3 Driver for 2A3 PSE
  136. Integrated Tube Amp opinion
  137. Ultra-Linear vs. Pentode Longevity
  138. RCA PA amp SA752LO...
  139. Running preamp into acive speakers with cap input
  140. Putting Stock In Carver?
  141. Weak treble
  142. About GU50 PP in UL with separate G2 winding and supply
  143. tube tester comparison
  144. Volume control after the preamp stage or before ?
  145. COPLAND CTA 401 - upgrade of components ?
  146. 2 amp simulation/dummy load for transformer
  147. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  148. 809 Triodes
  149. PSRR
  150. Looking for a schematic or link to a post
  151. Who makes a Williamson output transformer ?
  152. Help with an S5 K12-G Tube Amp
  153. Turing's new tube amps. Please give staff about.
  154. Life Expectancy of DHT's
  155. 6GB8 data sheet translation needed
  156. Full Wave Rectifiers: Center Tapped vs. Bridged
  157. Vectorscope?
  158. Apple macmini become to 6MD8 tube amp
  159. Potting Wax?
  160. How do I repair my Tube Amp?
  161. asr433 simple problem (i hope)
  162. Russian Tube Codes
  163. Help: Driver Stage Design
  164. PAS Power Transformer Capability
  165. 7A5 tube...a small marvel !!!
  166. phono preamp for the s5 electronics model 16ls amp
  167. Screen Stopper Blew
  168. Hickok 533 and 6dj8/6922
  169. OTL design opinion
  170. Pile of TEK scopes.........what do I keep?
  171. Inclusion of an oscilloscope on tester
  172. 6V6SE - Suggestions?
  173. Heretical Line Stage: BOM?
  174. Tube amp to drive 4 ohm headphones?
  175. Another TVA1 - KT88 power amplifier
  176. 845 parafeed
  177. datasheet 6P44C
  178. ecc85 tube buffer or line stage?
  179. Valvestate 8080 That's been dog Peed...
  180. pre war gibson eh125 schematic question
  181. "An elegant full function tube preamp mated to 1st rate SS power amp"
  182. How to select a good Hifi 12AX7 tube?
  183. LTP with CCS and negative PS
  184. Odd phase splitter
  185. Yet Another Hybrid Amplifier
  186. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  187. Heater to Cathode voltage e88cc
  188. ASR-433
  189. Marantz 8B phase splitter
  190. Silvertone 1485 - Output Transformer advice
  191. Bob Latino ST120 Down
  192. SS phase splitters?
  193. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  194. SE 6L6 to KT88
  195. HT power supply design
  196. Good tubes for concertina - 4P1L maybe?
  197. Powr supply question
  198. What is wrong with this Amplifier?
  199. Palmer DREI - Three SE Output Tubes Together?
  200. Heathkit TC-2 Checker and KT88s
  201. my Dummy Amp Contraption
  202. HF Oscillation Heat-Up Spk's Magnet!?
  203. Triode calculations
  204. Western Electric 131
  205. Electrolytic vs. Film 2A3 Cathode Bypass?
  206. Sylvania JAN 6SN7WGTA, late 1970's
  207. TV7 tester problem with 6CB5A tube
  208. Stromberg-Carlson AP-55
  209. SHUGUANG 2A3
  210. Circuit breaker help.
  211. Recommend me a bookshelf speaker for 5W
  212. Monarch STA 100X weird?
  213. 1954 US Army "Sound Repeater" amplifier
  214. 6N7...this configuration work ?
  215. RIAA Active EQ
  216. Direct Coupled E-Linear Amp
  217. Double Triode Mu
  218. Music Angel kt88 new pcbs problem
  219. EL503 replacement?
  220. Reducing gain in a SRPP circuit with ECC82?
  221. 12XX7 Triodes
  222. Output Tx just for interest
  223. Valab in Taiwan output transformers
  224. Impedance Question
  225. How to include a dual triode tube in a KiCAD schematic?
  226. 12U7 SPICE Model
  227. Phono Stage Woofer Bounce
  228. Problem with new L3-3 please help!
  229. Edcor output transformer...very nice !!!
  230. SE Hybrid Amp "The Lunatic one"
  231. Marantz 8b power transformer B+ down 30%
  232. Single or paralell trafo?
  233. CJ PV 5 Impedance?
  234. ECF80 driving EL84 PP
  235. Luhdahl LL1660S what current rating for D3a driver?
  236. what's that cap?
  237. SE EL84 Component placement Suggestion
  238. How to make a cheap 6N3 Buffer Amp even better?
  239. buying Tube Amps need advice/opinions
  240. Best driver and Power 6V6 By Officina
  241. dynaco pas3
  242. 5U4GB full-wave bridge, stumped
  243. Complete Module Driver and Power with DHT 6B4G
  244. HELP NEEDED for a 6CA4/EZ81 power supply
  245. OT for 2A3 PSE w/Parafeed
  246. More Dynaco Mark VI Questions
  247. curious feedback in circuit of Pioneer SM-Q300 receiver
  248. Hytron 2E25 - Other forgotten and marvelous tube !
  249. need tube upgrade advice please sir
  250. buyer beware

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