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  1. GM70 Output transformer
  2. OTL 2013
  3. Octal Preamp Triode Thoughts (IDHT's)
  4. Wrong tube and pin wiring
  5. New Production Tube If Transformers from Germany
  6. Vishay TX2575 resistor placement
  7. Direct connected madness
  8. RH84 build & quite a few questions...
  9. Tube preamp kits
  10. Capacitor query L1 audio innovation pre-amp
  11. Someone Told Me This Wouldn't Work?
  12. How to "do" a FM Multipath Monitor
  13. EF86 pins 2 & 7
  14. Welborne 300B DRD amp
  15. My First Tube Project: 6N16B
  16. Triode mod with G2, G3 connect to anode
  17. Valve mic cable diy
  18. Toroidal transformer is bad
  19. Coupling caps suggestions
  20. EABC80 and the double diode triode?
  21. Frequent Question -Golden Tube Audio 300B monos schematic??
  22. Transformer Terminal Designators
  23. Slew rate limiting in output stage
  24. Sonic Frontiers Line 2 - no line level output
  25. KT88 Ultralinear?
  26. Help with 12AT7 CCDA - EL34 SE Amp Design?
  27. THE FINAL AMP
  28. need 6SN7/6H8C reccom. for amp
  29. 211 parallel amp (made in Iran)
  30. Changing to twisted pair heater from one side grounded
  31. Choke input supply. Cap question.
  32. tube rectifier 6AX4GT
  33. RS1003 triode mode Spice models
  34. Firestone 6V6 Monoblock Problems
  35. Lundahl Output transformers?
  36. GMI-6 / GMI-6-1
  37. New power transformer for Millett's DCPP amp,now available at EDCOR
  38. Tuned Circuit?
  39. remote lead for tubes
  40. Building a Stereo EL84 auto bias PP tube amp
  41. Tube conversion of differential to single ended signal
  42. A transconductance tube amplifier
  43. Unknown Tube
  44. 12vdc to 150vac
  45. When is a tube too weak?
  46. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  47. Biasing aBerning EA-230
  48. Aikido Noob - Please Help!
  49. Wiring Capacitors in Series
  50. Dynaco ST35 power transformer
  51. sunn 200s diagnosis?
  52. Individual Coupling Caps
  53. Valve Pre > Intergrated amp
  54. Whats the difference RH84 or Mullard 3-3?
  55. Ultra-Linear SE EL84?
  56. Self balancing pp using ccs question
  57. Help: How To Select Schottky Rectifer Diode
  58. 6550 plate resistance in triode mode? Calculate?
  59. making 6sj7 have same gain as 6sl7
  60. Thick Film resistors?
  61. Mounting position EL84
  62. Curve Tracer: Which One To Buy, What To Consider, Options ?
  63. 71A Tube Filament: AC or DC ?
  64. My Current Line + Phono Combo
  65. What is better than one audioromy M-828A FU29?
  66. Mazda tube
  67. Aikido selectable gain
  68. Preamp power supply
  69. Has anyone used CV9 tubes in a pp design
  70. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  71. BALANCED AUDIO VK 5 VK20
  72. Output transformer computation
  73. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  74. Input Attenuators
  75. new build SE to EL 508
  76. found this on kickstarter
  77. SE Output Transformer question
  78. Safety of DC-coupled inputs
  79. Found some old tubes.
  80. Presence control
  81. lafayette pa 622 -> Guitar amp conversion
  82. Fixing an amp head - bad tubes?
  83. EL84 what factory produced it?
  84. Trio Corp 300b fake?
  85. Cheap triode class A 3Watt + assembled/kit you know ?
  86. Elekit tu 879s upgrades
  87. EZ80 Choke Input Max Capacitance
  88. Correct measurement of filament voltage.
  89. Who put the "half" in the Koren SPICE equation
  90. 5Y3 tube rectifier
  91. Triode or ultraliner connected ?
  92. What is the "Tube Sound"?
  93. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  94. Which KT88 ?
  95. Why make a tube amp that sounds like a SS amp?
  96. Mark VI power Supply
  97. audioromy fu29 - not working, repair or scrap?
  98. Valve amp questions for someone new to them.
  99. Driving Parallel Tubes
  100. Matching quad set
  101. Anyone listen a 46 in UL mode ?
  102. McIntosh MC30 vs. Fisher 80-AZ
  103. Voltage Divider at input to Power Amp
  104. Checking EL84 with Eico 625
  105. Dynaclone ST70 6F2 Alternative
  106. Nobsound MS10D
  107. Need Help - Monoblock Power Amplifier EL 34
  108. Replace output transformers in Dynaco ST70
  109. 6P14P-EV in my Simple P-P
  110. Help finding a new tube headphone amp
  111. Cost of building from scratch
  112. Help with loadlines in p.s.e.
  113. Simplified pentode Loftin-White with plate-plate feedback
  114. Inductor Fed VR Tube
  115. Screen Grid Peak Voltage
  116. Unknown (Westrex?) AE285 KT66 cinema amplifier
  117. Has anyone dual-monoed a Stereo 70?
  118. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  119. Pentode G1 series resistance effects.
  120. MUZAK 975a 75watt, 50s
  121. Hybrid SS/Tube Balanced Mic Pre
  122. Adding a baland pot to cathodes on a cathode biased amp?
  123. Is the 8532W a substitute for 8532?
  124. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  125. Configuring 2A3 Driver for 2A3 PSE
  126. Integrated Tube Amp opinion
  127. Ultra-Linear vs. Pentode Longevity
  128. RCA PA amp SA752LO...
  129. Running preamp into acive speakers with cap input
  130. Putting Stock In Carver?
  131. Weak treble
  132. About GU50 PP in UL with separate G2 winding and supply
  133. tube tester comparison
  134. Volume control after the preamp stage or before ?
  135. COPLAND CTA 401 - upgrade of components ?
  136. 2 amp simulation/dummy load for transformer
  137. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  138. 809 Triodes
  139. PSRR
  140. Looking for a schematic or link to a post
  141. Who makes a Williamson output transformer ?
  142. Help with an S5 K12-G Tube Amp
  143. Turing's new tube amps. Please give staff about.
  144. Life Expectancy of DHT's
  145. 6GB8 data sheet translation needed
  146. Full Wave Rectifiers: Center Tapped vs. Bridged
  147. Vectorscope?
  148. Apple macmini become to 6MD8 tube amp
  149. Potting Wax?
  150. How do I repair my Tube Amp?
  151. asr433 simple problem (i hope)
  152. Russian Tube Codes
  153. Help: Driver Stage Design
  154. PAS Power Transformer Capability
  155. 7A5 tube...a small marvel !!!
  156. phono preamp for the s5 electronics model 16ls amp
  157. Screen Stopper Blew
  158. Hickok 533 and 6dj8/6922
  159. OTL design opinion
  160. Pile of TEK scopes.........what do I keep?
  161. Inclusion of an oscilloscope on tester
  162. 6V6SE - Suggestions?
  163. Heretical Line Stage: BOM?
  164. Tube amp to drive 4 ohm headphones?
  165. Another TVA1 - KT88 power amplifier
  166. 845 parafeed
  167. datasheet 6P44C
  168. ecc85 tube buffer or line stage?
  169. Valvestate 8080 That's been dog Peed...
  170. pre war gibson eh125 schematic question
  171. "An elegant full function tube preamp mated to 1st rate SS power amp"
  172. How to select a good Hifi 12AX7 tube?
  173. LTP with CCS and negative PS
  174. Odd phase splitter
  175. Yet Another Hybrid Amplifier
  176. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  177. Heater to Cathode voltage e88cc
  178. ASR-433
  179. Marantz 8B phase splitter
  180. Silvertone 1485 - Output Transformer advice
  181. Bob Latino ST120 Down
  182. SS phase splitters?
  183. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  184. SE 6L6 to KT88
  185. HT power supply design
  186. Good tubes for concertina - 4P1L maybe?
  187. Powr supply question
  188. What is wrong with this Amplifier?
  189. Palmer DREI - Three SE Output Tubes Together?
  190. Heathkit TC-2 Checker and KT88s
  191. my Dummy Amp Contraption
  192. HF Oscillation Heat-Up Spk's Magnet!?
  193. Triode calculations
  194. Western Electric 131
  195. Electrolytic vs. Film 2A3 Cathode Bypass?
  196. Sylvania JAN 6SN7WGTA, late 1970's
  197. TV7 tester problem with 6CB5A tube
  198. Stromberg-Carlson AP-55
  199. SHUGUANG 2A3
  200. Circuit breaker help.
  201. Recommend me a bookshelf speaker for 5W
  202. Monarch STA 100X weird?
  203. 1954 US Army "Sound Repeater" amplifier
  204. 6N7...this configuration work ?
  205. RIAA Active EQ
  206. Direct Coupled E-Linear Amp
  207. Double Triode Mu
  208. Music Angel kt88 new pcbs problem
  209. EL503 replacement?
  210. Reducing gain in a SRPP circuit with ECC82?
  211. 12XX7 Triodes
  212. Output Tx just for interest
  213. Valab in Taiwan output transformers
  214. Impedance Question
  215. How to include a dual triode tube in a KiCAD schematic?
  216. 12U7 SPICE Model
  217. Phono Stage Woofer Bounce
  218. Problem with new L3-3 please help!
  219. Edcor output transformer...very nice !!!
  220. SE Hybrid Amp "The Lunatic one"
  221. Marantz 8b power transformer B+ down 30%
  222. Single or paralell trafo?
  223. CJ PV 5 Impedance?
  224. ECF80 driving EL84 PP
  225. Luhdahl LL1660S what current rating for D3a driver?
  226. what's that cap?
  227. SE EL84 Component placement Suggestion
  228. How to make a cheap 6N3 Buffer Amp even better?
  229. buying Tube Amps need advice/opinions
  230. Best driver and Power 6V6 By Officina
  231. dynaco pas3
  232. 5U4GB full-wave bridge, stumped
  233. Complete Module Driver and Power with DHT 6B4G
  234. HELP NEEDED for a 6CA4/EZ81 power supply
  235. OT for 2A3 PSE w/Parafeed
  236. More Dynaco Mark VI Questions
  237. curious feedback in circuit of Pioneer SM-Q300 receiver
  238. Hytron 2E25 - Other forgotten and marvelous tube !
  239. need tube upgrade advice please sir
  240. buyer beware
  241. Analog tube for DAC & Power supply with valve EZ_80
  242. JJ 5y3S pin 1??
  243. My first Sansui AU-111 Rebuild
  244. Capacitor-induced distortion
  245. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  246. Common Cathode as DAC output
  247. Pre-Amp with russian tubes 1j24b
  248. How to calculate, the output impedance of a tube with grounded grid
  249. How To Draw Load Line With Output Transformer ?
  250. Inter electrode capacitance.

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