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  1. 12A07 low voltage preamp
  2. Buying guideline for 6c33c
  3. New 211/VT4c shootout
  4. GM70 Output transformer
  5. OTL 2013
  6. Octal Preamp Triode Thoughts (IDHT's)
  7. Wrong tube and pin wiring
  8. New Production Tube If Transformers from Germany
  9. Vishay TX2575 resistor placement
  10. Direct connected madness
  11. RH84 build & quite a few questions...
  12. Tube preamp kits
  13. Capacitor query L1 audio innovation pre-amp
  14. Someone Told Me This Wouldn't Work?
  15. How to "do" a FM Multipath Monitor
  16. EF86 pins 2 & 7
  17. Welborne 300B DRD amp
  18. My First Tube Project: 6N16B
  19. Triode mod with G2, G3 connect to anode
  20. Valve mic cable diy
  21. Toroidal transformer is bad
  22. Coupling caps suggestions
  23. EABC80 and the double diode triode?
  24. Frequent Question -Golden Tube Audio 300B monos schematic??
  25. Transformer Terminal Designators
  26. Slew rate limiting in output stage
  27. Sonic Frontiers Line 2 - no line level output
  28. KT88 Ultralinear?
  29. Help with 12AT7 CCDA - EL34 SE Amp Design?
  30. THE FINAL AMP
  31. need 6SN7/6H8C reccom. for amp
  32. 211 parallel amp (made in Iran)
  33. Changing to twisted pair heater from one side grounded
  34. Choke input supply. Cap question.
  35. tube rectifier 6AX4GT
  36. RS1003 triode mode Spice models
  37. Firestone 6V6 Monoblock Problems
  38. Lundahl Output transformers?
  39. GMI-6 / GMI-6-1
  40. New power transformer for Millett's DCPP amp,now available at EDCOR
  41. Tuned Circuit?
  42. remote lead for tubes
  43. Building a Stereo EL84 auto bias PP tube amp
  44. Tube conversion of differential to single ended signal
  45. A transconductance tube amplifier
  46. Unknown Tube
  47. 12vdc to 150vac
  48. When is a tube too weak?
  49. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  50. Biasing aBerning EA-230
  51. Aikido Noob - Please Help!
  52. Wiring Capacitors in Series
  53. Dynaco ST35 power transformer
  54. Individual Coupling Caps
  55. Valve Pre > Intergrated amp
  56. Whats the difference RH84 or Mullard 3-3?
  57. Ultra-Linear SE EL84?
  58. Self balancing pp using ccs question
  59. Help: How To Select Schottky Rectifer Diode
  60. 6550 plate resistance in triode mode? Calculate?
  61. making 6sj7 have same gain as 6sl7
  62. Thick Film resistors?
  63. Mounting position EL84
  64. Curve Tracer: Which One To Buy, What To Consider, Options ?
  65. 71A Tube Filament: AC or DC ?
  66. My Current Line + Phono Combo
  67. What is better than one audioromy M-828A FU29?
  68. Mazda tube
  69. Aikido selectable gain
  70. Preamp power supply
  71. Has anyone used CV9 tubes in a pp design
  72. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  73. BALANCED AUDIO VK 5 VK20
  74. Output transformer computation
  75. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  76. Input Attenuators
  77. new build SE to EL 508
  78. found this on kickstarter
  79. SE Output Transformer question
  80. Safety of DC-coupled inputs
  81. Found some old tubes.
  82. Presence control
  83. Fixing an amp head - bad tubes?
  84. EL84 what factory produced it?
  85. Trio Corp 300b fake?
  86. Cheap triode class A 3Watt + assembled/kit you know ?
  87. Elekit tu 879s upgrades
  88. EZ80 Choke Input Max Capacitance
  89. Correct measurement of filament voltage.
  90. Who put the "half" in the Koren SPICE equation
  91. 5Y3 tube rectifier
  92. Triode or ultraliner connected ?
  93. What is the "Tube Sound"?
  94. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  95. Which KT88 ?
  96. Why make a tube amp that sounds like a SS amp?
  97. Mark VI power Supply
  98. audioromy fu29 - not working, repair or scrap?
  99. Valve amp questions for someone new to them.
  100. Driving Parallel Tubes
  101. Matching quad set
  102. Anyone listen a 46 in UL mode ?
  103. McIntosh MC30 vs. Fisher 80-AZ
  104. Voltage Divider at input to Power Amp
  105. Checking EL84 with Eico 625
  106. Dynaclone ST70 6F2 Alternative
  107. Nobsound MS10D
  108. Need Help - Monoblock Power Amplifier EL 34
  109. Replace output transformers in Dynaco ST70
  110. 6P14P-EV in my Simple P-P
  111. Help finding a new tube headphone amp
  112. Cost of building from scratch
  113. Help with loadlines in p.s.e.
  114. Simplified pentode Loftin-White with plate-plate feedback
  115. Inductor Fed VR Tube
  116. Screen Grid Peak Voltage
  117. Unknown (Westrex?) AE285 KT66 cinema amplifier
  118. Has anyone dual-monoed a Stereo 70?
  119. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  120. Pentode G1 series resistance effects.
  121. MUZAK 975a 75watt, 50s
  122. Hybrid SS/Tube Balanced Mic Pre
  123. Adding a baland pot to cathodes on a cathode biased amp?
  124. Is the 8532W a substitute for 8532?
  125. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  126. Configuring 2A3 Driver for 2A3 PSE
  127. Integrated Tube Amp opinion
  128. Ultra-Linear vs. Pentode Longevity
  129. RCA PA amp SA752LO...
  130. Running preamp into acive speakers with cap input
  131. Putting Stock In Carver?
  132. Weak treble
  133. About GU50 PP in UL with separate G2 winding and supply
  134. tube tester comparison
  135. Volume control after the preamp stage or before ?
  136. COPLAND CTA 401 - upgrade of components ?
  137. 2 amp simulation/dummy load for transformer
  138. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  139. 809 Triodes
  140. PSRR
  141. Looking for a schematic or link to a post
  142. Who makes a Williamson output transformer ?
  143. Help with an S5 K12-G Tube Amp
  144. Turing's new tube amps. Please give staff about.
  145. Life Expectancy of DHT's
  146. 6GB8 data sheet translation needed
  147. Full Wave Rectifiers: Center Tapped vs. Bridged
  148. Vectorscope?
  149. Apple macmini become to 6MD8 tube amp
  150. Potting Wax?
  151. How do I repair my Tube Amp?
  152. asr433 simple problem (i hope)
  153. Russian Tube Codes
  154. Help: Driver Stage Design
  155. PAS Power Transformer Capability
  156. 7A5 tube...a small marvel !!!
  157. phono preamp for the s5 electronics model 16ls amp
  158. Screen Stopper Blew
  159. Hickok 533 and 6dj8/6922
  160. OTL design opinion
  161. Pile of TEK scopes.........what do I keep?
  162. Inclusion of an oscilloscope on tester
  163. 6V6SE - Suggestions?
  164. Heretical Line Stage: BOM?
  165. Tube amp to drive 4 ohm headphones?
  166. Another TVA1 - KT88 power amplifier
  167. 845 parafeed
  168. datasheet 6P44C
  169. ecc85 tube buffer or line stage?
  170. Valvestate 8080 That's been dog Peed...
  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. Bob Latino ST120 Down
  181. SS phase splitters?
  182. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  183. SE 6L6 to KT88
  184. HT power supply design
  185. Good tubes for concertina - 4P1L maybe?
  186. Powr supply question
  187. What is wrong with this Amplifier?
  188. Palmer DREI - Three SE Output Tubes Together?
  189. Heathkit TC-2 Checker and KT88s
  190. my Dummy Amp Contraption
  191. HF Oscillation Heat-Up Spk's Magnet!?
  192. Triode calculations
  193. Western Electric 131
  194. Electrolytic vs. Film 2A3 Cathode Bypass?
  195. Sylvania JAN 6SN7WGTA, late 1970's
  196. TV7 tester problem with 6CB5A tube
  197. Stromberg-Carlson AP-55
  198. SHUGUANG 2A3
  199. Circuit breaker help.
  200. Recommend me a bookshelf speaker for 5W
  201. Monarch STA 100X weird?
  202. 1954 US Army "Sound Repeater" amplifier
  203. 6N7...this configuration work ?
  204. RIAA Active EQ
  205. Direct Coupled E-Linear Amp
  206. Double Triode Mu
  207. Music Angel kt88 new pcbs problem
  208. EL503 replacement?
  209. Reducing gain in a SRPP circuit with ECC82?
  210. 12XX7 Triodes
  211. Output Tx just for interest
  212. Valab in Taiwan output transformers
  213. Impedance Question
  214. How to include a dual triode tube in a KiCAD schematic?
  215. 12U7 SPICE Model
  216. Phono Stage Woofer Bounce
  217. Problem with new L3-3 please help!
  218. Edcor output transformer...very nice !!!
  219. SE Hybrid Amp "The Lunatic one"
  220. Marantz 8b power transformer B+ down 30%
  221. Single or paralell trafo?
  222. CJ PV 5 Impedance?
  223. ECF80 driving EL84 PP
  224. Luhdahl LL1660S what current rating for D3a driver?
  225. what's that cap?
  226. SE EL84 Component placement Suggestion
  227. How to make a cheap 6N3 Buffer Amp even better?
  228. buying Tube Amps need advice/opinions
  229. dynaco pas3
  230. 5U4GB full-wave bridge, stumped
  231. HELP NEEDED for a 6CA4/EZ81 power supply
  232. OT for 2A3 PSE w/Parafeed
  233. More Dynaco Mark VI Questions
  234. curious feedback in circuit of Pioneer SM-Q300 receiver
  235. Hytron 2E25 - Other forgotten and marvelous tube !
  236. need tube upgrade advice please sir
  237. buyer beware
  238. JJ 5y3S pin 1??
  239. My first Sansui AU-111 Rebuild
  240. Capacitor-induced distortion
  241. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  242. Common Cathode as DAC output
  243. Pre-Amp with russian tubes 1j24b
  244. How to calculate, the output impedance of a tube with grounded grid
  245. How To Draw Load Line With Output Transformer ?
  246. Inter electrode capacitance.
  247. My amp is an oscillator !
  248. TESLA PL509
  249. What value for Va ?
  250. Help selecting an input transformer ?

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