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  1. Shunt regulation for HT
  2. Unison research simply two, what gridvoltage for EL34?
  3. Finally Measured my Tube Preamp
  4. Aikido octal stereo problems
  5. Philips 5 pin IEC connector in AG9016
  6. Dynaclone OPT replacement - less power than expected
  7. 2 ECL 805 SE
  8. All DHT headphone amp with 4P1L & 307A
  9. cary audio rocket 88 tube amp
  10. Compactron Driver Dynaco MarkIII PCB Design.
  11. Paralelling pentodes ?
  12. KT120 Single Ended Ultralinear
  13. Does a PCL805 glow red at its maximum rating?
  14. V1 Noise Reduction Choices
  15. full pentode ppp
  16. Input transformer question
  17. Is this Tesla ECC803S real or fake?
  18. Michaelson and Austin TVA-1
  19. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  20. 6EB8\6GN8 P-P Output 2*12w Class-B
  21. B+ regulator for KT88 amplifier
  22. Help figuring out wind/hiss
  23. 12A07 low voltage preamp
  24. Buying guideline for 6c33c
  25. New 211/VT4c shootout
  26. GM70 Output transformer
  27. OTL 2013
  28. Octal Preamp Triode Thoughts (IDHT's)
  29. Wrong tube and pin wiring
  30. New Production Tube If Transformers from Germany
  31. Direct connected madness
  32. RH84 build & quite a few questions...
  33. Output tansformer Nuvistor 7587/7985
  34. Tube preamp kits
  35. Capacitor query L1 audio innovation pre-amp
  36. Someone Told Me This Wouldn't Work?
  37. How to "do" a FM Multipath Monitor
  38. EF86 pins 2 & 7
  39. Welborne 300B DRD amp
  40. My First Tube Project: 6N16B
  41. Triode mod with G2, G3 connect to anode
  42. Valve mic cable diy
  43. Toroidal transformer is bad
  44. EABC80 and the double diode triode?
  45. Frequent Question -Golden Tube Audio 300B monos schematic??
  46. Transformer Terminal Designators
  47. Slew rate limiting in output stage
  48. Sonic Frontiers Line 2 - no line level output
  49. KT88 Ultralinear?
  50. Help with 12AT7 CCDA - EL34 SE Amp Design?
  51. THE FINAL AMP
  52. need 6SN7/6H8C reccom. for amp
  53. 211 parallel amp (made in Iran)
  54. Changing to twisted pair heater from one side grounded
  55. Choke input supply. Cap question.
  56. tube rectifier 6AX4GT
  57. RS1003 triode mode Spice models
  58. Firestone 6V6 Monoblock Problems
  59. Lundahl Output transformers?
  60. GMI-6 / GMI-6-1
  61. New power transformer for Millett's DCPP amp,now available at EDCOR
  62. Tuned Circuit?
  63. remote lead for tubes
  64. Building a Stereo EL84 auto bias PP tube amp
  65. Tube conversion of differential to single ended signal
  66. A transconductance tube amplifier
  67. Unknown Tube
  68. 12vdc to 150vac
  69. When is a tube too weak?
  70. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  71. Biasing aBerning EA-230
  72. Aikido Noob - Please Help!
  73. Wiring Capacitors in Series
  74. Dynaco ST35 power transformer
  75. Valve Pre > Intergrated amp
  76. Whats the difference RH84 or Mullard 3-3?
  77. Ultra-Linear SE EL84?
  78. Self balancing pp using ccs question
  79. Help: How To Select Schottky Rectifer Diode
  80. 6550 plate resistance in triode mode? Calculate?
  81. making 6sj7 have same gain as 6sl7
  82. Mounting position EL84
  83. Curve Tracer: Which One To Buy, What To Consider, Options ?
  84. 71A Tube Filament: AC or DC ?
  85. My Current Line + Phono Combo
  86. What is better than one audioromy M-828A FU29?
  87. Mazda tube
  88. Aikido selectable gain
  89. Preamp power supply
  90. Has anyone used CV9 tubes in a pp design
  91. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  92. BALANCED AUDIO VK 5 VK20
  93. Output transformer computation
  94. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  95. Input Attenuators
  96. new build SE to EL 508
  97. found this on kickstarter
  98. SE Output Transformer question
  99. Safety of DC-coupled inputs
  100. Found some old tubes.
  101. Presence control
  102. Fixing an amp head - bad tubes?
  103. EL84 what factory produced it?
  104. Trio Corp 300b fake?
  105. Cheap triode class A 3Watt + assembled/kit you know ?
  106. Elekit tu 879s upgrades
  107. EZ80 Choke Input Max Capacitance
  108. Correct measurement of filament voltage.
  109. Who put the "half" in the Koren SPICE equation
  110. 5Y3 tube rectifier
  111. Triode or ultraliner connected ?
  112. What is the "Tube Sound"?
  113. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  114. Which KT88 ?
  115. Why make a tube amp that sounds like a SS amp?
  116. Mark VI power Supply
  117. audioromy fu29 - not working, repair or scrap?
  118. Valve amp questions for someone new to them.
  119. Driving Parallel Tubes
  120. Matching quad set
  121. Anyone listen a 46 in UL mode ?
  122. McIntosh MC30 vs. Fisher 80-AZ
  123. Voltage Divider at input to Power Amp
  124. Checking EL84 with Eico 625
  125. Dynaclone ST70 6F2 Alternative
  126. Nobsound MS10D
  127. Need Help - Monoblock Power Amplifier EL 34
  128. Replace output transformers in Dynaco ST70
  129. 6P14P-EV in my Simple P-P
  130. Help finding a new tube headphone amp
  131. Cost of building from scratch
  132. Help with loadlines in p.s.e.
  133. Simplified pentode Loftin-White with plate-plate feedback
  134. Inductor Fed VR Tube
  135. Screen Grid Peak Voltage
  136. Unknown (Westrex?) AE285 KT66 cinema amplifier
  137. Has anyone dual-monoed a Stereo 70?
  138. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  139. Pentode G1 series resistance effects.
  140. MUZAK 975a 75watt, 50s
  141. Hybrid SS/Tube Balanced Mic Pre
  142. Adding a baland pot to cathodes on a cathode biased amp?
  143. Is the 8532W a substitute for 8532?
  144. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  145. Configuring 2A3 Driver for 2A3 PSE
  146. Integrated Tube Amp opinion
  147. Ultra-Linear vs. Pentode Longevity
  148. RCA PA amp SA752LO...
  149. Running preamp into acive speakers with cap input
  150. Putting Stock In Carver?
  151. Weak treble
  152. About GU50 PP in UL with separate G2 winding and supply
  153. Volume control after the preamp stage or before ?
  154. COPLAND CTA 401 - upgrade of components ?
  155. 2 amp simulation/dummy load for transformer
  156. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  157. 809 Triodes
  158. PSRR
  159. Looking for a schematic or link to a post
  160. Who makes a Williamson output transformer ?
  161. Help with an S5 K12-G Tube Amp
  162. Turing's new tube amps. Please give staff about.
  163. Life Expectancy of DHT's
  164. 6GB8 data sheet translation needed
  165. Full Wave Rectifiers: Center Tapped vs. Bridged
  166. Vectorscope?
  167. Apple macmini become to 6MD8 tube amp
  168. Potting Wax?
  169. How do I repair my Tube Amp?
  170. asr433 simple problem (i hope)
  171. Russian Tube Codes
  172. Help: Driver Stage Design
  173. PAS Power Transformer Capability
  174. 7A5 tube...a small marvel !!!
  175. phono preamp for the s5 electronics model 16ls amp
  176. Screen Stopper Blew
  177. OTL design opinion
  178. Pile of TEK scopes.........what do I keep?
  179. Inclusion of an oscilloscope on tester
  180. 6V6SE - Suggestions?
  181. Heretical Line Stage: BOM?
  182. Tube amp to drive 4 ohm headphones?
  183. Another TVA1 - KT88 power amplifier
  184. 845 parafeed
  185. datasheet 6P44C
  186. ecc85 tube buffer or line stage?
  187. Valvestate 8080 That's been dog Peed...
  188. "An elegant full function tube preamp mated to 1st rate SS power amp"
  189. How to select a good Hifi 12AX7 tube?
  190. LTP with CCS and negative PS
  191. Odd phase splitter
  192. Yet Another Hybrid Amplifier
  193. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  194. Heater to Cathode voltage e88cc
  195. ASR-433
  196. Marantz 8B phase splitter
  197. Bob Latino ST120 Down
  198. SS phase splitters?
  199. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  200. SE 6L6 to KT88
  201. HT power supply design
  202. Good tubes for concertina - 4P1L maybe?
  203. Powr supply question
  204. What is wrong with this Amplifier?
  205. Palmer DREI - Three SE Output Tubes Together?
  206. Heathkit TC-2 Checker and KT88s
  207. my Dummy Amp Contraption
  208. HF Oscillation Heat-Up Spk's Magnet!?
  209. Triode calculations
  210. Western Electric 131
  211. Electrolytic vs. Film 2A3 Cathode Bypass?
  212. Sylvania JAN 6SN7WGTA, late 1970's
  213. Stromberg-Carlson AP-55
  214. SHUGUANG 2A3
  215. Circuit breaker help.
  216. Recommend me a bookshelf speaker for 5W
  217. Monarch STA 100X weird?
  218. 1954 US Army "Sound Repeater" amplifier
  219. 6N7...this configuration work ?
  220. RIAA Active EQ
  221. Direct Coupled E-Linear Amp
  222. Double Triode Mu
  223. Music Angel kt88 new pcbs problem
  224. EL503 replacement?
  225. Reducing gain in a SRPP circuit with ECC82?
  226. 12XX7 Triodes
  227. Output Tx just for interest
  228. Valab in Taiwan output transformers
  229. Impedance Question
  230. How to include a dual triode tube in a KiCAD schematic?
  231. 12U7 SPICE Model
  232. Phono Stage Woofer Bounce
  233. Problem with new L3-3 please help!
  234. Edcor output transformer...very nice !!!
  235. SE Hybrid Amp "The Lunatic one"
  236. Marantz 8b power transformer B+ down 30%
  237. Single or paralell trafo?
  238. CJ PV 5 Impedance?
  239. ECF80 driving EL84 PP
  240. Luhdahl LL1660S what current rating for D3a driver?
  241. what's that cap?
  242. SE EL84 Component placement Suggestion
  243. How to make a cheap 6N3 Buffer Amp even better?
  244. buying Tube Amps need advice/opinions
  245. dynaco pas3
  246. 5U4GB full-wave bridge, stumped
  247. HELP NEEDED for a 6CA4/EZ81 power supply
  248. OT for 2A3 PSE w/Parafeed
  249. More Dynaco Mark VI Questions
  250. curious feedback in circuit of Pioneer SM-Q300 receiver

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