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  1. Help with hybrid Aikido amp! Suggestions please
  2. Need help with a Curcio Daniel 1
  3. Audio Tubes used in Industrial equipment?
  4. Hammond H1 Amp
  5. CCS assisted small signal UL pentode
  6. Vox AC50 output transformer rewind
  7. Dynaco ST35 B+
  8. Simple Tube Amp
  9. Portable tube amplifier
  10. Using the heater supply to get a DC source
  11. phono/aux switching problem
  12. What is the best EF86 in production at the moment
  13. 12AX7 / 12AT7 Mu Follower Phono
  14. Kreisler Stereo 6 speaker impedance
  15. A serviceable life.....
  16. TV 7 DU Tube info
  17. Twinings Tea Transformer Covers
  18. ECC88 with 12V heaters
  19. CXhange opa 627ap for an audio gd moon ?
  20. PP-EL34/6550/EL-PL504 or KT88 Bal. innput
  21. fatman itube mk1 sounds bad
  22. Chinese FD-71 tube is the russian GK-71 ?
  23. Leak stereo 20 diagnosis
  24. VTL
  25. Looking for tubed MC pre-pre
  26. Correct wiring types
  27. Couplates
  28. Op-Amp Like Line Preamp
  29. SE GU-50/6CB6 Pentode Design
  30. Pioneer SX34
  31. About metal film resistor in a tube tuner
  32. Looking for 52dBs or more MM phono
  33. Winter is coming... Time to start GM70 SE parafeed amp
  34. Doug Self: Wireless World Magazine Article Archive
  35. Relay short circuit
  36. EL34 PP oscillating
  37. Dynaco switchable diode/tube rec and driver tube mode
  38. CCS into a VR with Interstage question
  39. 6SN7-6V6x2 DC coupled 2 stage with stacked supplies
  40. Rectifier and DC filtering relationship question
  41. Class A2 6JD5 Curves
  42. Motorola HS-839 Amp problem
  43. Active valve monitors?
  44. Did I get this load calculation right?
  45. Convergent SL1 original schematic
  46. Bleed down resistor
  47. How do I calculate resistor value in this schematic?
  48. Easy question about tube data sheet
  49. Tube regulator question
  50. Tube amp build for an 1st timer.
  51. Full music 101d input tube/valve
  52. EZ80 Voltage Question
  53. What the heck is this? Bulb?
  54. Audio Note Kit 1 Upgrade
  55. Will this work? (EL34 PP)
  56. Anthem 1 intergrated amp
  57. Tubes and the sun?
  58. Two triodes cascaded cathode follower?
  59. HIRAGA PREAMP PHONO + line
  60. OB2WA Radioactive???
  61. 9 pin tube socket pcb boards with screw terminals
  62. Hai I need a little help on designing a power supply
  63. Tesla E83CC Frame Grid Tube Purchase - Legitimate Production or Fakes?
  64. Cleaning Up the Noise + Selector Switch Anomalie
  65. first tube preamp
  66. Rescuing a vessel : 1964 HICKOK 539C tube tester
  67. Dynaco Feedback
  68. Mundorf Silver Oil in hot 300B tube amplifier !!
  69. MULLARD 5-20 build with mods
  70. Choke loaded driver with small opt?
  71. Preamp Tube Bias and feedback
  72. Capacitor replacement option
  73. New EL84 SE Amp PCB: The u-SE
  74. Question about Amp Theory
  75. Help needed for modifying DAC-opamp-tube circuit
  76. best way to start with tube amps
  77. Damper diode between C1 and L1
  78. Question about 'near' zero volt bias for low level stages
  79. Filmosound 179 - Should I even bother?
  80. Newbie question
  81. I think I know how it works, but can I get some help? (OddWatt PP)
  82. kt150
  83. As anyone considered black oxide???
  84. OTL question
  85. Headphone amp/preamp project.
  86. Comments or suggestions on this schematic?
  87. Twin Conn Organ 7868 Rebuild
  88. Favorite PP 6550 schematic?
  89. DECWARE Z BOX SCHEMATIC
  90. 6V6
  91. Need suggestion for eliminating noise from aluminum cover
  92. Kuba Serenade Stereo Console question.
  93. Help with tube interchangeability
  94. 6sn7(12au7)-6v6-300b
  95. Westinghouse tube amp MODEL V2508, conversion
  96. Voltage on the chassis, bad xformer?
  97. TubeCad blues...
  98. OPT as PSU filter???
  99. Tube Plate Voltage Timing
  100. Transformer grounding
  101. Two questions concerning bleed resistors
  102. Choke ratings and resistor values in choke input supply?
  103. Novar Spud :: A $200 sweep tube Spud with PCB
  104. Mid 50s 250/500/1000W Valve amp needs some repairs......
  105. I want to learn tubes and set up a workstation
  106. Pre amp wire up__new
  107. allied knight / rauland borg schematic needed
  108. Rollable Tubes
  109. n00b - Leave out the LEDs??
  110. Aikido 5687 all in one kit
  111. 6P13S - WHAT TO DO WITH
  112. el84 set amp for 90db-8ohm speaker?
  113. My first cap coupled 2 stage
  114. Dodd Buffer Tube Rolling?
  115. Lowest THD Tube Design Possible? (Need for a class, I realize it doesn't matter)
  116. Olson-Morgan 6F6 Amplifier Info's needed.
  117. Newbie, Help with datasheet
  118. Conrad Johnson MV55 again - and Hi from a newb
  119. Interesting one piece EL34 PP tube amp diy pcb on ebay
  120. Low power stereo (dual mono) tube headphone amp
  121. 6EJ7's vs. 6JC6A
  122. EL34s Frying in my Cayin A50-T
  123. Grid Leak Amplifier with Unexpected Heater Resistor
  124. 7617 tube data
  125. preamplifier with huge amplification
  126. Counterpoint Amp Output
  127. Phase inverter Gremlins in Philips EL6431 amp
  128. Russian to English Translation needed
  129. Concertina type Phase inverters?
  130. Double C-Core output transformers
  131. Amplifier slew rate and DSD playback
  132. Bypassing volume pot on Cayin integrated tube amp
  133. Distortion when change into ecc83
  134. Mighty Midget Problem (One channel is louder)
  135. Mullard ECL86 3W Economical Amplifier
  136. Building a Baby Huey EL84 amp - might need some pointers
  137. Tranformer Choice
  138. Heathkit WM-5
  139. Aikido preamp power supply
  140. identify this traffo
  141. transformers
  142. parallel tube amplifier.
  143. What to do with a 12" x 8" enclosure?
  144. Odd filament winding
  145. transformers
  146. tube choices for an ST70
  147. "Arabella" - 6EM7 amplifier on Acacia
  148. CDE acquisition of Orange Drop Brand
  149. What is this inductor?
  150. Counterpoint SA-5000 upgrade
  151. Homebrew tube preamp noise
  152. Cathode follower with 12ax7
  153. CPC Japanese Tubes ?
  154. Cary SLA-70 with KT88 - worth building?
  155. Opinions or comments on schematic please
  156. Is this a tie point or a diode?
  157. Need Pinout Help, Silvertone Organ Amp
  158. Pushing EL36 ??
  159. Power Supply Chokes Question ?
  160. First Post, Viking/T Eaton co Tube Amp Issues! *Pictures*
  161. Knight 40 W Amp. tubes correct? Location?
  162. Push-Pull Output Transformer with Cathode Feedback Winding?
  163. 300b amp help
  164. Help with Dynaco value
  165. INTERSTAGE 2A3/211
  166. TCJ Push Pull Amp Calculator question
  167. winter project KT88 PP
  168. En Vogue Darling SRPP SE SRPP tube amp will this work?
  169. Shunt regulation for HT
  170. Unison research simply two, what gridvoltage for EL34?
  171. Finally Measured my Tube Preamp
  172. Aikido octal stereo problems
  173. Philips 5 pin IEC connector in AG9016
  174. Dynaclone OPT replacement - less power than expected
  175. 2 ECL 805 SE
  176. All DHT headphone amp with 4P1L & 307A
  177. cary audio rocket 88 tube amp
  178. Compactron Driver Dynaco MarkIII PCB Design.
  179. Paralelling pentodes ?
  180. KT120 Single Ended Ultralinear
  181. Does a PCL805 glow red at its maximum rating?
  182. V1 Noise Reduction Choices
  183. full pentode ppp
  184. Input transformer question
  185. Is this Tesla ECC803S real or fake?
  186. Michaelson and Austin TVA-1
  187. EN VOGUE DARLING SRPP SE PARALLEL 1626 REVIEW NEEDED
  188. 6EB8\6GN8 P-P Output 2*12w Class-B
  189. B+ regulator for KT88 amplifier
  190. Help figuring out wind/hiss
  191. 12A07 low voltage preamp
  192. Buying guideline for 6c33c
  193. New 211/VT4c shootout
  194. GM70 Output transformer
  195. OTL 2013
  196. Octal Preamp Triode Thoughts (IDHT's)
  197. Wrong tube and pin wiring
  198. New Production Tube If Transformers from Germany
  199. Vishay TX2575 resistor placement
  200. Direct connected madness
  201. RH84 build & quite a few questions...
  202. Tube preamp kits
  203. Capacitor query L1 audio innovation pre-amp
  204. Someone Told Me This Wouldn't Work?
  205. How to "do" a FM Multipath Monitor
  206. EF86 pins 2 & 7
  207. Welborne 300B DRD amp
  208. My First Tube Project: 6N16B
  209. Triode mod with G2, G3 connect to anode
  210. Valve mic cable diy
  211. Toroidal transformer is bad
  212. Coupling caps suggestions
  213. EABC80 and the double diode triode?
  214. Frequent Question -Golden Tube Audio 300B monos schematic??
  215. Transformer Terminal Designators
  216. Slew rate limiting in output stage
  217. Sonic Frontiers Line 2 - no line level output
  218. KT88 Ultralinear?
  219. Help with 12AT7 CCDA - EL34 SE Amp Design?
  220. THE FINAL AMP
  221. need 6SN7/6H8C reccom. for amp
  222. 211 parallel amp (made in Iran)
  223. Changing to twisted pair heater from one side grounded
  224. Choke input supply. Cap question.
  225. tube rectifier 6AX4GT
  226. RS1003 triode mode Spice models
  227. Firestone 6V6 Monoblock Problems
  228. Lundahl Output transformers?
  229. GMI-6 / GMI-6-1
  230. New power transformer for Millett's DCPP amp,now available at EDCOR
  231. Tuned Circuit?
  232. remote lead for tubes
  233. Building a Stereo EL84 auto bias PP tube amp
  234. Tube conversion of differential to single ended signal
  235. A transconductance tube amplifier
  236. Unknown Tube
  237. 12vdc to 150vac
  238. When is a tube too weak?
  239. The Best Way To Separate L+R and Driver/Output Tube Power Supply ?
  240. Biasing aBerning EA-230
  241. Aikido Noob - Please Help!
  242. Wiring Capacitors in Series
  243. Dynaco ST35 power transformer
  244. sunn 200s diagnosis?
  245. Individual Coupling Caps
  246. Valve Pre > Intergrated amp
  247. Whats the difference RH84 or Mullard 3-3?
  248. Ultra-Linear SE EL84?
  249. Self balancing pp using ccs question
  250. Help: How To Select Schottky Rectifer Diode

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