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  1. ECC84/6N14P for audio
  2. PSU ignorant
  3. How to define a quality OT?
  4. Looking for some build advice
  5. ASC oil caps vs M-tube cap for ps
  6. SS CCS and distortion
  7. the valve with no markings
  8. Pentode AB1 design school???
  9. Capability of Sony/Tamradio SE Output Transformers
  10. my CELLINI triode amp
  11. 45-based SET -> Pass Labs F4
  12. Testing Amplifiers - Speaker or dummy load
  13. Quiet amp hums with signal source or input directly tied to star earth??
  14. amp output testing
  15. S5 Amp Comparison?
  16. How to Ground a Preamp PCB Board?
  17. RH807 / 6L6GC g2 issues
  18. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  19. sunn solarus guitar amp
  20. Converting Dynaco ST70 Power Transformer for 12.6V
  21. Simple CF with 5687/6900/E182CC
  22. World Audio Design 5881 Schematic needed
  23. PP triode transformer load
  24. 6V6 PP load line
  25. Need help to under stand this 6n3 Kit from ebay
  26. Help:ampeg svt 2 pro 100v>>240v
  27. Blown left channel
  28. Tube preamp build help-heaters
  29. Medium Power SET, EL156 based
  30. Concertina Splitter question - Need help
  31. 6V6 amp - schematic options
  32. Lectron pa50+jh50
  33. 4pr60b valve
  34. Transformer phase splitter
  35. Help! ground hum
  36. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  37. Recommended upgrades for Yaqin Tube Buffer ?
  38. 6J5 or 6S4 mic amp?
  39. ST-70 build, ideas and advice
  40. Yaqin MC-100B Help Needed!
  41. Preamp Aikido : 6ax5GT,12au7,2c51
  42. Heater of tube
  43. R-Core Winders
  44. 1946 philco amp, tuner, record player
  45. otions for drawing tube schematics on Mac..?
  46. Push/Pull Plate Load Choke - how to figure Inductance?
  47. 6aw8-a tube question
  48. Newbie needs a point in the right direction
  49. Minimalist PL519 OTL?
  50. Telefunken schematics
  51. parallel pp EL84
  52. AD1 Operating Question
  53. 6П3С-Е Russian NOS: Gas Problem
  54. Favourite EL34 circuit
  55. Medium power SET with parallel OP tubes
  56. sds labs into Pas3
  57. Low voltage 6922 preamp...wanting a schematic
  58. Voltage Gain on Long Tailed Drivers
  59. Purpose of 5842 tube?!?
  60. MA XDSE KT88 vs YAQIN MC-100B KT88
  61. JBL Amplifier story
  62. Fender tweed pro-amp clone
  63. Recommended spacing for multiple 5AR4's
  64. Cap choices coupling
  65. Output transformer for PP EL34 source
  66. mini max pre
  67. use 2 ohm speakers
  68. Ask tube rect 5u4c and JJ caps
  69. Adding caps to prevent oscilation in AF 5687
  70. Williamson on EL84. Is it worth doing?
  71. CCS and regulated B+
  72. Garter cross-coupled feedback
  73. soundcard protection Z ???
  74. Using a CCS on SE Output Stage
  75. First amp build... help please!
  76. multiple independent grid biasing from 1 mosfet
  77. Eico HF-81 modification opinion
  78. 4K or 5K Output Transformer
  79. Noisy input on Michaelson & Austin TVA-1
  80. Precision Electronics S-35 help,
  81. Rogers Cadet 3 Problem
  82. Triode Electronics VS Hammond
  83. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  84. Start up delay needed???
  85. Connecting a stereo amp as a mono-block
  86. HQ-DHT (All tube DHT amli) 26-45-2A3
  87. 24A tube in triode mode, help !!!
  88. Amperite Ballast
  89. Need super quiet 6.3V filament supply schematic
  90. (Sound Space)Houston 2A3 Power Amplifier
  91. James Burgess 2A3 Monoblocks
  92. Funny tube tale from southamerica
  93. RCA 7189 Black Plates
  94. Preamp nasty noise and hum
  95. EDCOR VS One Electron
  96. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  97. Robinhood output transformers?
  98. looking for help diagnosing volume loss on tube amplified reel to reel player
  99. Question about power consumption Hagerman Cornet Octal
  100. valve rectifier in PSUD
  101. Can you explain what this is ?
  102. volume rise with frequency problem
  103. 1 + 1 = 3 :)
  104. What would the perfect multi-way speaker for a tube amp look like?
  105. GU50 compared with EL84
  106. Counterpoint SA-4 manual and schematics
  107. Ever heard of a Valvo 16ECC ?
  108. the Reversal SRPP
  109. Want to build a C3G linestage
  110. 30A5 tubes
  111. Good speakers to match a K-12
  112. Driving Long Cables, how much current?
  113. twin triode question
  114. Am I going to blow up my 7189s
  115. How is wattage calculated when only using a single section?
  116. Counterpoint SA5 problems and a question.
  117. Headphone Amplifier 6922EH
  118. Fuse Clip for Small Plate Cap Use
  119. Advice sought on medium power triode for tube headphone amplifier
  120. Not the 111M; A Precise 116 Tube Tester
  121. Input stage
  122. Does anyone have any FFT plots from real Class-AB tube amps?
  123. Testing for a Damaged Output Trafo
  124. What has happened to WE Huntsville lately?
  125. Output Transformers Sun HCT 1003 KT
  126. Plexiglass case for small tubes?
  127. 100 Best Sound Tubes
  128. Input tube bias
  129. eschematic amplifier sinle end 12at7 6av6 6bq5
  130. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  131. HV using zener diode
  132. Akai M8 rebuild up and running!
  133. Best current production 2a3
  134. what happens when plugging a stereo source into mono jack on a tube amp?
  135. Transformer coupled Gainclone idea.
  136. Audio Research VT100
  137. output transformer turns per volt
  138. valves and metal cones= bad mating?
  139. Why do you need a grid to ground resistor on a line stage?
  140. Need some help with RIAA Preamp
  141. Swapping transformer cores
  142. got hold of a bunch of tubes...
  143. output transformer secondary configuration
  144. WE/Ultrapath B+ Where?
  145. Blending 12ax7 parallel gain stages
  146. Sudden spark.
  147. Priboj Reborn
  148. Misunderstand of sijosae schematic
  149. 12AX7 Identification
  150. GM70 Datasheet Error!!
  151. Using old Hammond iron
  152. Need confirmation on LED bias for circuit
  153. Tone control problems
  154. Tube Parameter "Attenuation, Harmonic" What is it?
  155. Bias adjust on '65 Twin Reverb Reissue AB763 - 2004?
  156. Need HELP on Randall RGT100ES 6L6 to EL34
  157. Tube amp with Dual Triode
  158. Fisher X-101-C bias question
  159. DC Current-Regulated 300B filaments?
  160. Anyone ever use DC to heat rectifier tubes?
  161. Tantalum Resistor Watt?
  162. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  163. Best sounding remote control volume
  164. plate and screen voltage
  165. 12AT7 plate voltage
  166. Latest LTspice giving crazy FFT results
  167. Dynakit PC-3A as a balance pre?
  168. e283cc better sounding than?
  169. Porchlight Scratchbuild
  170. No output and Loud squeals! Help!
  171. Low mu triode for phase splitter
  172. Help figuring which is the center tap???
  173. Help with Paco SA-40
  174. Best tube/sonics
  175. One Half 12AU7
  176. 1939 Novachord - 163 Tube Monster!!
  177. Gyrators to replace PSU chokes?
  178. Output trannies for 6as7
  179. 2 Toroids = 1 Isolation Transformer?
  180. Finding Transformer Building Supplies
  181. Sagging Heaters
  182. Kofi Annan in: "Kofi's Baby Huey"
  183. Point to point wiring help
  184. help !! PTT2s Line stage
  185. Rickard Berglund, Sweden
  186. "The Sussex Homebrew Valve Tester"
  187. clipping
  188. Wanted: a couple of UNF bolts
  189. H-Bridge Amp Design
  190. need help with yaqin mc10l
  191. Watt the?
  192. DIY tube preamp with 5687
  193. Help with tube stereo build
  194. Tube recommendation for speakers
  195. Bogen mx60a Schematic
  196. Eliminating volume pot?
  197. CXPP100-MS-3.3K or CXPP100-MS-4.2K
  198. tube power supply voltage
  199. Driver Bypass Cap - Value?
  200. Tube bases and plate caps rant
  201. tube dual regulated psu needs amp
  202. Help me choose output transformers
  203. 12GT5-guitar amp.
  204. Verdier dual regulated tube psu
  205. Aikido Phono Amp Output Tubes 12AU7 and 12AX7?
  206. Mullard EL84 ID
  207. schematic request for transformer with 4k primary and UL taps
  208. Plate-Grid feedback: How to get better than DHT performance from cheaper tubes
  209. Anyone going to the Dayton Hamfest?
  210. More class D madness
  211. the SuperHybrid
  212. Tecon Model "55" final mods(?)
  213. Hammond P-T125E OPT
  214. Highbred Amp "TUMOS" Sounds good?
  215. 300B SET which chassis design
  216. Help with creating a simple tube HV regulated supply
  217. Tube Sockets for oddball miniatures
  218. McGohan M506 PA Guitar conversion mods.
  219. Bogen chb35a
  220. My last el84 PP tube amplifier
  221. Ultrapath - Advantages?
  222. Phono preamp with c/em2
  223. 12AY7 plate current
  224. OPT identification
  225. Resistor values at supply to anodes
  226. Typical output impedance for tube amps
  227. Problems with EM87 stereo level indicator for computer line out
  228. VR tube recommendation
  229. Mills MRA-5 resistors in tube circuits
  230. B&K Dyna-Quik 500 shows good tubes as Shorted
  231. Output transformers
  232. dbx 386 upgrade
  233. Sub 6n6p for 6n1p?
  234. SET Amp History in Japan
  235. Grid Bias or Cathode Bias
  236. Oscillating CJ PV-5
  237. FireFly Single Ended Tetrode
  238. Aikido front end for a SE 6C33S
  239. Ground Plane vs Star earth
  240. Circuit board with long post??
  241. ecc804 as Phase Splitter
  242. What can you do with a 3a5?
  243. Auto Wave soldering sockets
  244. Using diode for biasing
  245. No bass in 300b amp
  246. Tube socket and pin cleaning
  247. Help With Left Channel Hum
  248. Volume pot has rustling sound
  249. How best to distribute heater windings
  250. 30MB6 data

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