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  1. amp output testing
  2. S5 Amp Comparison?
  3. How to Ground a Preamp PCB Board?
  4. RH807 / 6L6GC g2 issues
  5. 2010: Replacement for Black Gate WKZ 100uF+100uF 500V
  6. sunn solarus guitar amp
  7. Converting Dynaco ST70 Power Transformer for 12.6V
  8. Simple CF with 5687/6900/E182CC
  9. World Audio Design 5881 Schematic needed
  10. PP triode transformer load
  11. 6V6 PP load line
  12. Need help to under stand this 6n3 Kit from ebay
  13. Help:ampeg svt 2 pro 100v>>240v
  14. Blown left channel
  15. Tube preamp build help-heaters
  16. Medium Power SET, EL156 based
  17. Concertina Splitter question - Need help
  18. 6V6 amp - schematic options
  19. Lectron pa50+jh50
  20. 4pr60b valve
  21. Transformer phase splitter
  22. Help! ground hum
  23. Question regarding Leak Stereo 20 and 6SN7 line stage preamp
  24. Recommended upgrades for Yaqin Tube Buffer ?
  25. 6J5 or 6S4 mic amp?
  26. ST-70 build, ideas and advice
  27. Yaqin MC-100B Help Needed!
  28. Preamp Aikido : 6ax5GT,12au7,2c51
  29. Heater of tube
  30. R-Core Winders
  31. 1946 philco amp, tuner, record player
  32. otions for drawing tube schematics on Mac..?
  33. Push/Pull Plate Load Choke - how to figure Inductance?
  34. 6aw8-a tube question
  35. Newbie needs a point in the right direction
  36. Minimalist PL519 OTL?
  37. Telefunken schematics
  38. parallel pp EL84
  39. AD1 Operating Question
  40. 6П3С-Е Russian NOS: Gas Problem
  41. Favourite EL34 circuit
  42. Medium power SET with parallel OP tubes
  43. sds labs into Pas3
  44. Low voltage 6922 preamp...wanting a schematic
  45. Voltage Gain on Long Tailed Drivers
  46. Purpose of 5842 tube?!?
  47. MA XDSE KT88 vs YAQIN MC-100B KT88
  48. JBL Amplifier story
  49. Fender tweed pro-amp clone
  50. Recommended spacing for multiple 5AR4's
  51. Cap choices coupling
  52. Output transformer for PP EL34 source
  53. mini max pre
  54. use 2 ohm speakers
  55. Ask tube rect 5u4c and JJ caps
  56. Adding caps to prevent oscilation in AF 5687
  57. Williamson on EL84. Is it worth doing?
  58. CCS and regulated B+
  59. Garter cross-coupled feedback
  60. soundcard protection Z ???
  61. Using a CCS on SE Output Stage
  62. First amp build... help please!
  63. multiple independent grid biasing from 1 mosfet
  64. Eico HF-81 modification opinion
  65. 4K or 5K Output Transformer
  66. Noisy input on Michaelson & Austin TVA-1
  67. Precision Electronics S-35 help,
  68. Rogers Cadet 3 Problem
  69. Triode Electronics VS Hammond
  70. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  71. Start up delay needed???
  72. Connecting a stereo amp as a mono-block
  73. HQ-DHT (All tube DHT amli) 26-45-2A3
  74. 24A tube in triode mode, help !!!
  75. Amperite Ballast
  76. Need super quiet 6.3V filament supply schematic
  77. (Sound Space)Houston 2A3 Power Amplifier
  78. James Burgess 2A3 Monoblocks
  79. Funny tube tale from southamerica
  80. RCA 7189 Black Plates
  81. Preamp nasty noise and hum
  82. EDCOR VS One Electron
  83. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  84. Robinhood output transformers?
  85. looking for help diagnosing volume loss on tube amplified reel to reel player
  86. Question about power consumption Hagerman Cornet Octal
  87. valve rectifier in PSUD
  88. Can you explain what this is ?
  89. volume rise with frequency problem
  90. 1 + 1 = 3 :)
  91. What would the perfect multi-way speaker for a tube amp look like?
  92. GU50 compared with EL84
  93. Counterpoint SA-4 manual and schematics
  94. Ever heard of a Valvo 16ECC ?
  95. the Reversal SRPP
  96. Want to build a C3G linestage
  97. 30A5 tubes
  98. Good speakers to match a K-12
  99. Driving Long Cables, how much current?
  100. twin triode question
  101. Am I going to blow up my 7189s
  102. How is wattage calculated when only using a single section?
  103. Counterpoint SA5 problems and a question.
  104. Headphone Amplifier 6922EH
  105. Fuse Clip for Small Plate Cap Use
  106. Advice sought on medium power triode for tube headphone amplifier
  107. Not the 111M; A Precise 116 Tube Tester
  108. Input stage
  109. Does anyone have any FFT plots from real Class-AB tube amps?
  110. Testing for a Damaged Output Trafo
  111. What has happened to WE Huntsville lately?
  112. Output Transformers Sun HCT 1003 KT
  113. Plexiglass case for small tubes?
  114. 100 Best Sound Tubes
  115. Input tube bias
  116. eschematic amplifier sinle end 12at7 6av6 6bq5
  117. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  118. HV using zener diode
  119. Akai M8 rebuild up and running!
  120. Best current production 2a3
  121. what happens when plugging a stereo source into mono jack on a tube amp?
  122. Transformer coupled Gainclone idea.
  123. Audio Research VT100
  124. output transformer turns per volt
  125. valves and metal cones= bad mating?
  126. Why do you need a grid to ground resistor on a line stage?
  127. Need some help with RIAA Preamp
  128. Swapping transformer cores
  129. got hold of a bunch of tubes...
  130. output transformer secondary configuration
  131. WE/Ultrapath B+ Where?
  132. Blending 12ax7 parallel gain stages
  133. Sudden spark.
  134. Priboj Reborn
  135. Misunderstand of sijosae schematic
  136. 12AX7 Identification
  137. GM70 Datasheet Error!!
  138. Using old Hammond iron
  139. Need confirmation on LED bias for circuit
  140. Tone control problems
  141. Tube Parameter "Attenuation, Harmonic" What is it?
  142. Bias adjust on '65 Twin Reverb Reissue AB763 - 2004?
  143. Need HELP on Randall RGT100ES 6L6 to EL34
  144. Tube amp with Dual Triode
  145. Fisher X-101-C bias question
  146. DC Current-Regulated 300B filaments?
  147. Anyone ever use DC to heat rectifier tubes?
  148. Tantalum Resistor Watt?
  149. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  150. Best sounding remote control volume
  151. plate and screen voltage
  152. 12AT7 plate voltage
  153. Latest LTspice giving crazy FFT results
  154. Dynakit PC-3A as a balance pre?
  155. e283cc better sounding than?
  156. Porchlight Scratchbuild
  157. No output and Loud squeals! Help!
  158. Low mu triode for phase splitter
  159. Help figuring which is the center tap???
  160. Help with Paco SA-40
  161. Best tube/sonics
  162. One Half 12AU7
  163. 1939 Novachord - 163 Tube Monster!!
  164. Gyrators to replace PSU chokes?
  165. Output trannies for 6as7
  166. 2 Toroids = 1 Isolation Transformer?
  167. Finding Transformer Building Supplies
  168. Sagging Heaters
  169. Kofi Annan in: "Kofi's Baby Huey"
  170. Point to point wiring help
  171. help !! PTT2s Line stage
  172. Rickard Berglund, Sweden
  173. "The Sussex Homebrew Valve Tester"
  174. clipping
  175. Wanted: a couple of UNF bolts
  176. H-Bridge Amp Design
  177. need help with yaqin mc10l
  178. Watt the?
  179. DIY tube preamp with 5687
  180. Help with tube stereo build
  181. Tube recommendation for speakers
  182. Bogen mx60a Schematic
  183. Eliminating volume pot?
  184. CXPP100-MS-3.3K or CXPP100-MS-4.2K
  185. tube power supply voltage
  186. Driver Bypass Cap - Value?
  187. Tube bases and plate caps rant
  188. tube dual regulated psu needs amp
  189. Help me choose output transformers
  190. 12GT5-guitar amp.
  191. Verdier dual regulated tube psu
  192. Aikido Phono Amp Output Tubes 12AU7 and 12AX7?
  193. Mullard EL84 ID
  194. schematic request for transformer with 4k primary and UL taps
  195. Plate-Grid feedback: How to get better than DHT performance from cheaper tubes
  196. Anyone going to the Dayton Hamfest?
  197. More class D madness
  198. the SuperHybrid
  199. Tecon Model "55" final mods(?)
  200. Hammond P-T125E OPT
  201. Highbred Amp "TUMOS" Sounds good?
  202. 300B SET which chassis design
  203. Help with creating a simple tube HV regulated supply
  204. Tube Sockets for oddball miniatures
  205. McGohan M506 PA Guitar conversion mods.
  206. Bogen chb35a
  207. My last el84 PP tube amplifier
  208. Ultrapath - Advantages?
  209. Phono preamp with c/em2
  210. 12AY7 plate current
  211. OPT identification
  212. Resistor values at supply to anodes
  213. Typical output impedance for tube amps
  214. Problems with EM87 stereo level indicator for computer line out
  215. VR tube recommendation
  216. Mills MRA-5 resistors in tube circuits
  217. B&K Dyna-Quik 500 shows good tubes as Shorted
  218. Output transformers
  219. dbx 386 upgrade
  220. Sub 6n6p for 6n1p?
  221. SET Amp History in Japan
  222. Grid Bias or Cathode Bias
  223. Oscillating CJ PV-5
  224. FireFly Single Ended Tetrode
  225. Aikido front end for a SE 6C33S
  226. Ground Plane vs Star earth
  227. Circuit board with long post??
  228. ecc804 as Phase Splitter
  229. What can you do with a 3a5?
  230. Auto Wave soldering sockets
  231. Using diode for biasing
  232. No bass in 300b amp
  233. Tube socket and pin cleaning
  234. Help With Left Channel Hum
  235. Volume pot has rustling sound
  236. How best to distribute heater windings
  237. 30MB6 data
  238. Kofi Annan in: "Pushed and Pulled Back!"
  239. How dangerous is it to build an SET?
  240. 6as7 SE OTL
  241. Melody Roll
  242. 8417 Output Transformer
  243. Do you still need matched tubes if running a CCS ?
  244. Is a LM335 a direct replacement for a LM317T?
  245. Bias worry
  246. About the tube 6463
  247. awesome RCA MI 12158 tube amp project
  248. Crazy idea: Output tranny with constant magnetic gap?
  249. Most linear triode-strapped pentode
  250. Aikidio Phono Amp Questions

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