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  1. Recommended upgrades for Yaqin Tube Buffer ?
  2. 6J5 or 6S4 mic amp?
  3. ST-70 build, ideas and advice
  4. Yaqin MC-100B Help Needed!
  5. Preamp Aikido : 6ax5GT,12au7,2c51
  6. Heater of tube
  7. R-Core Winders
  8. 1946 philco amp, tuner, record player
  9. otions for drawing tube schematics on Mac..?
  10. Push/Pull Plate Load Choke - how to figure Inductance?
  11. 6aw8-a tube question
  12. Newbie needs a point in the right direction
  13. Minimalist PL519 OTL?
  14. Telefunken schematics
  15. parallel pp EL84
  16. AD1 Operating Question
  17. 6П3С-Е Russian NOS: Gas Problem
  18. Favourite EL34 circuit
  19. Medium power SET with parallel OP tubes
  20. sds labs into Pas3
  21. Low voltage 6922 preamp...wanting a schematic
  22. Voltage Gain on Long Tailed Drivers
  23. Purpose of 5842 tube?!?
  24. MA XDSE KT88 vs YAQIN MC-100B KT88
  25. JBL Amplifier story
  26. Recommended spacing for multiple 5AR4's
  27. Cap choices coupling
  28. Output transformer for PP EL34 source
  29. mini max pre
  30. use 2 ohm speakers
  31. Ask tube rect 5u4c and JJ caps
  32. Adding caps to prevent oscilation in AF 5687
  33. Williamson on EL84. Is it worth doing?
  34. CCS and regulated B+
  35. Garter cross-coupled feedback
  36. soundcard protection Z ???
  37. Using a CCS on SE Output Stage
  38. First amp build... help please!
  39. multiple independent grid biasing from 1 mosfet
  40. Eico HF-81 modification opinion
  41. 4K or 5K Output Transformer
  42. Noisy input on Michaelson & Austin TVA-1
  43. Precision Electronics S-35 help,
  44. Rogers Cadet 3 Problem
  45. Triode Electronics VS Hammond
  46. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  47. Start up delay needed???
  48. Connecting a stereo amp as a mono-block
  49. HQ-DHT (All tube DHT amli) 26-45-2A3
  50. 24A tube in triode mode, help !!!
  51. Amperite Ballast
  52. Need super quiet 6.3V filament supply schematic
  53. (Sound Space)Houston 2A3 Power Amplifier
  54. James Burgess 2A3 Monoblocks
  55. Funny tube tale from southamerica
  56. RCA 7189 Black Plates
  57. Preamp nasty noise and hum
  58. EDCOR VS One Electron
  59. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  60. Robinhood output transformers?
  61. looking for help diagnosing volume loss on tube amplified reel to reel player
  62. Question about power consumption Hagerman Cornet Octal
  63. valve rectifier in PSUD
  64. Can you explain what this is ?
  65. volume rise with frequency problem
  66. 1 + 1 = 3 :)
  67. What would the perfect multi-way speaker for a tube amp look like?
  68. GU50 compared with EL84
  69. Counterpoint SA-4 manual and schematics
  70. Ever heard of a Valvo 16ECC ?
  71. the Reversal SRPP
  72. Want to build a C3G linestage
  73. 30A5 tubes
  74. Good speakers to match a K-12
  75. Driving Long Cables, how much current?
  76. twin triode question
  77. Am I going to blow up my 7189s
  78. How is wattage calculated when only using a single section?
  79. Counterpoint SA5 problems and a question.
  80. Headphone Amplifier 6922EH
  81. Fuse Clip for Small Plate Cap Use
  82. Advice sought on medium power triode for tube headphone amplifier
  83. Not the 111M; A Precise 116 Tube Tester
  84. Input stage
  85. Does anyone have any FFT plots from real Class-AB tube amps?
  86. Testing for a Damaged Output Trafo
  87. What has happened to WE Huntsville lately?
  88. Output Transformers Sun HCT 1003 KT
  89. Plexiglass case for small tubes?
  90. 100 Best Sound Tubes
  91. Input tube bias
  92. eschematic amplifier sinle end 12at7 6av6 6bq5
  93. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  94. HV using zener diode
  95. Akai M8 rebuild up and running!
  96. Best current production 2a3
  97. what happens when plugging a stereo source into mono jack on a tube amp?
  98. Transformer coupled Gainclone idea.
  99. Audio Research VT100
  100. output transformer turns per volt
  101. valves and metal cones= bad mating?
  102. Why do you need a grid to ground resistor on a line stage?
  103. Need some help with RIAA Preamp
  104. Swapping transformer cores
  105. got hold of a bunch of tubes...
  106. output transformer secondary configuration
  107. WE/Ultrapath B+ Where?
  108. Blending 12ax7 parallel gain stages
  109. Sudden spark.
  110. Priboj Reborn
  111. Misunderstand of sijosae schematic
  112. 12AX7 Identification
  113. GM70 Datasheet Error!!
  114. Using old Hammond iron
  115. Need confirmation on LED bias for circuit
  116. Tube Parameter "Attenuation, Harmonic" What is it?
  117. Tube amp with Dual Triode
  118. Fisher X-101-C bias question
  119. DC Current-Regulated 300B filaments?
  120. Anyone ever use DC to heat rectifier tubes?
  121. Tantalum Resistor Watt?
  122. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  123. Best sounding remote control volume
  124. plate and screen voltage
  125. 12AT7 plate voltage
  126. Latest LTspice giving crazy FFT results
  127. Dynakit PC-3A as a balance pre?
  128. e283cc better sounding than?
  129. Porchlight Scratchbuild
  130. No output and Loud squeals! Help!
  131. Low mu triode for phase splitter
  132. Help figuring which is the center tap???
  133. Help with Paco SA-40
  134. Best tube/sonics
  135. One Half 12AU7
  136. Gyrators to replace PSU chokes?
  137. Output trannies for 6as7
  138. 2 Toroids = 1 Isolation Transformer?
  139. Finding Transformer Building Supplies
  140. Sagging Heaters
  141. Kofi Annan in: "Kofi's Baby Huey"
  142. Point to point wiring help
  143. help !! PTT2s Line stage
  144. Rickard Berglund, Sweden
  145. "The Sussex Homebrew Valve Tester"
  146. clipping
  147. Wanted: a couple of UNF bolts
  148. H-Bridge Amp Design
  149. need help with yaqin mc10l
  150. Watt the?
  151. DIY tube preamp with 5687
  152. Help with tube stereo build
  153. Tube recommendation for speakers
  154. Eliminating volume pot?
  155. CXPP100-MS-3.3K or CXPP100-MS-4.2K
  156. tube power supply voltage
  157. Driver Bypass Cap - Value?
  158. Tube bases and plate caps rant
  159. tube dual regulated psu needs amp
  160. Help me choose output transformers
  161. Verdier dual regulated tube psu
  162. Aikido Phono Amp Output Tubes 12AU7 and 12AX7?
  163. Mullard EL84 ID
  164. schematic request for transformer with 4k primary and UL taps
  165. Plate-Grid feedback: How to get better than DHT performance from cheaper tubes
  166. Anyone going to the Dayton Hamfest?
  167. More class D madness
  168. the SuperHybrid
  169. Tecon Model "55" final mods(?)
  170. Hammond P-T125E OPT
  171. Highbred Amp "TUMOS" Sounds good?
  172. 300B SET which chassis design
  173. Help with creating a simple tube HV regulated supply
  174. Tube Sockets for oddball miniatures
  175. Bogen chb35a
  176. My last el84 PP tube amplifier
  177. Ultrapath - Advantages?
  178. Phono preamp with c/em2
  179. 12AY7 plate current
  180. OPT identification
  181. Resistor values at supply to anodes
  182. Typical output impedance for tube amps
  183. Problems with EM87 stereo level indicator for computer line out
  184. VR tube recommendation
  185. Mills MRA-5 resistors in tube circuits
  186. B&K Dyna-Quik 500 shows good tubes as Shorted
  187. Output transformers
  188. dbx 386 upgrade
  189. Sub 6n6p for 6n1p?
  190. SET Amp History in Japan
  191. Grid Bias or Cathode Bias
  192. Oscillating CJ PV-5
  193. FireFly Single Ended Tetrode
  194. Aikido front end for a SE 6C33S
  195. Ground Plane vs Star earth
  196. Circuit board with long post??
  197. ecc804 as Phase Splitter
  198. What can you do with a 3a5?
  199. Auto Wave soldering sockets
  200. Using diode for biasing
  201. No bass in 300b amp
  202. Tube socket and pin cleaning
  203. Help With Left Channel Hum
  204. Volume pot has rustling sound
  205. How best to distribute heater windings
  206. 30MB6 data
  207. Kofi Annan in: "Pushed and Pulled Back!"
  208. How dangerous is it to build an SET?
  209. 6as7 SE OTL
  210. Melody Roll
  211. 8417 Output Transformer
  212. Do you still need matched tubes if running a CCS ?
  213. Is a LM335 a direct replacement for a LM317T?
  214. Bias worry
  215. About the tube 6463
  216. awesome RCA MI 12158 tube amp project
  217. Crazy idea: Output tranny with constant magnetic gap?
  218. Most linear triode-strapped pentode
  219. Aikidio Phono Amp Questions
  220. Sample and Hold
  221. Big push-pull power for dummies
  222. Taking my KT88 SE E-linear amp to the next level (long)
  223. Aikido Janus Shunt PSU
  224. 12b4a phase splitter! The best?
  225. Sansui 500EA vs. 500A
  226. Cascoded Ring of Two for Plate Load
  227. 6SL7 distortion
  228. My new PL36 Push-Pull amp
  229. Thyratrons
  230. Tube ampl. for repair
  231. Date codes
  232. China Sountrack KT88 need shematic
  233. Anyone know anything about the Luxman A-2003 tube xover?
  234. Dynamic negative feedback?
  235. New bie: some questions, want to start DIY pre amp
  236. Power Transformer issue
  237. Guess That Tube
  238. Poor soundstage with SET 300B
  239. Dedicated ESL amp -- please comment
  240. Buzzing AC relay coil
  241. Stereo amp parallel wired to mono - possible?
  242. Need biasing advice, cathode biased amp.
  243. Before I go ahead and build this...
  244. Beginner Tube Stereo
  245. Morgan Jones and the ECC88/6922/6DJ8
  246. Help with matching speaker impedance to old tube amp
  247. srpp 2a3 power supply
  248. 12AX7 Tube Question
  249. New problem with Music Angel KT88
  250. Need help changing 12V heater to 6V

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