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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. Fender tweed pro-amp clone
  27. Recommended spacing for multiple 5AR4's
  28. Cap choices coupling
  29. Output transformer for PP EL34 source
  30. mini max pre
  31. use 2 ohm speakers
  32. Ask tube rect 5u4c and JJ caps
  33. Adding caps to prevent oscilation in AF 5687
  34. Williamson on EL84. Is it worth doing?
  35. CCS and regulated B+
  36. Garter cross-coupled feedback
  37. soundcard protection Z ???
  38. Using a CCS on SE Output Stage
  39. First amp build... help please!
  40. multiple independent grid biasing from 1 mosfet
  41. Eico HF-81 modification opinion
  42. 4K or 5K Output Transformer
  43. Noisy input on Michaelson & Austin TVA-1
  44. Precision Electronics S-35 help,
  45. Rogers Cadet 3 Problem
  46. Triode Electronics VS Hammond
  47. TRIODE OPERATION USING THE SCREEN GRIDS AS THE CONTROL GRID - this work ?
  48. Start up delay needed???
  49. Connecting a stereo amp as a mono-block
  50. HQ-DHT (All tube DHT amli) 26-45-2A3
  51. 24A tube in triode mode, help !!!
  52. Amperite Ballast
  53. Need super quiet 6.3V filament supply schematic
  54. (Sound Space)Houston 2A3 Power Amplifier
  55. James Burgess 2A3 Monoblocks
  56. Funny tube tale from southamerica
  57. RCA 7189 Black Plates
  58. Preamp nasty noise and hum
  59. EDCOR VS One Electron
  60. Parallel output tubes/valves in push pull. Advantages/disadvantages?
  61. Robinhood output transformers?
  62. looking for help diagnosing volume loss on tube amplified reel to reel player
  63. Question about power consumption Hagerman Cornet Octal
  64. valve rectifier in PSUD
  65. Can you explain what this is ?
  66. volume rise with frequency problem
  67. 1 + 1 = 3 :)
  68. What would the perfect multi-way speaker for a tube amp look like?
  69. GU50 compared with EL84
  70. Counterpoint SA-4 manual and schematics
  71. Ever heard of a Valvo 16ECC ?
  72. the Reversal SRPP
  73. Want to build a C3G linestage
  74. 30A5 tubes
  75. Good speakers to match a K-12
  76. Driving Long Cables, how much current?
  77. twin triode question
  78. Am I going to blow up my 7189s
  79. How is wattage calculated when only using a single section?
  80. Counterpoint SA5 problems and a question.
  81. Headphone Amplifier 6922EH
  82. Fuse Clip for Small Plate Cap Use
  83. Advice sought on medium power triode for tube headphone amplifier
  84. Not the 111M; A Precise 116 Tube Tester
  85. Input stage
  86. Does anyone have any FFT plots from real Class-AB tube amps?
  87. Testing for a Damaged Output Trafo
  88. What has happened to WE Huntsville lately?
  89. Output Transformers Sun HCT 1003 KT
  90. Plexiglass case for small tubes?
  91. 100 Best Sound Tubes
  92. Input tube bias
  93. eschematic amplifier sinle end 12at7 6av6 6bq5
  94. Wiring - Audio Note Transformer Parallel Single-Ended 300B
  95. HV using zener diode
  96. Akai M8 rebuild up and running!
  97. Best current production 2a3
  98. what happens when plugging a stereo source into mono jack on a tube amp?
  99. Transformer coupled Gainclone idea.
  100. Audio Research VT100
  101. output transformer turns per volt
  102. valves and metal cones= bad mating?
  103. Why do you need a grid to ground resistor on a line stage?
  104. Need some help with RIAA Preamp
  105. Swapping transformer cores
  106. got hold of a bunch of tubes...
  107. output transformer secondary configuration
  108. WE/Ultrapath B+ Where?
  109. Blending 12ax7 parallel gain stages
  110. Sudden spark.
  111. Priboj Reborn
  112. Misunderstand of sijosae schematic
  113. 12AX7 Identification
  114. GM70 Datasheet Error!!
  115. Using old Hammond iron
  116. Need confirmation on LED bias for circuit
  117. Tone control problems
  118. Tube Parameter "Attenuation, Harmonic" What is it?
  119. Bias adjust on '65 Twin Reverb Reissue AB763 - 2004?
  120. Need HELP on Randall RGT100ES 6L6 to EL34
  121. Tube amp with Dual Triode
  122. Fisher X-101-C bias question
  123. DC Current-Regulated 300B filaments?
  124. Anyone ever use DC to heat rectifier tubes?
  125. Tantalum Resistor Watt?
  126. Help Choosing Power Supply Voltage Regulator Aikido Phono Amp
  127. Best sounding remote control volume
  128. plate and screen voltage
  129. 12AT7 plate voltage
  130. Latest LTspice giving crazy FFT results
  131. Dynakit PC-3A as a balance pre?
  132. e283cc better sounding than?
  133. Porchlight Scratchbuild
  134. No output and Loud squeals! Help!
  135. Low mu triode for phase splitter
  136. Help figuring which is the center tap???
  137. Help with Paco SA-40
  138. Best tube/sonics
  139. One Half 12AU7
  140. 1939 Novachord - 163 Tube Monster!!
  141. Gyrators to replace PSU chokes?
  142. Output trannies for 6as7
  143. 2 Toroids = 1 Isolation Transformer?
  144. Finding Transformer Building Supplies
  145. Sagging Heaters
  146. Kofi Annan in: "Kofi's Baby Huey"
  147. Point to point wiring help
  148. help !! PTT2s Line stage
  149. Rickard Berglund, Sweden
  150. "The Sussex Homebrew Valve Tester"
  151. clipping
  152. Wanted: a couple of UNF bolts
  153. H-Bridge Amp Design
  154. need help with yaqin mc10l
  155. Watt the?
  156. DIY tube preamp with 5687
  157. Help with tube stereo build
  158. Tube recommendation for speakers
  159. Bogen mx60a Schematic
  160. Eliminating volume pot?
  161. CXPP100-MS-3.3K or CXPP100-MS-4.2K
  162. tube power supply voltage
  163. Driver Bypass Cap - Value?
  164. Tube bases and plate caps rant
  165. tube dual regulated psu needs amp
  166. Help me choose output transformers
  167. 12GT5-guitar amp.
  168. Verdier dual regulated tube psu
  169. Aikido Phono Amp Output Tubes 12AU7 and 12AX7?
  170. Mullard EL84 ID
  171. schematic request for transformer with 4k primary and UL taps
  172. Plate-Grid feedback: How to get better than DHT performance from cheaper tubes
  173. Anyone going to the Dayton Hamfest?
  174. More class D madness
  175. the SuperHybrid
  176. Tecon Model "55" final mods(?)
  177. Hammond P-T125E OPT
  178. Highbred Amp "TUMOS" Sounds good?
  179. 300B SET which chassis design
  180. Help with creating a simple tube HV regulated supply
  181. Tube Sockets for oddball miniatures
  182. McGohan M506 PA Guitar conversion mods.
  183. Bogen chb35a
  184. My last el84 PP tube amplifier
  185. Ultrapath - Advantages?
  186. Phono preamp with c/em2
  187. 12AY7 plate current
  188. OPT identification
  189. Resistor values at supply to anodes
  190. Typical output impedance for tube amps
  191. Problems with EM87 stereo level indicator for computer line out
  192. VR tube recommendation
  193. Mills MRA-5 resistors in tube circuits
  194. B&K Dyna-Quik 500 shows good tubes as Shorted
  195. Output transformers
  196. dbx 386 upgrade
  197. Sub 6n6p for 6n1p?
  198. SET Amp History in Japan
  199. Grid Bias or Cathode Bias
  200. Oscillating CJ PV-5
  201. FireFly Single Ended Tetrode
  202. Aikido front end for a SE 6C33S
  203. Ground Plane vs Star earth
  204. Circuit board with long post??
  205. ecc804 as Phase Splitter
  206. What can you do with a 3a5?
  207. Auto Wave soldering sockets
  208. Using diode for biasing
  209. No bass in 300b amp
  210. Tube socket and pin cleaning
  211. Help With Left Channel Hum
  212. Volume pot has rustling sound
  213. How best to distribute heater windings
  214. 30MB6 data
  215. Kofi Annan in: "Pushed and Pulled Back!"
  216. How dangerous is it to build an SET?
  217. 6as7 SE OTL
  218. Melody Roll
  219. 8417 Output Transformer
  220. Do you still need matched tubes if running a CCS ?
  221. Is a LM335 a direct replacement for a LM317T?
  222. Bias worry
  223. About the tube 6463
  224. awesome RCA MI 12158 tube amp project
  225. Crazy idea: Output tranny with constant magnetic gap?
  226. Most linear triode-strapped pentode
  227. Aikidio Phono Amp Questions
  228. Sample and Hold
  229. Big push-pull power for dummies
  230. Foxtrot Guitar Amp - Output transformer
  231. Taking my KT88 SE E-linear amp to the next level (long)
  232. Aikido Janus Shunt PSU
  233. 12b4a phase splitter! The best?
  234. Sansui 500EA vs. 500A
  235. Cascoded Ring of Two for Plate Load
  236. 6SL7 distortion
  237. My new PL36 Push-Pull amp
  238. adding line out to guitar tube preamp
  239. Thyratrons
  240. Tube ampl. for repair
  241. Date codes
  242. China Sountrack KT88 need shematic
  243. Anyone know anything about the Luxman A-2003 tube xover?
  244. Dynamic negative feedback?
  245. Need help with Ampeg J-20 crackling buzzing hissing noise issue/blocking distortion?
  246. New bie: some questions, want to start DIY pre amp
  247. Power Transformer issue
  248. Guess That Tube
  249. Poor soundstage with SET 300B
  250. Dedicated ESL amp -- please comment

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