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  1. 50FE5-push pull stereo
  2. tamura f-7000 series
  3. Very simple high power single ended
  4. CAD for tubes?
  5. Which tubes are lowest noise?
  6. Stacking/paralleling caps - same value?
  7. where to get good 5AR4 's
  8. Greetings from ETF!
  9. 26 Preamp, Kennedy Version 3
  10. 2chanell PCL86-PP "tube buster" for guitar
  11. Roederstein replacements?
  12. Playin' with feedback
  13. schematic yaqin cd1 tube buffer
  14. Tubelab Simple SE questions
  15. tube preamp
  16. Filament current bias
  17. What Transformer is better ??
  18. DC-coupled CF driver pentode help!
  19. HHScott Forum?
  20. Delay relay
  21. Amp Gain Design Philosophy
  22. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  23. Greetings - Watt Calculation
  24. AES Chocolates?
  25. Power supply filters - sim results
  26. Q............PP Ultrapath
  27. formula help
  28. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  29. Need an HV trafo? Try these:
  30. Driver for Musical Fidelity 550K
  31. Yaqin MC-10l
  32. help with 2 stage cathode follower
  33. B&K 747 tube tester
  34. Screen glowing?
  35. Grid 2 voltage affects
  36. Simple Tube Mono Block Tube Amp Schematic
  37. Optimizing a 807 PP amplifiers input stage and phase splitter...
  38. Chassis Layout Advice
  39. strange Stromberg Carlson
  40. lifting the earth
  41. passive xover w/ SET?
  42. Low gain tube amp?
  43. What to do with these parts?
  44. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  45. SRPP with buffer - 1MOhm impedance?
  46. PSUD2 & g2 on 807 problem..?
  47. 230V transformer for a 832 PP project
  48. Mercury vapour rectifier for George
  49. Replacing 6L6 with 6V6: what changes needed?
  50. 4 tube line level pre?
  51. Tube Hybrid Amp Gain Calculation
  52. transformer coupled plate follower
  53. What does your system look like?
  54. Cascoding tubes
  55. Advice with modification of Beard power amp
  56. Harman Kardon TA5000-X power XFMR
  57. This happens when you hire a good designer.
  58. Test & Measurement interface for Soundcard
  59. Where to find large capacity high voltage caps?
  60. 1st Pass at 1st Phono Preamp; Comments?
  61. Transformers to try.
  62. Hum in phono pre - help please
  63. Output transformer cores
  64. Output transformer cores
  65. Presonus Bluetube makeover
  66. Tube Amp Channel Switching
  67. physically small twin triode tube
  68. Tubelab SE 2A3 _ Newbie question.
  69. TJ Full Music Factory Tour Now Online
  70. where to find cool vol control knobs?
  71. $200 6V6 Amp
  72. Audio Research Reference Phono, anyone?
  73. Review of Suppo Audio's first offering - EL84 Push Pull
  74. 6n23p(-ev)
  75. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  76. TUBE AMP 1946 worth grabbing?
  77. SE Newbie wants to go level 2
  78. Where To Purchase Tube Amp Parts in the UK
  79. The soul of a new "electrostatic" machine
  80. Transformer question
  81. Hybrid caps
  82. 6021 phono pre-amp
  83. bandmaster ab763 fx loop
  84. How to design input stage with specific input impedance/pot value
  85. Simple SE Grounding Question
  86. James OPT connections?
  87. DIY rtp5 help please?
  88. SS Followers to drive power tubes
  89. Sophia Electric EL34 Schematic
  90. DRD amplifier with CCS?
  91. Phono Preamp
  92. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  93. transistor AC blocker
  94. PL519 Source
  95. Identify this mullard
  96. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  97. Beard p35mkII schematics/photo photo
  98. Bias transformer question
  99. Anyone deliberately dial in 2nd harmonic?
  100. What is the sonic impact of SS CCS in tube equipment
  101. Phase help
  102. El34-kt88
  103. Transconductance amplifier based on hybrid cascode
  104. Chinese 6Z4, also those regulated supplies.
  105. Audion Reference restoration
  106. Anyone try a regulated PS in an Ultrapath preamp?
  107. Source for Resistor sets?
  108. High Zout tube preamps with ss power amps.
  109. PSUD II soft start
  110. About the 6AU6s
  111. Capacitor polarity question
  112. Audio Note line preamp question
  113. EL34 SE amp schematic
  114. looking for 12AT7 / ECC81 phase splitter
  115. 6AS7 getting rare?
  116. How to power up a new Build the first time
  117. power transformer for a 2a3se amp!
  118. 6DJ8 Tube Phono and Line Preamp
  119. ST-35 Build Using PC13 Boards Questions and Thoughts
  120. My new hybrid full single ended amplifier project on going
  121. Punch tools for making metal top plates on amps
  122. antique sound lab AQ1009-845 interstage transformer replacement
  123. The search for the ultimate 6SN7
  124. Looking for a good part web store
  125. Need your advice for tube amp case
  126. Questions about grounding
  127. power supply
  128. Strange idea for an output stage - comments requested
  129. Please comment on this EL84 PP design
  130. 1.5VDC Heater Supply For #26!?
  131. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  132. original philips AD-9058
  133. Bench test equipment, What's yours?
  134. Gain calculating in 12ax7 guitar preamp
  135. Tube Lab SE Problem
  136. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  137. Sweep tube info/specs
  138. Help for Tango 300b amp
  139. vacuum tubes type 10 and UX201A
  140. 6DQ5 specs for audio
  141. r-core output transformers...
  142. Isolation Transformer Question
  143. Buffer question?
  144. el95 pp amp for guitar
  145. Two positive rails from a center-tapped transformer?
  146. Help reqd - 115V PTX on 230V
  147. Replacing the cathode resistor with a current source in SE ?
  148. First 300b Design, Please comment
  149. 6AX4 datasheet question
  150. Bias Drift
  151. Recommend me a tube...
  152. What happens when Heater Cathode voltage is exceeded?
  153. 100uF Motor Run Caps
  154. HELP Schematics for RL 12 T 15
  155. Phono Stage
  156. TEE Vee Tube fans' SE Cf Amp
  157. Yaqin MC-10L losing volume
  158. Pl84 tubes
  159. AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
  160. 5150 or slo 5-50w clone
  161. ECC88, warm up time
  162. Yaqin MC-10L Heater Voltage
  163. 6c33 otl amblifier
  164. self-oscillation in Dynaco ST-70
  165. computer tube tester
  166. Troubleshooting the decware se84 kit
  167. 6L6 PP problem
  168. First try at an Eagle Schematic/board
  169. opinions on decware zen kit
  170. Powerdrive for PP amp with local feedback and pentode driver ?
  171. having trouble calculating transconductance
  172. Philips console unit with reverb!
  173. 300BSET with Kimmel style mu driver ?
  174. Testing Mullard 12AU7 on Hickok 600A
  175. EL34/6CA7 driven 300B Schematics
  176. C450 Radio Craftsmen info needed
  177. Tubelab Simple SE v.2
  178. Magnetic shielding with aluminum
  179. lampizator dac
  180. AES is At It Again...
  181. Se Amp with Push Pull Transformer
  182. 6550 which breed can take the flog ?
  183. Chassis Question
  184. EL82 in triode with silverstepper (TVC)
  185. Joined the 12b4 line stage club. And worth it!
  186. ECL86/PCL86 Schematic
  187. Ambient temperature and tubes
  188. Vintage output transformers
  189. -ve grid voltage
  190. Ming Da MC-3008-A2 Mono Blocks
  191. V-Reg, Gyrator, Low (relative) voltage tubes
  192. Simple Tube amp
  193. Jolida 502A replace power switch
  194. Tubelab build selector switch question
  195. Matching tubes pot in old Fenders
  196. tubes supplier
  197. RadioDaze out of the tube business
  198. 8000+ hours on my Simple SE
  199. C-L-C-parallel-R-C
  200. musical power supplies
  201. Trimpots sound better than equivalent resistors for biasing?
  202. Anyone have a simple circuit for . .
  203. PP Tube Biasing, how good is good enough?
  204. Aesthetics
  205. Point to point, from scatch build of the K-12G
  206. What 6550 for Conrad MV75
  207. Motorboating phono input on Stromberg Carlson ASR433
  208. Sunn Sceptre: Weak Vibrato Cause?
  209. Pioneer sr-101
  210. 6AU6 in Push Pull: Opinions please
  211. Audionote M7 and Foreplay III
  212. vintage triode
  213. Help with design review wanted
  214. 6J52P pentode driver?
  215. a gutar amp I built
  216. Looking for a good valve preamp
  217. Anyone try the "Hazen mod" to G3 supressor grid
  218. 6L6GC -Which Shuguang can take the Heat?
  219. Using Toroidal PTs as tube OTs - methods and sources
  220. With a little help... KT88 PP UL Amp
  221. TechTube Featured In November AudioXpress
  222. Yaqin MC-100b channel imbalance
  223. Regulated Tube Preamp question
  224. Has anybody purchased from Mable Audio?
  225. PS voltage changes after capacitor replacement
  226. Non-magnetic bolts that hold an output transformer together
  227. Audio Innovations Series 500 Rewire
  228. Which audio electrolytics in tube voltages -- Your comments please !
  229. Some general opt questions.
  230. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  231. modifying zenith 7d31 amp console
  232. Questions on JE Labs transformer coupled line stage
  233. Onix/Melody SP3 Upgrades and Mods
  234. Motorboating with Regulated Supply
  235. 27 & 6SN7 Preamp - Crossover
  236. Budget 2A3?
  237. first go at design - pp
  238. Tube Amp for MP3 Player
  239. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  240. Marshall amp loses bias
  241. Building the Baby Huey EL84 pushpull amplifier
  242. Tube Voltage Regulator, Is it worth the effort?
  243. Best tubeamp for metal, tight bass
  244. Donor stereo 845 amp- now what!?
  245. "Optimal" output grid loading?
  246. wax poured out!
  247. Yet another do-nothing tOOb hack.
  248. What is a CCS - how do you design one?
  249. Strange Aikido problem when home power fluctuates
  250. Need to regulate 450v --> 300v

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