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  1. where to get good 5AR4 's
  2. Greetings from ETF!
  3. 26 Preamp, Kennedy Version 3
  4. 2chanell PCL86-PP "tube buster" for guitar
  5. Roederstein replacements?
  6. Playin' with feedback
  7. schematic yaqin cd1 tube buffer
  8. Tubelab Simple SE questions
  9. tube preamp
  10. Filament current bias
  11. What Transformer is better ??
  12. DC-coupled CF driver pentode help!
  13. HHScott Forum?
  14. Delay relay
  15. Amp Gain Design Philosophy
  16. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  17. Greetings - Watt Calculation
  18. AES Chocolates?
  19. Power supply filters - sim results
  20. Q............PP Ultrapath
  21. formula help
  22. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  23. Need an HV trafo? Try these:
  24. Driver for Musical Fidelity 550K
  25. Yaqin MC-10l
  26. help with 2 stage cathode follower
  27. B&K 747 tube tester
  28. Screen glowing?
  29. Grid 2 voltage affects
  30. Simple Tube Mono Block Tube Amp Schematic
  31. Optimizing a 807 PP amplifiers input stage and phase splitter...
  32. Chassis Layout Advice
  33. strange Stromberg Carlson
  34. lifting the earth
  35. passive xover w/ SET?
  36. Low gain tube amp?
  37. What to do with these parts?
  38. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  39. SRPP with buffer - 1MOhm impedance?
  40. PSUD2 & g2 on 807 problem..?
  41. 230V transformer for a 832 PP project
  42. Mercury vapour rectifier for George
  43. Replacing 6L6 with 6V6: what changes needed?
  44. 4 tube line level pre?
  45. Tube Hybrid Amp Gain Calculation
  46. transformer coupled plate follower
  47. What does your system look like?
  48. Cascoding tubes
  49. Advice with modification of Beard power amp
  50. Harman Kardon TA5000-X power XFMR
  51. This happens when you hire a good designer.
  52. Test & Measurement interface for Soundcard
  53. Where to find large capacity high voltage caps?
  54. 1st Pass at 1st Phono Preamp; Comments?
  55. Transformers to try.
  56. Hum in phono pre - help please
  57. Output transformer cores
  58. Output transformer cores
  59. Presonus Bluetube makeover
  60. Tube Amp Channel Switching
  61. physically small twin triode tube
  62. Tubelab SE 2A3 _ Newbie question.
  63. TJ Full Music Factory Tour Now Online
  64. where to find cool vol control knobs?
  65. $200 6V6 Amp
  66. Audio Research Reference Phono, anyone?
  67. Review of Suppo Audio's first offering - EL84 Push Pull
  68. 6n23p(-ev)
  69. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  70. TUBE AMP 1946 worth grabbing?
  71. SE Newbie wants to go level 2
  72. Where To Purchase Tube Amp Parts in the UK
  73. The soul of a new "electrostatic" machine
  74. Transformer question
  75. Hybrid caps
  76. 6021 phono pre-amp
  77. bandmaster ab763 fx loop
  78. How to design input stage with specific input impedance/pot value
  79. Simple SE Grounding Question
  80. James OPT connections?
  81. DIY rtp5 help please?
  82. SS Followers to drive power tubes
  83. Sophia Electric EL34 Schematic
  84. DRD amplifier with CCS?
  85. Phono Preamp
  86. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  87. transistor AC blocker
  88. PL519 Source
  89. Identify this mullard
  90. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  91. Beard p35mkII schematics/photo photo
  92. Bias transformer question
  93. Anyone deliberately dial in 2nd harmonic?
  94. What is the sonic impact of SS CCS in tube equipment
  95. Phase help
  96. El34-kt88
  97. Transconductance amplifier based on hybrid cascode
  98. Chinese 6Z4, also those regulated supplies.
  99. Audion Reference restoration
  100. Anyone try a regulated PS in an Ultrapath preamp?
  101. Source for Resistor sets?
  102. High Zout tube preamps with ss power amps.
  103. PSUD II soft start
  104. About the 6AU6s
  105. Capacitor polarity question
  106. Audio Note line preamp question
  107. EL34 SE amp schematic
  108. looking for 12AT7 / ECC81 phase splitter
  109. 6AS7 getting rare?
  110. How to power up a new Build the first time
  111. power transformer for a 2a3se amp!
  112. 6DJ8 Tube Phono and Line Preamp
  113. ST-35 Build Using PC13 Boards Questions and Thoughts
  114. My new hybrid full single ended amplifier project on going
  115. Punch tools for making metal top plates on amps
  116. antique sound lab AQ1009-845 interstage transformer replacement
  117. The search for the ultimate 6SN7
  118. Looking for a good part web store
  119. Need your advice for tube amp case
  120. Questions about grounding
  121. power supply
  122. Strange idea for an output stage - comments requested
  123. Please comment on this EL84 PP design
  124. 1.5VDC Heater Supply For #26!?
  125. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  126. original philips AD-9058
  127. Bench test equipment, What's yours?
  128. Gain calculating in 12ax7 guitar preamp
  129. Tube Lab SE Problem
  130. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  131. Sweep tube info/specs
  132. Help for Tango 300b amp
  133. vacuum tubes type 10 and UX201A
  134. 6DQ5 specs for audio
  135. r-core output transformers...
  136. Isolation Transformer Question
  137. Buffer question?
  138. el95 pp amp for guitar
  139. Two positive rails from a center-tapped transformer?
  140. Help reqd - 115V PTX on 230V
  141. Replacing the cathode resistor with a current source in SE ?
  142. First 300b Design, Please comment
  143. 6AX4 datasheet question
  144. Bias Drift
  145. Recommend me a tube...
  146. What happens when Heater Cathode voltage is exceeded?
  147. 100uF Motor Run Caps
  148. HELP Schematics for RL 12 T 15
  149. Phono Stage
  150. TEE Vee Tube fans' SE Cf Amp
  151. Yaqin MC-10L losing volume
  152. Pl84 tubes
  153. AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
  154. 5150 or slo 5-50w clone
  155. ECC88, warm up time
  156. Yaqin MC-10L Heater Voltage
  157. 6c33 otl amblifier
  158. self-oscillation in Dynaco ST-70
  159. computer tube tester
  160. Troubleshooting the decware se84 kit
  161. 6L6 PP problem
  162. First try at an Eagle Schematic/board
  163. opinions on decware zen kit
  164. Powerdrive for PP amp with local feedback and pentode driver ?
  165. having trouble calculating transconductance
  166. Philips console unit with reverb!
  167. 300BSET with Kimmel style mu driver ?
  168. Testing Mullard 12AU7 on Hickok 600A
  169. EL34/6CA7 driven 300B Schematics
  170. C450 Radio Craftsmen info needed
  171. Tubelab Simple SE v.2
  172. Magnetic shielding with aluminum
  173. lampizator dac
  174. AES is At It Again...
  175. Se Amp with Push Pull Transformer
  176. 6550 which breed can take the flog ?
  177. Chassis Question
  178. EL82 in triode with silverstepper (TVC)
  179. Joined the 12b4 line stage club. And worth it!
  180. ECL86/PCL86 Schematic
  181. Ambient temperature and tubes
  182. Vintage output transformers
  183. -ve grid voltage
  184. Ming Da MC-3008-A2 Mono Blocks
  185. V-Reg, Gyrator, Low (relative) voltage tubes
  186. Simple Tube amp
  187. Jolida 502A replace power switch
  188. Tubelab build selector switch question
  189. Matching tubes pot in old Fenders
  190. tubes supplier
  191. RadioDaze out of the tube business
  192. 8000+ hours on my Simple SE
  193. C-L-C-parallel-R-C
  194. musical power supplies
  195. Trimpots sound better than equivalent resistors for biasing?
  196. Anyone have a simple circuit for . .
  197. PP Tube Biasing, how good is good enough?
  198. Aesthetics
  199. Point to point, from scatch build of the K-12G
  200. What 6550 for Conrad MV75
  201. Motorboating phono input on Stromberg Carlson ASR433
  202. Sunn Sceptre: Weak Vibrato Cause?
  203. Pioneer sr-101
  204. 6AU6 in Push Pull: Opinions please
  205. Audionote M7 and Foreplay III
  206. vintage triode
  207. Help with design review wanted
  208. 6J52P pentode driver?
  209. a gutar amp I built
  210. Looking for a good valve preamp
  211. Anyone try the "Hazen mod" to G3 supressor grid
  212. 6L6GC -Which Shuguang can take the Heat?
  213. Using Toroidal PTs as tube OTs - methods and sources
  214. With a little help... KT88 PP UL Amp
  215. TechTube Featured In November AudioXpress
  216. Yaqin MC-100b channel imbalance
  217. Regulated Tube Preamp question
  218. Has anybody purchased from Mable Audio?
  219. PS voltage changes after capacitor replacement
  220. Non-magnetic bolts that hold an output transformer together
  221. Audio Innovations Series 500 Rewire
  222. Which audio electrolytics in tube voltages -- Your comments please !
  223. Some general opt questions.
  224. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  225. modifying zenith 7d31 amp console
  226. Questions on JE Labs transformer coupled line stage
  227. Onix/Melody SP3 Upgrades and Mods
  228. Motorboating with Regulated Supply
  229. 27 & 6SN7 Preamp - Crossover
  230. Budget 2A3?
  231. first go at design - pp
  232. Tube Amp for MP3 Player
  233. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  234. Marshall amp loses bias
  235. Building the Baby Huey EL84 pushpull amplifier
  236. Tube Voltage Regulator, Is it worth the effort?
  237. Best tubeamp for metal, tight bass
  238. Donor stereo 845 amp- now what!?
  239. "Optimal" output grid loading?
  240. wax poured out!
  241. Yet another do-nothing tOOb hack.
  242. What is a CCS - how do you design one?
  243. Strange Aikido problem when home power fluctuates
  244. Need to regulate 450v --> 300v
  245. new to the forum and looking for el86 info
  246. Why not invert the Tubelab SE board?
  247. Steve Bench Crossover Questions
  248. Audio Note M7 - 7F7 CCS
  249. Anyone have schema for katodcoupled 6C33 P-P?
  250. Ltspice and Valve models

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