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  1. Lab Power Supply
  2. diy MESA pre as 3rd channel on guitar amp? - Need Advise!
  3. Learning to measure question
  4. Anyone using silver secondary (or PSSS) output tx
  5. Cary audio design CAD-211
  6. mains overvoltage what to do?
  7. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  8. Jean Hiraga SE Amplifier Power Supply
  9. TubeLab SE, Finally
  10. channel imbalance!!!! need help
  11. ESRC Dollar Sale - Going, Going...
  12. Post pics of your glowing tubes
  13. PCB Layout for tube amp
  14. 530V low-ish dropout regulator?
  15. were can i get transformers from
  16. 6N9P data sheet
  17. Newbie questions - RH84 mods
  18. TriodeElectronics Mk3 for rank noob?
  19. 5718 preamp
  20. 12B4 the pre for me?
  21. Anyone used C3G to drive a 2A3 before?
  22. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  23. Bogen MX60A Schematics
  24. Nasty pop when I power down
  25. Timer for tube hours
  26. Personal Tube Amp DIY Project
  27. Common cathode linestage with 6080
  28. Fingernail polish?
  29. Tube Lab Simple SE with interstage transformer
  30. Wintersweet HighVividity Amplifer finalized
  31. Iron loaded preamp, any thoughts?
  32. Tetra Phono Preamp as a DAC analog stage
  33. EL84 Plate Dissipation
  34. bogen m330a -> 5f6a bassman
  35. 12AU7 Amp?
  36. Toroidal Chokes
  37. Using a voltage converter transformer
  38. Regulated PSU question
  39. please help me change this
  40. Stromberg-Carlson Identification Help
  41. pi filter variations
  42. How do I change this design from EL34 to 6L6?
  43. Sun Audio SV-300B MKII DIY
  44. 230-115V step down transformer earthing
  45. PP oscillation problem
  46. Wiring a DPDT for direct in & 2-100k mono pots ..?
  47. Arion "ADONIS" Schematics Request
  48. Phono Stage – my first try
  49. Maximum gain with 6SN7 ?
  50. Rca 6md8
  51. Getting the DIYer blues again.
  52. EL34 B review Tung-Sol
  53. Please help with my first valve preamp ?
  54. power supply filter choke current rating.
  55. Will and Aikido Driver Stage work?
  56. Bottlehead Foreplay III improvements, suggestions, alternatives?
  57. DC modules fot DHT amps....too expensive to buy pre-built, why not DIY them?
  58. Sprague 183P Question
  59. Load Resistance (Ra) question applied to OTs
  60. B&K 610 connector pinout
  61. Buzzing Volume and presence
  62. 807 pp build project - whose in?
  63. tubelab simple se: increasing the drive
  64. where to buy dn2540 and 10m45 in UK
  65. ecc88 arcing at shutdown problem...
  66. Question - Output Trafo with CFB
  67. Tubelab SE rect. arcing -looking for more info
  68. Looking for a hookup wire supplier
  69. Valves' world
  70. Tube diode for cathode bias?
  71. Trying to get a response from TX maker.pass it on.
  72. Need help choosing a filament supply
  73. Motorola 3 channel Tube Amp from Console
  74. Most compact 90V power supply
  75. Decware output stage
  76. 50FE5-push pull stereo
  77. tamura f-7000 series
  78. Very simple high power single ended
  79. CAD for tubes?
  80. Which tubes are lowest noise?
  81. Stacking/paralleling caps - same value?
  82. where to get good 5AR4 's
  83. Greetings from ETF!
  84. 26 Preamp, Kennedy Version 3
  85. 2chanell PCL86-PP "tube buster" for guitar
  86. Roederstein replacements?
  87. Playin' with feedback
  88. schematic yaqin cd1 tube buffer
  89. Tubelab Simple SE questions
  90. tube preamp
  91. Filament current bias
  92. What Transformer is better ??
  93. DC-coupled CF driver pentode help!
  94. HHScott Forum?
  95. Delay relay
  96. Amp Gain Design Philosophy
  97. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  98. Greetings - Watt Calculation
  99. AES Chocolates?
  100. Power supply filters - sim results
  101. Q............PP Ultrapath
  102. formula help
  103. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  104. Need an HV trafo? Try these:
  105. Driver for Musical Fidelity 550K
  106. Yaqin MC-10l
  107. help with 2 stage cathode follower
  108. B&K 747 tube tester
  109. Screen glowing?
  110. Grid 2 voltage affects
  111. Simple Tube Mono Block Tube Amp Schematic
  112. Optimizing a 807 PP amplifiers input stage and phase splitter...
  113. Chassis Layout Advice
  114. strange Stromberg Carlson
  115. lifting the earth
  116. passive xover w/ SET?
  117. Low gain tube amp?
  118. What to do with these parts?
  119. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  120. SRPP with buffer - 1MOhm impedance?
  121. PSUD2 & g2 on 807 problem..?
  122. 230V transformer for a 832 PP project
  123. Mercury vapour rectifier for George
  124. Replacing 6L6 with 6V6: what changes needed?
  125. 4 tube line level pre?
  126. Tube Hybrid Amp Gain Calculation
  127. transformer coupled plate follower
  128. What does your system look like?
  129. Cascoding tubes
  130. Advice with modification of Beard power amp
  131. Harman Kardon TA5000-X power XFMR
  132. This happens when you hire a good designer.
  133. Test & Measurement interface for Soundcard
  134. Where to find large capacity high voltage caps?
  135. 1st Pass at 1st Phono Preamp; Comments?
  136. Transformers to try.
  137. Hum in phono pre - help please
  138. Output transformer cores
  139. Output transformer cores
  140. Presonus Bluetube makeover
  141. Tube Amp Channel Switching
  142. physically small twin triode tube
  143. Tubelab SE 2A3 _ Newbie question.
  144. TJ Full Music Factory Tour Now Online
  145. where to find cool vol control knobs?
  146. $200 6V6 Amp
  147. Audio Research Reference Phono, anyone?
  148. Review of Suppo Audio's first offering - EL84 Push Pull
  149. 6n23p(-ev)
  150. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  151. TUBE AMP 1946 worth grabbing?
  152. SE Newbie wants to go level 2
  153. Where To Purchase Tube Amp Parts in the UK
  154. The soul of a new "electrostatic" machine
  155. Transformer question
  156. Hybrid caps
  157. 6021 phono pre-amp
  158. bandmaster ab763 fx loop
  159. How to design input stage with specific input impedance/pot value
  160. Simple SE Grounding Question
  161. James OPT connections?
  162. DIY rtp5 help please?
  163. SS Followers to drive power tubes
  164. Sophia Electric EL34 Schematic
  165. DRD amplifier with CCS?
  166. Phono Preamp
  167. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  168. transistor AC blocker
  169. PL519 Source
  170. Identify this mullard
  171. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  172. Beard p35mkII schematics/photo photo
  173. Bias transformer question
  174. Anyone deliberately dial in 2nd harmonic?
  175. What is the sonic impact of SS CCS in tube equipment
  176. Phase help
  177. El34-kt88
  178. Transconductance amplifier based on hybrid cascode
  179. Chinese 6Z4, also those regulated supplies.
  180. Audion Reference restoration
  181. Anyone try a regulated PS in an Ultrapath preamp?
  182. Source for Resistor sets?
  183. High Zout tube preamps with ss power amps.
  184. PSUD II soft start
  185. About the 6AU6s
  186. Capacitor polarity question
  187. Audio Note line preamp question
  188. EL34 SE amp schematic
  189. looking for 12AT7 / ECC81 phase splitter
  190. 6AS7 getting rare?
  191. How to power up a new Build the first time
  192. power transformer for a 2a3se amp!
  193. 6DJ8 Tube Phono and Line Preamp
  194. ST-35 Build Using PC13 Boards Questions and Thoughts
  195. My new hybrid full single ended amplifier project on going
  196. Punch tools for making metal top plates on amps
  197. antique sound lab AQ1009-845 interstage transformer replacement
  198. The search for the ultimate 6SN7
  199. Looking for a good part web store
  200. Need your advice for tube amp case
  201. Questions about grounding
  202. power supply
  203. Strange idea for an output stage - comments requested
  204. Please comment on this EL84 PP design
  205. 1.5VDC Heater Supply For #26!?
  206. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  207. original philips AD-9058
  208. Bench test equipment, What's yours?
  209. Gain calculating in 12ax7 guitar preamp
  210. Tube Lab SE Problem
  211. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  212. Sweep tube info/specs
  213. Help for Tango 300b amp
  214. vacuum tubes type 10 and UX201A
  215. 6DQ5 specs for audio
  216. r-core output transformers...
  217. Isolation Transformer Question
  218. Buffer question?
  219. el95 pp amp for guitar
  220. Two positive rails from a center-tapped transformer?
  221. Help reqd - 115V PTX on 230V
  222. Replacing the cathode resistor with a current source in SE ?
  223. First 300b Design, Please comment
  224. 6AX4 datasheet question
  225. Bias Drift
  226. Recommend me a tube...
  227. What happens when Heater Cathode voltage is exceeded?
  228. 100uF Motor Run Caps
  229. HELP Schematics for RL 12 T 15
  230. Phono Stage
  231. TEE Vee Tube fans' SE Cf Amp
  232. Yaqin MC-10L losing volume
  233. Pl84 tubes
  234. AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
  235. 5150 or slo 5-50w clone
  236. ECC88, warm up time
  237. Yaqin MC-10L Heater Voltage
  238. 6c33 otl amblifier
  239. self-oscillation in Dynaco ST-70
  240. computer tube tester
  241. Troubleshooting the decware se84 kit
  242. 6L6 PP problem
  243. First try at an Eagle Schematic/board
  244. opinions on decware zen kit
  245. Powerdrive for PP amp with local feedback and pentode driver ?
  246. having trouble calculating transconductance
  247. Philips console unit with reverb!
  248. 300BSET with Kimmel style mu driver ?
  249. Testing Mullard 12AU7 on Hickok 600A
  250. EL34/6CA7 driven 300B Schematics