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  1. mounting TO-220 devices
  2. My first valve amp - help appreciated :)
  3. Plasma ball in tube
  4. Nagra's engineers at work.
  5. what just happened? Plate glowing
  6. "Mullard 5-20 KT88 PP blocks!
  7. CCS transistor choices
  8. Simple SE parts "Kit"
  9. capacitor upgrade on my tube phono stage
  10. Microphone Preamp
  11. 6N2 swap
  12. K12M / K12G Current Draw
  13. Best china amp?
  14. Hagtech Clarion 2A3 SET
  15. Tubelab Simple SE Schematic
  16. new idea for a tube power amp
  17. help choose between two preamps
  18. Need a MC phono stage, do i need a pre as well?
  19. What the difference between 7591a & 7868
  20. High Voltage Huge Storage CAPS for that Ultimate Valve Amp
  21. Need a good phono stage design..
  22. getting a pop when i power down, help
  23. Japan vs US output tx
  24. My own RIAA tube preamp
  25. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  26. Lab Power Supply
  27. diy MESA pre as 3rd channel on guitar amp? - Need Advise!
  28. Learning to measure question
  29. Anyone using silver secondary (or PSSS) output tx
  30. Cary audio design CAD-211
  31. mains overvoltage what to do?
  32. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  33. Jean Hiraga SE Amplifier Power Supply
  34. TubeLab SE, Finally
  35. channel imbalance!!!! need help
  36. ESRC Dollar Sale - Going, Going...
  37. Post pics of your glowing tubes
  38. PCB Layout for tube amp
  39. 530V low-ish dropout regulator?
  40. were can i get transformers from
  41. 6N9P data sheet
  42. Newbie questions - RH84 mods
  43. TriodeElectronics Mk3 for rank noob?
  44. 5718 preamp
  45. 12B4 the pre for me?
  46. Anyone used C3G to drive a 2A3 before?
  47. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  48. Bogen MX60A Schematics
  49. Nasty pop when I power down
  50. Timer for tube hours
  51. Personal Tube Amp DIY Project
  52. Common cathode linestage with 6080
  53. Fingernail polish?
  54. Tube Lab Simple SE with interstage transformer
  55. Wintersweet HighVividity Amplifer finalized
  56. Iron loaded preamp, any thoughts?
  57. Tetra Phono Preamp as a DAC analog stage
  58. EL84 Plate Dissipation
  59. bogen m330a -> 5f6a bassman
  60. 12AU7 Amp?
  61. Toroidal Chokes
  62. Using a voltage converter transformer
  63. Regulated PSU question
  64. please help me change this
  65. Stromberg-Carlson Identification Help
  66. pi filter variations
  67. How do I change this design from EL34 to 6L6?
  68. Sun Audio SV-300B MKII DIY
  69. 230-115V step down transformer earthing
  70. PP oscillation problem
  71. Wiring a DPDT for direct in & 2-100k mono pots ..?
  72. Arion "ADONIS" Schematics Request
  73. Phono Stage my first try
  74. Maximum gain with 6SN7 ?
  75. Rca 6md8
  76. Getting the DIYer blues again.
  77. EL34 B review Tung-Sol
  78. Please help with my first valve preamp ?
  79. power supply filter choke current rating.
  80. Will and Aikido Driver Stage work?
  81. Bottlehead Foreplay III improvements, suggestions, alternatives?
  82. DC modules fot DHT amps....too expensive to buy pre-built, why not DIY them?
  83. Sprague 183P Question
  84. Load Resistance (Ra) question applied to OTs
  85. B&K 610 connector pinout
  86. Buzzing Volume and presence
  87. 807 pp build project - whose in?
  88. tubelab simple se: increasing the drive
  89. where to buy dn2540 and 10m45 in UK
  90. ecc88 arcing at shutdown problem...
  91. Question - Output Trafo with CFB
  92. Tubelab SE rect. arcing -looking for more info
  93. Looking for a hookup wire supplier
  94. Valves' world
  95. Tube diode for cathode bias?
  96. Trying to get a response from TX maker.pass it on.
  97. Need help choosing a filament supply
  98. Motorola 3 channel Tube Amp from Console
  99. Most compact 90V power supply
  100. Decware output stage
  101. 50FE5-push pull stereo
  102. tamura f-7000 series
  103. Very simple high power single ended
  104. CAD for tubes?
  105. Which tubes are lowest noise?
  106. Stacking/paralleling caps - same value?
  107. where to get good 5AR4 's
  108. Greetings from ETF!
  109. 26 Preamp, Kennedy Version 3
  110. 2chanell PCL86-PP "tube buster" for guitar
  111. Roederstein replacements?
  112. Playin' with feedback
  113. schematic yaqin cd1 tube buffer
  114. Tubelab Simple SE questions
  115. tube preamp
  116. Filament current bias
  117. What Transformer is better ??
  118. DC-coupled CF driver pentode help!
  119. HHScott Forum?
  120. Delay relay
  121. Amp Gain Design Philosophy
  122. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  123. Greetings - Watt Calculation
  124. AES Chocolates?
  125. Power supply filters - sim results
  126. Q............PP Ultrapath
  127. formula help
  128. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  129. Need an HV trafo? Try these:
  130. Driver for Musical Fidelity 550K
  131. Yaqin MC-10l
  132. help with 2 stage cathode follower
  133. B&K 747 tube tester
  134. Screen glowing?
  135. Grid 2 voltage affects
  136. Simple Tube Mono Block Tube Amp Schematic
  137. Optimizing a 807 PP amplifiers input stage and phase splitter...
  138. Chassis Layout Advice
  139. strange Stromberg Carlson
  140. lifting the earth
  141. passive xover w/ SET?
  142. Low gain tube amp?
  143. What to do with these parts?
  144. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  145. SRPP with buffer - 1MOhm impedance?
  146. PSUD2 & g2 on 807 problem..?
  147. 230V transformer for a 832 PP project
  148. Mercury vapour rectifier for George
  149. Replacing 6L6 with 6V6: what changes needed?
  150. 4 tube line level pre?
  151. Tube Hybrid Amp Gain Calculation
  152. transformer coupled plate follower
  153. What does your system look like?
  154. Cascoding tubes
  155. Advice with modification of Beard power amp
  156. Harman Kardon TA5000-X power XFMR
  157. This happens when you hire a good designer.
  158. Test & Measurement interface for Soundcard
  159. Where to find large capacity high voltage caps?
  160. 1st Pass at 1st Phono Preamp; Comments?
  161. Transformers to try.
  162. Hum in phono pre - help please
  163. Output transformer cores
  164. Output transformer cores
  165. Presonus Bluetube makeover
  166. Tube Amp Channel Switching
  167. physically small twin triode tube
  168. Tubelab SE 2A3 _ Newbie question.
  169. TJ Full Music Factory Tour Now Online
  170. where to find cool vol control knobs?
  171. $200 6V6 Amp
  172. Audio Research Reference Phono, anyone?
  173. Review of Suppo Audio's first offering - EL84 Push Pull
  174. 6n23p(-ev)
  175. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  176. TUBE AMP 1946 worth grabbing?
  177. SE Newbie wants to go level 2
  178. Where To Purchase Tube Amp Parts in the UK
  179. The soul of a new "electrostatic" machine
  180. Transformer question
  181. Hybrid caps
  182. 6021 phono pre-amp
  183. bandmaster ab763 fx loop
  184. How to design input stage with specific input impedance/pot value
  185. Simple SE Grounding Question
  186. James OPT connections?
  187. DIY rtp5 help please?
  188. SS Followers to drive power tubes
  189. Sophia Electric EL34 Schematic
  190. DRD amplifier with CCS?
  191. Phono Preamp
  192. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  193. transistor AC blocker
  194. PL519 Source
  195. Identify this mullard
  196. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  197. Beard p35mkII schematics/photo photo
  198. Bias transformer question
  199. Anyone deliberately dial in 2nd harmonic?
  200. What is the sonic impact of SS CCS in tube equipment
  201. Phase help
  202. El34-kt88
  203. Transconductance amplifier based on hybrid cascode
  204. Chinese 6Z4, also those regulated supplies.
  205. Audion Reference restoration
  206. Anyone try a regulated PS in an Ultrapath preamp?
  207. Source for Resistor sets?
  208. High Zout tube preamps with ss power amps.
  209. PSUD II soft start
  210. About the 6AU6s
  211. Capacitor polarity question
  212. Audio Note line preamp question
  213. EL34 SE amp schematic
  214. looking for 12AT7 / ECC81 phase splitter
  215. 6AS7 getting rare?
  216. How to power up a new Build the first time
  217. power transformer for a 2a3se amp!
  218. 6DJ8 Tube Phono and Line Preamp
  219. ST-35 Build Using PC13 Boards Questions and Thoughts
  220. My new hybrid full single ended amplifier project on going
  221. Punch tools for making metal top plates on amps
  222. antique sound lab AQ1009-845 interstage transformer replacement
  223. The search for the ultimate 6SN7
  224. Looking for a good part web store
  225. Need your advice for tube amp case
  226. Questions about grounding
  227. power supply
  228. Strange idea for an output stage - comments requested
  229. Please comment on this EL84 PP design
  230. 1.5VDC Heater Supply For #26!?
  231. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  232. original philips AD-9058
  233. Bench test equipment, What's yours?
  234. Gain calculating in 12ax7 guitar preamp
  235. Tube Lab SE Problem
  236. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  237. Sweep tube info/specs
  238. Help for Tango 300b amp
  239. vacuum tubes type 10 and UX201A
  240. 6DQ5 specs for audio
  241. r-core output transformers...
  242. Isolation Transformer Question
  243. Buffer question?
  244. el95 pp amp for guitar
  245. Two positive rails from a center-tapped transformer?
  246. Help reqd - 115V PTX on 230V
  247. Replacing the cathode resistor with a current source in SE ?
  248. First 300b Design, Please comment
  249. 6AX4 datasheet question
  250. Bias Drift

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