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  1. nM scale Valves
  2. Orientation of E-I core OPT and toroidal power transformer
  3. Baldwin Iron
  4. Carver super 7
  5. Question:disadvantages for using a SE OPT on parafeed?
  6. CF after gain stage
  7. New to Tubes, just bought first tube amp
  8. Sonic Frontiers SFP-1 mods?
  9. AES tube brand mixing..
  10. Hum with EL84 Push-Pull
  11. Low Voltage Tube Preamplifier
  12. 27 driving 2A3/45/ or 300B
  13. Tube pre-amp for a vehicle?
  14. Meng Yue Mini schematic?
  15. Do you know this guy?
  16. Triode Pentode combo tubes
  17. M8136 M8137 Mullard
  18. suppo with vinyl?
  19. small binding post for TT ground
  20. 27 Filaments DC in series
  21. Music Angel KT88 hard wired
  22. Nice! First CCS.
  23. bizarre bias, ST-70 experts step inside
  24. hammond power tx 200series update
  25. Volts D.C. panel meter for B+
  26. What is the best tube amp??
  27. 6GM8 Hickok test settings?
  28. NASA space-age tube for audio use
  29. trouble matching line level to guitar amp input level...any help?
  30. ECL86/6GW8 Console opinions
  31. Bad tubes wanted for tester testing
  32. 7868 tube biasing and output trans protection
  33. second build, recommendations , thoughts
  34. Changing Electra-Print DRD45
  35. ruTubes.com. Anyone dealt with them?
  36. output transformer manufacturer
  37. no resistor values........
  38. Gz34 + otl 6n23p
  39. Jukebox Iron
  40. converting tube rectifier to solid state rectifier.
  41. Help please, Jolida 202a hum.
  42. Amperex Bugle Boy tube???
  43. What's a reasonable amount of power-supply ripple?
  44. Vintage tube amp Aux In To CD In
  45. mounting TO-220 devices
  46. My first valve amp - help appreciated :)
  47. Plasma ball in tube
  48. Nagra's engineers at work.
  49. what just happened? Plate glowing
  50. "Mullard 5-20 KT88 PP blocks!
  51. CCS transistor choices
  52. Simple SE parts "Kit"
  53. capacitor upgrade on my tube phono stage
  54. Microphone Preamp
  55. 6N2 swap
  56. K12M / K12G Current Draw
  57. Best china amp?
  58. Hagtech Clarion 2A3 SET
  59. Tubelab Simple SE Schematic
  60. new idea for a tube power amp
  61. help choose between two preamps
  62. Need a MC phono stage, do i need a pre as well?
  63. What the difference between 7591a & 7868
  64. High Voltage Huge Storage CAPS for that Ultimate Valve Amp
  65. Need a good phono stage design..
  66. getting a pop when i power down, help
  67. Japan vs US output tx
  68. My own RIAA tube preamp
  69. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  70. Lab Power Supply
  71. diy MESA pre as 3rd channel on guitar amp? - Need Advise!
  72. Learning to measure question
  73. Anyone using silver secondary (or PSSS) output tx
  74. Cary audio design CAD-211
  75. mains overvoltage what to do?
  76. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  77. Jean Hiraga SE Amplifier Power Supply
  78. TubeLab SE, Finally
  79. channel imbalance!!!! need help
  80. ESRC Dollar Sale - Going, Going...
  81. Post pics of your glowing tubes
  82. PCB Layout for tube amp
  83. 530V low-ish dropout regulator?
  84. were can i get transformers from
  85. 6N9P data sheet
  86. Newbie questions - RH84 mods
  87. TriodeElectronics Mk3 for rank noob?
  88. 5718 preamp
  89. 12B4 the pre for me?
  90. Anyone used C3G to drive a 2A3 before?
  91. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  92. Bogen MX60A Schematics
  93. Nasty pop when I power down
  94. Timer for tube hours
  95. Personal Tube Amp DIY Project
  96. Common cathode linestage with 6080
  97. Fingernail polish?
  98. Tube Lab Simple SE with interstage transformer
  99. Wintersweet HighVividity Amplifer finalized
  100. Iron loaded preamp, any thoughts?
  101. Tetra Phono Preamp as a DAC analog stage
  102. EL84 Plate Dissipation
  103. bogen m330a -> 5f6a bassman
  104. 12AU7 Amp?
  105. Toroidal Chokes
  106. Using a voltage converter transformer
  107. Regulated PSU question
  108. please help me change this
  109. Stromberg-Carlson Identification Help
  110. pi filter variations
  111. How do I change this design from EL34 to 6L6?
  112. Sun Audio SV-300B MKII DIY
  113. 230-115V step down transformer earthing
  114. PP oscillation problem
  115. Wiring a DPDT for direct in & 2-100k mono pots ..?
  116. Arion "ADONIS" Schematics Request
  117. Phono Stage my first try
  118. Maximum gain with 6SN7 ?
  119. Rca 6md8
  120. Getting the DIYer blues again.
  121. EL34 B review Tung-Sol
  122. Please help with my first valve preamp ?
  123. power supply filter choke current rating.
  124. Will and Aikido Driver Stage work?
  125. Bottlehead Foreplay III improvements, suggestions, alternatives?
  126. DC modules fot DHT amps....too expensive to buy pre-built, why not DIY them?
  127. Sprague 183P Question
  128. Load Resistance (Ra) question applied to OTs
  129. B&K 610 connector pinout
  130. Buzzing Volume and presence
  131. 807 pp build project - whose in?
  132. tubelab simple se: increasing the drive
  133. where to buy dn2540 and 10m45 in UK
  134. ecc88 arcing at shutdown problem...
  135. Question - Output Trafo with CFB
  136. Tubelab SE rect. arcing -looking for more info
  137. Looking for a hookup wire supplier
  138. Valves' world
  139. Tube diode for cathode bias?
  140. Trying to get a response from TX maker.pass it on.
  141. Need help choosing a filament supply
  142. Motorola 3 channel Tube Amp from Console
  143. Most compact 90V power supply
  144. Decware output stage
  145. 50FE5-push pull stereo
  146. tamura f-7000 series
  147. Very simple high power single ended
  148. CAD for tubes?
  149. Which tubes are lowest noise?
  150. Stacking/paralleling caps - same value?
  151. where to get good 5AR4 's
  152. Greetings from ETF!
  153. 26 Preamp, Kennedy Version 3
  154. 2chanell PCL86-PP "tube buster" for guitar
  155. Roederstein replacements?
  156. Playin' with feedback
  157. schematic yaqin cd1 tube buffer
  158. Tubelab Simple SE questions
  159. tube preamp
  160. Filament current bias
  161. What Transformer is better ??
  162. DC-coupled CF driver pentode help!
  163. HHScott Forum?
  164. Delay relay
  165. Amp Gain Design Philosophy
  166. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  167. Greetings - Watt Calculation
  168. AES Chocolates?
  169. Power supply filters - sim results
  170. Q............PP Ultrapath
  171. formula help
  172. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  173. Need an HV trafo? Try these:
  174. Driver for Musical Fidelity 550K
  175. Yaqin MC-10l
  176. help with 2 stage cathode follower
  177. B&K 747 tube tester
  178. Screen glowing?
  179. Grid 2 voltage affects
  180. Simple Tube Mono Block Tube Amp Schematic
  181. Optimizing a 807 PP amplifiers input stage and phase splitter...
  182. Chassis Layout Advice
  183. strange Stromberg Carlson
  184. lifting the earth
  185. passive xover w/ SET?
  186. Low gain tube amp?
  187. What to do with these parts?
  188. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  189. SRPP with buffer - 1MOhm impedance?
  190. PSUD2 & g2 on 807 problem..?
  191. 230V transformer for a 832 PP project
  192. Mercury vapour rectifier for George
  193. Replacing 6L6 with 6V6: what changes needed?
  194. 4 tube line level pre?
  195. Tube Hybrid Amp Gain Calculation
  196. transformer coupled plate follower
  197. What does your system look like?
  198. Cascoding tubes
  199. Advice with modification of Beard power amp
  200. Harman Kardon TA5000-X power XFMR
  201. This happens when you hire a good designer.
  202. Test & Measurement interface for Soundcard
  203. Where to find large capacity high voltage caps?
  204. 1st Pass at 1st Phono Preamp; Comments?
  205. Transformers to try.
  206. Hum in phono pre - help please
  207. Output transformer cores
  208. Output transformer cores
  209. Presonus Bluetube makeover
  210. Tube Amp Channel Switching
  211. physically small twin triode tube
  212. Tubelab SE 2A3 _ Newbie question.
  213. TJ Full Music Factory Tour Now Online
  214. where to find cool vol control knobs?
  215. $200 6V6 Amp
  216. Audio Research Reference Phono, anyone?
  217. Review of Suppo Audio's first offering - EL84 Push Pull
  218. 6n23p(-ev)
  219. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  220. TUBE AMP 1946 worth grabbing?
  221. SE Newbie wants to go level 2
  222. Where To Purchase Tube Amp Parts in the UK
  223. The soul of a new "electrostatic" machine
  224. Transformer question
  225. Hybrid caps
  226. 6021 phono pre-amp
  227. bandmaster ab763 fx loop
  228. How to design input stage with specific input impedance/pot value
  229. Simple SE Grounding Question
  230. James OPT connections?
  231. DIY rtp5 help please?
  232. SS Followers to drive power tubes
  233. Sophia Electric EL34 Schematic
  234. DRD amplifier with CCS?
  235. Phono Preamp
  236. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  237. transistor AC blocker
  238. PL519 Source
  239. Identify this mullard
  240. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  241. Beard p35mkII schematics/photo photo
  242. Bias transformer question
  243. Anyone deliberately dial in 2nd harmonic?
  244. What is the sonic impact of SS CCS in tube equipment
  245. Phase help
  246. El34-kt88
  247. Transconductance amplifier based on hybrid cascode
  248. Chinese 6Z4, also those regulated supplies.
  249. Audion Reference restoration
  250. Anyone try a regulated PS in an Ultrapath preamp?

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