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  1. Sonic Frontiers SFP-1 mods?
  2. AES tube brand mixing..
  3. Hum with EL84 Push-Pull
  4. Low Voltage Tube Preamplifier
  5. 27 driving 2A3/45/ or 300B
  6. Tube pre-amp for a vehicle?
  7. Meng Yue Mini schematic?
  8. Do you know this guy?
  9. Triode Pentode combo tubes
  10. M8136 M8137 Mullard
  11. suppo with vinyl?
  12. small binding post for TT ground
  13. 27 Filaments DC in series
  14. Music Angel KT88 hard wired
  15. Nice! First CCS.
  16. bizarre bias, ST-70 experts step inside
  17. hammond power tx 200series update
  18. What is the best tube amp??
  19. NASA space-age tube for audio use
  20. ECL86/6GW8 Console opinions
  21. Bad tubes wanted for tester testing
  22. 7868 tube biasing and output trans protection
  23. second build, recommendations , thoughts
  24. Changing Electra-Print DRD45
  25. ruTubes.com. Anyone dealt with them?
  26. output transformer manufacturer
  27. no resistor values........
  28. Gz34 + otl 6n23p
  29. Jukebox Iron
  30. converting tube rectifier to solid state rectifier.
  31. Help please, Jolida 202a hum.
  32. Amperex Bugle Boy tube???
  33. What's a reasonable amount of power-supply ripple?
  34. Vintage tube amp Aux In To CD In
  35. My first valve amp - help appreciated :)
  36. Plasma ball in tube
  37. Nagra's engineers at work.
  38. what just happened? Plate glowing
  39. "Mullard 5-20 KT88 PP blocks!
  40. CCS transistor choices
  41. capacitor upgrade on my tube phono stage
  42. Microphone Preamp
  43. 6N2 swap
  44. K12M / K12G Current Draw
  45. Best china amp?
  46. Hagtech Clarion 2A3 SET
  47. new idea for a tube power amp
  48. help choose between two preamps
  49. Need a MC phono stage, do i need a pre as well?
  50. What the difference between 7591a & 7868
  51. Need a good phono stage design..
  52. getting a pop when i power down, help
  53. Japan vs US output tx
  54. My own RIAA tube preamp
  55. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  56. Anyone using silver secondary (or PSSS) output tx
  57. Cary audio design CAD-211
  58. mains overvoltage what to do?
  59. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  60. Jean Hiraga SE Amplifier Power Supply
  61. channel imbalance!!!! need help
  62. ESRC Dollar Sale - Going, Going...
  63. Post pics of your glowing tubes
  64. PCB Layout for tube amp
  65. 530V low-ish dropout regulator?
  66. were can i get transformers from
  67. 6N9P data sheet
  68. Newbie questions - RH84 mods
  69. TriodeElectronics Mk3 for rank noob?
  70. 5718 preamp
  71. 12B4 the pre for me?
  72. Anyone used C3G to drive a 2A3 before?
  73. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  74. Bogen MX60A Schematics
  75. Nasty pop when I power down
  76. Timer for tube hours
  77. Personal Tube Amp DIY Project
  78. Common cathode linestage with 6080
  79. Fingernail polish?
  80. Wintersweet HighVividity Amplifer finalized
  81. Iron loaded preamp, any thoughts?
  82. Tetra Phono Preamp as a DAC analog stage
  83. EL84 Plate Dissipation
  84. 12AU7 Amp?
  85. Toroidal Chokes
  86. Using a voltage converter transformer
  87. Regulated PSU question
  88. please help me change this
  89. Stromberg-Carlson Identification Help
  90. pi filter variations
  91. How do I change this design from EL34 to 6L6?
  92. Sun Audio SV-300B MKII DIY
  93. 230-115V step down transformer earthing
  94. PP oscillation problem
  95. Wiring a DPDT for direct in & 2-100k mono pots ..?
  96. Arion "ADONIS" Schematics Request
  97. Phono Stage my first try
  98. Maximum gain with 6SN7 ?
  99. Rca 6md8
  100. Getting the DIYer blues again.
  101. EL34 B review Tung-Sol
  102. Please help with my first valve preamp ?
  103. power supply filter choke current rating.
  104. Will and Aikido Driver Stage work?
  105. Bottlehead Foreplay III improvements, suggestions, alternatives?
  106. DC modules fot DHT amps....too expensive to buy pre-built, why not DIY them?
  107. Load Resistance (Ra) question applied to OTs
  108. 807 pp build project - whose in?
  109. where to buy dn2540 and 10m45 in UK
  110. ecc88 arcing at shutdown problem...
  111. Question - Output Trafo with CFB
  112. Valves' world
  113. Tube diode for cathode bias?
  114. Trying to get a response from TX maker.pass it on.
  115. Need help choosing a filament supply
  116. Motorola 3 channel Tube Amp from Console
  117. Decware output stage
  118. 50FE5-push pull stereo
  119. tamura f-7000 series
  120. Very simple high power single ended
  121. Which tubes are lowest noise?
  122. where to get good 5AR4 's
  123. Greetings from ETF!
  124. 26 Preamp, Kennedy Version 3
  125. Playin' with feedback
  126. schematic yaqin cd1 tube buffer
  127. tube preamp
  128. Filament current bias
  129. What Transformer is better ??
  130. DC-coupled CF driver pentode help!
  131. HHScott Forum?
  132. Amp Gain Design Philosophy
  133. Greetings - Watt Calculation
  134. AES Chocolates?
  135. Power supply filters - sim results
  136. Q............PP Ultrapath
  137. formula help
  138. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  139. Need an HV trafo? Try these:
  140. Driver for Musical Fidelity 550K
  141. Yaqin MC-10l
  142. help with 2 stage cathode follower
  143. Screen glowing?
  144. Grid 2 voltage affects
  145. Simple Tube Mono Block Tube Amp Schematic
  146. Optimizing a 807 PP amplifiers input stage and phase splitter...
  147. Chassis Layout Advice
  148. strange Stromberg Carlson
  149. lifting the earth
  150. passive xover w/ SET?
  151. Low gain tube amp?
  152. What to do with these parts?
  153. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  154. SRPP with buffer - 1MOhm impedance?
  155. PSUD2 & g2 on 807 problem..?
  156. 230V transformer for a 832 PP project
  157. Mercury vapour rectifier for George
  158. Replacing 6L6 with 6V6: what changes needed?
  159. 4 tube line level pre?
  160. Tube Hybrid Amp Gain Calculation
  161. transformer coupled plate follower
  162. What does your system look like?
  163. Cascoding tubes
  164. Advice with modification of Beard power amp
  165. Harman Kardon TA5000-X power XFMR
  166. This happens when you hire a good designer.
  167. 1st Pass at 1st Phono Preamp; Comments?
  168. Transformers to try.
  169. Hum in phono pre - help please
  170. Presonus Bluetube makeover
  171. Tube Amp Channel Switching
  172. physically small twin triode tube
  173. TJ Full Music Factory Tour Now Online
  174. where to find cool vol control knobs?
  175. $200 6V6 Amp
  176. Audio Research Reference Phono, anyone?
  177. Review of Suppo Audio's first offering - EL84 Push Pull
  178. 6n23p(-ev)
  179. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  180. TUBE AMP 1946 worth grabbing?
  181. SE Newbie wants to go level 2
  182. Where To Purchase Tube Amp Parts in the UK
  183. The soul of a new "electrostatic" machine
  184. Transformer question
  185. 6021 phono pre-amp
  186. How to design input stage with specific input impedance/pot value
  187. James OPT connections?
  188. DIY rtp5 help please?
  189. SS Followers to drive power tubes
  190. Sophia Electric EL34 Schematic
  191. DRD amplifier with CCS?
  192. Phono Preamp
  193. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  194. transistor AC blocker
  195. PL519 Source
  196. Identify this mullard
  197. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  198. Beard p35mkII schematics/photo photo
  199. Bias transformer question
  200. Anyone deliberately dial in 2nd harmonic?
  201. What is the sonic impact of SS CCS in tube equipment
  202. Phase help
  203. El34-kt88
  204. Transconductance amplifier based on hybrid cascode
  205. Chinese 6Z4, also those regulated supplies.
  206. Audion Reference restoration
  207. Anyone try a regulated PS in an Ultrapath preamp?
  208. High Zout tube preamps with ss power amps.
  209. PSUD II soft start
  210. About the 6AU6s
  211. Audio Note line preamp question
  212. EL34 SE amp schematic
  213. looking for 12AT7 / ECC81 phase splitter
  214. 6AS7 getting rare?
  215. How to power up a new Build the first time
  216. power transformer for a 2a3se amp!
  217. 6DJ8 Tube Phono and Line Preamp
  218. ST-35 Build Using PC13 Boards Questions and Thoughts
  219. My new hybrid full single ended amplifier project on going
  220. antique sound lab AQ1009-845 interstage transformer replacement
  221. The search for the ultimate 6SN7
  222. Looking for a good part web store
  223. Need your advice for tube amp case
  224. Questions about grounding
  225. power supply
  226. Strange idea for an output stage - comments requested
  227. Please comment on this EL84 PP design
  228. 1.5VDC Heater Supply For #26!?
  229. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  230. original philips AD-9058
  231. Bench test equipment, What's yours?
  232. Tube Lab SE Problem
  233. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  234. Sweep tube info/specs
  235. Help for Tango 300b amp
  236. vacuum tubes type 10 and UX201A
  237. 6DQ5 specs for audio
  238. r-core output transformers...
  239. Buffer question?
  240. Two positive rails from a center-tapped transformer?
  241. Help reqd - 115V PTX on 230V
  242. Replacing the cathode resistor with a current source in SE ?
  243. First 300b Design, Please comment
  244. 6AX4 datasheet question
  245. Bias Drift
  246. Recommend me a tube...
  247. What happens when Heater Cathode voltage is exceeded?
  248. HELP Schematics for RL 12 T 15
  249. Phono Stage
  250. TEE Vee Tube fans' SE Cf Amp

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