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  1. NOS/NIB tubes what does it mean?
  2. Help to identify transformers
  3. DIY tube amp power supply
  4. Socket Saver
  5. Need some tube help!
  6. Need Help Biasing TRV-M300SE Amps
  7. Will this supply work?
  8. First foray into SET, design for your comment
  9. Help understanding a few Ohm's law calculations
  10. Hum in left channer - rogers cadet 3
  11. Need help on understanding AudioResearch like output stage
  12. Help finding 2A3 integrated 2 stage design
  13. 75 / 2A6 Spice Model?
  14. Vacuum Tube DAC
  15. Need help wiring CT transformer
  16. What is this component in my tube amp?
  17. What type of amp should I make with this? Schematic help also needed
  18. 6418 tube preamplifier - Oatley Electronics
  19. Black out coused demage in tube output stage
  20. Need help adding a master volume, and some troubleshooting ...
  21. Other uses for your 807's
  22. Ballantyne output Iron
  23. Power Trafo & Choke headroom
  24. Bare R Cores and bobbins, where???
  25. Plate chokes
  26. Has anyone done anything with the 6112 tube?
  27. el84 amp advice
  28. About to be scammed - bigtime
  29. Dynaco PAS3 -- New Cap board installed
  30. Loose Tube Bases
  31. 12E1 Triode PP, Any Suggestion?
  32. dac output stage with 5687 pp
  33. Baby Tube Subwoofer Amp help wanted
  34. "The Bursar" Push-Pull Amplifier
  35. EL34 schematic question
  36. Newb B9A question
  37. Recommend me a KT88/6550 + 7N7 (6SN7) Schematic!
  38. 01A tube amp Schematic???
  39. Are there elegant ways to prevent huge power-on plops?
  40. New EL84 Push-Pull Monoblock
  41. Just to laugh...
  42. QUAD II Stereo Set Up
  43. hammond ao68/7591 question
  44. 6SN7/6SN7 Aikido + CS4398 DAC = HEAVEN
  45. How to run a square wave test on an OPT??
  46. Vanderveen 73 Watt valve amplifier PR20HE-S2
  47. 6LU8 Spud - Request for comments
  48. Increasing Output Power for the Engineer's Amplifier
  49. Amperex
  50. A Single Ended presentation
  51. Single-endet Stereo Amp KT88, 6L6, 6P3S
  52. My new 6H30 pre
  53. amplifier bias
  54. Distortion measurements on Meng 6P1
  55. What's wrong with SE Cad?
  56. Observations
  57. p2p aikido phono finished!
  58. 6AC10 tubes
  59. Tricked On Ebay!
  60. Last newbe queston for today, shielding
  61. Pot actoss the filaments
  62. How to adjust summetry?
  63. Tube swap THD
  64. Yarland 34A - Crunch sound, now not the same, any ideas?
  65. Amp SE using F2a tube
  66. WEST-CAP, How about sonic reputation
  67. New 300B JEL/Walton Builder's thread
  68. The worlds least efficient amplifier
  69. Shuguang 6L6GCR and 6550 - Your Experience Please
  70. nM scale Valves
  71. Orientation of E-I core OPT and toroidal power transformer
  72. Baldwin Iron
  73. Carver super 7
  74. Question:disadvantages for using a SE OPT on parafeed?
  75. CF after gain stage
  76. New to Tubes, just bought first tube amp
  77. Sonic Frontiers SFP-1 mods?
  78. AES tube brand mixing..
  79. Hum with EL84 Push-Pull
  80. Low Voltage Tube Preamplifier
  81. 27 driving 2A3/45/ or 300B
  82. Tube pre-amp for a vehicle?
  83. Meng Yue Mini schematic?
  84. Do you know this guy?
  85. Triode Pentode combo tubes
  86. M8136 M8137 Mullard
  87. suppo with vinyl?
  88. small binding post for TT ground
  89. 27 Filaments DC in series
  90. Music Angel KT88 hard wired
  91. Nice! First CCS.
  92. bizarre bias, ST-70 experts step inside
  93. hammond power tx 200series update
  94. What is the best tube amp??
  95. NASA space-age tube for audio use
  96. ECL86/6GW8 Console opinions
  97. Bad tubes wanted for tester testing
  98. 7868 tube biasing and output trans protection
  99. second build, recommendations , thoughts
  100. Changing Electra-Print DRD45
  101. ruTubes.com. Anyone dealt with them?
  102. output transformer manufacturer
  103. no resistor values........
  104. Gz34 + otl 6n23p
  105. Jukebox Iron
  106. converting tube rectifier to solid state rectifier.
  107. Help please, Jolida 202a hum.
  108. Amperex Bugle Boy tube???
  109. What's a reasonable amount of power-supply ripple?
  110. Vintage tube amp Aux In To CD In
  111. My first valve amp - help appreciated :)
  112. Plasma ball in tube
  113. Nagra's engineers at work.
  114. what just happened? Plate glowing
  115. "Mullard 5-20 KT88 PP blocks!
  116. CCS transistor choices
  117. capacitor upgrade on my tube phono stage
  118. Microphone Preamp
  119. 6N2 swap
  120. K12M / K12G Current Draw
  121. Best china amp?
  122. Hagtech Clarion 2A3 SET
  123. new idea for a tube power amp
  124. help choose between two preamps
  125. Need a MC phono stage, do i need a pre as well?
  126. What the difference between 7591a & 7868
  127. Need a good phono stage design..
  128. getting a pop when i power down, help
  129. Japan vs US output tx
  130. My own RIAA tube preamp
  131. Tube-I-zator SRPP DAC I/V-Stage circuit discussions
  132. Anyone using silver secondary (or PSSS) output tx
  133. Cary audio design CAD-211
  134. mains overvoltage what to do?
  135. Looking Schematic converting Volume pot to Digital Vol for tube amp.
  136. Jean Hiraga SE Amplifier Power Supply
  137. channel imbalance!!!! need help
  138. ESRC Dollar Sale - Going, Going...
  139. Post pics of your glowing tubes
  140. PCB Layout for tube amp
  141. 530V low-ish dropout regulator?
  142. were can i get transformers from
  143. 6N9P data sheet
  144. Newbie questions - RH84 mods
  145. TriodeElectronics Mk3 for rank noob?
  146. 5718 preamp
  147. 12B4 the pre for me?
  148. Anyone used C3G to drive a 2A3 before?
  149. Cascode Tube Mic Preamp: 12AX7/12AU7 Schematic
  150. Bogen MX60A Schematics
  151. Nasty pop when I power down
  152. Timer for tube hours
  153. Personal Tube Amp DIY Project
  154. Common cathode linestage with 6080
  155. Fingernail polish?
  156. Wintersweet HighVividity Amplifer finalized
  157. Iron loaded preamp, any thoughts?
  158. Tetra Phono Preamp as a DAC analog stage
  159. EL84 Plate Dissipation
  160. 12AU7 Amp?
  161. Toroidal Chokes
  162. Using a voltage converter transformer
  163. Regulated PSU question
  164. please help me change this
  165. Stromberg-Carlson Identification Help
  166. pi filter variations
  167. How do I change this design from EL34 to 6L6?
  168. Sun Audio SV-300B MKII DIY
  169. 230-115V step down transformer earthing
  170. PP oscillation problem
  171. Wiring a DPDT for direct in & 2-100k mono pots ..?
  172. Arion "ADONIS" Schematics Request
  173. Phono Stage my first try
  174. Maximum gain with 6SN7 ?
  175. Rca 6md8
  176. Getting the DIYer blues again.
  177. EL34 B review Tung-Sol
  178. Please help with my first valve preamp ?
  179. power supply filter choke current rating.
  180. Will and Aikido Driver Stage work?
  181. Bottlehead Foreplay III improvements, suggestions, alternatives?
  182. DC modules fot DHT amps....too expensive to buy pre-built, why not DIY them?
  183. Load Resistance (Ra) question applied to OTs
  184. 807 pp build project - whose in?
  185. where to buy dn2540 and 10m45 in UK
  186. ecc88 arcing at shutdown problem...
  187. Question - Output Trafo with CFB
  188. Valves' world
  189. Tube diode for cathode bias?
  190. Trying to get a response from TX maker.pass it on.
  191. Need help choosing a filament supply
  192. Motorola 3 channel Tube Amp from Console
  193. Decware output stage
  194. 50FE5-push pull stereo
  195. tamura f-7000 series
  196. Very simple high power single ended
  197. Which tubes are lowest noise?
  198. where to get good 5AR4 's
  199. Greetings from ETF!
  200. 26 Preamp, Kennedy Version 3
  201. Playin' with feedback
  202. schematic yaqin cd1 tube buffer
  203. tube preamp
  204. Filament current bias
  205. What Transformer is better ??
  206. DC-coupled CF driver pentode help!
  207. HHScott Forum?
  208. Amp Gain Design Philosophy
  209. Greetings - Watt Calculation
  210. AES Chocolates?
  211. Power supply filters - sim results
  212. Q............PP Ultrapath
  213. formula help
  214. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  215. Need an HV trafo? Try these:
  216. Driver for Musical Fidelity 550K
  217. Yaqin MC-10l
  218. help with 2 stage cathode follower
  219. Screen glowing?
  220. Grid 2 voltage affects
  221. Simple Tube Mono Block Tube Amp Schematic
  222. Optimizing a 807 PP amplifiers input stage and phase splitter...
  223. Chassis Layout Advice
  224. strange Stromberg Carlson
  225. lifting the earth
  226. passive xover w/ SET?
  227. Low gain tube amp?
  228. What to do with these parts?
  229. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  230. SRPP with buffer - 1MOhm impedance?
  231. PSUD2 & g2 on 807 problem..?
  232. 230V transformer for a 832 PP project
  233. Mercury vapour rectifier for George
  234. Replacing 6L6 with 6V6: what changes needed?
  235. 4 tube line level pre?
  236. Tube Hybrid Amp Gain Calculation
  237. transformer coupled plate follower
  238. What does your system look like?
  239. Cascoding tubes
  240. Advice with modification of Beard power amp
  241. Harman Kardon TA5000-X power XFMR
  242. This happens when you hire a good designer.
  243. 1st Pass at 1st Phono Preamp; Comments?
  244. Transformers to try.
  245. Hum in phono pre - help please
  246. Presonus Bluetube makeover
  247. Tube Amp Channel Switching
  248. physically small twin triode tube
  249. TJ Full Music Factory Tour Now Online
  250. where to find cool vol control knobs?

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