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  1. DC-coupled CF driver pentode help!
  2. HHScott Forum?
  3. Delay relay
  4. Amp Gain Design Philosophy
  5. Converting a Stromberg Carlson AU-35 into a Bass guitar amp?
  6. Greetings - Watt Calculation
  7. AES Chocolates?
  8. Power supply filters - sim results
  9. Q............PP Ultrapath
  10. formula help
  11. DAC -> Amp with parallelled E182CC and Lundahl transformers -> 8ohm headphones
  12. Need an HV trafo? Try these:
  13. Driver for Musical Fidelity 550K
  14. Yaqin MC-10l
  15. help with 2 stage cathode follower
  16. B&K 747 tube tester
  17. Screen glowing?
  18. Grid 2 voltage affects
  19. Simple Tube Mono Block Tube Amp Schematic
  20. Optimizing a 807 PP amplifiers input stage and phase splitter...
  21. Chassis Layout Advice
  22. strange Stromberg Carlson
  23. lifting the earth
  24. passive xover w/ SET?
  25. Low gain tube amp?
  26. What to do with these parts?
  27. Regulated Heater on the 6SN7 Aikido Plate to Heater question
  28. SRPP with buffer - 1MOhm impedance?
  29. PSUD2 & g2 on 807 problem..?
  30. 230V transformer for a 832 PP project
  31. Mercury vapour rectifier for George
  32. Replacing 6L6 with 6V6: what changes needed?
  33. 4 tube line level pre?
  34. Tube Hybrid Amp Gain Calculation
  35. transformer coupled plate follower
  36. What does your system look like?
  37. Cascoding tubes
  38. Advice with modification of Beard power amp
  39. Harman Kardon TA5000-X power XFMR
  40. This happens when you hire a good designer.
  41. Test & Measurement interface for Soundcard
  42. Where to find large capacity high voltage caps?
  43. 1st Pass at 1st Phono Preamp; Comments?
  44. Transformers to try.
  45. Hum in phono pre - help please
  46. Output transformer cores
  47. Output transformer cores
  48. Presonus Bluetube makeover
  49. Tube Amp Channel Switching
  50. physically small twin triode tube
  51. Tubelab SE 2A3 _ Newbie question.
  52. TJ Full Music Factory Tour Now Online
  53. where to find cool vol control knobs?
  54. $200 6V6 Amp
  55. Audio Research Reference Phono, anyone?
  56. Review of Suppo Audio's first offering - EL84 Push Pull
  57. 6n23p(-ev)
  58. Akikido LSA/HPA 9-Pin or Akikido Octal which one?
  59. TUBE AMP 1946 worth grabbing?
  60. SE Newbie wants to go level 2
  61. Where To Purchase Tube Amp Parts in the UK
  62. The soul of a new "electrostatic" machine
  63. Transformer question
  64. Hybrid caps
  65. 6021 phono pre-amp
  66. bandmaster ab763 fx loop
  67. How to design input stage with specific input impedance/pot value
  68. Simple SE Grounding Question
  69. James OPT connections?
  70. DIY rtp5 help please?
  71. SS Followers to drive power tubes
  72. Sophia Electric EL34 Schematic
  73. DRD amplifier with CCS?
  74. Phono Preamp
  75. Dynaco ST-70 with a GSI board, Parts diagram and any info PLEASE
  76. transistor AC blocker
  77. PL519 Source
  78. Identify this mullard
  79. Suppo Audio -- New Chinese EL84 PP amp for CHEAP.
  80. Beard p35mkII schematics/photo photo
  81. Bias transformer question
  82. Anyone deliberately dial in 2nd harmonic?
  83. What is the sonic impact of SS CCS in tube equipment
  84. Phase help
  85. El34-kt88
  86. Transconductance amplifier based on hybrid cascode
  87. Chinese 6Z4, also those regulated supplies.
  88. Audion Reference restoration
  89. Anyone try a regulated PS in an Ultrapath preamp?
  90. Source for Resistor sets?
  91. High Zout tube preamps with ss power amps.
  92. PSUD II soft start
  93. About the 6AU6s
  94. Capacitor polarity question
  95. Audio Note line preamp question
  96. EL34 SE amp schematic
  97. looking for 12AT7 / ECC81 phase splitter
  98. 6AS7 getting rare?
  99. How to power up a new Build the first time
  100. power transformer for a 2a3se amp!
  101. 6DJ8 Tube Phono and Line Preamp
  102. ST-35 Build Using PC13 Boards Questions and Thoughts
  103. My new hybrid full single ended amplifier project on going
  104. Punch tools for making metal top plates on amps
  105. antique sound lab AQ1009-845 interstage transformer replacement
  106. The search for the ultimate 6SN7
  107. Looking for a good part web store
  108. Need your advice for tube amp case
  109. Questions about grounding
  110. power supply
  111. Strange idea for an output stage - comments requested
  112. Please comment on this EL84 PP design
  113. 1.5VDC Heater Supply For #26!?
  114. Looking for 300B or 2A3 design suggestions......gearing up for a new project
  115. original philips AD-9058
  116. Bench test equipment, What's yours?
  117. Gain calculating in 12ax7 guitar preamp
  118. Tube Lab SE Problem
  119. Tube Socket help, I'm looking at a few, but not sure which material to buy?
  120. Sweep tube info/specs
  121. Help for Tango 300b amp
  122. vacuum tubes type 10 and UX201A
  123. 6DQ5 specs for audio
  124. r-core output transformers...
  125. Isolation Transformer Question
  126. Buffer question?
  127. el95 pp amp for guitar
  128. Two positive rails from a center-tapped transformer?
  129. Help reqd - 115V PTX on 230V
  130. Replacing the cathode resistor with a current source in SE ?
  131. First 300b Design, Please comment
  132. 6AX4 datasheet question
  133. Bias Drift
  134. Recommend me a tube...
  135. What happens when Heater Cathode voltage is exceeded?
  136. 100uF Motor Run Caps
  137. HELP Schematics for RL 12 T 15
  138. Phono Stage
  139. TEE Vee Tube fans' SE Cf Amp
  140. Yaqin MC-10L losing volume
  141. Pl84 tubes
  142. AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
  143. 5150 or slo 5-50w clone
  144. ECC88, warm up time
  145. Yaqin MC-10L Heater Voltage
  146. 6c33 otl amblifier
  147. self-oscillation in Dynaco ST-70
  148. computer tube tester
  149. Troubleshooting the decware se84 kit
  150. 6L6 PP problem
  151. First try at an Eagle Schematic/board
  152. opinions on decware zen kit
  153. Powerdrive for PP amp with local feedback and pentode driver ?
  154. having trouble calculating transconductance
  155. Philips console unit with reverb!
  156. 300BSET with Kimmel style mu driver ?
  157. Testing Mullard 12AU7 on Hickok 600A
  158. EL34/6CA7 driven 300B Schematics
  159. C450 Radio Craftsmen info needed
  160. Tubelab Simple SE v.2
  161. Magnetic shielding with aluminum
  162. lampizator dac
  163. AES is At It Again...
  164. Se Amp with Push Pull Transformer
  165. 6550 which breed can take the flog ?
  166. Chassis Question
  167. EL82 in triode with silverstepper (TVC)
  168. Joined the 12b4 line stage club. And worth it!
  169. ECL86/PCL86 Schematic
  170. Ambient temperature and tubes
  171. Vintage output transformers
  172. -ve grid voltage
  173. Ming Da MC-3008-A2 Mono Blocks
  174. V-Reg, Gyrator, Low (relative) voltage tubes
  175. Simple Tube amp
  176. Jolida 502A replace power switch
  177. Tubelab build selector switch question
  178. Matching tubes pot in old Fenders
  179. tubes supplier
  180. RadioDaze out of the tube business
  181. 8000+ hours on my Simple SE
  182. C-L-C-parallel-R-C
  183. musical power supplies
  184. Trimpots sound better than equivalent resistors for biasing?
  185. Anyone have a simple circuit for . .
  186. PP Tube Biasing, how good is good enough?
  187. Aesthetics
  188. Point to point, from scatch build of the K-12G
  189. What 6550 for Conrad MV75
  190. Motorboating phono input on Stromberg Carlson ASR433
  191. Sunn Sceptre: Weak Vibrato Cause?
  192. Pioneer sr-101
  193. 6AU6 in Push Pull: Opinions please
  194. Audionote M7 and Foreplay III
  195. vintage triode
  196. Help with design review wanted
  197. 6J52P pentode driver?
  198. a gutar amp I built
  199. Looking for a good valve preamp
  200. Anyone try the "Hazen mod" to G3 supressor grid
  201. 6L6GC -Which Shuguang can take the Heat?
  202. Using Toroidal PTs as tube OTs - methods and sources
  203. With a little help... KT88 PP UL Amp
  204. TechTube Featured In November AudioXpress
  205. Yaqin MC-100b channel imbalance
  206. Regulated Tube Preamp question
  207. Has anybody purchased from Mable Audio?
  208. PS voltage changes after capacitor replacement
  209. Non-magnetic bolts that hold an output transformer together
  210. Audio Innovations Series 500 Rewire
  211. Which audio electrolytics in tube voltages -- Your comments please !
  212. Some general opt questions.
  213. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  214. modifying zenith 7d31 amp console
  215. Questions on JE Labs transformer coupled line stage
  216. Onix/Melody SP3 Upgrades and Mods
  217. Motorboating with Regulated Supply
  218. 27 & 6SN7 Preamp - Crossover
  219. Budget 2A3?
  220. first go at design - pp
  221. Tube Amp for MP3 Player
  222. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  223. Marshall amp loses bias
  224. Building the Baby Huey EL84 pushpull amplifier
  225. Tube Voltage Regulator, Is it worth the effort?
  226. Best tubeamp for metal, tight bass
  227. Donor stereo 845 amp- now what!?
  228. "Optimal" output grid loading?
  229. wax poured out!
  230. Yet another do-nothing tOOb hack.
  231. What is a CCS - how do you design one?
  232. Strange Aikido problem when home power fluctuates
  233. Need to regulate 450v --> 300v
  234. new to the forum and looking for el86 info
  235. Why not invert the Tubelab SE board?
  236. Steve Bench Crossover Questions
  237. Audio Note M7 - 7F7 CCS
  238. Anyone have schema for katodcoupled 6C33 P-P?
  239. Ltspice and Valve models
  240. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  241. How to identify type of bias used for my tube amp
  242. VR Tube Question
  243. Ampmaker Kits
  244. P-P with some muscle
  245. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  246. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  247. HELP HELP HELP mesa rectifier
  248. simple se with source selector
  249. Measuring tube/component temperature
  250. Parallel Single Ended Amplifier Design using Acro TO-290s?

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