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  1. computer tube tester
  2. Troubleshooting the decware se84 kit
  3. 6L6 PP problem
  4. First try at an Eagle Schematic/board
  5. opinions on decware zen kit
  6. Powerdrive for PP amp with local feedback and pentode driver ?
  7. having trouble calculating transconductance
  8. Philips console unit with reverb!
  9. 300BSET with Kimmel style mu driver ?
  10. Testing Mullard 12AU7 on Hickok 600A
  11. EL34/6CA7 driven 300B Schematics
  12. C450 Radio Craftsmen info needed
  13. Tubelab Simple SE v.2
  14. Magnetic shielding with aluminum
  15. lampizator dac
  16. AES is At It Again...
  17. Se Amp with Push Pull Transformer
  18. 6550 which breed can take the flog ?
  19. Chassis Question
  20. EL82 in triode with silverstepper (TVC)
  21. Joined the 12b4 line stage club. And worth it!
  22. ECL86/PCL86 Schematic
  23. Ambient temperature and tubes
  24. Vintage output transformers
  25. -ve grid voltage
  26. Ming Da MC-3008-A2 Mono Blocks
  27. V-Reg, Gyrator, Low (relative) voltage tubes
  28. Simple Tube amp
  29. Jolida 502A replace power switch
  30. Tubelab build selector switch question
  31. Matching tubes pot in old Fenders
  32. tubes supplier
  33. RadioDaze out of the tube business
  34. 8000+ hours on my Simple SE
  35. C-L-C-parallel-R-C
  36. musical power supplies
  37. Trimpots sound better than equivalent resistors for biasing?
  38. Anyone have a simple circuit for . .
  39. PP Tube Biasing, how good is good enough?
  40. Aesthetics
  41. Point to point, from scatch build of the K-12G
  42. What 6550 for Conrad MV75
  43. Motorboating phono input on Stromberg Carlson ASR433
  44. Sunn Sceptre: Weak Vibrato Cause?
  45. Pioneer sr-101
  46. 6AU6 in Push Pull: Opinions please
  47. Audionote M7 and Foreplay III
  48. vintage triode
  49. Help with design review wanted
  50. 6J52P pentode driver?
  51. a gutar amp I built
  52. Looking for a good valve preamp
  53. Anyone try the "Hazen mod" to G3 supressor grid
  54. 6L6GC -Which Shuguang can take the Heat?
  55. Using Toroidal PTs as tube OTs - methods and sources
  56. With a little help... KT88 PP UL Amp
  57. TechTube Featured In November AudioXpress
  58. Yaqin MC-100b channel imbalance
  59. Regulated Tube Preamp question
  60. Has anybody purchased from Mable Audio?
  61. PS voltage changes after capacitor replacement
  62. Non-magnetic bolts that hold an output transformer together
  63. Audio Innovations Series 500 Rewire
  64. Which audio electrolytics in tube voltages -- Your comments please !
  65. Some general opt questions.
  66. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  67. modifying zenith 7d31 amp console
  68. Questions on JE Labs transformer coupled line stage
  69. Onix/Melody SP3 Upgrades and Mods
  70. Motorboating with Regulated Supply
  71. 27 & 6SN7 Preamp - Crossover
  72. Budget 2A3?
  73. first go at design - pp
  74. Tube Amp for MP3 Player
  75. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  76. Marshall amp loses bias
  77. Building the Baby Huey EL84 pushpull amplifier
  78. Tube Voltage Regulator, Is it worth the effort?
  79. Best tubeamp for metal, tight bass
  80. Donor stereo 845 amp- now what!?
  81. "Optimal" output grid loading?
  82. wax poured out!
  83. Yet another do-nothing tOOb hack.
  84. What is a CCS - how do you design one?
  85. Strange Aikido problem when home power fluctuates
  86. Need to regulate 450v --> 300v
  87. new to the forum and looking for el86 info
  88. Why not invert the Tubelab SE board?
  89. Steve Bench Crossover Questions
  90. Audio Note M7 - 7F7 CCS
  91. Anyone have schema for katodcoupled 6C33 P-P?
  92. Ltspice and Valve models
  93. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  94. How to identify type of bias used for my tube amp
  95. VR Tube Question
  96. Ampmaker Kits
  97. P-P with some muscle
  98. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  99. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  100. HELP HELP HELP mesa rectifier
  101. simple se with source selector
  102. Measuring tube/component temperature
  103. Parallel Single Ended Amplifier Design using Acro TO-290s?
  104. Elevate heater trouble
  105. Adjusting the sensitivity on a 6e2 magic eye tube
  106. tube amp for automobile / need ideas
  107. 6550A HF Amp
  108. problem - scratchy sound, rythmical
  109. eico st70 irons!what to do?
  110. How Lampizator CD tube player sound?
  111. Maestro soya amplificador
  112. Can I use my tube amp as a preamp ?
  113. Simple SE with 6BG6GA - magic smoke escapes...
  114. Shunt Cascode Power Valve Driver
  115. Did Siemens ever publish data for their own D3A ?
  116. Motor run caps as power supply filter
  117. Measure unknown choke?
  118. 6528a....HELP ME PLEASE...PLEASE..
  119. Are any of these tubes useful to me?
  120. Heaters The Key Too Sweet Tube Tone.
  121. PP Output Transformer design
  122. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  123. 832 ultra-linear push pull?
  124. 3A5 thoughts
  125. ECC86 vs. ECC88
  126. RH84 builder!
  127. 10GV8 Bias point for the K-12G
  128. EL34 amp blowing up, anode glowing red hot
  129. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  130. Tubelab SE w/Parafeed
  131. Chinese 805 SET monoblock
  132. Vreg or Ireg for Phono heaters
  133. Traynor YMV-1 Voicemaster to Guitar conversion
  134. Pentode preamp tube hum balance
  135. New (old) Friends
  136. How to avoid oscillation and get max BW out of crappy OPT
  137. Power Measurements at normal listening levels
  138. Best way to terminate unused OPT winding?
  139. patent on single-ended amplifier, anno 2008
  140. Headphones amplifier with highish gnfb
  141. Bias meter for AQ1008DT
  142. Change Tubes
  143. PLC84 amp
  144. Color Coding for Fisher 500B Iron
  145. Tubelab SE with 45 tubes only
  146. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  147. 10dB increase in volume needs what gain?
  148. El Cheapo feedback loop adjustment
  149. KT88 blocks? With E80CC + 6922 driver?
  150. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  151. Violator Amp
  152. What to do with 3500uF 650V caps???
  153. SS Rectification
  154. Passive filter at tube amp input
  155. Found this Trio WX-400
  156. PSUD & The JE Labs 2A3
  157. 815
  158. x1 Oscilloscope probes
  159. Iron LTP Schade-PP
  160. Single Ended Pentode Spud and Feedback
  161. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  162. DC on toroid PT windings
  163. Audible benefits of larger coupling caps than required?
  164. Any benefits of regulated current heater supply?
  165. Power Transformer Kaput ???
  166. aikido phono schematic qustion
  167. Easy question for experienced tubies
  168. valves dont sound so good when pink....
  169. Aikido Resistor Help
  170. Mobile Phone Interference
  171. Thank you DIY Audio
  172. Fisher 80-R Can't Find a Schematic
  173. SRPP layout
  174. Rogers E40a Amplifier Schematic
  175. Encapsulating OPTs
  176. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  177. JAN6418 and microphony
  178. can the 6n9s take 300v? (ru 6sl7)
  179. Output impedance of various MOSFET followers at low (<10mA) currents
  180. Big Box O' Tubes
  181. 6j7g 832a amp
  182. Quick Question on Dc coupling
  183. PP question - best driver stage!
  184. SRPP+, or did JRB "borrow" from here?
  185. 5651(A) 85Kr
  186. Ampex 6v6 PP.. worth saving?
  187. The DeForest 504 tube
  188. Sven 6P1P PP Amp
  189. Black 6V6GT - originals
  190. tube phasing for more power?
  191. measuring output transformer inductance?
  192. Question re paralleling common-cathode tube sections
  193. There's so much bait for dumb fishies out there!
  194. Biasing G3 in beamies
  195. 6DJ8 vs 6N1P (6H1N)
  196. Test equipment collection
  197. Rca mi-9358a
  198. FISHER - 500b Caps Leave Them In ???
  199. tek 454
  200. RCA Calypso
  201. New to Valve Amps and Confused???
  202. Anyone used the TL783 as a CCS
  203. Katelelo
  204. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  205. Ping netlist - ECC88 spice models
  206. Please help analyse 807 PPP
  207. DIY Tube Pre with remote
  208. P-P Katodfollower with 6c33c
  209. valve sub
  210. Help on outboard PSU for tube amp
  211. Looking for ARC LS8MKII circuit?
  212. Entire Assembly Glowing in 20 Seconds
  213. 6X5GT PS Problem
  214. Sad News About Blackburn / Tech Tube
  215. Loose top caps.
  216. rh807 choke question?
  217. 6021 Cascode
  218. 6U7-G as driver in a RH 807?
  219. Possible Ebay bargain
  220. Possible Ebay bargin
  221. 845 tube question
  222. Broken VCM163
  223. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  224. Datasheet wanted
  225. SE 833A Help
  226. PS ripple vs output impedance for PP AB1
  227. Simple SE with 807?
  228. Dynaco Bias Balance kit
  229. EL42 Tube
  230. 6GV8 at lowish voltage
  231. 703A tube source?
  232. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  233. "Back To Back" transformers
  234. Dual HF small signal pentodes ?
  235. pre amp output delay circuit?
  236. Standby voltages for tube circuits.
  237. SE Output transformers
  238. Advice on connector type for outboard PS
  239. Decent Junk Pile find! Need Advice suggestions etc.!
  240. Red Plate,Tube runaway, glowing screen grids
  241. Dogfish
  242. Anyone ever bought this Ebay Head amp?
  243. Rogers Cadet III (Mk3) - which input to use?
  244. Recycling a TT plinth as a tube amp chassis?
  245. motor run caps
  246. RH-84 Hum
  247. Regulator LD1085V Question
  248. Chasing Hum...
  249. What do you know about the 23D4?
  250. Vacuum State RTP3C

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