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  1. EL34/6CA7 driven 300B Schematics
  2. C450 Radio Craftsmen info needed
  3. Tubelab Simple SE v.2
  4. Magnetic shielding with aluminum
  5. lampizator dac
  6. AES is At It Again...
  7. Se Amp with Push Pull Transformer
  8. 6550 which breed can take the flog ?
  9. Chassis Question
  10. EL82 in triode with silverstepper (TVC)
  11. Joined the 12b4 line stage club. And worth it!
  12. ECL86/PCL86 Schematic
  13. Ambient temperature and tubes
  14. Vintage output transformers
  15. -ve grid voltage
  16. Ming Da MC-3008-A2 Mono Blocks
  17. V-Reg, Gyrator, Low (relative) voltage tubes
  18. Simple Tube amp
  19. Jolida 502A replace power switch
  20. Tubelab build selector switch question
  21. Matching tubes pot in old Fenders
  22. tubes supplier
  23. RadioDaze out of the tube business
  24. 8000+ hours on my Simple SE
  25. C-L-C-parallel-R-C
  26. musical power supplies
  27. Trimpots sound better than equivalent resistors for biasing?
  28. Anyone have a simple circuit for . .
  29. PP Tube Biasing, how good is good enough?
  30. Aesthetics
  31. Point to point, from scatch build of the K-12G
  32. What 6550 for Conrad MV75
  33. Motorboating phono input on Stromberg Carlson ASR433
  34. Sunn Sceptre: Weak Vibrato Cause?
  35. Pioneer sr-101
  36. 6AU6 in Push Pull: Opinions please
  37. Audionote M7 and Foreplay III
  38. vintage triode
  39. Help with design review wanted
  40. 6J52P pentode driver?
  41. a gutar amp I built
  42. Looking for a good valve preamp
  43. Anyone try the "Hazen mod" to G3 supressor grid
  44. 6L6GC -Which Shuguang can take the Heat?
  45. Using Toroidal PTs as tube OTs - methods and sources
  46. With a little help... KT88 PP UL Amp
  47. TechTube Featured In November AudioXpress
  48. Yaqin MC-100b channel imbalance
  49. Regulated Tube Preamp question
  50. Has anybody purchased from Mable Audio?
  51. PS voltage changes after capacitor replacement
  52. Non-magnetic bolts that hold an output transformer together
  53. Audio Innovations Series 500 Rewire
  54. Which audio electrolytics in tube voltages -- Your comments please !
  55. Some general opt questions.
  56. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  57. modifying zenith 7d31 amp console
  58. Questions on JE Labs transformer coupled line stage
  59. Onix/Melody SP3 Upgrades and Mods
  60. Motorboating with Regulated Supply
  61. 27 & 6SN7 Preamp - Crossover
  62. Budget 2A3?
  63. first go at design - pp
  64. Tube Amp for MP3 Player
  65. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  66. Marshall amp loses bias
  67. Building the Baby Huey EL84 pushpull amplifier
  68. Tube Voltage Regulator, Is it worth the effort?
  69. Best tubeamp for metal, tight bass
  70. Donor stereo 845 amp- now what!?
  71. "Optimal" output grid loading?
  72. wax poured out!
  73. Yet another do-nothing tOOb hack.
  74. What is a CCS - how do you design one?
  75. Strange Aikido problem when home power fluctuates
  76. Need to regulate 450v --> 300v
  77. new to the forum and looking for el86 info
  78. Why not invert the Tubelab SE board?
  79. Steve Bench Crossover Questions
  80. Audio Note M7 - 7F7 CCS
  81. Anyone have schema for katodcoupled 6C33 P-P?
  82. Ltspice and Valve models
  83. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  84. How to identify type of bias used for my tube amp
  85. VR Tube Question
  86. Ampmaker Kits
  87. P-P with some muscle
  88. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  89. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  90. HELP HELP HELP mesa rectifier
  91. simple se with source selector
  92. Measuring tube/component temperature
  93. Parallel Single Ended Amplifier Design using Acro TO-290s?
  94. Elevate heater trouble
  95. Adjusting the sensitivity on a 6e2 magic eye tube
  96. tube amp for automobile / need ideas
  97. 6550A HF Amp
  98. problem - scratchy sound, rythmical
  99. eico st70 irons!what to do?
  100. How Lampizator CD tube player sound?
  101. Maestro soya amplificador
  102. Can I use my tube amp as a preamp ?
  103. Simple SE with 6BG6GA - magic smoke escapes...
  104. Shunt Cascode Power Valve Driver
  105. Did Siemens ever publish data for their own D3A ?
  106. Motor run caps as power supply filter
  107. Measure unknown choke?
  108. 6528a....HELP ME PLEASE...PLEASE..
  109. Are any of these tubes useful to me?
  110. Heaters The Key Too Sweet Tube Tone.
  111. PP Output Transformer design
  112. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  113. 832 ultra-linear push pull?
  114. 3A5 thoughts
  115. ECC86 vs. ECC88
  116. RH84 builder!
  117. 10GV8 Bias point for the K-12G
  118. EL34 amp blowing up, anode glowing red hot
  119. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  120. Tubelab SE w/Parafeed
  121. Chinese 805 SET monoblock
  122. Vreg or Ireg for Phono heaters
  123. Traynor YMV-1 Voicemaster to Guitar conversion
  124. Pentode preamp tube hum balance
  125. New (old) Friends
  126. How to avoid oscillation and get max BW out of crappy OPT
  127. Power Measurements at normal listening levels
  128. Best way to terminate unused OPT winding?
  129. patent on single-ended amplifier, anno 2008
  130. Headphones amplifier with highish gnfb
  131. Bias meter for AQ1008DT
  132. Change Tubes
  133. PLC84 amp
  134. Color Coding for Fisher 500B Iron
  135. Tubelab SE with 45 tubes only
  136. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  137. 10dB increase in volume needs what gain?
  138. El Cheapo feedback loop adjustment
  139. KT88 blocks? With E80CC + 6922 driver?
  140. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  141. Violator Amp
  142. What to do with 3500uF 650V caps???
  143. SS Rectification
  144. Passive filter at tube amp input
  145. Found this Trio WX-400
  146. PSUD & The JE Labs 2A3
  147. 815
  148. x1 Oscilloscope probes
  149. Iron LTP Schade-PP
  150. Single Ended Pentode Spud and Feedback
  151. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  152. DC on toroid PT windings
  153. Audible benefits of larger coupling caps than required?
  154. Any benefits of regulated current heater supply?
  155. Power Transformer Kaput ???
  156. aikido phono schematic qustion
  157. Easy question for experienced tubies
  158. valves dont sound so good when pink....
  159. Aikido Resistor Help
  160. Mobile Phone Interference
  161. Thank you DIY Audio
  162. Fisher 80-R Can't Find a Schematic
  163. SRPP layout
  164. Rogers E40a Amplifier Schematic
  165. Encapsulating OPTs
  166. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  167. JAN6418 and microphony
  168. can the 6n9s take 300v? (ru 6sl7)
  169. Output impedance of various MOSFET followers at low (<10mA) currents
  170. Big Box O' Tubes
  171. 6j7g 832a amp
  172. Quick Question on Dc coupling
  173. PP question - best driver stage!
  174. SRPP+, or did JRB "borrow" from here?
  175. 5651(A) 85Kr
  176. Ampex 6v6 PP.. worth saving?
  177. The DeForest 504 tube
  178. Sven 6P1P PP Amp
  179. Black 6V6GT - originals
  180. tube phasing for more power?
  181. measuring output transformer inductance?
  182. Question re paralleling common-cathode tube sections
  183. There's so much bait for dumb fishies out there!
  184. Biasing G3 in beamies
  185. 6DJ8 vs 6N1P (6H1N)
  186. Test equipment collection
  187. Rca mi-9358a
  188. FISHER - 500b Caps Leave Them In ???
  189. tek 454
  190. RCA Calypso
  191. New to Valve Amps and Confused???
  192. Anyone used the TL783 as a CCS
  193. Katelelo
  194. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  195. Ping netlist - ECC88 spice models
  196. Please help analyse 807 PPP
  197. DIY Tube Pre with remote
  198. P-P Katodfollower with 6c33c
  199. valve sub
  200. Help on outboard PSU for tube amp
  201. Looking for ARC LS8MKII circuit？
  202. Entire Assembly Glowing in 20 Seconds
  203. 6X5GT PS Problem
  204. Sad News About Blackburn / Tech Tube
  205. Loose top caps.
  206. rh807 choke question?
  207. 6021 Cascode
  208. 6U7-G as driver in a RH 807?
  209. Possible Ebay bargain
  210. Possible Ebay bargin
  211. 845 tube question
  212. Broken VCM163
  213. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  214. Datasheet wanted
  215. SE 833A Help
  216. PS ripple vs output impedance for PP AB1
  217. Simple SE with 807?
  218. Dynaco Bias Balance kit
  219. EL42 Tube
  220. 6GV8 at lowish voltage
  221. 703A tube source?
  222. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  223. "Back To Back" transformers
  224. Dual HF small signal pentodes ?
  225. pre amp output delay circuit?
  226. Standby voltages for tube circuits.
  227. SE Output transformers
  228. Advice on connector type for outboard PS
  229. Decent Junk Pile find! Need Advice suggestions etc.!
  230. Red Plate,Tube runaway, glowing screen grids
  231. Dogfish
  232. Anyone ever bought this Ebay Head amp?
  233. Rogers Cadet III (Mk3) - which input to use?
  234. Recycling a TT plinth as a tube amp chassis?
  235. motor run caps
  236. RH-84 Hum
  237. Regulator LD1085V Question
  238. Chasing Hum...
  239. What do you know about the 23D4?
  240. Vacuum State RTP3C
  241. Another Tubelad SE build
  242. Noisy DC filament power supply problem on an Aikido
  243. Aikido Phono Stage with Step-up Transformers
  244. 6-volt rectifier tube
  245. Replacing output transformer questions
  246. Hey SY, were you aware of this?
  247. Where is the best place to sell a pair of OTs?
  248. EL84 tube regulator
  249. Testing 6H2P on 600a
  250. Grid stoppers, clamping, blocking and crossover distortion.