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  1. el95 pp amp for guitar
  2. Two positive rails from a center-tapped transformer?
  3. Help reqd - 115V PTX on 230V
  4. Replacing the cathode resistor with a current source in SE ?
  5. First 300b Design, Please comment
  6. 6AX4 datasheet question
  7. Bias Drift
  8. Recommend me a tube...
  9. What happens when Heater Cathode voltage is exceeded?
  10. 100uF Motor Run Caps
  11. HELP Schematics for RL 12 T 15
  12. Phono Stage
  13. TEE Vee Tube fans' SE Cf Amp
  14. Yaqin MC-10L losing volume
  15. Pl84 tubes
  16. AnalogMetric 6L6GC SE amp kit...thoughts about this kit?
  17. 5150 or slo 5-50w clone
  18. ECC88, warm up time
  19. Yaqin MC-10L Heater Voltage
  20. 6c33 otl amblifier
  21. self-oscillation in Dynaco ST-70
  22. computer tube tester
  23. Troubleshooting the decware se84 kit
  24. 6L6 PP problem
  25. First try at an Eagle Schematic/board
  26. opinions on decware zen kit
  27. Powerdrive for PP amp with local feedback and pentode driver ?
  28. having trouble calculating transconductance
  29. Philips console unit with reverb!
  30. 300BSET with Kimmel style mu driver ?
  31. Testing Mullard 12AU7 on Hickok 600A
  32. EL34/6CA7 driven 300B Schematics
  33. C450 Radio Craftsmen info needed
  34. Tubelab Simple SE v.2
  35. Magnetic shielding with aluminum
  36. lampizator dac
  37. AES is At It Again...
  38. Se Amp with Push Pull Transformer
  39. 6550 which breed can take the flog ?
  40. Chassis Question
  41. EL82 in triode with silverstepper (TVC)
  42. Joined the 12b4 line stage club. And worth it!
  43. ECL86/PCL86 Schematic
  44. Ambient temperature and tubes
  45. Vintage output transformers
  46. -ve grid voltage
  47. Ming Da MC-3008-A2 Mono Blocks
  48. V-Reg, Gyrator, Low (relative) voltage tubes
  49. Simple Tube amp
  50. Jolida 502A replace power switch
  51. Tubelab build selector switch question
  52. Matching tubes pot in old Fenders
  53. tubes supplier
  54. RadioDaze out of the tube business
  55. 8000+ hours on my Simple SE
  56. C-L-C-parallel-R-C
  57. musical power supplies
  58. Trimpots sound better than equivalent resistors for biasing?
  59. Anyone have a simple circuit for . .
  60. PP Tube Biasing, how good is good enough?
  61. Aesthetics
  62. Point to point, from scatch build of the K-12G
  63. What 6550 for Conrad MV75
  64. Motorboating phono input on Stromberg Carlson ASR433
  65. Sunn Sceptre: Weak Vibrato Cause?
  66. Pioneer sr-101
  67. 6AU6 in Push Pull: Opinions please
  68. Audionote M7 and Foreplay III
  69. vintage triode
  70. Help with design review wanted
  71. 6J52P pentode driver?
  72. a gutar amp I built
  73. Looking for a good valve preamp
  74. Anyone try the "Hazen mod" to G3 supressor grid
  75. 6L6GC -Which Shuguang can take the Heat?
  76. Using Toroidal PTs as tube OTs - methods and sources
  77. With a little help... KT88 PP UL Amp
  78. TechTube Featured In November AudioXpress
  79. Yaqin MC-100b channel imbalance
  80. Regulated Tube Preamp question
  81. Has anybody purchased from Mable Audio?
  82. PS voltage changes after capacitor replacement
  83. Non-magnetic bolts that hold an output transformer together
  84. Audio Innovations Series 500 Rewire
  85. Which audio electrolytics in tube voltages -- Your comments please !
  86. Some general opt questions.
  87. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  88. modifying zenith 7d31 amp console
  89. Questions on JE Labs transformer coupled line stage
  90. Onix/Melody SP3 Upgrades and Mods
  91. Motorboating with Regulated Supply
  92. 27 & 6SN7 Preamp - Crossover
  93. Budget 2A3?
  94. first go at design - pp
  95. Tube Amp for MP3 Player
  96. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  97. Marshall amp loses bias
  98. Building the Baby Huey EL84 pushpull amplifier
  99. Tube Voltage Regulator, Is it worth the effort?
  100. Best tubeamp for metal, tight bass
  101. Donor stereo 845 amp- now what!?
  102. "Optimal" output grid loading?
  103. wax poured out!
  104. Yet another do-nothing tOOb hack.
  105. What is a CCS - how do you design one?
  106. Strange Aikido problem when home power fluctuates
  107. Need to regulate 450v --> 300v
  108. new to the forum and looking for el86 info
  109. Why not invert the Tubelab SE board?
  110. Steve Bench Crossover Questions
  111. Audio Note M7 - 7F7 CCS
  112. Anyone have schema for katodcoupled 6C33 P-P?
  113. Ltspice and Valve models
  114. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  115. How to identify type of bias used for my tube amp
  116. VR Tube Question
  117. Ampmaker Kits
  118. P-P with some muscle
  119. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  120. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  121. HELP HELP HELP mesa rectifier
  122. simple se with source selector
  123. Measuring tube/component temperature
  124. Parallel Single Ended Amplifier Design using Acro TO-290s?
  125. Elevate heater trouble
  126. Adjusting the sensitivity on a 6e2 magic eye tube
  127. tube amp for automobile / need ideas
  128. 6550A HF Amp
  129. problem - scratchy sound, rythmical
  130. eico st70 irons!what to do?
  131. How Lampizator CD tube player sound?
  132. Maestro soya amplificador
  133. Can I use my tube amp as a preamp ?
  134. Simple SE with 6BG6GA - magic smoke escapes...
  135. Shunt Cascode Power Valve Driver
  136. Did Siemens ever publish data for their own D3A ?
  137. Motor run caps as power supply filter
  138. Measure unknown choke?
  139. 6528a....HELP ME PLEASE...PLEASE..
  140. Are any of these tubes useful to me?
  141. Heaters The Key Too Sweet Tube Tone.
  142. PP Output Transformer design
  143. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  144. 832 ultra-linear push pull?
  145. 3A5 thoughts
  146. ECC86 vs. ECC88
  147. RH84 builder!
  148. 10GV8 Bias point for the K-12G
  149. EL34 amp blowing up, anode glowing red hot
  150. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  151. Tubelab SE w/Parafeed
  152. Chinese 805 SET monoblock
  153. Vreg or Ireg for Phono heaters
  154. Traynor YMV-1 Voicemaster to Guitar conversion
  155. Pentode preamp tube hum balance
  156. New (old) Friends
  157. How to avoid oscillation and get max BW out of crappy OPT
  158. Power Measurements at normal listening levels
  159. Best way to terminate unused OPT winding?
  160. patent on single-ended amplifier, anno 2008
  161. Headphones amplifier with highish gnfb
  162. Bias meter for AQ1008DT
  163. Change Tubes
  164. PLC84 amp
  165. Color Coding for Fisher 500B Iron
  166. Tubelab SE with 45 tubes only
  167. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  168. 10dB increase in volume needs what gain?
  169. El Cheapo feedback loop adjustment
  170. KT88 blocks? With E80CC + 6922 driver?
  171. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  172. Violator Amp
  173. What to do with 3500uF 650V caps???
  174. SS Rectification
  175. Passive filter at tube amp input
  176. Found this Trio WX-400
  177. PSUD & The JE Labs 2A3
  178. 815
  179. x1 Oscilloscope probes
  180. Iron LTP Schade-PP
  181. Single Ended Pentode Spud and Feedback
  182. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  183. DC on toroid PT windings
  184. Audible benefits of larger coupling caps than required?
  185. Any benefits of regulated current heater supply?
  186. Power Transformer Kaput ???
  187. aikido phono schematic qustion
  188. Easy question for experienced tubies
  189. valves dont sound so good when pink....
  190. Aikido Resistor Help
  191. Mobile Phone Interference
  192. Thank you DIY Audio
  193. Fisher 80-R Can't Find a Schematic
  194. SRPP layout
  195. Rogers E40a Amplifier Schematic
  196. Encapsulating OPTs
  197. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  198. JAN6418 and microphony
  199. can the 6n9s take 300v? (ru 6sl7)
  200. Output impedance of various MOSFET followers at low (<10mA) currents
  201. Big Box O' Tubes
  202. 6j7g 832a amp
  203. Quick Question on Dc coupling
  204. PP question - best driver stage!
  205. SRPP+, or did JRB "borrow" from here?
  206. 5651(A) 85Kr
  207. Ampex 6v6 PP.. worth saving?
  208. The DeForest 504 tube
  209. Sven 6P1P PP Amp
  210. Black 6V6GT - originals
  211. tube phasing for more power?
  212. measuring output transformer inductance?
  213. Question re paralleling common-cathode tube sections
  214. There's so much bait for dumb fishies out there!
  215. Biasing G3 in beamies
  216. 6DJ8 vs 6N1P (6H1N)
  217. Test equipment collection
  218. Rca mi-9358a
  219. FISHER - 500b Caps Leave Them In ???
  220. tek 454
  221. RCA Calypso
  222. New to Valve Amps and Confused???
  223. Anyone used the TL783 as a CCS
  224. Katelelo
  225. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  226. Ping netlist - ECC88 spice models
  227. Please help analyse 807 PPP
  228. DIY Tube Pre with remote
  229. P-P Katodfollower with 6c33c
  230. valve sub
  231. Help on outboard PSU for tube amp
  232. Looking for ARC LS8MKII circuit?
  233. Entire Assembly Glowing in 20 Seconds
  234. 6X5GT PS Problem
  235. Sad News About Blackburn / Tech Tube
  236. Loose top caps.
  237. rh807 choke question?
  238. 6021 Cascode
  239. 6U7-G as driver in a RH 807?
  240. Possible Ebay bargain
  241. Possible Ebay bargin
  242. 845 tube question
  243. Broken VCM163
  244. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  245. Datasheet wanted
  246. SE 833A Help
  247. PS ripple vs output impedance for PP AB1
  248. Simple SE with 807?
  249. Dynaco Bias Balance kit
  250. EL42 Tube

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