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  1. simple se with source selector
  2. Measuring tube/component temperature
  3. Parallel Single Ended Amplifier Design using Acro TO-290s?
  4. Elevate heater trouble
  5. Adjusting the sensitivity on a 6e2 magic eye tube
  6. tube amp for automobile / need ideas
  7. 6550A HF Amp
  8. problem - scratchy sound, rythmical
  9. eico st70 irons!what to do?
  10. How Lampizator CD tube player sound?
  11. Maestro soya amplificador
  12. Can I use my tube amp as a preamp ?
  13. Simple SE with 6BG6GA - magic smoke escapes...
  14. Shunt Cascode Power Valve Driver
  15. Did Siemens ever publish data for their own D3A ?
  16. Motor run caps as power supply filter
  17. Measure unknown choke?
  18. 6528a....HELP ME PLEASE...PLEASE..
  19. Are any of these tubes useful to me?
  20. Heaters The Key Too Sweet Tube Tone.
  21. PP Output Transformer design
  22. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  23. 832 ultra-linear push pull?
  24. 3A5 thoughts
  25. ECC86 vs. ECC88
  26. RH84 builder!
  27. 10GV8 Bias point for the K-12G
  28. EL34 amp blowing up, anode glowing red hot
  29. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  30. Tubelab SE w/Parafeed
  31. Chinese 805 SET monoblock
  32. Vreg or Ireg for Phono heaters
  33. Traynor YMV-1 Voicemaster to Guitar conversion
  34. Pentode preamp tube hum balance
  35. New (old) Friends
  36. How to avoid oscillation and get max BW out of crappy OPT
  37. Power Measurements at normal listening levels
  38. Best way to terminate unused OPT winding?
  39. patent on single-ended amplifier, anno 2008
  40. Headphones amplifier with highish gnfb
  41. Bias meter for AQ1008DT
  42. Change Tubes
  43. PLC84 amp
  44. Color Coding for Fisher 500B Iron
  45. Tubelab SE with 45 tubes only
  46. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  47. 10dB increase in volume needs what gain?
  48. El Cheapo feedback loop adjustment
  49. KT88 blocks? With E80CC + 6922 driver?
  50. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  51. Violator Amp
  52. What to do with 3500uF 650V caps???
  53. SS Rectification
  54. Passive filter at tube amp input
  55. Found this Trio WX-400
  56. PSUD & The JE Labs 2A3
  57. 815
  58. x1 Oscilloscope probes
  59. Iron LTP Schade-PP
  60. Single Ended Pentode Spud and Feedback
  61. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  62. DC on toroid PT windings
  63. Audible benefits of larger coupling caps than required?
  64. Any benefits of regulated current heater supply?
  65. Power Transformer Kaput ???
  66. aikido phono schematic qustion
  67. Easy question for experienced tubies
  68. valves dont sound so good when pink....
  69. Aikido Resistor Help
  70. Mobile Phone Interference
  71. Thank you DIY Audio
  72. Fisher 80-R Can't Find a Schematic
  73. SRPP layout
  74. Rogers E40a Amplifier Schematic
  75. Encapsulating OPTs
  76. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  77. JAN6418 and microphony
  78. can the 6n9s take 300v? (ru 6sl7)
  79. Output impedance of various MOSFET followers at low (<10mA) currents
  80. Big Box O' Tubes
  81. 6j7g 832a amp
  82. Quick Question on Dc coupling
  83. PP question - best driver stage!
  84. SRPP+, or did JRB "borrow" from here?
  85. 5651(A) 85Kr
  86. Ampex 6v6 PP.. worth saving?
  87. The DeForest 504 tube
  88. Sven 6P1P PP Amp
  89. Black 6V6GT - originals
  90. tube phasing for more power?
  91. measuring output transformer inductance?
  92. Question re paralleling common-cathode tube sections
  93. There's so much bait for dumb fishies out there!
  94. Biasing G3 in beamies
  95. 6DJ8 vs 6N1P (6H1N)
  96. Test equipment collection
  97. Rca mi-9358a
  98. FISHER - 500b Caps Leave Them In ???
  99. tek 454
  100. RCA Calypso
  101. New to Valve Amps and Confused???
  102. Anyone used the TL783 as a CCS
  103. Katelelo
  104. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  105. Ping netlist - ECC88 spice models
  106. Please help analyse 807 PPP
  107. DIY Tube Pre with remote
  108. P-P Katodfollower with 6c33c
  109. valve sub
  110. Help on outboard PSU for tube amp
  111. Looking for ARC LS8MKII circuit?
  112. Entire Assembly Glowing in 20 Seconds
  113. 6X5GT PS Problem
  114. Sad News About Blackburn / Tech Tube
  115. Loose top caps.
  116. rh807 choke question?
  117. 6021 Cascode
  118. 6U7-G as driver in a RH 807?
  119. Possible Ebay bargain
  120. Possible Ebay bargin
  121. 845 tube question
  122. Broken VCM163
  123. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  124. Datasheet wanted
  125. SE 833A Help
  126. PS ripple vs output impedance for PP AB1
  127. Simple SE with 807?
  128. Dynaco Bias Balance kit
  129. EL42 Tube
  130. 6GV8 at lowish voltage
  131. 703A tube source?
  132. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  133. "Back To Back" transformers
  134. Dual HF small signal pentodes ?
  135. pre amp output delay circuit?
  136. Standby voltages for tube circuits.
  137. SE Output transformers
  138. Advice on connector type for outboard PS
  139. Decent Junk Pile find! Need Advice suggestions etc.!
  140. Red Plate,Tube runaway, glowing screen grids
  141. Dogfish
  142. Anyone ever bought this Ebay Head amp?
  143. Rogers Cadet III (Mk3) - which input to use?
  144. Recycling a TT plinth as a tube amp chassis?
  145. motor run caps
  146. RH-84 Hum
  147. Regulator LD1085V Question
  148. Chasing Hum...
  149. What do you know about the 23D4?
  150. Vacuum State RTP3C
  151. Another Tubelad SE build
  152. Noisy DC filament power supply problem on an Aikido
  153. Aikido Phono Stage with Step-up Transformers
  154. 6-volt rectifier tube
  155. Replacing output transformer questions
  156. Hey SY, were you aware of this?
  157. Where is the best place to sell a pair of OTs?
  158. EL84 tube regulator
  159. Testing 6H2P on 600a
  160. Grid stoppers, clamping, blocking and crossover distortion.
  161. Fender 125A20B output transformers?
  162. Genrad 1630AV
  163. Gary Pimms "self bias ccs" - guide for dummies
  164. Using a PC as source? + "garage sale"
  165. loktal version of 6bl7
  166. RCA SE 6bq5 amp gain problems
  167. 12V AC to 6.3v DC simple supply for idiots
  168. PPAB with plate feedback, current-mirror driver
  169. LM317 oscillating in cathode circuit
  170. Tubelab SE amp question
  171. Help with RIAA stage schematics
  172. 829B/3E29 "Triode" Push Pull Paralleled Sections
  173. Phantom Bidders on eBay
  174. Complicated psuedo-scope question
  175. Help me choose between two designs
  176. Miller Capacitance AGAIN!
  177. Channel switching / Relay / board
  178. Tossie's valve world site
  179. What is the purpose of resistive load at line output trans?
  180. 8608 pentode
  181. #26 pre amp
  182. my third RH84
  183. Miller Capacitance of triode strapped pentode
  184. 50 set amp
  185. Valuable Valves
  186. Allowable screen voltages in triode-connected pentodes
  187. grounding cable
  188. SS Driver and splitter stages used for PP tube output???
  189. Resistance coupled cascaded amplifier
  190. 6SL7 alternatives?
  191. Dynaco st70 vs Heathkit W5M
  192. Ceasar II - HighEnd Tube Mono Block Project
  193. Cool amp
  194. output tube blocking distortion problem
  195. HP 8903 software posted
  196. Rectifier for 900v DC
  197. How good are these?
  198. Brimar 6V6G different operating parameters to later GT?
  199. RCA RK290 console question
  200. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  201. Simple 6V6 Push Pull Schematic
  202. remote help for RCA RK-290 console
  203. Suggestion for a 2x15 or 2x20 amp?
  204. Spud, Schade, PP, Anti-triode ECL86
  205. Posted new P-P power amp design
  206. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  207. Vintage RCA amps
  208. 6.3V/5A DC Fillament Schematic
  209. Can I use this output transformers with a 5965?
  210. Measuring Tube Gm
  211. Can I use this output transformers with a 5695?
  212. How to design a direct coupled SE amplifier?
  213. Ordered TechTube Valves today
  214. Should I buy and part out an old Hammond tube organ?
  215. 6N6P Unbalanced Sound?
  216. DC filaments for 6550s
  217. Obliterate, delete Vibrato or Reverb circuit in blackface-like amps
  218. My Copland CTA401 hums , help needed please
  219. Triode connected Pentodes in a cathode bias?
  220. Transformer as a voltage gain element
  221. Russian 6p31s tubes
  222. Ixcp 10m45s
  223. rectifier limiting resistors capacitor input
  224. arc V70 blue flash in KT90 tubes
  225. Choke?
  226. EL34 PP motorboating questions
  227. GU29 damaged
  228. PSUD2 questions
  229. Help lundahl-300bxls problem
  230. Srrp output question
  231. je lab 300b
  232. SET amp using Triode-FET complementary feedback pair ?
  233. Monarch STA-100X Refurb
  234. What causes high THD in tube amps ?
  235. Cons / Pros
  236. Preamp 6v6 grid leak resistor value?
  237. Quick question about preamps
  238. Why are mesh plates supposed to be superior?
  239. 60's and 70's GE tubes
  240. What valves are pin compatible with ECC88 / 6DJ8?
  241. Eico HF-81 OPT specs
  242. Fender Super Twin P Xformer
  243. Audio Research V70 mains transformer rewiring for 220 volts.
  244. looking for fairly simple project for Eico 81 OPT's
  245. looking for fairly simple project for Eico 81 OPT's
  246. New Hybrid Driver/Amplifier
  247. OT: vacuum diode AM detector schematics ?
  248. Sad News about George Wright
  249. Finest Chinese Tube Preamp?
  250. 12B4 Line Stage + Phono Option

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