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  1. RH84 builder!
  2. 10GV8 Bias point for the K-12G
  3. EL34 amp blowing up, anode glowing red hot
  4. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  5. Tubelab SE w/Parafeed
  6. Chinese 805 SET monoblock
  7. Vreg or Ireg for Phono heaters
  8. Pentode preamp tube hum balance
  9. New (old) Friends
  10. How to avoid oscillation and get max BW out of crappy OPT
  11. Power Measurements at normal listening levels
  12. Best way to terminate unused OPT winding?
  13. patent on single-ended amplifier, anno 2008
  14. Headphones amplifier with highish gnfb
  15. Bias meter for AQ1008DT
  16. Change Tubes
  17. PLC84 amp
  18. Color Coding for Fisher 500B Iron
  19. Tubelab SE with 45 tubes only
  20. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  21. 10dB increase in volume needs what gain?
  22. El Cheapo feedback loop adjustment
  23. KT88 blocks? With E80CC + 6922 driver?
  24. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  25. What to do with 3500uF 650V caps???
  26. SS Rectification
  27. Passive filter at tube amp input
  28. Found this Trio WX-400
  29. PSUD & The JE Labs 2A3
  30. 815
  31. x1 Oscilloscope probes
  32. Iron LTP Schade-PP
  33. Single Ended Pentode Spud and Feedback
  34. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  35. DC on toroid PT windings
  36. Audible benefits of larger coupling caps than required?
  37. Any benefits of regulated current heater supply?
  38. Power Transformer Kaput ???
  39. aikido phono schematic qustion
  40. Easy question for experienced tubies
  41. valves dont sound so good when pink....
  42. Aikido Resistor Help
  43. Mobile Phone Interference
  44. Thank you DIY Audio
  45. Fisher 80-R Can't Find a Schematic
  46. SRPP layout
  47. Rogers E40a Amplifier Schematic
  48. Encapsulating OPTs
  49. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  50. JAN6418 and microphony
  51. can the 6n9s take 300v? (ru 6sl7)
  52. Output impedance of various MOSFET followers at low (<10mA) currents
  53. Big Box O' Tubes
  54. 6j7g 832a amp
  55. Quick Question on Dc coupling
  56. PP question - best driver stage!
  57. SRPP+, or did JRB "borrow" from here?
  58. 5651(A) 85Kr
  59. Ampex 6v6 PP.. worth saving?
  60. The DeForest 504 tube
  61. Sven 6P1P PP Amp
  62. Black 6V6GT - originals
  63. tube phasing for more power?
  64. measuring output transformer inductance?
  65. Question re paralleling common-cathode tube sections
  66. There's so much bait for dumb fishies out there!
  67. Biasing G3 in beamies
  68. 6DJ8 vs 6N1P (6H1N)
  69. Test equipment collection
  70. Rca mi-9358a
  71. FISHER - 500b Caps Leave Them In ???
  72. tek 454
  73. RCA Calypso
  74. New to Valve Amps and Confused???
  75. Anyone used the TL783 as a CCS
  76. Katelelo
  77. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  78. Ping netlist - ECC88 spice models
  79. Please help analyse 807 PPP
  80. DIY Tube Pre with remote
  81. P-P Katodfollower with 6c33c
  82. valve sub
  83. Help on outboard PSU for tube amp
  84. Looking for ARC LS8MKII circuit?
  85. Entire Assembly Glowing in 20 Seconds
  86. 6X5GT PS Problem
  87. Sad News About Blackburn / Tech Tube
  88. Loose top caps.
  89. rh807 choke question?
  90. 6021 Cascode
  91. 6U7-G as driver in a RH 807?
  92. Possible Ebay bargain
  93. Possible Ebay bargin
  94. 845 tube question
  95. Broken VCM163
  96. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  97. Datasheet wanted
  98. SE 833A Help
  99. PS ripple vs output impedance for PP AB1
  100. Simple SE with 807?
  101. Dynaco Bias Balance kit
  102. EL42 Tube
  103. 6GV8 at lowish voltage
  104. 703A tube source?
  105. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  106. "Back To Back" transformers
  107. Dual HF small signal pentodes ?
  108. pre amp output delay circuit?
  109. Standby voltages for tube circuits.
  110. SE Output transformers
  111. Advice on connector type for outboard PS
  112. Decent Junk Pile find! Need Advice suggestions etc.!
  113. Red Plate,Tube runaway, glowing screen grids
  114. Dogfish
  115. Anyone ever bought this Ebay Head amp?
  116. Rogers Cadet III (Mk3) - which input to use?
  117. Recycling a TT plinth as a tube amp chassis?
  118. motor run caps
  119. RH-84 Hum
  120. Regulator LD1085V Question
  121. Chasing Hum...
  122. What do you know about the 23D4?
  123. Vacuum State RTP3C
  124. Another Tubelad SE build
  125. Noisy DC filament power supply problem on an Aikido
  126. Aikido Phono Stage with Step-up Transformers
  127. 6-volt rectifier tube
  128. Replacing output transformer questions
  129. Hey SY, were you aware of this?
  130. Where is the best place to sell a pair of OTs?
  131. EL84 tube regulator
  132. Testing 6H2P on 600a
  133. Grid stoppers, clamping, blocking and crossover distortion.
  134. Genrad 1630AV
  135. Gary Pimms "self bias ccs" - guide for dummies
  136. Using a PC as source? + "garage sale"
  137. loktal version of 6bl7
  138. RCA SE 6bq5 amp gain problems
  139. 12V AC to 6.3v DC simple supply for idiots
  140. PPAB with plate feedback, current-mirror driver
  141. LM317 oscillating in cathode circuit
  142. Tubelab SE amp question
  143. Help with RIAA stage schematics
  144. 829B/3E29 "Triode" Push Pull Paralleled Sections
  145. Phantom Bidders on eBay
  146. Complicated psuedo-scope question
  147. Help me choose between two designs
  148. Miller Capacitance AGAIN!
  149. Channel switching / Relay / board
  150. Tossie's valve world site
  151. What is the purpose of resistive load at line output trans?
  152. 8608 pentode
  153. #26 pre amp
  154. my third RH84
  155. Miller Capacitance of triode strapped pentode
  156. 50 set amp
  157. Valuable Valves
  158. Allowable screen voltages in triode-connected pentodes
  159. grounding cable
  160. SS Driver and splitter stages used for PP tube output???
  161. Resistance coupled cascaded amplifier
  162. 6SL7 alternatives?
  163. Dynaco st70 vs Heathkit W5M
  164. Ceasar II - HighEnd Tube Mono Block Project
  165. Cool amp
  166. output tube blocking distortion problem
  167. HP 8903 software posted
  168. Rectifier for 900v DC
  169. How good are these?
  170. Brimar 6V6G different operating parameters to later GT?
  171. RCA RK290 console question
  172. pls help me, Buil my first AMP with 6H5C (=6AS7) tube.
  173. Simple 6V6 Push Pull Schematic
  174. remote help for RCA RK-290 console
  175. Suggestion for a 2x15 or 2x20 amp?
  176. Spud, Schade, PP, Anti-triode ECL86
  177. Posted new P-P power amp design
  178. Steve Bench LR Phono Amp. with (Sowter or Dave irons)
  179. Vintage RCA amps
  180. 6.3V/5A DC Fillament Schematic
  181. Can I use this output transformers with a 5965?
  182. Measuring Tube Gm
  183. Can I use this output transformers with a 5695?
  184. How to design a direct coupled SE amplifier?
  185. Ordered TechTube Valves today
  186. Should I buy and part out an old Hammond tube organ?
  187. 6N6P Unbalanced Sound?
  188. DC filaments for 6550s
  189. My Copland CTA401 hums , help needed please
  190. Triode connected Pentodes in a cathode bias?
  191. Transformer as a voltage gain element
  192. Russian 6p31s tubes
  193. Ixcp 10m45s
  194. rectifier limiting resistors capacitor input
  195. arc V70 blue flash in KT90 tubes
  196. Choke?
  197. EL34 PP motorboating questions
  198. GU29 damaged
  199. PSUD2 questions
  200. Help lundahl-300bxls problem
  201. Srrp output question
  202. je lab 300b
  203. SET amp using Triode-FET complementary feedback pair ?
  204. Monarch STA-100X Refurb
  205. What causes high THD in tube amps ?
  206. Cons / Pros
  207. Preamp 6v6 grid leak resistor value?
  208. Quick question about preamps
  209. Why are mesh plates supposed to be superior?
  210. 60's and 70's GE tubes
  211. What valves are pin compatible with ECC88 / 6DJ8?
  212. Eico HF-81 OPT specs
  213. Audio Research V70 mains transformer rewiring for 220 volts.
  214. looking for fairly simple project for Eico 81 OPT's
  215. looking for fairly simple project for Eico 81 OPT's
  216. New Hybrid Driver/Amplifier
  217. OT: vacuum diode AM detector schematics ?
  218. Sad News about George Wright
  219. Finest Chinese Tube Preamp?
  220. 12B4 Line Stage + Phono Option
  221. Crinkly tube getter Is this bad?
  222. ??? Output Transformer - Silicon Steel or Amorphous
  223. Is it time for another CCS Group Buy?
  224. Am I Going to Kill This Amp?
  225. My version of the Simple EL84 or rise of the anti-triode.
  226. Intercomponent ground loop hum
  227. Connecting the heater to the cathode in rectifier tube
  228. EF86 replacement
  229. Super Simple Valve Pre-amp Suggestions?
  230. 6V6 P-P Amp From RCA Manual RC-19
  231. phono stage woes...
  232. stereo SE kt88 build ... abdellah diyaudioprojects design
  233. Mounting filament transformers under chassis?
  234. More impedances for Hammond 125E
  235. Troubleshooting Push-Pull 2A3 (please help)
  236. Lost a channel in my TSE
  237. 6sl7 srpp kt66 se
  238. asking about 6sn7 and 2a3 tubes
  239. help w/ Eico hf-81
  240. Hammond PT power ratings
  241. JVC/Delmonico console info
  242. my TubeLab Amps
  243. Issues with grid choke
  244. Sharp reg. for tubelab se
  245. Calibration of Mercury 1000 tube test set
  246. 6v6 music machine build help!
  247. PCF801 Suggestions
  248. el84 200V Vg2 curves
  249. What's the advantage of E-linear
  250. Tube microphonics (article)

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