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  1. -ve grid voltage
  2. Ming Da MC-3008-A2 Mono Blocks
  3. V-Reg, Gyrator, Low (relative) voltage tubes
  4. Simple Tube amp
  5. Jolida 502A replace power switch
  6. Tubelab build selector switch question
  7. Matching tubes pot in old Fenders
  8. tubes supplier
  9. RadioDaze out of the tube business
  10. 8000+ hours on my Simple SE
  11. C-L-C-parallel-R-C
  12. musical power supplies
  13. Trimpots sound better than equivalent resistors for biasing?
  14. Anyone have a simple circuit for . .
  15. PP Tube Biasing, how good is good enough?
  16. Aesthetics
  17. Point to point, from scatch build of the K-12G
  18. What 6550 for Conrad MV75
  19. Motorboating phono input on Stromberg Carlson ASR433
  20. Sunn Sceptre: Weak Vibrato Cause?
  21. Pioneer sr-101
  22. 6AU6 in Push Pull: Opinions please
  23. Audionote M7 and Foreplay III
  24. vintage triode
  25. Help with design review wanted
  26. 6J52P pentode driver?
  27. a gutar amp I built
  28. Looking for a good valve preamp
  29. Anyone try the "Hazen mod" to G3 supressor grid
  30. 6L6GC -Which Shuguang can take the Heat?
  31. Using Toroidal PTs as tube OTs - methods and sources
  32. With a little help... KT88 PP UL Amp
  33. TechTube Featured In November AudioXpress
  34. Yaqin MC-100b channel imbalance
  35. Regulated Tube Preamp question
  36. Has anybody purchased from Mable Audio?
  37. PS voltage changes after capacitor replacement
  38. Non-magnetic bolts that hold an output transformer together
  39. Audio Innovations Series 500 Rewire
  40. Which audio electrolytics in tube voltages -- Your comments please !
  41. Some general opt questions.
  42. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  43. modifying zenith 7d31 amp console
  44. Questions on JE Labs transformer coupled line stage
  45. Onix/Melody SP3 Upgrades and Mods
  46. Motorboating with Regulated Supply
  47. 27 & 6SN7 Preamp - Crossover
  48. Budget 2A3?
  49. first go at design - pp
  50. Tube Amp for MP3 Player
  51. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  52. Marshall amp loses bias
  53. Building the Baby Huey EL84 pushpull amplifier
  54. Tube Voltage Regulator, Is it worth the effort?
  55. Best tubeamp for metal, tight bass
  56. Donor stereo 845 amp- now what!?
  57. "Optimal" output grid loading?
  58. wax poured out!
  59. Yet another do-nothing tOOb hack.
  60. What is a CCS - how do you design one?
  61. Strange Aikido problem when home power fluctuates
  62. Need to regulate 450v --> 300v
  63. new to the forum and looking for el86 info
  64. Why not invert the Tubelab SE board?
  65. Steve Bench Crossover Questions
  66. Audio Note M7 - 7F7 CCS
  67. Anyone have schema for katodcoupled 6C33 P-P?
  68. Ltspice and Valve models
  69. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  70. How to identify type of bias used for my tube amp
  71. VR Tube Question
  72. Ampmaker Kits
  73. P-P with some muscle
  74. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  75. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  76. HELP HELP HELP mesa rectifier
  77. simple se with source selector
  78. Measuring tube/component temperature
  79. Parallel Single Ended Amplifier Design using Acro TO-290s?
  80. Elevate heater trouble
  81. Adjusting the sensitivity on a 6e2 magic eye tube
  82. tube amp for automobile / need ideas
  83. 6550A HF Amp
  84. problem - scratchy sound, rythmical
  85. eico st70 irons!what to do?
  86. How Lampizator CD tube player sound?
  87. Maestro soya amplificador
  88. Can I use my tube amp as a preamp ?
  89. Simple SE with 6BG6GA - magic smoke escapes...
  90. Shunt Cascode Power Valve Driver
  91. Did Siemens ever publish data for their own D3A ?
  92. Motor run caps as power supply filter
  93. Measure unknown choke?
  94. 6528a....HELP ME PLEASE...PLEASE..
  95. Are any of these tubes useful to me?
  96. Heaters The Key Too Sweet Tube Tone.
  97. PP Output Transformer design
  98. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  99. 832 ultra-linear push pull?
  100. 3A5 thoughts
  101. ECC86 vs. ECC88
  102. RH84 builder!
  103. 10GV8 Bias point for the K-12G
  104. EL34 amp blowing up, anode glowing red hot
  105. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  106. Tubelab SE w/Parafeed
  107. Chinese 805 SET monoblock
  108. Vreg or Ireg for Phono heaters
  109. Traynor YMV-1 Voicemaster to Guitar conversion
  110. Pentode preamp tube hum balance
  111. New (old) Friends
  112. How to avoid oscillation and get max BW out of crappy OPT
  113. Power Measurements at normal listening levels
  114. Best way to terminate unused OPT winding?
  115. patent on single-ended amplifier, anno 2008
  116. Headphones amplifier with highish gnfb
  117. Bias meter for AQ1008DT
  118. Change Tubes
  119. PLC84 amp
  120. Color Coding for Fisher 500B Iron
  121. Tubelab SE with 45 tubes only
  122. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  123. 10dB increase in volume needs what gain?
  124. El Cheapo feedback loop adjustment
  125. KT88 blocks? With E80CC + 6922 driver?
  126. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  127. Violator Amp
  128. What to do with 3500uF 650V caps???
  129. SS Rectification
  130. Passive filter at tube amp input
  131. Found this Trio WX-400
  132. PSUD & The JE Labs 2A3
  133. 815
  134. x1 Oscilloscope probes
  135. Iron LTP Schade-PP
  136. Single Ended Pentode Spud and Feedback
  137. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  138. DC on toroid PT windings
  139. Audible benefits of larger coupling caps than required?
  140. Any benefits of regulated current heater supply?
  141. Power Transformer Kaput ???
  142. aikido phono schematic qustion
  143. Easy question for experienced tubies
  144. valves dont sound so good when pink....
  145. Aikido Resistor Help
  146. Mobile Phone Interference
  147. Thank you DIY Audio
  148. Fisher 80-R Can't Find a Schematic
  149. SRPP layout
  150. Rogers E40a Amplifier Schematic
  151. Encapsulating OPTs
  152. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  153. JAN6418 and microphony
  154. can the 6n9s take 300v? (ru 6sl7)
  155. Output impedance of various MOSFET followers at low (<10mA) currents
  156. Big Box O' Tubes
  157. 6j7g 832a amp
  158. Quick Question on Dc coupling
  159. PP question - best driver stage!
  160. SRPP+, or did JRB "borrow" from here?
  161. 5651(A) 85Kr
  162. Ampex 6v6 PP.. worth saving?
  163. The DeForest 504 tube
  164. Sven 6P1P PP Amp
  165. Black 6V6GT - originals
  166. tube phasing for more power?
  167. measuring output transformer inductance?
  168. Question re paralleling common-cathode tube sections
  169. There's so much bait for dumb fishies out there!
  170. Biasing G3 in beamies
  171. 6DJ8 vs 6N1P (6H1N)
  172. Test equipment collection
  173. Rca mi-9358a
  174. FISHER - 500b Caps Leave Them In ???
  175. tek 454
  176. RCA Calypso
  177. New to Valve Amps and Confused???
  178. Anyone used the TL783 as a CCS
  179. Katelelo
  180. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  181. Ping netlist - ECC88 spice models
  182. Please help analyse 807 PPP
  183. DIY Tube Pre with remote
  184. P-P Katodfollower with 6c33c
  185. valve sub
  186. Help on outboard PSU for tube amp
  187. Looking for ARC LS8MKII circuit?
  188. Entire Assembly Glowing in 20 Seconds
  189. 6X5GT PS Problem
  190. Sad News About Blackburn / Tech Tube
  191. Loose top caps.
  192. rh807 choke question?
  193. 6021 Cascode
  194. 6U7-G as driver in a RH 807?
  195. Possible Ebay bargain
  196. Possible Ebay bargin
  197. 845 tube question
  198. Broken VCM163
  199. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  200. Datasheet wanted
  201. SE 833A Help
  202. PS ripple vs output impedance for PP AB1
  203. Simple SE with 807?
  204. Dynaco Bias Balance kit
  205. EL42 Tube
  206. 6GV8 at lowish voltage
  207. 703A tube source?
  208. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  209. "Back To Back" transformers
  210. Dual HF small signal pentodes ?
  211. pre amp output delay circuit?
  212. Standby voltages for tube circuits.
  213. SE Output transformers
  214. Advice on connector type for outboard PS
  215. Decent Junk Pile find! Need Advice suggestions etc.!
  216. Red Plate,Tube runaway, glowing screen grids
  217. Dogfish
  218. Anyone ever bought this Ebay Head amp?
  219. Rogers Cadet III (Mk3) - which input to use?
  220. Recycling a TT plinth as a tube amp chassis?
  221. motor run caps
  222. RH-84 Hum
  223. Regulator LD1085V Question
  224. Chasing Hum...
  225. What do you know about the 23D4?
  226. Vacuum State RTP3C
  227. Another Tubelad SE build
  228. Noisy DC filament power supply problem on an Aikido
  229. Aikido Phono Stage with Step-up Transformers
  230. 6-volt rectifier tube
  231. Replacing output transformer questions
  232. Hey SY, were you aware of this?
  233. Where is the best place to sell a pair of OTs?
  234. EL84 tube regulator
  235. Testing 6H2P on 600a
  236. Grid stoppers, clamping, blocking and crossover distortion.
  237. Fender 125A20B output transformers?
  238. Genrad 1630AV
  239. Gary Pimms "self bias ccs" - guide for dummies
  240. Using a PC as source? + "garage sale"
  241. loktal version of 6bl7
  242. RCA SE 6bq5 amp gain problems
  243. 12V AC to 6.3v DC simple supply for idiots
  244. PPAB with plate feedback, current-mirror driver
  245. LM317 oscillating in cathode circuit
  246. Tubelab SE amp question
  247. Help with RIAA stage schematics
  248. 829B/3E29 "Triode" Push Pull Paralleled Sections
  249. Phantom Bidders on eBay
  250. Complicated psuedo-scope question

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