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  1. vintage triode
  2. Help with design review wanted
  3. 6J52P pentode driver?
  4. a gutar amp I built
  5. Looking for a good valve preamp
  6. Anyone try the "Hazen mod" to G3 supressor grid
  7. 6L6GC -Which Shuguang can take the Heat?
  8. Using Toroidal PTs as tube OTs - methods and sources
  9. With a little help... KT88 PP UL Amp
  10. TechTube Featured In November AudioXpress
  11. Yaqin MC-100b channel imbalance
  12. Regulated Tube Preamp question
  13. Has anybody purchased from Mable Audio?
  14. PS voltage changes after capacitor replacement
  15. Non-magnetic bolts that hold an output transformer together
  16. Audio Innovations Series 500 Rewire
  17. Which audio electrolytics in tube voltages -- Your comments please !
  18. Some general opt questions.
  19. Looking for ANYTHING on the Audioromy 838 w/805A Tube..
  20. modifying zenith 7d31 amp console
  21. Questions on JE Labs transformer coupled line stage
  22. Onix/Melody SP3 Upgrades and Mods
  23. Motorboating with Regulated Supply
  24. 27 & 6SN7 Preamp - Crossover
  25. Budget 2A3?
  26. first go at design - pp
  27. Tube Amp for MP3 Player
  28. Sonic signatures of KT88, 300B, 805, 845 in SET & PP Configurations
  29. Marshall amp loses bias
  30. Building the Baby Huey EL84 pushpull amplifier
  31. Tube Voltage Regulator, Is it worth the effort?
  32. Best tubeamp for metal, tight bass
  33. Donor stereo 845 amp- now what!?
  34. "Optimal" output grid loading?
  35. wax poured out!
  36. Yet another do-nothing tOOb hack.
  37. What is a CCS - how do you design one?
  38. Strange Aikido problem when home power fluctuates
  39. Need to regulate 450v --> 300v
  40. new to the forum and looking for el86 info
  41. Why not invert the Tubelab SE board?
  42. Steve Bench Crossover Questions
  43. Audio Note M7 - 7F7 CCS
  44. Anyone have schema for katodcoupled 6C33 P-P?
  45. Ltspice and Valve models
  46. VTV Push-Pull 6SN7/KT88 Amp: DIY or China?
  47. How to identify type of bias used for my tube amp
  48. VR Tube Question
  49. Ampmaker Kits
  50. P-P with some muscle
  51. buzz w/ nothing plugged into inputs. Goes away once jacked in.
  52. CV6 / CV1135 / E1148 / VT232 VHF oscillator triode data
  53. HELP HELP HELP mesa rectifier
  54. simple se with source selector
  55. Measuring tube/component temperature
  56. Parallel Single Ended Amplifier Design using Acro TO-290s?
  57. Elevate heater trouble
  58. Adjusting the sensitivity on a 6e2 magic eye tube
  59. tube amp for automobile / need ideas
  60. 6550A HF Amp
  61. problem - scratchy sound, rythmical
  62. eico st70 irons!what to do?
  63. How Lampizator CD tube player sound?
  64. Maestro soya amplificador
  65. Can I use my tube amp as a preamp ?
  66. Simple SE with 6BG6GA - magic smoke escapes...
  67. Shunt Cascode Power Valve Driver
  68. Did Siemens ever publish data for their own D3A ?
  69. Motor run caps as power supply filter
  70. Measure unknown choke?
  71. 6528a....HELP ME PLEASE...PLEASE..
  72. Are any of these tubes useful to me?
  73. Heaters The Key Too Sweet Tube Tone.
  74. PP Output Transformer design
  75. "Kingfisher" P-P Amp using 7591A Outputs and Fisher 500B Iron
  76. 832 ultra-linear push pull?
  77. 3A5 thoughts
  78. ECC86 vs. ECC88
  79. RH84 builder!
  80. 10GV8 Bias point for the K-12G
  81. EL34 amp blowing up, anode glowing red hot
  82. Steve Bench's LR Phono Stage - Cathode Bias Circuit Question
  83. Tubelab SE w/Parafeed
  84. Chinese 805 SET monoblock
  85. Vreg or Ireg for Phono heaters
  86. Traynor YMV-1 Voicemaster to Guitar conversion
  87. Pentode preamp tube hum balance
  88. New (old) Friends
  89. How to avoid oscillation and get max BW out of crappy OPT
  90. Power Measurements at normal listening levels
  91. Best way to terminate unused OPT winding?
  92. patent on single-ended amplifier, anno 2008
  93. Headphones amplifier with highish gnfb
  94. Bias meter for AQ1008DT
  95. Change Tubes
  96. PLC84 amp
  97. Color Coding for Fisher 500B Iron
  98. Tubelab SE with 45 tubes only
  99. 6L6GC, ECC33, EF37 Amp.. Just cant get it right
  100. 10dB increase in volume needs what gain?
  101. El Cheapo feedback loop adjustment
  102. KT88 blocks? With E80CC + 6922 driver?
  103. 200+/- USA Tubes Plus "Weston Model 891" Tube Checker
  104. Violator Amp
  105. What to do with 3500uF 650V caps???
  106. SS Rectification
  107. Passive filter at tube amp input
  108. Found this Trio WX-400
  109. PSUD & The JE Labs 2A3
  110. 815
  111. x1 Oscilloscope probes
  112. Iron LTP Schade-PP
  113. Single Ended Pentode Spud and Feedback
  114. Yes, I've searched. Can I use a PP OPT in a SE amp ?
  115. DC on toroid PT windings
  116. Audible benefits of larger coupling caps than required?
  117. Any benefits of regulated current heater supply?
  118. Power Transformer Kaput ???
  119. aikido phono schematic qustion
  120. Easy question for experienced tubies
  121. valves dont sound so good when pink....
  122. Aikido Resistor Help
  123. Mobile Phone Interference
  124. Thank you DIY Audio
  125. Fisher 80-R Can't Find a Schematic
  126. SRPP layout
  127. Rogers E40a Amplifier Schematic
  128. Encapsulating OPTs
  129. Does anyone have 6BQ6 (sweep tube) triode plate curves to share?
  130. JAN6418 and microphony
  131. can the 6n9s take 300v? (ru 6sl7)
  132. Output impedance of various MOSFET followers at low (<10mA) currents
  133. Big Box O' Tubes
  134. 6j7g 832a amp
  135. Quick Question on Dc coupling
  136. PP question - best driver stage!
  137. SRPP+, or did JRB "borrow" from here?
  138. 5651(A) 85Kr
  139. Ampex 6v6 PP.. worth saving?
  140. The DeForest 504 tube
  141. Sven 6P1P PP Amp
  142. Black 6V6GT - originals
  143. tube phasing for more power?
  144. measuring output transformer inductance?
  145. Question re paralleling common-cathode tube sections
  146. There's so much bait for dumb fishies out there!
  147. Biasing G3 in beamies
  148. 6DJ8 vs 6N1P (6H1N)
  149. Test equipment collection
  150. Rca mi-9358a
  151. FISHER - 500b Caps Leave Them In ???
  152. tek 454
  153. RCA Calypso
  154. New to Valve Amps and Confused???
  155. Anyone used the TL783 as a CCS
  156. Katelelo
  157. EFE-1 (PP EL-34) by Miolljub Mile Nestorovic
  158. Ping netlist - ECC88 spice models
  159. Please help analyse 807 PPP
  160. DIY Tube Pre with remote
  161. P-P Katodfollower with 6c33c
  162. valve sub
  163. Help on outboard PSU for tube amp
  164. Looking for ARC LS8MKII circuit?
  165. Entire Assembly Glowing in 20 Seconds
  166. 6X5GT PS Problem
  167. Sad News About Blackburn / Tech Tube
  168. Loose top caps.
  169. rh807 choke question?
  170. 6021 Cascode
  171. 6U7-G as driver in a RH 807?
  172. Possible Ebay bargain
  173. Possible Ebay bargin
  174. 845 tube question
  175. Broken VCM163
  176. my ongoing amp project since 2004 or so, ver. 13.29.b1.xx.n
  177. Datasheet wanted
  178. SE 833A Help
  179. PS ripple vs output impedance for PP AB1
  180. Simple SE with 807?
  181. Dynaco Bias Balance kit
  182. EL42 Tube
  183. 6GV8 at lowish voltage
  184. 703A tube source?
  185. Music Angel EL34 PP + 6N2 schematics ( MINIL3 )
  186. "Back To Back" transformers
  187. Dual HF small signal pentodes ?
  188. pre amp output delay circuit?
  189. Standby voltages for tube circuits.
  190. SE Output transformers
  191. Advice on connector type for outboard PS
  192. Decent Junk Pile find! Need Advice suggestions etc.!
  193. Red Plate,Tube runaway, glowing screen grids
  194. Dogfish
  195. Anyone ever bought this Ebay Head amp?
  196. Rogers Cadet III (Mk3) - which input to use?
  197. Recycling a TT plinth as a tube amp chassis?
  198. motor run caps
  199. RH-84 Hum
  200. Regulator LD1085V Question
  201. Chasing Hum...
  202. What do you know about the 23D4?
  203. Vacuum State RTP3C
  204. Another Tubelad SE build
  205. Noisy DC filament power supply problem on an Aikido
  206. Aikido Phono Stage with Step-up Transformers
  207. 6-volt rectifier tube
  208. Replacing output transformer questions
  209. Hey SY, were you aware of this?
  210. Where is the best place to sell a pair of OTs?
  211. EL84 tube regulator
  212. Testing 6H2P on 600a
  213. Grid stoppers, clamping, blocking and crossover distortion.
  214. Fender 125A20B output transformers?
  215. Genrad 1630AV
  216. Gary Pimms "self bias ccs" - guide for dummies
  217. Using a PC as source? + "garage sale"
  218. loktal version of 6bl7
  219. RCA SE 6bq5 amp gain problems
  220. 12V AC to 6.3v DC simple supply for idiots
  221. PPAB with plate feedback, current-mirror driver
  222. LM317 oscillating in cathode circuit
  223. Tubelab SE amp question
  224. Help with RIAA stage schematics
  225. 829B/3E29 "Triode" Push Pull Paralleled Sections
  226. Phantom Bidders on eBay
  227. Complicated psuedo-scope question
  228. Help me choose between two designs
  229. Miller Capacitance AGAIN!
  230. Channel switching / Relay / board
  231. Tossie's valve world site
  232. What is the purpose of resistive load at line output trans?
  233. 8608 pentode
  234. #26 pre amp
  235. my third RH84
  236. Miller Capacitance of triode strapped pentode
  237. 50 set amp
  238. Valuable Valves
  239. Allowable screen voltages in triode-connected pentodes
  240. grounding cable
  241. SS Driver and splitter stages used for PP tube output???
  242. Resistance coupled cascaded amplifier
  243. 6SL7 alternatives?
  244. Dynaco st70 vs Heathkit W5M
  245. Ceasar II - HighEnd Tube Mono Block Project
  246. Cool amp
  247. output tube blocking distortion problem
  248. HP 8903 software posted
  249. Rectifier for 900v DC
  250. How good are these?

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