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  1. Weird Bias on Simple SE
  2. Help - noisy phono stage
  3. 2A3 Max Grid Current Rating?
  4. Futterman style 6AS7 OTL with other tubes
  5. Low/Mid-Watt Amps
  6. Calling all builders of the Swenson/Pimm HV Reg
  7. AZ1 problem: broken metal part
  8. More Grunt from Aikido Needed to drive PL509's
  9. Correct OPT and other adjustments on old Bogen amp
  10. Ebl 21 Se Amplifier
  11. OT primary impedance calculation
  12. Akai M5?
  13. Identify the DHT
  14. Fountek Altitude 3500, any opinions?
  15. 31 tube in output
  16. dynaco system- volume remains
  17. Left channel BAD in stereo! HELP please! It's my first tube set
  18. OPT with power transfrormer core
  19. 300b dpa
  20. IV single stage inverting Feedback Amp
  21. TechTubes - The return of Blackburn
  22. simple se how to wire a auxiliary cap
  23. Tradeoffs in analog circuit design, and so on...
  24. Has anyone Received The new Techtubes yet?
  25. 6P3S-E in place of 6V6
  26. EL34, KT88, High Voltage?, VTL..
  27. 100W 6L6 amp sounds harsh at high Volume
  28. Hickok 533 / 600 settings for 6GM8 / ECC86
  29. Need help: amp blowing fuses
  30. Best voltage reference device for a cascode BJT CCS?
  31. Tube power amp noise problem
  32. tube oscillator help.
  33. Finally have some big chokes, how would you use them?
  34. Tube amplifier
  35. Mesa Boogie bass amp quiet
  36. 12AX7 heater filament resistance
  37. Choke input LC chain questions..Q?, minload?
  38. LED bias for 12ax7 oscillator
  39. Yaqin VK-2100 hybrid running 4 ohm speakers
  40. VR shunt regulator or RC filter
  41. Screen Mode Mesh Plate?
  42. EL34 simple push pull class B : why 100W ?
  43. Scored Some Bendix 5992
  44. Tube Substitutions Online ???
  45. Resistor pack for tube amp
  46. Tube Phono Preamp PCB Ebay? are these any good
  47. Testing an EL84 as a 6V6
  48. Low Voltage (~16-20V) Tube
  49. Basic Oscilloscope question
  50. Cathodyne Questions
  51. 6922 for a Noob
  52. Cathodyne Phase splitter simulation problem?
  53. How would you improve this EL84 SE circuit?
  54. Power transformer HT/B+ voltages
  55. Help with cathode follower circuit
  56. RH84 bias change whith different el84 is use
  57. No more power transformers?
  58. K-502 Filament supply (or K-12M)
  59. **LOL** Chinese surround sound amp identification
  60. Tubelab SE driver gain
  61. MOSFET for power drive for low powered 845
  62. Aikido line & phono Guru's advice for a newbie pls
  63. Need Tube kits of above 75W Single Ended Class A amp
  64. First Project: 300B SET Monoblocks
  65. Where do you get those cool layout diagrams?
  66. Simple SE grounding -- metal spacers/standoffs?
  67. My Simple SE via Akihabara
  68. Power-On Time Delay Circuit
  69. GM-70 Build Issues
  70. Blue glass inside tubes
  71. Ruby Tuesdays
  72. Wich valve to start?
  73. Tubes that have round/curved plates. . .
  74. Calculating current capacity?
  75. AKAI 1710W R2R, OPT Question?
  76. Ringed Tube Grills / Guards ?
  77. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  78. Please help identify this tube - Shuguang 6922?
  79. Dedicated 6.3v filament transformer 240v primary
  80. can someone check this thread please
  81. Amp refurbishing question.....
  82. Tube mounting position
  83. 6N6P - recommended operating point
  84. Interstage transformer questions
  85. Help identifying resistor value
  86. New Audio Note M10
  87. K501 vs K12M
  88. what are these (i hope cheap) resistors ?
  89. Potentiometer value for 6SL7 input
  90. PSU Designer II question
  91. Lost Thread-High VOltage Regulated Power Supply
  92. 6B4G schematic - opinions please!!
  93. Plate current Question
  94. rh84 bias question.
  95. On/off LED wiring question
  96. Stabilized wood
  97. Heater to Cathode max voltage specs, including signal swings?
  98. Any 9- pin rectifier tubes with separate cathodes?
  99. Final checkout problems with Tubelab SE
  100. 6G-A4 anyone have a datasheet?
  101. Bias Protection Resistors in DC Coupled Amp
  102. EL84 push pull
  103. pcb printing companies
  104. Help! tube amp burnt?
  105. 43% UL connections
  106. Help with CATHODE resistor value on 6BM8 PP Amp
  107. SE EL34 schematic HELP: from two 6SL7's to One?
  108. no choke and transformers ratings
  109. Value of Resistors of EL34
  110. bass preamp redux
  111. Power Transformer spec questions. Will it work or burn up?
  112. These Hong Kong amps have me bummed
  113. Looking for a cheap dual pentode
  114. Adding panel meters to Simple SE?
  115. Building a 12B4 Line Stage
  116. Speaker sounds blown...but isn't
  117. Static noise in K-16LS
  118. Scratchy clicky noise coming from homemade 6L6 tube amp
  119. Rowe AMI jukebox amp
  120. Does this power supply make any sense to you?
  121. Zener Diode Question
  122. 829B as LTP?
  123. Need a little help with Aikido 6n1p/6n6p
  124. Power switch location..
  125. Mini Millet (starving student) and iPod??
  126. valve preamp for quad 303
  127. Paging Wavebourn - article on Russian caps...
  128. I'm about to drive a stake thru the heart of my Aikido linestage
  129. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  130. Model 16LS Stereo Integrated Tube Amplifier
  131. hum on pre-amp when volume is turned up
  132. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  133. Interesting circuit, filter question.
  134. Choke Voltage ratings
  135. Hole drills
  136. Major amp circuit redesign- need some expert advice
  137. Daft Hybrid Amp
  138. 6n18-v tube amp
  139. Old big/long plate 12AX7's & 12AT7's
  140. in progress
  141. JTM45 clone
  142. A good tube amplifier power supply
  143. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  144. El34 Se
  145. Question on choke
  146. Simple SE output transformer: James or Edcor?
  147. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  148. SET tube replacement
  149. Some kind of buffer/preamp for my SS guitar amp fx loop
  150. VALVOLOZZO triode amp with toroids output trafo...help me
  151. Old amp kit making noise and its getting OLD.
  152. Another Tube pre query !
  153. Simple SE aux capacitor
  154. do 6h30 glow at the top only
  155. canadian source for triad choke?
  156. Fork vs. Sleeve Terminal Octal Sockets.
  157. Step down grid choke vs. interstage transformer
  158. Who knows James 6123HS parameters? Or where to ask
  159. Advantage of a FET-BJT CCS vs BJT only
  160. Question - PCB Design with Multisim/Ultiboard
  161. Trouble choke loading tube in regulated supply
  162. PSUD newbie: modeling Tubelab SE
  163. Bassman Schematic Alterations
  164. Fixed Bias adjustment
  165. web resource for tube pricing?
  166. Need help on Kenwood KR 7070
  167. 110v or 220v, how can you tell?
  168. Calling UK builders Simple SE, Pre & Phono advice
  169. Stoked about new volume control for my Simple SE
  170. Tubes Down Under...
  171. To anyone using 808s
  172. Grounded power supply cord on a transformerless amp ?
  173. Documenting SimpleSE FRED Problem
  174. PP KT88 Mono blocks?
  175. Looking for 6.3V 1A ccs heater supply for dht
  176. testing for the ratios on old opt's
  177. Any Transformer Winders?
  178. Output trans plate load question 5687 vs 5965
  179. KT88 triode strapped question
  180. 6528/8080 Triode - NOS Only ???
  181. Opinions gratefully recieved.
  182. Wiring Power Transformer in Parallel
  183. Is there a best location for a volume control?
  184. bass guitar preamp
  185. P2P vs PCB
  186. Help on EL84 / ecc83 SE project -very low volume
  187. 4E27 Triode connection SPICE model
  188. 300B driving 845
  189. Breaking in your tubes?
  190. 6SN7 equivalents in B9A
  191. Figuring out how many watts I need
  192. How do I tell whether a different replacement output transformer will be ok?
  193. OPT linestage question
  194. 6AS7 preamp buffer
  195. Where to put the MV ?
  196. 5u4g input capacitor
  197. Chassis metal advantages/disadvantages?
  198. Experience please: Tung-Sol 6L6GC STR
  199. Transformer winding resistances
  200. Capacitor Voltage Rating Question
  201. Oh my where to begin!? PTP related question.
  202. tube bayonet pin gone.
  203. Attn: Glass_painter - Pioneer SM-83 Transformers Dissected
  204. Please help ID this DIY tube monoblocks
  205. Amp thinks it's a receiver ??
  206. Anyone remember heathkit s99?
  207. Blue Voodoo Solid State Rects to Tube Rects?
  208. Renovation of fifty years old tube amplifier
  209. Big Boss: a simple and basic el84 PP amp in progress
  210. Line Stage for Mikael SE KT88
  211. DIY tube guitar amp oscillating, please help!
  212. Philips EL3536
  213. Tube Tester's
  214. Counterpoint SA-5000 P.S.U part identification needed
  215. 6GU7 in an Aikido?
  216. suggest about 9002/vt202 preamp please
  217. 7591a Alternatives
  218. tube rectifier plug in s-s replacement
  219. Oscillation in tube amps
  220. simple se cathode resistor question
  221. 6GT5 audio amp?
  222. How can a resistor "sound" good?
  223. Pin numbering, viewed from bottom or top?
  224. The Hybrid Class A amplifier
  225. 485V Regulated Power Supply
  226. 0B3 Glows Orange
  227. New Reissue tubes...Good/Bad???
  228. PP amp design , your thoughts please.
  229. Aikido + Phono section preamp
  230. Newcomb el84 amp
  231. Any Australians want to share shipping for valves from ESRC?
  232. 5718 Nuvistor ?
  233. Trimmer pot source?
  234. Pentode Miller Capacitance, and which spec value to use?
  235. Brother can you spare a preamp design?
  236. Reducing tremolo beating
  237. Russian tube equivelants
  238. Another question about russian tubes
  239. Why match tubes?
  240. My XPP OTL Headphoneamp
  241. Joining the Tubelab SE club
  242. Simple heater question
  243. Fender always taking care of tubes....
  244. Need small SET transformer (12B4)
  245. Red Hot 6L6GC
  246. How do these curves look?
  247. Why does lowering screen voltage reduce headroom?
  248. Class A2 Direct MOSFET Coupled SE
  249. Volume Surges Fender "The Twin" - transformer going?
  250. simple SE questions

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