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  1. Akai M5?
  2. Identify the DHT
  3. Fountek Altitude 3500, any opinions?
  4. 31 tube in output
  5. dynaco system- volume remains
  6. Left channel BAD in stereo! HELP please! It's my first tube set
  7. OPT with power transfrormer core
  8. 300b dpa
  9. IV single stage inverting Feedback Amp
  10. TechTubes - The return of Blackburn
  11. simple se how to wire a auxiliary cap
  12. Tradeoffs in analog circuit design, and so on...
  13. Has anyone Received The new Techtubes yet?
  14. 6P3S-E in place of 6V6
  15. EL34, KT88, High Voltage?, VTL..
  16. 100W 6L6 amp sounds harsh at high Volume
  17. Hickok 533 / 600 settings for 6GM8 / ECC86
  18. Need help: amp blowing fuses
  19. Best voltage reference device for a cascode BJT CCS?
  20. Tube power amp noise problem
  21. tube oscillator help.
  22. Finally have some big chokes, how would you use them?
  23. Tube amplifier
  24. Mesa Boogie bass amp quiet
  25. 12AX7 heater filament resistance
  26. Choke input LC chain questions..Q?, minload?
  27. LED bias for 12ax7 oscillator
  28. Yaqin VK-2100 hybrid running 4 ohm speakers
  29. VR shunt regulator or RC filter
  30. Screen Mode Mesh Plate?
  31. EL34 simple push pull class B : why 100W ?
  32. Scored Some Bendix 5992
  33. Tube Substitutions Online ???
  34. Resistor pack for tube amp
  35. Tube Phono Preamp PCB Ebay? are these any good
  36. Testing an EL84 as a 6V6
  37. Low Voltage (~16-20V) Tube
  38. Basic Oscilloscope question
  39. Cathodyne Questions
  40. 6922 for a Noob
  41. Cathodyne Phase splitter simulation problem?
  42. How would you improve this EL84 SE circuit?
  43. Power transformer HT/B+ voltages
  44. Help with cathode follower circuit
  45. RH84 bias change whith different el84 is use
  46. No more power transformers?
  47. K-502 Filament supply (or K-12M)
  48. **LOL** Chinese surround sound amp identification
  49. Tubelab SE driver gain
  50. MOSFET for power drive for low powered 845
  51. Aikido line & phono Guru's advice for a newbie pls
  52. Need Tube kits of above 75W Single Ended Class A amp
  53. First Project: 300B SET Monoblocks
  54. Where do you get those cool layout diagrams?
  55. Simple SE grounding -- metal spacers/standoffs?
  56. My Simple SE via Akihabara
  57. Power-On Time Delay Circuit
  58. GM-70 Build Issues
  59. Blue glass inside tubes
  60. Ruby Tuesdays
  61. Wich valve to start?
  62. Tubes that have round/curved plates. . .
  63. Calculating current capacity?
  64. AKAI 1710W R2R, OPT Question?
  65. Ringed Tube Grills / Guards ?
  66. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  67. Please help identify this tube - Shuguang 6922?
  68. Dedicated 6.3v filament transformer 240v primary
  69. can someone check this thread please
  70. Amp refurbishing question.....
  71. Tube mounting position
  72. 6N6P - recommended operating point
  73. Interstage transformer questions
  74. Help identifying resistor value
  75. New Audio Note M10
  76. K501 vs K12M
  77. what are these (i hope cheap) resistors ?
  78. Potentiometer value for 6SL7 input
  79. PSU Designer II question
  80. Lost Thread-High VOltage Regulated Power Supply
  81. 6B4G schematic - opinions please!!
  82. Plate current Question
  83. rh84 bias question.
  84. On/off LED wiring question
  85. Stabilized wood
  86. Heater to Cathode max voltage specs, including signal swings?
  87. Any 9- pin rectifier tubes with separate cathodes?
  88. Final checkout problems with Tubelab SE
  89. 6G-A4 anyone have a datasheet?
  90. Bias Protection Resistors in DC Coupled Amp
  91. EL84 push pull
  92. pcb printing companies
  93. Help! tube amp burnt?
  94. 43% UL connections
  95. Help with CATHODE resistor value on 6BM8 PP Amp
  96. SE EL34 schematic HELP: from two 6SL7's to One?
  97. no choke and transformers ratings
  98. Value of Resistors of EL34
  99. bass preamp redux
  100. Power Transformer spec questions. Will it work or burn up?
  101. These Hong Kong amps have me bummed
  102. Looking for a cheap dual pentode
  103. Adding panel meters to Simple SE?
  104. Building a 12B4 Line Stage
  105. Speaker sounds blown...but isn't
  106. Static noise in K-16LS
  107. Scratchy clicky noise coming from homemade 6L6 tube amp
  108. Rowe AMI jukebox amp
  109. Does this power supply make any sense to you?
  110. Zener Diode Question
  111. 829B as LTP?
  112. Need a little help with Aikido 6n1p/6n6p
  113. Power switch location..
  114. Mini Millet (starving student) and iPod??
  115. valve preamp for quad 303
  116. Paging Wavebourn - article on Russian caps...
  117. I'm about to drive a stake thru the heart of my Aikido linestage
  118. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  119. Model 16LS Stereo Integrated Tube Amplifier
  120. hum on pre-amp when volume is turned up
  121. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  122. Interesting circuit, filter question.
  123. Choke Voltage ratings
  124. Hole drills
  125. Major amp circuit redesign- need some expert advice
  126. Daft Hybrid Amp
  127. 6n18-v tube amp
  128. Old big/long plate 12AX7's & 12AT7's
  129. in progress
  130. JTM45 clone
  131. A good tube amplifier power supply
  132. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  133. El34 Se
  134. Question on choke
  135. Simple SE output transformer: James or Edcor?
  136. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  137. SET tube replacement
  138. Some kind of buffer/preamp for my SS guitar amp fx loop
  139. VALVOLOZZO triode amp with toroids output trafo...help me
  140. Old amp kit making noise and its getting OLD.
  141. Another Tube pre query !
  142. Simple SE aux capacitor
  143. do 6h30 glow at the top only
  144. canadian source for triad choke?
  145. Fork vs. Sleeve Terminal Octal Sockets.
  146. Step down grid choke vs. interstage transformer
  147. Who knows James 6123HS parameters? Or where to ask
  148. Advantage of a FET-BJT CCS vs BJT only
  149. Question - PCB Design with Multisim/Ultiboard
  150. Trouble choke loading tube in regulated supply
  151. PSUD newbie: modeling Tubelab SE
  152. Bassman Schematic Alterations
  153. Fixed Bias adjustment
  154. web resource for tube pricing?
  155. Need help on Kenwood KR 7070
  156. 110v or 220v, how can you tell?
  157. Calling UK builders Simple SE, Pre & Phono advice
  158. Stoked about new volume control for my Simple SE
  159. Tubes Down Under...
  160. To anyone using 808s
  161. Grounded power supply cord on a transformerless amp ?
  162. Documenting SimpleSE FRED Problem
  163. PP KT88 Mono blocks?
  164. Looking for 6.3V 1A ccs heater supply for dht
  165. testing for the ratios on old opt's
  166. Any Transformer Winders?
  167. Output trans plate load question 5687 vs 5965
  168. KT88 triode strapped question
  169. 6528/8080 Triode - NOS Only ???
  170. Opinions gratefully recieved.
  171. Wiring Power Transformer in Parallel
  172. Is there a best location for a volume control?
  173. bass guitar preamp
  174. P2P vs PCB
  175. Help on EL84 / ecc83 SE project -very low volume
  176. 4E27 Triode connection SPICE model
  177. 300B driving 845
  178. Breaking in your tubes?
  179. 6SN7 equivalents in B9A
  180. Figuring out how many watts I need
  181. How do I tell whether a different replacement output transformer will be ok?
  182. OPT linestage question
  183. 6AS7 preamp buffer
  184. Where to put the MV ?
  185. 5u4g input capacitor
  186. Chassis metal advantages/disadvantages?
  187. Experience please: Tung-Sol 6L6GC STR
  188. Transformer winding resistances
  189. Capacitor Voltage Rating Question
  190. Oh my where to begin!? PTP related question.
  191. tube bayonet pin gone.
  192. Attn: Glass_painter - Pioneer SM-83 Transformers Dissected
  193. Please help ID this DIY tube monoblocks
  194. Amp thinks it's a receiver ??
  195. Anyone remember heathkit s99?
  196. Blue Voodoo Solid State Rects to Tube Rects?
  197. Renovation of fifty years old tube amplifier
  198. Big Boss: a simple and basic el84 PP amp in progress
  199. Line Stage for Mikael SE KT88
  200. DIY tube guitar amp oscillating, please help!
  201. Philips EL3536
  202. Tube Tester's
  203. Counterpoint SA-5000 P.S.U part identification needed
  204. 6GU7 in an Aikido?
  205. suggest about 9002/vt202 preamp please
  206. 7591a Alternatives
  207. tube rectifier plug in s-s replacement
  208. Oscillation in tube amps
  209. simple se cathode resistor question
  210. 6GT5 audio amp?
  211. How can a resistor "sound" good?
  212. Pin numbering, viewed from bottom or top?
  213. The Hybrid Class A amplifier
  214. 485V Regulated Power Supply
  215. 0B3 Glows Orange
  216. New Reissue tubes...Good/Bad???
  217. PP amp design , your thoughts please.
  218. Aikido + Phono section preamp
  219. Newcomb el84 amp
  220. Any Australians want to share shipping for valves from ESRC?
  221. 5718 Nuvistor ?
  222. Trimmer pot source?
  223. Pentode Miller Capacitance, and which spec value to use?
  224. Brother can you spare a preamp design?
  225. Reducing tremolo beating
  226. Russian tube equivelants
  227. Another question about russian tubes
  228. Why match tubes?
  229. My XPP OTL Headphoneamp
  230. Joining the Tubelab SE club
  231. Simple heater question
  232. Fender always taking care of tubes....
  233. Need small SET transformer (12B4)
  234. Red Hot 6L6GC
  235. How do these curves look?
  236. Why does lowering screen voltage reduce headroom?
  237. Class A2 Direct MOSFET Coupled SE
  238. Volume Surges Fender "The Twin" - transformer going?
  239. simple SE questions
  240. Best tubes for ~100w 1.9k p-p?
  241. Installing bleeding resistors
  242. Capacitor Comparison Conundrum
  243. Tubelab SE socket raise
  244. RH84 finish!
  245. cathode biasing question
  246. Modding an old tube amp???
  247. More snake oil
  248. simple se success!
  249. Rectifier swap out?
  250. Input impedance of tubelab simple se

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