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

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