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  1. Help with cathode follower circuit
  2. RH84 bias change whith different el84 is use
  3. No more power transformers?
  4. K-502 Filament supply (or K-12M)
  5. **LOL** Chinese surround sound amp identification
  6. MOSFET for power drive for low powered 845
  7. Aikido line & phono Guru's advice for a newbie pls
  8. Need Tube kits of above 75W Single Ended Class A amp
  9. First Project: 300B SET Monoblocks
  10. Where do you get those cool layout diagrams?
  11. Power-On Time Delay Circuit
  12. GM-70 Build Issues
  13. Blue glass inside tubes
  14. Ruby Tuesdays
  15. Wich valve to start?
  16. Tubes that have round/curved plates. . .
  17. Calculating current capacity?
  18. AKAI 1710W R2R, OPT Question?
  19. Ringed Tube Grills / Guards ?
  20. Recommend me a warm, smooth sounding 6922, 6DJ8, ECC88 or equivalent
  21. Please help identify this tube - Shuguang 6922?
  22. Dedicated 6.3v filament transformer 240v primary
  23. can someone check this thread please
  24. Amp refurbishing question.....
  25. Tube mounting position
  26. 6N6P - recommended operating point
  27. Interstage transformer questions
  28. Help identifying resistor value
  29. New Audio Note M10
  30. K501 vs K12M
  31. what are these (i hope cheap) resistors ?
  32. Potentiometer value for 6SL7 input
  33. PSU Designer II question
  34. Lost Thread-High VOltage Regulated Power Supply
  35. 6B4G schematic - opinions please!!
  36. Plate current Question
  37. rh84 bias question.
  38. On/off LED wiring question
  39. Heater to Cathode max voltage specs, including signal swings?
  40. Any 9- pin rectifier tubes with separate cathodes?
  41. 6G-A4 anyone have a datasheet?
  42. Bias Protection Resistors in DC Coupled Amp
  43. EL84 push pull
  44. pcb printing companies
  45. Help! tube amp burnt?
  46. 43% UL connections
  47. Help with CATHODE resistor value on 6BM8 PP Amp
  48. SE EL34 schematic HELP: from two 6SL7's to One?
  49. no choke and transformers ratings
  50. Value of Resistors of EL34
  51. Power Transformer spec questions. Will it work or burn up?
  52. These Hong Kong amps have me bummed
  53. Looking for a cheap dual pentode
  54. Building a 12B4 Line Stage
  55. Speaker sounds blown...but isn't
  56. Static noise in K-16LS
  57. Scratchy clicky noise coming from homemade 6L6 tube amp
  58. Rowe AMI jukebox amp
  59. Does this power supply make any sense to you?
  60. Zener Diode Question
  61. 829B as LTP?
  62. Need a little help with Aikido 6n1p/6n6p
  63. Power switch location..
  64. Mini Millet (starving student) and iPod??
  65. valve preamp for quad 303
  66. Paging Wavebourn - article on Russian caps...
  67. I'm about to drive a stake thru the heart of my Aikido linestage
  68. questions on Mikael Abdellah circuit optimized for EL34 triode operation
  69. Model 16LS Stereo Integrated Tube Amplifier
  70. hum on pre-amp when volume is turned up
  71. 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
  72. Interesting circuit, filter question.
  73. Choke Voltage ratings
  74. Major amp circuit redesign- need some expert advice
  75. Daft Hybrid Amp
  76. 6n18-v tube amp
  77. Old big/long plate 12AX7's & 12AT7's
  78. in progress
  79. A good tube amplifier power supply
  80. Anyone compared electra-print SE:PP interstages to electra-print PSA-2 autoformers
  81. El34 Se
  82. Question on choke
  83. Looking for beter EL34/6CA7 tubes for C-J MV55 amp
  84. SET tube replacement
  85. VALVOLOZZO triode amp with toroids output trafo...help me
  86. Old amp kit making noise and its getting OLD.
  87. Another Tube pre query !
  88. do 6h30 glow at the top only
  89. canadian source for triad choke?
  90. Fork vs. Sleeve Terminal Octal Sockets.
  91. Step down grid choke vs. interstage transformer
  92. Who knows James 6123HS parameters? Or where to ask
  93. Advantage of a FET-BJT CCS vs BJT only
  94. Trouble choke loading tube in regulated supply
  95. Fixed Bias adjustment
  96. web resource for tube pricing?
  97. Need help on Kenwood KR 7070
  98. 110v or 220v, how can you tell?
  99. Tubes Down Under...
  100. To anyone using 808s
  101. Grounded power supply cord on a transformerless amp ?
  102. PP KT88 Mono blocks?
  103. Looking for 6.3V 1A ccs heater supply for dht
  104. testing for the ratios on old opt's
  105. Any Transformer Winders?
  106. Output trans plate load question 5687 vs 5965
  107. KT88 triode strapped question
  108. 6528/8080 Triode - NOS Only ???
  109. Opinions gratefully recieved.
  110. Wiring Power Transformer in Parallel
  111. Is there a best location for a volume control?
  112. Help on EL84 / ecc83 SE project -very low volume
  113. 4E27 Triode connection SPICE model
  114. 300B driving 845
  115. Breaking in your tubes?
  116. 6SN7 equivalents in B9A
  117. Figuring out how many watts I need
  118. How do I tell whether a different replacement output transformer will be ok?
  119. OPT linestage question
  120. 6AS7 preamp buffer
  121. 5u4g input capacitor
  122. Chassis metal advantages/disadvantages?
  123. Experience please: Tung-Sol 6L6GC STR
  124. Transformer winding resistances
  125. Oh my where to begin!? PTP related question.
  126. tube bayonet pin gone.
  127. Attn: Glass_painter - Pioneer SM-83 Transformers Dissected
  128. Please help ID this DIY tube monoblocks
  129. Amp thinks it's a receiver ??
  130. Anyone remember heathkit s99?
  131. Renovation of fifty years old tube amplifier
  132. Big Boss: a simple and basic el84 PP amp in progress
  133. Line Stage for Mikael SE KT88
  134. Philips EL3536
  135. Counterpoint SA-5000 P.S.U part identification needed
  136. 6GU7 in an Aikido?
  137. suggest about 9002/vt202 preamp please
  138. 7591a Alternatives
  139. tube rectifier plug in s-s replacement
  140. Oscillation in tube amps
  141. 6GT5 audio amp?
  142. Pin numbering, viewed from bottom or top?
  143. The Hybrid Class A amplifier
  144. 485V Regulated Power Supply
  145. 0B3 Glows Orange
  146. New Reissue tubes...Good/Bad???
  147. PP amp design , your thoughts please.
  148. Aikido + Phono section preamp
  149. Newcomb el84 amp
  150. Any Australians want to share shipping for valves from ESRC?
  151. 5718 Nuvistor ?
  152. Pentode Miller Capacitance, and which spec value to use?
  153. Brother can you spare a preamp design?
  154. Russian tube equivelants
  155. Another question about russian tubes
  156. Why match tubes?
  157. My XPP OTL Headphoneamp
  158. Simple heater question
  159. Need small SET transformer (12B4)
  160. Red Hot 6L6GC
  161. How do these curves look?
  162. Why does lowering screen voltage reduce headroom?
  163. Class A2 Direct MOSFET Coupled SE
  164. Best tubes for ~100w 1.9k p-p?
  165. Installing bleeding resistors
  166. RH84 finish!
  167. cathode biasing question
  168. Modding an old tube amp???
  169. Rectifier swap out?
  170. Please comment my F2a SE schematic
  171. E80CC aikido
  172. Heater wiring help!
  173. Differential output stage: cap voltage?
  174. 6C41C in a PSU regulator?
  175. Filament Wiring - Shielded vs. Twisted?
  176. Transformer reflected impedance games? Overspec'd output power?
  177. SE 6V6 cathode resistor value
  178. Very strange gremlins in my phono PS
  179. which kit to build - first kit ever
  180. Does anyone know the plate reistance of a 6CW7/ECC84
  181. Shindo Claret
  182. se, srpp, pcb design criteria
  183. Looks like a promising SE build ??
  184. Apologies to Alex Kitic- RH84 Three Channel?
  185. 6L6 AB1 Push-Pull
  186. Jadis JA-30
  187. Black Gate "snubbing"
  188. New Schematic - PP UL 6V6-types, CCS-fed
  189. build up a new line amp
  190. How do you make a DHT amp REALLY HUM FREE????
  191. Experience with AnTek OPTs?
  192. 6V6 PP AB1 circuit
  193. Help with powering down a trafo
  194. Physical orientation of transformers
  195. Which EL34 tubes for Hi Fi
  196. Choke input power supply, capacitor ratings
  197. EL36/6CM5 SE design critique
  198. New 6F6 Amplifier Project
  199. Transformerless Tube Amp
  200. GE sealants: which to use?
  201. Bias supply and grid current
  202. US Army Russian Electronics Dictionary
  203. Speaker Pop!
  204. Steve Bench RIAA preamp users
  205. Using James JS-6123HS with EL84 SE is overkilled?
  206. s5electronics 16ls schematic
  207. New to valve amps - given a 'project'
  208. Are there any loctal PC sockets?
  209. cheap and easy tube preamp
  210. Stereo bass problem
  211. SRS-360 East German transmitting tubes
  212. What the heck does a getter do ?
  213. Capacitor polarization help!
  214. MasterSound Tube Amplifier
  215. PC900 / EC900 curves
  216. 2x 12AX7 preamp fuse value
  217. Crackling Noise in Tube Amp (only) & PC Sound Card
  218. The Mullard 3-3
  219. Audio Research D125 Schematic?
  220. Glass B1. Need advise
  221. Computing or measuring anode curves w/ CFB
  222. Northlake PT ??
  223. Greatest circuit ever (or weirdest)
  224. Advise for nervous EL84 user
  225. K-12G problems
  226. Changing AC heaters to DC
  227. Phase change when adding gain stage?
  228. XiangSheng Amplifier
  229. Grid stopper resistor for 12B4A?
  230. Lundahl LL1620 SE-OPT : Ultra linear ?
  231. Thordarson transformers
  232. Electra Print & SAC ( Silk )?
  233. Audio Transformer articles I would like copies of !
  234. K-12 with headphones?
  235. cap wire lead covers
  236. Single ended amp, EL34, KT88 ideas??
  237. Wavebourn Pyramid - VII driver stage
  238. Mysterious OPT winding tap
  239. DHT…. Get rid of the Hum Pot!
  240. Operating Amp Without Load
  241. Looking for information on old thread
  242. Tube Leveling Amplifier
  243. Anyone with knowledge of the 12b4?
  244. 7695...useful audio tube??
  245. PSUD - How do interpret the results?
  246. Solder station
  247. preamp for pl504 amp
  248. Resistor after volume pot
  249. 6021 Amp project..looking for some input
  250. 807 SE project started....

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