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

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