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  1. EL84 ECC83 SE Amp schematic
  2. high B+ voltage drop
  3. Volume control chip
  4. Faylon P200 rebuild
  5. Signal Ground
  6. New to 6DJ8 tube
  7. EL91 Max ratings ? help
  8. I need a distraction!
  9. 300B amp project
  10. "bevois valley" in triode
  11. Strange problem wit a 3 tube preamplifier
  12. JJ Tesla vs. Electro Harmonix for Hi-Fi EL84 SE?
  13. This Tube CB make
  14. tubecad el84 powersupply ps4 question
  15. ART Tube MP studio V3 problems
  16. Calculating Cathode Bias w/o tube curves?
  17. Cathode follower PA Driver in a cathode biased amp
  18. I have my first Valve Amp, help me not blow it up!
  19. Unison Research SR-1 schematic/service manual
  20. Mega Tube DIY project
  21. very very simple single ended 300b valve amp schematic?
  22. 300b with single stage driver, c3m or?
  23. Cap upgrade for SVP RIAA stage
  24. Quick Q about JC's upside down front end.
  25. Bogen beasts again
  26. I thought this was a joke...but..
  27. Black pollution
  28. Difference between 6N1P and 6N23P?
  29. low voltage AC umbilical advice
  30. RCA MI-4288J Amplifier - Any info?
  31. 3.5k OPT for 45 type tube?
  32. DIY/OOTB upgrade? PP/SE?
  33. Sansui AU70
  34. Moody 496 Schematic Wanted
  35. Center-tapped Plate Choke vs. OPT for PP plate loads
  36. Help sourcing some resistors with very special values for a project
  37. Power Transformer Rating?
  38. KT120 x 4 / 240W Push Pull TUBE AMP MONOBLOCKS
  39. How Much Wiring??
  40. Schematic request for Meixing Mingda MC-211
  41. 300B SE with an interstage
  42. 211/845 tubes in a 805 based amp ?
  43. Grid leak bias, how does it work?
  44. Melos Sha Gold Reference
  45. Tube Amp for MTM
  46. Dynaco ST-70 Series III
  47. #27 + 6N8S Mu-Follower: Vhk Max Question
  48. Tube Mic preamp with compressor - any ideas?
  49. Counterpoint Sa-5000 and Klimo Kent - needed service manuals
  50. Drawing loadline using interstage / choosing interstage
  51. My New Iron for Single Ended 2a3
  52. GU-50 push pull amplifier
  53. 12SL7GT vs 12SN7GT
  54. DIY power amp and speakers
  55. KT88 SE
  56. Building a 6bq5 set amp
  57. OPT DC question
  58. Suitable speakers for a Leak Stereo 20
  59. Need advice on tube record player power jack.
  60. 12a_7 or 6SN7 phono preamp suggestions
  61. ECC99 as input stage for 300B?
  62. Drawbacks to over-speccing filament trannies?
  63. Thoughts on Western Electric amp redesign
  64. Adding choke to a power supply
  65. Broskie unbalancer and Aikido Help
  66. Mounting output tran and filter choke together
  67. Capacitors for tube amp rebuild
  68. Diving in, few questions
  69. SET Current Drop- Lack of Power, Saturation or Headroom?
  70. Power tubes: which is the maximum wire lenght for the cathode resistor to ground?
  71. Center Tapped Mains Transformer as Parafeed Plate Choke
  72. A tube newbie's review of the VTA ST-120
  73. Help Identifying Ebay Finds
  74. Led biasing or fixed biasing?
  75. diy vt-52 pushpull AMP
  76. Aikido Cathode Follower HUM Problem
  77. Superhet set HMV 438 Schematic help pls
  78. Output transformer for 100Hz and up
  79. Output transformers in series to simulate center-tap for push pull
  80. LED Biasing
  81. assembling a LITE LS-69 Hybrid Balance pre-amp
  82. Question about hifi power stage design
  83. Help with Magnavox EL84 Console restore
  84. Triode Loadline Simulator for dummies tutorial?
  85. Stromberg Carlson AP-54 schematic LTSPICE
  86. Resistor in series with S.E. O.T. ?
  87. Audio Valve Eklipse volume pot value?
  88. jensen vs mundorf
  89. 47 driving 300B questions
  90. 6T9 Amp
  91. Eico HF-32 PEC Loudness Circuit
  92. MV-100B tubes running extremely hot
  93. PCL 86 parafeed?
  94. Hammond 370FX
  95. Question about tube in Little Bear P8 - 6N5P
  96. Mini Pentode tube testing in Triode mode?
  97. Sencore Pr57 Iso Trans, Power Conditioner for amp?
  98. Is hot bias really sonic preferable versus cold bias ?
  99. Aikido Problem - B+ dropping too much
  100. Klemt Echolette M40 Schematic
  101. My S.E.T remade again - the DOS
  102. I need help to recognize these two vacuum tubes
  103. found a box...
  104. Advice on triode connecting a 'JZ6 tube
  105. Beard P100 pcb disassembly
  106. LM317 Heater 12ax7 ...not working
  107. 2A3 se amp power consumption
  108. "JJ" Tubes Vs other brands
  109. playing tube amps through a generator
  110. Need help with a preamp board I bought on eBay
  111. Question on Tube Rectifier..help please.
  112. 2A3 Hum Problems in SE (Please Help!)
  113. 240v to 110v for Sun Valley JB-300B
  114. Tubelab SPP Schematic
  115. SE output transformer
  116. single-ended.com annoyance
  117. A cheapo decent splitter
  118. Lightbulb Base Failure
  119. Madison Fielding Rcvr -- Filament Trick
  120. Converting from UL to Triode: Is this correct?
  121. white follower for driving mosfets.
  122. Distance between two audio input valves
  123. Series Caps on Power Supply
  124. Most expensive parts in DIY tube amp
  125. Filter Choke Selection
  126. 6072A as DAC outputstage
  127. adapting line level to suitcase record player
  128. Aikido Noval Stereo Questions
  129. 100K 2CH Volume pot recommendation
  130. Another Daft Idea
  131. Allen Model 75 user feedback needed
  132. My perfect 6550 PP amp :)
  133. Marantz 8b power transformer - open winding
  134. Chassis Grounding/ Comment on Chinese Schematic SRK-09
  135. Mini Carver Silver Seven?
  136. Using EL34 for allen wright's pp-2c
  137. Ampex 6973 mono blocks
  138. Antique Sound Lab AQ 2001 preamp issues
  139. Quad II hums
  140. Musical Fidelity XCAN V1
  141. Cathode Follower high power class B grid driver
  142. McIntosh MC 60 bias/voltage problem
  143. how to add a sub amp in parallel to S5-12G tube amplifier
  144. 5U4GB (rectifier) Arcing - What to think?
  145. I found these ripped pieces of paper..
  146. chassis grounding questions
  147. motorola ecl82 3 channel amp?
  148. Parallel Push Pull Circuit?
  149. Older valve amps chassis grounding
  150. Just about settled on building my first amp.
  151. 6L6 Triode AB Push/Pull Pout
  152. Schade and CFB exactly equivalent
  153. need some advice on updating this one
  154. Abdellah KT88 cathode follower addition?
  155. Where to buy vacuum tubes in Hong Kong city?
  156. Help needed on restoring a Bogen AP-200 amp
  157. homemade case for a homemade amplifier
  158. Two driver options for 300B push pull
  159. Heath Williamson type W-3M
  160. 6n3c 12ax7 amplifier
  161. HELP needed to design/build DRD 6C33C SET
  162. k12g left channel is out
  163. Yaqin MC-100B... anyone modded for tape loop?
  164. Simple Se build, Which tube?
  165. Re-thinking Hybrid!
  166. History of RIAA standards
  167. GU48/833A medium power SET
  168. Bass control causing hum + no bass from left channel
  169. bad PX4? dark blue glow
  170. Soft Start/bucking transformer For Marantz 9 Monoblocks
  171. Direct coupling with CCS
  172. 407A/B Preamp
  173. Bad 845 tube? (video link)
  174. Blues Jr. Mods
  175. Dynaco PAS 4
  176. OTL Amplifier in 1990 Glass Audio Magazine
  177. Volume drop when playing and hiss noise at turning off from one channel
  178. OPT in or near loudspeaker?
  179. Soft start for tube amplifier
  180. Transformer Sizing, etc
  181. 4P1L filament oscillation
  182. Toroidal power transformers in a tube amp
  183. No left channel output
  184. Conrar Johnson PV-10 squeal!
  185. Need expert help on EL34 SE tube amplifier.
  186. Coupling Caps
  187. 12pin/compactron tube socket
  188. Aikido audio problem w/ mains voltage fluctuations
  189. Radford STA-12
  190. New popping sound from my amp
  191. Line stage experiments with 6sn7
  192. simple SE headphone amp
  193. Aesthetix Metis Linestage
  194. Problem with Antique Sounds Pre Amp
  195. Output coupling capacitor question
  196. Screen Voltage present without B+
  197. jolida jd3000b preamp
  198. Need help on output transformer wiring alternatives
  199. Hi-End Push-Pull universal driver
  200. schematic for pentode 42 SE
  201. 6L6 / EL34 / EL84 / 6V6 frequency response curves?
  202. cheap and dirty supply
  203. EL84 SET red plating problem
  204. Using Aikido Topology to make Phono Preamp and Power Supply
  205. 5687 & OB2 as an excellent HT regulator
  206. 6S45P-E questions
  207. Extreme hybrid, a 100W with the vacuum tube sound
  208. Test Settings for a EL33/6AG6/6M6 on Eico 628 tester
  209. Chinook (Baby Amp II)
  210. Einstein Amplifier Input and Driver Section
  211. Tube System for Symphony/Jazz
  212. What is the purpose of C3 & C4?
  213. Yes, I'm the one who bought it...
  214. Capacitor Values
  215. Parks Audio / Triode ST35 kit?
  216. noob question.
  217. First stereo amp "Newbie" questions
  218. Newbie tries to design an amp
  219. Help - analysis on an output KT88 PP amp
  220. 12T10 triode connection - similar "real" triode to compare to?
  221. Recommendations for tube preamp (vinyl playback)
  222. Magnavox 8802 refurb boutique or standard parts.
  223. Allen model 75 organ amplifiers modifications
  224. Capacitance of rectifier tubes/valves near V=0??
  225. Volume/selector switch
  226. Auto Bias w/ LM317
  227. Volume drops and then comes back - anyone recognizes the sympthom?
  228. Cathode Follower and Volume Pot
  229. Dyna Mark III monoblocks. Driver boards and some questions on modding.
  230. switching a 5y3 for a 5y4?
  231. K-12M in Ultra Linear Mode Volume Issue
  232. SA 260 Pilot tube amplifier
  233. Standard Earmax Mod
  234. 470V using Bridge vs. 230V using Doubler
  235. Troublesome hybrid shengya a10..
  236. Heater Dropping Resistors
  237. Useing Mosfet in cathode leg of phase splitter
  238. Cheap (<100) Digital Tube Tester from ebay; experience/build/mod thread
  239. Cleaning old tube sockets with common household products
  240. Automatic Bias Kit
  241. Triode mode Pentode G2 resistor?
  242. Rectifier.
  243. Tube gainstage for newbie
  244. Source follower irf720 or DN2540
  245. Toroidal OPT
  246. Tesla E83CC - Have done research & still havingt trouble spotting fakes from real
  247. Can Capacitor
  248. SE Power amp SG2 voltage
  249. Bias supply
  250. 7377 tube socket

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