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  1. balance pots in Williamson driver stage
  2. Another Question on Tektronix Transformers
  3. Philco K1629 Upgrade Options
  4. My return to tubes, via headphones - what circuit would you recommend?
  5. High Quality EL84 UL SE Amplifier
  6. regulated supply to CCS plate load
  7. Twin Audio Sinfonia Preamp
  8. ecll800 schematic confusion
  9. 6L6 recommendations
  10. tube 100th
  11. Luxman OY15-5k OPT?
  12. Has anyone had experience with Russian 5C8S and 5C9S?
  13. New Here looking for info on rare SVIKO russian made 6KG6 monoblocks
  14. DC-DC converters
  15. EL 84 pp amp - simple regulated circuit sought
  16. Any tube amp to drive B&W 802D?
  17. New to valve amplifiers
  18. SE 6GW8 output transformer with 5 wires.
  19. Mr.Curwen's single ended adventures
  20. Tube magic eye with em84-sensitivity?!
  21. Tube test
  22. Brimar 6V6 USSR
  23. Construction Guides
  24. World Design KT88 Kit
  25. Opinions appreciated: Lafayette LA 224b vs. McIntosh 225
  26. Clone X10D problems distortion / saturation ... help!
  27. 12DW7 or 12AU7+12AX7 if stereo?
  28. First preamp and gain control
  29. Tube life..
  30. Berman 76 preamplifier, I need some advice please
  31. How to light GM70 tube as decorative?
  32. Old Tube amp missing tubes. HELP
  33. Going to Berlin, looking for electronics diy shops
  34. 6SJ7 Vs 6Ж8 - Can the russian tube be considered an equivalent tube ?
  35. 6L6G Tung-Sol reissue: sweet sound and delicious night sight, but...
  36. Help with Eico ST70
  37. Class-D and Tube buffer/preamp off same 12V SLA?
  38. Hard time to find High Voltage medium power linear BJT
  39. Gu50 or 1624 PP amp first trials
  40. cathode follower driver A2
  41. High Pass Filter for OTL headphone Amp
  42. Bewitch 6550 Balance Issue
  43. ground hum issues in an old peak st-100
  44. Need an APPJ PA0901A Mini Amp Output Transformer.
  45. VTL Tiny Triode Schematics?
  46. A question of dynamics: Amplifier design?
  47. Rechargeable battery for cathode bias: open discussion
  48. High quality tube socket for 4P1L tube ?
  49. VTL Schematic needed
  50. Diode rating for filament voltage doubler
  51. SE vs PP for SET amps
  52. Use "mu output" from depletion mode MOSFET load?
  53. GM70 SE mov rectifiers
  54. First Preamp build
  55. Fisher KX-200 driving a pair of ESL from the plates
  56. Disadvantages of unbalanced tube
  57. The anatomy of a vacuum toob
  58. Valve Amplification Company CLA1 mkii help
  59. leak stereo 20 channel imbalance
  60. Mains powered 20W submin bridge amp
  61. SS rectification ST70
  62. K-12g ultra fast diode mod UF4007
  63. WE46c..
  64. 10 Pin B10A socket
  65. RIAA network adjustment
  66. audio research sp16
  67. Visiting Japan
  68. "up-rating" power filter chokes
  69. Differential pair gain/ where to apply feedback
  70. EL84 ECC83 SE Amp schematic
  71. high B+ voltage drop
  72. Volume control chip
  73. Faylon P200 rebuild
  74. Signal Ground
  75. New to 6DJ8 tube
  76. EL91 Max ratings ? help
  77. I need a distraction!
  78. 300B amp project
  79. "bevois valley" in triode
  80. Strange problem wit a 3 tube preamplifier
  81. JJ Tesla vs. Electro Harmonix for Hi-Fi EL84 SE?
  82. This Tube CB make
  83. tubecad el84 powersupply ps4 question
  84. ART Tube MP studio V3 problems
  85. Calculating Cathode Bias w/o tube curves?
  86. Cathode follower PA Driver in a cathode biased amp
  87. I have my first Valve Amp, help me not blow it up!
  88. Unison Research SR-1 schematic/service manual
  89. Mega Tube DIY project
  90. very very simple single ended 300b valve amp schematic?
  91. 300b with single stage driver, c3m or?
  92. Cap upgrade for SVP RIAA stage
  93. Quick Q about JC's upside down front end.
  94. Bogen beasts again
  95. I thought this was a joke...but..
  96. Black pollution
  97. Difference between 6N1P and 6N23P?
  98. low voltage AC umbilical advice
  99. RCA MI-4288J Amplifier - Any info?
  100. 3.5k OPT for 45 type tube?
  101. DIY/OOTB upgrade? PP/SE?
  102. Sansui AU70
  103. Moody 496 Schematic Wanted
  104. Center-tapped Plate Choke vs. OPT for PP plate loads
  105. Help sourcing some resistors with very special values for a project
  106. Power Transformer Rating?
  107. KT120 x 4 / 240W Push Pull TUBE AMP MONOBLOCKS
  108. How Much Wiring??
  109. Schematic request for Meixing Mingda MC-211
  110. 300B SE with an interstage
  111. 211/845 tubes in a 805 based amp ?
  112. Grid leak bias, how does it work?
  113. Melos Sha Gold Reference
  114. Tube Amp for MTM
  115. Dynaco ST-70 Series III
  116. #27 + 6N8S Mu-Follower: Vhk Max Question
  117. Tube Mic preamp with compressor - any ideas?
  118. Counterpoint Sa-5000 and Klimo Kent - needed service manuals
  119. Drawing loadline using interstage / choosing interstage
  120. My New Iron for Single Ended 2a3
  121. GU-50 push pull amplifier
  122. 12SL7GT vs 12SN7GT
  123. DIY power amp and speakers
  124. KT88 SE
  125. Building a 6bq5 set amp
  126. OPT DC question
  127. Suitable speakers for a Leak Stereo 20
  128. Need advice on tube record player power jack.
  129. 12a_7 or 6SN7 phono preamp suggestions
  130. ECC99 as input stage for 300B?
  131. Drawbacks to over-speccing filament trannies?
  132. Thoughts on Western Electric amp redesign
  133. Adding choke to a power supply
  134. Broskie unbalancer and Aikido Help
  135. Mounting output tran and filter choke together
  136. Capacitors for tube amp rebuild
  137. Diving in, few questions
  138. SET Current Drop- Lack of Power, Saturation or Headroom?
  139. Power tubes: which is the maximum wire lenght for the cathode resistor to ground?
  140. Center Tapped Mains Transformer as Parafeed Plate Choke
  141. A tube newbie's review of the VTA ST-120
  142. Help Identifying Ebay Finds
  143. Led biasing or fixed biasing?
  144. diy vt-52 pushpull AMP
  145. Aikido Cathode Follower HUM Problem
  146. Superhet set HMV 438 Schematic help pls
  147. Output transformer for 100Hz and up
  148. Output transformers in series to simulate center-tap for push pull
  149. LED Biasing
  150. assembling a LITE LS-69 Hybrid Balance pre-amp
  151. Question about hifi power stage design
  152. Help with Magnavox EL84 Console restore
  153. Triode Loadline Simulator for dummies tutorial?
  154. Stromberg Carlson AP-54 schematic LTSPICE
  155. Resistor in series with S.E. O.T. ?
  156. Audio Valve Eklipse volume pot value?
  157. jensen vs mundorf
  158. 47 driving 300B questions
  159. 6T9 Amp
  160. Eico HF-32 PEC Loudness Circuit
  161. MV-100B tubes running extremely hot
  162. PCL 86 parafeed?
  163. Hammond 370FX
  164. Question about tube in Little Bear P8 - 6N5P
  165. Mini Pentode tube testing in Triode mode?
  166. Sencore Pr57 Iso Trans, Power Conditioner for amp?
  167. Is hot bias really sonic preferable versus cold bias ?
  168. Aikido Problem - B+ dropping too much
  169. Klemt Echolette M40 Schematic
  170. My S.E.T remade again - the DOS
  171. I need help to recognize these two vacuum tubes
  172. found a box...
  173. Advice on triode connecting a 'JZ6 tube
  174. Beard P100 pcb disassembly
  175. LM317 Heater 12ax7 ...not working
  176. 2A3 se amp power consumption
  177. "JJ" Tubes Vs other brands
  178. playing tube amps through a generator
  179. Need help with a preamp board I bought on eBay
  180. Question on Tube Rectifier..help please.
  181. 2A3 Hum Problems in SE (Please Help!)
  182. 240v to 110v for Sun Valley JB-300B
  183. Tubelab SPP Schematic
  184. SE output transformer
  185. single-ended.com annoyance
  186. A cheapo decent splitter
  187. Lightbulb Base Failure
  188. Madison Fielding Rcvr -- Filament Trick
  189. Converting from UL to Triode: Is this correct?
  190. white follower for driving mosfets.
  191. Distance between two audio input valves
  192. Series Caps on Power Supply
  193. Most expensive parts in DIY tube amp
  194. Filter Choke Selection
  195. 6072A as DAC outputstage
  196. adapting line level to suitcase record player
  197. Aikido Noval Stereo Questions
  198. 100K 2CH Volume pot recommendation
  199. Another Daft Idea
  200. Allen Model 75 user feedback needed
  201. My perfect 6550 PP amp :)
  202. Marantz 8b power transformer - open winding
  203. Chassis Grounding/ Comment on Chinese Schematic SRK-09
  204. Mini Carver Silver Seven?
  205. Using EL34 for allen wright's pp-2c
  206. Ampex 6973 mono blocks
  207. Antique Sound Lab AQ 2001 preamp issues
  208. Quad II hums
  209. Musical Fidelity XCAN V1
  210. Cathode Follower high power class B grid driver
  211. McIntosh MC 60 bias/voltage problem
  212. how to add a sub amp in parallel to S5-12G tube amplifier
  213. 5U4GB (rectifier) Arcing - What to think?
  214. I found these ripped pieces of paper..
  215. chassis grounding questions
  216. motorola ecl82 3 channel amp?
  217. Parallel Push Pull Circuit?
  218. Older valve amps chassis grounding
  219. Just about settled on building my first amp.
  220. 6L6 Triode AB Push/Pull Pout
  221. Schade and CFB exactly equivalent
  222. need some advice on updating this one
  223. Abdellah KT88 cathode follower addition?
  224. Where to buy vacuum tubes in Hong Kong city?
  225. Help needed on restoring a Bogen AP-200 amp
  226. homemade case for a homemade amplifier
  227. Two driver options for 300B push pull
  228. Heath Williamson type W-3M
  229. 6n3c 12ax7 amplifier
  230. HELP needed to design/build DRD 6C33C SET
  231. k12g left channel is out
  232. Yaqin MC-100B... anyone modded for tape loop?
  233. Simple Se build, Which tube?
  234. Re-thinking Hybrid!
  235. History of RIAA standards
  236. GU48/833A medium power SET
  237. Bass control causing hum + no bass from left channel
  238. bad PX4? dark blue glow
  239. Soft Start/bucking transformer For Marantz 9 Monoblocks
  240. Direct coupling with CCS
  241. 407A/B Preamp
  242. Bad 845 tube? (video link)
  243. Blues Jr. Mods
  244. Dynaco PAS 4
  245. OTL Amplifier in 1990 Glass Audio Magazine
  246. Volume drop when playing and hiss noise at turning off from one channel
  247. OPT in or near loudspeaker?
  248. Soft start for tube amplifier
  249. Transformer Sizing, etc
  250. 4P1L filament oscillation

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