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  1. Tube Mic preamp with compressor - any ideas?
  2. Counterpoint Sa-5000 and Klimo Kent - needed service manuals
  3. Drawing loadline using interstage / choosing interstage
  4. My New Iron for Single Ended 2a3
  5. GU-50 push pull amplifier
  6. 12SL7GT vs 12SN7GT
  7. DIY power amp and speakers
  8. KT88 SE
  9. Building a 6bq5 set amp
  10. OPT DC question
  11. Suitable speakers for a Leak Stereo 20
  12. Need advice on tube record player power jack.
  13. 12a_7 or 6SN7 phono preamp suggestions
  14. ECC99 as input stage for 300B?
  15. Drawbacks to over-speccing filament trannies?
  16. Thoughts on Western Electric amp redesign
  17. Adding choke to a power supply
  18. Broskie unbalancer and Aikido Help
  19. Mounting output tran and filter choke together
  20. Capacitors for tube amp rebuild
  21. Diving in, few questions
  22. SET Current Drop- Lack of Power, Saturation or Headroom?
  23. Power tubes: which is the maximum wire lenght for the cathode resistor to ground?
  24. Center Tapped Mains Transformer as Parafeed Plate Choke
  25. A tube newbie's review of the VTA ST-120
  26. Help Identifying Ebay Finds
  27. Led biasing or fixed biasing?
  28. diy vt-52 pushpull AMP
  29. Aikido Cathode Follower HUM Problem
  30. Superhet set HMV 438 Schematic help pls
  31. Output transformer for 100Hz and up
  32. Output transformers in series to simulate center-tap for push pull
  33. LED Biasing
  34. assembling a LITE LS-69 Hybrid Balance pre-amp
  35. Question about hifi power stage design
  36. Help with Magnavox EL84 Console restore
  37. Triode Loadline Simulator for dummies tutorial?
  38. Stromberg Carlson AP-54 schematic LTSPICE
  39. Resistor in series with S.E. O.T. ?
  40. Audio Valve Eklipse volume pot value?
  41. 47 driving 300B questions
  42. 6T9 Amp
  43. Eico HF-32 PEC Loudness Circuit
  44. MV-100B tubes running extremely hot
  45. PCL 86 parafeed?
  46. Hammond 370FX
  47. Question about tube in Little Bear P8 - 6N5P
  48. Mini Pentode tube testing in Triode mode?
  49. Sencore Pr57 Iso Trans, Power Conditioner for amp?
  50. Is hot bias really sonic preferable versus cold bias ?
  51. Aikido Problem - B+ dropping too much
  52. Klemt Echolette M40 Schematic
  53. My S.E.T remade again - the DOS
  54. I need help to recognize these two vacuum tubes
  55. found a box...
  56. Advice on triode connecting a 'JZ6 tube
  57. Beard P100 pcb disassembly
  58. LM317 Heater 12ax7 ...not working
  59. 2A3 se amp power consumption
  60. "JJ" Tubes Vs other brands
  61. playing tube amps through a generator
  62. Need help with a preamp board I bought on eBay
  63. Question on Tube Rectifier..help please.
  64. 2A3 Hum Problems in SE (Please Help!)
  65. 240v to 110v for Sun Valley JB-300B
  66. SE output transformer
  67. single-ended.com annoyance
  68. A cheapo decent splitter
  69. Lightbulb Base Failure
  70. Madison Fielding Rcvr -- Filament Trick
  71. Converting from UL to Triode: Is this correct?
  72. white follower for driving mosfets.
  73. Distance between two audio input valves
  74. Series Caps on Power Supply
  75. Most expensive parts in DIY tube amp
  76. Filter Choke Selection
  77. 6072A as DAC outputstage
  78. adapting line level to suitcase record player
  79. Aikido Noval Stereo Questions
  80. 100K 2CH Volume pot recommendation
  81. Another Daft Idea
  82. Allen Model 75 user feedback needed
  83. My perfect 6550 PP amp :)
  84. Marantz 8b power transformer - open winding
  85. Chassis Grounding/ Comment on Chinese Schematic SRK-09
  86. Mini Carver Silver Seven?
  87. Using EL34 for allen wright's pp-2c
  88. Ampex 6973 mono blocks
  89. Antique Sound Lab AQ 2001 preamp issues
  90. Quad II hums
  91. Musical Fidelity XCAN V1
  92. Cathode Follower high power class B grid driver
  93. McIntosh MC 60 bias/voltage problem
  94. how to add a sub amp in parallel to S5-12G tube amplifier
  95. 5U4GB (rectifier) Arcing - What to think?
  96. I found these ripped pieces of paper..
  97. chassis grounding questions
  98. motorola ecl82 3 channel amp?
  99. Parallel Push Pull Circuit?
  100. Older valve amps chassis grounding
  101. Just about settled on building my first amp.
  102. 6L6 Triode AB Push/Pull Pout
  103. Schade and CFB exactly equivalent
  104. need some advice on updating this one
  105. Abdellah KT88 cathode follower addition?
  106. Where to buy vacuum tubes in Hong Kong city?
  107. Help needed on restoring a Bogen AP-200 amp
  108. Two driver options for 300B push pull
  109. Heath Williamson type W-3M
  110. 6n3c 12ax7 amplifier
  111. HELP needed to design/build DRD 6C33C SET
  112. k12g left channel is out
  113. Yaqin MC-100B... anyone modded for tape loop?
  114. Re-thinking Hybrid!
  115. History of RIAA standards
  116. GU48/833A medium power SET
  117. Bass control causing hum + no bass from left channel
  118. bad PX4? dark blue glow
  119. Soft Start/bucking transformer For Marantz 9 Monoblocks
  120. Direct coupling with CCS
  121. 407A/B Preamp
  122. Bad 845 tube? (video link)
  123. Dynaco PAS 4
  124. OTL Amplifier in 1990 Glass Audio Magazine
  125. Volume drop when playing and hiss noise at turning off from one channel
  126. OPT in or near loudspeaker?
  127. Soft start for tube amplifier
  128. Transformer Sizing, etc
  129. 4P1L filament oscillation
  130. Toroidal power transformers in a tube amp
  131. No left channel output
  132. Conrad Johnson PV-10 squeal!
  133. Need expert help on EL34 SE tube amplifier.
  134. 12pin/compactron tube socket
  135. Aikido audio problem w/ mains voltage fluctuations
  136. Radford STA-12
  137. New popping sound from my amp
  138. Line stage experiments with 6sn7
  139. simple SE headphone amp
  140. Aesthetix Metis Linestage
  141. Problem with Antique Sounds Pre Amp
  142. Output coupling capacitor question
  143. Screen Voltage present without B+
  144. jolida jd3000b preamp
  145. Need help on output transformer wiring alternatives
  146. Hi-End Push-Pull universal driver
  147. schematic for pentode 42 SE
  148. 6L6 / EL34 / EL84 / 6V6 frequency response curves?
  149. cheap and dirty supply
  150. EL84 SET red plating problem
  151. Using Aikido Topology to make Phono Preamp and Power Supply
  152. 5687 & OB2 as an excellent HT regulator
  153. 6S45P-E questions
  154. Extreme hybrid, a 100W with the vacuum tube sound
  155. Test Settings for a EL33/6AG6/6M6 on Eico 628 tester
  156. Chinook (Baby Amp II)
  157. Einstein Amplifier Input and Driver Section
  158. Tube System for Symphony/Jazz
  159. What is the purpose of C3 & C4?
  160. Yes, I'm the one who bought it...
  161. Capacitor Values
  162. Parks Audio / Triode ST35 kit?
  163. noob question.
  164. First stereo amp "Newbie" questions
  165. Newbie tries to design an amp
  166. Help - analysis on an output KT88 PP amp
  167. 12T10 triode connection - similar "real" triode to compare to?
  168. Recommendations for tube preamp (vinyl playback)
  169. Magnavox 8802 refurb boutique or standard parts.
  170. Allen model 75 organ amplifiers modifications
  171. Capacitance of rectifier tubes/valves near V=0??
  172. Volume/selector switch
  173. Auto Bias w/ LM317
  174. Volume drops and then comes back - anyone recognizes the sympthom?
  175. Cathode Follower and Volume Pot
  176. Dyna Mark III monoblocks. Driver boards and some questions on modding.
  177. switching a 5y3 for a 5y4?
  178. K-12M in Ultra Linear Mode Volume Issue
  179. SA 260 Pilot tube amplifier
  180. Standard Earmax Mod
  181. 470V using Bridge vs. 230V using Doubler
  182. Troublesome hybrid shengya a10..
  183. Heater Dropping Resistors
  184. Useing Mosfet in cathode leg of phase splitter
  185. Cleaning old tube sockets with common household products
  186. Automatic Bias Kit
  187. Triode mode Pentode G2 resistor?
  188. Rectifier.
  189. Tube gainstage for newbie
  190. Source follower irf720 or DN2540
  191. Toroidal OPT
  192. Tesla E83CC - Have done research & still havingt trouble spotting fakes from real
  193. SE Power amp SG2 voltage
  194. Bias supply
  195. 7377 tube socket
  196. Power Transformer Impedance Matching
  197. zenith console amplifier (a stereo mono amplifier :) )
  198. Trutone model Teeco 610-D
  199. electromagnetic hum problem
  200. Heathkit A7 Volume.
  201. Ribbon Tube Amp
  202. Brimar ECC83 with red bottom
  203. Dynaco ST 35 Cheap Transformers source in EU
  204. Transformer input for P-P
  205. Help Identifying 12au7a From Hammond Organ
  206. K502 Bleeder and LED
  207. Cathode follower attenuates signal
  208. Anyone has a curve tracer to trace Western Electric 436A 448A 418A in triode mode ?
  209. Breadboards and tube voltages
  210. Dynaco 35 Power Supply
  211. Magic eye with tube em80-schematic or circuit
  212. Using 220v amp in country with 230v
  213. Magic eye with EM81 tube - made in China
  214. Improvement Suggestion Wanted: 6AS7 Hybrid PP Amp
  215. Tube amp instability in LTSpice (Claus Byrith 4-30)
  216. Current mfg triode's
  217. K12g upgrades
  218. Help Needed Identifying a Custom Tube Amp
  219. 6dj8 6922 driver question
  220. APPJ PA0901A Repair
  221. Output tube G1 resistors question
  222. Building Mullard PP ECL86 stereo
  223. 6SN7 Parallel Preamp Anyone?
  224. Advice on Finishing my K502 Build
  225. Ferrite SE Outut XFMR for HF Tube Amp
  226. Question about grounding a 2-prong tube amp
  227. Grommes Mono Block
  228. EL84 triode mode @ 425V?
  229. Hybrid amp - Grounding Suggestions?
  230. Advises asked for, exquisite taste wanted!!
  231. need a good 2a3 socket... need advice
  232. Cathode feedback comments?
  233. Does different Rectifier Tubes change the tone????
  234. Another boring day
  235. el84 Tube amp
  236. Haddon PL151 Quad II input transformer
  237. Noob question
  238. Futterman H3 Set Up
  239. Any tube guys here use a MiniDSP
  240. Should Output Transformers be replaced
  241. Quad II questions
  242. MY OTL Tim Mellow-ESL 63 PROJECT
  243. Zobel for REDD47 w/ HA-100 Inpu
  244. Pentode P-P - cathode biasing for A and AB
  245. Why a Headphone Amp?
  246. How little B+ ripple do I really need?
  247. Need good EF86 based RIAA preamp.
  248. Which Tube amplifier should I build first?
  249. 6L6GC in Push Pull Class A - how much power out?
  250. ECC83 DC Heater Supply - without CT

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