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  1. beginner: which DIY kit will go well with these drivers?
  2. Xindak MT-3
  3. Loudness controls
  4. Advice on replacing Yaqin MC-10L
  5. Converting Eico HF-81 to a simple PP EL84 (pics incl.)
  6. 12at7 dc coupled to 12at7 cathodyne to drive EL34
  7. First Tube Help
  8. ampex 6793 stereo
  9. RCA Victrola 8V91
  10. what to do with these tubes? (6AQ5/6AR5)
  11. Sylvania 45C14M advice
  12. Re-designing 6DJ8 circuit for the 6CG7
  13. Hi fi kits
  14. bias capacitor
  15. Question re: Signal Ground versus HT ground
  16. Schematic to a friend
  17. Newbie question about transformers
  18. Request for suggestions. Akai M8 mono amp schematic validation.
  19. Rectifier
  20. Source for transformer parts?
  21. odd order harmonic squelching?
  22. Best Current Production 6550 / KT88
  23. Wharfedale W12 output transformers
  24. Are we committing suicide?! (Asbestos in vaccum tube base)
  25. Help me to Identify this Tube
  26. GU50 socket blues
  27. New 18W build el84/12ax7
  28. Why a follower in a parafeed triodeamp?
  29. Heads up for Australian tube amp diyers
  30. build new amp from 2 vintage tube amps?
  31. Sansui AU-111 rebuild and need some help
  32. Interstage/Input Transformer
  33. VALVEKING ROYAL8 with 6p14p-EV
  34. Ergo Ella PP Amplifier Wiring
  35. 6DX8/ECL84/6F3P Baby Huey
  36. Old tube amp info?
  37. MEIXING MING DA MC 2006 Phonostage schematics
  38. Problem with a Peavey Classic 50
  39. Just what the world needs - another EL84 amp
  40. Help me pick el34b tubes
  41. heathkit SA2
  42. Need help on RIAA
  43. GU50 plate curves
  44. What tube is this?
  45. Help with GZ34
  46. Need help in modifying Roberts 770 monoblocks
  47. PP and PPP
  48. ECL82 Single Tube Amp
  49. circuit idea
  50. Need Telefunken Hymnus 5438 Dial Glass
  51. Bias probes/Am I getting true readings
  52. How to measure output power
  53. Oddblock Wooden Case
  54. Amplifier Quandary
  55. Fuse blows instantly
  56. Looking for a fairly simple Hi gain tube pre amp project
  57. Best 2a3 PP OPT.
  58. Sharing cathode resistor and capacitor
  59. Power tubes in cascode for output section?
  60. good tube service tech in Los Angeles?
  61. Proposal for a new sticky thread
  62. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  63. PCF what?
  64. stupid question about heater wire to ground
  65. OTL All American Five? (or Ten)
  66. Scored a very nice H H Scott 272!
  67. Simple DIY Stereo Tube Amp with around 20W
  68. Maton Amp
  69. New Tech
  70. LS8 pre kit as an output stage for DAC?
  71. Japanese Valves
  72. B+ delay for DHT amp
  73. QQV03-20A/CV2799
  74. 0,22 0,33 0,47.....uF
  75. Most powerful SE DIY design?
  76. 420vdc supply for a tube amp
  77. PSE 2a3 operating points?
  78. Ju-Jutsu: The Ultimate Monoblock
  79. Looking for Phono Stage ...
  80. Finished my Fisher 460t-thanks
  81. Datasheet Cpk values
  82. Eico635 tester
  83. 6p3s...
  84. Help with Amp Salvage
  85. 808 SE Build
  86. how to bias my rebuilt dynaco st 70
  87. Want help - RCA Tube Manual RIAA Phono Stage
  88. Tube Pre-amp for both CD and Phono inputs
  89. Cascode Driver Oscillation
  90. 872b or 6gj5a for a homebrew bass amp
  91. how does it sound and perform?
  92. Bootstrapped long tail
  93. Thorens TEM 3200 clone
  94. Identifying this RCA Transformer
  95. Tube burning
  96. Add Standby Directly after Rectifier, or After First Filter Stage?
  97. Help with some tube ID
  98. CCS power amp bias
  99. this is EL34 tube of what model?
  100. Looking for constructive criticism on my first design
  101. Audio note kit 1 vs Meishu
  102. Tube Amp Gain V.S. RF Gain
  103. Kool-mu material for building audio transformer
  104. Buzz/Hum in Matrix amplifier
  105. Optimation PA-250AC Lab-Grade Audio Amplifier
  106. RS1003 in SE triode-UL monoblocks
  107. Bypass capacitors in Tube amps
  108. Basic question re: gNFB around 3 stages
  109. James PP Audio Transformers, any good?
  110. Seeking advice for tube amp kit on,seems to be, chinese site
  111. Tube pricing from 1981
  112. 6e5p WCF headphone amp with no cap!
  113. "How it's made" vacuum tubes..
  114. Citation I and IV phono schematic query
  115. GS-4V High-mu russian triode for RIAA preamp
  116. good source for amp chassis in europe?
  117. Help identify and replacement of ? resistor
  118. New tube amp diy kit required power?
  119. Decoupling DC heater supply between valves..benefit?
  120. The Aikido Comedy: Straight Talk
  121. Recapping tube preamp questions
  122. A tube amp that's actually a tesla coil.
  123. Tube "Orientation"
  124. 18 watt tremolo vvr
  125. Pre amp output, would this work?
  126. Aikido Power Amp.....Possible??
  127. 12AX7 questions
  128. 6550 PUSH-PULL
  129. CCS at plate? Unknown schematic part
  130. Most odd grid choke behaviour.
  131. Spec for Altec TP-404 Transformer
  132. why do wimpy drivers for 2A3 work as well as they do?
  133. Seeking advice on Tube buffer / pre-amp
  134. 8x Push-pull KT88 class A in triode mode
  135. Tube Pre dull into Tube Amp - cause ?
  136. FINALLY I can start building my GM70
  137. Russian triodes ГИ-15Б arriving in a few days
  138. Cap or resistor
  139. KT88/PP driver confusion
  140. Simple SE GU-50
  141. Darling 1626
  142. 01a DHT Preamp
  143. Suitable tubes for Gomes output
  144. phono line stage project
  145. Whats wrong with this circuit?
  146. Any Newcomb Gurus.?
  147. Preamp Tube MU Level?
  148. SRPP Paraccordion topology ?
  149. Replacing 6922 with 6FQ7 in Conrad Johnson ET3 preamp
  150. Modification of a Chinese KT90 PP amplifier
  151. Tricky Headphone Amp design for AK4396
  152. How to know voltage bias adjustmentwith this data?
  153. Strange Stability Enhancement Trick
  154. has anyone bought tubes from http://www.tangotubes.com/
  155. “Earmax / G3 / Morgan Jones / Cavalli” Headphone Amp Reissue with 6SN7 Steroids
  156. Ever heard of British transofmer company "Ro"?
  157. A friend gave me some random tubes...
  158. Replacement for 6e2 without vu
  159. PP GU50 triode strapped project
  160. Tube VAS stage questions???
  161. OT impedance help: 9.8 vs 8k
  162. popping & crackling noise from restored valve AM radio
  163. Choosing 6550 PP Output Transformer
  164. Reversing Interstage Transformer
  165. Aikido 9 pin All in One Build
  166. KT88 PP UL Design Help Needed
  167. Cayin A-300B schematic needed
  168. Please Recommend a Preamp!
  169. Which Antek transforms to use
  170. Integrated Amp as Preamp and Subwoofer amp
  171. Uses for 715C Pulse Tetrode
  172. PP KT-88 w/866A MV HT Supply
  173. EC88 (6DL4) NOS Mullard - any use at all?
  174. Advice sought on thermionic headphone amp
  175. Eico HF-81: Input Selector bypass
  176. 12b4 bass rolloff problem
  177. No Right ch sound on yaqin mc10l
  178. tester causing bias to rise?
  179. Heaters & Filaments: AC vs. DC
  180. Old HP power transformers... need some wiring advice!
  181. Old HP power transformers... need some wiring advice!
  182. RCA RS177H just dosen't sound right! Caps?
  183. silicon or tube rectifier in an EL34 SE
  184. Help original 300G LEGACY
  185. 813 Tube-Steak!
  186. Basic 12AU7 heatrr question
  187. Shipping a vacuum tube to China
  188. 6DJ8/ECC88-SRPP Tube Preamplifier
  189. Help needed: hum noise in Eimac 250TL driven by 75TL Single End Amplifier
  190. Found tons of Tubes,and many other parts
  191. Ampeg B15 Heritage Clone Help
  192. EZ80 Data Sheets, R-Lim and Max Cap
  193. Filament Voltages CT vs Non-CT
  194. Troubleshooting help needed
  195. What is it? Tube guessology
  196. Bass & Treble controls, or rather lack of.
  197. Quicksilver 8417 Power Supply Question
  198. Why a sudden distortion in treble of this SET amplifier?
  199. 5f1 Champ grounding
  200. Antitriode PP with EL34
  201. How to calculate Pout for Push Pull design
  202. Newbie Question - Power Transformer vs Isolation Transformer
  203. All tubes red plating
  204. Exceeding bias voltage?
  205. Vacuum State RTP Preamp Problem
  206. Alfred Morgan Tube Preamplifier
  207. 845 vs GM70
  208. Looking for project suggestions - 12au7 pre-amp?
  209. Contemporary tradition breaking amp schematics.
  210. ul - triode coupled screen grid resistor
  211. Optimum driver valve for an interstage-transformer-driven SE 300B
  212. 6C33C
  213. Soundcraftsmen 5050
  214. Tetra Phono Question
  215. WF tube
  216. Opt laminations isolation
  217. Heretical Source
  218. Broskie auto bias
  219. heater wiring - the Good the Bad and the Ugly
  220. AC Line Filter
  221. Counterpoint SA5000 Help
  222. Problem with ECC83 measurement values - please help
  223. Newbie Bias help ?
  224. AV305m AVVT
  225. Pot mechanical resistance and restoration..
  226. HMV Little Nipper mantle radio = 1 STEREO
  227. What's the simplest way to adjust filament voltage?
  228. GDAP-06
  229. Audio Note L6 - Schematic?
  230. Preventing HV flashover on socket pins
  231. Best "Vintage" Stereo Pres that SoftClip and lotsa Harmonics
  232. SE with PP OPT's?
  233. 12ax7/12AT7 Recommendations
  234. HELP: Eimac 75TL amp high frequency roll off
  235. unison reserch s8, let's build it!
  236. Where do super high end companies get their transformers?
  237. Tube Tester Panel Meter
  238. Attic find AMP
  239. Help getting Imax and Eb approximations for a push-pull amp
  240. Is this amp OK to buy, or is this a problem?
  241. Swirling Harmonics, can it be described
  242. Line stage with u-follower and nfb
  243. Newbie looking for help, pre-out to tube amp.
  244. Unison research integrated ampliphier schematics
  245. FET CCS anode load and RFI/oscillation.
  246. Old schematic
  247. Newbie Looking for Replacement OPTS Motorola Console Amp
  248. Merlyn- May AudioXpress
  249. How to clean tubes?
  250. does the 3A5 have the stones to drive a 2A3?

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