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  1. NOS potted Chicago Transformer 1BC-150
  2. capacitor voltage for tube amp power supply
  3. 808 SE Design Help!
  4. Why can't I build my own ARC LS-5 or CJ PV-12?
  5. Post-mortem on a 80 year old 2A3 amp
  6. 6e5p gm70 with 6d22s?
  7. 6L6-6V6-EL34-KT88-6CA7-EL84
  8. Scheme for SE amp
  9. $16,000
  10. Hybrid power amp
  11. Diagnosis please
  12. BK 707 Tube Tester Mods
  13. monarch 614
  14. Separate Filament and B+ Switches
  15. Dynaco Low Power with 12AY7's
  16. PTP kits available?
  17. Which OP transformer and materials?
  18. Power of Tube Amp and Transistors Amp
  19. testing tubes
  20. current servo not voltage.
  21. Help Me, How to make Pre-amp using 12AU7 tube and Op-Amp Ic mix?
  22. 300b filament
  23. DHT SE auto bias circuit
  24. Anyone try swapping 6SN7 w/ 6F8G
  25. Eliminating Cathode Bypass Caps In SET Amplifier
  26. Nano vacuum tube
  27. Help High Line voltage
  28. Switchable Amp Output?
  29. PCB or hardwire?
  30. 27 line pre amplifier
  31. Mystery tubes on FB?
  32. amplifier discussion
  33. Mikael Abdellah KT88 SE with Cornet2
  34. 5879 to 12AX7 conversion
  35. CCDA SE output stage?
  36. Bravo V2 tube headphone amp - high pitched noise?
  37. Preamp Grounding Question
  38. SE on 300B
  39. musical paradise mp 301
  40. Newbie plan
  41. Can anybody identify this amp?
  42. Old RCA radio; can anyone ID this?
  43. Class AB2 - Kink, how and why?
  44. 6SL7, 6J5, or 6SN7 unity gain buffer amp
  45. CCDA dissimilar triode preamp
  46. NOS NEGLECTED HIGH-END AUDIO TUBE
  47. GOSS C-core suppliers in UK/Europe
  48. Old radio -> tube amplifier
  49. Sowter 8650 in SE
  50. My Russian SET
  51. Raysonic vs. DIY tube amp?
  52. Which pins to use first?
  53. Bypass gain stage on K16LS amp
  54. Schematic help for a Pilot 505 amp please
  55. Question re: Distortion in triode gain stage
  56. Newbie needs help
  57. Marantz Model 9
  58. Is my power transformer bad?
  59. japanese 6v6 amp on youtube, anyone got the link?
  60. First attempt at tube amp.
  61. 6p3s,6N1P,6j1p
  62. 6bq5 p-p diagnosise
  63. MFA Lumi suddenly whistles (on bench)
  64. Pure tetrode and negative g2
  65. ECC85, EL84 tube amp please help.
  66. Pentode buffer.
  67. 5k:8 ohm vs. 10k:16 ohm output transformer. What is the difference?
  68. Help restoring old Maas-Rowe amp
  69. Early Sansui Valve Amp
  70. mismatched transformer impedance question.
  71. Second-hand or NOS tubes?
  72. Any suggestion for a 12AT7 / ECC81 SRPP powerstage ?
  73. Looking for High voltage double triode
  74. Will this ebay cover fit my Scott 272 integrated amp?
  75. My new find
  76. Thordarson Dual Tone Control
  77. samsung experiments with "tube sound"
  78. PP OPT design
  79. Heater voltage drops?
  80. WE448A data
  81. How come signal input capacitors are not on every amp?
  82. Any body can help to identify this pair of OPTs.
  83. tubelab SE component mounting
  84. Pre-amp for Tube Sound
  85. Audion tube amp capacitor questions
  86. Hello, looking for advice on a tube project...
  87. Testing my Tube Tester
  88. Is this speaker a good choice for Tube amps
  89. Suggestions for upgrading my first tube amp!
  90. Why does the Miniwatt N3 have 4 connections to its output transformers?
  91. Anyone know if there is an octal
  92. Cathode Follower, where is the 3d H gone?
  93. Sylvania 45C14M progress.
  94. Collins R-390 Audio Deck
  95. 2 stage 2A3 SET - why does the 6n6p sim so well?
  96. Hi Everyone! Your thoughts on my Yaqin dilemma
  97. Audioromy in Shanghai ?
  98. volume Pot noise
  99. Full Music 300B solid plate sound fine ?
  100. Removing cathode-bypass capacitors, and compensation
  101. Q: UL PP Instability - Anode Grid2 Snubber
  102. The Shuguang SG-50 really support 650V in the plates ???
  103. Addinging windings to an Antek AS-... transformer
  104. Supertex dn2540 CCS Rset trimmer value
  105. help with amp ohms
  106. First Kit
  107. High-End Tube preamp with ECC88
  108. ALERT! WARNING! J. SOUND LAB 300b
  109. Gott 30u tube amp (biggs of ca)
  110. Tips needed for some testing my newly built tube amp
  111. Need help for designing C3g pentode driver for 6b4g se
  112. another circuit idea
  113. EL41 PP triode strapped
  114. Odd-ball PI circuit identification request, and headroom question
  115. b+ Delay Arrangement for Power Amp
  116. Stackin' Chokes
  117. Source of IXYS 10m45s and other CCS devices
  118. Help identifing a 12ax7a
  119. EICO HF-60, rebuild and test
  120. Hum in homebuilt amp
  121. 845 Heater Power supply problems
  122. Tubelab SE choke
  123. First Amp Build, (But not complete beginner to electronics)
  124. X10 V3 SERVICE MANUAL
  125. PP kt88 amp problem.
  126. How much power do I need?
  127. Hickok TV-7 D/U calibration
  128. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  129. Adding CF to SRPP to lower output impedance?
  130. BCF build
  131. 12vac heater - dc elevated question -
  132. 6V6 VERIABLE TUBE REGULATED
  133. please help identify jennen tube amp.
  134. Settings for ECC808 tube on 539c tester
  135. KEG-EAR 6L6-KT88 PP AUDIO AMP
  136. Aikido LV
  137. RH-84 voltages
  138. RIAA Tube Preamp Build (Part 1)
  139. Hybrid amplifier with ECC88(PCC88) + LM3875
  140. Triode and Input Transformer
  141. RH-84
  142. DL22N
  143. Single Tube Amp
  144. Antique radio info
  145. Alps & Panasonic pots (what's the dael? :: pics)
  146. Vintage GE Tube Amp
  147. Troubleshooting BIG hum problem. CJ CAV-50
  148. Impedance multiplier hybrid parafeed
  149. Crosley 68CR restore
  150. Question for EU diyaudio members
  151. need advises tweaking PSE 300B
  152. CounterPoint SA-12
  153. Bleeder Resistor for Choke Input Supply
  154. Large tube anode connections caps.
  155. Gyrators
  156. newbie questions about 300B tube amp
  157. EL84 SE advice for a beginner
  158. Re: Buffer with tube PCC88
  159. Transformer impedance calcs from windings
  160. Anyone came across AirTight ATM-2 schematic?
  161. Transmitter tube hybrid - Because why not?
  162. where is the output capacitor?
  163. Clarifications on role of pre VS power
  164. My poor man version of the Raven Preamplifier.
  165. GSG problem
  166. Transformer selection/brands
  167. Newbie DC heater help
  168. HF oscillation bursts at low ( < 40Hz) frequencies
  169. Why the GZ34 Rectifiers are so expensive!
  170. OPT designing?
  171. Looking for a DIY repair guy near Toledo or Ft. Wayne
  172. beginner: which DIY kit will go well with these drivers?
  173. Xindak MT-3
  174. Loudness controls
  175. Advice on replacing Yaqin MC-10L
  176. Converting Eico HF-81 to a simple PP EL84 (pics incl.)
  177. 12at7 dc coupled to 12at7 cathodyne to drive EL34
  178. First Tube Help
  179. ampex 6793 stereo
  180. RCA Victrola 8V91
  181. what to do with these tubes? (6AQ5/6AR5)
  182. Sylvania 45C14M advice
  183. Re-designing 6DJ8 circuit for the 6CG7
  184. Hi fi kits
  185. bias capacitor
  186. Question re: Signal Ground versus HT ground
  187. Schematic to a friend
  188. Newbie question about transformers
  189. Request for suggestions. Akai M8 mono amp schematic validation.
  190. Rectifier
  191. Source for transformer parts?
  192. odd order harmonic squelching?
  193. Best Current Production 6550 / KT88
  194. Wharfedale W12 output transformers
  195. Are we committing suicide?! (Asbestos in vaccum tube base)
  196. Help me to Identify this Tube
  197. GU50 socket blues
  198. New 18W build el84/12ax7
  199. Why a follower in a parafeed triodeamp?
  200. Heads up for Australian tube amp diyers
  201. build new amp from 2 vintage tube amps?
  202. Sansui AU-111 rebuild and need some help
  203. Interstage/Input Transformer
  204. VALVEKING ROYAL8 with 6p14p-EV
  205. Ergo Ella PP Amplifier Wiring
  206. 6DX8/ECL84/6F3P Baby Huey
  207. Old tube amp info?
  208. MEIXING MING DA MC 2006 Phonostage schematics
  209. Just what the world needs - another EL84 amp
  210. Help me pick el34b tubes
  211. heathkit SA2
  212. Need help on RIAA
  213. GU50 plate curves
  214. What tube is this?
  215. Help with GZ34
  216. Need help in modifying Roberts 770 monoblocks
  217. PP and PPP
  218. ECL82 Single Tube Amp
  219. circuit idea
  220. Need Telefunken Hymnus 5438 Dial Glass
  221. Bias probes/Am I getting true readings
  222. How to measure output power
  223. Oddblock Wooden Case
  224. Amplifier Quandary
  225. Fuse blows instantly
  226. Looking for a fairly simple Hi gain tube pre amp project
  227. Best 2a3 PP OPT.
  228. Sharing cathode resistor and capacitor
  229. Power tubes in cascode for output section?
  230. good tube service tech in Los Angeles?
  231. Proposal for a new sticky thread
  232. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  233. PCF what?
  234. stupid question about heater wire to ground
  235. OTL All American Five? (or Ten)
  236. Scored a very nice H H Scott 272!
  237. Simple DIY Stereo Tube Amp with around 20W
  238. Maton Amp
  239. New Tech
  240. LS8 pre kit as an output stage for DAC?
  241. Japanese Valves
  242. B+ delay for DHT amp
  243. QQV03-20A/CV2799
  244. 0,22 0,33 0,47.....uF
  245. Most powerful SE DIY design?
  246. 420vdc supply for a tube amp
  247. PSE 2a3 operating points?
  248. Ju-Jutsu: The Ultimate Monoblock
  249. Looking for Phono Stage ...
  250. Finished my Fisher 460t-thanks

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