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

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