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  1. Nano vacuum tube
  2. Help High Line voltage
  3. Switchable Amp Output?
  4. PCB or hardwire?
  5. 27 line pre amplifier
  6. Mystery tubes on FB?
  7. amplifier discussion
  8. Mikael Abdellah KT88 SE with Cornet2
  9. 5879 to 12AX7 conversion
  10. CCDA SE output stage?
  11. Bravo V2 tube headphone amp - high pitched noise?
  12. Preamp Grounding Question
  13. SE on 300B
  14. musical paradise mp 301
  15. Newbie plan
  16. Capacitor Voltage rating Question
  17. Can anybody identify this amp?
  18. Old RCA radio; can anyone ID this?
  19. Class AB2 - Kink, how and why?
  20. 6SL7, 6J5, or 6SN7 unity gain buffer amp
  21. CCDA dissimilar triode preamp
  22. NOS NEGLECTED HIGH-END AUDIO TUBE
  23. GOSS C-core suppliers in UK/Europe
  24. Old radio -> tube amplifier
  25. Sowter 8650 in SE
  26. My Russian SET
  27. Raysonic vs. DIY tube amp?
  28. Which pins to use first?
  29. Bypass gain stage on K16LS amp
  30. Schematic help for a Pilot 505 amp please
  31. Question re: Distortion in triode gain stage
  32. Newbie needs help
  33. Marantz Model 9
  34. Is my power transformer bad?
  35. japanese 6v6 amp on youtube, anyone got the link?
  36. First attempt at tube amp.
  37. 6p3s,6N1P,6j1p
  38. 6bq5 p-p diagnosise
  39. MFA Lumi suddenly whistles (on bench)
  40. Pure tetrode and negative g2
  41. ECC85, EL84 tube amp please help.
  42. Pentode buffer.
  43. 5k:8 ohm vs. 10k:16 ohm output transformer. What is the difference?
  44. Help restoring old Maas-Rowe amp
  45. Early Sansui Valve Amp
  46. mismatched transformer impedance question.
  47. Second-hand or NOS tubes?
  48. Any suggestion for a 12AT7 / ECC81 SRPP powerstage ?
  49. Looking for High voltage double triode
  50. Will this ebay cover fit my Scott 272 integrated amp?
  51. My new find
  52. Thordarson Dual Tone Control
  53. samsung experiments with "tube sound"
  54. PP OPT design
  55. Heater voltage drops?
  56. WE448A data
  57. How come signal input capacitors are not on every amp?
  58. Any body can help to identify this pair of OPTs.
  59. tubelab SE component mounting
  60. Pre-amp for Tube Sound
  61. Audion tube amp capacitor questions
  62. Capacitor Substitution
  63. Hello, looking for advice on a tube project...
  64. Testing my Tube Tester
  65. Is this speaker a good choice for Tube amps
  66. Suggestions for upgrading my first tube amp!
  67. Why does the Miniwatt N3 have 4 connections to its output transformers?
  68. Anyone know if there is an octal
  69. Cathode Follower, where is the 3d H gone?
  70. Sylvania 45C14M progress.
  71. Collins R-390 Audio Deck
  72. 2 stage 2A3 SET - why does the 6n6p sim so well?
  73. Hi Everyone! Your thoughts on my Yaqin dilemma
  74. Audioromy in Shanghai ?
  75. volume Pot noise
  76. Full Music 300B solid plate sound fine ?
  77. Removing cathode-bypass capacitors, and compensation
  78. Q: UL PP Instability - Anode Grid2 Snubber
  79. The Shuguang SG-50 really support 650V in the plates ???
  80. Addinging windings to an Antek AS-... transformer
  81. Supertex dn2540 CCS Rset trimmer value
  82. help with amp ohms
  83. First Kit
  84. High-End Tube preamp with ECC88
  85. ALERT! WARNING! J. SOUND LAB 300b
  86. Gott 30u tube amp (biggs of ca)
  87. Tips needed for some testing my newly built tube amp
  88. Need help for designing C3g pentode driver for 6b4g se
  89. another circuit idea
  90. EL41 PP triode strapped
  91. Odd-ball PI circuit identification request, and headroom question
  92. b+ Delay Arrangement for Power Amp
  93. Stackin' Chokes
  94. Source of IXYS 10m45s and other CCS devices
  95. Help identifing a 12ax7a
  96. EICO HF-60, rebuild and test
  97. Hum in homebuilt amp
  98. 845 Heater Power supply problems
  99. Tubelab SE choke
  100. First Amp Build, (But not complete beginner to electronics)
  101. X10 V3 SERVICE MANUAL
  102. PP kt88 amp problem.
  103. How much power do I need?
  104. Hickok TV-7 D/U calibration
  105. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  106. Adding CF to SRPP to lower output impedance?
  107. BCF build
  108. 12vac heater - dc elevated question -
  109. 6V6 VERIABLE TUBE REGULATED
  110. please help identify jennen tube amp.
  111. Settings for ECC808 tube on 539c tester
  112. KEG-EAR 6L6-KT88 PP AUDIO AMP
  113. Aikido LV
  114. RH-84 voltages
  115. RIAA Tube Preamp Build (Part 1)
  116. Hybrid amplifier with ECC88(PCC88) + LM3875
  117. Triode and Input Transformer
  118. RH-84
  119. DL22N
  120. Single Tube Amp
  121. Antique radio info
  122. Alps & Panasonic pots (what's the dael? :: pics)
  123. Vintage GE Tube Amp
  124. Troubleshooting BIG hum problem. CJ CAV-50
  125. Impedance multiplier hybrid parafeed
  126. peavey heritage 212
  127. Crosley 68CR restore
  128. Question for EU diyaudio members
  129. need advises tweaking PSE 300B
  130. CounterPoint SA-12
  131. Bleeder Resistor for Choke Input Supply
  132. Large tube anode connections caps.
  133. Gyrators
  134. newbie questions about 300B tube amp
  135. EL84 SE advice for a beginner
  136. Re: Buffer with tube PCC88
  137. Transformer impedance calcs from windings
  138. Anyone came across AirTight ATM-2 schematic?
  139. Transmitter tube hybrid - Because why not?
  140. where is the output capacitor?
  141. Clarifications on role of pre VS power
  142. My poor man version of the Raven Preamplifier.
  143. GSG problem
  144. Transformer selection/brands
  145. Newbie DC heater help
  146. HF oscillation bursts at low ( < 40Hz) frequencies
  147. Why the GZ34 Rectifiers are so expensive!
  148. OPT designing?
  149. Looking for a DIY repair guy near Toledo or Ft. Wayne
  150. beginner: which DIY kit will go well with these drivers?
  151. Xindak MT-3
  152. Loudness controls
  153. Advice on replacing Yaqin MC-10L
  154. Converting Eico HF-81 to a simple PP EL84 (pics incl.)
  155. 12at7 dc coupled to 12at7 cathodyne to drive EL34
  156. First Tube Help
  157. ampex 6793 stereo
  158. RCA Victrola 8V91
  159. what to do with these tubes? (6AQ5/6AR5)
  160. Sylvania 45C14M advice
  161. Re-designing 6DJ8 circuit for the 6CG7
  162. Hi fi kits
  163. bias capacitor
  164. Question re: Signal Ground versus HT ground
  165. Schematic to a friend
  166. Newbie question about transformers
  167. Request for suggestions. Akai M8 mono amp schematic validation.
  168. Rectifier
  169. Source for transformer parts?
  170. odd order harmonic squelching?
  171. Best Current Production 6550 / KT88
  172. Wharfedale W12 output transformers
  173. Are we committing suicide?! (Asbestos in vaccum tube base)
  174. Help me to Identify this Tube
  175. GU50 socket blues
  176. New 18W build el84/12ax7
  177. Why a follower in a parafeed triodeamp?
  178. Heads up for Australian tube amp diyers
  179. build new amp from 2 vintage tube amps?
  180. Sansui AU-111 rebuild and need some help
  181. Interstage/Input Transformer
  182. VALVEKING ROYAL8 with 6p14p-EV
  183. Ergo Ella PP Amplifier Wiring
  184. 6DX8/ECL84/6F3P Baby Huey
  185. Old tube amp info?
  186. MEIXING MING DA MC 2006 Phonostage schematics
  187. Problem with a Peavey Classic 50
  188. Just what the world needs - another EL84 amp
  189. Help me pick el34b tubes
  190. heathkit SA2
  191. Need help on RIAA
  192. GU50 plate curves
  193. What tube is this?
  194. Help with GZ34
  195. Need help in modifying Roberts 770 monoblocks
  196. PP and PPP
  197. ECL82 Single Tube Amp
  198. circuit idea
  199. Need Telefunken Hymnus 5438 Dial Glass
  200. Bias probes/Am I getting true readings
  201. How to measure output power
  202. Oddblock Wooden Case
  203. Amplifier Quandary
  204. Fuse blows instantly
  205. Looking for a fairly simple Hi gain tube pre amp project
  206. Best 2a3 PP OPT.
  207. Sharing cathode resistor and capacitor
  208. Power tubes in cascode for output section?
  209. good tube service tech in Los Angeles?
  210. Proposal for a new sticky thread
  211. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  212. PCF what?
  213. stupid question about heater wire to ground
  214. OTL All American Five? (or Ten)
  215. Scored a very nice H H Scott 272!
  216. Simple DIY Stereo Tube Amp with around 20W
  217. Maton Amp
  218. New Tech
  219. LS8 pre kit as an output stage for DAC?
  220. Japanese Valves
  221. B+ delay for DHT amp
  222. QQV03-20A/CV2799
  223. 0,22 0,33 0,47.....uF
  224. Most powerful SE DIY design?
  225. 420vdc supply for a tube amp
  226. PSE 2a3 operating points?
  227. Ju-Jutsu: The Ultimate Monoblock
  228. Looking for Phono Stage ...
  229. Finished my Fisher 460t-thanks
  230. Datasheet Cpk values
  231. Eico635 tester
  232. 6p3s...
  233. Help with Amp Salvage
  234. 808 SE Build
  235. how to bias my rebuilt dynaco st 70
  236. Want help - RCA Tube Manual RIAA Phono Stage
  237. Tube Pre-amp for both CD and Phono inputs
  238. Cascode Driver Oscillation
  239. 872b or 6gj5a for a homebrew bass amp
  240. how does it sound and perform?
  241. Bootstrapped long tail
  242. Thorens TEM 3200 clone
  243. Identifying this RCA Transformer
  244. Tube burning
  245. Add Standby Directly after Rectifier, or After First Filter Stage?
  246. Help with some tube ID
  247. CCS power amp bias
  248. this is EL34 tube of what model?
  249. Looking for constructive criticism on my first design
  250. Audio note kit 1 vs Meishu

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