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  1. My Russian SET
  2. Raysonic vs. DIY tube amp?
  3. Which pins to use first?
  4. Bypass gain stage on K16LS amp
  5. Schematic help for a Pilot 505 amp please
  6. Question re: Distortion in triode gain stage
  7. Newbie needs help
  8. Marantz Model 9
  9. Is my power transformer bad?
  10. japanese 6v6 amp on youtube, anyone got the link?
  11. First attempt at tube amp.
  12. 6p3s,6N1P,6j1p
  13. 6bq5 p-p diagnosise
  14. MFA Lumi suddenly whistles (on bench)
  15. Pure tetrode and negative g2
  16. ECC85, EL84 tube amp please help.
  17. Pentode buffer.
  18. 5k:8 ohm vs. 10k:16 ohm output transformer. What is the difference?
  19. Help restoring old Maas-Rowe amp
  20. Early Sansui Valve Amp
  21. mismatched transformer impedance question.
  22. Second-hand or NOS tubes?
  23. Any suggestion for a 12AT7 / ECC81 SRPP powerstage ?
  24. Looking for High voltage double triode
  25. Will this ebay cover fit my Scott 272 integrated amp?
  26. My new find
  27. Thordarson Dual Tone Control
  28. samsung experiments with "tube sound"
  29. PP OPT design
  30. Heater voltage drops?
  31. WE448A data
  32. How come signal input capacitors are not on every amp?
  33. Any body can help to identify this pair of OPTs.
  34. tubelab SE component mounting
  35. Pre-amp for Tube Sound
  36. Audion tube amp capacitor questions
  37. Capacitor Substitution
  38. Hello, looking for advice on a tube project...
  39. Testing my Tube Tester
  40. Is this speaker a good choice for Tube amps
  41. Suggestions for upgrading my first tube amp!
  42. Why does the Miniwatt N3 have 4 connections to its output transformers?
  43. Anyone know if there is an octal
  44. Cathode Follower, where is the 3d H gone?
  45. Sylvania 45C14M progress.
  46. Collins R-390 Audio Deck
  47. 2 stage 2A3 SET - why does the 6n6p sim so well?
  48. Hi Everyone! Your thoughts on my Yaqin dilemma
  49. Audioromy in Shanghai ?
  50. volume Pot noise
  51. Full Music 300B solid plate sound fine ?
  52. Removing cathode-bypass capacitors, and compensation
  53. Q: UL PP Instability - Anode Grid2 Snubber
  54. The Shuguang SG-50 really support 650V in the plates ???
  55. Addinging windings to an Antek AS-... transformer
  56. Supertex dn2540 CCS Rset trimmer value
  57. help with amp ohms
  58. First Kit
  59. High-End Tube preamp with ECC88
  60. ALERT! WARNING! J. SOUND LAB 300b
  61. Gott 30u tube amp (biggs of ca)
  62. Tips needed for some testing my newly built tube amp
  63. Need help for designing C3g pentode driver for 6b4g se
  64. another circuit idea
  65. EL41 PP triode strapped
  66. Odd-ball PI circuit identification request, and headroom question
  67. b+ Delay Arrangement for Power Amp
  68. Stackin' Chokes
  69. Source of IXYS 10m45s and other CCS devices
  70. Help identifing a 12ax7a
  71. EICO HF-60, rebuild and test
  72. Hum in homebuilt amp
  73. 845 Heater Power supply problems
  74. Tubelab SE choke
  75. First Amp Build, (But not complete beginner to electronics)
  76. X10 V3 SERVICE MANUAL
  77. PP kt88 amp problem.
  78. How much power do I need?
  79. Hickok TV-7 D/U calibration
  80. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  81. Adding CF to SRPP to lower output impedance?
  82. BCF build
  83. 12vac heater - dc elevated question -
  84. 6V6 VERIABLE TUBE REGULATED
  85. please help identify jennen tube amp.
  86. Settings for ECC808 tube on 539c tester
  87. KEG-EAR 6L6-KT88 PP AUDIO AMP
  88. Aikido LV
  89. RH-84 voltages
  90. RIAA Tube Preamp Build (Part 1)
  91. Hybrid amplifier with ECC88(PCC88) + LM3875
  92. Triode and Input Transformer
  93. RH-84
  94. DL22N
  95. Single Tube Amp
  96. Antique radio info
  97. Alps & Panasonic pots (what's the dael? :: pics)
  98. Vintage GE Tube Amp
  99. Troubleshooting BIG hum problem. CJ CAV-50
  100. Impedance multiplier hybrid parafeed
  101. peavey heritage 212
  102. Crosley 68CR restore
  103. Question for EU diyaudio members
  104. need advises tweaking PSE 300B
  105. CounterPoint SA-12
  106. Bleeder Resistor for Choke Input Supply
  107. Large tube anode connections caps.
  108. Gyrators
  109. newbie questions about 300B tube amp
  110. EL84 SE advice for a beginner
  111. Re: Buffer with tube PCC88
  112. Transformer impedance calcs from windings
  113. Anyone came across AirTight ATM-2 schematic?
  114. Transmitter tube hybrid - Because why not?
  115. where is the output capacitor?
  116. Clarifications on role of pre VS power
  117. My poor man version of the Raven Preamplifier.
  118. GSG problem
  119. Transformer selection/brands
  120. Newbie DC heater help
  121. HF oscillation bursts at low ( < 40Hz) frequencies
  122. Why the GZ34 Rectifiers are so expensive!
  123. OPT designing?
  124. Looking for a DIY repair guy near Toledo or Ft. Wayne
  125. beginner: which DIY kit will go well with these drivers?
  126. Xindak MT-3
  127. Loudness controls
  128. Advice on replacing Yaqin MC-10L
  129. Converting Eico HF-81 to a simple PP EL84 (pics incl.)
  130. 12at7 dc coupled to 12at7 cathodyne to drive EL34
  131. First Tube Help
  132. ampex 6793 stereo
  133. RCA Victrola 8V91
  134. what to do with these tubes? (6AQ5/6AR5)
  135. Sylvania 45C14M advice
  136. Re-designing 6DJ8 circuit for the 6CG7
  137. Hi fi kits
  138. bias capacitor
  139. Question re: Signal Ground versus HT ground
  140. Schematic to a friend
  141. Newbie question about transformers
  142. Request for suggestions. Akai M8 mono amp schematic validation.
  143. Rectifier
  144. Source for transformer parts?
  145. odd order harmonic squelching?
  146. Best Current Production 6550 / KT88
  147. Wharfedale W12 output transformers
  148. Are we committing suicide?! (Asbestos in vaccum tube base)
  149. Help me to Identify this Tube
  150. GU50 socket blues
  151. New 18W build el84/12ax7
  152. Why a follower in a parafeed triodeamp?
  153. Heads up for Australian tube amp diyers
  154. build new amp from 2 vintage tube amps?
  155. Sansui AU-111 rebuild and need some help
  156. Interstage/Input Transformer
  157. VALVEKING ROYAL8 with 6p14p-EV
  158. Ergo Ella PP Amplifier Wiring
  159. 6DX8/ECL84/6F3P Baby Huey
  160. Old tube amp info?
  161. MEIXING MING DA MC 2006 Phonostage schematics
  162. Problem with a Peavey Classic 50
  163. Just what the world needs - another EL84 amp
  164. Help me pick el34b tubes
  165. heathkit SA2
  166. Need help on RIAA
  167. GU50 plate curves
  168. What tube is this?
  169. Help with GZ34
  170. Need help in modifying Roberts 770 monoblocks
  171. PP and PPP
  172. ECL82 Single Tube Amp
  173. circuit idea
  174. Need Telefunken Hymnus 5438 Dial Glass
  175. Bias probes/Am I getting true readings
  176. How to measure output power
  177. Oddblock Wooden Case
  178. Amplifier Quandary
  179. Fuse blows instantly
  180. Looking for a fairly simple Hi gain tube pre amp project
  181. Best 2a3 PP OPT.
  182. Sharing cathode resistor and capacitor
  183. Power tubes in cascode for output section?
  184. good tube service tech in Los Angeles?
  185. Proposal for a new sticky thread
  186. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  187. PCF what?
  188. stupid question about heater wire to ground
  189. OTL All American Five? (or Ten)
  190. Scored a very nice H H Scott 272!
  191. Simple DIY Stereo Tube Amp with around 20W
  192. Maton Amp
  193. New Tech
  194. LS8 pre kit as an output stage for DAC?
  195. Japanese Valves
  196. B+ delay for DHT amp
  197. QQV03-20A/CV2799
  198. 0,22 0,33 0,47.....uF
  199. Most powerful SE DIY design?
  200. 420vdc supply for a tube amp
  201. PSE 2a3 operating points?
  202. Ju-Jutsu: The Ultimate Monoblock
  203. Looking for Phono Stage ...
  204. Finished my Fisher 460t-thanks
  205. Datasheet Cpk values
  206. Eico635 tester
  207. 6p3s...
  208. Help with Amp Salvage
  209. 808 SE Build
  210. how to bias my rebuilt dynaco st 70
  211. Want help - RCA Tube Manual RIAA Phono Stage
  212. Tube Pre-amp for both CD and Phono inputs
  213. Cascode Driver Oscillation
  214. 872b or 6gj5a for a homebrew bass amp
  215. how does it sound and perform?
  216. Bootstrapped long tail
  217. Thorens TEM 3200 clone
  218. Identifying this RCA Transformer
  219. Tube burning
  220. Add Standby Directly after Rectifier, or After First Filter Stage?
  221. Help with some tube ID
  222. CCS power amp bias
  223. this is EL34 tube of what model?
  224. Looking for constructive criticism on my first design
  225. Audio note kit 1 vs Meishu
  226. Tube Amp Gain V.S. RF Gain
  227. Kool-mu material for building audio transformer
  228. Buzz/Hum in Matrix amplifier
  229. Optimation PA-250AC Lab-Grade Audio Amplifier
  230. RS1003 in SE triode-UL monoblocks
  231. Bypass capacitors in Tube amps
  232. Basic question re: gNFB around 3 stages
  233. James PP Audio Transformers, any good?
  234. Seeking advice for tube amp kit on,seems to be, chinese site
  235. Tube pricing from 1981
  236. 6e5p WCF headphone amp with no cap!
  237. "How it's made" vacuum tubes..
  238. Citation I and IV phono schematic query
  239. GS-4V High-mu russian triode for RIAA preamp
  240. good source for amp chassis in europe?
  241. Help identify and replacement of ? resistor
  242. New tube amp diy kit required power?
  243. Decoupling DC heater supply between valves..benefit?
  244. The Aikido Comedy: Straight Talk
  245. Recapping tube preamp questions
  246. A tube amp that's actually a tesla coil.
  247. Tube "Orientation"
  248. 18 watt tremolo vvr
  249. Pre amp output, would this work?
  250. Aikido Power Amp.....Possible??

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