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  1. WE448A data
  2. How come signal input capacitors are not on every amp?
  3. Any body can help to identify this pair of OPTs.
  4. tubelab SE component mounting
  5. Pre-amp for Tube Sound
  6. Audion tube amp capacitor questions
  7. Capacitor Substitution
  8. Hello, looking for advice on a tube project...
  9. Testing my Tube Tester
  10. Is this speaker a good choice for Tube amps
  11. Suggestions for upgrading my first tube amp!
  12. Why does the Miniwatt N3 have 4 connections to its output transformers?
  13. Anyone know if there is an octal
  14. Cathode Follower, where is the 3d H gone?
  15. Sylvania 45C14M progress.
  16. Collins R-390 Audio Deck
  17. 2 stage 2A3 SET - why does the 6n6p sim so well?
  18. Hi Everyone! Your thoughts on my Yaqin dilemma
  19. Audioromy in Shanghai ?
  20. volume Pot noise
  21. Full Music 300B solid plate sound fine ?
  22. Removing cathode-bypass capacitors, and compensation
  23. Q: UL PP Instability - Anode Grid2 Snubber
  24. The Shuguang SG-50 really support 650V in the plates ???
  25. Addinging windings to an Antek AS-... transformer
  26. Supertex dn2540 CCS Rset trimmer value
  27. help with amp ohms
  28. First Kit
  29. High-End Tube preamp with ECC88
  30. ALERT! WARNING! J. SOUND LAB 300b
  31. Gott 30u tube amp (biggs of ca)
  32. Tips needed for some testing my newly built tube amp
  33. Need help for designing C3g pentode driver for 6b4g se
  34. another circuit idea
  35. EL41 PP triode strapped
  36. Odd-ball PI circuit identification request, and headroom question
  37. b+ Delay Arrangement for Power Amp
  38. Stackin' Chokes
  39. Source of IXYS 10m45s and other CCS devices
  40. Help identifing a 12ax7a
  41. EICO HF-60, rebuild and test
  42. Hum in homebuilt amp
  43. 845 Heater Power supply problems
  44. Tubelab SE choke
  45. First Amp Build, (But not complete beginner to electronics)
  46. X10 V3 SERVICE MANUAL
  47. PP kt88 amp problem.
  48. How much power do I need?
  49. Hickok TV-7 D/U calibration
  50. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  51. Adding CF to SRPP to lower output impedance?
  52. BCF build
  53. 12vac heater - dc elevated question -
  54. 6V6 VERIABLE TUBE REGULATED
  55. please help identify jennen tube amp.
  56. Settings for ECC808 tube on 539c tester
  57. KEG-EAR 6L6-KT88 PP AUDIO AMP
  58. Aikido LV
  59. RH-84 voltages
  60. RIAA Tube Preamp Build (Part 1)
  61. Hybrid amplifier with ECC88(PCC88) + LM3875
  62. Triode and Input Transformer
  63. RH-84
  64. DL22N
  65. Single Tube Amp
  66. Antique radio info
  67. Alps & Panasonic pots (what's the dael? :: pics)
  68. Vintage GE Tube Amp
  69. Troubleshooting BIG hum problem. CJ CAV-50
  70. Impedance multiplier hybrid parafeed
  71. peavey heritage 212
  72. Crosley 68CR restore
  73. Question for EU diyaudio members
  74. need advises tweaking PSE 300B
  75. CounterPoint SA-12
  76. Bleeder Resistor for Choke Input Supply
  77. Large tube anode connections caps.
  78. Gyrators
  79. newbie questions about 300B tube amp
  80. EL84 SE advice for a beginner
  81. Re: Buffer with tube PCC88
  82. Transformer impedance calcs from windings
  83. Anyone came across AirTight ATM-2 schematic?
  84. Transmitter tube hybrid - Because why not?
  85. where is the output capacitor?
  86. Clarifications on role of pre VS power
  87. My poor man version of the Raven Preamplifier.
  88. GSG problem
  89. Transformer selection/brands
  90. Newbie DC heater help
  91. HF oscillation bursts at low ( < 40Hz) frequencies
  92. Why the GZ34 Rectifiers are so expensive!
  93. OPT designing?
  94. Looking for a DIY repair guy near Toledo or Ft. Wayne
  95. beginner: which DIY kit will go well with these drivers?
  96. Xindak MT-3
  97. Loudness controls
  98. Advice on replacing Yaqin MC-10L
  99. Converting Eico HF-81 to a simple PP EL84 (pics incl.)
  100. 12at7 dc coupled to 12at7 cathodyne to drive EL34
  101. First Tube Help
  102. ampex 6793 stereo
  103. RCA Victrola 8V91
  104. what to do with these tubes? (6AQ5/6AR5)
  105. Sylvania 45C14M advice
  106. Re-designing 6DJ8 circuit for the 6CG7
  107. Hi fi kits
  108. bias capacitor
  109. Question re: Signal Ground versus HT ground
  110. Schematic to a friend
  111. Newbie question about transformers
  112. Request for suggestions. Akai M8 mono amp schematic validation.
  113. Rectifier
  114. Source for transformer parts?
  115. odd order harmonic squelching?
  116. Best Current Production 6550 / KT88
  117. Wharfedale W12 output transformers
  118. Are we committing suicide?! (Asbestos in vaccum tube base)
  119. Help me to Identify this Tube
  120. GU50 socket blues
  121. New 18W build el84/12ax7
  122. Why a follower in a parafeed triodeamp?
  123. Heads up for Australian tube amp diyers
  124. build new amp from 2 vintage tube amps?
  125. Sansui AU-111 rebuild and need some help
  126. Interstage/Input Transformer
  127. VALVEKING ROYAL8 with 6p14p-EV
  128. Ergo Ella PP Amplifier Wiring
  129. 6DX8/ECL84/6F3P Baby Huey
  130. Old tube amp info?
  131. MEIXING MING DA MC 2006 Phonostage schematics
  132. Problem with a Peavey Classic 50
  133. Just what the world needs - another EL84 amp
  134. Help me pick el34b tubes
  135. heathkit SA2
  136. Need help on RIAA
  137. GU50 plate curves
  138. What tube is this?
  139. Help with GZ34
  140. Need help in modifying Roberts 770 monoblocks
  141. PP and PPP
  142. ECL82 Single Tube Amp
  143. circuit idea
  144. Need Telefunken Hymnus 5438 Dial Glass
  145. Bias probes/Am I getting true readings
  146. How to measure output power
  147. Oddblock Wooden Case
  148. Amplifier Quandary
  149. Fuse blows instantly
  150. Looking for a fairly simple Hi gain tube pre amp project
  151. Best 2a3 PP OPT.
  152. Sharing cathode resistor and capacitor
  153. Power tubes in cascode for output section?
  154. good tube service tech in Los Angeles?
  155. Proposal for a new sticky thread
  156. The History of the EL-34 and other Pentodes and Beam Tetrodes.
  157. PCF what?
  158. stupid question about heater wire to ground
  159. OTL All American Five? (or Ten)
  160. Scored a very nice H H Scott 272!
  161. Simple DIY Stereo Tube Amp with around 20W
  162. Maton Amp
  163. New Tech
  164. LS8 pre kit as an output stage for DAC?
  165. Japanese Valves
  166. B+ delay for DHT amp
  167. QQV03-20A/CV2799
  168. 0,22 0,33 0,47.....uF
  169. Most powerful SE DIY design?
  170. 420vdc supply for a tube amp
  171. PSE 2a3 operating points?
  172. Ju-Jutsu: The Ultimate Monoblock
  173. Looking for Phono Stage ...
  174. Finished my Fisher 460t-thanks
  175. Datasheet Cpk values
  176. Eico635 tester
  177. 6p3s...
  178. Help with Amp Salvage
  179. 808 SE Build
  180. how to bias my rebuilt dynaco st 70
  181. Want help - RCA Tube Manual RIAA Phono Stage
  182. Tube Pre-amp for both CD and Phono inputs
  183. Cascode Driver Oscillation
  184. 872b or 6gj5a for a homebrew bass amp
  185. how does it sound and perform?
  186. Bootstrapped long tail
  187. Thorens TEM 3200 clone
  188. Identifying this RCA Transformer
  189. Tube burning
  190. Add Standby Directly after Rectifier, or After First Filter Stage?
  191. Help with some tube ID
  192. CCS power amp bias
  193. this is EL34 tube of what model?
  194. Looking for constructive criticism on my first design
  195. Audio note kit 1 vs Meishu
  196. Tube Amp Gain V.S. RF Gain
  197. Kool-mu material for building audio transformer
  198. Buzz/Hum in Matrix amplifier
  199. Optimation PA-250AC Lab-Grade Audio Amplifier
  200. RS1003 in SE triode-UL monoblocks
  201. Bypass capacitors in Tube amps
  202. Basic question re: gNFB around 3 stages
  203. James PP Audio Transformers, any good?
  204. Seeking advice for tube amp kit on,seems to be, chinese site
  205. Tube pricing from 1981
  206. 6e5p WCF headphone amp with no cap!
  207. "How it's made" vacuum tubes..
  208. Citation I and IV phono schematic query
  209. GS-4V High-mu russian triode for RIAA preamp
  210. good source for amp chassis in europe?
  211. Help identify and replacement of ? resistor
  212. New tube amp diy kit required power?
  213. Decoupling DC heater supply between valves..benefit?
  214. The Aikido Comedy: Straight Talk
  215. Recapping tube preamp questions
  216. A tube amp that's actually a tesla coil.
  217. Tube "Orientation"
  218. 18 watt tremolo vvr
  219. Pre amp output, would this work?
  220. Aikido Power Amp.....Possible??
  221. 12AX7 questions
  222. 6550 PUSH-PULL
  223. CCS at plate? Unknown schematic part
  224. Most odd grid choke behaviour.
  225. Spec for Altec TP-404 Transformer
  226. why do wimpy drivers for 2A3 work as well as they do?
  227. Seeking advice on Tube buffer / pre-amp
  228. 8x Push-pull KT88 class A in triode mode
  229. Tube Pre dull into Tube Amp - cause ?
  230. FINALLY I can start building my GM70
  231. Russian triodes ГИ-15Б arriving in a few days
  232. Cap or resistor
  233. KT88/PP driver confusion
  234. Simple SE GU-50
  235. Darling 1626
  236. 01a DHT Preamp
  237. Suitable tubes for Gomes output
  238. phono line stage project
  239. Whats wrong with this circuit?
  240. Any Newcomb Gurus.?
  241. Preamp Tube MU Level?
  242. SRPP Paraccordion topology ?
  243. Replacing 6922 with 6FQ7 in Conrad Johnson ET3 preamp
  244. Modification of a Chinese KT90 PP amplifier
  245. Tricky Headphone Amp design for AK4396
  246. How to know voltage bias adjustmentwith this data?
  247. Strange Stability Enhancement Trick
  248. has anyone bought tubes from http://www.tangotubes.com/
  249. “Earmax / G3 / Morgan Jones / Cavalli” Headphone Amp Reissue with 6SN7 Steroids
  250. Ever heard of British transofmer company "Ro"?

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