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  1. B&K model 747 tube tester for EL34
  2. Behringer DEQ2496 for testing amplifiers and preamps frequency response ???
  3. I need datasheet of 8753 tube, help me!
  4. New 6L6GC Project. DC -> LTP
  5. EL84 in UL
  6. 1953 revere amp conversion
  7. Manley transformer specifications
  8. Recommended 300B SE Amplifier Designs
  9. Found a new interstage coupling method (?)
  10. Amplifier Distortion (Northern Electric)
  11. when do filament supplies need to be floated
  12. gm70 filiment transformers
  13. Replacing 6922 Preamp Tube in ARC LS7
  14. Please educate me: Tube testing, the life test, and Grid Leakage
  15. 6AR6 6098 Triode PP Load Line
  16. music reference rm5-4 schematics
  17. S5 K-12G output trans
  18. Transformer center tap question
  19. EF86 + 4*EL84PSE
  20. solid state relays for plate load switching?
  21. Dont have a power transformer?
  22. Kora Equinoxe Triode or Blue Circle BC-21.1 preamp?
  23. Pre-Amp For my Tubelab Simple P-P
  24. Power Transformer Help
  25. Analog Metric 2A3 PP Kit
  26. Good, starter OTL kit
  27. Dual SE amplifier? - (not PSE) - Take two!
  28. Mysterious SE OTL headphone amp from China?!
  29. Inv. Futterman with gain stages between PI and O/P?
  30. PSU configurations for tube amp
  31. HP Model 712b Regulated Power supply
  32. Dynaco low Power Amp
  33. 300b power suply
  34. Very Strange Preamp Issue
  35. WTB: I am looking for a Freed 1400V or Chicago 1200V/1400V Potted Power Transformer
  36. tube transformer suppliers in Mercosur
  37. Please Help: 6CJ3 Damper Diode Tube as Rectifier Question
  38. time delay sophia electric
  39. Twisting the leads of filter choke
  40. This SPUD's 4 U
  41. I am Looking for tubes
  42. Thuan
  43. Nanjing 6V6GT ( 6P6P)
  44. Should I keep this old stuff?
  45. 300b
  46. ganged output transformers
  47. Holco H4P Resistors, Should I use them?
  48. 6BX8 curves, help !
  49. SANSUI AU-70 or 1000A???
  50. General Electric YTW-1 Tube Checker
  51. Ground or amp hum-which?
  52. need help to fix the "hiss" on my tube preamp
  53. Best SE interstage 1:1 for min. 15mA?
  54. Dual Single Ended Amplifier? - (not PSE)
  55. RIP Forum Member "Ivey"
  56. Balanced Buffer Needed with a Balanced Volume Control?
  57. valves to replace opamps in cd player
  58. Replacing capacitors on Audio Research D40 power amp.
  59. No sound and low B+?
  60. Replacing capacitors on Audio Research D40 power amp.
  61. 2 Channel Tube Amp and Sub Connection
  62. EZ125 Amp Project
  63. Yaqin MS-22b Phono Amp
  64. First post and a couple P.P. questions
  65. adding a preamp to tube power amp
  66. 6SN7 6N8S preamp suggestions
  67. 300b polarity
  68. Electrolytic capacitor vs extra triode stage
  69. WE JAN 274B Dating
  70. EICO 666 Tester Help
  71. Hickock 550X signal voltage
  72. First Headphone tube amp kit to build??
  73. Anyone owns a Dynavox VR-307 Amplifier ?
  74. NOS potted Chicago Transformer 1BC-150
  75. capacitor voltage for tube amp power supply
  76. 808 SE Design Help!
  77. Why can't I build my own ARC LS-5 or CJ PV-12?
  78. Post-mortem on a 80 year old 2A3 amp
  79. 6e5p gm70 with 6d22s?
  80. 6L6-6V6-EL34-KT88-6CA7-EL84
  81. Scheme for SE amp
  82. $16,000
  83. Hybrid power amp
  84. Diagnosis please
  85. On now! Jamerson's Ampeg
  86. BK 707 Tube Tester Mods
  87. monarch 614
  88. Separate Filament and B+ Switches
  89. Dynaco Low Power with 12AY7's
  90. PTP kits available?
  91. Which OP transformer and materials?
  92. Power of Tube Amp and Transistors Amp
  93. testing tubes
  94. current servo not voltage.
  95. Help Me, How to make Pre-amp using 12AU7 tube and Op-Amp Ic mix?
  96. 300b filament
  97. DHT SE auto bias circuit
  98. Anyone try swapping 6SN7 w/ 6F8G
  99. Eliminating Cathode Bypass Caps In SET Amplifier
  100. Nano vacuum tube
  101. Help High Line voltage
  102. Switchable Amp Output?
  103. PCB or hardwire?
  104. 27 line pre amplifier
  105. Mystery tubes on FB?
  106. amplifier discussion
  107. Mikael Abdellah KT88 SE with Cornet2
  108. 5879 to 12AX7 conversion
  109. CCDA SE output stage?
  110. Bravo V2 tube headphone amp - high pitched noise?
  111. Preamp Grounding Question
  112. SE on 300B
  113. musical paradise mp 301
  114. Newbie plan
  115. Capacitor Voltage rating Question
  116. Can anybody identify this amp?
  117. Old RCA radio; can anyone ID this?
  118. Class AB2 - Kink, how and why?
  119. 6SL7, 6J5, or 6SN7 unity gain buffer amp
  120. CCDA dissimilar triode preamp
  121. NOS NEGLECTED HIGH-END AUDIO TUBE
  122. GOSS C-core suppliers in UK/Europe
  123. Old radio -> tube amplifier
  124. Sowter 8650 in SE
  125. My Russian SET
  126. Raysonic vs. DIY tube amp?
  127. Which pins to use first?
  128. Bypass gain stage on K16LS amp
  129. Schematic help for a Pilot 505 amp please
  130. Question re: Distortion in triode gain stage
  131. Newbie needs help
  132. Marantz Model 9
  133. Is my power transformer bad?
  134. japanese 6v6 amp on youtube, anyone got the link?
  135. First attempt at tube amp.
  136. 6p3s,6N1P,6j1p
  137. 6bq5 p-p diagnosise
  138. MFA Lumi suddenly whistles (on bench)
  139. Pure tetrode and negative g2
  140. ECC85, EL84 tube amp please help.
  141. Pentode buffer.
  142. 5k:8 ohm vs. 10k:16 ohm output transformer. What is the difference?
  143. Help restoring old Maas-Rowe amp
  144. Early Sansui Valve Amp
  145. mismatched transformer impedance question.
  146. Second-hand or NOS tubes?
  147. Any suggestion for a 12AT7 / ECC81 SRPP powerstage ?
  148. Looking for High voltage double triode
  149. Will this ebay cover fit my Scott 272 integrated amp?
  150. My new find
  151. Thordarson Dual Tone Control
  152. samsung experiments with "tube sound"
  153. PP OPT design
  154. Heater voltage drops?
  155. WE448A data
  156. How come signal input capacitors are not on every amp?
  157. Any body can help to identify this pair of OPTs.
  158. tubelab SE component mounting
  159. Pre-amp for Tube Sound
  160. Audion tube amp capacitor questions
  161. Capacitor Substitution
  162. Hello, looking for advice on a tube project...
  163. Testing my Tube Tester
  164. Is this speaker a good choice for Tube amps
  165. Suggestions for upgrading my first tube amp!
  166. Why does the Miniwatt N3 have 4 connections to its output transformers?
  167. Anyone know if there is an octal
  168. Cathode Follower, where is the 3d H gone?
  169. Sylvania 45C14M progress.
  170. Collins R-390 Audio Deck
  171. 2 stage 2A3 SET - why does the 6n6p sim so well?
  172. Hi Everyone! Your thoughts on my Yaqin dilemma
  173. Audioromy in Shanghai ?
  174. volume Pot noise
  175. Full Music 300B solid plate sound fine ?
  176. Removing cathode-bypass capacitors, and compensation
  177. Q: UL PP Instability - Anode Grid2 Snubber
  178. The Shuguang SG-50 really support 650V in the plates ???
  179. Addinging windings to an Antek AS-... transformer
  180. Supertex dn2540 CCS Rset trimmer value
  181. help with amp ohms
  182. First Kit
  183. High-End Tube preamp with ECC88
  184. ALERT! WARNING! J. SOUND LAB 300b
  185. Gott 30u tube amp (biggs of ca)
  186. Tips needed for some testing my newly built tube amp
  187. Need help for designing C3g pentode driver for 6b4g se
  188. another circuit idea
  189. EL41 PP triode strapped
  190. Odd-ball PI circuit identification request, and headroom question
  191. b+ Delay Arrangement for Power Amp
  192. Stackin' Chokes
  193. Source of IXYS 10m45s and other CCS devices
  194. Help identifing a 12ax7a
  195. EICO HF-60, rebuild and test
  196. Hum in homebuilt amp
  197. 845 Heater Power supply problems
  198. Tubelab SE choke
  199. First Amp Build, (But not complete beginner to electronics)
  200. X10 V3 SERVICE MANUAL
  201. PP kt88 amp problem.
  202. How much power do I need?
  203. Hickok TV-7 D/U calibration
  204. 12 VAC for both AC heaters and DC B+ via voltage doubler?
  205. Adding CF to SRPP to lower output impedance?
  206. BCF build
  207. 12vac heater - dc elevated question -
  208. 6V6 VERIABLE TUBE REGULATED
  209. please help identify jennen tube amp.
  210. Settings for ECC808 tube on 539c tester
  211. KEG-EAR 6L6-KT88 PP AUDIO AMP
  212. Aikido LV
  213. RH-84 voltages
  214. RIAA Tube Preamp Build (Part 1)
  215. Hybrid amplifier with ECC88(PCC88) + LM3875
  216. Triode and Input Transformer
  217. RH-84
  218. DL22N
  219. Single Tube Amp
  220. Antique radio info
  221. Alps & Panasonic pots (what's the dael? :: pics)
  222. Vintage GE Tube Amp
  223. Troubleshooting BIG hum problem. CJ CAV-50
  224. Impedance multiplier hybrid parafeed
  225. peavey heritage 212
  226. Crosley 68CR restore
  227. Question for EU diyaudio members
  228. need advises tweaking PSE 300B
  229. CounterPoint SA-12
  230. Bleeder Resistor for Choke Input Supply
  231. Large tube anode connections caps.
  232. Gyrators
  233. newbie questions about 300B tube amp
  234. EL84 SE advice for a beginner
  235. Re: Buffer with tube PCC88
  236. Transformer impedance calcs from windings
  237. Anyone came across AirTight ATM-2 schematic?
  238. Transmitter tube hybrid - Because why not?
  239. where is the output capacitor?
  240. Clarifications on role of pre VS power
  241. My poor man version of the Raven Preamplifier.
  242. GSG problem
  243. Transformer selection/brands
  244. Newbie DC heater help
  245. HF oscillation bursts at low ( < 40Hz) frequencies
  246. Why the GZ34 Rectifiers are so expensive!
  247. OPT designing?
  248. Looking for a DIY repair guy near Toledo or Ft. Wayne
  249. beginner: which DIY kit will go well with these drivers?
  250. Xindak MT-3

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