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  1. Magnavox 6V6 circuit and output transformers.
  2. 13.8 volt smps for a kt120 SE amp???
  3. EL84 custom monoblocks
  4. Little Bear pre amp valuable find...
  5. ECL8? Is this the proper name of this tube?
  6. EL 502 / EL 511
  7. Used too weak diode, fuse blew.
  8. My first ever vacuum tube amplifier :)
  9. ATS25N -- Any use for audio ??
  10. Maggie 9300 Amp Problem
  11. Musicmaster 6AQ5A socket
  12. 6922 or 12AX7
  13. nobsound amp
  14. New project: pre and power mono, what to build?
  15. Radford bias: options for ultralinear output
  16. Class D Amplifier -- building blocks
  17. HT windings with no CT
  18. Dynaco st 70 resistor
  19. Older Conrad Johnson or new something else
  20. Power supply dummy load
  21. Micro-power, micro cost amp with Rod-Tubes, 1P24B-V
  22. A bit of fun with archaic converters
  23. DOUK 5670+6AQ5+6E2 push-pull merge Class AB tube amp HIFI amplifier DIY KIT
  24. Counterpoint SA-5.1 with dead channel
  25. need safety advise - speaker output ternimals
  26. Marantz 8B Replica Build
  27. Why Gold Grids
  28. "Shiny Eyes" PSE 300B
  29. PCB layout for Valves
  30. rogers cadet mkiii
  31. Direct-Coupled Tube (or Tube-MOSFET) Headphone Amp Circuit
  32. My GM70 amp...separating the input+driver from the output stage
  33. My Quad II and 22 restoration
  34. Help with an OTL CV3618 amp design
  35. stancore NOS power transformer Picture
  36. Choosing a tube amplifier to build, HELP needed
  37. FB circuit for a Maggie 175 with Edcor UL OT's
  38. Gary Lays it on the Line (Classic Output XFMRs)
  39. Info needed on adding subwoofer to tune amp
  40. Help me understand this 7189A SE tube amp?
  41. uTracer Users: Could you trace Western Electric 436A, 448A tubes ?
  42. Tube amp project for 4 ohm speakers
  43. Wouldn't equal plate V + screen V = triode mode?
  44. 866A, 3B25 LTSPICE models
  45. 6HB6 as finals
  46. Leak OP Transformer Mod - Assistance please
  47. strange noise from tube line amp
  48. 6a6 tube as power output in headphone amp
  49. Mullard 6-7 stereo valve amp rebuild
  50. tube regulator for B+
  51. Yet another HV regulator
  52. Opinions on Clamping a ring-of-two bias-block in cathode of EL84
  53. Odd stabilized HV power EF86 + EL84
  54. NL710, 6011
  55. Somebody can identify this tube?
  56. Bullet proof driver circuit
  57. Need Grounding Advice for my System
  58. Use the chassis as the heatsink - Need safety advise
  59. Kofi's Tetra Sans
  60. Spice Simulation of NFB Amp with embedded PF
  61. Simplicity or complexity?
  62. 6N16B Aikido
  63. How to test a power supply
  64. Buying tubes in Bulgaria
  65. Input Trafo MFG reviews needed
  66. A cautinary tale.
  67. HELP! Hybrid Rectifier PSU with 2 Diodes und 2 TV-Dampers 6CG3
  68. ecc99-2a3:opinion
  69. Triode troubles
  70. Safe PSU capacitor values for old Dyna amp?
  71. KT88, 6550 SE Triode Strapped Performance.
  72. Dynaco A431 OPTs
  73. Gingertube's 'bias-block' EL84 Heatsunk MJE340?
  74. SST-70 w/KT-150's mono's build
  75. Error Correction?
  76. Tube amp issue
  77. 4x6N3 preamp board from ebay
  78. time delayed LED for heater
  79. Aikido PSU decisions
  80. coupling caps for RCA rebuild
  81. Recommended coax
  82. Adding solid state bass to valves
  83. Incompatibility between Aikido Pre and Tubelab SimpleSE
  84. What power amp design would suit Esoteric MG-20?
  85. PL36 (triode) SE
  86. Any thoughts on this?
  87. BAT VK 55 paralleled
  88. Looking for a good phono preamp schematic.
  89. Nice diy from Poland
  90. Unballancer humming in one channel
  91. 6S19P tubes instead of 7233 tubes.?
  92. Looking for good stereo amp <$350 - help
  93. Question on EL84 SE triode with CCS at cathode
  94. Convert choke loaded 12b4 to CCS and retain od3's
  95. What can I make with these?
  96. 12AT7 LTP Calling Eli Duttman
  97. Book Help, Please?
  98. Amplifier class A EL34
  99. ps audio hybrid tube buffer
  100. Negative Feedback Amplifier with embedded Positive Feedback Booster
  101. Looking for a single ended amp.
  102. EF39 as 300B driver...
  103. How is Electro Harmonix 6922 sonicly compared to NOS?
  104. Tube amp driving a Subwoofer
  105. Leak Stereo 20 Power Supply Choke?
  106. help me read circuit: broski 300b shunt reg
  107. CCS current regulators for OP valves
  108. 1930's push pull field coil amplifier
  109. Loudness and power and volts
  110. Opinions; big mess or have potential?
  111. Star grounding
  112. High NFB OTL headphone amp
  113. Any technical advantages of almost floating grounds?
  114. Output transformer
  115. 12AU7 Tube Line Pre-amp on Ebay
  116. Would you run these at say 1200vdc?
  117. MOSFET equivalent
  118. 6BY5 GA full wave rectifier replacement
  119. ID those parts - trafo
  120. Sweeps in class A
  121. Preamp valve rectified power supply
  122. Grommes Precision S-35 - Worth playing with?
  123. 6922 or E88CC in the Rode NTK Mic
  124. What the hell caused this?
  125. 6SN7 Aikido White Follower - Spice simulation
  126. Need to build a moving coil stage
  127. You guys and gals recognize any of this equipment?
  128. Help with first amp design, SET no feedback hp amp
  129. LTSPICE problems with 10Y model
  130. 5876 tube
  131. Claus Byrith 4-30: missing valve in the PCB?
  132. KR T1610 PP amp building
  133. Pls Help me Identify these Tubes!
  134. measuring output transformer primary impedance
  135. Unusual output transformer Triad
  136. Input transformer differences
  137. Faint buzz through power stage (845)
  138. Pros and Cons of 3rd Stage in SE (6AV5/2A3 drive requirements)
  139. Star grounding - wooden box
  140. R601P Tube Radio
  141. analog metric el34 se amp
  142. EL34 PP amplifier suggestions
  143. 6AU6 Triode Mode
  144. Another GM70
  145. newbie amp question.
  146. Push-Pull Plate Choke from Edcor?
  147. Finalizing 300B Amps==Please Comment
  148. Help!!!
  149. Controlling gain in VA stage
  150. 833 Push Pull Design
  151. restoring mullard valve paint
  152. Mentmore TVA1
  153. DIY in Korea?
  154. Case suggestions for Pye Black Box?
  155. help trouble shooting a problem
  156. Liteaudio 1s37 Phono preamp
  157. All DHT tube amp dream
  158. Suggestion for valve amp kit
  159. Why are directly heated rectifiers still popular?
  160. Headphone amp with pre out
  161. wish to buy 10's or other tungsten DHT's
  162. Audio Innovations Series 300 II -red plate
  163. 811 heater power supply...
  164. Bijou schematics question (PINs)
  165. Looking for a proficient tube tech in New England.
  166. hybrid amplifier using EF86
  167. Looking in San Diego....
  168. Ground of tube headphone amp
  169. Input Transformer Question
  170. Low imp tube headphone diy amp
  171. Cathode Follower as DAC Output Stage?
  172. Monoblock Gu-50 help.
  173. Aikido CF question
  174. Tube Power Amp Kit Recommendations
  175. EL34,KT66,6L6GC,KT77:who works better with high impedance OT load in SE Triode Mode?
  176. ECC40 Voltage Question
  177. Question re DC coupling vs RC coupling (AC)
  178. Measuring ripple in filament supply (coleman reg)
  179. What about use largest possible capacitor as interstage decoupling ( 1 or 2uf)
  180. replace 6N3 tube preamp with mullard E555L
  181. Preamp to Poweramp tube proximity/spacing?
  182. List of Tube Noise Measurements - please nominate lowest noise tubes
  183. Just for interest
  184. Time to build the big one.
  185. Opinion? Would the input/driver from a HK-5 be good to replace original Mk3 ft. end??
  186. Has anyone built this kit?
  187. mu-follower with output transformer?
  188. ECC81 double triode tubes flashed brightly when switched on.
  189. pre amp with tone controll
  190. Making own hifi tube amp from scratch!!
  191. Pentode CCS as a load for long tailed pair?
  192. E88CC & 6N23P plate voltage range?
  193. First pre phono design [newbie]
  194. Struggling with LTspice - How to use .inc to get a tube to appear
  195. Eico St 40
  196. ECC88 Input/driverstage for F4 amp
  197. Tube headphone amp
  198. Acquired free brand new Jolida 302a
  199. Help with restoration of Audio Research equipment
  200. Grommes 103gt tuner
  201. Frank’s 6SN7 pre & regulated supply
  202. Sleeping giant
  203. hum by mounting powertransformer and tubes on same chassis
  204. Rectifier tube overheating
  205. "World's Best Technical Master Craftsmen"
  206. OPT for 2A3
  207. getting rid of pre amp in a tube amp
  208. A question on OPT and no loads.
  209. Auto-Bias vs Manual bias vs EFB
  210. Russian receiving tubes and foreign equivalents
  211. B+ delay timer module
  212. Testing DIY triodes
  213. Adding a dummy load to prevent amp from being damaged by having no load?
  214. 30 watt class A chopper controlled bias with 6 EL84
  215. Input resistor (What are purposes?)
  216. Posted new 300B push-pull amp design
  217. Help me source a pair of OPT for Knight KG-240 tube amp
  218. Help Pick Transformers for EICO HF-87
  219. PreAmp
  220. Original price of the Conrad Johnson PV-5
  221. balance pots in Williamson driver stage
  222. Another Question on Tektronix Transformers
  223. Philco K1629 Upgrade Options
  224. My return to tubes, via headphones - what circuit would you recommend?
  225. High Quality EL84 UL SE Amplifier
  226. regulated supply to CCS plate load
  227. Twin Audio Sinfonia Preamp
  228. ecll800 schematic confusion
  229. 6L6 recommendations
  230. tube 100th
  231. Luxman OY15-5k OPT?
  232. Has anyone had experience with Russian 5C8S and 5C9S?
  233. New Here looking for info on rare SVIKO russian made 6KG6 monoblocks
  234. EL 84 pp amp - simple regulated circuit sought
  235. Any tube amp to drive B&W 802D?
  236. New to valve amplifiers
  237. SE 6GW8 output transformer with 5 wires.
  238. Mr.Curwen's single ended adventures
  239. Tube magic eye with em84-sensitivity?!
  240. Tube test
  241. Brimar 6V6 USSR
  242. World Design KT88 Kit
  243. Opinions appreciated: Lafayette LA 224b vs. McIntosh 225
  244. Clone X10D problems distortion / saturation ... help!
  245. 12DW7 or 12AU7+12AX7 if stereo?
  246. First preamp and gain control
  247. Tube life..
  248. Berman 76 preamplifier, I need some advice please
  249. Old Tube amp missing tubes. HELP
  250. Going to Berlin, looking for electronics diy shops

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