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  1. Help me understand this 7189A SE tube amp?
  2. schematic of KLDguitar hand wired tube guitar amp MOJO 12HR
  3. uTracer Users: Could you trace Western Electric 436A, 448A tubes ?
  4. Tube amp project for 4 ohm speakers
  5. Wouldn't equal plate V + screen V = triode mode?
  6. 866A, 3B25 LTSPICE models
  7. 6HB6 as finals
  8. Leak OP Transformer Mod - Assistance please
  9. strange noise from tube line amp
  10. 6a6 tube as power output in headphone amp
  11. Eureka! Push/Pull vs Single Ended = Clarinet vs Saxophone!
  12. Mullard 6-7 stereo valve amp rebuild
  13. tube regulator for B+
  14. Yet another HV regulator
  15. Opinions on Clamping a ring-of-two bias-block in cathode of EL84
  16. Odd stabilized HV power EF86 + EL84
  17. NL710, 6011
  18. Somebody can identify this tube?
  19. Bullet proof driver circuit
  20. Need Grounding Advice for my System
  21. Use the chassis as the heatsink - Need safety advise
  22. Kofi's Tetra Sans
  23. Spice Simulation of NFB Amp with embedded PF
  24. Simplicity or complexity?
  25. 6N16B Aikido
  26. How to test a power supply
  27. Buying tubes in Bulgaria
  28. Input Trafo MFG reviews needed
  29. A cautinary tale.
  30. HELP! Hybrid Rectifier PSU with 2 Diodes und 2 TV-Dampers 6CG3
  31. ecc99-2a3:opinion
  32. AutoCAD tube/valve blocks
  33. Step By Step Journal Of My TubeLab SSE build
  34. Triode troubles
  35. Safe PSU capacitor values for old Dyna amp?
  36. KT88, 6550 SE Triode Strapped Performance.
  37. Dynaco A431 OPTs
  38. Gingertube's 'bias-block' EL84 Heatsunk MJE340?
  39. SST-70 w/KT-150's mono's build
  40. Error Correction?
  41. Tube amp issue
  42. 4x6N3 preamp board from ebay
  43. time delayed LED for heater
  44. Aikido PSU decisions
  45. coupling caps for RCA rebuild
  46. Recommended coax
  47. Adding solid state bass to valves
  48. Incompatibility between Aikido Pre and Tubelab SimpleSE
  49. What power amp design would suit Esoteric MG-20?
  50. PL36 (triode) SE
  51. Any thoughts on this?
  52. BAT VK 55 paralleled
  53. Looking for a good phono preamp schematic.
  54. Nice diy from Poland
  55. Unballancer humming in one channel
  56. 6S19P tubes instead of 7233 tubes.?
  57. Looking for good stereo amp <$350 - help
  58. Question on EL84 SE triode with CCS at cathode
  59. Convert choke loaded 12b4 to CCS and retain od3's
  60. What can I make with these?
  61. 12AT7 LTP Calling Eli Duttman
  62. Book Help, Please?
  63. Amplifier class A EL34
  64. ps audio hybrid tube buffer
  65. FS: Copper chassis, OPT and Power Xfmrs
  66. Negative Feedback Amplifier with embedded Positive Feedback Booster
  67. Looking for a single ended amp.
  68. EF39 as 300B driver...
  69. How is Electro Harmonix 6922 sonicly compared to NOS?
  70. Tube amp driving a Subwoofer
  71. Leak Stereo 20 Power Supply Choke?
  72. help me read circuit: broski 300b shunt reg
  73. CCS current regulators for OP valves
  74. 1930's push pull field coil amplifier
  75. Loudness and power and volts
  76. Opinions; big mess or have potential?
  77. Premier 90 Reverb Buzzzzz
  78. Star grounding
  79. High NFB OTL headphone amp
  80. Any technical advantages of almost floating grounds?
  81. Twisted power cables
  82. Output transformer
  83. 12AU7 Tube Line Pre-amp on Ebay
  84. Would you run these at say 1200vdc?
  85. MOSFET equivalent
  86. 6BY5 GA full wave rectifier replacement
  87. ID those parts - trafo
  88. Sweeps in class A
  89. Preamp valve rectified power supply
  90. Grommes Precision S-35 - Worth playing with?
  91. 6922 or E88CC in the Rode NTK Mic
  92. What the hell caused this?
  93. 6SN7 Aikido White Follower - Spice simulation
  94. Need to build a moving coil stage
  95. You guys and gals recognize any of this equipment?
  96. Help with first amp design, SET no feedback hp amp
  97. LTSPICE problems with 10Y model
  98. 5876 tube
  99. P2P wiring and cable types
  100. Claus Byrith 4-30: missing valve in the PCB?
  101. KR T1610 PP amp building
  102. Pls Help me Identify these Tubes!
  103. measuring output transformer primary impedance
  104. Unusual output transformer Triad
  105. Input transformer differences
  106. Faint buzz through power stage (845)
  107. Pros and Cons of 3rd Stage in SE (6AV5/2A3 drive requirements)
  108. Star grounding - wooden box
  109. R601P Tube Radio
  110. analog metric el34 se amp
  111. EL34 PP amplifier suggestions
  112. 6AU6 Triode Mode
  113. Another GM70
  114. newbie amp question.
  115. Push-Pull Plate Choke from Edcor?
  116. Finalizing 300B Amps==Please Comment
  117. Help!!!
  118. Controlling gain in VA stage
  119. 833 Push Pull Design
  120. restoring mullard valve paint
  121. Mentmore TVA1
  122. DIY in Korea?
  123. Case suggestions for Pye Black Box?
  124. help trouble shooting a problem
  125. Liteaudio 1s37 Phono preamp
  126. All DHT tube amp dream
  127. Suggestion for valve amp kit
  128. Alps black beauty inductive?
  129. Why are directly heated rectifiers still popular?
  130. Headphone amp with pre out
  131. wish to buy 10's or other tungsten DHT's
  132. Audio Innovations Series 300 II -red plate
  133. 811 heater power supply...
  134. Bijou resistors specs
  135. Bijou schematics question (PINs)
  136. Looking for a proficient tube tech in New England.
  137. hybrid amplifier using EF86
  138. Looking in San Diego....
  139. Ground of tube headphone amp
  140. Input Transformer Question
  141. Low imp tube headphone diy amp
  142. Cathode Follower as DAC Output Stage?
  143. Monoblock Gu-50 help.
  144. Aikido CF question
  145. Tube Power Amp Kit Recommendations
  146. EL34,KT66,6L6GC,KT77:who works better with high impedance OT load in SE Triode Mode?
  147. ECC40 Voltage Question
  148. Question re DC coupling vs RC coupling (AC)
  149. Measuring ripple in filament supply (coleman reg)
  150. What about use largest possible capacitor as interstage decoupling ( 1 or 2uf)
  151. replace 6N3 tube preamp with mullard E555L
  152. Preamp to Poweramp tube proximity/spacing?
  153. List of Tube Noise Measurements - please nominate lowest noise tubes
  154. Just for interest
  155. Time to build the big one.
  156. Opinion? Would the input/driver from a HK-5 be good to replace original Mk3 ft. end??
  157. Has anyone built this kit?
  158. 22 AWG PTFE Wire jacket
  159. mu-follower with output transformer?
  160. ECC81 double triode tubes flashed brightly when switched on.
  161. pre amp with tone controll
  162. Making own hifi tube amp from scratch!!
  163. Pentode CCS as a load for long tailed pair?
  164. E88CC & 6N23P plate voltage range?
  165. First pre phono design [newbie]
  166. Struggling with LTspice - How to use .inc to get a tube to appear
  167. Eico St 40
  168. ECC88 Input/driverstage for F4 amp
  169. Tube headphone amp
  170. Rike Audio S-cap
  171. Acquired free brand new Jolida 302a
  172. Triode vs Transistor
  173. Help with restoration of Audio Research equipment
  174. Grommes 103gt tuner
  175. Frank’s 6SN7 pre & regulated supply
  176. Sleeping giant
  177. hum by mounting powertransformer and tubes on same chassis
  178. Rectifier tube overheating
  179. "World's Best Technical Master Craftsmen"
  180. OPT for 2A3
  181. getting rid of pre amp in a tube amp
  182. A question on OPT and no loads.
  183. Auto-Bias vs Manual bias vs EFB
  184. Russian receiving tubes and foreign equivalents
  185. B+ delay timer module
  186. Testing DIY triodes
  187. Adding a dummy load to prevent amp from being damaged by having no load?
  188. 30 watt class A chopper controlled bias with 6 EL84
  189. THD
  190. Input resistor (What are purposes?)
  191. Posted new 300B push-pull amp design
  192. Help me source a pair of OPT for Knight KG-240 tube amp
  193. Help Pick Transformers for EICO HF-87
  194. PreAmp
  195. Original price of the Conrad Johnson PV-5
  196. balance pots in Williamson driver stage
  197. Another Question on Tektronix Transformers
  198. Philco K1629 Upgrade Options
  199. My return to tubes, via headphones - what circuit would you recommend?
  200. High Quality EL84 UL SE Amplifier
  201. regulated supply to CCS plate load
  202. Twin Audio Sinfonia Preamp
  203. ecll800 schematic confusion
  204. 6L6 recommendations
  205. tube 100th
  206. Luxman OY15-5k OPT?
  207. Has anyone had experience with Russian 5C8S and 5C9S?
  208. New Here looking for info on rare SVIKO russian made 6KG6 monoblocks
  209. DC-DC converters
  210. EL 84 pp amp - simple regulated circuit sought
  211. Any tube amp to drive B&W 802D?
  212. New to valve amplifiers
  213. SE 6GW8 output transformer with 5 wires.
  214. Mr.Curwen's single ended adventures
  215. Tube magic eye with em84-sensitivity?!
  216. Tube test
  217. Brimar 6V6 USSR
  218. Construction Guides
  219. World Design KT88 Kit
  220. Opinions appreciated: Lafayette LA 224b vs. McIntosh 225
  221. Clone X10D problems distortion / saturation ... help!
  222. 12DW7 or 12AU7+12AX7 if stereo?
  223. First preamp and gain control
  224. Tube life..
  225. Berman 76 preamplifier, I need some advice please
  226. How to light GM70 tube as decorative?
  227. Old Tube amp missing tubes. HELP
  228. Going to Berlin, looking for electronics diy shops
  229. 6SJ7 Vs 6Ж8 - Can the russian tube be considered an equivalent tube ?
  230. 6L6G Tung-Sol reissue: sweet sound and delicious night sight, but...
  231. Help with Eico ST70
  232. Class-D and Tube buffer/preamp off same 12V SLA?
  233. Hard time to find High Voltage medium power linear BJT
  234. Gu50 or 1624 PP amp first trials
  235. cathode follower driver A2
  236. High Pass Filter for OTL headphone Amp
  237. Bewitch 6550 Balance Issue
  238. ground hum issues in an old peak st-100
  239. Need an APPJ PA0901A Mini Amp Output Transformer.
  240. VTL Tiny Triode Schematics?
  241. A question of dynamics: Amplifier design?
  242. Rechargeable battery for cathode bias: open discussion
  243. High quality tube socket for 4P1L tube ?
  244. VTL Schematic needed
  245. Diode rating for filament voltage doubler
  246. SE vs PP for SET amps
  247. Use "mu output" from depletion mode MOSFET load?
  248. GM70 SE mov rectifiers
  249. First Preamp build
  250. Fisher KX-200 driving a pair of ESL from the plates

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