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  1. Help with ne-2 lamp in my tube tester!!
  2. Looking for a SRPP Calculator
  3. Snubber at primary SE
  4. JJ ECC802 grid current
  5. Tube Regulator Current Limiting Resistor?
  6. What tube
  7. 6AH4 Preamp Help
  8. B&K 650 signal voltage cal
  9. Testing on latest PP 300B build
  10. Book - Audiophile Vacuum Tube Amplifiers -
  11. Fusion Postmodernism and push tube amps 6SN7 + 26 45
  12. 6GE5 Triode
  13. Any plans to build a 100W per channel power amp?
  14. voltage drops HELP
  15. 2in1 headphone amp
  16. DIY Tube Amp with phono
  17. active loading and point to point
  18. Which tubes are having biggest influence on sound (not power)?
  19. Using epoxy to add mechanical strength to solder joints
  20. Output Transformers in series
  21. Trying to ID maker of O/P Transformers from 'Fuji-Star' tuner
  22. Dynaco Gear or Marketing?
  23. Help me ID these tubes
  24. BOC amp BP-40-k schematic
  25. Bias Schematic
  26. Filtering of DC volts?
  27. Motorola Stereophonic
  28. Helping a newbie break the code...
  29. Additional help.
  30. Help with tube ID.
  31. First build! Heater supply question
  32. Reasonable derating for a power transformer ?
  33. Information wanted on an old amp
  34. Quick question about heater voltage
  35. ECC83 Phase Splitter Voltages
  36. Bias Probe Question
  37. Vintage parts to new amp
  38. Converting all unbalanced connections to balanced
  39. ACF-2 Build
  40. Frequency dependent power rating; OPT se
  41. 6L6 SE AMP
  42. Need to know some kind of found tubes
  43. Sansui 1000a opt max current question
  44. 12U7 - any users out there?
  45. 6GW8 Tube Test Data Needed
  46. 832A headphone amplifier
  47. Help with el84 valves
  48. Tube Preamp philips Mullard
  49. ecc99 2a3
  50. Chinese amp Oscillation
  51. tube regulators
  52. Storing spare tubes
  53. Best way to re-apply text to vintage amp chassis?
  54. B&K 747 troubleshooting
  55. Technical questions: understanding "El Cheapo Grande"
  56. Another Approach to Totem Pole OTL Amplifier
  57. Dynaco ST-70 vs.... ????
  58. Tube rectifiers also need snubber capacitors?
  59. HV regulator design - opinions?
  60. 4E27 / 8001 transmitting tube
  61. testing WE 420A / 5755
  62. String LEDs on long tail pair?
  63. SMPS Tube kit - Interested?
  64. tung-sol 7236
  65. PT Failed Winding
  66. ID for an AMprex something...
  67. Help with floating AC heaters (please)
  68. parallel secondaries, both with center taps
  69. Eico ST 40
  70. Opt primary impedance for audionote M10 phono pre
  71. Sansui AU-70 hum in one channel
  72. Pye HF25 Monoblocks
  73. Magnavox 6V6 circuit and output transformers.
  74. 13.8 volt smps for a kt120 SE amp???
  75. EL84 custom monoblocks
  76. Little Bear pre amp valuable find...
  77. ECL8? Is this the proper name of this tube?
  78. EL 502 / EL 511
  79. Used too weak diode, fuse blew.
  80. My first ever vacuum tube amplifier :)
  81. ATS25N -- Any use for audio ??
  82. Maggie 9300 Amp Problem
  83. Musicmaster 6AQ5A socket
  84. 6922 or 12AX7
  85. nobsound amp
  86. New project: pre and power mono, what to build?
  87. Radford bias: options for ultralinear output
  88. Class D Amplifier -- building blocks
  89. HT windings with no CT
  90. Dynaco st 70 resistor
  91. Older Conrad Johnson or new something else
  92. Power supply dummy load
  93. Micro-power, micro cost amp with Rod-Tubes, 1P24B-V
  94. A bit of fun with archaic converters
  95. DOUK 5670+6AQ5+6E2 push-pull merge Class AB tube amp HIFI amplifier DIY KIT
  96. Counterpoint SA-5.1 with dead channel
  97. need safety advise - speaker output ternimals
  98. Marantz 8B Replica Build
  99. Why Gold Grids
  100. "Shiny Eyes" PSE 300B
  101. PCB layout for Valves
  102. rogers cadet mkiii
  103. Direct-Coupled Tube (or Tube-MOSFET) Headphone Amp Circuit
  104. My GM70 amp...separating the input+driver from the output stage
  105. My Quad II and 22 restoration
  106. Help with an OTL CV3618 amp design
  107. stancore NOS power transformer Picture
  108. Choosing a tube amplifier to build, HELP needed
  109. FB circuit for a Maggie 175 with Edcor UL OT's
  110. Gary Lays it on the Line (Classic Output XFMRs)
  111. Info needed on adding subwoofer to tune amp
  112. Help me understand this 7189A SE tube amp?
  113. uTracer Users: Could you trace Western Electric 436A, 448A tubes ?
  114. Tube amp project for 4 ohm speakers
  115. Wouldn't equal plate V + screen V = triode mode?
  116. 866A, 3B25 LTSPICE models
  117. 6HB6 as finals
  118. Leak OP Transformer Mod - Assistance please
  119. strange noise from tube line amp
  120. 6a6 tube as power output in headphone amp
  121. Mullard 6-7 stereo valve amp rebuild
  122. tube regulator for B+
  123. Yet another HV regulator
  124. Opinions on Clamping a ring-of-two bias-block in cathode of EL84
  125. Odd stabilized HV power EF86 + EL84
  126. NL710, 6011
  127. Somebody can identify this tube?
  128. Bullet proof driver circuit
  129. Need Grounding Advice for my System
  130. Use the chassis as the heatsink - Need safety advise
  131. Kofi's Tetra Sans
  132. Spice Simulation of NFB Amp with embedded PF
  133. Simplicity or complexity?
  134. 6N16B Aikido
  135. How to test a power supply
  136. Buying tubes in Bulgaria
  137. Input Trafo MFG reviews needed
  138. A cautinary tale.
  139. HELP! Hybrid Rectifier PSU with 2 Diodes und 2 TV-Dampers 6CG3
  140. ecc99-2a3:opinion
  141. AutoCAD tube/valve blocks
  142. Step By Step Journal Of My TubeLab SSE build
  143. Triode troubles
  144. Safe PSU capacitor values for old Dyna amp?
  145. KT88, 6550 SE Triode Strapped Performance.
  146. Dynaco A431 OPTs
  147. Gingertube's 'bias-block' EL84 Heatsunk MJE340?
  148. SST-70 w/KT-150's mono's build
  149. Error Correction?
  150. Tube amp issue
  151. 4x6N3 preamp board from ebay
  152. time delayed LED for heater
  153. Aikido PSU decisions
  154. coupling caps for RCA rebuild
  155. Recommended coax
  156. Adding solid state bass to valves
  157. Incompatibility between Aikido Pre and Tubelab SimpleSE
  158. What power amp design would suit Esoteric MG-20?
  159. PL36 (triode) SE
  160. Any thoughts on this?
  161. BAT VK 55 paralleled
  162. Looking for a good phono preamp schematic.
  163. Nice diy from Poland
  164. Unballancer humming in one channel
  165. 6S19P tubes instead of 7233 tubes.?
  166. Looking for good stereo amp <$350 - help
  167. Question on EL84 SE triode with CCS at cathode
  168. Convert choke loaded 12b4 to CCS and retain od3's
  169. What can I make with these?
  170. 12AT7 LTP Calling Eli Duttman
  171. Book Help, Please?
  172. Amplifier class A EL34
  173. ps audio hybrid tube buffer
  174. FS: Copper chassis, OPT and Power Xfmrs
  175. Negative Feedback Amplifier with embedded Positive Feedback Booster
  176. Looking for a single ended amp.
  177. EF39 as 300B driver...
  178. How is Electro Harmonix 6922 sonicly compared to NOS?
  179. Tube amp driving a Subwoofer
  180. Leak Stereo 20 Power Supply Choke?
  181. help me read circuit: broski 300b shunt reg
  182. CCS current regulators for OP valves
  183. 1930's push pull field coil amplifier
  184. Loudness and power and volts
  185. Opinions; big mess or have potential?
  186. Star grounding
  187. High NFB OTL headphone amp
  188. Any technical advantages of almost floating grounds?
  189. Twisted power cables
  190. Output transformer
  191. 12AU7 Tube Line Pre-amp on Ebay
  192. Would you run these at say 1200vdc?
  193. MOSFET equivalent
  194. 6BY5 GA full wave rectifier replacement
  195. ID those parts - trafo
  196. Sweeps in class A
  197. Preamp valve rectified power supply
  198. Grommes Precision S-35 - Worth playing with?
  199. 6922 or E88CC in the Rode NTK Mic
  200. What the hell caused this?
  201. 6SN7 Aikido White Follower - Spice simulation
  202. Need to build a moving coil stage
  203. You guys and gals recognize any of this equipment?
  204. Help with first amp design, SET no feedback hp amp
  205. LTSPICE problems with 10Y model
  206. 5876 tube
  207. P2P wiring and cable types
  208. Claus Byrith 4-30: missing valve in the PCB?
  209. KR T1610 PP amp building
  210. Pls Help me Identify these Tubes!
  211. measuring output transformer primary impedance
  212. Unusual output transformer Triad
  213. Input transformer differences
  214. Faint buzz through power stage (845)
  215. Pros and Cons of 3rd Stage in SE (6AV5/2A3 drive requirements)
  216. Star grounding - wooden box
  217. R601P Tube Radio
  218. analog metric el34 se amp
  219. EL34 PP amplifier suggestions
  220. 6AU6 Triode Mode
  221. Another GM70
  222. newbie amp question.
  223. Push-Pull Plate Choke from Edcor?
  224. Finalizing 300B Amps==Please Comment
  225. Help!!!
  226. Controlling gain in VA stage
  227. 833 Push Pull Design
  228. restoring mullard valve paint
  229. Mentmore TVA1
  230. DIY in Korea?
  231. Case suggestions for Pye Black Box?
  232. help trouble shooting a problem
  233. Liteaudio 1s37 Phono preamp
  234. All DHT tube amp dream
  235. Suggestion for valve amp kit
  236. Alps black beauty inductive?
  237. Why are directly heated rectifiers still popular?
  238. Headphone amp with pre out
  239. wish to buy 10's or other tungsten DHT's
  240. Audio Innovations Series 300 II -red plate
  241. 811 heater power supply...
  242. Bijou resistors specs
  243. Bijou schematics question (PINs)
  244. Looking for a proficient tube tech in New England.
  245. hybrid amplifier using EF86
  246. Looking in San Diego....
  247. Ground of tube headphone amp
  248. Input Transformer Question
  249. Low imp tube headphone diy amp
  250. Cathode Follower as DAC Output Stage?

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