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  1. Sound Valves M60 red plated badly please help?
  2. Old tube Radio Conversion
  3. I need something that will take place of a 5965
  4. Mu Follower Analysis
  5. Looking for advice on selling an expensive tube (WE 274A)
  6. 6EM7 SET Amplifier
  7. El84-6BQ5... NOT!!!! just a lookalike!
  8. How to modify the Little Bear P8 preamp to become an amp?
  9. Differential Shunt Cascode Driver
  10. GZ32 vs ss rectifier
  11. Where do I put the resistor?
  12. been laying low - revisiting a KT88 partial FB amp
  13. An obscure question about triodes, impedance, clipping, and gain
  14. SET Rebuild (Fixed Bias and Rod Coleman DHT Regulators)
  15. ATTN Sy: Why gold grids 2
  16. "el escorpion" line stage, plus 10W B+ flyback supply & mute circuit
  17. Cathode Follower config for Tube DI
  18. Replacing capacitors in a VTL300 power amp
  19. how do I connect a plate amp for subwoofer to tube amp
  20. 6sn7 why the soft clipping.
  21. Yes we need Tone Controls! An outstanding project from 1962
  22. counterpoint sa4 otl
  23. Eico ST40 Kit
  24. Audio output transformer
  25. Thoughts on this schematic actually working.
  26. PSUD2 on Mac
  27. Two-section 500V electrolytic caps for cheap (new production)
  28. I am completely new to tubes.
  29. 2C50 Preamp Schematic
  30. Yet another RH84
  31. Example of Anode Follower (plate follower) with volume ctrl?
  32. Beginner DIY Amp
  33. EF86 Grid/anode triode question.
  34. Tube power supply
  35. Citation II... can't get enough bias!
  36. Auto Radio Tubes
  37. 4 edition valve amplifiers (in London)
  38. Need Help With Screen Switch
  39. Output transformer help
  40. When to use artificial center tap
  41. High end car project- looking for advice
  42. I hate wiring amps!
  43. Silicone tube rings
  44. Quad Audio Digital Potentiometer for Tube Preamp
  45. Looking for grounded grid preamp schematic that use only 12ax7/420a
  46. Someone, please check my plot.
  47. Selecting output transformer for OTL headphone amp
  48. RCA tube preamplifier help
  49. Flickering knocking sound on a push pull EL34 configuration.
  50. Tubes headphone amplifier
  51. Custom tube amplifier builders
  52. New to valve cheap pre-amp tweak help please?
  53. ARC SP-3A-1 Tube Opinions
  54. Has anyone tried a "12AU7 to 6SN7 Adapter"?
  55. 300b filament on pb accumulator
  56. 2K2M Tubes...any use?
  57. GK-71 SE or PP?
  58. Electrolytic capacitors high quality
  59. 6HV5 / CCS - driver project
  60. Getting 60W from 6C33C pushpull
  61. Phono Pre - Chassis layout
  62. Heyco strain relief pliers
  63. RH84 and Electron stream question.
  64. 845 amp.. Now I've got a faint hum..
  65. "Lisa trafo" transformer builder
  66. KT-90 odd behavior
  67. ecc99-2a3
  68. 6SJ7 gain setup
  69. Prototype for 2X 20 Triode
  70. 6n1p preamp schematic
  71. PSU Choke - Valve Phono Pre project
  72. LND150 gyrator for ECC83/12AX7 ???
  73. GU-48 Tube amplifier 833A
  74. OTL with custom 64ohm speakers... Idea in the making
  75. Snap, Crackle, Pop!
  76. What normally causes buzzing?
  77. 690R:8R output transformer
  78. Redplate and Other Questions
  79. Tube wisdom...
  80. 01B thoriated tungsten filaments?
  81. Distortion/Low Signal/Noise from Ampex 620 after being on for 5 minutes?
  82. Max Plate (Boost + DC Supply), what does it mean
  83. It's been a while since I've been here...
  84. Quicksilver Silver Mono Mods
  85. Chinese, Single-Ended, Class A, Questions.
  86. Balanced Aikido Hum
  87. Pentode Tone Control Module
  88. Reason for no output reading and blown tube
  89. Volume control for 24v Aikido pre
  90. First Tube Project
  91. Pentode or triode mode EL84 design suggestions
  92. Question about the need for OPTs for headphone amps
  93. Help with ne-2 lamp in my tube tester!!
  94. Looking for a SRPP Calculator
  95. Snubber at primary SE
  96. JJ ECC802 grid current
  97. Tube Regulator Current Limiting Resistor?
  98. What tube
  99. 6AH4 Preamp Help
  100. B&K 650 signal voltage cal
  101. Testing on latest PP 300B build
  102. Book - Audiophile Vacuum Tube Amplifiers -
  103. Fusion Postmodernism and push tube amps 6SN7 + 26 45
  104. 6GE5 Triode
  105. Any plans to build a 100W per channel power amp?
  106. voltage drops HELP
  107. 2in1 headphone amp
  108. DIY Tube Amp with phono
  109. active loading and point to point
  110. Which tubes are having biggest influence on sound (not power)?
  111. Using epoxy to add mechanical strength to solder joints
  112. Output Transformers in series
  113. Trying to ID maker of O/P Transformers from 'Fuji-Star' tuner
  114. Dynaco Gear or Marketing?
  115. Help me ID these tubes
  116. BOC amp BP-40-k schematic
  117. Bias Schematic
  118. Filtering of DC volts?
  119. Motorola Stereophonic
  120. Helping a newbie break the code...
  121. Additional help.
  122. Help with tube ID.
  123. First build! Heater supply question
  124. Reasonable derating for a power transformer ?
  125. Information wanted on an old amp
  126. Quick question about heater voltage
  127. ECC83 Phase Splitter Voltages
  128. Bias Probe Question
  129. Vintage parts to new amp
  130. Converting all unbalanced connections to balanced
  131. ACF-2 Build
  132. Frequency dependent power rating; OPT se
  133. 6L6 SE AMP
  134. Need to know some kind of found tubes
  135. Sansui 1000a opt max current question
  136. 12U7 - any users out there?
  137. 6GW8 Tube Test Data Needed
  138. 832A headphone amplifier
  139. Help with el84 valves
  140. Tube Preamp philips Mullard
  141. ecc99 2a3
  142. Chinese amp Oscillation
  143. tube regulators
  144. Storing spare tubes
  145. Best way to re-apply text to vintage amp chassis?
  146. B&K 747 troubleshooting
  147. Technical questions: understanding "El Cheapo Grande"
  148. Another Approach to Totem Pole OTL Amplifier
  149. Dynaco ST-70 vs.... ????
  150. Tube rectifiers also need snubber capacitors?
  151. HV regulator design - opinions?
  152. 4E27 / 8001 transmitting tube
  153. testing WE 420A / 5755
  154. String LEDs on long tail pair?
  155. SMPS Tube kit - Interested?
  156. tung-sol 7236
  157. PT Failed Winding
  158. ID for an AMprex something...
  159. Help with floating AC heaters (please)
  160. parallel secondaries, both with center taps
  161. Eico ST 40
  162. Opt primary impedance for audionote M10 phono pre
  163. Sansui AU-70 hum in one channel
  164. Pye HF25 Monoblocks
  165. Magnavox 6V6 circuit and output transformers.
  166. 13.8 volt smps for a kt120 SE amp???
  167. EL84 custom monoblocks
  168. Little Bear pre amp valuable find...
  169. ECL8? Is this the proper name of this tube?
  170. EL 502 / EL 511
  171. Used too weak diode, fuse blew.
  172. My first ever vacuum tube amplifier :)
  173. ATS25N -- Any use for audio ??
  174. Maggie 9300 Amp Problem
  175. Musicmaster 6AQ5A socket
  176. 6922 or 12AX7
  177. nobsound amp
  178. New project: pre and power mono, what to build?
  179. Radford bias: options for ultralinear output
  180. Class D Amplifier -- building blocks
  181. HT windings with no CT
  182. Dynaco st 70 resistor
  183. Older Conrad Johnson or new something else
  184. Power supply dummy load
  185. Micro-power, micro cost amp with Rod-Tubes, 1P24B-V
  186. A bit of fun with archaic converters
  187. DOUK 5670+6AQ5+6E2 push-pull merge Class AB tube amp HIFI amplifier DIY KIT
  188. Counterpoint SA-5.1 with dead channel
  189. need safety advise - speaker output ternimals
  190. Marantz 8B Replica Build
  191. Why Gold Grids
  192. "Shiny Eyes" PSE 300B
  193. PCB layout for Valves
  194. rogers cadet mkiii
  195. Direct-Coupled Tube (or Tube-MOSFET) Headphone Amp Circuit
  196. My GM70 amp...separating the input+driver from the output stage
  197. My Quad II and 22 restoration
  198. Help with an OTL CV3618 amp design
  199. stancore NOS power transformer Picture
  200. Choosing a tube amplifier to build, HELP needed
  201. FB circuit for a Maggie 175 with Edcor UL OT's
  202. Gary Lays it on the Line (Classic Output XFMRs)
  203. Info needed on adding subwoofer to tune amp
  204. Help me understand this 7189A SE tube amp?
  205. uTracer Users: Could you trace Western Electric 436A, 448A tubes ?
  206. Tube amp project for 4 ohm speakers
  207. Wouldn't equal plate V + screen V = triode mode?
  208. 866A, 3B25 LTSPICE models
  209. 6HB6 as finals
  210. Leak OP Transformer Mod - Assistance please
  211. strange noise from tube line amp
  212. 6a6 tube as power output in headphone amp
  213. Mullard 6-7 stereo valve amp rebuild
  214. tube regulator for B+
  215. Yet another HV regulator
  216. Opinions on Clamping a ring-of-two bias-block in cathode of EL84
  217. Odd stabilized HV power EF86 + EL84
  218. NL710, 6011
  219. Somebody can identify this tube?
  220. Bullet proof driver circuit
  221. Need Grounding Advice for my System
  222. Use the chassis as the heatsink - Need safety advise
  223. Kofi's Tetra Sans
  224. Spice Simulation of NFB Amp with embedded PF
  225. Simplicity or complexity?
  226. 6N16B Aikido
  227. How to test a power supply
  228. Buying tubes in Bulgaria
  229. Input Trafo MFG reviews needed
  230. A cautinary tale.
  231. HELP! Hybrid Rectifier PSU with 2 Diodes und 2 TV-Dampers 6CG3
  232. ecc99-2a3:opinion
  233. AutoCAD tube/valve blocks
  234. Step By Step Journal Of My TubeLab SSE build
  235. Triode troubles
  236. Safe PSU capacitor values for old Dyna amp?
  237. KT88, 6550 SE Triode Strapped Performance.
  238. Dynaco A431 OPTs
  239. Gingertube's 'bias-block' EL84 Heatsunk MJE340?
  240. SST-70 w/KT-150's mono's build
  241. Error Correction?
  242. Tube amp issue
  243. 4x6N3 preamp board from ebay
  244. time delayed LED for heater
  245. Aikido PSU decisions
  246. coupling caps for RCA rebuild
  247. Recommended coax
  248. Adding solid state bass to valves
  249. Incompatibility between Aikido Pre and Tubelab SimpleSE
  250. What power amp design would suit Esoteric MG-20?

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