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  1. John Broskie's enhanced T8
  2. Audio Research SP6 E
  3. Andr Charlin anybody got his Tube Amp
  4. Info needed - Shuguang SG120-C Integrated Amp
  5. Help with 6SN7 preamp
  6. 12b4 vs. aikido linestage
  7. KT88/6550 as Triode
  8. 6AU6WA triode connected as a line amp?
  9. A few basic noobie questions.
  10. Which connector for PSU/chassis B+ supply?
  11. Quad II-Forty schematic ?:
  12. Audio Research Manuals
  13. I was thinking
  14. silicon or tube rectifier?
  15. Is this OK for the Etude Preamp?
  16. gary pimm's latest self-biasing CCS circuit
  17. 46 tube pre
  18. BEZ T9B Intermittent problem
  19. Heathkit W-5M rebuild
  20. Masco MA25N repair
  21. Sunday's Project
  22. 5881- 6l6
  23. Gas-Rectifier power supply
  24. How to get more juice out of this shunt regulator
  25. Resistors on DHT Cathode
  26. Noise floor rise on heathkit W4-AMs when power supply transformers were swapped
  27. Help me finish up this SET project (multiple questions / ramblings)
  28. This Is Cool !!
  29. output bias servo
  30. Looking for dual power triodes.
  31. Need advice selecting a 2A3 design
  32. Feedback basics
  33. tubalizer..
  34. The 6b4g
  35. 6N6P Operating Points
  36. Lundahl+EL84 PP+concertina+input stage
  37. Help wanted for a truly loco project. (A Tube--gainclone hybrid guitar amp!)
  38. Looking for circuit of SE amp. for Eimac 100TH
  39. Counterpoint Sa-3000 Circuit Diagram
  40. compressor Faiirchild 670 DIY
  41. How much headroom for a choke---to stop it from humming?
  42. Bay Area Diy Festival
  43. Using Eagle for Tubes designs
  44. Worst that could happen?
  45. Identifying output tx.
  46. Small pre
  47. Cathode follower driver
  48. comment on this B+ supply
  49. ODD TUBES, what to look for?
  50. 2A3 SE and Edcorp tranny
  51. Differential amplifier with 12AX7
  52. Bogen Challenger CH30 Amplifier
  53. do I need to use a heatsink on a DN2540 in a B+ supply?
  54. Transformer, 10K 1:1 - which one?
  55. Where to find Blackgate Caps?
  56. Passive Pre-Amp causes huge power loss?
  57. Rubbish fluorescent tubes: Eterna Lighting (UK), GE (US)
  58. Melos TM90 ST schematic?
  59. My first tube preamplifier:)
  60. Opinions on the Conrad Johnson MV75 amplifier please.
  61. Favorite Tubes
  62. SS replacement for 83 tube ?
  63. AMC CVT 2030 Output Transformer.
  64. 6-ohm speaker to tube amp
  65. What tubes share the pinout with the 5687?
  66. SMPS for B+ discussion
  67. Building a 200W+ bass amp
  68. need help understanding voltage regulator schematic (using CCS) from Raleigh Audio
  69. SS No R No C Power Supply for Tubes
  70. FREDs? Replace 1N4003 rectifier diodes?
  71. Hot running regulated dc filament supply for aikido preamp
  72. B+ TX. overkill?
  73. 33 Power Pentode Design Pointers Needed
  74. What Wiki?
  75. help understanding updated DRD from J Elliano's site (using 6AN4 instead of 6n1p)
  76. Zen SE84TS
  77. 5687 tube
  78. Tube vs. Semiconducter rectification
  79. Bogen CHB35 Mods and Preamp ideas
  80. I Want To Build A 100+Watt per/channel Tube Poweramp
  81. Phonodude problem
  82. enjoythemusic's t-rex amp: where is the +70VDC tap?
  83. Earthing and how it effects sound.
  84. Rectifier question
  85. Help for SE Main Transformer
  86. 6D22S Getter Question
  87. Repair of a McIntosh MC225 power amp
  88. OPA627 with tube buffer....
  89. Bell Stereophonic 3030 help
  90. Choosing the line stage preamp.
  91. I Need Help, Mcintosh/Marantz 7 content
  92. For 45 > 845: selecting an 9.5/ 10 Interstage
  93. How to reduce gain of this Tube Preamplifier ?
  94. looking for pp amp schematic without nfb
  95. Pseudo dual mono PS?
  96. WE404A drive 6L6 solution
  97. Looking for info on loudness control
  98. Tubes and minority carriers
  99. suggestions for 3 projects please
  100. DIY tube preamp kit
  101. M6 lamination: what is it?
  102. why is it that most tube projects uses copper sheetmetal?
  103. Sources in the Philippines / Manila
  104. Tube noise - Help
  105. Strange reverb circuit
  106. Tiny tube amp
  107. DC heating directly heated output valves
  108. Alps 250k in a Pas-3 Question
  109. 1st cap heats up...
  110. RCA VR Tube engineering data
  111. dropping heater voltage
  112. Please Help with Sound Valves M40 Monoblock Bias Adjustment Procedure!!!
  113. Old Sony SE OPT's /w 600r tap... cathode feedback maybe?
  114. Which is the poor man 45 tube?
  115. Audio Note Low Gain Quest Power Amplifier
  116. Quad II: Which resistors?
  117. Designing a preamp with two tubes
  118. ARC Classic 30 problem
  119. Why does the 6AS7 have such high Miller capacitance ?
  120. Driving an unusal Z=1k5-2k input spring reverb w/o tranny
  121. serching 5A6 beam power pentode data/curves/schematics for AF practice amp
  122. HPHV regulator measurement
  123. DHT Topology Comparison Question
  124. Secondary Tap of Power Transformer?
  125. Soft-clipping Circuit/tubecad
  126. lack of bass in a 6h30 design
  127. Difference between two novals
  128. C3g
  129. All Tube Stereo power amplifier
  130. what gas VR tube?
  131. KT88 schematic
  132. Help me understand the topologies here...
  133. Finished my Amp, Need to build a PS
  134. Push-Pull driver stage?
  135. Floating the heaters
  136. Replacing Power Transformer
  137. When car audio & tubes collide...
  138. 6N6P and 6SN7 Operating point suggestions
  139. NOS pF capacitors voltage rating?
  140. Tubes in Vietnam
  141. Passive pre order?
  142. layout help
  143. junkbox amp help
  144. required specs of an input step up transformer, into a 45, to allow it drive an 845
  145. 6as7 SRPP output stage
  146. Bias range and selenium rectifier
  147. OTL's and aircraft transformers
  148. PSE EL34 - valve rectification question
  149. A 2a3 Amplifier
  150. James Transformer BS
  151. Plate Voltage on 12ax7a
  152. Parallel Triodes and Load Lines
  153. Steve Bench OTL
  154. High power P-P EL34/6550/KT88 amp suggestions
  155. Stepped attenuators - break before make?
  156. audionote 144 OPT comment pls...
  157. KT88 and Hammond Transformer Schematics
  158. How do I know that my measured AC voltage is precise?
  159. 6C33B-C push pull with output transformer
  160. EL84 grid voltage?
  161. seperate power supply?
  162. Mysterious tektronix power supply
  163. tube amp subwoofer hum problem
  164. How to test transformer's current rating?
  165. Death/Black Metal sound on Crate 6212
  166. 4654/4699 pentodes
  167. Output tubes on a Marshall JCM900
  168. vacuum tube logic gate
  169. Screen current
  170. Any tube-sleuths out there know who made these Daystrom tubes?
  171. With this meter reading, enough to know Fuse is the culprit?
  172. need comments on amp design
  173. KEF/Celestion speakers for tube use...
  174. Another cheap fix - MOT as plate choke.
  175. XAM Mark II B
  176. How to test voltages on secondaries?
  177. Audio innovation L1 valve replacement
  178. Is this in-rush current?
  179. TETRODE amplifiers
  180. Audio Shop Eifl Corporation
  181. 6sn7 Buffer
  182. Marantz 8b operating voltages
  183. amplifier with 813 valves
  184. Changing plate resistor in live circuitry.
  185. 2xEL34 vs. 4xEL84 vs. 2x6L6 vs. 4x6V6
  186. KT88 drivers
  187. Simple Hybrid SE EL84 UL amp.. comments please.
  188. max input impedance for // el84's and other ?
  189. Please Help.. PCL81
  190. Some troubles with PSUD. A little help please !
  191. Why D getters?
  192. Help me information of the tubes?
  193. Questions about this line stage
  194. 5Z4P rectifier tube question
  195. Need help from Aikido builder
  196. Aikesi_el34҇һ̨
  197. Direct heating triodes are really better?
  198. Audio Reality is back, in digital format
  199. Stoetkit 25W integrated amp
  200. Switchable stages with Tubelabs hybrid MOSFET/ 845 SE amp?
  201. Tube Pre Amplifier for SEWA 7 Watt ClassA MOSFET
  202. Michaelson Audio Odysseus Problem.
  203. ASC metal can polypro caps: ground the metal can to AC ground?
  204. anyone living in australia (hopefully adelaide) willing to lend their puncher/bit?
  205. ReinoutdV
  206. Priboj amp schematic
  207. EL84 in ultra-linear mode
  208. internal shielding
  209. RIAA: what does it stand for?
  210. Socket Mounting Rings
  211. heathkit sa2 - new question
  212. RCA R35, 39 & 57 Terminal Usage...
  213. 45 into an 845 parafeed circuit
  214. Tubes power supply 220 t0 300V ?
  215. ripple values in B+ supply
  216. Capacitors and tubes for AA5?
  217. Dynaco PAS Rebuild
  218. Audio Research SP9 Circuit Diagram HELP!
  219. ARC reference II schematic
  220. 71a Line Stage and Miller Capacitance
  221. Low plate voltage pentode (<40v) for diff pair?
  222. loadlines for newbie.
  223. Measuring approx RMS power O/P
  224. Hybrid Aikido-ish gain stage
  225. Loftin-White coupling Questions
  226. 807 screen regulation
  227. What kills an opt tranny?
  228. EAR529 schematic diagram
  229. World Designs KEL84 Valve Amplifier
  230. what 300B design would you recommend but...
  231. Replacement conductance meter for Hickok 533A
  232. My RIAA Phono Stage Project
  233. A2 Questions
  234. World Audio Design
  235. Seek for your comments/advice to newbie on Tube world
  236. CCSed LTP validity?
  237. Suitability of transmitter tubes for musical amplifiers
  238. Anyone using an 813 in pentode?
  239. Electrolytic in the feedback loop
  240. El34 PP Vs. El34 PSE
  241. RIAA Phono Amp Design
  242. Matching resistors to 1% or Better
  243. Wirewound cathode resistor
  244. Tube Hybrid Amp.
  245. Nasty ground loop
  246. ECC88 Class B
  247. Cree diodes
  248. Old Tube Amp Servicer In Nj???
  249. Vg-k max
  250. Anyone used PT15 / VT104 ?

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