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  1. Schottky diode bias
  2. ACROSOUND direct-couple EL84 amplifier question
  3. RH807 CCS loaded
  4. Audio Note Kit 1 PSU question
  5. New kt88's or 6550
  6. Bias Supply resistors
  7. Incredible source for used transformers and parts!
  8. Reclaimed Hammond H100 PSU's
  9. Arc Vt-60 Cloned :-)
  10. First Time Pre Amp Build
  11. 845 - Progress so far
  12. Nube challange12AX7 to drive 6C4
  13. 7th harmonic distortion from PP pentodes depends on bias?
  14. West Output Transformers?
  15. Help me design my DAC/Line Preamp.
  16. Hybrid preamp tube problemHi,
  17. Building RH84 SE tube amp.
  18. Question - THD Measrement/Spectrum Analyzis
  19. What to do with TMC tube radio gear?
  20. Easy & Safe & Good sounding gainclone tube buffer
  21. Compactron (31AL10) Head-Scratcher
  22. What cable do you use from input socket to volume pot
  23. problem with 12AE6A buffer
  24. Parafeed dc blocking/coupling cap help
  25. Funky Looking 15DQ8s
  26. 12SN7 vs 7N7 bs 6SN7
  27. Correct Pins For EL84 Triode Strap
  28. Dimensions for anode cap sizes?
  29. Mains transformer help needed please
  30. Tone Stack Challenge
  31. Aikido 6SN7 input 5687 output
  32. FRANK"S 6SN7 preamp/linestage
  33. Pentode grid question...
  34. Hybrid fullwave rectifier
  35. 300B stereo amp project help
  36. EdcorEurope
  37. Can AC wires induce hum in output transformers?
  38. Would you use a 4 ohm tap with these speakers?
  39. Changing grid leak bias preamp to cathode bias
  40. 304tl se amp
  41. 5687 Srpp
  42. Dumb Question Brain is numb today!
  43. What a Deal!
  44. MeiXing MC-805AA biasing
  45. whats a good diy tube preamp kit
  46. SimpleSE parts list
  47. Matched tubes or not matched
  48. wood gnomes really do live in france
  49. Pathos Classic one
  50. A Uk supplier of valve amp kits
  51. Detached getter?
  52. 12B4 Line Stage Amp
  53. How do I control volume on Dynaco ST-70?
  54. A few questions from a total novice.
  55. RCA preamp modification
  56. Bogen Challenger CH8 conversion...newb needs help!
  57. 6AU6A - Micropowered tube amp
  58. Yet another DHT filament supply
  59. where to find 5998 ?
  60. Mcintosh MA 2275 Schematic Required
  61. Help on sonic frontier sf line 1 preamp
  62. Voice of Music Reel-Reel schematic needed
  63. Old radio tubes
  64. Bleeders values and ratings
  65. Tube audio circuit analysis
  66. Audio Research LS15 circuit and description
  67. OPT Trafo
  68. OPT test data?
  69. looking for the top 6080 amp schematics
  70. vu meter
  71. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  72. First Amp Build....!
  73. Will This work?
  74. building a lit up tube display
  75. Push-Pull 6CL5's
  76. 2A3 power adjustments by channel
  77. Dead 12ax7 gain stage - Help...
  78. Best 300B amp schematics
  79. Stuck on Standby
  80. Newbee wants to learn about tube amps, etc...
  81. Recent Ad on Craig's List
  82. Pitfalls to warmup delay in DC coupled multiple railed amps?
  83. jan 6832 sub miniature tube
  84. Anti-Triode SEPP, how to do best?
  85. Some Help with Feedback Please!
  86. Cary 300SEI, likely capacitor failure
  87. Ballast Tube Current Source
  88. Ray Lumley m100 schematic needed
  89. Feedback question
  90. CMRR from parallel heaters?
  91. bevois valley clone from eico hf-12 iron..
  92. 27/37/56/76 plate dissipation
  93. Bell 2420 Amplifier Schematic Needed...
  94. How It Works Video
  95. Have I got this right?
  96. any simple circuits I can add to a dac?
  97. neg feed back into v/slope stereo 2 pre-amp
  98. Using 12AX7 as input with feedback
  99. My first power supply
  100. Unknown tube similar to px4
  101. Anyone know of some ridiculously powerful triodes for class A useage?
  102. Bias Voltage
  103. Looking for tubes in Germany
  104. Substituting GU50 tubes for KT88
  105. Parts mined from an AKAI 1800L, what to do?
  106. Has anyone built this amp??????
  107. Output transformers bandwidth/frequency range
  108. Which power supply would you use?
  109. Mullard Articles
  110. SimpleSE - motor run cap specs
  111. Can I reverse leads on an OT?
  112. 9 pin version of a 6SJ7?
  113. 6550 stock ?
  114. Fisher Tube Tuner Restoration Walkthrough
  115. Futterman H-3
  116. simple 6080/6as7 ppp/circlotron project
  117. My unbalanced preamp problem
  118. Gu50
  119. Any Simple CX310 SE schematics around?
  120. Two EI Power Transformers Orientation?
  121. Question on Hybrid Bridge using 5AR4
  122. Recommend a project for a n00b
  123. Help! el34 8pin to 7pin conversion
  124. Converting Yarland FV-34AIII to Triode and Zero NF
  125. 5U4GB PS question
  126. 6X8 Pentode/Triode Musings
  127. DDD mfg co High Voltage power supply?
  128. Mistake on OPT connections : have I damaged something ?
  129. Looking for Jim Morrison Siren Song preamp schematic
  130. cap question....
  131. Ming Da MC368-B90
  132. single tube to drive 300ohm headphones
  133. Negative Feedback?
  134. Possible to convert an oscilloscope into a tube amp?
  135. "Junkbox" 2A5 SE
  136. Power supply testing
  137. Tubeamp power supply - LC question
  138. tube amp coupling cap - audiospace
  139. Radford pentode-triode LTP splitter
  140. Tube bias testers, your opinions, please.
  141. Just saw this and thought I'd pass it along. . .
  142. 6KG6-EL509-EL519 Schematics wanted
  143. Difference between SE output transformer and push-pull output transformers
  144. Sourcing OPTs in Australia
  145. Is there a LOCTAL equiv to a 6V6?
  146. 10m45s LTspice model
  147. What circuit and tube to be used
  148. experimental 6L6G / 6BG6G amp design brainstorm
  149. 29GK6 heater current?
  150. Mr Liung schematics
  151. Want to build tube amp
  152. Back to back transformers.
  153. Using Battery for 300v B+ ?
  154. Anyone recognice this RIAA?
  155. Power cord replacement
  156. Negative LTP CCS supply
  157. c-j pre amp blowing tubes?
  158. first amp build
  159. Tube Mic Preamp - which Edcor transformer?
  160. Scaling the SLCF for other voltage - help
  161. Question about Allied & Hammond Power Transformer Ratings
  162. Education
  163. Bias Ground
  164. Suggestions for RIAA preamp?
  165. External Test Points
  166. 12aY 7 preamp out
  167. 3B7 Loctal DHT
  168. Aikido All in One line stage amp PCB
  169. SS power supply.
  170. 6AU6 pentodes
  171. Parafeed with NP electrolytic?
  172. Charlie K - RIP
  173. Need some advise with a hum problem
  174. IN18 nixies
  175. Quality of S5's K-12G in proposed system
  176. Transformer volume control questions.
  177. Power transformer star ground
  178. Shielding and chassis
  179. Side project - d3a and 6c41c
  180. Cathode-heater leakage
  181. Bell 2122 volume drop off
  182. -500V Maida regulator inquiry
  183. 7591 is glowing RED
  184. Hum problem
  185. Need PS schematic for Musical Machine
  186. Polystyrene capacitor as coupling in output tube stages
  187. Help needed with 10M45S integration .
  188. The daunting world of tubes (where to start)
  189. help 124.3 vac
  190. Bat VK3i buzzing noise
  191. Audioromy FU13 (813) diagram and mods
  192. any complete schematic for 6ak5?
  193. Weird fuzz from Aikido Pre, HELP!
  194. Question about tube amplifier.
  195. 811a rating question
  196. Anode chokes DIY?
  197. Needed: transformer core materials cobalt nickel
  198. Anybody from Italy - please help
  199. Bogen AP35 amp problem
  200. Question about a VR screen supply
  201. DIY Amp Contest in Japan
  202. Hot 5AR4/GZ34 arcing on powerup surge?
  203. Rh84 Ptx
  204. Buzz. Grounding-related?
  205. 50/60Hz Hum - Your Expert Opinion Please
  206. Static Gm test
  207. High Voltage negative regulators
  208. where do i find old tube car radio schematics?
  209. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  210. Weird EH12AY7 Problem
  211. ECC8100 and ECC2000
  212. DHT experts, i need your help
  213. transformers
  214. Vetruvio class-A
  215. PP to balanced input
  216. KT88 AB2 Experiences
  217. Group buy pulse check for Pete Millett tube crossover PCB
  218. Calculating operating point of a DHT
  219. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  220. McIntosh MC-3500 Schematic Information
  221. Use 2X SE output transformers fo 1x PP
  222. 12B4a spice model.
  223. recommended a tube amp for Celestron Studio Ditton 66's
  224. Help needed with bias circuit
  225. How to bias DH dual triodes?
  226. Any of these tubes good for audio applications?
  227. DIY AN M7 need help !!!
  228. Need schematic for Bell 2420 amp
  229. new SimpleSE build
  230. My Citation II Rebuild
  231. KT88 cathode resistors?
  232. Dynaco ST35 boards
  233. Triode strapping a 6V6 (or any tetrode/pentode, really)
  234. ECC 83 + ELL 80 maybe?
  235. need amp suggestions please.
  236. Phase splitter which tube?
  237. WANTED: 12B4A tubes
  238. re-stacking an output transformer
  239. A directly heated triode or Pentode SE amp on a Budget
  240. Annoying high frequency ringing from my 832 tube amp
  241. 30 Amp Knobs
  242. A question about audio interconnects for the ones here with such knowledge.
  243. Hi-end GM70 amplifier with only 2 stages
  244. Paragon
  245. Idea(s) for simple HV regulated psu
  246. NOS Philips "miniwatt/dario" tubes
  247. Hybrid Class D with 6n6p tubes
  248. Any ideas how to estimate VA or mA of Power Tranny
  249. 6L6 Grid resistors??
  250. HeathKit W-2: Missing Tube

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