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  1. 12B4 Line Stage Amp
  2. How do I control volume on Dynaco ST-70?
  3. A few questions from a total novice.
  4. RCA preamp modification
  5. Bogen Challenger CH8 conversion...newb needs help!
  6. 6AU6A - Micropowered tube amp
  7. Yet another DHT filament supply
  8. where to find 5998 ?
  9. Mcintosh MA 2275 Schematic Required
  10. Help on sonic frontier sf line 1 preamp
  11. Voice of Music Reel-Reel schematic needed
  12. Old radio tubes
  13. 6KN6-PP-guitar slave
  14. Alpha Pots
  15. Bleeders values and ratings
  16. Tube audio circuit analysis
  17. Audio Research LS15 circuit and description
  18. OPT Trafo
  19. OPT test data?
  20. looking for the top 6080 amp schematics
  21. vu meter
  22. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  23. First Amp Build....!
  24. Will This work?
  25. Simple SE hookup wiring
  26. building a lit up tube display
  27. Push-Pull 6CL5's
  28. 2A3 power adjustments by channel
  29. Dead 12ax7 gain stage - Help...
  30. Best 300B amp schematics
  31. Stuck on Standby
  32. Newbee wants to learn about tube amps, etc...
  33. Recent Ad on Craig's List
  34. Pitfalls to warmup delay in DC coupled multiple railed amps?
  35. jan 6832 sub miniature tube
  36. Anti-Triode SEPP, how to do best?
  37. Some Help with Feedback Please!
  38. Cary 300SEI, likely capacitor failure
  39. Ballast Tube Current Source
  40. Ray Lumley m100 schematic needed
  41. Feedback question
  42. CMRR from parallel heaters?
  43. bevois valley clone from eico hf-12 iron..
  44. 27/37/56/76 plate dissipation
  45. Bell 2420 Amplifier Schematic Needed...
  46. How It Works Video
  47. Quad II build for guitar
  48. Have I got this right?
  49. any simple circuits I can add to a dac?
  50. neg feed back into v/slope stereo 2 pre-amp
  51. Using 12AX7 as input with feedback
  52. My first power supply
  53. Unknown tube similar to px4
  54. Anyone know of some ridiculously powerful triodes for class A useage?
  55. Bias Voltage
  56. Looking for tubes in Germany
  57. Substituting GU50 tubes for KT88
  58. Parts mined from an AKAI 1800L, what to do?
  59. Has anyone built this amp??????
  60. Another TubeLab SimpleSE Build
  61. Output transformers bandwidth/frequency range
  62. 6g6 preamp B+ at 400+????
  63. Which power supply would you use?
  64. Mullard Articles
  65. SimpleSE - motor run cap specs
  66. Can I reverse leads on an OT?
  67. 9 pin version of a 6SJ7?
  68. 6550 stock ?
  69. Fisher Tube Tuner Restoration Walkthrough
  70. Futterman H-3
  71. simple 6080/6as7 ppp/circlotron project
  72. My unbalanced preamp problem
  73. Gu50
  74. Any Simple CX310 SE schematics around?
  75. Peavey "Super Festival" VTA-400 - upgrading to 400W?
  76. Two EI Power Transformers Orientation?
  77. Question on Hybrid Bridge using 5AR4
  78. Recommend a project for a n00b
  79. Help! el34 8pin to 7pin conversion
  80. Converting Yarland FV-34AIII to Triode and Zero NF
  81. 5U4GB PS question
  82. 6X8 Pentode/Triode Musings
  83. DDD mfg co High Voltage power supply?
  84. Mistake on OPT connections : have I damaged something ?
  85. Looking for Jim Morrison Siren Song preamp schematic
  86. cap question....
  87. Ming Da MC368-B90
  88. single tube to drive 300ohm headphones
  89. Negative Feedback?
  90. Capacitor voltage ratings
  91. Possible to convert an oscilloscope into a tube amp?
  92. "Junkbox" 2A5 SE
  93. Power supply testing
  94. Tubeamp power supply - LC question
  95. tube amp coupling cap - audiospace
  96. Radford pentode-triode LTP splitter
  97. Tube bias testers, your opinions, please.
  98. Just saw this and thought I'd pass it along. . .
  99. 6KG6-EL509-EL519 Schematics wanted
  100. Difference between SE output transformer and push-pull output transformers
  101. Sourcing OPTs in Australia
  102. Is there a LOCTAL equiv to a 6V6?
  103. 10m45s LTspice model
  104. What circuit and tube to be used
  105. experimental 6L6G / 6BG6G amp design brainstorm
  106. 29GK6 heater current?
  107. Bench PS: stacking DC supplies
  108. Mr Liung schematics
  109. Want to build tube amp
  110. Runaway bias on Hot Rod Deville
  111. Back to back transformers.
  112. Using Battery for 300v B+ ?
  113. Anyone recognice this RIAA?
  114. Power cord replacement
  115. Negative LTP CCS supply
  116. c-j pre amp blowing tubes?
  117. first amp build
  118. Tube Mic Preamp - which Edcor transformer?
  119. Scaling the SLCF for other voltage - help
  120. Question about Allied & Hammond Power Transformer Ratings
  121. Education
  122. Tubelab SE with a 6BX7 to drive 845s
  123. Bias Ground
  124. Suggestions for RIAA preamp?
  125. External Test Points
  126. b2spice model request
  127. 12aY 7 preamp out
  128. 3B7 Loctal DHT
  129. Aikido All in One line stage amp PCB
  130. SS power supply.
  131. 6AU6 pentodes
  132. Parafeed with NP electrolytic?
  133. Charlie K - RIP
  134. Need some advise with a hum problem
  135. What resistor should I use?
  136. IN18 nixies
  137. Tubelab SE build and power supply questions.
  138. Quality of S5's K-12G in proposed system
  139. Gibson EH 150 restoration
  140. Transformer volume control questions.
  141. Power transformer star ground
  142. Shielding and chassis
  143. Side project - d3a and 6c41c
  144. Cathode-heater leakage
  145. Bell 2122 volume drop off
  146. -500V Maida regulator inquiry
  147. 7591 is glowing RED
  148. Hum problem
  149. Need PS schematic for Musical Machine
  150. Polystyrene capacitor as coupling in output tube stages
  151. Help needed with 10M45S integration .
  152. Ultrasonic Cleaning??????
  153. The daunting world of tubes (where to start)
  154. help 124.3 vac
  155. Bat VK3i buzzing noise
  156. Audioromy FU13 (813) diagram and mods
  157. any complete schematic for 6ak5?
  158. Weird fuzz from Aikido Pre, HELP!
  159. Question about tube amplifier.
  160. 811a rating question
  161. Anode chokes DIY?
  162. EI laminations in Europe
  163. Needed: transformer core materials cobalt nickel
  164. Anybody from Italy - please help
  165. Bogen AP35 amp problem
  166. Question about a VR screen supply
  167. DIY Amp Contest in Japan
  168. Hot 5AR4/GZ34 arcing on powerup surge?
  169. Rh84 Ptx
  170. Buzz. Grounding-related?
  171. 50/60Hz Hum - Your Expert Opinion Please
  172. Static Gm test
  173. High Voltage negative regulators
  174. where do i find old tube car radio schematics?
  175. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  176. capacitors
  177. Wire Types
  178. Weird EH12AY7 Problem
  179. Pot and knob compatability
  180. ECC8100 and ECC2000
  181. DHT experts, i need your help
  182. transformers
  183. Vetruvio class-A
  184. PP to balanced input
  185. KT88 AB2 Experiences
  186. Group buy pulse check for Pete Millett tube crossover PCB
  187. Calculating operating point of a DHT
  188. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  189. McIntosh MC-3500 Schematic Information
  190. Use 2X SE output transformers fo 1x PP
  191. 12B4a spice model.
  192. Help identifying a capacitor
  193. recommended a tube amp for Celestron Studio Ditton 66's
  194. Help needed with bias circuit
  195. 220 Mega Ohm Resistor - Really
  196. How to bias DH dual triodes?
  197. Any of these tubes good for audio applications?
  198. DIY AN M7 need help !!!
  199. Need schematic for Bell 2420 amp
  200. new SimpleSE build
  201. My Citation II Rebuild
  202. KT88 cathode resistors?
  203. Dynaco ST35 boards
  204. Triode strapping a 6V6 (or any tetrode/pentode, really)
  205. ECC 83 + ELL 80 maybe?
  206. need amp suggestions please.
  207. Phase splitter which tube?
  208. WANTED: 12B4A tubes
  209. re-stacking an output transformer
  210. A directly heated triode or Pentode SE amp on a Budget
  211. Annoying high frequency ringing from my 832 tube amp
  212. 30 Amp Knobs
  213. A question about audio interconnects for the ones here with such knowledge.
  214. Hi-end GM70 amplifier with only 2 stages
  215. Paragon
  216. Simple SE with CCS and fixed bias
  217. Idea(s) for simple HV regulated psu
  218. NOS Philips "miniwatt/dario" tubes
  219. Hybrid Class D with 6n6p tubes
  220. Any ideas how to estimate VA or mA of Power Tranny
  221. 6L6 Grid resistors??
  222. HeathKit W-2: Missing Tube
  223. Edcor CXSE25-8-5K Dimensions
  224. Bias Pots
  225. Negative Feedback
  226. scott 299D output transformers?
  227. chocke anode load, please explain me..
  228. Integrated HiEnd Amp
  229. Build M7 line amp
  230. Looking for advice/tips regarding simple SE amplifer
  231. Tube amps from vintage RTR's?
  232. componet upgrade
  233. What is "AA" ?
  234. question about twin triode tubes
  235. Building a preamp - somewhat new to tubes
  236. need some guidance about tube amplifiers
  237. Blackgate FK 10000 uF ??
  238. PT failure dangers
  239. Outer foil k40y-9
  240. sansui 1000a maintenance
  241. filter cap question
  242. add UL tap for 125ese
  243. Bogen D070 Amp - HELP w/ INFO.
  244. Humming asl 2004dt wave pre amp
  245. Cany anyone supply any info. about this amplifier?
  246. Low voltage 845SE with 300B driver
  247. Cabinet Help!!!!
  248. dc heater supply help
  249. gu-29 tube
  250. LTP question