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  1. Alpha Pots
  2. Bleeders values and ratings
  3. Tube audio circuit analysis
  4. Audio Research LS15 circuit and description
  5. OPT Trafo
  6. OPT test data?
  7. looking for the top 6080 amp schematics
  8. vu meter
  9. Walkthrough: Pioneer SM-83 Tube Amp Restoration
  10. First Amp Build....!
  11. Will This work?
  12. Simple SE hookup wiring
  13. building a lit up tube display
  14. Push-Pull 6CL5's
  15. 2A3 power adjustments by channel
  16. Dead 12ax7 gain stage - Help...
  17. Best 300B amp schematics
  18. Stuck on Standby
  19. Newbee wants to learn about tube amps, etc...
  20. Recent Ad on Craig's List
  21. Pitfalls to warmup delay in DC coupled multiple railed amps?
  22. jan 6832 sub miniature tube
  23. Anti-Triode SEPP, how to do best?
  24. Some Help with Feedback Please!
  25. Cary 300SEI, likely capacitor failure
  26. Ballast Tube Current Source
  27. Ray Lumley m100 schematic needed
  28. Feedback question
  29. CMRR from parallel heaters?
  30. bevois valley clone from eico hf-12 iron..
  31. 27/37/56/76 plate dissipation
  32. Bell 2420 Amplifier Schematic Needed...
  33. How It Works Video
  34. Quad II build for guitar
  35. Have I got this right?
  36. any simple circuits I can add to a dac?
  37. neg feed back into v/slope stereo 2 pre-amp
  38. Using 12AX7 as input with feedback
  39. My first power supply
  40. Unknown tube similar to px4
  41. Anyone know of some ridiculously powerful triodes for class A useage?
  42. Bias Voltage
  43. Looking for tubes in Germany
  44. Substituting GU50 tubes for KT88
  45. Parts mined from an AKAI 1800L, what to do?
  46. Has anyone built this amp??????
  47. Another TubeLab SimpleSE Build
  48. Output transformers bandwidth/frequency range
  49. 6g6 preamp B+ at 400+????
  50. Which power supply would you use?
  51. Mullard Articles
  52. SimpleSE - motor run cap specs
  53. Can I reverse leads on an OT?
  54. 9 pin version of a 6SJ7?
  55. 6550 stock ?
  56. Fisher Tube Tuner Restoration Walkthrough
  57. Futterman H-3
  58. simple 6080/6as7 ppp/circlotron project
  59. My unbalanced preamp problem
  60. Gu50
  61. Any Simple CX310 SE schematics around?
  62. Peavey "Super Festival" VTA-400 - upgrading to 400W?
  63. Two EI Power Transformers Orientation?
  64. Question on Hybrid Bridge using 5AR4
  65. Recommend a project for a n00b
  66. Help! el34 8pin to 7pin conversion
  67. Converting Yarland FV-34AIII to Triode and Zero NF
  68. 5U4GB PS question
  69. 6X8 Pentode/Triode Musings
  70. DDD mfg co High Voltage power supply?
  71. Mistake on OPT connections : have I damaged something ?
  72. Looking for Jim Morrison Siren Song preamp schematic
  73. cap question....
  74. Ming Da MC368-B90
  75. single tube to drive 300ohm headphones
  76. Negative Feedback?
  77. Capacitor voltage ratings
  78. Possible to convert an oscilloscope into a tube amp?
  79. "Junkbox" 2A5 SE
  80. Power supply testing
  81. Tubeamp power supply - LC question
  82. tube amp coupling cap - audiospace
  83. Radford pentode-triode LTP splitter
  84. Tube bias testers, your opinions, please.
  85. Just saw this and thought I'd pass it along. . .
  86. 6KG6-EL509-EL519 Schematics wanted
  87. Difference between SE output transformer and push-pull output transformers
  88. Sourcing OPTs in Australia
  89. Is there a LOCTAL equiv to a 6V6?
  90. 10m45s LTspice model
  91. What circuit and tube to be used
  92. experimental 6L6G / 6BG6G amp design brainstorm
  93. 29GK6 heater current?
  94. Bench PS: stacking DC supplies
  95. Mr Liung schematics
  96. Want to build tube amp
  97. Runaway bias on Hot Rod Deville
  98. Back to back transformers.
  99. Using Battery for 300v B+ ?
  100. Anyone recognice this RIAA?
  101. Power cord replacement
  102. Negative LTP CCS supply
  103. c-j pre amp blowing tubes?
  104. first amp build
  105. Tube Mic Preamp - which Edcor transformer?
  106. Scaling the SLCF for other voltage - help
  107. Question about Allied & Hammond Power Transformer Ratings
  108. Education
  109. Tubelab SE with a 6BX7 to drive 845s
  110. Bias Ground
  111. Suggestions for RIAA preamp?
  112. External Test Points
  113. b2spice model request
  114. 12aY 7 preamp out
  115. 3B7 Loctal DHT
  116. Aikido All in One line stage amp PCB
  117. SS power supply.
  118. 6AU6 pentodes
  119. Parafeed with NP electrolytic?
  120. Charlie K - RIP
  121. Need some advise with a hum problem
  122. What resistor should I use?
  123. IN18 nixies
  124. Tubelab SE build and power supply questions.
  125. Quality of S5's K-12G in proposed system
  126. Gibson EH 150 restoration
  127. Transformer volume control questions.
  128. Power transformer star ground
  129. Shielding and chassis
  130. Side project - d3a and 6c41c
  131. Cathode-heater leakage
  132. Bell 2122 volume drop off
  133. -500V Maida regulator inquiry
  134. 7591 is glowing RED
  135. Hum problem
  136. Need PS schematic for Musical Machine
  137. Polystyrene capacitor as coupling in output tube stages
  138. Help needed with 10M45S integration .
  139. Ultrasonic Cleaning??????
  140. The daunting world of tubes (where to start)
  141. help 124.3 vac
  142. Bat VK3i buzzing noise
  143. Audioromy FU13 (813) diagram and mods
  144. any complete schematic for 6ak5?
  145. Weird fuzz from Aikido Pre, HELP!
  146. Question about tube amplifier.
  147. 811a rating question
  148. Anode chokes DIY?
  149. EI laminations in Europe
  150. Needed: transformer core materials cobalt nickel
  151. Anybody from Italy - please help
  152. Bogen AP35 amp problem
  153. Question about a VR screen supply
  154. DIY Amp Contest in Japan
  155. Hot 5AR4/GZ34 arcing on powerup surge?
  156. Rh84 Ptx
  157. Buzz. Grounding-related?
  158. 50/60Hz Hum - Your Expert Opinion Please
  159. Static Gm test
  160. High Voltage negative regulators
  161. where do i find old tube car radio schematics?
  162. Burned Up Transformer in HiFi 6p3p Tube Amplifier
  163. capacitors
  164. Wire Types
  165. Weird EH12AY7 Problem
  166. Pot and knob compatability
  167. ECC8100 and ECC2000
  168. DHT experts, i need your help
  169. transformers
  170. Vetruvio class-A
  171. PP to balanced input
  172. KT88 AB2 Experiences
  173. Group buy pulse check for Pete Millett tube crossover PCB
  174. Calculating operating point of a DHT
  175. upgrades, mods to JADIS JA-200, JPS2 and JPS3
  176. McIntosh MC-3500 Schematic Information
  177. Use 2X SE output transformers fo 1x PP
  178. 12B4a spice model.
  179. Help identifying a capacitor
  180. recommended a tube amp for Celestron Studio Ditton 66's
  181. Help needed with bias circuit
  182. 220 Mega Ohm Resistor - Really
  183. How to bias DH dual triodes?
  184. Any of these tubes good for audio applications?
  185. DIY AN M7 need help !!!
  186. Need schematic for Bell 2420 amp
  187. new SimpleSE build
  188. My Citation II Rebuild
  189. KT88 cathode resistors?
  190. Dynaco ST35 boards
  191. Triode strapping a 6V6 (or any tetrode/pentode, really)
  192. ECC 83 + ELL 80 maybe?
  193. need amp suggestions please.
  194. Phase splitter which tube?
  195. WANTED: 12B4A tubes
  196. re-stacking an output transformer
  197. A directly heated triode or Pentode SE amp on a Budget
  198. Annoying high frequency ringing from my 832 tube amp
  199. 30 Amp Knobs
  200. A question about audio interconnects for the ones here with such knowledge.
  201. Hi-end GM70 amplifier with only 2 stages
  202. Paragon
  203. Simple SE with CCS and fixed bias
  204. Idea(s) for simple HV regulated psu
  205. NOS Philips "miniwatt/dario" tubes
  206. Hybrid Class D with 6n6p tubes
  207. Any ideas how to estimate VA or mA of Power Tranny
  208. 6L6 Grid resistors??
  209. HeathKit W-2: Missing Tube
  210. Edcor CXSE25-8-5K Dimensions
  211. Bias Pots
  212. Negative Feedback
  213. scott 299D output transformers?
  214. chocke anode load, please explain me..
  215. Integrated HiEnd Amp
  216. Looking for advice/tips regarding simple SE amplifer
  217. Tube amps from vintage RTR's?
  218. componet upgrade
  219. What is "AA" ?
  220. question about twin triode tubes
  221. Building a preamp - somewhat new to tubes
  222. need some guidance about tube amplifiers
  223. Blackgate FK 10000 uF ??
  224. PT failure dangers
  225. Outer foil k40y-9
  226. sansui 1000a maintenance
  227. filter cap question
  228. add UL tap for 125ese
  229. Bogen D070 Amp - HELP w/ INFO.
  230. Humming asl 2004dt wave pre amp
  231. Cany anyone supply any info. about this amplifier?
  232. Low voltage 845SE with 300B driver
  233. Cabinet Help!!!!
  234. dc heater supply help
  235. gu-29 tube
  236. LTP question
  237. Over 500V rated electrolytics?
  238. Fireplug? (inline fuse)
  239. Help! Flash-over on my amp :-(
  240. 6550 drive question
  241. 4211D Amp?
  242. Please, reccomand me about 7233 GE NOS
  243. Help! Schematic Conrad Johnson Premier 3
  244. Tubelab SE in parallel?
  245. Just an Idea?
  246. Tried this out, but needs more gain. . .
  247. EL34 Power Stage
  248. Daven Question
  249. How many rectifiers can have mesh plates?
  250. Real Quick Question!!

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