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  1. HK Citation V rebuild - any advice?
  2. 6GM8/ECC86
  3. Sound Valves vtp-101 Schematic
  4. ~17-18w sweep tube with large plate cap
  5. Fisher 500B Comparison
  6. New build of P-P PCL86 Amp
  7. Transformer question
  8. Can 110V Quad IIs be configured to 220V?
  9. Advice needed re repairing Audio Research VT100
  10. Yaqin SD-CD3 Tube Buffer - upgrading caps
  11. Best value speakers
  12. Gyrator PSU's in tube amps
  13. EL34 Amp Running KT66, Safe ?
  14. MJ Optimized Valve Regulator
  15. Need JAN 6418 tube stereo headphone preamp kit advice!
  16. Electronic choke
  17. Can you please help identifying this amp?
  18. [TubeAmp] Beginner's questions
  19. .47uF output cap to 1uF?
  20. Spark gaps on output transformers
  21. St 35 or St 70?
  22. Pi wound output transformers
  23. miniatures 6n1p 6n2p
  24. HK Citation V schematic?
  25. Help! can't find ef86 on my Hickok 539b roll chart! and need a tube project
  26. Physical Oscillating noise from phono stage
  27. PP 6c33c-b
  28. Modifying the classic Williamson
  29. eimac 152TL and 304TL
  30. LTspice model for Dynaco A470 Output Transfomer
  31. audiodesignguide.com PP KT88
  32. One more 4P1L SE
  33. Mount rectifier above torroidal transformer?
  34. Extending Tube Sockets off a PCB
  35. EMG 200 tube tester
  36. Looking for a great starter stereo P-P amp
  37. Question regarding value of Telefunken tubes.
  38. Magic Eye tube
  39. Partridge Transformers
  40. 6CG7 replacing E88CC in SE KT88 Amp.
  41. Omit the filament windings -- LTM8033 from Linear
  42. Best position for bleeder resistor?
  43. anyone have experience with a Radio Craftsmen C400?
  44. Amp-A, a variation to the EL84 Push Pull theme
  45. tony's 6LU8 push-pull power amp build
  46. First Post Here
  47. MFA Lumi sings high-pitched tunes
  48. Power tubes not drawing current
  49. replacing tubes with circuitry
  50. High Voltage Regulators (Maida or zener)
  51. GU-81m tube amp schematics???
  52. Suggestions on SIPP driver stage
  53. How to eliminate the "white noise" for the 300B tube amp?
  54. 6BQ5 UL Curves?
  55. Looking for simple Schematic of 2A3 or 45 or 26 Headphone Amp SE OTL ? anyone ?
  56. 6N1P and 6N6P OTL headphone amp
  57. New Project
  58. Understanding Steve Bench's regulated power supply
  59. Preamp with buffer design
  60. JP200 preamp?
  61. IFI 6SN7 X3 (6N8P-6H8C) Tube Valve Preamp Kit Board from eBay
  62. New Tube Manufacture?
  63. Lowering B+ in PS
  64. Rectifier tube blows
  65. direct coupling
  66. Need some help with these tubes
  67. Edcor GSXE10-8-5K primary Inductance?
  68. My "Red board" chassis
  69. PP EL34
  70. Building something better with a Chinese SE EL34B Amp DIY Kit
  71. Problem with my amp, and I have run out of ideas
  72. Value of coupling caps
  73. Testing 6BQ5 on Hickok I-177B
  74. Stepped Attenuator for AI Modulus IIA
  75. Tubes are beautifully colored....right?
  76. Differential Input for Aikido Amp?
  77. MY BEST OTL PREAMPLIFIER
  78. Valve testing machine
  79. Line stage with 12AU7 and 6CG7 anyone?
  80. MingDa MC845-C or Opera COnsonance Reference 9.9
  81. Lower gain 12AX7?
  82. Needed: schematic for Ming Da MC34ab
  83. Solid State Cathodyne Phase Splitter Device?
  84. My Wave Isn't Square.
  85. 6J7 driver in WE91 like amplifier
  86. F2a - C3m Monkey
  87. balanced/unbalanced questions decision time
  88. Stern's saville double 6
  89. GM70 psu transformer.
  90. Antek toroidal vs Edcor?
  91. current production pentode, I_a ~ 8mA
  92. Brook 10c clone
  93. Unknown lamps need help
  94. What's wrong with this?
  95. Microphonics from C0G Caps across Heaters
  96. Yarland FV34CIII vs Synthesis Nimis
  97. 12AT7 and TDA1543...
  98. Eico Hf-81 Integrated Amplifier
  99. Tubed voltage regulator for KT88se amp, need help ?
  100. 1st post what can i build with this?
  101. CJ PV-3 voltage values for schematic
  102. How to analyze square waves?
  103. From KT90 to KT88
  104. side by side bifilar windings in excess of 1000 volts
  105. looking for a great tube amp book.
  106. Revox G36 Mod for preamp
  107. 33 in triode mode...any experience ?
  108. Help with Decware Zen EL84 SET
  109. Find schematic of amplifier mcintosh mc 275 mkiv
  110. Heater wiring - Coaxial?
  111. now mono blocks!
  112. Heathkit AA-40 or AA-121
  113. UTC o-9 ouncers for headphone amp?
  114. Help modify 6H30 Mu-follower stage
  115. Help me to identify unknown tube
  116. Valve Compressor Circuit
  117. Should I rebuild my Eico 950 Cap Tester?
  118. Choke orientation (Need help)
  119. push pull 813 tube in ultra linear mode
  120. AD1865 DAC + 6SN7 analogue stage
  121. Inexpensive tube amplifier kits?
  122. SET amp/speaker issue.
  123. No pre-Amp - Pre Amp
  124. Found a CHEAP source of output transformers in Europe
  125. How calculate cathode LEDs biased
  126. ESR test for tube amps ?
  127. asking help/knowledge asked: luxman d105u output stage
  128. Have you ever seen a 4 pin blue Alps pot??? need help
  129. Any ideas on this one???
  130. Why not 6C41C used in OTL??
  131. 6p14p(EL84) SE with 6n6p build jurnal
  132. Oscilloscope - Which one should I get ? What to look for?
  133. "Jonokuchi" - new desktop amp, or "Little red board"?
  134. Robust Driver stage recommendations
  135. Wireless World valve articles from the past
  136. Overshoot and Ringing
  137. B&K Tube Tester
  138. Harman Kardon A50K
  139. HiFi Tube amp project
  140. Submitted for your (dis) approval, OTL, Autobias Inv. Futterman
  141. Tone control - good diagram needed
  142. Dolby AC3 coming on nicely.
  143. Power Supply Question
  144. Dynatuner FM-1 Restoration
  145. faulty audioromy 6550 no output and very faith sound please help
  146. just one tube preamp or driver
  147. Power triode preamp a different way
  148. 49.95 Tube amp?!
  149. Which cap for the Musical Machine?
  150. How much power do I need in the kitchen?
  151. 1Gohm or higher resistor ...
  152. Grounding check for SE 300B amp
  153. Suggest me a build for HD600 headphones
  154. 6BQ5 Screen Voltage Regulator
  155. 6SN7 Tubes
  156. My first tube Amplifier VT4C DIY record
  157. Amplifier output wattage test
  158. Troubble shooting help please.....
  159. Heater Wiring
  160. 220/110 step down in reverse ... and more
  161. Input Level Devil please help
  162. Soft start for a preamp?
  163. Opinion requested: MingDa MC300 variants versus Consonance Cyber range
  164. Using one KT77 and one EL34 per side?
  165. Help identifying transformer wires.
  166. tube pre and tube power amp
  167. Spice Models for Tubes w Screen Grid by Gurski
  168. Theremin project needs some help!
  169. Transformer abuse or other use
  170. aikido heater voltage
  171. HY51Z datasheet, help !!!
  172. 6L6 amp with unique phase splitter - check my math
  173. Dynaco A451 Output Transformer
  174. my 250 watt tube amp can be a 500 watt tube amp for less than 2 bucks plus tubes
  175. 6AU6 preamp problem
  176. Help identifying a Telefunken(?) tube...
  177. UCC85 and e-pay
  178. Lundahl LL1676 - missing data
  179. valve phono pre-amp HELP needed
  180. Preamp pcb
  181. Strange Problem In Tube Amp Build
  182. Output transformer question
  183. Replacing ECL86/6GW8 to PCL86(14GW8)???
  184. On or Off?
  185. Neg-Feedback into Grid of gain stage instead of cathode?
  186. Accuphase F-25 Japanese manual translation help!
  187. Negative supply with CT tranny
  188. E130L SE again
  189. tony builds a 7N7 preamp
  190. Tango 10429 78% Nickle Output Transformer?
  191. Bias for Ipod Input
  192. What about this driver????
  193. allen organ amp 75
  194. Needs help Tubezone Poseidon
  195. Lightbulb trick on filament circuit?
  196. AMC CVT3030a Help for repair
  197. TF110-48/UL in the UK?
  198. hum in pas2
  199. Aikido Cathode Follwer Question
  200. Fuses...what's the deal?
  201. Question Regarding a Partial Feedback 807 SE
  202. Leftover transformers
  203. Newbie "In Search of help"
  204. ELL80/ECLL800 Cathode follower
  205. The "Tube" bookshelf
  206. knight KG-240? low output help
  207. Vacuum tube VCO
  208. JE lab 2a3 , fizzy, squeal in one channel, help
  209. Trouble with a DIY EL34 Tube Amp Kit
  210. SPICE Transformer Model Spreadsheet
  211. Choosing the right triode as a Phase Inverter
  212. toob noob with GE 5670 and I'd like to do something with it. Help?
  213. my first tube amp, no tubes...
  214. Enough heat to power my CD player...
  215. My first tube amp: 6C33C
  216. S5 16LS kit as a first DIY tube build?
  217. lady day we 91 psu mod help
  218. On days like these ...
  219. The Magnetron - A Low Noise, Long Life Amplifier????
  220. 6M11's
  221. DC coupled 300B idea - request for comments
  222. Fisher bias
  223. How does anode voltage swing to twice HT voltage?
  224. Can a 7625 Ceramic Planar Triode be soldered ?
  225. AMI "DD" Project: 6L6
  226. Plate loading questions
  227. EZ81 rectifier
  228. PY500a
  229. Tube Regulator Thoughts?
  230. Fully balanced from cartridge to loudspeaker - a little help needed!
  231. OPT on the speaker side?
  232. tube circuit conversions?
  233. Current inrush limiter suggestions
  234. Repair of Philips EL6416 amplifiers.
  235. GU-19 In priboi
  236. Duncan Amps PSU Designer II
  237. using existing pre with this circuit
  238. Antek AT-070L Specs
  239. Unused tube sections
  240. Rewire Rectifier Sockets for Tube Substitution
  241. Shuguang 300BC
  242. Sn/Pb S-Sn/Cu ...
  243. What and Where is BAF?
  244. CCS plate follower 12bh7 schematic needed pls
  245. 300B DC heaters confusion
  246. Blue Tube Red Plating = Help!
  247. Tube bass preamplifier power supply (Need Help)
  248. Opera Consonance M500 mkii
  249. 6AC7EH Better but different
  250. For that hard to find 5HY 2 amp choke...

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