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  1. 211: 75W or 100W?
  2. Does really need a balanced preamp ?
  3. Power Transformer Hum
  4. Options for how to use this old tube PA amp? > 200W
  5. Flash getter question
  6. Heath W4 Output Xfmr - anyone measure one??
  7. Tube buffer with 6n3-EV
  8. First time with hi-fi, need some advise with amp desing
  9. Newbie wants to build SET 6C33C
  10. Another PP GU50
  11. SE Waveform
  12. Problem with CCS for filaments
  13. UL / Distributed Load - Screen vs. CFB Winding Ratios
  14. 50W PP - KT88 Build
  15. OP Tx and PPP to PP change over
  16. I need a little more advice on a Glassware Janus shunt regularor
  17. Pentode noise
  18. Dynaco ST-35 Circuits
  19. BIG Transformer Covers - Where to Find?
  20. Amplification breaks up after some time
  21. 6A5G schematic; changes from the 6Y6G tube
  22. ECC83 differential preamp optimisation
  23. 6Y6G SE SCHEMATIC NEEDING HELP!
  24. Need help identifying this tube...
  25. AMI DD project. Someone did some mods before me and I don't know whats what.
  26. (v?)Tailor PA-500 Tube Amp
  27. Transformer arrangement?
  28. Don't be stupid, you can't possibly do that with output transformers?
  29. Maximum Plate/Screen Voltage 6550 in UL
  30. Paper insulation for output transformers?
  31. Best PP OPT 30-100W range
  32. Tripath TA2020 + 6N3 Tube buffer
  33. El34 as triode
  34. tube preamp vol ctrl -- before or after?
  35. matisse preamp -review
  36. Ribbon Microphone Preamp
  37. Looking for tubes 6CL8 pentode Triode with lower output ratings
  38. Reducing Signal Level Without Affecting Tone
  39. VTVM/VOM???
  40. Micro amp - all-tube, direct heated, portable and IT FITS
  41. Wiring a 6AS7G to be Push Pull within its own envelope
  42. Wima MKP
  43. Will this circuit work ?
  44. new amp build
  45. MKP DC-LINK vs electrolytic power supply 4 tube amp
  46. Looking for ECC81
  47. Unison Research S6 (old version) auto or fixed bias?
  48. Troubleshooting a restored Edison 12 valve amplifier
  49. Counterpoint SA-220
  50. LTSpice models needed
  51. Magnavox 6V6 amp upgrade
  52. breadboard for tubes
  53. Looking for ideas... 50W OPTs
  54. SE Power Supply PCB
  55. Speakers for the 16LS Stereo Tube Amplifier
  56. will E80CF fit into yaqin 100b
  57. RH84 Rev2 Build w/Premium parts
  58. Single ended KT88 / 6SN7 not enough power
  59. Problem with push-pull KT88
  60. opinions please!
  61. Tube testing 101?
  62. Top aluminum plate from ProtoPanel.com
  63. 6GK5/300B
  64. Screen driven sweep tubes - the return of the evil kink?
  65. Parafeed 45 amps
  66. Has anyone tried the 6p1p EV?
  67. ECC88 mu-follower
  68. Reducing gain of a WE91 type amp
  69. 6sn7 mu-follower
  70. AES Preamp mods
  71. Oh! Darling
  72. Testing 3B22 on Hickok 752a
  73. Has anyone ever used the 6C41C in PP?
  74. RH 6V6
  75. Unholtz-Dickie amp, 4-1000's
  76. Somewhat Newbie..
  77. grounding RCA inputs
  78. ESS9018 I/V
  79. Catode follower with 6N7S (6n7GT)
  80. Recommended RIAA Values for this Circuit
  81. PC board design for PSE amp
  82. Audio Research SP-11 HV Regulator
  83. heathkit SA2
  84. russian 1578 tube production years
  85. partial list of tubes I have
  86. Bench Power Supply Questions ?
  87. Identify this tube?
  88. your input - bulb / led / neon selection for short tester
  89. Potted choke orientation/amp layout
  90. Tamura F-2012
  91. Joining output windings
  92. B&K 650 tube tester
  93. 5687 LTSpice model needed
  94. Can you identify this transformer? 70V line matching?
  95. I had to post this..the 211 in all its glory!
  96. Help with preamp/driver/output setup
  97. Accident - Shorted Cathode to grid!!
  98. Correct B+ for EL84 UL PP
  99. RH807 output transformer....what did you use?
  100. Headphone tube amp with balanced output?
  101. Tube buffer with 6n1p-EV
  102. First little SE
  103. ID Nice Unknown Tube
  104. Bell and Howell Model-601
  105. what should my mulit reader be on to bias yaqin 100b
  106. Fixing an old Tandberg Huldra 6 Radio
  107. 30W sweep tube amp
  108. Atmosphère S-40 with KT88, does someone know about this amp?
  109. What happens when Output transformer max voltage (slightly) exceeded?
  110. what type is the best?
  111. Kiwame carbon resistors
  112. Rocker Switch Wiring
  113. RH6550
  114. Diodes for Marantz 8B
  115. Diodes for Marantz 8B
  116. Telefunken 2430 Opus Resistor Burnout
  117. yaqin 100b with 2 different kt88 valves 2 are Genelex Gold Lion and 2 are Svetlena wi
  118. Conrad Johnson MV40 copy and Fisher OP's
  119. Are EF86 Tubes inherently microphonic?
  120. Counterpoint SA-1000 Hum in left channel Pinging Anatech!
  121. Need a rectifier tube...
  122. Looking for Harman Kardon Allegro A-10 Schematic or PhotoFact.
  123. How much spl can a triode take?
  124. Octal CCDA kit - help needed!
  125. Mod input of 6AU6/6AQ5 amp for iPod
  126. Put a tube on your PC just for fun..
  127. ST35 Cathode Feedback
  128. Series Shunt tube regulator
  129. Help ID this tube ^&$**@# lettering!
  130. Adding a db VU meter to an existing tube mic pre
  131. Quad 22 interstage cap?
  132. First test of my AX84 HI-octane
  133. 4P1L triode PP (40W!!?)
  134. KT88 shootout vintage vs new vs 90
  135. Help needed to identify this british made Amp
  136. PSU II Question
  137. Quality tube buffer with ECC83
  138. K12g Amp Question
  139. Stark 9-66 tube tester - repair help
  140. output transfo problem
  141. Pair of Fisher CA-40 Oddballs
  142. Model 601 tube amp.
  143. Model 601 Tube amp
  144. First power amp build. Is this normal??
  145. Compactronized 6146
  146. Preamp and inverter on B7G base tubes circuit.
  147. Advice and Suggestions on Amp designs
  148. Help who tube buffer x10-d
  149. EL803S-6CW5 / EL86 amp design check (schematic attached)
  150. amp buzz in one channel on inrush / power on
  151. SE 8-10W monoblock build help
  152. GlassWare Tube CAD
  153. SMD Parts and the DIYer
  154. 6CW5 / EL86 operating point
  155. RH84 power output
  156. 6n6p-ir
  157. Transformer bubbling
  158. Crackling noise.... pls help on Pre-amp
  159. RH84 amp. Plate is 300V. What voltage...
  160. Amplificator Class A 2 X EL504
  161. Help in testing 12ax7 and 7869 tubes
  162. Micro-Cap Tubes Parameters question
  163. Cathode Bypass Capacitor
  164. NOOB ALERT! sooo omany questions.....
  165. IS THIS A REAL E810F ???
  166. Chassis design question / cooling of small signal valves
  167. 5 leads pp output transformer
  168. Vote and Comment: SRPP vs. Aikido vs. Grounded Grid
  169. NEED ADVICE ON THIS SCHEMATIC AND WILL IT WOFK
  170. Help Identifying a Console Pull Amplifier
  171. sunaudio 2A3 circuit...is it good for newbie?
  172. KT120: When does it starts to sing ?
  173. Simple Time Delay (no more excuses for not having one)
  174. Cary SLP-05
  175. 6SN7 Grounded Grid
  176. input selector switch replacement help
  177. help needed with transformer wiring
  178. Tube Schematic Drawig Packages
  179. 12AU7 - 5V4G easy amplifier
  180. Glassware CCA 9-pin PDF
  181. Replacement for the tube 6922 (ECC88)?
  182. Which probes for my first scope?
  183. PP CATHODE BIAS WITH "CCS"
  184. current output tube amplifier
  185. Tube amp for a small room (newbie-like)
  186. What is this old thing from1929?
  187. Arduino cathode current HT etc
  188. Bizzare Output Transformer Connectivity...
  189. OPT to KT88?
  190. Help needed on identifing tube
  191. Amplifier circuit from tube radio
  192. Amplifier circuit from tube radio
  193. Using Valves Library in EAGLE CAD
  194. Biggest noval power pentode?
  195. Akita 12V preamp thoughts
  196. Help, what is this (Marconi 6204) ?
  197. Anyone try DHT 33 or 1Q5 Pentodes wired as Triode?
  198. Would this be a good buy?
  199. Looking for a complete DIY Tube amp
  200. Schematic by TS LIM Pre-amp
  201. Fisher Model 100 'AZ' Mono Amp Rebuild w/ Oscillations
  202. Measuring inductance
  203. Leak stereo 20
  204. Gain and gm of a QQE03/20 anyone ??
  205. Power supply options for tube amplifiers.
  206. CCS question mA
  207. Help wanted with testing and finetuning.
  208. YAQIN VK2100 pre amp
  209. Identify record player and valve
  210. AC Line Filter
  211. blue flash inside 5Y3GT
  212. Heater-Cathode Leakage
  213. Old Tube Kit
  214. Point to Point SET KT88/6550 Build
  215. D3a - MOSFET HYBRID CIRCLOTRON
  216. Aikido CCDA
  217. output impedance
  218. Bizzaro fix for hum problem needs explanation! Pretty Please
  219. Bizzaro fix for hum problem needs explanation! Pretty Please
  220. Questions regarding first build - K-502
  221. Good tube tech in Brooklyn NYC?
  222. Looking for LTspice tube models
  223. Audio Research SP15 : faulty phono stage
  224. Spark 810 looking for the diagram
  225. HP 8903B Question ?
  226. 1955 Hammond Organ Tube Amp
  227. Suggestions Please
  228. Croft Series 4 PL519 regulator
  229. Rectifier ID
  230. Adding headphone output to Darling amp
  231. CLC vs CLCLC Filter Power Supply
  232. Where to get Vacuum Tube Valley magazine?
  233. Magnavox 8802 HELP!!!
  234. Vaa for KT120
  235. Tubes in a Home Theater?
  236. Yaqin mc 10l tube risers?
  237. Wiring an LED strip into an amp?
  238. Need a bit more power :)
  239. yaqin 100b kt88-98 bulb blown and smoking coming from the amp
  240. Amp. 2x5W RV12 P2000driver RL12 P10 final
  241. Layout challange: Dual Maggie AMP148 based.
  242. Replacement PT question
  243. Real Telefunken E88CC?
  244. Any audio differences for EL-84 P-P OPT?
  245. Need help identifying this amplifier.
  246. Can anyone identify this valve / tube?
  247. Pentode-like Triodes
  248. Telefunken EL156 SE experience
  249. Help with a Tubelab SE Power Supply Transformer
  250. 33:1 opt for 5:1 use?

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