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  1. Choke for 6v6 lacewood amp.
  2. Output Tube Options for Scott 399
  3. ST-35 Z565 Output Transformer Troubles?
  4. Point to Point Wiring Tube Preamp
  5. Siamese RG-6
  6. Gz34 rectifier with dc heater
  7. line preamp
  8. A bit of help with my phono preamp
  9. Aikido Cascode Preamp build
  10. Can EL34 replace KT88?
  11. Current Draw of CJ ART??
  12. Square wave overshot=worm sound?
  13. Band pass filter for tube amps
  14. Screen drive and the 6AG9
  15. Cleaning odd potentiometer
  16. Removing a Jolida 502 Balance Control
  17. "The unequal twins" ECC83 / ECC99 Triode and 6N1P / E280F pentode amps
  18. Marantz 8 blowing fuse
  19. A newbie question about 12AX7 tube
  20. Web resources
  21. Transformer Shrouding - Purpose/Effectiveness
  22. current source
  23. KT88 Schematic - please help
  24. 105C to 85C Capacitors in Cheap Chinese Preamp
  25. Need help with plate CCS in 6EM7
  26. Need help on replacing Cap on Marantz 8
  27. Transformer for 12ax7 B+ calculation
  28. First amp build, advice and thoughts encouraged!!
  29. Proposed E-Linear PP 6L6GB w/ EL83 LTP - Critique?
  30. Luxman CL36, schematic
  31. Help with input impedance
  32. phono sp16
  33. Looking for a 20W amp schematics
  34. Ruggedized tube construction?
  35. Quicksilver full function preamplifier
  36. Another variants of using PCB from Ebay
  37. Valves very close each other...
  38. HF valve amp?
  39. Eico ST70 construction manual...
  40. value in humour
  41. "rejuvenate" oxide cathode
  42. el84 se amp layout
  43. the grand return. 3d21A triode PP
  44. How did receiving valve manufacture compare to the LHC ...
  45. Classi RIAA preamp questions
  46. Max input voltage with negative feedback in place?
  47. Is there a 9-pin mini equivalent of 6AU6?
  48. Which DHT tube, mu>30 driver duty
  49. LTP and H3 distortion
  50. Schematics for Bendix 6384
  51. Has anybody compared distortion profiles of their amp designs?
  52. Dynacord transformer sparks flying
  53. Why this exists?
  54. Help with strange valve project:)
  55. help with these transformers please
  56. Bias a heater supply with humdinger?
  57. Question About Isolating Grounds
  58. How close is close enough for setting bias?
  59. Vitamin Q or Auricaps for coupling...any opinions?
  60. High current from EL84 measured on tubetester
  61. Power supply design for my preamp
  62. How do I get USB input into a tube amp?
  63. Janus Shunt Regulator / Aikido Octal build
  64. 6SN7 or 12AU7 Tube preamp for Gainclone
  65. E-Linear, P-P pentode application
  66. 6n6p preamp. Does it look ok?
  67. www.grippeaz.com
  68. Capacitance value help
  69. 6C33 SVETLANA in 1979??
  70. FYI: MCM 555-7125 Transformer Info
  71. Anyone use 39/44 for audio?
  72. I think its about time for me to design my first Transformer tube amp..
  73. Q: EL84 PP - Bias switch, PS regulation
  74. Balanced to unbalanced converter solution with only one dual triode?
  75. ECL85 G1+G2 Driven Amp Concept - Worth Pursuing?
  76. What is this called? "Triode with active load"?
  77. Type 50 triode amp
  78. Triode strapped C3G
  79. Newbie looking for first tube project. Maggie 9308 or like suggestions?
  80. Poindexter's Musical Machine:Tube Power Supply Schematic
  81. SE EL34 cathode help ?
  82. How to add "Vu-Meters and "Subwoofer Out" to a tube amp...
  83. Audio Research D90... a HOT, buzzing amplifier
  84. Lundahl LL1670 grid choke -- One or two needed for push-pull?
  85. At this stage of my experience almost too afraid to ask
  86. Help with EM7 circuit
  87. Ceramic or plastic noval socket
  88. Need connection info for Thordarson 22S86
  89. Harmon Kardon A500 Redux
  90. Schematic for 2A3/300B SET OTL amp
  91. Bias circuit for fixed bias
  92. Ultrapath with cathode bypass cap: which value of C is correct?
  93. Volume Control Tube Amp / Graaf Graafiti WFB one
  94. Pultec EGP-2 control pannel
  95. Emission values?
  96. Capacitor Upgrade for S5 Electronics (16LS)
  97. 'nipple' in waveform - What is it?
  98. High impedance speaker for SET OTL amps.
  99. Uneven output from LL1677
  100. Ugh. Need help with hum
  101. 6H16B plate follower output stage
  102. Tube preamp 30 gain design with 12ax7
  103. Operating points for 6n2p
  104. Have you tested if two coupling capacitors in parallel are better than one sonically?
  105. DHT filament circuits - best wirewound resistors?
  106. Dual Pentode as two seperate Pentodes.
  107. Double "C" core OPT question
  108. EL34 pentode to triode feedback
  109. Chinese 7308?
  110. DC coupled circuits
  111. Need a complete amp kit for newbie
  112. Making a tube amp
  113. Tube amp diode question
  114. Michaelson Chronos
  115. Preamp question
  116. 6SJ7 and 6SC7 not on roll chart
  117. Graaf GM20 6C33
  118. Does Ultra-Linear SE reduce harmonic distortion?
  119. How to use a 3 prong plug with a Dynaco MkIII?
  120. 6e5-6e6 tube-operating point-absolute maximum rating
  121. LIFePO4 battery cathode bias
  122. Audible Illusions Modulus 3A CD input resistor values
  123. Insulation for component leads in point to point wiring
  124. Advices on first tube amp
  125. 300B Tube Shootout
  126. Unison reasearch Mystery One
  127. 4P10C or 4Π10C tube, any member familiar with?
  128. Largest decoupling cap (DC block on signal path)
  129. Control Grid Feedback (as opposed to Cathode FB) and Miller Capacitance
  130. 211 / 845 ccs?
  131. Eimac 35T any good for an amplifier?
  132. What speaker impedance for a 5 ohm amplifier
  133. Almarro A318B SET Amplifier Simple Modifications For Improved Performance?
  134. Hammond interstage
  135. Bias Arrangement
  136. question about connecting my tube amp to a receiver
  137. Pentode screen bypass capacitor
  138. MINGDA MC845 AA schematics
  139. Faulty Output Transformer
  140. The makings of a nice SEP amp from an audio oscillator?
  141. Audio pot with tap
  142. tube amp and jbl crossover connection
  143. SE EL84 high screen and plate
  144. Marantz 7 line stage with DAC
  145. help with Ecc82/12AU7 selection
  146. Kt88's and 6SN7's?
  147. KR T-1610: What can I do with it?
  148. Schematic
  149. Determining primary output load resistance...
  150. Warning about chokes by Toroidy
  151. Looking af new 845
  152. 807 Amplifier build.....Help Wanted
  153. Claus Byrith 4-30 - HELP !
  154. LR8 as CCS for small tube cathode follower?
  155. Tektronix 120-086 transformer
  156. 01A question
  157. Determining input impedance
  158. Plate to cathode feedback
  159. Quick question about EL84 PSE
  160. P-SET EL34
  161. 6v6 Preamp Explorations
  162. Monoblock kits for $500
  163. Wanted/Needed Vaic Valve / KR 52B etc.
  164. Measuring Rp on the bench
  165. Clarifying RIAA calculations
  166. Emissions Labs 5U4G use statements
  167. Help me pick my first tube kit/winter project (tube preamp)
  168. Please explain feedback to an ignoramus
  169. Op-Amp/Power tube integration
  170. 12b4a preamp project
  171. Pot to Stepping and ohmic value change
  172. McIntosh MC2000
  173. universal high-gain pre-amp useful ?
  174. 6AX5, the forgotten rectifier?
  175. High gain pentode LTP?
  176. question with heater wiring
  177. Ideas for an hi-fi mono amplifier (and preamplifier)
  178. humm and buzz
  179. ECC88 For LTP
  180. Polam / Telam tubes !
  181. Question about grid input signal voltage
  182. Douk EL34 Amp kit
  183. ID help Please Hammond Amp
  184. rolling ecc88 into a 6cg7 socket
  185. Article Wanted - "High Quality Amplifier with the 6AS7G" by McProud
  186. capacitors
  187. Need a little WE 597A help
  188. Need to find - Triode Va=500V, Mu=20
  189. The Pomato, A hybrid can amp
  190. audio research sp16 phono no rec
  191. Effect of raising and lowering B+
  192. Ideas for tube amp EL34/ECC83 single ended
  193. The HiFi show 2015 UK
  194. Coupling capacitors
  195. Brook 12A
  196. Importance of plate voltage on overall performance
  197. Help Precision Fidelity M-7 amp
  198. And so it begins...
  199. What is the cream of the crop for DIY tubes kits?
  200. Amplifier Build - Suggestions
  201. 26DQ5 curves pin out
  202. Toroidal Transformer Upgrade for S5 Electronics K-16LS Kit
  203. VR tube RF issues
  204. usb and 3.5 to same pre
  205. Gain changing on 6n3 tube buffer
  206. Kelvin Capacitors
  207. simple question about on off switch
  208. Engineers Amp chassis
  209. First tube amp design, what are my mistakes?
  210. US 6L6GC identification
  211. PL508 triode curves, help !!!
  212. Multiple gain stages without continually increasing B+
  213. Choke and Capacitor input filters on a same winding?
  214. Any advice value for Volume control if....
  215. For tube lovers-Henry Wolcott Amplifiers from JBL PL100
  216. Help translate stamp mark on russian tube
  217. UK Engineers Amp (my first project)
  218. 12AX7 Heater pin 9
  219. Help With Translating Schematic
  220. Do diodes in the power section produce heat?
  221. you gotta laugh......really!!
  222. why is dc coupled better ?
  223. ARC grounding question
  224. Littles modifications of Triode Dick's KT88 MonoBill Classic
  225. New 6BG6G Amp
  226. Aesthetix Rhea Power Supply voltages
  227. Newbie - Broken Valve amp help!!
  228. New Build - Geraldine SE Amp
  229. Michaelson&Austin save attempt
  230. LTspice model needed....6JN6
  231. Big distortion of tube amplifier at high frequencies
  232. Radio Tubes Classifieds
  233. Sad and Lonely 6X4 Rectifier
  234. The Wild, Weird, World of GNF
  235. My first tube amp is here!!!
  236. Retro nixie volume indicator
  237. how to connect my corrent output DAC to my preamp TUBE?
  238. Roberts 770x / Akai M8 Tube Amplifier Question
  239. Conrad Johnson MV50 adjustment?
  240. Hum in console preamp after power supply rebuild
  241. Electrohome console amp?
  242. input impedance of mullard 3-3 amplifier....
  243. 6X4 Tube Rectifier Bridge
  244. can I use a zener for cathode bias
  245. Dual 5V winding 5AR4
  246. el84 test jig circuit
  247. suggestions wanted for otl design
  248. Converting a single ended amp to parafeed
  249. Online stores for ordering Hitachi Metglas cores?
  250. Box of old tubes

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