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  1. 71A Tube Filament: AC or DC ?
  2. My Current Line + Phono Combo
  3. What is better than one audioromy M-828A FU29?
  4. Mazda tube
  5. Aikido selectable gain
  6. Preamp power supply
  7. Has anyone used CV9 tubes in a pp design
  8. 9 pin Vector turret socketsIt seems that Vector turret 9 pin sockets are hard to come
  9. BALANCED AUDIO VK 5 VK20
  10. Output transformer computation
  11. 2E25 Tetrode in Ultra-linear mode...NICE !!!
  12. Input Attenuators
  13. new build SE to EL 508
  14. found this on kickstarter
  15. SE Output Transformer question
  16. Safety of DC-coupled inputs
  17. Found some old tubes.
  18. Presence control
  19. lafayette pa 622 -> Guitar amp conversion
  20. Fixing an amp head - bad tubes?
  21. EL84 what factory produced it?
  22. Trio Corp 300b fake?
  23. Cheap triode class A 3Watt + assembled/kit you know ?
  24. Elekit tu 879s upgrades
  25. EZ80 Choke Input Max Capacitance
  26. Correct measurement of filament voltage.
  27. Who put the "half" in the Koren SPICE equation
  28. 5Y3 tube rectifier
  29. Triode or ultraliner connected ?
  30. What is the "Tube Sound"?
  31. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  32. Which KT88 ?
  33. Why make a tube amp that sounds like a SS amp?
  34. Mark VI power Supply
  35. audioromy fu29 - not working, repair or scrap?
  36. Valve amp questions for someone new to them.
  37. Driving Parallel Tubes
  38. Matching quad set
  39. Anyone listen a 46 in UL mode ?
  40. McIntosh MC30 vs. Fisher 80-AZ
  41. Voltage Divider at input to Power Amp
  42. Checking EL84 with Eico 625
  43. Dynaclone ST70 6F2 Alternative
  44. Nobsound MS10D
  45. Need Help - Monoblock Power Amplifier EL 34
  46. Replace output transformers in Dynaco ST70
  47. 6P14P-EV in my Simple P-P
  48. Help finding a new tube headphone amp
  49. Cost of building from scratch
  50. Help with loadlines in p.s.e.
  51. Simplified pentode Loftin-White with plate-plate feedback
  52. Inductor Fed VR Tube
  53. Screen Grid Peak Voltage
  54. Unknown (Westrex?) AE285 KT66 cinema amplifier
  55. Has anyone dual-monoed a Stereo 70?
  56. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  57. Pentode G1 series resistance effects.
  58. MUZAK 975a 75watt, 50s
  59. Hybrid SS/Tube Balanced Mic Pre
  60. Adding a baland pot to cathodes on a cathode biased amp?
  61. Is the 8532W a substitute for 8532?
  62. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  63. Configuring 2A3 Driver for 2A3 PSE
  64. Integrated Tube Amp opinion
  65. Ultra-Linear vs. Pentode Longevity
  66. RCA PA amp SA752LO...
  67. Running preamp into acive speakers with cap input
  68. Putting Stock In Carver?
  69. Weak treble
  70. About GU50 PP in UL with separate G2 winding and supply
  71. tube tester comparison
  72. Volume control after the preamp stage or before ?
  73. COPLAND CTA 401 - upgrade of components ?
  74. 2 amp simulation/dummy load for transformer
  75. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  76. 809 Triodes
  77. PSRR
  78. Looking for a schematic or link to a post
  79. Who makes a Williamson output transformer ?
  80. Help with an S5 K12-G Tube Amp
  81. Turing's new tube amps. Please give staff about.
  82. Life Expectancy of DHT's
  83. 6GB8 data sheet translation needed
  84. Full Wave Rectifiers: Center Tapped vs. Bridged
  85. Vectorscope?
  86. Apple macmini become to 6MD8 tube amp
  87. Potting Wax?
  88. How do I repair my Tube Amp?
  89. asr433 simple problem (i hope)
  90. Russian Tube Codes
  91. Help: Driver Stage Design
  92. PAS Power Transformer Capability
  93. 7A5 tube...a small marvel !!!
  94. phono preamp for the s5 electronics model 16ls amp
  95. Screen Stopper Blew
  96. Hickok 533 and 6dj8/6922
  97. OTL design opinion
  98. Pile of TEK scopes.........what do I keep?
  99. Inclusion of an oscilloscope on tester
  100. 6V6SE - Suggestions?
  101. Heretical Line Stage: BOM?
  102. Tube amp to drive 4 ohm headphones?
  103. Another TVA1 - KT88 power amplifier
  104. 845 parafeed
  105. datasheet 6P44C
  106. ecc85 tube buffer or line stage?
  107. Valvestate 8080 That's been dog Peed...
  108. pre war gibson eh125 schematic question
  109. "An elegant full function tube preamp mated to 1st rate SS power amp"
  110. How to select a good Hifi 12AX7 tube?
  111. LTP with CCS and negative PS
  112. Odd phase splitter
  113. Yet Another Hybrid Amplifier
  114. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  115. Heater to Cathode voltage e88cc
  116. ASR-433
  117. Marantz 8B phase splitter
  118. Silvertone 1485 - Output Transformer advice
  119. Bob Latino ST120 Down
  120. SS phase splitters?
  121. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  122. SE 6L6 to KT88
  123. HT power supply design
  124. Good tubes for concertina - 4P1L maybe?
  125. Powr supply question
  126. What is wrong with this Amplifier?
  127. Palmer DREI - Three SE Output Tubes Together?
  128. Heathkit TC-2 Checker and KT88s
  129. my Dummy Amp Contraption
  130. HF Oscillation Heat-Up Spk's Magnet!?
  131. Triode calculations
  132. Western Electric 131
  133. Electrolytic vs. Film 2A3 Cathode Bypass?
  134. Sylvania JAN 6SN7WGTA, late 1970's
  135. TV7 tester problem with 6CB5A tube
  136. Stromberg-Carlson AP-55
  137. SHUGUANG 2A3
  138. Circuit breaker help.
  139. Recommend me a bookshelf speaker for 5W
  140. Monarch STA 100X weird?
  141. 1954 US Army "Sound Repeater" amplifier
  142. 6N7...this configuration work ?
  143. RIAA Active EQ
  144. Direct Coupled E-Linear Amp
  145. Double Triode Mu
  146. Music Angel kt88 new pcbs problem
  147. EL503 replacement?
  148. Reducing gain in a SRPP circuit with ECC82?
  149. 12XX7 Triodes
  150. Output Tx just for interest
  151. Valab in Taiwan output transformers
  152. Impedance Question
  153. How to include a dual triode tube in a KiCAD schematic?
  154. 12U7 SPICE Model
  155. Phono Stage Woofer Bounce
  156. Problem with new L3-3 please help!
  157. Edcor output transformer...very nice !!!
  158. SE Hybrid Amp "The Lunatic one"
  159. Marantz 8b power transformer B+ down 30%
  160. Single or paralell trafo?
  161. CJ PV 5 Impedance?
  162. ECF80 driving EL84 PP
  163. Luhdahl LL1660S what current rating for D3a driver?
  164. what's that cap?
  165. SE EL84 Component placement Suggestion
  166. How to make a cheap 6N3 Buffer Amp even better?
  167. buying Tube Amps need advice/opinions
  168. Best driver and Power 6V6 By Officina
  169. dynaco pas3
  170. 5U4GB full-wave bridge, stumped
  171. Complete Module Driver and Power with DHT 6B4G
  172. HELP NEEDED for a 6CA4/EZ81 power supply
  173. OT for 2A3 PSE w/Parafeed
  174. More Dynaco Mark VI Questions
  175. curious feedback in circuit of Pioneer SM-Q300 receiver
  176. Hytron 2E25 - Other forgotten and marvelous tube !
  177. need tube upgrade advice please sir
  178. buyer beware
  179. Analog tube for DAC & Power supply with valve EZ_80
  180. JJ 5y3S pin 1??
  181. My first Sansui AU-111 Rebuild
  182. Capacitor-induced distortion
  183. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  184. Common Cathode as DAC output
  185. Pre-Amp with russian tubes 1j24b
  186. How to calculate, the output impedance of a tube with grounded grid
  187. How To Draw Load Line With Output Transformer ?
  188. Inter electrode capacitance.
  189. My amp is an oscillator !
  190. TESLA PL509
  191. What value for Va ?
  192. Help selecting an input transformer ?
  193. Should same valves grid voltage vary much ?
  194. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  195. Restoring a Scott 299-B
  196. Latest project, 80 watt valve amplifier
  197. PP Amp Doubling Output Power
  198. Setting up a Wilson current mirror as a differential load
  199. interested in tube amps
  200. Baldwin 45P amp project
  201. DIYGene's Jadis JP-200 Preamp Kit
  202. Need design/schematic for 6H30P driven 6C33C SET
  203. Substitute 6AQ8 for my 6CG7's
  204. 6bq5 tubes in a Heathkit AA-151
  205. Marantz 8b restoration: colour code, prints, schematics
  206. Show me your screen drive circuits
  207. Potting Compounds
  208. Chokes in the ground "plane"
  209. OTL idea
  210. Balance control tip for newbee's
  211. Ebay win - is this any good?
  212. 6sn7 pse amp for altec lansing 604E
  213. "Cockeyed Bridge" with damper diode?
  214. Mac 2100 Hybrid
  215. Single-Stage Hybrid Cascode Power Amp
  216. New to Tube amps, heathkit question
  217. 6AS7 OTL PL build
  218. On Bootstrapping diodes for UL G2 MOSFET
  219. Chasing Aikido "hum"
  220. valve monobloc designs
  221. 7A5 is a good driver for the 300B ?
  222. Parallel Push Pull 6V6 design
  223. Black cat caps?
  224. Soundstage
  225. Brains & Brawn CF : where's the catch ?
  226. ISO-TANGO to quit
  227. Shifting reflective loads using secondary taps?
  228. VTL -- 20 6550's a side and their xfmrs
  229. "Diamond" tube preamp with 12au7
  230. Wich factory made this tube ?
  231. Bootstrapped Cathode Coupled Amplifier
  232. OTL 6AS7
  233. Diode performance testing
  234. Monacor SA-10
  235. Volume Control Hum
  236. Stromberg-Carlson AP-50
  237. 5 wire and 3 wire output transformer change ?
  238. Yaqin mc 10L
  239. Can OTL Ciclotron amp use solid state regulated PS?
  240. Cross-channel overtalk with strange effects
  241. Why 6.3V?
  242. KT88 Williamson Design Questions
  243. Winding a center-tap secondary
  244. HV delay switch
  245. McIntosh MC-30...Balanced Input Feasible?
  246. Designing line driver / pre-amp
  247. Bucking and boosting a tube power transformer
  248. 33A-158M
  249. All DHT integrated amp
  250. 6N1P

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