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  1. Who put the "half" in the Koren SPICE equation
  2. 5Y3 tube rectifier
  3. Triode or ultraliner connected ?
  4. What is the "Tube Sound"?
  5. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  6. Which KT88 ?
  7. Why make a tube amp that sounds like a SS amp?
  8. Mark VI power Supply
  9. audioromy fu29 - not working, repair or scrap?
  10. Valve amp questions for someone new to them.
  11. Driving Parallel Tubes
  12. Matching quad set
  13. Anyone listen a 46 in UL mode ?
  14. McIntosh MC30 vs. Fisher 80-AZ
  15. Voltage Divider at input to Power Amp
  16. Checking EL84 with Eico 625
  17. Dynaclone ST70 6F2 Alternative
  18. Nobsound MS10D
  19. Need Help - Monoblock Power Amplifier EL 34
  20. Replace output transformers in Dynaco ST70
  21. 6P14P-EV in my Simple P-P
  22. Help finding a new tube headphone amp
  23. Cost of building from scratch
  24. Help with loadlines in p.s.e.
  25. Simplified pentode Loftin-White with plate-plate feedback
  26. Inductor Fed VR Tube
  27. Screen Grid Peak Voltage
  28. Unknown (Westrex?) AE285 KT66 cinema amplifier
  29. Has anyone dual-monoed a Stereo 70?
  30. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  31. Pentode G1 series resistance effects.
  32. MUZAK 975a 75watt, 50s
  33. Hybrid SS/Tube Balanced Mic Pre
  34. Adding a baland pot to cathodes on a cathode biased amp?
  35. Is the 8532W a substitute for 8532?
  36. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  37. Configuring 2A3 Driver for 2A3 PSE
  38. Integrated Tube Amp opinion
  39. Ultra-Linear vs. Pentode Longevity
  40. RCA PA amp SA752LO...
  41. Running preamp into acive speakers with cap input
  42. Putting Stock In Carver?
  43. Weak treble
  44. About GU50 PP in UL with separate G2 winding and supply
  45. tube tester comparison
  46. Volume control after the preamp stage or before ?
  47. COPLAND CTA 401 - upgrade of components ?
  48. 2 amp simulation/dummy load for transformer
  49. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  50. 809 Triodes
  51. PSRR
  52. Looking for a schematic or link to a post
  53. Who makes a Williamson output transformer ?
  54. Help with an S5 K12-G Tube Amp
  55. Turing's new tube amps. Please give staff about.
  56. Life Expectancy of DHT's
  57. 6GB8 data sheet translation needed
  58. Full Wave Rectifiers: Center Tapped vs. Bridged
  59. Vectorscope?
  60. Apple macmini become to 6MD8 tube amp
  61. Potting Wax?
  62. How do I repair my Tube Amp?
  63. asr433 simple problem (i hope)
  64. Russian Tube Codes
  65. Help: Driver Stage Design
  66. PAS Power Transformer Capability
  67. 7A5 tube...a small marvel !!!
  68. phono preamp for the s5 electronics model 16ls amp
  69. Screen Stopper Blew
  70. Hickok 533 and 6dj8/6922
  71. OTL design opinion
  72. Pile of TEK scopes.........what do I keep?
  73. Inclusion of an oscilloscope on tester
  74. 6V6SE - Suggestions?
  75. Heretical Line Stage: BOM?
  76. Tube amp to drive 4 ohm headphones?
  77. Another TVA1 - KT88 power amplifier
  78. 845 parafeed
  79. datasheet 6P44C
  80. ecc85 tube buffer or line stage?
  81. Valvestate 8080 That's been dog Peed...
  82. pre war gibson eh125 schematic question
  83. "An elegant full function tube preamp mated to 1st rate SS power amp"
  84. How to select a good Hifi 12AX7 tube?
  85. LTP with CCS and negative PS
  86. Odd phase splitter
  87. Yet Another Hybrid Amplifier
  88. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  89. Heater to Cathode voltage e88cc
  90. ASR-433
  91. Marantz 8B phase splitter
  92. Silvertone 1485 - Output Transformer advice
  93. Bob Latino ST120 Down
  94. SS phase splitters?
  95. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  96. SE 6L6 to KT88
  97. HT power supply design
  98. Good tubes for concertina - 4P1L maybe?
  99. Powr supply question
  100. What is wrong with this Amplifier?
  101. Palmer DREI - Three SE Output Tubes Together?
  102. Heathkit TC-2 Checker and KT88s
  103. my Dummy Amp Contraption
  104. HF Oscillation Heat-Up Spk's Magnet!?
  105. Triode calculations
  106. Western Electric 131
  107. Electrolytic vs. Film 2A3 Cathode Bypass?
  108. Sylvania JAN 6SN7WGTA, late 1970's
  109. TV7 tester problem with 6CB5A tube
  110. Stromberg-Carlson AP-55
  111. SHUGUANG 2A3
  112. Circuit breaker help.
  113. Recommend me a bookshelf speaker for 5W
  114. Monarch STA 100X weird?
  115. 1954 US Army "Sound Repeater" amplifier
  116. 6N7...this configuration work ?
  117. RIAA Active EQ
  118. Direct Coupled E-Linear Amp
  119. Double Triode Mu
  120. Music Angel kt88 new pcbs problem
  121. EL503 replacement?
  122. Reducing gain in a SRPP circuit with ECC82?
  123. 12XX7 Triodes
  124. Output Tx just for interest
  125. Valab in Taiwan output transformers
  126. Impedance Question
  127. How to include a dual triode tube in a KiCAD schematic?
  128. 12U7 SPICE Model
  129. Phono Stage Woofer Bounce
  130. Problem with new L3-3 please help!
  131. Edcor output transformer...very nice !!!
  132. SE Hybrid Amp "The Lunatic one"
  133. Marantz 8b power transformer B+ down 30%
  134. Single or paralell trafo?
  135. CJ PV 5 Impedance?
  136. ECF80 driving EL84 PP
  137. Luhdahl LL1660S what current rating for D3a driver?
  138. what's that cap?
  139. SE EL84 Component placement Suggestion
  140. How to make a cheap 6N3 Buffer Amp even better?
  141. buying Tube Amps need advice/opinions
  142. Best driver and Power 6V6 By Officina
  143. dynaco pas3
  144. 5U4GB full-wave bridge, stumped
  145. Complete Module Driver and Power with DHT 6B4G
  146. HELP NEEDED for a 6CA4/EZ81 power supply
  147. OT for 2A3 PSE w/Parafeed
  148. More Dynaco Mark VI Questions
  149. curious feedback in circuit of Pioneer SM-Q300 receiver
  150. Hytron 2E25 - Other forgotten and marvelous tube !
  151. need tube upgrade advice please sir
  152. buyer beware
  153. Analog tube for DAC & Power supply with valve EZ_80
  154. JJ 5y3S pin 1??
  155. My first Sansui AU-111 Rebuild
  156. Capacitor-induced distortion
  157. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  158. Common Cathode as DAC output
  159. Pre-Amp with russian tubes 1j24b
  160. How to calculate, the output impedance of a tube with grounded grid
  161. How To Draw Load Line With Output Transformer ?
  162. Inter electrode capacitance.
  163. My amp is an oscillator !
  164. TESLA PL509
  165. What value for Va ?
  166. Help selecting an input transformer ?
  167. Should same valves grid voltage vary much ?
  168. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  169. Restoring a Scott 299-B
  170. Latest project, 80 watt valve amplifier
  171. PP Amp Doubling Output Power
  172. Setting up a Wilson current mirror as a differential load
  173. interested in tube amps
  174. Baldwin 45P amp project
  175. DIYGene's Jadis JP-200 Preamp Kit
  176. Need design/schematic for 6H30P driven 6C33C SET
  177. Substitute 6AQ8 for my 6CG7's
  178. 6bq5 tubes in a Heathkit AA-151
  179. Marantz 8b restoration: colour code, prints, schematics
  180. Show me your screen drive circuits
  181. Potting Compounds
  182. Chokes in the ground "plane"
  183. OTL idea
  184. Balance control tip for newbee's
  185. Ebay win - is this any good?
  186. 6sn7 pse amp for altec lansing 604E
  187. "Cockeyed Bridge" with damper diode?
  188. Mac 2100 Hybrid
  189. Single-Stage Hybrid Cascode Power Amp
  190. New to Tube amps, heathkit question
  191. 6AS7 OTL PL build
  192. On Bootstrapping diodes for UL G2 MOSFET
  193. Chasing Aikido "hum"
  194. valve monobloc designs
  195. 7A5 is a good driver for the 300B ?
  196. Parallel Push Pull 6V6 design
  197. Black cat caps?
  198. Soundstage
  199. Brains & Brawn CF : where's the catch ?
  200. ISO-TANGO to quit
  201. Shifting reflective loads using secondary taps?
  202. VTL -- 20 6550's a side and their xfmrs
  203. "Diamond" tube preamp with 12au7
  204. Wich factory made this tube ?
  205. Bootstrapped Cathode Coupled Amplifier
  206. OTL 6AS7
  207. Diode performance testing
  208. Monacor SA-10
  209. Volume Control Hum
  210. Stromberg-Carlson AP-50
  211. 5 wire and 3 wire output transformer change ?
  212. Yaqin mc 10L
  213. Can OTL Ciclotron amp use solid state regulated PS?
  214. Cross-channel overtalk with strange effects
  215. Why 6.3V?
  216. KT88 Williamson Design Questions
  217. Winding a center-tap secondary
  218. HV delay switch
  219. McIntosh MC-30...Balanced Input Feasible?
  220. Designing line driver / pre-amp
  221. Bucking and boosting a tube power transformer
  222. 33A-158M
  223. All DHT integrated amp
  224. 6N1P
  225. basic query - Pete Millett 807 board.
  226. Tube Tester with undocumented tubes
  227. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  228. EI yugoslavia gone forever.
  229. Quicksilver 8417 Design - Stay with it or modify?
  230. Looking for some advice on odd preamp noise issue
  231. Tubes in an opamp feedback loop ?
  232. Jensen P-P Cathode Follower
  233. Cathode follower rigorous definition.
  234. Little Bear P3 ?!?! opinions ?
  235. NOS GU-81
  236. OPT endbell color!
  237. Music Angel kt88 with unbalanced output.. help me!
  238. Heater Supply Center Tap
  239. SCA-35 Pot noise
  240. Conrad Johnson MV 55
  241. Comments on 6C33C-B ARG OTL
  242. Construction tips for high voltage amps.
  243. 6L6 bias
  244. came across Mingda Tube king mono blocks
  245. a lot of noise
  246. El84 pp Amp problem
  247. Power on filament current surge question
  248. Its likely a repost but W/e
  249. Scored some 8236's....
  250. What causes valve to glow red inside ?

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