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  1. Help with loadlines in p.s.e.
  2. Simplified pentode Loftin-White with plate-plate feedback
  3. Inductor Fed VR Tube
  4. Screen Grid Peak Voltage
  5. Unknown (Westrex?) AE285 KT66 cinema amplifier
  6. Has anyone dual-monoed a Stereo 70?
  7. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  8. Pentode G1 series resistance effects.
  9. MUZAK 975a 75watt, 50s
  10. Hybrid SS/Tube Balanced Mic Pre
  11. Adding a baland pot to cathodes on a cathode biased amp?
  12. Is the 8532W a substitute for 8532?
  13. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  14. Configuring 2A3 Driver for 2A3 PSE
  15. Integrated Tube Amp opinion
  16. Ultra-Linear vs. Pentode Longevity
  17. RCA PA amp SA752LO...
  18. Running preamp into acive speakers with cap input
  19. Putting Stock In Carver?
  20. Weak treble
  21. About GU50 PP in UL with separate G2 winding and supply
  22. tube tester comparison
  23. Volume control after the preamp stage or before ?
  24. COPLAND CTA 401 - upgrade of components ?
  25. 2 amp simulation/dummy load for transformer
  26. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  27. 809 Triodes
  28. PSRR
  29. Looking for a schematic or link to a post
  30. Who makes a Williamson output transformer ?
  31. Help with an S5 K12-G Tube Amp
  32. Turing's new tube amps. Please give staff about.
  33. Life Expectancy of DHT's
  34. 6GB8 data sheet translation needed
  35. Full Wave Rectifiers: Center Tapped vs. Bridged
  36. Vectorscope?
  37. Apple macmini become to 6MD8 tube amp
  38. Potting Wax?
  39. How do I repair my Tube Amp?
  40. asr433 simple problem (i hope)
  41. Russian Tube Codes
  42. Help: Driver Stage Design
  43. PAS Power Transformer Capability
  44. 7A5 tube...a small marvel !!!
  45. phono preamp for the s5 electronics model 16ls amp
  46. Screen Stopper Blew
  47. Hickok 533 and 6dj8/6922
  48. OTL design opinion
  49. Pile of TEK scopes.........what do I keep?
  50. Inclusion of an oscilloscope on tester
  51. 6V6SE - Suggestions?
  52. Heretical Line Stage: BOM?
  53. Tube amp to drive 4 ohm headphones?
  54. Another TVA1 - KT88 power amplifier
  55. 845 parafeed
  56. datasheet 6P44C
  57. ecc85 tube buffer or line stage?
  58. Valvestate 8080 That's been dog Peed...
  59. pre war gibson eh125 schematic question
  60. "An elegant full function tube preamp mated to 1st rate SS power amp"
  61. How to select a good Hifi 12AX7 tube?
  62. LTP with CCS and negative PS
  63. Odd phase splitter
  64. Yet Another Hybrid Amplifier
  65. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  66. Heater to Cathode voltage e88cc
  67. ASR-433
  68. Marantz 8B phase splitter
  69. Silvertone 1485 - Output Transformer advice
  70. Bob Latino ST120 Down
  71. SS phase splitters?
  72. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  73. SE 6L6 to KT88
  74. HT power supply design
  75. Good tubes for concertina - 4P1L maybe?
  76. Powr supply question
  77. What is wrong with this Amplifier?
  78. Palmer DREI - Three SE Output Tubes Together?
  79. Heathkit TC-2 Checker and KT88s
  80. my Dummy Amp Contraption
  81. HF Oscillation Heat-Up Spk's Magnet!?
  82. Triode calculations
  83. Western Electric 131
  84. Electrolytic vs. Film 2A3 Cathode Bypass?
  85. Sylvania JAN 6SN7WGTA, late 1970's
  86. TV7 tester problem with 6CB5A tube
  87. Stromberg-Carlson AP-55
  88. SHUGUANG 2A3
  89. Circuit breaker help.
  90. Recommend me a bookshelf speaker for 5W
  91. Monarch STA 100X weird?
  92. 1954 US Army "Sound Repeater" amplifier
  93. 6N7...this configuration work ?
  94. RIAA Active EQ
  95. Direct Coupled E-Linear Amp
  96. Double Triode Mu
  97. Music Angel kt88 new pcbs problem
  98. EL503 replacement?
  99. Reducing gain in a SRPP circuit with ECC82?
  100. 12XX7 Triodes
  101. Output Tx just for interest
  102. Valab in Taiwan output transformers
  103. Impedance Question
  104. How to include a dual triode tube in a KiCAD schematic?
  105. 12U7 SPICE Model
  106. Phono Stage Woofer Bounce
  107. Problem with new L3-3 please help!
  108. Edcor output transformer...very nice !!!
  109. SE Hybrid Amp "The Lunatic one"
  110. Marantz 8b power transformer B+ down 30%
  111. Single or paralell trafo?
  112. CJ PV 5 Impedance?
  113. ECF80 driving EL84 PP
  114. Luhdahl LL1660S what current rating for D3a driver?
  115. what's that cap?
  116. SE EL84 Component placement Suggestion
  117. How to make a cheap 6N3 Buffer Amp even better?
  118. buying Tube Amps need advice/opinions
  119. Best driver and Power 6V6 By Officina
  120. dynaco pas3
  121. 5U4GB full-wave bridge, stumped
  122. Complete Module Driver and Power with DHT 6B4G
  123. HELP NEEDED for a 6CA4/EZ81 power supply
  124. OT for 2A3 PSE w/Parafeed
  125. More Dynaco Mark VI Questions
  126. curious feedback in circuit of Pioneer SM-Q300 receiver
  127. Hytron 2E25 - Other forgotten and marvelous tube !
  128. need tube upgrade advice please sir
  129. buyer beware
  130. Analog tube for DAC & Power supply with valve EZ_80
  131. JJ 5y3S pin 1??
  132. My first Sansui AU-111 Rebuild
  133. Capacitor-induced distortion
  134. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  135. Common Cathode as DAC output
  136. Pre-Amp with russian tubes 1j24b
  137. How to calculate, the output impedance of a tube with grounded grid
  138. How To Draw Load Line With Output Transformer ?
  139. Inter electrode capacitance.
  140. My amp is an oscillator !
  141. TESLA PL509
  142. What value for Va ?
  143. Help selecting an input transformer ?
  144. Should same valves grid voltage vary much ?
  145. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  146. Restoring a Scott 299-B
  147. Latest project, 80 watt valve amplifier
  148. PP Amp Doubling Output Power
  149. Setting up a Wilson current mirror as a differential load
  150. interested in tube amps
  151. Baldwin 45P amp project
  152. DIYGene's Jadis JP-200 Preamp Kit
  153. Need design/schematic for 6H30P driven 6C33C SET
  154. Substitute 6AQ8 for my 6CG7's
  155. 6bq5 tubes in a Heathkit AA-151
  156. Marantz 8b restoration: colour code, prints, schematics
  157. Show me your screen drive circuits
  158. Potting Compounds
  159. Chokes in the ground "plane"
  160. OTL idea
  161. Balance control tip for newbee's
  162. Ebay win - is this any good?
  163. 6sn7 pse amp for altec lansing 604E
  164. "Cockeyed Bridge" with damper diode?
  165. Mac 2100 Hybrid
  166. Single-Stage Hybrid Cascode Power Amp
  167. New to Tube amps, heathkit question
  168. 6AS7 OTL PL build
  169. On Bootstrapping diodes for UL G2 MOSFET
  170. Chasing Aikido "hum"
  171. valve monobloc designs
  172. 7A5 is a good driver for the 300B ?
  173. Parallel Push Pull 6V6 design
  174. Black cat caps?
  175. Soundstage
  176. Brains & Brawn CF : where's the catch ?
  177. ISO-TANGO to quit
  178. Shifting reflective loads using secondary taps?
  179. VTL -- 20 6550's a side and their xfmrs
  180. "Diamond" tube preamp with 12au7
  181. Wich factory made this tube ?
  182. Bootstrapped Cathode Coupled Amplifier
  183. OTL 6AS7
  184. Diode performance testing
  185. Monacor SA-10
  186. Volume Control Hum
  187. Stromberg-Carlson AP-50
  188. 5 wire and 3 wire output transformer change ?
  189. Yaqin mc 10L
  190. Can OTL Ciclotron amp use solid state regulated PS?
  191. Cross-channel overtalk with strange effects
  192. Why 6.3V?
  193. KT88 Williamson Design Questions
  194. Winding a center-tap secondary
  195. HV delay switch
  196. McIntosh MC-30...Balanced Input Feasible?
  197. Designing line driver / pre-amp
  198. Bucking and boosting a tube power transformer
  199. 33A-158M
  200. All DHT integrated amp
  201. 6N1P
  202. basic query - Pete Millett 807 board.
  203. Tube Tester with undocumented tubes
  204. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  205. EI yugoslavia gone forever.
  206. Quicksilver 8417 Design - Stay with it or modify?
  207. Looking for some advice on odd preamp noise issue
  208. Tubes in an opamp feedback loop ?
  209. Jensen P-P Cathode Follower
  210. Cathode follower rigorous definition.
  211. Little Bear P3 ?!?! opinions ?
  212. NOS GU-81
  213. OPT endbell color!
  214. Music Angel kt88 with unbalanced output.. help me!
  215. Heater Supply Center Tap
  216. SCA-35 Pot noise
  217. Conrad Johnson MV 55
  218. Comments on 6C33C-B ARG OTL
  219. Construction tips for high voltage amps.
  220. 6L6 bias
  221. came across Mingda Tube king mono blocks
  222. a lot of noise
  223. El84 pp Amp problem
  224. Power on filament current surge question
  225. Its likely a repost but W/e
  226. Scored some 8236's....
  227. What causes valve to glow red inside ?
  228. Tubes and radioisotope decay
  229. PSUDII Question
  230. DIY Bias Buddy
  231. Recommend me a high power OPT
  232. Design Shorting Tubes?
  233. Microsoft Tube Amp and Speakers
  234. S5 K-16LS Tone Control - Help Please
  235. SEUL Circuit for PL519, has anyone here built this?
  236. Motorola three channel
  237. Your own builders book
  238. WE91A - high frequency roll off
  239. Dynaco MarkIII dimensions
  240. Leak TL12+ smoothing capacitors.
  241. Crate Palomino V8 potentiometer replacement
  242. Question about failing 6550 output
  243. Need help converting Ampex 960 R2R to a preamp...
  244. 5751 SPICE Model -- for Poddwatt II
  245. Configuring an Audio Transformer for 8 Ohmsuring
  246. OTL Blocking cap / RC filter
  247. What do you think..OP Tx
  248. Does anyone have GA399MA.pdf?
  249. New Amp Build, First Post
  250. Twisting HV leads

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