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  1. 5Y3 tube rectifier
  2. Triode or ultraliner connected ?
  3. What is the "Tube Sound"?
  4. Here are some 12B4A, CCS, Preamp Circuit and Spice models
  5. Which KT88 ?
  6. Why make a tube amp that sounds like a SS amp?
  7. Mark VI power Supply
  8. audioromy fu29 - not working, repair or scrap?
  9. Valve amp questions for someone new to them.
  10. Driving Parallel Tubes
  11. Matching quad set
  12. Anyone listen a 46 in UL mode ?
  13. McIntosh MC30 vs. Fisher 80-AZ
  14. Voltage Divider at input to Power Amp
  15. Checking EL84 with Eico 625
  16. Dynaclone ST70 6F2 Alternative
  17. Nobsound MS10D
  18. Need Help - Monoblock Power Amplifier EL 34
  19. Replace output transformers in Dynaco ST70
  20. 6P14P-EV in my Simple P-P
  21. Help finding a new tube headphone amp
  22. Cost of building from scratch
  23. Help with loadlines in p.s.e.
  24. Simplified pentode Loftin-White with plate-plate feedback
  25. Inductor Fed VR Tube
  26. Screen Grid Peak Voltage
  27. Unknown (Westrex?) AE285 KT66 cinema amplifier
  28. Has anyone dual-monoed a Stereo 70?
  29. CV2799 (Mullard) QQV04-20 parallel single-ended audio amplifier
  30. Pentode G1 series resistance effects.
  31. MUZAK 975a 75watt, 50s
  32. Hybrid SS/Tube Balanced Mic Pre
  33. Adding a baland pot to cathodes on a cathode biased amp?
  34. Is the 8532W a substitute for 8532?
  35. Low cost class A Hi-Fi amplifier 807 S.E. Ultralinear - Pentode drivers [6G6G]
  36. Configuring 2A3 Driver for 2A3 PSE
  37. Integrated Tube Amp opinion
  38. Ultra-Linear vs. Pentode Longevity
  39. RCA PA amp SA752LO...
  40. Running preamp into acive speakers with cap input
  41. Putting Stock In Carver?
  42. Weak treble
  43. About GU50 PP in UL with separate G2 winding and supply
  44. Volume control after the preamp stage or before ?
  45. COPLAND CTA 401 - upgrade of components ?
  46. 2 amp simulation/dummy load for transformer
  47. Optimal Operating Point for E280F Driver for 300B Single End Amplifier
  48. 809 Triodes
  49. PSRR
  50. Looking for a schematic or link to a post
  51. Who makes a Williamson output transformer ?
  52. Help with an S5 K12-G Tube Amp
  53. Turing's new tube amps. Please give staff about.
  54. Life Expectancy of DHT's
  55. 6GB8 data sheet translation needed
  56. Full Wave Rectifiers: Center Tapped vs. Bridged
  57. Vectorscope?
  58. Apple macmini become to 6MD8 tube amp
  59. Potting Wax?
  60. How do I repair my Tube Amp?
  61. asr433 simple problem (i hope)
  62. Russian Tube Codes
  63. Help: Driver Stage Design
  64. PAS Power Transformer Capability
  65. 7A5 tube...a small marvel !!!
  66. phono preamp for the s5 electronics model 16ls amp
  67. Screen Stopper Blew
  68. OTL design opinion
  69. Pile of TEK scopes.........what do I keep?
  70. Inclusion of an oscilloscope on tester
  71. 6V6SE - Suggestions?
  72. Heretical Line Stage: BOM?
  73. Tube amp to drive 4 ohm headphones?
  74. Another TVA1 - KT88 power amplifier
  75. 845 parafeed
  76. datasheet 6P44C
  77. ecc85 tube buffer or line stage?
  78. Valvestate 8080 That's been dog Peed...
  79. "An elegant full function tube preamp mated to 1st rate SS power amp"
  80. How to select a good Hifi 12AX7 tube?
  81. LTP with CCS and negative PS
  82. Odd phase splitter
  83. Yet Another Hybrid Amplifier
  84. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  85. Heater to Cathode voltage e88cc
  86. ASR-433
  87. Marantz 8B phase splitter
  88. Bob Latino ST120 Down
  89. SS phase splitters?
  90. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  91. SE 6L6 to KT88
  92. HT power supply design
  93. Good tubes for concertina - 4P1L maybe?
  94. Powr supply question
  95. What is wrong with this Amplifier?
  96. Palmer DREI - Three SE Output Tubes Together?
  97. Heathkit TC-2 Checker and KT88s
  98. my Dummy Amp Contraption
  99. HF Oscillation Heat-Up Spk's Magnet!?
  100. Triode calculations
  101. Western Electric 131
  102. Electrolytic vs. Film 2A3 Cathode Bypass?
  103. Sylvania JAN 6SN7WGTA, late 1970's
  104. Stromberg-Carlson AP-55
  105. SHUGUANG 2A3
  106. Circuit breaker help.
  107. Recommend me a bookshelf speaker for 5W
  108. Monarch STA 100X weird?
  109. 1954 US Army "Sound Repeater" amplifier
  110. 6N7...this configuration work ?
  111. RIAA Active EQ
  112. Direct Coupled E-Linear Amp
  113. Double Triode Mu
  114. Music Angel kt88 new pcbs problem
  115. EL503 replacement?
  116. Reducing gain in a SRPP circuit with ECC82?
  117. 12XX7 Triodes
  118. Output Tx just for interest
  119. Valab in Taiwan output transformers
  120. Impedance Question
  121. How to include a dual triode tube in a KiCAD schematic?
  122. 12U7 SPICE Model
  123. Phono Stage Woofer Bounce
  124. Edcor output transformer...very nice !!!
  125. SE Hybrid Amp "The Lunatic one"
  126. Marantz 8b power transformer B+ down 30%
  127. Single or paralell trafo?
  128. CJ PV 5 Impedance?
  129. ECF80 driving EL84 PP
  130. Luhdahl LL1660S what current rating for D3a driver?
  131. what's that cap?
  132. SE EL84 Component placement Suggestion
  133. How to make a cheap 6N3 Buffer Amp even better?
  134. buying Tube Amps need advice/opinions
  135. dynaco pas3
  136. 5U4GB full-wave bridge, stumped
  137. HELP NEEDED for a 6CA4/EZ81 power supply
  138. OT for 2A3 PSE w/Parafeed
  139. More Dynaco Mark VI Questions
  140. curious feedback in circuit of Pioneer SM-Q300 receiver
  141. Hytron 2E25 - Other forgotten and marvelous tube !
  142. need tube upgrade advice please sir
  143. buyer beware
  144. JJ 5y3S pin 1??
  145. My first Sansui AU-111 Rebuild
  146. Capacitor-induced distortion
  147. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  148. Common Cathode as DAC output
  149. Pre-Amp with russian tubes 1j24b
  150. How to calculate, the output impedance of a tube with grounded grid
  151. How To Draw Load Line With Output Transformer ?
  152. Inter electrode capacitance.
  153. My amp is an oscillator !
  154. TESLA PL509
  155. What value for Va ?
  156. Help selecting an input transformer ?
  157. Should same valves grid voltage vary much ?
  158. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  159. Restoring a Scott 299-B
  160. Latest project, 80 watt valve amplifier
  161. PP Amp Doubling Output Power
  162. Setting up a Wilson current mirror as a differential load
  163. interested in tube amps
  164. Baldwin 45P amp project
  165. DIYGene's Jadis JP-200 Preamp Kit
  166. Need design/schematic for 6H30P driven 6C33C SET
  167. Substitute 6AQ8 for my 6CG7's
  168. 6bq5 tubes in a Heathkit AA-151
  169. Marantz 8b restoration: colour code, prints, schematics
  170. Show me your screen drive circuits
  171. Potting Compounds
  172. Chokes in the ground "plane"
  173. OTL idea
  174. Balance control tip for newbee's
  175. Ebay win - is this any good?
  176. 6sn7 pse amp for altec lansing 604E
  177. "Cockeyed Bridge" with damper diode?
  178. Mac 2100 Hybrid
  179. Single-Stage Hybrid Cascode Power Amp
  180. New to Tube amps, heathkit question
  181. 6AS7 OTL PL build
  182. On Bootstrapping diodes for UL G2 MOSFET
  183. Chasing Aikido "hum"
  184. valve monobloc designs
  185. 7A5 is a good driver for the 300B ?
  186. Parallel Push Pull 6V6 design
  187. Soundstage
  188. Brains & Brawn CF : where's the catch ?
  189. ISO-TANGO to quit
  190. Shifting reflective loads using secondary taps?
  191. VTL -- 20 6550's a side and their xfmrs
  192. "Diamond" tube preamp with 12au7
  193. Wich factory made this tube ?
  194. Bootstrapped Cathode Coupled Amplifier
  195. OTL 6AS7
  196. Diode performance testing
  197. Monacor SA-10
  198. Volume Control Hum
  199. Stromberg-Carlson AP-50
  200. 5 wire and 3 wire output transformer change ?
  201. Yaqin mc 10L
  202. Can OTL Ciclotron amp use solid state regulated PS?
  203. Cross-channel overtalk with strange effects
  204. Why 6.3V?
  205. KT88 Williamson Design Questions
  206. Winding a center-tap secondary
  207. HV delay switch
  208. McIntosh MC-30...Balanced Input Feasible?
  209. Designing line driver / pre-amp
  210. Bucking and boosting a tube power transformer
  211. 33A-158M
  212. All DHT integrated amp
  213. 6N1P
  214. basic query - Pete Millett 807 board.
  215. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  216. EI yugoslavia gone forever.
  217. Quicksilver 8417 Design - Stay with it or modify?
  218. Looking for some advice on odd preamp noise issue
  219. Tubes in an opamp feedback loop ?
  220. Jensen P-P Cathode Follower
  221. Cathode follower rigorous definition.
  222. Little Bear P3 ?!?! opinions ?
  223. NOS GU-81
  224. OPT endbell color!
  225. Music Angel kt88 with unbalanced output.. help me!
  226. Heater Supply Center Tap
  227. SCA-35 Pot noise
  228. Conrad Johnson MV 55
  229. Comments on 6C33C-B ARG OTL
  230. Construction tips for high voltage amps.
  231. 6L6 bias
  232. came across Mingda Tube king mono blocks
  233. a lot of noise
  234. El84 pp Amp problem
  235. Power on filament current surge question
  236. Its likely a repost but W/e
  237. Scored some 8236's....
  238. What causes valve to glow red inside ?
  239. Tubes and radioisotope decay
  240. PSUDII Question
  241. DIY Bias Buddy
  242. Recommend me a high power OPT
  243. Design Shorting Tubes?
  244. Microsoft Tube Amp and Speakers
  245. S5 K-16LS Tone Control - Help Please
  246. SEUL Circuit for PL519, has anyone here built this?
  247. Motorola three channel
  248. Your own builders book
  249. WE91A - high frequency roll off
  250. Dynaco MarkIII dimensions

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