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

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