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  1. Another TVA1 - KT88 power amplifier
  2. 845 parafeed
  3. datasheet 6P44C
  4. ecc85 tube buffer or line stage?
  5. Valvestate 8080 That's been dog Peed...
  6. pre war gibson eh125 schematic question
  7. "An elegant full function tube preamp mated to 1st rate SS power amp"
  8. How to select a good Hifi 12AX7 tube?
  9. LTP with CCS and negative PS
  10. Odd phase splitter
  11. Yet Another Hybrid Amplifier
  12. what Lundahl OPT for headphone 2A3 amp? (for HD800)
  13. Heater to Cathode voltage e88cc
  14. ASR-433
  15. Marantz 8B phase splitter
  16. Silvertone 1485 - Output Transformer advice
  17. Bob Latino ST120 Down
  18. SS phase splitters?
  19. Supply Filtering and why Capacitance Multipliers are NOT the Answer
  20. SE 6L6 to KT88
  21. HT power supply design
  22. Good tubes for concertina - 4P1L maybe?
  23. Powr supply question
  24. What is wrong with this Amplifier?
  25. Palmer DREI - Three SE Output Tubes Together?
  26. Heathkit TC-2 Checker and KT88s
  27. my Dummy Amp Contraption
  28. HF Oscillation Heat-Up Spk's Magnet!?
  29. Triode calculations
  30. Western Electric 131
  31. Electrolytic vs. Film 2A3 Cathode Bypass?
  32. Sylvania JAN 6SN7WGTA, late 1970's
  33. TV7 tester problem with 6CB5A tube
  34. Stromberg-Carlson AP-55
  35. SHUGUANG 2A3
  36. Circuit breaker help.
  37. Recommend me a bookshelf speaker for 5W
  38. Monarch STA 100X weird?
  39. 1954 US Army "Sound Repeater" amplifier
  40. 6N7...this configuration work ?
  41. RIAA Active EQ
  42. Direct Coupled E-Linear Amp
  43. Double Triode Mu
  44. Music Angel kt88 new pcbs problem
  45. EL503 replacement?
  46. Reducing gain in a SRPP circuit with ECC82?
  47. 12XX7 Triodes
  48. Output Tx just for interest
  49. Valab in Taiwan output transformers
  50. Impedance Question
  51. How to include a dual triode tube in a KiCAD schematic?
  52. 12U7 SPICE Model
  53. Phono Stage Woofer Bounce
  54. Problem with new L3-3 please help!
  55. Edcor output transformer...very nice !!!
  56. SE Hybrid Amp "The Lunatic one"
  57. Marantz 8b power transformer B+ down 30%
  58. Single or paralell trafo?
  59. CJ PV 5 Impedance?
  60. ECF80 driving EL84 PP
  61. Luhdahl LL1660S what current rating for D3a driver?
  62. what's that cap?
  63. SE EL84 Component placement Suggestion
  64. How to make a cheap 6N3 Buffer Amp even better?
  65. buying Tube Amps need advice/opinions
  66. Best driver and Power 6V6 By Officina
  67. dynaco pas3
  68. 5U4GB full-wave bridge, stumped
  69. Complete Module Driver and Power with DHT 6B4G
  70. HELP NEEDED for a 6CA4/EZ81 power supply
  71. OT for 2A3 PSE w/Parafeed
  72. More Dynaco Mark VI Questions
  73. curious feedback in circuit of Pioneer SM-Q300 receiver
  74. Hytron 2E25 - Other forgotten and marvelous tube !
  75. need tube upgrade advice please sir
  76. buyer beware
  77. Analog tube for DAC & Power supply with valve EZ_80
  78. JJ 5y3S pin 1??
  79. My first Sansui AU-111 Rebuild
  80. Capacitor-induced distortion
  81. Elevating Heater Voltage with multiple Transformer Heater Secondaries
  82. Common Cathode as DAC output
  83. Pre-Amp with russian tubes 1j24b
  84. How to calculate, the output impedance of a tube with grounded grid
  85. How To Draw Load Line With Output Transformer ?
  86. Inter electrode capacitance.
  87. My amp is an oscillator !
  88. TESLA PL509
  89. What value for Va ?
  90. Help selecting an input transformer ?
  91. Should same valves grid voltage vary much ?
  92. Driver options for 300B-XLS (4P1L-IS-4P1L-IS)
  93. Restoring a Scott 299-B
  94. Latest project, 80 watt valve amplifier
  95. PP Amp Doubling Output Power
  96. Setting up a Wilson current mirror as a differential load
  97. interested in tube amps
  98. Baldwin 45P amp project
  99. DIYGene's Jadis JP-200 Preamp Kit
  100. Need design/schematic for 6H30P driven 6C33C SET
  101. Substitute 6AQ8 for my 6CG7's
  102. 6bq5 tubes in a Heathkit AA-151
  103. Marantz 8b restoration: colour code, prints, schematics
  104. Show me your screen drive circuits
  105. Potting Compounds
  106. Chokes in the ground "plane"
  107. OTL idea
  108. Balance control tip for newbee's
  109. Ebay win - is this any good?
  110. 6sn7 pse amp for altec lansing 604E
  111. "Cockeyed Bridge" with damper diode?
  112. Mac 2100 Hybrid
  113. Single-Stage Hybrid Cascode Power Amp
  114. New to Tube amps, heathkit question
  115. 6AS7 OTL PL build
  116. On Bootstrapping diodes for UL G2 MOSFET
  117. Chasing Aikido "hum"
  118. valve monobloc designs
  119. 7A5 is a good driver for the 300B ?
  120. Parallel Push Pull 6V6 design
  121. Black cat caps?
  122. Soundstage
  123. Brains & Brawn CF : where's the catch ?
  124. ISO-TANGO to quit
  125. Shifting reflective loads using secondary taps?
  126. VTL -- 20 6550's a side and their xfmrs
  127. "Diamond" tube preamp with 12au7
  128. Wich factory made this tube ?
  129. Bootstrapped Cathode Coupled Amplifier
  130. OTL 6AS7
  131. Diode performance testing
  132. Monacor SA-10
  133. Volume Control Hum
  134. Stromberg-Carlson AP-50
  135. 5 wire and 3 wire output transformer change ?
  136. Yaqin mc 10L
  137. Can OTL Ciclotron amp use solid state regulated PS?
  138. Cross-channel overtalk with strange effects
  139. Why 6.3V?
  140. KT88 Williamson Design Questions
  141. Winding a center-tap secondary
  142. HV delay switch
  143. McIntosh MC-30...Balanced Input Feasible?
  144. Designing line driver / pre-amp
  145. Bucking and boosting a tube power transformer
  146. 33A-158M
  147. All DHT integrated amp
  148. 6N1P
  149. basic query - Pete Millett 807 board.
  150. Tube Tester with undocumented tubes
  151. "Fritz" the Boston/RI tube guy - ANYONE know what became of him??
  152. EI yugoslavia gone forever.
  153. Quicksilver 8417 Design - Stay with it or modify?
  154. Looking for some advice on odd preamp noise issue
  155. Tubes in an opamp feedback loop ?
  156. Jensen P-P Cathode Follower
  157. Cathode follower rigorous definition.
  158. Little Bear P3 ?!?! opinions ?
  159. NOS GU-81
  160. OPT endbell color!
  161. Music Angel kt88 with unbalanced output.. help me!
  162. Heater Supply Center Tap
  163. SCA-35 Pot noise
  164. Conrad Johnson MV 55
  165. Comments on 6C33C-B ARG OTL
  166. Construction tips for high voltage amps.
  167. 6L6 bias
  168. came across Mingda Tube king mono blocks
  169. a lot of noise
  170. El84 pp Amp problem
  171. Power on filament current surge question
  172. Its likely a repost but W/e
  173. Scored some 8236's....
  174. What causes valve to glow red inside ?
  175. Tubes and radioisotope decay
  176. PSUDII Question
  177. DIY Bias Buddy
  178. Recommend me a high power OPT
  179. Design Shorting Tubes?
  180. Microsoft Tube Amp and Speakers
  181. S5 K-16LS Tone Control - Help Please
  182. SEUL Circuit for PL519, has anyone here built this?
  183. Motorola three channel
  184. Your own builders book
  185. WE91A - high frequency roll off
  186. Dynaco MarkIII dimensions
  187. Leak TL12+ smoothing capacitors.
  188. Crate Palomino V8 potentiometer replacement
  189. Question about failing 6550 output
  190. Need help converting Ampex 960 R2R to a preamp...
  191. 5751 SPICE Model -- for Poddwatt II
  192. Configuring an Audio Transformer for 8 Ohmsuring
  193. OTL Blocking cap / RC filter
  194. What do you think..OP Tx
  195. Does anyone have GA399MA.pdf?
  196. New Amp Build, First Post
  197. Twisting HV leads
  198. Phono MC/MM Stage like Audio Space Reference Two RIAA Section
  199. Help with AVO MK IV Meter
  200. Why use a pentode?
  201. Filter choke temperature concerns
  202. Is my output transformer damaged?
  203. Parafeed without a cap
  204. Edcor Transformer Problems
  205. From The Daft Idea Department
  206. Do I need a resistor between plates? pic included.
  207. Tube preamp overheating characteristics?
  208. Valve amplifier sounds great
  209. volume pot hum at low and high volume
  210. Thank You
  211. Help Needed ;)
  212. Mullard EL-34: new vs vintage
  213. A new IC for monitoring tubes
  214. 6L6 transformer on EL84
  215. Output transformer design
  216. Tubes4HiFi preamp questions
  217. Newbie advice - Phono Preamp/1st electronics build
  218. Got a HeathKit, now what to do?
  219. 4P1L push pull amp with Lundahl zero global feedback
  220. 12AQ5 SE Amp Issue
  221. ISO a motorboat
  222. Tube characteristic - Originates from pre or power amp tubes?
  223. swapping console amps...
  224. swapping console amps...
  225. Hum issue in PAS Aikido
  226. Hammond Transformer Warranty
  227. 6CB5 in triode PP?
  228. Input capacitance when tube is not conducting
  229. What would you build with these output transformers?
  230. Need help with new tube for my amp
  231. Does the method for loading the plate affect gain of the stage?
  232. Slightly Sick Amplifier
  233. OP Tx for signal tubes in Headphone amps
  234. Listing of Radio Amateur/HAM Flea Markets In Europe
  235. need mac kit 30 transformer
  236. Is this transformer saturation? (pictures inside)
  237. Did I use the LR8 in this EF86 preamp correctly?
  238. Who recognizes the chassis of this amp
  239. Sweep tubes in Push-Pull-Parallel
  240. EZ125 Quad KT88 Project
  241. Need a help! OPT design assistant software
  242. Ready To Build the Other
  243. Harman Kardon Citation II
  244. Relays for tube voltages
  245. Okay, Can someone suggest if this PSU can work
  246. ELROG 211 and 845 tubes
  247. Has anyone tried this tube preamp
  248. filament choke testing
  249. Grounded-Grid MC Head Amp for 2x PC900 and Lyra Delos
  250. output transformer sizing - is there such a thing as to big?

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