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  1. Need schematic for EL84 PSE
  2. Old OTL circuite question
  3. sub out in my 300b se? Help me please.
  4. Interstage OPT to drive 6V6 pp amplifier
  5. Voltage label on schematics...
  6. mystery purchase of the day
  7. What about the Eimac 3-500z?
  8. How much DC offset can a tube preamp take?
  9. Low voltage drop pass tube
  10. Convergent Legend Preamp
  11. vintage tube amp repair help
  12. Lasers, Tubes, and PCB
  13. 76 operating point/max plate rating?
  14. Mullard Made Tube Source Query
  15. SE Amp with NO HUM
  16. Frrank's 6Sn7 preamp...take out coupling cap??
  17. Need Schematic or help Newcomb AV-10 turntable tube amp
  18. Tube kits for beginners
  19. Lectron JH50 Tube Bias
  20. Removing LEDs from chinese amp
  21. Project madness
  22. chinese and tube Depot amps?
  23. eml 520 v2 info
  24. Rogers Cadet III Phono Stage
  25. Modding Roberts/Akai mono block tube amps
  26. Full-wave bridge
  27. Output transformers and frequency response
  28. Class A2 SET using source follower driver
  29. Rectifier that drops lots of volts?
  30. switch snubber on preamp
  31. HV supply please comment before building
  32. This is cool
  33. Gold Lion KT88 Reissues
  34. 6F8G's any good?
  35. Tung-Sol (new production) 6550s
  36. Curves, curves, and more curves
  37. Help for new design..
  38. OTL SE - Help Wanted with Idea
  39. OPTs causing crosstalk?
  40. KT88 Usable range
  41. How to change tubes ??? (NEWBIE)
  42. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  43. Need some help with potentiometer.
  44. Pinout of a UTC CG-422 power transformer
  45. Simple EL34 SET; advice?
  46. Popping Noise = Clipping ?
  47. PSU for an 813 SE
  48. Single Stage Line Amp (Diff Amp) Tube?
  49. EL 84 Edicron UK vs JJ
  50. calculating HF rolloff at 20kHz from input impedance
  51. Need info on RCA 813 used in Tube Amp
  52. Baby Huey: shunt feedback doesn't work to me
  53. Audio Innovations 800mkiii output trans needed
  54. High voltage psu
  55. First tubeamp, dont laugh too hard
  56. Newbie building d3A DRD 300B
  57. small practice amp with master volume
  58. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  59. gu81m
  60. 6sc7 vs. 6su7 in LTPI duty
  61. Cascode with ECC81(12AT7)=>Morgan Jones
  62. Where can I find these?
  63. Kofi Annan in: "Seven-Pound Mono Amp"
  64. Kofi Annan in: "Surf Bassin'"
  65. McIntosh Re-cap Questions
  66. 5881
  67. Cary Audio V12 - Schematic - Needed
  68. Anyone tried this method for OTL?
  69. Can't simulate 12AX7 with multisim 7
  70. new member, and some Electrohome PA100Mk1's
  71. Edcor Interstage for Phase Splitter?
  72. Why isodyne splitters not popular...
  73. Low Voltage phono stage for newbies
  74. 6EJ7 or 6EH7 triode strapped?
  75. New Guy
  76. Counterpoint SA20 Mosfet output rail voltage
  77. Silly Chassis Punch Question...
  78. Tube Noob question
  79. tube shop in the uk
  80. Choke question
  81. Self Bias and Fixed Bias for Big Tubes?
  82. Stromberg Carlson ASR433 Question
  83. CCS better in plate or cathode
  84. Audiophile term: "HIP test"
  85. Advice needed for tweaking S5 Electronics K-12G diy kit
  86. TV Damper Diodes
  87. 813 SE circuit,will it work?
  88. Looking for tube for application
  89. Finger joints vs. screw and glue
  90. 2C36 plate curve
  91. EL34 as preamp
  92. with DHT rectifiers, is the "+" side of the power supply...
  93. Paging Unison845
  94. Quad II - Forty
  95. my amplifiers
  96. Cheap spud amp
  97. Interesting 6L6GC Test Report
  98. 4D32 SE amplifier... help!
  99. 6AS7G with grid current?
  100. bypass switch for preamp
  101. Grounded Grid vs. Aikido
  102. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  103. Could this work? (PP amp with CCS)
  104. about newbies...and textbook..
  105. NFB capacitor to screen tap on ST-70 ?
  106. Aikido question
  107. Help with amp #2, 300B or 6550?
  108. Russian 807
  109. Searching Sound Valves M40 Monoblocks schematic
  110. Make: Bell P/A - Model: Carillon '35'
  111. Octal tubes for 7695-style matrix amp?
  112. SET recommendations
  113. Dynaco ST35
  114. Scott LK-72A is ALIVE
  115. 5687 as a single stage SE amp
  116. Changing two stereo amps into two monos
  117. UL Feedback Tap Calculation
  118. Octal pentode sub for ef86?
  119. to mach1: tubecad regulator using tl431
  120. Thermal management: it this not really of concern?
  121. Signal phase shift through a tube amp
  122. Common-mode EI PS Chokes
  123. Signal pentode in current production
  124. Pentode vs Ultralinear
  125. Bogen CHA33/CHA33Y
  126. Sheet Metal Gauge
  127. Help with 6N6p
  128. Can anyone help, identifing selenium bridge hookup please.
  129. E182CC substitution ?
  130. Face Plate Printing and Silk Screening
  131. Funky reading 12B4A?
  132. Sovtek 5Y3 Issues
  133. from lilliput to gargantua (just for fun)
  134. Formula for calculating HT voltage?
  135. DIY Headamp for Sennheiser-650?
  136. Nuera Tube Amps
  137. Amplifier identification
  138. Perfect tube regulator
  139. Value of grid leak resistor
  140. Comments on this circuit
  141. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  142. Heater current monitoring...
  143. on-off switch position in PSU
  144. A better LDO heater regulator
  145. any feedback on Russian gas regulators like SG4S and etc.?
  146. Some cathode follower questions
  147. Anyone please explain"What is an A1,A2 in SE amp?
  148. What is the correct plate voltage in this circuit?
  149. Any1 have an Osmond PCB library for tubes?
  150. best type cap for preamp PSU
  151. Steve Bench PP loadlines
  152. Spice Error
  153. Anyone have a Welborne Labs amp?
  154. Please help out a Noobie...
  155. wellborne labs
  156. best schematic designer for tubes?
  157. hum in 1 channel
  158. B+ time delay relay
  159. something is wrong with the shunt regulator
  160. Suggestions for a high end tube amp kit
  161. Conrad Johnson PV 7 problem
  162. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  163. Please help: no sound and blown fuse
  164. sparking Output transformer In Webcor 14x240 Amp
  165. Designing my very first tube amp...
  166. Diode bridge for Valve Buffered GC
  167. 6S41S (6C41C) Amplifier
  168. audio research sp11 upgrade help please
  169. The good, the bad, and the ugly OTL amplifiers
  170. Z2b tube rectifier
  171. Sparks inside GZ34
  172. Help with EV4417 6cm5/EL36
  173. My Cornet2 Tube Phono Preamp
  174. bright switch to bias circuit?
  175. Regulated AC...thought some of you might be interested
  176. Aikido PSU - integrated or standalone???
  177. Frank Philipse's tube site
  178. World' smallest GM-70 set
  179. Question on output hum on tube amp?
  180. Aikido Preamp
  181. Argh!!
  182. EL84 bias point
  183. Coupling cap rating
  184. outstanding book??
  185. when the datasheet says "vertical mounting: up or down", does it mean...
  186. Did I get in over my head too soon?!?
  187. Parallel output tubes
  188. Dropping filament volts/ L-W ramblings
  189. Rogers Cadet III Power problem ?
  190. about bi-cap
  191. HOT Iron ?
  192. how to set current in G Pimm's latest self-biasing CCS circuit?
  193. Low pass active tube crossover
  194. Ecological recycling amplifier (6CU6)
  195. Need ECF80 / 6BL8 tube spice 3f4 model
  196. Capacitor above chassis
  197. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  198. Transmitter tubes
  199. what are the advantages of double core output transformers vs EI ?
  200. What is a reasonable amount ripple voltage for a 300B?
  201. "Old Like" sound transformer with a Tube !
  202. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  203. P-P resistance oddity
  204. Tube preamp vs. solid state
  205. 6l6 penthode triode
  206. Rising hum when turntable is plugged into preamp ??
  207. 6SL7 or 6SL7GT for broken Tubalizer
  208. Aikido PCB and AC filaments.
  209. Help with 300b proyect.
  210. 6P14P Amp Scratch Build
  211. 6GH8 - A Little Off?
  212. design and personality
  213. An all DHT push pull amp.
  214. Junk Pile Linestage
  215. need tube rectifier info
  216. Question on voltages
  217. How to change this design from penthode to triode or UL
  218. what glass-ware program?
  219. aikido 12b4 input 6sn7 output???
  220. GZ34 and temperature
  221. transmitter tube amp
  222. resistor and capacitor values for Aikido preamp
  223. need opinion on 2nd hand AF analyzers prices
  224. DH rectifier hookup.
  225. WE 310A vs. Russian 310A in WE91
  226. Question on the installation of LL1668 plate choke
  227. max plate voltage rating in tube datasheet
  228. choosing cap values for aikido
  229. Tubes in the Intermediate Stage
  230. c3m + 300b + miller capacitance
  231. How do I bias up a constant current series filament circuit?
  232. The perfect phono preamp.
  233. Got my 6BG6GA's last night
  234. Tubes4HiFi SP-6 preamp
  235. Shuguang 807s?
  236. LX-72A Sanity Check for Noooobie?
  237. Convert EL84 to 6V6? Anyone try this?
  238. PC96
  239. Ultrapath output transformers
  240. Grant RIAA phono with 12AX7/ECC83
  241. Ra-a??
  242. Help with my el509 amp almost done but with one problem.
  243. McIntosh chassis help needed
  244. Tube Voltage Regulator Design
  245. DC Tube Amplifiers
  246. Coupling cap voltage rating
  247. Anyone experienced in the 76 tube?
  248. aikido thump
  249. bypassing preamp board in integrated amp
  250. Mallory FP 2x30/500 for Scott LX-72 - NOOB

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