old Amplifier LA4505 from sanyo Semiconductor

did you have this old IC ?... i rebuild this stuff, just replace dried Capacitor.. and yes ..!! still ALIVE !!!
Schema
Protoboard
believe me it's works, someday i upload that board :-)

Mini Amplifier USB Powered 5 Volt - 2N4401

SKema
here PCB Design by friend, thanks for Dudung.

i have old IC LM 3900 , is that quad OP AMP ?.. okey then i want make it small VU LED meter use only 4 LEDs.
Need scheme ? sorry it's only draft, i edited from LM3915 scheme..

Protoboard

NOT YET BUILD.

LED audio meter using LB 1403

scheme :
try find yourself :)

FInished project :

video pre-amplifier ( three output)

http://www.eleccircuit.com/video-amplifier-splitter-by-transistor-bd137-bc547-bc557/