Music in the night

The Voice of Music, circa 1960.

When in doubt, replace the weak 12AX7 tube in the add-on multiplex adapter, which is much less painful of a procedure than Saturday night's project -- changing all the dial lamps in a 35-year-old Marantz receiver. The music in stereo is a little sweeter now, just as the old Marantz shines like new for the first time in years.

This geek minute has been brought to you by black wingtips and white athletic socks. Additional funding for this program has been provided by pocket protectors . . . pocket protectors, because pens leak.