UREI 565 Filter Set Universal Audio - Museum Quality "Little Dipper" - Music Toyshop

Urei 565 Filter Set "The Little Dipper"
RARE
This one is a beauty. Near mint. Museum Quality

Due to age may have electronically some issues.

We were told it needs new caps by our tech but may need to be looked at further as we just did a prelimary inspection.

Cosmetically it is a wow! It looks like someone just bought it in the 70's.

We bought it from a church that never used it, and babied it. It's like we found it in a time machine.

Here is some more info about this rare gem  from the uaaudio.com website..

"The Little Dipper filter set was introduced at the 1970 AES show in New York, and filled a desperate little niche created in the audio and film production room: the need for the removal of very specific sonic artifacts and anomalies. The Little Dipper has some of the tightest band filters ever made, and is most famous for this incredibly tight 5% Q on its dual-band filters; the Little Dipper can do these tight cuts in a relatively transparent manner. The Little Dipper can also do extremely tight boosts. Six Q settings are available for each band--three for notches, three for peaks. There is also a Range control for the depth of the cut or boost, with coarse and fine controls for frequency selection. In addition to the two band filters, the Little Dipper features 18dB-per-octave high- and lowpass filters, as well as a global Bypass switch.

One of the coolest nontraditional uses of the Little Dipper is for radical phase sweeps, as the tight Qs and the 20Hz to 20kHz range of the combined filters allow extreme tonality shifts. Both band filters can be used simultaneously for even trippier phase acrobatics."

The 565 Little Dipper filter set

From the original cut sheet:
"While the Little Dipper's versatility makes it an ideal tool for many signal processing tasks, its primary function is to remove undesirable 'coherent' or 'semi-coherent' noise components from audible range recorded tapes, film or records. For example, AC-hum oscillations, heterodyne 'whistles,' etc. can be rendered completely inaudible with no apparent effect on the sound quality of music or voice, because of the fluorescent fixture 'buzz' can be greatly reduced. Sounds of an incoherent nature, such as jet aircraft, amplifier noise, and general background noise, can be effectively reduced using the Low Cutoff and High Cutoff filters with or without the band reject filters. A silent-operating 'bypass' switch is provided on the front panel to add or remove all filter action instantly at will."

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