Chase Tone Secret Preamp

In Excellent condition. No box or manual.

In the 1960s and 1970s, Echoplex tape echo delay units evolved from tube based designs into solid-state designs. Notably, the EP3 model was a solid-state model and had a few variations and revisions to the circuit. A select number of EP-3 models are highly sought after by musicians for their unique musical tone.

Famous musicians of the era and later realized having the EP-3 in their signal altered their tone, even when the echo was bypassed. An internal secret preamp was at work here, boosting and fattening the signal, along with a slight phase shift that alters mid and high frequency harmonic content providing a transparent warm boost – a truly secret preamp boost in the arsenal of the great guitarists of yesteryear.

Volume Control:
FULL COUNTER-CLOCKWISE = NO SIGNAL
10 to 11 0’clock = UNITY GAIN (Depends upon EQ Setting)
1 to 2 o’clock = 3dBs+ MAXIMUM OUTPUT BOOST
3 to 5 o’clock = 1dB or 2dBs with FLAT EQ just like a worn, vintage Echoplex

3-Way EQ Switch:
Early 1970s = BRIGHT
Late 1970s = DARK
Hybrid Early & Late = MID

All photos are of the actual item for sale, © Rock City Sound.

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