zapco DC-352, Owner'S Manual

 Mission Statement

ZAPCO IS DEDICATED TO THE PURSUIT OF AUDIO FIDELITY.

Our passion, our “Driving Force” is to design and manufacture car audio products of 

unsurpassed quality, to provide unparalleled support and service for these products and 

to conduct business in a manner that will enhance the quality of life for all involved. 

There is absolutely no substitute for experience; that is a simple fact of life. Another simple 

fact is that for over 30 years, ZAPCO has been the leader in defining quality standards for 

the car audio industry. These years of experience have led to a thorough understanding 

of the challenges that are unique to the world of car audio. ZAPCO’s relentless quest for

sonic purity consistently yields imaginative designs that utilize the most innovative

 technologies. There sulting products set the criteria by which all others in the industry 

are judged. Feel the passion, hear the quality, know the performance and reliability by 

making ZAPCO the “Driving Force” in your car audio system.

Sonic Purity

Our dedication to sonic purity requires that the highest quality internal components are 

used.

Resistors

             All resistors (other than power resistors) are 1% precision low noise metal film. 

This is a key reason why ZAPCO products have the industries’ best low noise specifications, 

and why you won’t see as much fluctuation in our test certificates as you will with other 

brands. Precision resistors also reduce distortion and improve channel matching.

Capacitors

             Capacitors are similar to batteries. Like a battery, they store energy and have 

electrolyte (internal fluid). Also like a battery, a capacitor can have a very limited life. 

“Computer grade” capacitors for example, are reliable only in cool environments with 

very little current applied to them. Only the best high current and high temperature 

capacitors should be used in an auto-sound application. Although these capacitors 

typically cost five times as much as those commonly used in other brands, ZAPCO insists 

that no audio degradation will occur over time.

Transistors

            Two types of transistors are used in ZAPCO products, bipolar and MOSFET. 

MOSFET transistors are rugged, high current output devices that are best suited as 

switches. They are the choice for switching power supplies. They are however, very 

non-linear and are not suitable for use as audio outputs. They cannot be matched and 

their inherent distortion requires too much feedback to achieve reasonable distortion 

levels. Bipolar output transistors are used exclusively in the audio stage of all Reference 

Series amplifiers. The audio performance of a bipolar transistor heavily outweighs any 

minor advantages a MOSFET might offer regarding durability. We solve the durability 

concerns by simply using more output devices than the amplifier requires. This gives us 

a bulletproof amp with the sound quality we demand of a ZAPCO product.

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