Amplifier Zapco ST-104D SQ III - used goods

• Amplifier 100% functional.
• Original packaging.
• Missing accessories.
• Minor scratches from installation.

Zapco ST-104D SQ III Amplifier

The Studio-X amplifier series from Zapco was designed specifically for today’s car audio market. The compact Studio-X chassis allows easy installation in any vehicle and, thanks to its modern squared design, your sound system will look as great as it sounds. And speaking of sound... These are Zapco amplifiers, where sound quality always comes first. Durability and reliability are also among the main advantages. It’s not uncommon to see Zapco amplifiers moved from car to car and from generation to generation. Zapco amplifiers made in the 1990s are still bought and sold online by sound-quality enthusiasts around the world. The Studio-X amplifiers are built to last for decades.

Zapco Studio-X Compact Class D Amplifiers

In 2022 Zapco introduced updated Class AB and D amplifiers in their third generation. The amplifier chassis is completely new, with brushed aluminum replacing the previous black finish, and several internal component changes were made to further elevate sound quality. All amplifiers use bipolar output devices for the smoothest possible sound. Shared features of the ST-X line include variable electronic crossovers (HP/LP/Full Range), variable bass boost, variable gain by channel pair, speaker-level input, heavy-duty positive-locking terminals and preamp outputs for chaining to another amplifier in your system without adding extra RCA cables. And the most important trait shared by all ST-X amplifiers is the legendary Zapco sound quality, developed from more than 40 years of experience. The new Studio-X Compact series follows this tradition: thanks to Class D topology it offers significantly smaller dimensions, high efficiency and a high-quality sound inspired by its analog siblings. Sound quality has always defined the Zapco brand, and its engineers worked hard to ensure their digital amplifiers live up to the legendary Zapco sound.  

Main features of the Zapco ST-104D SQ III

• 4-channel Class D amplifier.
• Power 4 x 100 / 2 x 300 W RMS (4 Ω).
• Brushed aluminum chassis with compact dimensions.
• Stable to 2 Ω, bridged to 4 Ω.
• RCA and high-level inputs.
• Automatic switching via Auto Turn On function.
• Continuous input sensitivity control from 350 mV to over 9 volts.
• Bass boost adjustable from 0 to 12 dB.
• Socket-style input terminals.

About Zapco amplifiers

Zapco is the oldest high-end car audio brand in the world, specializing in top-tier amplifiers and in-car DSP processors. The company was founded in the USA in 1974 and has since earned numerous awards from prestigious organizations that evaluate product quality and innovation, as well as at global competitions focused on sound quality. Zapco amplifiers deliver uncompromising audiophile quality, define the standard of excellence and set the criteria by which other products in the industry are judged. For over 45 years Zapco has continuously sought innovative ways to bring better sound into the automotive environment, and this relentless pursuit of absolute sound quality has produced new technologies and high-end products. Why? Because nothing else can touch the soul and bring tears to the eyes like music. Music makes you dance for joy... of all the arts, music has the strongest and most immediate effect on your body and mind. Reproducing music in all its beauty and nuance deserves nothing less than the utmost effort from everyone at Zapco. Because music matters!

Product comments

Evaluation

• Car amplifiers 4-channel car amplifiers
• Promotional items and sales Car amplifiers on sale
• ZAPCO high-end amplifiers