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Zapco ST-204D SQ III | HF Audio
Zapco · Amplifier

ST-204D SQ III

4-Channel SQ Class D Amplifier delivering 200W RMS of audiophile Zapco power.

Committed to Excellence. The ST-X III series is Zapco's plug-and-play platform of SQ amplifiers and integrated DSP-amplifier combos. It sits in the versatile center of the Zapco lineup, engineering competition-grade sound into installs that go in fast and tune easily. Configured as Class D 4-Channel SQ, the ST-204D SQ III is rated at 4x200W @4Ω. It is 4Ω stable. Ideal for a plug-and-play SQ build, it pairs naturally with ESB 3000 and 4000 Series component speakers.

SQDAILY
Max Output
290 W
Impedance
4Ω stable
$699.99

Our actual price is below the manufacturer's advertised minimum — final price is shown in cart.

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  • Free US shipping
  • Manufacturer warranty

SKU: ZAP-AMP-ST204DSQIII-4CHD

Overview

Built for the install, not the spec sheet

Committed to Excellence. The ST-X III series is Zapco's plug-and-play platform of SQ amplifiers and integrated DSP-amplifier combos. It sits in the versatile center of the Zapco lineup, engineering competition-grade sound into installs that go in fast and tune easily.

Configured as Class D 4-Channel SQ, the ST-204D SQ III is rated at 4x200W @4Ω. It is 4Ω stable.

Ideal for a plug-and-play SQ build, it pairs naturally with ESB 3000 and 4000 Series component speakers.

Specifications

Measured, not marketed

Power

ConfigurationClass D 4-Channel SQ
RMS4x200W @4Ω

Electrical

ClassClass D
Impedance4Ω stable
Frequency Response

Physical

Weight14.8kg
EAN8033373005336
Documents

Datasheets, manuals & templates

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Designed For

Which build is this for?

SQ

Sound Quality

Detail, staging and tonal accuracy.

See matching SQ builds
DAILY

Daily Driver

Balanced everyday upgrade.

See matching DAILY builds
Complete the System

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