Zapco · Amplifier
ST-4X SQ III
4-Channel SQ Class AB Amplifier delivering 70W RMS of audiophile Zapco power.
SQDAILY
- Max Output
- 125 W
- Impedance
- 4Ω / 2Ω stable
$399.99
- Authorized dealer
- Free US shipping
- Manufacturer warranty
Ships in 2–3 business days · 3–5 business days in transit · Estimated delivery 5–8 business days
SKU: ZAP-AMP-ST4XSQIII-4CHAB
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 AB 4-Channel SQ, the ST-4X SQ III is rated at 4x70W @4Ω, 4x125W @2Ω. It is 4Ω / 2Ω stable.
Ideal for a plug-and-play SQ build, it pairs naturally with ESB 5000 and 8000 Series component speakers.
Specifications
Measured, not marketed
Power
| Configuration | Class AB 4-Channel SQ |
|---|---|
| RMS | 4x70W @4Ω, 4x125W @2Ω |
Electrical
| Class | Class AB |
|---|---|
| Impedance | 4Ω / 2Ω stable |
| Frequency Response | — |
Physical
| Weight | 13.2kg |
|---|---|
| EAN | 8033373005350 |
Documents
Datasheets, manuals & templates
Designed For
Which build is this for?
Complete the System
