Zapco ST-1B Mono Class AB Amplifier

A factory head unit has limited power, so speakers run out of clean volume early. The ST-1B is an amplifier that gives your speakers or subwoofer the power they need.

Key features

• Mono Class AB Amplifier
• MOSFET power supply
• RCA input and output
• Variable Inputs Gain Control
• Variable LP Electronic Crossover
• Variable Bass Boost
• Phase 0 to 180°
• Subsonic filter

Specifications

• Power @ 4 ohm: 200 watts
• Power @ 2 ohm: 300 watts
• Signal to Noise Ratio > 97dB
• Input Sensitivity .25v to 5v
• Dimensions in mm: 182(W) x 52(H) x 280(L) Overall: 182(W) x 52(H) x 310(L)
• Carton size (supplier figure): 50cm x 18cm x 7cm
• Part number: ST-1B
• Shipping weight: 3 kg (supplier figure)

Installation

We recommend fitting by a qualified car audio installer, with correctly rated power wiring and fusing. Our workshops at Albion Park Rail (02) 4257 2636 and South Nowra (02) 4423 5254 can quote on fitting.

Warranty

It comes with the manufacturer's warranty through the Australian distributor, plus your rights under the Australian Consumer Law.

Questions and answers

How much power does the ST-1B put out?

The supplier lists Power @ 4 ohm: 200 watts.

How efficient is the ST-1B?

The supplier lists Input Sensitivity .25v to 5v. Higher sensitivity means more volume from the same power.

Do I need a wiring kit for the ST-1B?

Yes. An amplifier needs power, earth, remote and signal wiring sized to its current draw, with a fuse near the battery. Ask us and we will match a kit.

Can you fit the ST-1B for me?

Yes. Our Albion Park Rail and South Nowra workshops can quote on supply and fitting. Call (02) 4257 2636 or (02) 4423 5254.

What warranty comes with the ST-1B?

It comes with the manufacturer's warranty through the Australian distributor, plus your rights under the Australian Consumer Law.