【GROUND ZERO GZPA Reference 4PURE-SQ｜4-channel power amplifier focused on sound quality】

For those who want to draw out even more detail and depth in their music, here is the GROUND ZERO high-end 4-channel power amplifier, “GZPA Reference 4PURE-SQ.”

This model deliberately does not include functions such as crossovers or phase-shift controls. Instead, it keeps the signal paths related to sound quality simple and direct. Potentiometers and switches are also reduced as much as possible, making it a power amplifier designed purely to reproduce music.

It’s not aimed at adding convenient features, but rather at people who want to listen carefully to the subtle nuances of sound, the presence of vocals, and even the positional relationships of instruments. The more you take time to enjoy your usual music, the more you’ll likely feel how important it is to choose an amplifier that affects the overall finishing of the entire system.

In addition to using it as a 4-channel amplifier for the front speakers, depending on the system setup, you may also consider driving multiple speakers. However, which approach fits best will vary based on your current head unit and speakers, whether you have a DSP, and how you plan to use it in the vehicle.

An amplifier isn’t something you’re done with just by installing it. The sound impression is determined by everything from power and signal routing, installation method, and combination with the overall system, to the final adjustments. I think it’s a good idea to think together while checking your vehicle and your preferences—including whether your setup can make the most of the strengths of the GZPA Reference 4PURE-SQ.

※This is a made-to-order product.

Key Specifications

【Basic Information】
Product name: GZPA Reference 4PURE-SQ
Brand: GROUND ZERO
Type: 4-channel power amplifier

【Channel Configuration】
4ch
4ch / 3ch / 2ch Dual Stereo

【Built-in Functions】
Crossover: Not included
Phase-shift control: Not included

【Other】
Made-to-order product