【GZPA 4SQ｜Add Thickness and Power to In-Car Sound with a 4-Channel Power Amplifier】

If you feel that your factory audio or existing system lacks in both the amount of detail and the sense of power, GZPA 4SQ is a 4-channel power amplifier suited to driving both the front and rear speakers properly, and for using it flexibly according to your system configuration.

Designed with an emphasis on audio-quality-critical components, such as a Burr-Brown op-amp from TI and Mundorf’s MCap® capacitors. With a frequency response from 10Hz to 50kHz, extending beyond the audible range, this model is aimed at carefully extracting the information contained in the sound source—from the subtle nuances of vocals to the lingering decay of instruments.

In addition to using the 4-channel configuration to drive the front and rear, depending on how you connect it, you can also configure it to focus on front 2ch use or build a system that combines bridge connections. Since it supports 1Ω stereo and 2Ω bridge, it’s also characterized by being easier to bring out the overall system’s sense of power, matched to the speakers and subwoofers you pair with it.

Better sound doesn’t come just from adding an amplifier—final results will vary with the power supply, wiring, compatibility with your speakers, gain adjustment, and more. At LOGON, we work with you to decide how best to incorporate the GZPA 4SQ while reviewing your current system and how you use your car. If I were choosing, I would select it by looking at the overall balance—not just the amplifier alone, but also including your speakers and your sound preferences.

Main Specifications

【Basic Information】
Product name: GZPA 4SQ
Type: 4-channel power amplifier
Channel configuration: 4ch / 3ch / 2ch

【Frequency Response】
Frequency response: 10Hz–50kHz

【Supported Impedance】
Stereo connection: 1Ω compatible
Bridge connection: 2Ω compatible

【Key Parts】
Op-amp: Burr-Brown by TI
Capacitors: Mundorf MCap®