Default sorting Sort by popularity Sort by average rating Sort by newness Sort by price: low to high Sort by price: high to low Pioneer GMA6704 – 1000w 4-Ch Bridgeable Amplifier with Bass BoostAmplifiers. $199.95 Pioneer GMD8601 – 1600w Class-D Mono Amplifier with Wired Bass BoostAmplifiers. $399.95 Pioneer GMD8604 – 1200w Class-FD 4-Ch Bridgeable Amplifier with Bass Boost RemoteAmplifiers. $499.95 Pioneer GMD9601 – 2400w Class-D Mono Amplifier with Bass Boost RemoteAmplifiers. $699.95 Pioneer TSWX120A – Powerful Amplified Subwoofer SystemAmplifiers, Subwoofers.