Hertz HCP 4 4-channel car amplifier — 50 watts RMS x 4 at Crutchfield
HERTZ C26 1" CENTO 120W 4 OHM TETOLON DOME TWEETERS SPEAKERS PAIR CAR AUDIO NEW | eBay
Hertz SX165NEO 4 Speaker Tour Pack PKG + Plug & Play Amplifier For 2014-2023 Harley Davidson® Street Glide bikes that already have SoundStream Radio – Volunteer Audio
Amazon.com: Hertz Compact Power HCP-4 AB-Class 4 Channel Amplifier 95 WRMS x 4 at 2-Ohm : Electronics
Hertz Stage 4 SX165NEO SX690NEO Motorcycle Speakers & SoundStream Reserve HDHU14+ Radio With Hertz 600w HMP4D-SS Plug & Play Amplifier For 2014-2022 Harley Davidson® Electra Glide Police – Volunteer Audio
Hertz Mille ML Power 4 4-channel car amplifier * 120 watts RMS x 4 - Breakers Stereo and Performance
Amazon.com: HDP4 Hertz 4-Channel 1000W Max D-Class Amplifier : Electronics