Audison Voce AV Uno Mono 1 Kanal Subwoofer Class A & B Verstärker 1700W RMS

Input sensitivity: 0.3 ÷ 5 V RMS. Speaker-In sensitivity: 1.4 ÷ 24 V RMS. NOMINAL POWER (RMS) @ 12 VDC, THD 0.3%, 4Ω: 700 W x 1. OUTPUT POWER (RMS) @ 14.4 VDC,THD 1% This has been professionally fitted in my Audi RS4 show car running 2 x Hertz 12” Mille Pro Subs, only used for 5 months.

eBay