SAE integrated unit. It was their solid state all in on. Looked cool and did sound good but. The first one I received all the inputs were wrong volume said balance cd said tuner snd do on. They actually made me pay the shipping to send it back. After six months the left channel went out. Dropped of at local repair and he told me he could fix. He did fix but also regretted taking on the job. Hevhad to Re-solder the entire board. Said it was all cold Soldered and very poir. Worked for aboutvten years and one day I hit power onlybto hear a click and never powered up. Unpluged everything and placed in garbage!