Jensen AVS-1500 in good working order and sounds excellent, tons of features, preamp outputs, discrete headphone controls, phono input for a turntable. Jensen Sound Laboratories AM/FM stereo receiver rated at 50 watts per channel at no more than 0.05 percent distortion. The unit also a 133-channel video tuner, VHF and UHF broadcast bands. A control marked DNR (for Dynamic Noise Reduction) activates a circuit that reduces high frequencies in the softer passages to make the hiss on most cassettes less obtrusive while allowing the full tonal range to pass in loud passages, where the volume of the music would mask the hiss. The net result is effective noise reduction without a subjective sense of lost treble. Quite beyond the ordinary are two controls respectively labeled as ''acoustic enhance'' and ''synthetic stereo.'' The latter provides a kind of pseudo-stereo.