Marantz AV251

Commentary

An AV controller equipped with two input / output terminals for VTRs, two input terminals for video equipment, one input terminal for audio equipment, and one video / audio output terminal for monitor.

Equipped with a copy switch, VTR-1 and VTR-2 can dub each other with one touch.
The VTR-1 and VTR-2 are equipped with a stereo / mono selector switch.

Audio output and video output can be switched independently.

It is equipped with an enhancer function that is ideal for dubbing or making your own video.
With the Sharpness control, you can sharpen the edges of the image (SHARP), and soften the image quality and noise.
The fader function allows you to fade in and out video and audio simultaneously.

Equipped with a SPATIAL ST (Spatial Stereo) function, it controls the middle and high frequency phase, which is most sensitive to sensitive to the human ear, and can be enjoyed by converting the monaural signal into a pseudo-stereo.

Dynamic Noise Reduction (DNR) is a noise reduction system based on a variable band low-pass filter that varies from 1 kHz to 30 kHz depending on the signal spectrum. It achieves a noise reduction effect of 10 dB in silence.

Equipped with a microphone mixing function.

Model Rating

Type	AV controller
<Video Part>
Input Sensitivity / Impedance	1Vp-p/75 Ω (Unbalanced)
Output Level / Impedance	1Vp-p/75 Ω (Unbalanced)
Signal-to-noise ratio	70dB
Frequency characteristic	6 Hz to 8 MHz ± 3 db
<Audio section>
Input Sensitivity / Impedance	150mV/25k Ω
Output Level / Impedance	150mV/250 Ω
Signal-to-noise ratio	85dB
Frequency characteristic	50dB
Channel separation	50dB
DNR effect	10dB
<General>
External dimensions	Width 420x Height 37x Depth 192 mm
Weight	1.8kg