2 - Yamaha Model MJ100 Stereo Mixer (vintage)  These two units had belonged to my husband and was used for his DJ unit.

Each mixer has:

2 stereo channels (Source 1 and 2).

4 separate input jack pairs for each source, to include a phono input.

One mic input (1/4” jack).

Five Band Equalizer.

One Instrument input with Send/Return/Regeneration level controls.

3 position time delay switch.

Line Out and Master Out with separate level control sliders.

Headphone jack with switches for all inputs.

Includes:

Only one XLR to ¼” plug adapter with built-in switchable impedance matching transformer.

VU level meters work properly.

Sliders and some switches could use a little electronic component cleaner.

S/N: QM01066 (Mixer #1 in photos)

Source 2: Left side seems a slightly weaker than the right. Not a huge deal.

Mic jack does not work properly. Intermittent sound that jumps high and low in volume.

S/N: KL01081 (Mixer #2 in photos)

Master Slider: Could use some component cleaner more than on the other mixer.

Mic jack works properly.