Acoustic Control SM-500 Mixing Console

Acoustic Control SM-500 passive stereo analog mixer.
Input Channels: Features 5 vertical faders to control the volume of different sources:
MIC: Microphone input.
PHONO 1 and PHONO 2: For connecting turntables.
TAPE / TUNER 1 and TAPE / TUNER 2: For line sources such as CD players, cassette decks, or radio tuners.
In the upper left, it has a "Monitor" section with a headphone output (PHONES) and includes two analog VU meters.