Shin-Ei “Four-in-the-floor” drum synthesizer foot pedal

video upload by Cfpp0

"Shin-Ei drum machine. Runs on two 9v batteries. Works perfectly, just some occasional scratch on the volume sliders. Distort it and it becomes another thing altogether. Compress it and you can get some 808-ish. Sticker on bottom says from 1974."

Playlist:
7/14/23 Shin-Ei “Four-in-the-floor” drum synthesizer foot pedal + Deltalab Effectron II + CXM 1978
7/14/23 DEMO: Shin-Ei “Four-in-the-Floor” drum synthesizer pedal [bone dry]
7/14/23 Pam’s + Synare 3 and a Shin-Ei Four-in-the-Floor into Effectron II (x2) + PCM 70 + CXM 1978
7/14/23 Shin-Ei “Four-in-the-Floor” drum synthesizer pedal and Metasonix TM-5
7/14/23 Chuck Johnson’s “Caldera Wires” poorly programmed into Firstman SQ-01 + Metasonix TM-5

Some pics with the original box via this auction

"This is a vintage Shin-Ei 4 IN THE FLOOR PERCUSSION COMBO foot operated drum machine. Yes, the same Shin-Ei that brought you the Univibe pedal!

Powered by 9v batteries, and operated via four pedals to trigger four drum sounds, with four sliders to control the volume of each drum sound.

The snare rooooolllllllllllllllllls. And you can set the rate of the roll, which they call REPEAT, with a flathead screw driver! Mono 1/4” out.

Great skeuomorphic wood grain laminate with chrome and aluminum. Rainbow on the back, and a cool wedge shape all around. The drum sounds are beefy, robust, healthy, and sound very analog.

I played the pedals by hand, though they are meant to be played by foot, probably while playing guitar, keys, woodwinds, brass, drums, turntables, or possibly the harp if you wanna get all Zeena Parkins and Ikue Mori with it.

Rare as a leprechaun, ride this rainbow into the night."

You can find additional info and pics of another one here.