PRIMA HARMONY TRAINER harmonic tuner mini-organ

via this auction

"PRIMA HARMONY TRAINER is extremely rare and most strange japanese electronic musical tuner mini-organ this unique "harmany tuner" was specially made for pure temperament tune you can easy to set pure temperament tune and confirm by your eyes and ear it's very useful for chorus,ensemble,brass band also for people who seriously studying pure temperament tune made by PRIMA in 1984 Japan

HARMONY TRAINER was expensive and made very limited quantities those days and never sold at ordinary musical instruments market so i'ts very hard to find even in Japan nowadays... this is your first and last chance to get this vintage bizarre tuner mini-organ!

first of all, it looks super cool and futuristic designed, built in silver plastic case with lot of knobs and sliders with 2 octave mini-keyboard and big tuner/beat meter it has black portable handle inside bottom panel

it has selectable 2 MAIN MODE,TUNER and SOUND in SOUND MODE,you can play mini-keyboard and check the harmonic tune that you made TUNER MODE turn this device as a tuner with outside sound(I don't know how to use this TUNER MODE because of no manual)

this unique device allows you to make different tune on each pitch of keys using each black & white tuning knob and set volume balance of each keys by black & white sliders and you can play it with mini-keyboard this mini-keyboard has 4 sounds(organ,sine wave etc),octave shift,pitch shift and TEMP/JUST INTO.selector(I don't know the function of this selector)

left side has metronome section it has big tempo knob with light and BEAT selector and volume

it has internal speaker and internal mic

side panel has OUTPUT,INPUT,DC 9V IN(it also works with batteries),and MIC(SOUND)ON/OFF switch

I recommends HARMONY TRAINER for the artist who tired of usual electronic instruments and seeking for fresh and bizzare one or collectors for these rare strange japanese electronic instruments,mini-organs and also recommends those who seriously studying harmony or pure temperament tune"

You can find a video of one here.