This is an early model large case RC4558P (made in Japan) model!
The subtle compression and boost add a touch of brilliance and presence to the original sound. There are early models that are small and lightweight, and later models that are large and heavy, and there are several types of op-amp ICs. This unit is equipped with the RC4558P. While the RC4558P is famous for being a Malaysian chip, this unit uses the extremely rare Japanese-made RC4558P. Compared to models equipped with the JRC4558D or TL4558P, models equipped with the RC4558P have a wider range, sharper definition, and clearer lows, while also providing extended highs. The compression is strong, sometimes resulting in a slight roughness when playing chords. It has a dynamic and heavy sound. This unit is equipped with an MP-DO1201A board, has a hyphen in the model name, a manufacturer's R mark, and a DC jack without a nut. This is the original overdrive that remains immensely popular even in recent years, and is known for being extremely difficult to obtain. You can experience the most authentic sound ever!
Board: MP-DO1201A
OP-IC:RC4558P(#J044/ATJ/JAPAN)
* There are repair marks on the DC jack.
Era: 1980
Accessories: None
in charge : Sano (Sano)
※The warranty period begins from the date of purchase1It will be months.
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