Comparison test of RCA Cable 2003 and 2006
The 2003 is a standard RCA cable that uses the commonly used OFC.
The 2006 is a slightly premium RCA cable made using high-purity copper C1011 with a purity of over 99.99%, in accordance with JIS standards.
Here are some quick thoughts after comparing the two.
HD-2003RR : A calm impression with a focus on the mid-low range
HD-2006RR : Compared to the 2003, the high frequencies are well-balanced and have a brighter, more reverberant sound.
