The Marantz PMD 661MKII Warm MOD upgrade rebuilds the XLR inputs using high speed, low noise and very low distortion FET op amps that dramatically improve fine detail and clarity. the Warm MODs preamp chips use FETs so they sound very much like a tube preamp with the warm sound that offers a fat rounded bass tone, a sweet silky high end and the expansive soundstage found in high end tube circuits. Components are selected by ear to optimize detail and imaging for recording all types of music when a warm tone is needed.
Please note this upgrade works in the original and MKII versions.
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Price includes return shipping in the 48 states.