Russound SS-4.2 4 Pair Single Source Impedance Matching Speaker Selector in Black Subwoofers The FIRST ® Ultimate performs

The FIRST ® Ultimate performs equipment independently

WBT connectors with Annealed aluminum plate on Dusk

HF: ATC 25mm Neodymium / Mid: ATC 75mm soft dome / LF: ATC 164mm SC

This became Signature Reference

Russound SS-4.2 4 Pair Single Source Impedance Matching Speaker Selector in Black Subwoofers The FIRST ® Ultimate performsThe SS 4. 2 allows you to switch up to four speaker pairs connected to a stereo amplifier. Offering high quality audio performance, it also provides overload protection and long term reliability. The SS 4. 2 offers two operating configurations: Impedance Matching and Bypass. Impedance matching mode provides automatic overload protection for use even with high power amplifiers. This mode allows multiple pairs of speakers to be safely connected to an