Introducing the latest version of the S4 amplifier, the S4b. Our most versatile amp just underwent an extensive circuit upgrade to make our ideal of True To The Source reproduction truly accessible. This is the best sounding S Series amp ever. We have scrutinized the topology and parts to deliver the cleanest signal path we could while our focus on efficiency has allowed us to deliver the S4b at an affordable price.


Channels Can be used as 2, 3 or 4
Cont Wattage @ 4ohm 120W x 2ch + 240W x 2ch
Cont Wattage @ 2ohm 180W x 2ch + 360W x 2ch
Power Wire Guage In 4 AWG
Speaker Wire Gauge Out 10 AWG
Dimensions: in 17.88" x 9.13" x 2.5"
Dimensions: mm 45.42 x 23.19 x 6.35 cm
Shipping Weight - lbs 16 lbs / 7.26 kg