THE standard audio system on IS300 includes an electronically tuned AM/FM radio with six AM and 12 FM preset stations, a full logic-controlled cassette deck and a built-in compact disc player with six-stack multi-changer. Eight speakers with "Super Live Sound" technology including front titanium dome tweeters, rear "super woofers" and rear mid-high squawkers are used. Tweeter diameter is up 5mm to 25mm and a more powerful amplifier is now fitted as part of the mid-life upgrade to the IS series. A pole antenna is mounted on the roof.