From the first Sonata version, Antec has made a number of small improvements - each one adds up to give a quieter case, with improved potential for cooling. In the new Sonata 2, the potential for sound leakage from the case side panels has been reduced (by removing holes originally forming the Antec logo in the case side panels). A new black air duct 'guide' has been added for removing warm air from around the CPU and GPU areas over the motherboard. The air ducting can hold optional 92mm and 80mm fans. This has improved the potential for cooling this area inside the case, and air extracted is expelled without a fan located on the outside of the case (nearly always a noisy design flaw in many cases!). The front door over the optical drives now opens a full 270°, and Antec have upgraded the quiet power supply to a SmartPower2.0 450W PSU.
Antec Sonata II from the front. The image doesn't show an optional 'Antec' logo case badge that is provided with the Sonata case. The front of the case is a matt finish. Note: the AcoustiPack sound-proofing kit cannot be seen from the outside of the case once installed.
Antec Sonata II from the front (offset left). The image doesn't show the LED blue lights that are located either side of the 'mirror finish' front USB/Firewire/Audio port when the unit is powered on. [You can always unplug these if you don't like blue lights!]
Sonata II Technical Specs (Highlights)