B&H Photo Video offers the Astell & Kern AK120 II Portable High Definition Sound System for $729.95 with free shipping. That's $19 under our July mention and the lowest price we could find by $969. It features a 3.3" 480x800 AMOLED touchscreen, 128GB internal storage, expandable storage up to 256GB, MSQ wireless streaming, 10-band graphic EQ, and support for a range of file formats.