The all-new hd25 bass combo packs hartke's patented hydrive speaker technology into a sleek combo design ideal for small venues, rehearsal spaces and bedroom practice sessions, and capable of greatly enriching your low-end tone. the hd25 also maintains hartke's commitment to producing high-quality bass amplification with exceptional durability. with the exceptional tone of a hydrive speaker housed in a durable, highly portable enclosure, hartke's hd25 bass combo is able to perform at levels far beyond ordinary bass combos.