The Hartke HD25 is a bass guitar amplifier that provides a powerful and versatile sound in a compact and portable package. It features a 25-watt Class D amplifier and a 8-inch HyDrive paper and aluminum cone driver that delivers a punchy and defined tone with a wide frequency range. The HD25 has a durable and stylish cabinet with a black vinyl covering, perforated metal grille, and a silver Hartke logo. The amplifier has a control panel with a 3-band EQ, a volume knob, and a headphone jack for silent practice. It also has an auxiliary input and a dedicated 1/8″ stereo input for connecting external audio devices such as a phone, tablet, or MP3 player. The HD25 has a built-in limiter that prevents distortion and protects the amplifier from overloading. It is lightweight and portable, making it easy to transport to gigs or rehearsals. The Hartke HD25 is an excellent choice for bass players who want a powerful and versatile amplifier with a compact and rugged design.