Dual coil "humbucker" pickups, sometimes abbreviated to DC pickups, have two signal-producing coils that are reverse-wound around opposed polarity magnets (similar in principle to the two individual J-pickups or the two halves of a modern Precision pickup, only in a single housing). This significantly reduces unwanted noise from electromagnetic interference compared to single coil pickups. Humbuckers also often produce a higher output level than single coil pickups, though many dual-coil pickups are marketed as retrofits for single-coil designs like the J pickup and advertise a similar output and tonal character to the stock single-coils. Dual coil pickups come in two main varieties; ceramic or ceramic and steel. Ceramic-only magnets have a relatively "harsher" sound than their ceramic and steel counterparts, and are thus used more commonly in heavier rock styles (heavy metal music, hardcore punk, etc.).
In some cases, to play the bass through PA amplification, it is plugged into a direct box or DI, which routes the signal to the bass amp while also sending the signal directly into a mixing console, and thence to the main and monitor speakers. When a recording of bass is being made, engineers may use a microphone set up in front of the amplifier's speaker cabinet for the amplified signal, a direct box signal that feeds the recording console, or a mix of both.
After spending 29 hours researching 21 models and testing seven with a panel of professional and amateur pianists, we think the Casio Privia PX-160 is the best budget digital piano for beginners. It suitably replicates the feel of an acoustic piano and has some of the most realistic sounds we’ve heard in this price category, and its dual headphone outputs accommodate both student and teacher.