Douk Audio A5 PRO Integrated Amplifier

The Douk AUDIO A5 PRO integrated amplifier, big brother of the A5, is a small amplifier based on audiophile components with a singular aesthetic. It's based on a TPA3255 amplifier chip and OPA NE5532, enabling it to deliver output power levels of up to 2x 120W @ 4 ohm with the supplied power supply. Its PFFB circuit reduces distortion and greatly improves frequency response for accurate, authentic sound reproduction.
Compared with the A5, it offers a number of additional features, such as bass and treble tone control, and Bluetooth 5.1 reception for reliable, stable wireless transmission. The OPAs are DIP 8 mounted for quick and easy replacement. In terms of design, there's an attractive transparent glass that allows the operation to be carried out without dismantling the unit. This glass also allows use of the RGB LED display, which sublimates the amplifier circuit and can be adjusted via DIP switch.
On the rear panel, you'll find the essentials in terms of connectors, with an RCA input, a speaker terminal output and a 3.5mm AUX jack output, enabling you to set up a 2.1-channel system with an active subwoofer, for example. The front panel also features a 3.5mm headphone output, making the A5 PRO a perfect desktop amplifier.

Douk Audio A5 PRO: a powerful amplifier with PFFB circuitry

The Douk Audio A5 PRO features a TPA3255 chip coupled with NE5532 OPAs. A PFFB (Post-Filter Feedback) circuit greatly enhances the amplifier's performance. With the 48V 5A power supply supplied, the A5 PRO is able to deliver up to 2x120W of power under a 4 ohm load. This power reserve makes it possible to provide sound for a relatively large space.