The Douk Audio A5 integrated amplifier is a small amplifier based on audiophile components with a singular aesthetic. It relies on a TPA3255 amplifier chip and OPA NE5532 to deliver up to 2x120W under 4 ohm with the supplied power supply. Its PFFB circuit reduces distortion and greatly improves frequency response for accurate, authentic sound reproduction. In addition, an adjustable 30-200Hz high-pass filter limits low-frequency interference for fine, clear mids and highs. Furthermore, the OPAs are DIP 8 mounted for quick and easy replacement. In terms of design, an attractive transparent cover makes it possible to perform the operation 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 all the essentials in terms of connectors, with an RCA input, a speaker output and a 3.5mm AUX output, offering the possibility of setting up a 2.1-channel system with an active subwoofer, for example.

Douk Audio A5: a powerful amplifier with PFFB circuit
The Douk Audio A5 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 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.

| DOUK A5 power table |
|---|
| Power supply | Impedance | Output power |
| 32V 5A |
| 4Ω | 78W+78W |
| 6Ω | 71W+71W |
| 8Ω | 65W+65W |
| 36V/6A |
| 4Ω | 107W+107W |
| 6Ω | 100W+100W |
| 8Ω | 94W+94W |
| 48V/5A |
| 4Ω | 120W+120W |
| 6Ω | 110W+110W |
| 8Ω | 102W+102W |
| 48V/10A |
| 4Ω | 250W+250W |
| 6Ω | 210W+210W |
| 8Ω | 185W+185W |