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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
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 2x 120W @ 4 ohm output power 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.
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 |
A 30-200Hz high-pass filter, adjustable by means of a potentiometer on the front panel of the Douk Audio A5, minimizes low-frequency interference for clearer sound reproduction.
The NE5532 OPAs are DIP8-mounted, making them easy to replace. This is made even easier by the tempered glass window on the top of the amplifier. Here's a non-exhaustive list of OPAs that can replace NE5532s: 2134/2604/5532/2068/muse02 etc.
In terms of aesthetics, the A5 benefits from a tempered glass top and DIPSWITCH-adjustable LEDs.
1 | Potentiometer for setting high-pass filter 30-200Hz |
2 | Volume adjustment potentiometer |
3 | Analog RCA stereo input |
4 | AUX jack 3.5mm output |
5 | Speaker terminal |
6 | Power supply 24-48V via jack DC |
Our journey into these pocket/desktop amps started around this $100 price range but without PFFB feature. Douk A5 disrupts this market by providing PFFB at the $100 price mark. There is a bit of high frequency distortion penalty there but otherwise, the rest of tests show excellent engineering, put a big smile on my face! I am happy to recommend the Douk Audio A5 stereo amplifier.
Technical characteristics
Specifications | |
---|---|
Product type | Integrated amplifier |
Amplification chip | TPA3255 |
OPA | OPA5532 |
Input | 1x RCA input |
Output | Speaker terminal 1x Jack 3.5mm AUX output |
Output power | 2x 120W @ 4 ohm (48V 5A) |
THD+N | 0.002% |
SNR | ≥ 114dB |
Frequency response | 20Hz-20kHz (±0.7dB) |
Low-pass filter | 30Hz-200Hz |
Input sensitivity | 2V |
3.5mm jack output level | 3.7V |
General | |
---|---|
Power supplie | DC 24-48V (48V 5A power supplie included) |
Dimensions | 95 x 92 x 50mm |
Weight | 506g |
Color | Noir |
Package | 1x DOUK AUDIO A5 integrated amplifier 1x 48V 5A mains adapter |
Input | RCA |
Output | Jack 3.5mm |
Output | Speaker terminal |
Color | Black |
Channel | 2 (Stereo) |
Channel | 2.1 |
Class | Class D / T |
Amplifier chip | TPA3255 |
Power (W) | 120.0 |
Remote Control | No |