A 12 volt Altmann BYOB Amplifier and DAC. Comes with battery cable, DAC to Amplifier RCA cables and specialist anodised speaker cables.
Cost to buy new 6000€. You really need to hear it.

From the manufacturer's site:
The BYOB amp sports 2 x 10 W into 8 Ohm respectively 2 x 20 W into 4 Ohm and even more into 2 Ohm. This high power-level is achieved through bridged operation. That means, both channels are internally bridged by design.
The Altmann BYOB amp is an audiophile amplifier, not a stadium PA amplifier. The power level is more than enough for home use and small to medium parties.
If you have high-efficiency speakers you can listen very very loud. Remember that the BYOB is battery powered and thus is not afraid of a speaker's impedance dip. The power is delivered instantaneously.
They can be heard in Lagos.