However, premium speakers offer a certain amount more: a larger frequency range, which makes itself felt in the better sound, a better IP protection class and a longer battery life. Zamkol Direct has also thought of music lovers who still have older devices like a CD player in operation. This is simply plugged into the headphone jack on the source device and then into the AUX input on the underside of Zamkol ZK606. The plus and minus keys are used simultaneously to adjust the volume and to jump back and forth between audio titles.
To select the audio source between Bluetooth device or AUX input, briefly press the Power button. The Play button is used to start music playback, but also takes over functions such as answering calls.
For comparison: Our editorial recommendation among the portable Bluetooth speakers, JBL Flip 4, offers 2x 8 Watt output power. Zamkol ZK606 is the perfect choice for those who set volume as their primary performance feature.
However, our test overview shows that the Bluetooth speaker can’t keep up with the noble brands in terms of sound quality. 360-degree speakers in the same device class as Ultimate Ears BOOM 3 or JBL Flip 4 start at 90 or 70 Hz and end at 20 kHz.
Zamkol ZK606 vs ZK202: Review & Full Comparison
Some specialty features like using the speaker to charge your phone or casting an LED light show will also drain the battery faster.
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