Is this the best Bluetooth speaker under 1,500 CZK? This one has 80W power, water resistance, and great reviews

Anyone looking for a portable Bluetooth speaker at a reasonable price should pay attention. The Sencor RESONEX MIDI is currently selling on Alza for the historically lowest price of 1,399 CZK, but only for AlzaPlus+ program members. The regular price is 1,999 CZK, so this is a saving of exactly 600 crowns. For this amount, you get a water-resistant speaker with surprisingly decent performance that has won the favor of over a hundred satisfied customers.

Water Resistance and Solid Performance

The RESONEX MIDI features IPX7 certification, meaning you can use it worry-free by the pool or on the beach. The speaker can even survive short-term immersion in water, so accidental rain or a spilled drink poses no threat to it. The design relies on premium fabric and robust craftsmanship, which customers repeatedly praise in reviews.

Regarding sound, Sencor opted for four speakers and two passive radiators with a total output of 80 W. The frequency range covers 50 Hz to 20 kHz. For lovers of deep tones, a Bass Boost button is available to enhance the bass component. It should be noted that at maximum volume above 80%, some reviews already mention slight distortion – however, for regular home use or smaller outdoor events, the performance is more than sufficient.

Battery and Connectivity

The integrated 7,200mAh lithium-ion battery provides up to 12 hours of playback at 50% volume. Charging occurs via USB-C with PD support and takes a maximum of 2.5 hours. An interesting feature is the power bank function – the speaker can charge your smartphone with a 5V/2A output.

Connectivity is provided by Bluetooth 5.3, which users appreciate for fast and reliable pairing. An AUX input (3.5mm jack) and a USB port for playing music from a flash drive are also available. Sencor also offers a Broadcasting function, which allows connecting up to 99 RESONEX series speakers to provide sound for larger spaces.

LED Lighting and Controls

The speaker features LED lighting that reacts to the rhythm of the music, creating atmosphere for evening events. The lighting effects can be turned off if they are not desired. Also included is an LED indicator for volume and battery status. Dimensions are 263 × 123 × 112 mm with a weight of 1.6 kg, making it an easily portable device. The package includes a USB-C charging cable and a carrying strap.

What Users Say

On Alza, 120 customers rate the speaker with an average score of 4.7 out of 5. A full 92% of buyers recommend it, and the return rate is only 0.85%. Among the most frequently mentioned pros are:

• Price/performance ratio – repeatedly described as unrivaled in its price category
• Bass quality – deep, unmuddy bass that will surprise even demanding listeners
• Robust build – premium look and durable construction
• Long battery life – some users report more than 12 hours at lower volumes

Among the critical comments, the most frequently mentioned are the loud jingle when turning on and off, which cannot be muted, and also the quick automatic shutdown after inactivity (approximately 5 minutes). Some users would appreciate the option to switch to stereo mode when pairing two units – currently, they only function as a mono pair.

Is it Worth It?

For 1,399 CZK, you get a water-resistant speaker with performance that is hard to beat in this price category. It’s ideal for garden barbecues, trips to the water, or as sound for smaller spaces. However, if you expect studio-quality sound or flawless delivery at maximum volume, you’ll have to dig deeper into your pockets. For undemanding users who want a reliable portable speaker without having to invest thousands in premium brands, the RESONEX MIDI represents a reasonable choice.

What is AlzaPlus+?

The AlzaPlus+ program offers free delivery to over 25,000 pick-up points, including AlzaBoxes, Zásilkovna branches, PPL Parcel Shops, or Czech Post. Annual membership costs 299 CZK (i.e., 25 CZK per month), while the monthly option is 59 CZK. The advantage is the absence of a minimum order value – you get free delivery even when buying a small item for a few crowns. Membership can be canceled at any time.

Are you interested in the Sencor RESONEX MIDI?