An old TV gets a second lease on life. Tesla's highly-rated box is now available for a fraction of the price

If the smart features of your older TV stop working, you don’t have to buy a new one right away. The TESLA MediaBox XT850 is now 1,724 CZK with code ALZADNY25 instead of the usual 2,299 CZK, making it one of the lowest prices this box has ever been available for on Alza. Czechs have fallen in love with it because it combines Android TV with apps like Netflix or Oneplay and a DVB-T2 set-top box into one device. It’s affordable, and you don’t have to have two different boxes cluttering up your TV area.

Quick summary:
✅ Makes sense if you want to turn an older TV into a smart device with streaming apps and also have a built-in DVB-T2 tuner.
⚠️ Consider if you mainly want to watch terrestrial broadcasting with fast motion (sports) — some users report image tearing, and expect only 100 Mb/s LAN and Wi-Fi 5.
💡 For 1,724 CZK, it’s an affordable hybrid for revitalizing your TV, but it’s an entry-level performance class, not top-tier.

Why this box is interesting

The main draw of the TESLA box is its dual nature: it combines full-fledged Android TV with streaming apps and a built-in DVB-T2 tuner for classic terrestrial broadcasting via antenna. In practice, you can turn a regular TV into a device with Netflix, Disney+, Max, iVysílání, and YouTube, and also tune in terrestrial channels, all with one remote.

Price-wise, the box makes more sense now than usual. It’s back on sale for 1,724 CZK with code ALZADNY25, putting it below the previous minimum price recorded by Alza. Over 5,000 units have been sold, and it holds a rating of 4.7 out of 5, so it’s not an unknown item but an established and popular model.

Key parameters explained in plain language

The box handles 4K UHD at 60 Hz and supports HDR10, HDR10+, and HLG, with Dolby Audio taking care of sound. Inside, a quad-core Amlogic S905Y4 chip works with 2 GB RAM and 32 GB storage, running Android TV (supplied with version 11); some users mention a later update to a newer system version. It’s hardware tuned for streaming, not top-tier performance.

Smart features are well represented here. There’s a built-in Chromecast for mirroring from your phone, voice control via Google Assistant, and integration with Google Home. For terrestrial broadcasting, you have TimeShift, teletext, and EPG available. Connectivity is handled by Wi-Fi 802.11ac, Bluetooth 5.0, and LAN, which we’ll elaborate on in the practical section, as there are two fair points to know here.

Practical aspects: ports, connectivity, remote control

In the package, you’ll find a Bluetooth remote control, power adapter, and HDMI cable, so you can plug it in right out of the box. The remote communicates via Bluetooth, so it doesn’t require direct line of sight to the box and has quick access buttons for Netflix or YouTube, which people praise in reviews. Connectors include HDMI 2.0b, USB 2.0, AV output, RJ-45, and antenna input.

However, two limitations are good to know in advance. Ethernet is only LAN 10/100 Mb/s, and wirelessly it’s Wi-Fi 5 (ac), not the newer Wi-Fi 6. For streaming, this is sufficient in most cases, but a few users encountered tearing with 4K content. And one more peculiarity from reviews: the sleep timer is missing and is resolved by purchasing a paid app, which is disappointing for an otherwise well-equipped box.

What users say

On Alza, the box has a rating of 4.7 out of 5 from 233 reviews, 94% of customers recommend it, and the return rate is at a low level of 1.03%. People most appreciate the smooth streaming, responsive environment, and good price/performance ratio. It’s repeatedly mentioned as a successful way to revitalize an older TV, and the pleasant remote with a keypad is also praised.

However, there are also more serious criticisms that shouldn’t be concealed. The most common concerns terrestrial DVB-T2 broadcasting, where some users report image tearing even with a good signal — for sports and fast scenes, this bothers some enough to file a complaint. Several reviews mention that a forced firmware update changed the entire user interface and caused problems for individual units. Meanwhile, streaming apps, according to the same reviews, run smoothly, so images from Netflix or iVysílání are usually without issues; the main weakness is reception via antenna.

When it doesn’t make sense

If you’ll be using the box primarily for terrestrial DVB-T2 broadcasting, especially for sports or fast-motion programs, think twice — this is where complaints about smoothness arise, and a simpler classic set-top box might not disappoint you. Similarly, if you need gigabit LAN or Wi-Fi 6, this model won’t offer them. And for those who want maximum future performance, more expensive, better-equipped units can be found; the XT850 is an affordable entry-level class, not top-tier.

Verdict: who benefits from the sale

The TESLA MediaBox XT850 is a reasonable choice for revitalizing an older TV, especially if you want streaming apps and a built-in DVB-T2 tuner with one remote. At 1,724 CZK with code ALZADNY25, it’s one of the lowest prices it’s been available for on Alza, and it’s even below the previously recorded minimum. However, expect the limitations of an entry-level class — 100 Mb/s LAN, Wi-Fi 5, and especially the reported tearing with terrestrial broadcasting. Those aiming for streaming and considering DVB-T2 as a bonus will get a practical hybrid for 1,724 CZK. Those primarily seeking flawless terrestrial reception should choose carefully.

Would you primarily use the box for streaming, or for terrestrial DVB-T2 broadcasting?