Cayin RU9 review: How good does a tube dongle really sound?
High-end audio has rarely been so mobile and affordable
The Cayin RU9 brings tube sound to your pocket: USB DAC, headphone amplifier and Nutube vacuum tube for high-end sound on the go.
Author: Stereo Guide
Stereo Guide
On Stereo Guide you will find competent and objective tests for Bluetooth speakers, headphones and car HiFi by experienced journalists.
OneOdio Studio Max 1 review: DJ headphones with LDAC & 120 h battery life
What can the endurance runner do for disc jockeys?
The OneOdio Studio Max 1 combines LDAC streaming, 120 h battery and DJ functions. In the test, it shows strengths in terms of features – and weaknesses in terms of sound.
Tronsmart Bang 2 review: 90 W Bluetooth speaker with power
More power, more endurance - and what else?
The Tronsmart Bang 2 delivers 90 W of power, stronger bass and a longer runtime. In the review, the party speaker shows clear progress compared to its predecessor.
Spotify brings Lossless Connect and 24-bit quality at no extra charge
Spotify lossless streaming for Sony, Bose and Cambridge
Spotify is the most popular streaming service, also thanks to its sophisticated app and the stable Spotify Connect function. This is now being expanded to…
HIGH END 2025 in Munich for the last time – trade fair report
Vienna calling!
The HIGH END trade fair took place for the last time in Munich in 2025. As well as a great atmosphere, there was also a sense of melancholy.
STEREO GUIDE HIGH END 2025 Reference Playlist
Listening comparisons with our selected test tracks
STEREO GUIDE has created a public playlist with Qobuz for the HIGH END 2025 in Munich. You can use it to make your own listening comparisons.
The best Bluetooth speakers for outdoors
Outdoor sound for camping, hiking, beach or party
Waterproof, shockproof, loud: What makes outdoor boxes stand out? In the test, we found the best outdoor Bluetooth speakers from 35 to 450 euros.
Sony WF-C710N with ANC review
Pink different: Better than the last generation?
The Sony WF-C710N Bluetooth earbuds offer good ANC and many functions. Real all-rounders in terms of sound, neither audiophile nor level miracle.
Tribit StormBox Lava review
How good is the bass volcano with 80 watts?
The Tribit Stormbox Lava leaves an ambivalent impression. It offers a lot of bass for the money, but often starts to boom at medium levels.
Klipsch Detroit mobile Bluetooth speaker review
The compact party speaker with hi-fi ambitions
Review: The Klipsch Detroit is the counterpart to the Marshall Middleton. What can the mobile Bluetooth speaker do for outdoor activities?