The Technics SU-GX70 is a versatile stereo amplifier that offers a plethora of features and connection options for audio enthusiasts. The app interface is relatively intuitive, allowing users to adjust settings, select inputs, and stream audio from popular music services such as Spotify, Tidal, Deezer, and more. Additionally, users can add their favorite radio stations for quick access or play music directly from Spotify Connect, AirPlay 2, Chromecast, or Bluetooth. The amplifier also supports streaming of hi-res audio files from a local server at high resolutions of up to 384 kHz/32-bit or DSD up to 11.2 MHz.
In terms of connections, the GX70 offers impressive options including three digital inputs (two optical and one Coax), USB-B and USB-A, as well as FM radio. It also features a front-facing headphone output, stereo speaker outs, and a preamp output for connecting a second amp or a powered sub. This variety of connectivity options ensures that users won’t run out of ways to play their music anytime soon.
For those who prefer physical controls, the GX70 comes with a long-wand remote that houses most significant functions, although it lacks backlighting. An advantage of the amplifier is its compatibility with TV remotes, allowing users to control power and volume when connected over HDMI ARC. However, users need to ensure that their TV’s audio output is set to PCM to avoid potential sound issues that could damage speakers.
When it comes to performance, the Technics SU-GX70 delivers clear and capable sound with an efficient power output of 40 watts per channel for an 8-Ohm load. The amplifier can power various speaker sets, from bookshelves to towers, making it a versatile audio solution. Testing the GX70 with different bookshelf speakers, it demonstrated crisp and clear audio with excellent definition, a well-defined stereo image, and a balanced frequency response.
Compared to higher-priced systems, the GX70 may not offer the same level of dynamic range and soundstage. However, its sound profile is distinctive, with a bright and clinical delivery that provides clarity and precision. It pairs well with speakers that have a smoother sound profile, such as those from brands like KEF or Focal. When used with turntables such as U-Turn’s Orbit Theory, the GX70 maintains its clear and detailed sound, although it may lack some warmth and dimensionality compared to more expensive systems.
In conclusion, the Technics SU-GX70 is a compelling stereo amplifier that combines clear and detailed sound with a wide range of features and connection options. Its versatility makes it an attractive choice for budding audiophiles who seek a balance between performance and functionality. With the ability to power various speaker setups and support high-resolution audio streaming, the GX70 is a capable stereo centerpiece that can cater to a variety of audio preferences.
