Ex-Demo Topping Velvet E70 DAC

I'm selling a high-quality, practically new digital-to-analog converter. Tested in a business setting, in its original box, complete with all accessories, including the remote control. 

Je mets en vente un convertisseur numérique-analogique de qualité, pratiquement neuf. Testé en milieu professionnel, dans son emballage d'origine, avec tous ses accessoires, télécommande comprise. 

The Topping E70 Velvet is a surprisingly good DAC that feels right at home in a desktop scenario or injected into a home theatre hub. The E70 sound quality is on par with more expensive DAC sections, particularly in staging and 3D presentation plus it also excels with a very low noise floor.

The E70 V's back panel is very well laid-out, and features the main power switch, a standard IEC power input, inputs for a 12V trigger and pass-through, and the connection socket for the Bluetooth antenna. Digital inputs included USB, coaxial, and optical; I only evaluated the unit using the USB input, which featured the highest level of file and bit-rate compatibility of the three available choices. Analog outputs included a pair of single-ended coaxial jacks and a pair of balanced XLR jacks. The outer case was substantial, and the unit had sufficient heft that prevented it from moving about or tilting backwards when the heavier aftermarket cables were inserted—that's always a nice feature in a smaller form-factor product. Fit and finish and construction detail were superb.

The E70 Velvet actually uses a dual-AKM chip configuration that accomplishes digital filtering, delta-sigma modulation, and the digital-to-analog conversion functions. That configuration is responsible for the magic that gives the E70 V its sterling sound quality with native DSD files. The "Velvet" part of the E70 Velvet's name comes from the use of a single AKM AK4191EQ chip, which is a digital data converter chip that separates the digital filtering and delta-sigma modulation processes prior to sending the music signal to the flagship AK4499EXEQ chip for digital to analog conversion. AKM calls this trademarked configuration and signal flow "VELVETSOUND™"; the process minimizes the effects of digital noise in the analog output, and results in a significant improvement in the E70 Velvet's signal-to-noise ratio. Yielding a dramatic improvement in sound quality, especially that of native DSD files. This dual-chipset configuration has the potential to establish a new benchmark of precision, performance, and musicality.

Product Strengths

• Good build quality, with an aluminum casing and scratch-resistant glass front panel
• USB input of E70 VELVET has a wide range of compatibility,Windows 10, Windows 11, MAC, Linux, IOS, Android can be plug and play. Only for Windows ASIO applications, you need to install the driver and set it up. The USB hardwareis based on XMOS XU316 and Thesycon custom driver (applicable to Windows, other systems are free of driver),which is stable and reliable.
• The TOPPING E70 VELVET has the certification of Hi-Res Audio Wireless and LDAC. It uses newest QCC5125 chipset to support LDAC/AAC/SBC/aptX/aptX LL/aptX HD/aptX Adaptive protocol by Bluetooth 5.1.To get even better sound quality from Bluetooth, we abandon the built-in DAC of QCC5125 and connect it's digital signal to AK4499EX to decode.
• The brand new Low-noise voltage reference power supply effectively reduces the output noises and distortions to excellent level. Basing on this design, the distortion of E70 VELVET is as low as -125db and the noise is no higher than 1.3uVrms.
• E70 VELVET has the certification of Hi-Res Audio Wireless and LDAC. It uses newest QCC5125 chipset to support LDAC/AAC/SBC/aptX/aptX LL/aptX HD/aptX Adaptive protocol by Bluetooth 5.1.To get even better sound quality from Bluetooth, we abandon the built-in DAC of QCC5125 and connect it's digital signal to AK4499EX to decode.
• The optical and coaxial input of E70 VELVET supports up to 24bit/192kHz audio, which is suitable for digital turntables, disk players, set-top boxes,so that traditional equipment can also give a new sound.
• TOPPING E70 VELVET has balanced XLR output and single ended RCA output.You can choose “XLR only”, “RCA only” or “XLR+RCA" output for different applications.