Which Topping DAC is best?
Topping used a top-of-the-line ES9038 PRO 8-channel DAC chip of ESS Technologies. This is their best and most premium converter. Topping has already plenty of experience with this particular chipset, as they used it already in several devices as DX7 PRO and their flagship D90SE DAC is also powered by it.
Are topping DACS any good?
Absolutely clean and transparent sound quality with plenty of detail. Bluetooth 5.0 input accepts AAC, aptX HD, and LDAC codecs. Some of the best-measured performance of any DAC I have reviewed. DAC can decode almost any bitrate and format.
Is topping A90 fully balanced?
The A90 is a full-sized desktop headphone amplifier and preamplifier, with fully-balanced circuitry.