Topping D900 Ultra Flagship PSRM 1-Bit Hi-Res Bluetooth DAC

Proprietary Discrete I/V Conversion

To complement the PSRM decoding, the D900 features a newly designed discrete I/V conversion circuit. This stage uses carefully selected low-distortion operational amplifiers and ultra-low noise discrete components to maintain signal fidelity from digital to analog.

Crafted for Listening

Beyond its internal architecture, the D900 reflects TOPPING’s deep-rooted philosophy in music-first design. Its clean, precise industrial aesthetic echoes the clarity and structure of the audio it reproduces. 

Wide-Ranging Digital Compatibility

The D900 is engineered to serve as the centerpiece of any high-end digital audio chain. It accepts a wide range of inputs, including USB-C, USB-B, coaxial, optical, AES/EBU, and I²S via HDMI, ensuring seamless integration with computers, streamers, CD players, and more. 

It also supports Bluetooth 5.1 with advanced codecs such as LDAC, aptX-HD, and AAC, delivering wireless performance that exceeds traditional CD quality.

Fully Customizable PEQ Tuning

For users who want precise tonal shaping, the D900 introduces a new ten-band parametric EQ system. Through desktop software, users can adjust the frequency, gain, and bandwidth of each band, import target curves, and store multiple user profiles.

Specification:

Product Type: DAC

DAC Architecture: Discrete 1-bit PSRM Circuit

Bluetooth Chip: QCC5125

CPLD Processor: Altera Max II

Inputs: USB-C, USB-B, 2x Coaxial, 2x Optical Toslink, AES/EBU, I²S (via HDMI)

Outputs: 1x XLR Line Out, 1x XLR Preamp Out

Supported Sampling Rates: PCM up to 32-bit / 768kHz, DSD up to DSD512

Bluetooth Version: 5.1

Supported Bluetooth Codecs: SBC, AAC, aptX, aptX-HD, aptX Adaptive, LDAC

UI System: Aurora UI with full-color display

Functionality: DAC + Preamplifier, 10-Band PEQ, Trigger In/Out

Inside the Box

1x Topping D900 Main Unit

1x CNC Aluminum Bluetooth Remote Control

1x Bluetooth Antenna

1x Power Cable