Ensemble, assemble!

Apos Ensembles are like the Avengers of audio gear: bundles assembled by our team to save your ears from the forces of mediocre sound. Every piece of equipment plays its part to deliver an unbeatable listening experience: a DAC to decode the 1s and 0s, an amp to power up the audio, and all the interconnections necessary to bring the team together.

Meet the TOPPING-900 Series Ensemble

The Apos TOPPING-900 Ensemble is a bundle designed to provide you with a premium audio setup straight out of the box. 

For the DAC, you'll get the TOPPING D900 a 1-bit PSRM architecture decoder, featuring proprietary I/V conversion and wireless support with LDAC. It includes a 10-band parametric EQ, an independent pre-amp mode, and a machined aluminum remote control. 

For the amp, you'll get the TOPPING A900 Ultra-Flagship Headphone Amp, featuring the fully-balanced T'ang-ku-la amplifier circuit with 22,000mW per channel of output power. It supports both balanced and single-ended headphones with outputs including 4-pin XLR, 4.4 balanced, and 6.35mm SE. The amp also includes features like relay volume control, a preamp mode, and full-color display. 

Optionally, add the TOPPING Pre900 fully-balanced desktop preamplifier. It combines a four-channel balanced architecture, 0.1 dB relay volume control, three balanced combo inputs, one pair of XLR balanced outputs, independent power supplies, a color display, and a remote control. 

Products in this bundle

TOPPING D900 DAC (DIGITAL-TO-ANALOG CONVERTER)

• Fully discrete 1-bit PSRM DAC architecture

• Self-developed I/V circuitry

• SNR: 131dB; DNR: 131dB

• Ultra-low jitter (-157dB)

• THD+N: <0.000055%

• 10-band PEQ with desktop software

• Aurora UI with full-color screen

• Bluetooth 5.1 with LDAC and aptX HD

• Preamp mode with volume memory

• 12V trigger in/out

• Inputs:  USB-C, USB-B, optical, coaxial, Bluetooth, AES, or IIS-LVDS

• Outputs: XLR balanced preamp, XLR balanced line out

TOPPING A900 Ultra-Flagship Headphone Amplifier

• Six-channel T’ang-ku-la circuit with patented three-stage feedback

• Fully balanced differential architecture

• 22,000mW x2 @16Ω output power

• THD+N <0.00003% across the band (90kBW)

• SNR/DNR up to 151dB

• Balanced relay-based volume control with 0.5dB steps

• Six headphone outputs: 6.35mm, 4.4mm, 4-pin XLR, dual 3-pin XLR

• Supports independent or simultaneous output configurations

• Preamp mode with balanced XLR outputs

• Full-color display with customizable modes and colors

• Premium Neutrik and Pentaconn connectors

• Isolated power supply for analog/digital circuits

• Precision-machined aluminum remote control

TOPPING Pre900 Fully-Balanced Desktop Pre-Amplifier

• Four-channel fully-balanced preamplifier
  
• True end-to-end differential design
  
• 0.1 dB precision relay volume control
  
• 1,000-step volume adjustment
  
• THD+N rated at 0.00005% at 1kHz A-weighted
  
• THD rated below 0.00003% from 20Hz to 20kHz
  
• 151dB SNR and 151dB dynamic range
  
• Three stereo balanced combo inputs with XLR and 6.35mm TRS support
  
• One pair of XLR balanced outputs

Apos Flow XLR Cable

• Imported Japanese copper conductor
• 4-core audio wire
• A copper lattice braid with 94% density effectively shields the conductor from electromagnetic interference
• Each core made of 60pcs of 0.08mm copper wire
• Neutrik terminations