Apos Ensembles are equipment bundles that have been specially curated by our team of audio professionals. Just as an ensemble refers to a group of musicians playing together, each of our ensembles is a coordinated group of equipment that we’ve brought together to form a superior listening experience. 

Meet the TOPPING-90 Series Ensemble

The TOPPING-90 Series Ensemble is a supergroup of performers. The Topping D90SE/D90LE DAC and the Topping A90 Discrete work in perfect harmony, decoding and driving music above a pitch-black backdrop. An Apos Flow XLR cable connects the two with pure-copper clarity. 

The TOPPING-90 Series Ensemble includes:

• DAC: TOPPING D90SE/D90LE DAC
• Amp: Topping A90 Discrete Headphone Amp
• Interconnection: Apos Flow XLR Cable

Spec Summary

Note: For full specs, please visit the individual product pages.

• ESS SABRE ES9038 PRO DAC chip
• 2nd generation 16-core XMOS XU216 processor
• Max sampling rates: DSD1024 and PCM 32-bit/768kHz
• Bluetooth 5.0 support with LDAC transmission
• 0.00005% THD+N
• MQA decoding with USB, coaxial, optical, and AES inputs
• Selectable RCA & XLR outputs
• Inputs: AES, Bluetooth, USB, Optical, Coaxial, IIS
• Outputs: XLR, RCA
• Customized Thesycon driver
• Ultra low noise preamp
• Remote control
• 7 digital filters

• Headamp/pre-amp
• NFCA discrete modules
• 9800mW x2 output power
• Outputs: 4-pin XLR, 4.4 balanced, 6.35mm SE
• R2R relay volume control
• Ground loop noise terminator
• 12V trigger interface
• 2 gain settings
• <0.000055% THD+N
• 145dB DNR

• 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

TOPPING SR2 Aluminum Rack (Add on)

• All-aluminum design
• Shock-absorbing, non-slip foot pads
• Excellent load-bearing capacity
• Modular (stack multiple SR2 units)