Apos TOPPING-90 Ensemble

Due to the AKM factory fire, this ensemble has been replaced by the TOPPING-90SE Ensemble.

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Note: Looking to pair a set of headphones, IEMs, or another piece of gear? Click the “Request a Headphone Pairing” button to chat with our Support Team, get suggestions, and save even more. 

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 D90 DAC and the Topping A90 work in perfect harmony, decoding and driving music above a pitch-black backdrop. A Fanmusic C006 XLR cable connects the two with pure-copper clarity. 

Accompanying them is one of eight pairs of headphones. Although any of these headphones will prove an excellent complement to the ensemble, they represent different price points and sound signatures, so we invite you to explore their product pages for more information.  

The TOPPING-90 Series Ensemble Includes

• DAC: Topping D90 DAC (Standard or MQA) 

• Amp: Topping A90 Headphone Amp

• Interconnection: Fanmusic C006

Pair a Headphone For More Savings

Below, you’ll find a list of headphones we recommend for the SMSL SU-9 Ensemble. Although any of these headphones will prove an excellent complement to the ensemble, they represent different price points and sound signatures, so we invite you to explore their product pages for more information. 

We will of course pair any headphone, IEM, or piece of equipment in our store with the Ensemble. All you have to do is click the “Request a Headphone Pairing” button above to speak to our Support Team and see how much you’ll save. 

Our headphone recommendations

• Dan Clark Audio Æon 2 Headphone (Closed or Open Back)

• QUAD ERA-1 Planar Magnetic Headphone

• HIFIMAN Arya

• HIFIMAN HE1000v2

• HIFIMAN Ananda



• HIFIMAN Sundara

• Audeze LCD-2 Open Back

• Audeze LCD-X

Spec Summary

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

Topping D90 MQA DAC

• D/A Chip: AKM AK4499

• USB Interface: XMOS XU208

• SPDIF Interface: AK4118

• Sampling Rates

• USB: PCM up to 32bit 768kHz / Native DSD up to DSD512 / DSD DoP up to DSD256

• IIS : PCM up to 32bit 768kHz / DSD up to DSD512
  Coaxial, Optical, AES : PCM up to 24bit 192kHz

• Output Voltage

• RCA : 2Vrms @ 0dBFS

• XLR : 4Vrms @ 0dBFS

• Dynamic Range (A-weighting): 128 dB

Topping A90 Headphone Amp

• Outputs: 4pin XLR, 4.4mm Balanced, 6.35mm Single Ended ports

• Dynamic Range: 145dB

• Ultra-Low Noise of 0.2uV

Fanmusic C006

• Material: Two-core braided HiFi line L-2T2S of CANARE

• Jack: Black Gold-Plated NC3MXX-B and NC3FXX-B of NEUTRIK

• Wire Length: 20cm (excluding plug)

• Conductor Insulation Layer: XLPE polyethylene

• Shielding Material: 80 x 0.1mm braided copper wire

• Shell Material: Soft PVC/neoprene

Dan Clark Audio Æon 2

• Efficiency: 92dB

• Impedance: 13ohms

• Cable: Detachable 2m premium dual-entry cable with 1/4" termination

• Weight: 340g

QUAD ERA-1 Planar Magnetic Headphone

• Impedance: 20 ohms

• Sensitivity: 94db/mW

• Frequency Response Range: 10 Hz - 40 kHz

• Total Harmonic Distortion: ≤0.2% (1kHz,100dB)

• Related Input Power: 100mW

• Weight: 420g (without cable)
  
  

HIFIMAN Arya

• Type: Open Back

• Driver: Planar Magnetic

• Frequency Response: 8Hz-65kHz          

• Impedance: 35Ω

• Sensitivity: 90dB  

• Cable: 1.5m Crystalline Copper Cable

• Weight: 14.3oz (404g)

HIFIMAN HE1000v2

• Type: Open Back

• Driver: Planar Magnetic

• Frequency Response: 8Hz-65kHz           

• Impedance: 35W

• Sensitivity: 90 dB               

• Weight: 14.8 oz (420g)

HIFIMAN Ananda

• Type: Open-back

• Driver: Planar Magnetic

• Frequency Response: 8Hz-55KHz           

• Impedance: 25Ω

• Sensitivity: 103dB               

• Weight: 14.7oz (399g)

• Includes: 1.5m cable (3.5mm), 3m cable (6.35mm)
  
  

HIFIMAN Sundara

• Frequency Response: 6Hz - 75kHz 

• Impedance: 37 ohms 

• Sensitivity: 94db 

• Weight: 13.1oz (372g)

• Cable Length: 1.5m

• Headphone Connectors: 3.5mm 

Audeze LCD-2 Open Back

• Type: Over-ear, open-back

• Driver: Planar Magnetic

• Frequency response: 10 - 50,000Hz

• Impedance: 70Ω

• Sensitivity: 101 dB/1mW (at Drum Reference Point)

• Weight: 1.31lbs (595g) (Rosewood), 1.27lbs (580g) (Shedua/Bamboo)

Audeze LCD-X

• Type: Over-ear, open-back

• Driver: Planar Magnetic

• Frequency response: 10 - 50,000Hz

• Impedance: 20Ω

• Sensitivity: 103 dB/1mW (at Drum Reference Point)

Weight: 1.39lbs (635g)

Got a question about Apos Ensembles? Check out the help center.