Apos

Apos TOPPING 50s Ensemble

$549.99 $605.96

Request A Headphone Pairing


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-50s Series Ensemble

The TOPPING-50s Series Ensemble is a supergroup of performers. The Topping D50s DAC and the Topping A50s amp work in perfect harmony, decoding and driving music above a dizzyingly low noise floor. A TOPPING P50 power supply supplies ultra-quiet energy in a stackable aluminum chassis, while a Fanmusic C003 connects the DAC and Amp. 


Accompanying them is one of seven 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-50s Series Ensemble Includes


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


Spec Summary

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


Topping D50s DAC

  • Input: USB/OPT/COAX/BT

  • Line Out: RCA

  • USB In:

    • 44.1kHz-768kHz/16bit-32bit

    • DSD64-DSD512(Native)

    • DSD64-DSD256(Dop)

  • OPT/ COAX In: 44.1kHz-192kHz/16bit-24bit, DSD64(Dop)

  • Bluetooth In: AAC/SBC/APTX/APTX LL/APTX HD/LDAC


Topping A50s Headphone Amp

  • THD+N @1 kHz A-wt: <0.00007%

  • SNR @MAX OUT 1 kHz A-wt: 144dB

  • Frequency Response: 20Hz-200kHz(±0.05dB)

  • Output Level: 42Vpp

  • Channel Crosstalk @ 1kHz: -128dB

  • Output Impedance: <0.1Ω

  • Output Power THD+N<1%: 3.5Wx2@32Ω


Topping P50 Linear Power Supply

  • Power Input: AC110V/AC220V 50Hz/60Hz

  • Power Output: USB-A*2,DC(5.5/2.1)*1

  • Power Supply Noise:<1mVrms

  • Output Power:

    • DC5V 1A*2

    • DC15V 1A

    • DC5V 1A*1+DC15V 0.9A

    • DC5V 0.8A*2+DC15V 0.8A


Fanmusic C003 Cable

  • Material: Black gold-plated ROTONE RF2C-BG male plug, two-core braided audio cable L-2E5AT of CANARE

  • Core DC resistance: 6.2Ω/100m

  • Insulation voltage: 500V AC * 1 minute

  • Conductor insulation layer: XLPE polyethylene

  • Shielding: Tinned copper twisted and high-density aluminum foil

  • Shell material: Soft PVC/Neoprene composite

  • Wire length: 25cm (excluding plug)

  • Contact: Brass

  • Contact plating: Gold


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 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)




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