Uploaded May 2026 | Updated September 2026, 2 weeks ago

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Thanks to Apos Audio for sending the DX9 Discrete for review.

Buy from Apos Audio (affiliate link): https://apos.audio/products/topping-dx9-discrete-dac-amp?sca_ref=1448954.julYPU81dF

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My Other Topping Reviews...

Topping A30 Pro: youtu.be/tpfVxVkQU5I
Topping A50s: forum.hifiguides.com/t/topping-a50s-headphone-amp/19204/5
Topping A90: youtu.be/8Vz9VI-o9QE
Topping A90D: youtu.be/hxdD0eilgUA
Topping B200 Monoblock amps: youtu.be/Sp6GjnPfodg
Topping Centaurus: youtu.be/zWx-AI19hZw
Topping D30 Pro: youtu.be/Op22DP2_PBI
Topping D50s: forum.hifiguides.com/t/topping-d50s-dac/7153/70
Topping D70 Pro Octo: youtu.be/LBC6XWH34s8
Topping D90se: youtu.be/mavyGioiFhE
Topping DX7Pro+: youtu.be/cvoHW8MLrNI
Topping E30: forum.hifiguides.com/t/topping-e30/10184/215
Topping L30: forum.hifiguides.com/t/topping-l30/15085/89

Test Gear...

All music was lossless or hi-res FLAC or DSD files played through Roon. Some FLAC would be streamed from Qobuz, also through Roon.

Digital sources...

Optical output from Windows 11 PC motherboard
FiiO SR11 streamer connected via USB (youtu.be/YuagbK8p0FA)

Headphones...

Audio Technica ATH-ADX7000: youtu.be/pSXKdoYg0Tc
HiFiMan HE1000 Unveiled: youtu.be/d7yjTA584go

Timestamps...

00:00 Intro, Pricing, Disclaimer
01:00 Shameless Self Promotion
01:32 The Hard Conversation