TOPPING A90 4.4mm Balanced Headphone Amplifier Preamp

Up for sale is the Topping A90. This amplifier was previously featured by a certain YouTuber as the best value amplifier.
It can drive even demanding headphones and is a versatile device that excels as both a headphone amplifier and a preamplifier.
Its specifications are outstanding, delivering a clear and powerful sound that faithfully reproduces the source material with incredible transparency, capturing even the most delicate nuances.

I am selling it to upgrade to a high-end system.

✅ Key Features
• NFCA adopted for ultra-low distortion and high S/N design
• Solid output power, excellent for those who need driving power
• Clear and transparent sound (easy to perceive separation and imaging)

Terminals (※ The configuration shown in the photos is everything)
• 4-pin XLR balanced
• 6.35mm unbalanced
• 4.4mm balanced
• XLR, RCA input/output

Specifications (Reference)
• Ultra-low distortion: <0.00006%
• Dynamic range: 145dB
• Ultra-low noise: <0.2uVrms
• Ultra-low output impedance: <0.1Ω
• Maximum output: 7600mW × 2
• NFCA (Nested Feedback Conduction Amplifier)

Strengths of the Topping A90 based on specifications
• THD+N 0.00006%: Distortion suppressed to the extreme
• Dynamic range: 145dB for delicate yet powerful reproduction
• NFCA equipped for sound imaging that emerges from silence
• Maximum output: An astonishing 7600mW × 2 power

Accessories
• Main unit, cables, stereo conversion plug
No pets/non-smoking environment.
As this is a used item, please understand that there may be minor scuffs before purchasing.
Thank you for looking.