A90 vs SMSL HO200
The HO200's signal-to-noise is 140 dB against the A90's 145 dB and its output impedance 0Ω against 20Ω. Both share thd (0.000%) and class (Solid_state).
AI-generated product photo — not official manufacturer imagery.
AmplifiersHeadphone Amplifiers
Estimated price (community-sourced)
$400 - $599
Around — community and catalog average, updates slowly
About the A90
The Topping A90 is a flagship desktop balanced headphone amplifier and preamplifier using Topping's NFCA (Nested Feedback Composite Amplifier) topology with ultra-high-gain feedback for extremely low noise and distortion. It offers three gain settings (low/medium/high) and is designed to drive everything from sensitive IEMs to high-impedance, power-hungry full-size headphones, thanks to its very high output power (up to around 7.6 W per channel balanced at low impedances) and output impedance below 0.1 Ω. As a preamplifier it provides a low-noise, fully balanced signal path with switchable preamp/headphone-amp mode on the front panel, making it suitable as a transparent control hub in desktop audio systems. It is widely regarded by reviewers as an ultra-clean, highly transparent solid-state reference amplifier, noted for THD+N below 0.00006%, dynamic range around 145 dB, and an inaudible noise floor that makes it particularly well-suited for critical listening.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.000%
- SNR
- 145 dB
- Output Impedance
- 20Ω
Connectivity
Input and output connections
- Digital Inputs
- RCA, XLR, 4-pin XLR, 4.4mm balanced, 6.35mm SE
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions