Topping A90 Discrete Headphone Amplifier
The A90 Goes High Performance
The Topping A90D is a discrete headphone amplifier that delivers a clean, high-headroom approach to desktop amplification. The original A90 already brought a host of high-end features to the table with impressive, low-noise performance—and now, the “D” version of this classic amp comes with Topping’s rock-solid Discrete Nested Feedback Composite technology. That amounts to an improvement in total harmonic distortion and an impressive increase in output power for a richer, less-distorted experience. Under the hood, you’ll find a new ground loop noise terminator, 12-volt trigger interface, a 145-decibel dynamic range, and a host of I/O capabilities including 4-pin XLR and 4.4-millimeter balanced outputs as well as commensurate inputs on the front end—offering the ultimate engine to drive even your most finicky pair of headphones or IEMs.

Color

Black
Silver
Specs
- Topping
- Discrete NFCA module architecture
- Gain settings: Low and high
- Output power: 9800 mW (x 2)
- Output voltage: 49 Vpp (balanced), 25 Vpp (SE)
- Output current: 5A (peak), 1.1A (continuous)
- Output impedance: <0.1 ohm
- THD+N: <0.000055%
- Dynamic range: 145 dB
- Outputs (front): 4-pin XL, 4.4 mm balanced, 6.35 mm SE
- Outputs (back): Single-ended RCA, balanced XLR
- Inputs: Balance XLR, single-ended RCA
- Dimensions: 6.3 x 8.7 x 1.7 in (16 x 22.2 x 4.5 cm)
Included
- Remote control
- AC cable
- 6.35 mm to 3.5 mm adaptor
- Owner’s manual

Shipping
Estimated ship date is Feb 11, 2025 PT.
Payment will be collected at checkout. Cancellations are accepted up to 2 hours after checkout, after which all sales final.




































