---
title: "TOPPING A90 Discrete HiFi Headphone Amp"
url: "https://omorp.com/product/topping-a90-discrete-hifi-headphone-amp-nfca-4-pin-xlr-4-4-balanced-6-35mm-se-output-pre-amplifier-with-blutooth-remote-control-a90-discrete-black-b0ddbhrzy4"
asin: "B0DDBHRZY4"
brand: "TOPPING"
category: "audio"
price: "$599"
price_checked: "2026-08-12"
site: "Elan's Best (omorp.com)"
---

# TOPPING A90 Discrete HiFi Headphone Amp

TOPPING A90 Discrete HiFi Headphone Amp, NFCA 4-Pin XLR/4.4 Balanced/6.35mm SE Output Pre-Amplifier with Blutooth Remote Control (A90 Discrete-Black)

The TOPPING A90 Discrete HiFi Headphone Amp was $599 when we checked it on 2026-08-12.

## Overview

【Fully Discrete NFCA for Superior Sound】, The TOPPING A90 Discrete features 4 NFCA-Discrete modules with 39 transistors each, ensuring high output, strong current, and low impedance for effortless headphone driving. 【Re-Optimized Circuit for Ultra-Low Noise】The TOPPING A70 Pro’s newly developed input stage boosts noise performance and input impedance (20kΩ) for better device compatibility, while the gain architecture minimizes noise at high gain settings. 【Ground Loop Noise Terminator】, Use the GND/LIFT switch to eliminate ground loop noise. Set to GND by default, switch to LIFT if noise occurs for uninterrupted audio. 【Headphone Amp & Preamp in One】, Functions as both, with 20Ω SE and 40Ω balanced output impedance, ensuring compatibility with various power amps. 【Expanded Inputs with E

## Specifications

- Brand: TOPPING
- Model Number: TPA90D

## Price history (tracked by Elan's Best)

- Current: $599 (checked 2026-08-12)
- Lowest we have recorded: $599 on 2026-08-12
- Highest we have recorded: $599 on 2026-08-12
- Our own weekly checks: 1 over 0 days, from 2026-08-12 to 2026-08-12

## Common questions

### Is the TOPPING A90 Discrete HiFi Headphone Amp worth it?

【Fully Discrete NFCA for Superior Sound】, The TOPPING A90 Discrete features 4 NFCA-Discrete modules with 39 transistors each, ensuring high output, strong current, and low impedance for effortless headphone driving. 【Re-Optimized Circuit for Ultra-Low Noise】The TOPPING A70 Pro’s newly developed input stage boosts noise performance and input impedance (20kΩ) for better device compatibility, while the gain architecture minimizes noise at high gain settings. 【Ground Loop Noise Terminator】, Use the GND/LIFT switch to eliminate ground loop noise. Set to GND by default, switch to LIFT if noise occurs for uninterrupted audio. 【Headphone Amp & Preamp in One】, Functions as both, with 20Ω SE and 40Ω balanced output impedance, ensuring compatibility with various power amps. 【Expanded Inputs with E Its Amazon listing shows 3.3 out of 5 stars across 5 ratings, which is the retailer's figure and not our verdict.

### How much does the TOPPING A90 Discrete HiFi Headphone Amp cost?

The TOPPING A90 Discrete HiFi Headphone Amp was $599 when we checked it on 2026-08-12. Prices change often, so the live retailer link carries the current number.

Retailer rating (from the Amazon listing, not our score): 3.3 out of 5 across 5 reviews.

---

Disclosure: Elan's Best may earn an affiliate commission on purchases made through our links, at no extra cost to the buyer. Commissions never change our picks.

Source: https://omorp.com/product/topping-a90-discrete-hifi-headphone-amp-nfca-4-pin-xlr-4-4-balanced-6-35mm-se-output-pre-amplifier-with-blutooth-remote-control-a90-discrete-black-b0ddbhrzy4