RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
PREOWNED – FULLY TESTED – SILVER – INCLUDES ORIGINAL REMOTE, POWER CABLE, SHORT UMBILLICAL CABLE FOR EXTENSION
The Topping Pre90 is a highly transparent, fully balanced preamplifier, while the Ext90 is its dedicated input extender. Together, they form an expanded audio setup that adds 6 extra inputs (4 XLR and 2 RCA) to the stack, making it easy to connect multiple audio sources.
Topping Pre90
The Pre90 utilizes Topping’s high-performance NFCA (Nested Feedback Composite Amplifier) modules to deliver ultra-low distortion and noise. It acts as an analog preamplifier and can also provide up to +16 dB of gain to boost weak input signals. It features one XLR and one RCA input out-of-the-box, alongside relay-controlled analog volume adjustment (in 0.5 dB steps) and a bright OLED screen.
Topping Ext90
The Ext90 is a matching expansion chassis that connects directly to the Pre90 via a proprietary umbilical cable. It adds zero noise to your signal chain while expanding your connectivity to include an additional 3 XLR pairs and 1 RCA pair. The extender is powered directly through the Pre90 and operates seamlessly via the main unit’s front panel or remote control.
Key Features & Capabilities
• Signal Conversion: The combination allows for flexible routing and signal conversion, easily turning unbalanced (RCA) signals into balanced (XLR) outputs, and vice-versa.
• Independent Output Modes: You can toggle the preamp outputs to run through XLR only, RCA only, or both simultaneously to drive multiple amplifiers.
• Volume Memory: The Pre90 can save specific volume levels and settings for each channel.
At US$500, this asking price sits right at the 75th percentile of recent used listings, where the median is US$410 and the 25th percentile is US$345, making it ambitious but not absurd for a used Topping PRE90 preamplifier. While new units retail around US$599, this listing is for a power cable, not the preamp itself, which makes the US$500 price tag a severe mismatch and likely a mislisted item.
Wait, the listing title says “Power Cable” for the PRE90, but no standalone Topping PRE90 power cable is known to retail near US$500; typical replacement cables for this unit cost far less, often under US$50. This price is almost certainly a listing error or confusion with the actual preamp unit. A buyer should verify immediately whether the seller meant to list the full PRE90 preamplifier—if so, US$500 would be a strong deal compared to the US$599 new price and the US$410 median used price. If it’s truly just a cable, this is not a worthwhile buy at any price near US$500.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Topping Audio, founded in 2008 in China, emerged from a team of dedicated audio engineers committed to democratizing high-fidelity sound. Without a single prominent founder in the spotlight, the brand quickly distinguished itself through rigorous innovation, amassing over 20 patents and pioneering technologies in digital audio processing. This heritage of independent R&D, backed by more than 30 experienced engineers, has positioned Topping as a global Hi-Fi contender focused on precision and accessibility.
The company specializes in desktop and portable audio gear, excelling in digital-to-analog converters (DACs), headphone amplifiers, and power amplifiers. Flagship models like the D90 DAC showcase cutting-edge components, such as the AKM AK4499EQ chip, delivering studio-grade performance. Topping also offers audio interfaces and, under its TOPPING Professional sub-brand, pro-level solutions for demanding studio environments, all emphasizing meticulous testing for reliability and sonic purity.
In the competitive hi-fi market, Topping occupies a mid-tier niche as an audiophile favorite, renowned for punching above its weight with exceptional value. Praised for build quality, intuitive design, and uncompromising transparency at affordable prices, it rivals pricier brands while earning loyal followings on forums and among desktop enthusiasts seeking high-end results without premium markups.
See all Topping Audio listings on RADAR.
